Generating or transmitting mechanical vibrations in general (B06)

B06            Generating or transmitting mechanical vibrations in general(3400)
Bench for models of vibration systems of ship engine room power plants vibro-acoustic tests // 2642155
FIELD: test equipment.SUBSTANCE: invention relates to testing equipment and can be used for testing of vibration isolation systems. Stand contains a base on which, through at least three vibration isolators, a bulkhead is fixed, which is a single-mass oscillatory system of mass and rigidity of m2 and c2, respectively, and arranged on the bulkhead an eccentric vibrator is used as a generator of harmonic oscillations. On bulkhead a post is installed for testing of natural frequencies of resilient elements of spring and disc vibration isolators with different lengths, geometrical parameters, as well as different weights value, fixed at the ends of those tested elements. At that, oscillations of the mass fixed on each resilient element is fixed by displacements indicator, according to readings of which resonant frequency is determined, corresponding to each resilient element parameters. On the base and the bulkhead vibration acceleration sensors are fixed, signals from which are transmitted to an amplifier, then the oscilloscope, a magnetograph and a computer to process the received information, wherein to adjust the bench operation a frequency meter and a phase meter are used.EFFECT: technical result is expansion of technological capabilities of testing objects.3 cl, 7 dwg
ethod for ultrasonic grinding of diamond films having outer layer of polycrystalline diamonds on surface of base // 2640370
FIELD: technological processes.SUBSTANCE: removing crystallites of said outer layer by exposing them to ultrasonic radiator to form a recorded roughness of the outer layer. The ultrasonic radiator has a planar radiating end surface of Ti3Al intermetallide. The action of ultrasonic radiator on the crystallites is carried out in a bath through the flow of suspension supplied between said radiating surface and the surface of the base of the suspension, in the cavitation mode with provision of microchipping of crystallites of the base outer layer. The oscillation amplitude A of the ultrasonic radiator is chosen A=(2-8) Ra, and the size in diamond grain in suspension is equal to B=3A, where Ra is initial roughness of the base outer layer.EFFECT: increased productivity and quality of diamond surface grinding.6 cl, 8 dwg, 1 tbl
Acoustic testing bench for sound absorbers // 2639052
FIELD: testing equipment.SUBSTANCE: acoustic testing bench for sound absorbers contains the metal case with the removable front lid, the walls of which are lined with the tested sound absorber, differs in that the adjustable noise source is set on the body bottom through the elastic damping gasket, besides, the adjustment is carried out according the sound volume and signal frequency, using the signal power amplifier and oscillograph, and at the distance of 1 m from the housing cover the microphone is fixed, the sound pressure levels signals from which go to the frequency spectrum analyzer, and then to the computer to process the information received, at that the sound power level Lp is determined by the measurements results of the average sound pressure level Lcp at the measuring surface S, m2, which is taken as the hemisphere area: , where S=2πr2; r - the distance from the source center to the measurement points; S0=1 m2 and the corrected sound power level LpA: , where LAav -average sound level at the measuring surface and value of the sound pressure level ΔL reduction in the sample reflected sound field the is calculated by the formula where L-sound pressure level at the calculating point up to acoustic treatment of the room, dB; Lobl -sound pressure level at the calculating point after the acoustic treatment of the room, dB, B- constant of the vessel cabin before its acoustic treatment, m2; B1- constant of the room after its acoustic treatment, m2, which is determined by the formula where where A1=α(Stotal-Sobl) - the equivalent area of sound absorption by surfaces, not occupied by the sound-absorbing lining;α= (B)/(B+Stotal) - average sound absorption coefficient in the room before it is acoustical treatment; α1-average sound absorption coefficient of acoustic treated room, defined by the ratio , where ΔA - the value of total optional absorption, made by the design of the sound absorbing lining or single piece sound absorbers, determined by the formula ΔA=αoblSobr+Apsn, where αobl - reverberation sound absorption coefficient of lining design; Sobl - area of this design, m2; Aps - the equivalent sound absorption area of single piece absorber, m2; n is the number of single piece absorbers in the room, differs in, that for testing the effectiveness of acoustic ceiling coated with sound absorber, remove the absorber from the metal body walls and the effective part of adjustable noise source direct to the ceiling part of the body and turn it on by subsequently changing the sound volume and the signal frequency, then send the signals from the microphone to the power amplifier, such as strain gauge, and send the signals from it to the oscillograph and record the oscillograms of the sound pressure levels, according to which determine the efficiency of acoustic ceiling.EFFECT: expanded technological capabilities of objects testing, having several elastic couplings with the body parts.3 dwg
Vibroacoustic tests bench of samples and models // 2639044
FIELD: testing equipment.SUBSTANCE: bench for vibroacoustic tests of samples and models contains the basis on which through at least three vibration-isolators the bulkhead is fixed, representing the single mass oscillating system with mass and stiffness accordingly,m2 and c2, and the eccentric mass vibrator is used as the harmonic oscillations generator, located on the bulkhead, differs in that the rack installed on the bulkhead for testing the natural frequencies of elastic spring elements and disc vibration isolators of different length, geometrical parameters, as well as different masses size, fixed at the ends of these tested elements. The oscillations of the mass, fixed on each elastic element, are fixed by the displacement indicator, according to the indications of which the resonance frequency corresponding to the parameters of each elastic element is determined. The vibration acceleration sensors are fixed on the base and bulkhead, the signals from which send to the amplifier, then to the oscillograph, the magnetograph and computer for processing of the received information. The frequency meter and phase meter are used to adjust the bench's performance, and to determine the natural frequencies of each of the vibration isolation systems being tested, the simulations of shock impulse loads are performed for each of the systems and oscillograms of free oscillations are recorded. When decoding this, the natural frequencies of the vibration isolation systems and the logarithmic decrement of oscillations damping are determined by the formula , where c1 and m1 - respectively, the rigidity of the vibration isolators elastic elements and the base mass, c2 and m2 - respectively, the rigidity and mass of the bulkhead, h1 - the absolute value of viscous damping in the system, which is related to the logarithmic damping coefficient δ1 of oscillatory system. The sound power level Lp is determined from the measurements results of the average sound pressure level Lav at the measuring surface S, m2, for which the area of the hemisphere is taken, where S=2πr2; r is the distance from the source center upto the measurement points; S0=1 m2, and the corrected sound power level LpA , where LAav - the average sound level at the measuring surface. The sound pressure level ΔL reduction value in the reflected sound field of the sample is calculated by the formula , where L - the sound pressure level at the calculated point before the acoustic treatment of the room, dB; Lobl - the sound pressure level at the calculated point after acoustic treatment of the room, dB; B - vessel's cabin constant before its acoustic treatment, m2; B1 - room constant after its acoustic treatment, m2, which is defined by the formula where A1=α(Stotal-Sobl) - the equivalent area of sound absorption by surfaces not occupied by sound-absorbing lining; α=B/(B+Stotal) - the average coefficient of the sound absorption in the room before its acoustic treatment; α1 - the average sound absorption coefficient of acoustically treated room, defined by the ratio where ΔA - the value of the total additional absorption, introduced by the design of sound-absorbing lining or single-piece sound absorbers, determined by formula ΔA =αoblSobl+ Apsn, where αobl - the reverberation coefficient of sound absorption of the lining design; Sobl - area of this design, m2; Aps - equivalent sound absorption area of one single-piece absorber, m2; n - the number of single-piece sound absorbers in the room. At each of the tested elastic elements of different lengths, the geometric parameters, and also the different masses, the strain gauges are attached to the ends of these tested elements. The mass oscillations, fixed at each elastic element, are registered both by the displacement indicator and by the strain gauges. The rapid assessment of the characteristics is carried out according to the indicator records, while processing the signals from the strain gauges coming to the amplifier, then to the oscillograph and magnetograph and computer for processing the received information, the amplitude-frequency characteristics are determined and the optimal characteristics are identified: stiffness and damping coefficient of each of the elastic elements.EFFECT: expanded technological capabilities of objects testing, having several elastic couplings with the body parts.2 cl, 7 dwg

