Generating or transmitting mechanical vibrations in general (B06)

B06            Generating or transmitting mechanical vibrations in general(3384)

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

ethod of exciting mechanical vibrations of power factors with controlled parameters // 2578259
FIELD: agriculture.SUBSTANCE: invention can be used at grain-processing enterprises in the process and transport equipment. Proposed method is achieved by varying initial position of slowly rotating balance weights to position whereat their force of inertia creates power factor equal to zero, provided that gear ratio of transmission synchronising and correlating rotation of balance weights in phase is an even number which when divided into two equals to odd number.EFFECT: technical result consists in expansion of functional capabilities of vibration exciter.1 cl, 10 dwg

ethod of exciting mechanical vibrations of power factors with controlled parameters // 2578257
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. Method consists in excitation of mechanical oscillations centrifugal vibration exciter, containing four unbalance in pairs with identical imbalances rotating with identical by value of angular velocities. Note here that they have initial position, in which their centrifugal forces of inertia created maximum value of power factors, which is achieved by varying the initial position of the unbalance slow turning in any direction through angle equal to product of quotient from division of 180° on the value of gear ratio transmission, synchronising and co-ordinating phase rotation of eccentric, on an odd number of interval values from one to double value of gear ratio provided that gear ratio is even number.EFFECT: technical result consists in possibility of varying speed transportation and improved efficiency of separation of grain mixtures.1 cl, 14 dwg

ethod of charging hydraulic accumulator of drive system of three-valve gas distributor of internal combustion engine using piezoelectric pump // 2576732
FIELD: engines.SUBSTANCE: invention relates to gas distribution in internal combustion engines (ICE). Concept of this invention is as follows: drive system of a three-valve gas distributor includes a control system, an electric power source, a pack of piezo-ceramic elements of a piezo pump with piston and check valves, gas distributor drive system hydraulic accumulator and compensating hydraulic accumulator. For charging the accumulator the control system converts the power source voltage into the movement of the piezo pump piston feeding the hydraulic accumulator. During return movement of the piezo pump piston, fluid from the compensating hydraulic accumulator via the check valve arrives into the piston hamber of the piezo pump preparing it for the next charging cycle.EFFECT: technical result consists in improvement of the system efficiency.1 cl, 1 dwg

ethod of charging hydraulic accumulator of drive system of distribution valve internal combustion engine using piezoelectric pump // 2576722
FIELD: engines and pumps.SUBSTANCE: invention relates to the timing of internal combustion engines (ICE). Invention consists in the fact that the control system converts the voltage of the electricity to alternating pulses of electricity which are fed to the package of piezoceramic elements in the piezopump leading piston making oscillations and pumping hydraulic fluid. Fluid flows through the check valve in the accumulator system, and into the cavity of the piston piezopump fluid flows through the check valve of the compensating accumulator. To open the engine valve the timing control system puts a fluid flow control valve to a position in which it is supplied from the accumulator into a corresponding cavity of the piston valve timing and connected thereto a gas distribution valve opens. To close the valve timing control system operates in reverse order.EFFECT: technical result is to increase the efficiency of the system.1 cl, 1 dwg

ethod of generating mechanical vibrations // 2575763
FIELD: physics.SUBSTANCE: method employs a device consisting of two inert bodies linked by a block linkage mechanism which in turn consists of two links and one crankshaft. The inert bodies vibrate in mutually perpendicular directions by exchanging energy through the block linkage mechanism.EFFECT: obtaining mechanical vibrations in a wide frequency range.1 dwg

echanical vibration concentrator // 2574171
FIELD: physics.SUBSTANCE: concentrator is in the form of a solid rod, at the free end of which a disc is placed coaxially, said disc having acoustic contact with the rod and the diameter of the disc being selected such that the antinode of flexural standing waves is situated at the edge of the disc, at the centre of the disc in the first case of a node and in the second case of the antinode of flexural standing waves; the length of the rod is selected such that the antinode of longitudinal standing waves, in both the first and second cases, is situated at the free end of the rod on the side of the working medium. Mechanical vibration converters are placed on the edge of the disc and perpendicular thereto, such that the energy of flexural vibrations is concentrated at the centre of the disc. At the free end of the rod there is a tool which transmits the effect of longitudinal mechanical vibrations to the working medium.EFFECT: high density of energy of mechanical vibrations.1 dwg

edical device with ultrasonic transducers integrated into flexible film // 2573443
FIELD: medicine.SUBSTANCE: use: for ultrasonic diagnosis. The substance of the invention consists in the fact that an ultrasonic transducer assembly comprises a flexible film having openings extending from upper to lower surfaces of the above flexible film, one or more piezoelectric elements integrated into the above openings; an insulation layers securing one or more piezoelectric elements to an inner edge of the above openings; one or more conductive layers applied on the above flexible film and on one or more piezoelectric elements.EFFECT: making it possible to improve the quality of parameters adjustment of the transducer assembly.15 cl, 18 dwg