Ultrasonic device with the built-in gas supply system // 2638909
FIELD: metallurgical engineering.SUBSTANCE: group of inventions includes ultrasonic devices and a method for reducing the amount of dissolved gas and/or impurities in a molten metal bath. The ultrasonic unit comprises an ultrasonic transducer, a probe attached to an ultrasonic transducer, the probe comprising a tip, a gas supply system, the gas supply system comprising: gas inlet, gas passage through the probe and gas outlet at the probe tip, the probe being a single a component containing sialon, silicon carbide, boron carbide, boron nitride, silicon nitride, aluminium nitride, aluminium oxide, zirconia, or combinations thereof.EFFECT: stability at elevated temperatures of the molten metal bath, providing a longer service life and limited chemical activity or lack thereof when interacting with a specific molten metal.27 cl, 7 dwg, 11 ex

ethod for nonchemical cleaning of saponite-containing water and compaction of saponite-containing sediment // 2638370
FIELD: chemistry.SUBSTANCE: to implement the method, radiation of the running hydro-acoustic waves of audible and ultrasonic frequency ranges is formed, contaminated saponite-containing water is effected by radiation, hydro-acoustic coagulation and precipitation of saponite-containing particles, compaction of the water dam bodies and acoustic drying of the sediment are carried out. While the hydroacoustic radiators are placed on the floating sonar module (13) installed within the area of discharge of polluted saponite-containing water (5), in the central part of the sump and near the intake of clear water (7) optionally at least two mobile booms (11), forming transverse, overflow compartments of the sump (6), at least two mobile in-dam booms (12), forming longitudinal, hollow compartments of the sump (6) are used, wherein the floating sonar module (13) is installed in series behind the second boom (11). Optionally, at least three floating sludge pumps (14) are installed to ensure the selection of preliminary compacted saponite-containing sediment, its movement to the hollow compartment of the sump (6), in which the concentration, compaction and sediment dewatering are carried out. On both sides of the booms (11) and (12), floating pumps (15) are installed for their mounting or demounting. In addition, a hydroacoustic seal of the saponite-containing sediment is used for its dewatering (16) and drying (17).EFFECT: method provides fast and high-quality clarification of large amounts of saponite-containing water, condensation and drying of the resulting saponite-containing sediment, cleaner operation of sumps.9 dwg, 1 ex

Vibration insulation system with automatic adjusting and maintaining resonance modes of machine vibration oscilations // 2637578
FIELD: machine engineering.SUBSTANCE: vibration insulation system comprises a platform mounted on the fixed base by means of elastic-viscous supports, a control unit, a frequency converter of electric energy, two transducers of unbalance position and an oscillation sensor. The control unit consists of signal matching device, a phase shift calculation unit and programmable logic controller. The elastic component of elastic-viscous supports is in the form of a cylindrical helical spring consisting of two parts with opposite ends. The first spring part has rectangular section turns with rounded edges, and the second part is made hollow. The opposite directed end of the first part is located in the cavity of the second part. The segmental profile gaps of the contacting spring parts are filled with antifriction lubricant. The packing seal is mounted at the end of the second spring part to prevent the lubricant leakage. The first part of the screw spring is enclosed by the tube of a damping material. The gaps in the first part of the helical spring which is covered by the tube of damping material, are filled with a crumble of friction material.EFFECT: automatic adjustment to resonance mode of vibration machine working element oscillation, increase of damping in the system.2 dwg

ethod and device of jet parametrical gun with two toroidal chambers for pressure waves generating and modulating in the injection well hole // 2637009
FIELD: oil and gas industry.SUBSTANCE: group of inventions is designed for the casing walls and perforations cleaning from solid deposits, decolmatation of the bottomhole formation region (BFR) and increase of formation fluids mobility. The method of the pressure waves generating and modulating in the injection well hole, in which: the jet gun is used. The gun consists of the ring channel with sharp edges on the outer and inner walls and combined with the channel of external and internal toroidal-shaped swirl resonance chambers (TSRC). TSRC are made on the walls of the channel and represent two independent acoustic oscillating systems, which are excited, when the gas flow is leaking on the sharp edges, made to meet the flow, in which both TSRC serve as the resonators. Arrange the gas flow in the ring channel. Generate the primary oscillations of small amplitude pressure in the local region near the sharp edges, when the gas flow is leaking on them. Deviate the nearwall parts of the flow inside both TSRC and intensify the amplitude of the primary pressure oscillations in both TSRC, which natural oscillation frequency is tuned into the resonance with the generation frequency of the primary pressure oscillations at the corresponding sharp edge. Pressure waves are formed in the gas flow inside the channel. Moreover, the primary pressure oscillations of different frequencies are generated on the external and internal sharp edges and intensify its amplitude in the corresponding TSRC, and additional volume resonance chamber is installed at the output from the channel. In this case, primary low-frequency pressure oscillations are generated on the external sharp edge and intensify its amplitude in the external TSRC, and on the inner sharp edge the primary high-frequency pressure oscillations are generated and intensify its amplitude in the internal TSRC. Thus, two acoustic waves of low and high frequencies are formed in the channel, which during interaction and mutual modulation, create the beat mode in the channel and form the wave packet in the channel, containing along with the primary frequencies waves and the difference frequency wave, which amplitude is intensified in the additional volume resonance chamber at the output from the channel and then the pressure wave is directed into the injection well hole.EFFECT: increase of fluid mobility in the injection well hole and enhance of mechanical effect on solid deposits.3 cl, 1 dwg

ethod and device for jet honeycomb parametrical gun for pressure waves generating and modulating in the injection well hole // 2637008
FIELD: oil and gas industry.SUBSTANCE: group of inventions is designed for the casing walls and perforations cleaning from solid deposits, decolmatation of the bottomhole formation region (BFR) and increase of formation fluids mobility. The method of pressure waves generating and modulating in the injection well hole, in which: the jet honeycomb gun is assembled from several Hartmann generators (HG). At that each HG is the independent oscillatory system, consisting of the nozzle and hollow chamber-resonator with the opening in the wall and excited by the gas jet. Arrange the gas jet beyond the nozzle in each HG and direct it into the hole in the corresponding hollow chamber-resonator wall. Generate the pressure oscillations and intensify its amplitude in the hollow chamber-resonator. The high-frequency pressure wave is generated beyond each HG, propagating in one direction with the waves from other HG and interacting with them. At the same time HG is different-frequency independent oscillating systems. One part of different-frequency independent oscillating systems is tuned to the generation, amplification and formation of the high-frequency wave of one frequency, and the other part of independent oscillating systems - to another frequency. In this case, the jet honeycomb gun is installed in the well. Form the parallel high-frequency waves of two different frequencies beyond it, interacting with each other and forming the low-frequency wave of different frequency as the result of modulation in the nearfield, which is amplified in the low-frequency resonance chamber and directed to the injection well hole.EFFECT: increase of the low-frequency pressure wave formation efficiency with high amplitude in the bottomhole formation region.3 cl, 2 dwg

ethod of liquid flow oscillations production and hydrodynamic oscillations generator // 2635740
FIELD: machine engineering.SUBSTANCE: group of inventions refers to the hydrodynamic systems and can be used in the fields of industry, that use the fluid flow pulsating condition. In the method of liquid flow oscillations production, the liquid from the pressure main 3 is directed to the vortex chamber 1 by means of the cyclonic ports 2. The liquid is then swirl to form the vortex and it is divided into the low pressure central part, that is discharged through the nozzle 8 and the peripheral part with the high centrifugal pressure, that is discharged through the side gap into the main pipe 4 with the elastic element 5. At the same time, the liquid from the pressure main 7 is directed through the additional channel 6 to the main pipe 4. In this case, the time of pressure increase in the main pipe 4 upto the centrifugal pressure value in the side gap is determined by the elasticity value of the element 5. As a result of the elastic interaction, the stable state of the vortex energy interaction with the element 5 is broken, which leads to the self-oscillations excitation of the liquid between them. In this case, the vortex rotation speed and the liquid discharge from the nozzle 8 are automatically oscillated.EFFECT: increase of the discharge fluctuations intensity.20 cl, 10 dwg

Device for generating directional inertial force // 2631011
FIELD: machine engineering.SUBSTANCE: device for generating a directional inertial force has a housing (1), crank (2), two axes - loose (3) and fixed (4), a rocker arm, designed as a connecting rod (5). At the end of the connecting rod (5) there is an eccentric weight (6). The connecting rod (5) is connected with the crank via a rotatable sleeve (7).EFFECT: increased energy efficiency of the process of mechanical vibration excitation, simplified design, elimination of an external power source connection to the movable parts of the device.3 dwg
Device for ultrasonic treatment of liquids and / or suspensions // 2629053
FIELD: food industry.SUBSTANCE: device for ultrasonic fluid treatment and/ or suspensions is proposed, comprising a housing made in the form of a cone funnel with smooth walls, in the upper part of which tangentially at a tangent to the circumference of the upper section an inlet branch pipe is built; in the lower part, the housing turns into a cylinder. On the cylinder surface, holes are arranged, and the cylinder butt is equipped with a threaded projection on which a cylindrical head made in the form of a cap is screwed. Wherein the cap skirt is made in such a way that when the cap is screwed onto the threaded projection of the cylinder, the amount of closing and/or opening the holes on the cylindrical part of the cone is adjusted.EFFECT: device ensures the impact on a liquid and/or a suspension for the intensification of physicochemical transformations and increasing the efficiency of technological processes, such as the emulsification and/or dispersion of fatty or solid particles.1 dwg

ethod for nonchemical cleaning of saponite-containing water and compaction of saponite-containing sediment // 2628383
FIELD: chemistry.SUBSTANCE: in order to carry out the method, the contaminated saponite-containing water from the source of its formation (1) through a pulp pump station (3) and pulp line (4) is discharged to the offshore part (I) of the tailing dump (9) along the entire inner perimeter. A number of floating acoustic modules with emitters (14) are installed in the peripheral part (II) of the tailing dump (9) adjacent on the inner part to the k (I) and hydroacoustic signals of the sound and ultrasonic frequency range are generated and emitted, and continuous emission of signals of low sound frequency range is generated. The hydroacoustic signals of the sound and ultrasonic frequency ranges are formed with an acoustic pressure amplitude of at least 102 Pa at a distance of 1m from the hydroacoustic radiator, they impact on saponite-containing water for degassing, hydroacoustic coagulation of saponite-containing slime particles, and compaction of the saponite-containing sediment. The formation, amplification and emission of continuous hydroacoustic signals of a low sound frequency range are carried out in the frequency range from tens of Hz to units of kHz, with an acoustic pressure amplitude of at least 103 Pa at a distance of 1m from the hydroacoustic radiator and impact on the saponite-containing sediment. During the freeze-up period, an acoustically compacted saponite-containing sediment is raised to the ice surface and laid on the ice in the non-working offshore part of the tailing dump. In the summer period, the saponite-containing sediment is thawed with separation into a finally compacted saponite-containing sediment and clarified saponite-containing water with its subsequent use in the technological process.EFFECT: method provides a quick and qualitative separation of the saponite-containing tails of the concentrating plant into two phases, the compaction of the obtained saponite-containing sediment and the body of the waterproof dam, the clarification of large volumes of saponite-containing water, and the increased environmental safety of the tailing dump operation.8 dwg, 1 ex

Semiconductor plate and method of its manufacture // 2627282
FIELD: electricity.SUBSTANCE: in a plate subdivided and separable into a plurality of crystals, each crystal comprises of an array of cells of a microprocessed capacity transducer. Each cell includes a substrate comprising of the first electrode, a membrane containing the second electrode and a cavity between the substrate and the membrane. Each cell of at least a portion of the crystals contains a compensating plate on the membrane, with each compensating plate having a configuration for influencing the deflection (h) of the membrane.EFFECT: ensured possibility of uniform deflection of the membrane and increased yield of suitable products.15 cl, 16 dwg