ethod of automatic setting of resonant modes of oscillations of vibration machine driven by induction motor // 2572657
FIELD: machine building.SUBSTANCE: on the work element of the vibration machine the periodic exciting force acts, it arises during the balance weight rotation of the inertial vibration exciter driven by the induction motor; rotation speed of the balance weight is changed by frequency change of the power voltage depending on phases shift between oscillations of the working element and periodic exciting force; wherein the phases shift is determined as per signals from sensor of angular position of the balance weights and sensor of the working element oscillations.EFFECT: excitation and keeping of the resonant oscillations of the working element of the vibration machine excited by the unbalance inertia vibration exciter driven by induction motor, upon change of parameters of the mechanical system of the vibration machine due to frequency control of the power voltage.1 dwg

ethod of round external polishing with ultrasound oscillations imposition // 2569865
FIELD: machine building.SUBSTANCE: prior to polishing the blank is installed on the radiating mandrel to impose the ultrasound oscillations between the radiator of ultrasound oscillations and reflecting nut. Maximum amplitude of blank oscillations is ensured by selection of radiator and nut size on the condition of equality of total length of the radiating mandrel, blank and reflecting nut at length of wave of ultrasound oscillations. Upon completion of the polishing the blank together with mandrel is removed from the machine, and on it the ultrasound oscillations application is continued beyond the treatment zone.EFFECT: period of stability of the polishing disk is increased, as well as capacity of treatment and quality of polished parts.1 dwg

Device and method for fixing electromechanical composite high-frequency vibration systems // 2568141
FIELD: electricity.SUBSTANCE: present invention relates to devices intended for the generation of electromechanical combined high-frequency vibrations by a composite high-frequency vibration system. The device intended for the generation of electromechanical oscillations (1) comprises at least one element generating high-frequency oscillations and at least one fixing element (4) to generate pressure to the element (1) generating the oscillations, at that one fixing element (4) is located outside the effective surface of at least one element (1) generating the oscillations. At that the load is transferred from the fixing element to the composite high-frequency system at minimum mechanical oscillations, which occur in the longitudinal direction of the composite high-frequency vibration system.EFFECT: suggested invention allows fixing of the electromechanical composite high-frequency vibration systems without the reduced effective surface of elements generating ultrasonic oscillations.16 cl, 6 dwg

ethod and device creating weight oscillating movement // 2568042
FIELD: machine building.SUBSTANCE: invention relates to the method and device creating weight oscillating movement, in particular tool. Said group of inventions includes the method creating weight oscillating movement, device creating weight oscillating movement, and method for solids or liquids treatment using the method creating weight oscillating movement. At that the method creating weight oscillating movement, in particular of tool, where weight (50) is located in the direction of oscillations spreading between at least two clamping elements (10, 20), is connected with the later mechanically and is fixed between them under pressing force (F), at that clamping elements are components of the resonant system, in which the disturbing oscillation is added, its frequency mainly coincides with the resonant frequency of the resonant system, as result the resonant system executes oscillations. Device creating weight oscillating movement, containing weight (50), in particular tool (90), resonant system, using which weight (50) is provided with acceleration, and oscillations generator (60), using it the disturbing oscillation is generated, its frequency mainly corresponds to the resonant frequency of the resonant system, and differs in that the resonant system components are at least two clamping elements (10, 20), with which the weight (50) is connected mechanically, and exactly weight (50) is fixed between the clamping elements (10, 20), and is clamped between them under pressing force (F).EFFECT: technical result is creation of economic and easy method and device creating heavy weight oscillating movement with high frequency and/or high amplitude Due to weight fixation and clamping between the clamping elements the weight is involved in oscillations, at that it due to compression force provided by one of clamping elements shifts in the direction of another clamping element.12 cl, 5 dwg

ethod of oscillations generation of liquid flow and generator of flow oscillations // 2560866
FIELD: machine building.SUBSTANCE: under method of oscillations generation of the liquid flow the liquid from main line (6) is divided to flows, supplied to swirling channels (4) and (5), and is swirled in vortex chamber (2) in opposite directions. At that near channels (4) and (5) in sections plane of the chamber (2) the pressure at axis of liquid rotation is minimum, and in zone of active mixing of the opposite swirled flows it is maximum. The swirled flow from channels (4) having high tangential component of speed is discharged with minimum flowrate through output nozzle (3). Pressure in chamber (2) abruptly rises and acts on the partition (11). As result of resilient interaction with volume of medium filled elastic cavity via the partition (11), reverse pressure pulse reduces intensity of rotation of the opposite swirled flows. Tangential speed reduces, opposite swirled flows stop, and liquid flowrate through nozzle (3) abruptly increases.EFFECT: increased power of oscillations generation due to reduced hydraulic losses and increased weight of interacting flows, and reduced dimensions, simplified design and extension of application conditions.13 cl, 3 dwg