Capacity transducer obtained by micromachining and method of its manufacture // 2627062
FIELD: electricity.SUBSTANCE: method comprises of the steps of depositing the first electrode layer on a substrate, depositing the first dielectric film on the first electrode layer, depositing the sacrificial layer on the first dielectric film, where the sacrificial layer being is removable to form the transducer cavity, depositing the second dielectric film on the sacrificial layer and depositing the second electrode layer on the second dielectric film, forming a pattern in at least one (s) deposited layers and films. They are carried out by means of atomic-layer deposition in one single sequence of processing and the formation of the pattern is carried out by a descending technology.EFFECT: possibility of creating a transducer with improved performance.15 cl, 5 dwg

odule of ultrasonic transducer and method of excitation of head of ultrasound transducer // 2624399
FIELD: physics.SUBSTANCE: converter comprises an ultrasonic transducer head, an electrical cable for connecting the converter head to the power supply of the base station and for transferring power from the power source to the converter head, a connecting member for connecting the electrical conductor to the power source and for receiving the input voltage from the power source and a capacitor, electrically connected to the electrical conductor by means of a controlled key for the conservation of electric charge, n in this case, the capacitor has a capacitance greater than or equal to 100 μF.EFFECT: providing the possibility of working in two modes.14 cl, 7 dwg

ethod of regulation of parameters of the law of mechanical vibrations of force factors in the centrifugal vibrator // 2621175
FIELD: machine engineering.SUBSTANCE: proposed method for regulating the parameters of the law of mechanical oscillations of force factors in a centrifugal exciter that contains four unbalances, pairwise having the same imbalances, rotating at the same angular velocities that have the same initial position, when their centrifugal forces of inertia create the maximum power factors, is achieved by the change in the initial position of rapidly rotating unbalances by rotating them in any direction by an angle equal to 90°, provided that the transmission ratio of the synchronizing and phase-matching rotation of the unbalances is an even number. Perfection of equipment for transportation and separation of grain mixtures is achieved by communicating to the working bodies of traffic machines with parameters that ensure efficient flow of the process carried out in the equipment.EFFECT: variation of the speed of transportation and increasing the efficiency of the processes of separation of grain mixtures.17 dwg
ethod for controlling resonant oscillations and device for its implementation // 2620711
FIELD: physics.SUBSTANCE: resonant oscillations of the central cylindrical or spherical mass (or the physical field) associated with the outer cylindrical or spherical mass (or the mutually penetrating field), concentric with the central mass, are excited by the periodic excitation force generated by, for example, an electromagnetic vibrator. By adjusting and changing the parameters of the driving force acting on the mass. Herewith, for example, the amplitude of the inertia driving force is set to the known lower value than it is required for the rated resonant oscillation mode, the period of the inertia driving force is changed, and the adjustable parameter of the mass resonance oscillation is set up to the maximum value. Herewith, additional control programs are created, connected to the first two (central and outer) and rotating, for example, synchronously and simultaneously or in sequence with the first spherical or cylindrical masses or the interpenetrating fields. Also, the device is proposed for regulating and exciting the resonant oscillations. It comprises a central spherical or cylindrical mass (field) with a mounted thereon, for example, electromagnetic vibrator and connected to the outer cylindrical or spherical mass (or the mutually penetrating field) concentric with the central mass. Herewith, it has additional control programs connected with the first two (central and outer) and rotating, for example, synchronously and simultaneously or in sequence with the first spherical or cylindrical masses or the interpenetrating fields.EFFECT: improving the method.2 cl, 11 dwg

ethod of experiment for implementating and monitoring acoustic processes in liquid medium and device for its implementation // 2620709
FIELD: physics.SUBSTANCE: piezo element is electrically connected to the ultrasonic generator operating at a resonance frequency of the piezoelectric cell. Herewith the piezo element performs fluctuations of axial thickness. Only one side of the piezo element has the acoustic contact with the fluid. The modulator circuit is assembled by allowing to change the amplitude of the ultrasonic generator output voltage with a predetermined frequency and form. Non-linear acoustic oscillations are produced in the standing medium by creating ultrasonic oscillations therein with an intensity of more than 1 W/sq.cm. Linear acoustic oscillations are formed by amplitude modulating the ultrasonic oscillations used.EFFECT: expanding the frequency range of operating frequencies, providing operating opportunities in stagnant fluid without causing its movement.2 cl; 1 dwg

ethod of excitation of mechanical vibrations of force factors with regulated parameters // 2620484
FIELD: machine engineering.SUBSTANCE: proposed method of excitation of mechanical oscillations of force factors with adjustable parameters by a centrifugal vibration exciter containing four unbalances, pairwise having the same imbalances rotating at the same angular velocities and having an initial position in which their centrifugal forces of inertia create maximum force factors, is achieved by the change in the initial position of rapidly rotating equilibria by turning them by an angle equal to 180°, provided that the transmission ratio of the synchronizing and phase-matching rotation of the unbalances is an even number. Perfection of equipment for transportation and separation of grain mixtures is achieved by communicating to the working bodies of traffic machines with parameters that ensure efficient flow of the process carried out in the equipment.EFFECT: variation of the speed of transportation and increasing the efficiency of the processes of separation of grain mixtures.15 dwg

Capacitive transducer obtained by microprocessing and its manufacturing method // 2618731
FIELD: physics.SUBSTANCE: method comprises the steps, at which the first electrode layer is deposited on the substrate, the first dielectric film is deposited on the first electrode layer, a sacrificial layer is deposited on the first dielectric film, wherein the sacrificial layer is adapted to be removed forming the transducer cavity, the second dielectric film is deposited on the sacrificial layer and the second electrode layer is deposited on the second dielectric film, wherein the first dielectric film and / or the second dielectric film contain the first layer comprising oxide, the second layer comprising a material with high k, and the third layer comprising oxide, wherein the deposition steps are performed by atomic layer deposition.EFFECT: providing the possibility of creating a capacitive transducer with improved performance characteristics.15 cl, 5 dwg

Acoustical lens // 2618600
FIELD: physics.SUBSTANCE: acoustic lens is made in the form of a cuboid with a radial gradient of the acoustic refractive index with the cuboid edge value equal to (0.9-1.2)λN, where N=1,2, …, λ - the length of the elastic wave. The acoustic lens has a relative acoustic refractive index value of 1.1 nenv to 1.6nenv, where nenv - the acoustic refractive index of the lens environment, and a sound-permeable channel of constant cross-section is made along the optical lens axis with a characteristic transverse dimension of not more than 0.25λ, filled with a material with an acoustic refractive index, equal to ncp.EFFECT: providing an elastic wave focus to the area of a width less than the diffraction limit.2 dwg

ethod and device for technical condition estimation of the engineering structures // 2617800
FIELD: testing equipment.SUBSTANCE: generate the harmonic vibrations by applying the periodic vibration disturbances in two mutually perpendicular planes X and Y. At that provide the transmision of external force by the vibration generator also perpendicular to the planes X and Y along Z axis, the periodic vibration action adjustments are made by changing the amplitude and frequency of the working body vibrations, the obtained results are compared with the previous measurements, and then estimate the technical condition of the engineering structure. The device contains a vibratory machine with the electric motor, which shaft is connected to the working body, provided with vibrators and generating vibrations in two mutually perpendicular planes X and Y. The body of vibration machine is rigidly connected to the working body and with the investigated structure, the vibratory machine can be moved and generate vibrations along Z axis with different amplitude and frequency.EFFECT: improvement of the estimation accuracy.2 cl, 3 dwg

Torsional vibrations generator and mixer-grinder on its base // 2614907
FIELD: machine engineering.SUBSTANCE: torsional vibrations generator contains the housing 8, the platform 3, the jet disk 10, the main torsion bar, divided into two unequal parts, the nodal point 7 of the the main torsion parts connection, electromagnetic system 6. The generator is equipped with an additional torsion bar 1. The long part 2 of the main torsion is connected to the platform. The reactive disk 10 is located at the short part end 9 of the torsion bar. The nodal point 7 is rigidly connected to the housing 8. The torsion excitations is implemented by the additional torsion bar 1, connected with one end to the long part end 2 of the main torsion by means of platform 3, and with the other - to the electromagnetic exposure system 6 to the additional torsion 1.EFFECT: providing of mixing homo- and heterogeneous multi-component liquid products with high viscosity, mixing the high-viscosity liquids and powders with simultaneous grinding of powders upto the nanosizes in the mixing components medium.12 cl, 24 dwg

Generator of acoustic field in solid body // 2610570
FIELD: measuring equipment.SUBSTANCE: invention relates to measurement equipment and can be used as a generator of graduated acoustic pulses when testing diagnostic high-frequency sensor equipment. Generator of acoustic field in a solid body includes balls having the possibility of collision with the surface of a radiator for excitation of elastic waves in it, interconnected chambers, in one of which there are metal balls of equal diameter able to be transferred into another chamber by gravity and affecting the end of the radiator in the form of a cylindrical waveguide, which is installed coaxially in each chamber on the side of the base able to move along its axis, herewith the other end of the waveguide is coupled with the analyzed object, and the chambers are formed in the housing, between which and the analyzed object there is an element of control over the waveguide displacement height in the chamber, herewith the ratio of the length of the waveguide to its diameter is more than five.EFFECT: technical result is the possibility of formation in a diagnosed (analyzed) object in normal, as well as explosion-fire conditions, of successive acoustic pulse of dosed amplitude and duration without any devices with a drive providing collision, and without any energy sources for this purpose.1 cl, 2 dwg, 1 tbl

Preliminary pressed-in capacitive transducer cell, produced by micro processing, with pressed-in ring-shaped area // 2609917
FIELD: instrument making.SUBSTANCE: invention can be used for capacitive ultrasonic transducer cell creation. Summary of invention is in fact, that preliminary pressed-in cell of capacitive transducer, produced by micro processing, includes substrate having first electrode, membrane containing second electrode, external area, in which membrane is secured on substrate, internal area located inside external area or surrounded by it, wherein membrane is pressed to substrate in first pressed ring-shaped area located in internal area; and wherein cell has first conversion region arranged inside of first pressed ring shaped area or surrounded by it, and second conversion area, arranged outside of first pressed ring shaped area or surrounding it.EFFECT: technical result is enabling possibility of improving cell conversion efficiency.15 cl, 9 dwg

Process platform for acoustophoretic multicomponent separation // 2608419
FIELD: chemistry.SUBSTANCE: invention is intended for separation of impurities from fluid. Method of separating impurities from a host fluid includes steps of creating a flow chamber having a source of acoustic energy, and on opposite side of flow chamber an acoustic energy reflector, facilitating flow of host fluid through flow chamber, applying source of acoustic energy to host fluid in order to generate a three-dimensional ultrasound standing wave, wherein three-dimensional ultrasound standing wave leads to formation of acoustic radiation force, having an axial and a transverse component, having one order of magnitude. Device for separation of impurities from a host fluid comprises a flow chamber with an inlet and an outlet, through which flows mixture of host fluid and at least one of second fluid and particles, ultrasonic transducer or a plurality of ultrasonic transducers on wall of flow chamber, reflector arranged on wall on side of flow chamber, opposite transducer. Each transducer includes a ceramic crystal, which forms side of transducer. Transducer is excited by an oscillating, periodic or pulsed voltage signal at ultrasound resonance frequency. Crystal excites transducer for oscillation at irregular shift mode to generate a three-dimensional standing wave in flow chamber.EFFECT: technical result is higher capture force for acoustophoresis.27 cl, 30 dwg, 3 tbl

Ultrasound transducer device and method of manufacturing same // 2607720
FIELD: physics.SUBSTANCE: invention can be used for transmitting and/or receiving ultrasonic waves by means of an ultrasonic transducer. Essence of invention consists in that ultrasonic transducer comprises at least one cMUT cell (30) for transmitting and/or receiving ultrasonic waves, wherein cMUT cell (30) comprises cell membrane (30a) and cavity (30b) underneath cell membrane. Device additionally comprises substrate (10) having first side (10a) and second side (10b), wherein at least one cMUT cell (30) is installed on first side (10a) of substrate (10). Substrate (10) comprises substrate base layer (12) and a plurality of adjacent trenches (17a) extending into substrate (10) in a direction, perpendicular to substrate sides (10a, 10b), wherein spacers (12a) are each formed between adjacent trenches (17a). Substrate (10) further comprises connecting cavity (17b) which connects trenches (17a) and which extends in a direction parallel to substrate sides (10a, 10b), trenches (17 a) and connecting cavity (17b) together forming substrate cavity (17) in substrate (10). Substrate (10) further comprises substrate membrane (23) covering substrate cavity (17). Substrate cavity (17) is located in a region of substrate (10) underneath cMUT cell (30).EFFECT: reducing or suppressing acoustic communication of ultrasonic waves with substrate.14 cl, 32 dwg

Device and method of excitation for capacitive load excitation and, in particular, ultrasonic transducer // 2606547
FIELD: physics.SUBSTANCE: invention relates to mechanical vibration excitation devices by means of electrical equipment. Ultrasonic transducer (12) excitation device (40, 60), having one or more converter elements, comprising: output terminal (42; 68) for enabling alternating excitation voltage (VI4; V22) to load (12), plurality of voltage supply elements (46, 48, 50, 52; 72, 74) to provide intermediate voltage levels (VI6), plurality of controlled connection devices (S0-S7), each of which is connected with one off voltage supply elements (46, 48, 50, 52; 72, 74) for connection of voltage supply elements (46, 48, 50, 52; 72, 74) to output terminal (42; 68) and to supply one of intermediate voltage levels (V16) or sum of plurality of intermediate voltage levels (V16) in form of alternating excitation voltage (V14; V22) to output terminal; and second output terminal (76), wherein excitation voltage (V22) is provided between first and second output terminals (68; 76).EFFECT: technical result consists in power factor increasing and communication factor increasing.12 cl, 7 dwg