Curved ultrasonic hifu-converter with preliminarily formed spherical adjustment layer // 2553496
FIELD: medicine.SUBSTANCE: invention relates to medical equipment, namely to diagnostic ultrasound systems. Curved converter of high-intensity focused ultrasound (HIFU) contains curved piezoelectric matrix, which has opposite convex and concave surfaces, with concave surface being transmitting surface, and multitude of zones of acoustic transmission. Multitude of electrodes is located on surfaces of curved piezoelectric matrix. Curved adjustment layer, formed in monolithic, continuous way, is formed with required curvature of curves matrix of converters, and is attached to transmitting surface. Printed circuit board and back plate are located on side of matrix, opposite to adjustment layer, with back plate limiting air channel between printed circuit board and plate, and printed circuit board limits air channel between printed circuit board and matrix.EFFECT: application of invention makes it possible to facilitate giving required shape to converter.15 cl, 13 dwg

ethod for growting water-soluble kalium dihydrophosphate (kdp) monocrystals // 2550877
FIELD: chemistry.SUBSTANCE: invention refers to kalium dihydrophosphate (KDP) optical monocrystal growth process with the above crystals that can be applicable, e.g. in manufacturing of active elements of parametric laser conversion devices for quantum optics. The KDP monocrystals are grown of undercooled aqueous solution on a preset fuse, which is isolated by walls made of a chemically sterile sound transparent membrane; a solution passed through a cleaning system is supplied into the isolated growth area, whereas the crystal growth is performed with the fuse exposed to an acoustic field at an amplitude of 105-106 Pa and a frequency of 0.5-2.0 MHz at a spatial gradient of less than 105 Pa/cm in the acoustic field scanning mode as shown by the growing crystalline surface.EFFECT: higher growth rate and optical crystal uniformity.4 cl, 3 dwg, 3 ex

Ultrasonic cleaner of deposits in heat exchangers // 2549917
FIELD: electricity.SUBSTANCE: invention is referred to ultrasonic equipment and heat power industry and may be used for cleaning from deposits of different purpose heat exchangers. The installation comprises a secondary heat source connected through inverter to inputs of magnetostrictor; its one output is connected kinematically to process control object connected kinematically to vibration gauge in order to send signal to the microcontroller connected to display unit. One of the microcontroller inputs is connected to magnetostrictor through current sensor and scaling amplifier; two outputs of the microcontroller are connected through generators with direct digital synthesis of frequency (DDS-generators), one of them is designed to generate signal of triangle shape with further straightening and amplifying while the other is designed to generate sinusoidal signal with further straightening, with pulse-width modulator and through driver with one leg of inverter made as per bridge scheme, and the third output of the microcontroller through the other drives with the other leg of inverter.EFFECT: improving quality of ultrasonic cleaning for heat exchangers.2 dwg

ethod of excitation of acoustic oscillations in conducting materials // 2549614
FIELD: measurement equipment.SUBSTANCE: invention describes a method of excitation of acoustic oscillations using electromagnetic and acoustic (EMA) method with the use of the phenomenon of EMA-resonance and can be used in nondestructive examination, in particular, of low-conducting materials. In the top layer of the tested product the vortex currents are generated and occurrence and distribution of acoustic oscillations is initiated, and the exciting field frequency is selected from the conditions of equality of lengths of waves of electromagnetic and acoustic fields, and the phase is adjusted until coincidence of spatial distribution of the driving force with strains of a crystal lattice.EFFECT: improvement of efficiency of excitation of acoustic oscillations by electromagnetic and acoustic method.2 cl, 3 dwg