Test bench for vibration isolators resilient elements testing // 2605504
FIELD: testing equipment.SUBSTANCE: invention relates to testing equipment. On a base by at least three vibration isolators a bulkhead is secured representing a single-mass oscillating system with weight and rigidity m2 and c2, respectively. Harmonic oscillations generator used is an eccentric vibrator arranged on the bulkhead. Natural frequencies testing stand for resilient elements of spring and plate vibration isolators is mounted on bulkhead. Vibration isolators have different length, geometrical parameters, different value of loads fixed at the ends of the tested elements. Oscillations of a load fixed on each resilient element are registered by a displacement indicator, according to readings of which resonant frequency is determined, corresponding to each resilient element parameters. On the base and the bulkhead vibration acceleration sensors are fixed, signals from which are transmitted to an amplifier, an oscilloscope, a magnetograph and a computer to process the received information, herewith to adjust the bench operation a frequency meter and a phase meter are used.EFFECT: technical result of the invention is expansion of technological capabilities of testing objects having several resilient links with structural parts.3 cl, 4 dwg

Test bench for vibration isolators resilient elements testing with piezoelectric vibrator // 2605503
FIELD: test equipment.SUBSTANCE: invention relates to testing equipment. Bulkhead is secured on base by means of, at least, three vibration isolators and represents single mass oscillating system with mass and rigidity of m2 and c2, respectively. Harmonic oscillations generator used is eccentric vibrator, arranged on bulkhead. Natural frequencies testing stand for resilient elements of spring and plate vibration isolators is mounted on bulkhead. Vibration insulators are made with different length, geometrical parameters, as well as different weights value, fixed at these tested elements ends. Oscillations of mass, fixed on each resilient element, fixed by displacements indicator, according to readings of which resonant frequency is determined, corresponding to each resilient element parameters. On base and bulkhead vibration acceleration sensors are fixed, signals from which are transmitted to amplifier, then oscilloscope, magnetograph and computer for received information processing. For test bench adjustment frequency meter and phase meter are employed.EFFECT: technical result of invention is expansion of technological capabilities of testing objects having several resilient links with structural parts.4 cl, 6 dwg

Low-frequency emitter of electromagnetic energy and method of making same // 2605053
FIELD: physics.SUBSTANCE: low-frequency emitter of electromagnetic energy comprises transformers with magnetic conductor, lockable by means of emitters and secondary windings of transformers. Magnetic conductor of first transformer passes through secondary winding of second and magnetic conductor of second transformer passes through secondary winding of first. Emitters of transformers are aligned relative to each other. Also disclosed is a method of making said low-frequency emitter of electromagnetic energy.EFFECT: disclosed is a low-frequency emitter of electromagnetic energy.5 cl, 3 dwg

Pneumatic vibration exciter // 2604862
FIELD: mechanics.SUBSTANCE: pneumatic vibration exciter relates to mechanical vibrations production devices, driven by compressed air pressure and providing for reciprocating movement, and intended for use as vibration conveyors and feeders drive, as well as for wheel-free vehicles propulsion source, interacting with road surface. Disclosed vibration exciter, comprises piston with rod and central channel in it, placed into hollow housing with possibility of longitudinal displacement, divided by it into piston chamber and rod chamber, in side wall of which there is compressed air supply channel, and in end wall is hole, through which rod is brought out to outside, as well as switching device for piston chamber alternate communication with rod or with external environment. Disclosed vibration exciter feature is, that switching device in it is slide valve, formed by rod chamber end wall hole and rod, in which there are two circumferential rows of through radial holes, communicating its surface with central channel in it and arranged so, with retracted piston first from it row of holes is open into housing rod chamber, and with extended piston second row of holes is open into external environment.EFFECT: technical result is simplification of vibration exciter design and possibility of its operation without impacts.3 cl, 2 dwg

Pre-compressed cell of capacitance micro-processed converter with stressed layer // 2603518
FIELD: instrument making.SUBSTANCE: invention relates to pre-compressed cell (10) of capacitance micro-processed converter containing substrate (12) and membrane (14), covering total area (Atotal) of membrane, wherein between membrane (14) and substrate (12) there is cavity (20), membrane therein contains hole (15) and edge section (14a) surrounding hole (15). Cell (10) additionally contains stressed layer (17) on membrane (14), wherein stressed layer (17) has given value of stress relative to membrane (14), wherein stressed layer (17) is configured to provide bending moment on membrane (14) in direction to substrate (12), so that edge section 14a of membrane (14) is pressed to substrate (12). Present invention also relates to method for making such pre-compressed cell (10) of capacitance micro-processed converter.EFFECT: technical result is providing improved pre-compressed cell of capacitance micro-processed converter and method for its production.14 cl, 10 dwg

Abramov v. a. rotary motion production device // 2600953
FIELD: machine building.SUBSTANCE: invention relates to machine building, and more specifically to electromechanical drive. Rotary motion production device comprises housing, output shaft installed in supports, two wave gear flexible deformed wheels, two composite deformation waves two-wave piezo-generators, deforming flexible gear or friction wheels and levers. Single-arm levers composite supports are made double-row in axial direction. Each single-arm lever is equipped with tension adjusting device between deformable wheels and piezoelectric transducers, made in form of system of two screw-nut transmissions with helical lines different directions threads. On each single-arm lever ends journals spherical ball bearings are installed, moving in fixed base openings and located in resilient contact with deformable wheels.EFFECT: reduced radial dimensions.8 cl, 17 dwg

Vibrating machine // 2600301
FIELD: machine building.SUBSTANCE: invention relates to vibration equipment, namely to flywheel devices of mechanical vibrations exciters in construction and seismic engineering. Vibrating machine comprises cylindrical housing with vibration tables, shock-absorber with balance weight, vibration exciter with drive shaft and gear motor. Vibration exciter is made in form of solid cylinder placed inside cylindrical body of vibratory machine, and this vibration exciter solid cylinder in upper and lower its end surfaces is made in form of N sine-shaped with spans “δ” and polar pitches “τ” of rail tracks, on which there are bearing assemblies with axles attached to upper and lower ends of inner part of cylindrical housing of vibratory machine, gear motor of which is connected to frequency-controlled electric drive. Solid cylinder of vibration exciter with rail tracks can reciprocate inside cylindrical housing by “δ” value of sinusoidal stroke of rail tracks and possibility of rotation inside cylindrical housing by gear motor shaft, vibrating machine can be made with vibration exciter composed of hollow solid cylinder with upper and lower end parts of rail tracks laid and resting on bearings in vibratory machine housing, this hollow solid cylinder has possibility of back-and-forth movement in vertical direction inside vibratory machine housing and rotate at railway tracks for value of stroke “δ” by drive motors of not less than 2 pieces with disks of coupling on outer side surface of vibration exciter solid hollow cylinder of vibratory machine or by one motor with short-circuited rotor, inert mass.EFFECT: provision of high frequencies and mechanical forces at minimum amount of structural elements, which provides high reliability of vibratory machine.1 cl, 4 dwg

Ultrasonic motor // 2596177
FIELD: machine building.SUBSTANCE: invention relates to vibration devices for creation of linear movements of slider. Ultrasonic motor comprises vibrator, slider, which comes in contact with vibrator by friction, spring to press vibrator to sliding element. Vibrator also has base, support element of vibrator, holding base and connector for connection of said vibrator with said support element of vibrator. Vibrator and sliding element respectively are moved by means of vibration. Connector includes roller that freely moves base to support element of vibrator in direction of pressing said pressing element and pressing element, which presses rolling element in direction perpendicular to pressing facility direction of pressing. Connection device includes elongated section extending from support element of vibrator in direction of pressing. At that, cylindrical roller is arranged between elongated portion and base.EFFECT: higher accuracy of slider motion.8 cl, 3 dwg

Pre-collapsed capacitive micro-machined transducer cell with plug // 2595800
FIELD: machine building.SUBSTANCE: present invention relates to pre-collapsed capacitive micro- machined transducer cell (10) comprising substrate (12) and membrane (14) covering total membrane area (Atotal), wherein cavity (20) is formed between membrane (14) and substrate (12), membrane (14) comprising hole (15) and edge portion (14a) surrounding hole (15), edge portion (14a) of membrane (14) being collapsed to substrate (12). Cell further comprises plug (30) arranged in hole (15) of membrane (14), plug (30) being located only in subarea (Asub) of total membrane area (Atotal). Present invention further relates to method of manufacturing such pre-collapsed capacitive micro-machined transducer cell (10).EFFECT: technical result - improved pre-collapsed capacitive micro-machined transducer cell, in particular, for high frequencies.14 cl, 4 dwg

Electromechanical pulse device of impact-mechanical and electromagnetic effect // 2594990
FIELD: information technology.SUBSTANCE: invention relates to information security, wherein destruction of information is carried out based on both obtaining signals on unauthorised intrusion, and at desire of user. Electromechanical pulse device of impact-mechanical and electromagnetic action consists of ferromagnetic frame 1, inside of which there are coaxially arranged inductor 2, electroconductive armature 3 and ferromagnetic head 4. One flat surface of electroconductive armature 3 is connected to power disc 5. Head 4 is made with sharpened tempered end directed towards digital information storage 6. Inside frame 1 there are multiple levers, each of which consists of two opposite arms 7 and 8, separated by support 9. Flat end 4v of head 4 interacts with arm of lever 7, and power disc 5 interacts with arm of lever 8. Supports of levers 9 are fixed relative to detachable cover of frame 1. Inductor coil 2 is wound on guide sleeve 10 of head 4. Portion of surface area of power disc 5 interacting with arm of lever 8, protrudes. To increase height of protruding part of power disc 5 is equipped with pusher 11 made in form of a ring. When producing a signal inductor 2 is excited from a charged capacitive storage. Flowing pulse current in inductor 2 excites magnetic field, destroying information in storage 6. Magnetic field of inductor excites 2 eddy currents in electroconductive armature 3. Electrodynamic force thus generated causes displacement of latter together with power disc 5 from inductor. Power disc 5 via pusher 11 acts on arm of levers 8, end of which moves in direction from inductor 2. Levers turn relative to fixed supports 9 and ends of opposite arms of levers 7 move in direction of inductor 2 to apply force action on flat end 4 of head 4. Head 4 moves in direction of inductor, punching with its sharpened end digital storage 6.EFFECT: technical result is improved efficiency of protecting information stored on digital media in case of leakage due to impact-mechanical and electromagnetic effects.10 cl

ethod for reagentless treatment of quarry water from suspended substances and heavy metals // 2593607
FIELD: mining; processing and recycling of wastes. SUBSTANCE: invention can be used for reagentless treatment of industrial waste, drainage water, in diamond and mining industry, in hydraulic engineering structures for preliminary water preparation. Method for reagentless treatment of quarry water includes continuous hydroacoustic action on the purified quarry water with the help of waves of sound frequency range with hydroacoustic coagulation of heavy metals with suspended substances and their subsequent concentration in precipitation compacted by hydroacoustic seal in sequentially and functionally connected main settler 11, first 17 and second 18 additional settlers. Additionally the mid layer of quarry water is released from the output of the second additional settler. Settling section 11 of quarry water coarse purification is used as the main settler. Deepened and expanded collecting trenches 17 are used as the first additional settler, built in the area of distributed releases from water conduit for settling section 11 of quarry water coarse purification to surface filtration field 21. Second additional settler is a semi-open settler 18 - part of the surface filtration field filled with cleared quarry water. Settler-accumulator 20 is used as the third additional settler. Filtration dam 19 is additionally used, it is the output of semi-open settler and input into the settler-accumulator, and surface run-off field 21 - section of the natural landscape from the settler-accumulator 20 to input into natural water course. Quarry water hydroacoustic degassing and hydroacoustic deposition of the initial and previously coagulated suspended substances is performed by hydroacoustic waves of sound frequency range and ultrasonic frequency range radiation directed downwards. Whole volume of quarry water is released from the output of the settling section 11 of coarse purification. Mid layer of quarry water is released from the output of the second additional settler 18 through filtration dam 19 in the third additional settler 20. Hydroacoustic seal of impermeable dams bodies of all three additional settlers are performed by hydroacoustic waves of sound frequency range and ultrasonic frequency range radiation directed towards them. EFFECT: invention enables the step-by-step quality purification of quarry water to standards required by environmental laws, as well as effective reagentless precipitation seal with minimum financial and time expenditures ensuring safety for human being and environment. 1 cl, 9 dwg

Compression wave generator with launched tray piston // 2592491
FIELD: machine building. SUBSTANCE: compression wave generator may contain tray, bearing piston. Tray can also contain locking facility, upon activation of which piston is fixed in fixed position. When locking facility is in deactivated position, piston can be released and can move, at least at some distance from tray. Bearing piston tray can be located in compression wave generator housing inner channel and can move in housing inner channel the from its first end towards its second end along longitudinal axis of channel. Converter can be installed in second end of housing. Converter can be connected with medium and can convert part of kinetic energy of piston into compression wave in medium at piston dynamic impact on converter. Acceleration of piston bearing tray can be realised by applying energy to tray. After tray is accelerated in housing inner channel, it can be slowed down by applying retaining force to it, wherein piston can at least partially escape from tray and continue moving towards converting device until it impacts converting device. Besides, there are disclosed examples of methods of compression wave generator operation. EFFECT: disclosed are examples of compression wave generator configured to generate high energy compression waves in medium. 21 cl, 7 dwg

Temperature compensation device cmut // 2590938
FIELD: measuring equipment.SUBSTANCE: invention relates to measurement equipment and can be used for temperature compensation in CMUT devices. CMUT devices are used in many applications, for example, for ultrasound imaging and pressure measurement. Said devices operate by sensing a change in capacitance caused by deflection of a membrane (32) comprising one of a pair of electrodes in device by ultrasound exposure of, or pressure applied on, membrane. CMUT device may be susceptible to effects of changing temperature.EFFECT: technical result is improved accuracy of obtained data.16 cl, 14 dwg

Device for automatic tuning and maintenance of resonance modes of oscillations of vibration machine driven by induction motor // 2589639
FIELD: mechanical engineering.SUBSTANCE: invention relates to vibration equipment and can be used in various industries. Device for automatic tuning and supporting resonance modes of oscillations of vibration machine driven by induction motor comprises a control unit, a frequency power converter, two unbalance vibration sensors, position sensor installed on working member of vibratory machine. According to invention, unbalance position sensors are composed of two optocouples installed on housing of electric motor in points located symmetrically relative to rotation axis of balance weight on a horizontal line passing through axis, and balance weight is made with a hole, centre of which is located on line the centre of rotation and centre of gravity of unbalance in point corresponding to axis of sensitivity of optocouples, vibration transducer and unbalance position sensors are connected to inputs of control unit, output of which is connected to control input of frequency converter, power input is connected to external power source, and output of frequency converter is connected to induction motor.EFFECT: technical result is aimed at automatic adjustment and maintenance of resonance oscillations of working element of vibration machine, excited by unbalance inertia vibration exciter driven by induction motor, with change of parameters of mechanical system of vibratory machine due to control frequency of supply voltage.3 cl, 1 dwg

ethod for hydrodynamic excitation of oscillations and vibration machine with hydrodynamic vibration exciter // 2589460
FIELD: machine building.SUBSTANCE: presented group of inventions relates to vibration equipment, namely to mechanical vibration generators for screens, conveyors, mixers, feeders, etc. and methods of generating vibrations by means of such generators. Presented inventions provide self-tuning of vibratory machine on vibrations with natural frequency even in case of changing its mass, as well as possibility of controlling amplitude of vibration machine at fixed frequency of excitator. According to proposed method to movable part of vibratory machine cylindrical reservoir (rotor) is connected, which is then filled with low-viscosity liquid to specific volume and is driven with such speed that it is accompanied by required resonance amplitude of harmonic oscillations. At that, parameters of vibratory machine must satisfy certain relationships of linear dimensions and weight of its controlled components.EFFECT: proposed machine comprises bed, suspended container with rotating imbalance in form of hollow cylindrical reservoir partially filled with liquid, wherein mixture of liquid in reservoir depends on parameters of vibration machine and rotor speed.3 cl, 1 dwg

Capacitive micromachined ultrasonic transducer with suppressed acoustic link with substrate // 2589272
FIELD: medicine.SUBSTANCE: invention can be used for medical diagnosis by ultrasound. Array of cMUT (capacitive micromachined ultrasonic transducer) cells is formed on individually isolated massive plates on a substrate Mass of each plate provides an inertial force in opposition to force and motion of transmission by cell which reduces resultant translation of motion in plate. Reduction in motion results in less coupling of acoustic energy into substrate and contamination of signals of adjacent cMUT cells by lateral waves. Unwanted wave coupling into substrate can be further damped by compliant or sparse periodic mounting of massive plates on substrate.EFFECT: technical result is possibility of acoustic insulation of cMUT cells from substrate.21 cl, 8 dwg

Spherical ultrasonic hifu converter with modular receiving cavitation element // 2589247
FIELD: instrument making.SUBSTANCE: invention can be used for controlled heating of body tissues by means of high-intensity focused ultrasound. Invention consists in that ultrasonic HIFU transducer has a threaded opening into which a modular cavitation sensor is located. Modular cavitation sensor includes a modular housing containing a piezoelectric transducer for sensing acoustic signals indicative of cavitation. Modular cavitation sensor has electrodes which engage spring contacts in threaded opening when modular housing is screwed into threaded opening.EFFECT: technical result is enabling unscrewing and simple replacement without connectors or soldering damaged sensor.15 cl, 12 dwg

Hydraulic vibrator // 2587496
FIELD: vibration equipment.SUBSTANCE: invention relates to vibration equipment and can be used as generator of mechanical oscillations, for example, in hydraulic presses for pressing of wood or excavation machines for cutting of root systems of mature trees and stumps. Proposed hydraulic vibrator comprises housing, rigidly connected with distribution panel, equipped with check valves, connecting it with channels of rotary valve made in form of shaft with radial holes, and hydro valve installed with possibility to connect vibrator cavities to working cavities of power hydro cylinders, wherein rotary distributing valve is made in form of shaft with pairwise parallel radial holes, while working cavities of hydraulic cylinders are connected to each other through additional check valves.EFFECT: technical result consists in simplifying design and expansion of technological capabilities due to obtaining of intermittent load on pistons of hydraulic cylinders at rated pressure.1 cl, 2 dwg

ethod of adjusting parameters of law of mechanical oscillations of power factors in centrifugal vibration exciter // 2584850
FIELD: machine building.SUBSTANCE: invention relates to vibration equipment, particularly to agroindustrial complex, and can be used for grain processing enterprises in the process and transport equipment. Invention can also be used in industries related to processing of loose materials. Proposed method of adjusting parameters of law of mechanical oscillations of power factors in centrifugal vibration exciter comprises four unbalance in pairs with identical imbalances rotating with identical by value of angular velocities, which have initial position, when their centrifugal forces of inertia created maximum value of power factors is achieved by varying initial position of unbalance slowly rotating by turning in any direction through angle equal to product of quotient from division of 90° by value of gear ratio transmission, synchronising and matching phase rotation of eccentric, by an odd number of interval values from one to four times value of gear ratio provided that transmission ratio is an even number. Improvement of equipment for transportation and separation of grain mixtures is achieved by linking working elements of machines with parameters ensuring effective flow carried out in process equipment.EFFECT: variation of speed of transfer and higher efficiency of separation of grain mixtures.1 cl, 13 dwg

agnetostrictive transducer // 2579641
FIELD: physics.SUBSTANCE: magnetostrictive transducer is made from a strip of a magnetostrictive material which is rolled up into a cylindrical body and has an exciting coil. Along the edge of the cylinder there is at least one through-window and the exciting coil passes through the window and is placed on segments of the cylinder, wherein the wall thickness of the cylinder is determined by the required transducer power.EFFECT: improved specific characteristics of the transducer and high efficiency thereof, since the structure of the transducer has high dynamic stability and does not require layers gluing.1 dwg

Vibration exciter // 2578745
FIELD: electronic equipment.SUBSTANCE: vibration exciter is intended for excitation of mechanical oscillations and can be used to generate oscillating motion of various vibration devices. In housing (1) with inner cylindrical surface there is driving link (2) with segmental projections (4), rotation axis of which is shifted relative to axis of housing (1), and slider (3), moving along chord segment projections (4) interacts with housing (1). Upon rotation of driving link (2) in housing (1) changes centre distance of slider (3) from axis of driving link (2), causing a change in kinetic energy of slider (3) from Tmax to Tmin.EFFECT: technical result is improvement of reliability of structure of vibration exciter.1 cl, 8 dwg
 
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