Stiff structure of eccentric con-rod and generator of vibrations // 2549542
FIELD: transport.SUBSTANCE: this invention relates to stiff structure of eccentric con-rod and generator of vibrations. Claimed invention comprises stiff structure of eccentric con-rod and generator of vibrations including said stiff structure of eccentric con-rod. Note here that said stiff structure of eccentric con-rod comprises rotary drive (20) with drive shaft (21). Eccentric con-rod (30A, 30B) is shaped to, in fact, a bar with offset weighed section (33) on the side of first end (31) and con-rod section (34) engaged with said drive shaft (21) on the side of second end (32). Said con-rod is revolved by force transferred from rotary drive (20) via drive shaft (21). Oscillating section (40) has bearing section (44) inside the section located nearby said first end (41) so that said first end (31) of con-rod (30A, 30B) is fitted in said bearing section (44). Note here that said offset weighed section (33) has first central axis (33t) extending in lengthwise direction of said offset weighed section (33). Note here that said section (34) has second central axis (34t) extending in lengthwise direction of said section (34). Here, extension line (34s) is defined by extension of said second central axis (34t) in direction of said offset weighed section (33). Angle (θ) between said first central axis (33t) of offset weighed section (33) and said extension line (34s) is larger than 0° and not over approximately 10° at the state whereat said first end (31) of con-rod (30A, 30B) is not fitted in said bearing section (44) so that con-rod (30A, 30B) is locked so that said first end (31) of con-rod (30A, 30B) regularly pushes inner peripheral of said bearing section (44).EFFECT: decreased noise at low and high rpm.6 cl, 10 dwg

Device for ultrasonic processing // 2548344
FIELD: process engineering.SUBSTANCE: invention relates to ultrasound hardware and can be used for processing of refractory, non-rusting alloys, fragile materials, say, ceramics, glass, etc. This device comprises the main oscillatory system. The latter comprises reflecting strap, main radiating strap, main concentrator and main piezo-elements arranged between said main reflecting and radiating straps. Besides, it includes, the extra oscillatory system arranged inside the main one and aligned therewith and including extra reflecting strap with extra concentrator and extra piezo-elements arranged between extra reflecting and radiating straps. Note here that said main concentrator is made integral with said main radiating strap. Note also that said extra concentrator is arranged ahead of said main concentrator and rigidly coupled therewith. Sizes of device elements are definitely dependent on the wavelength of oscillations of the main oscillatory system.EFFECT: enhanced performances and higher efficiency.4 cl, 7 dwg

Thermoacoustic radiator // 2545312
FIELD: physics.SUBSTANCE: radiator contains a heat-conducting substrate on the working surface of which the parallel extended structures in the form of ledges of prismatic shape are formed which have alloyed surface layers with considerably larger electric conductivity, than the substrate. The extended structures are connected to the conducting contact areas formed on the substrate. Surfaces of the substrate and the heat-emitting structures are covered from above with a nanodimensional layer of silicon dioxide.EFFECT: improvement of reliability, specific acoustic power and maximum frequencies of radiated acoustic oscillations.1 dwg

Ultrasonic hifu-transducer with non-magnetic conducting through connections // 2544878
FIELD: medicine.SUBSTANCE: invention refers to ultrasonic transducers used in medical equipment. Substance: high-intensity focused ultrasound (HIFU) transducer comprises a piezoelectric grid with a layer of a piezoelectric material having patient-facing front surface and back surface. The front surface comprises an emitting surface and a number of electrodes arranged on the front and back surfaces of the piezoelectric material for signal injection on the piezoelectric grid. The electric connection between the electrode on the back surface with the electrode on the front surface of the piezoelectric grid are joined by non-magnetic conducting connections extending through the layer of the piezoelectric material.EFFECT: developing the ultrasonic transducers.14 cl, 13 dwg

ethod and device for generating wave field at injector bottomhole with automatic tuning of generation constant frequency // 2544201
FIELD: oil and gas industry.SUBSTANCE: group of inventions is related to the oil producing industry and intended for the improvement of oil recovery of productive formations. The method for generating a wave field at an injector bottomhole with the automatic tuning of a generation constant frequency lies in the generation of pressure fluctuations in a fluid flow pumped to a productive formation through tubing strings by its pumping through the flow-excited Helmholtz resonator (FEHR). At that the flow rate at a cross-section of an input nozzle and the distance between the input nozzle and a bushing with a discharge outlet is maintained. Moreover the flow rate at the cross-section of the input nozzle and the distance between the input nozzle and bushing with the discharge outlet is maintained due to the movement of the bushing with the discharge outlet, thus ensuring an increase of this distance at an increased flow rate and the above decreased distance at a reduced flow rate. The device used to this end consists of FEHR installed inside the tubing string; it represents a hollow cylindrical chamber with flat bottoms, wherein the input nozzle is placed in the front bottom and the bushing with the discharge outlet is placed in the rare bottom. At that the bushing with the discharge outlet is made movable and inside the tubing string behind FEHR there is a fixed hydraulic cylinder with a spring-supported piston connected by a rod to the fixed bushing with the discharge outlet. At that the cavity inside the hydraulic cylinder in front of the piston is communicated downstream to the annular space while the cavity behind the piston is connected to the inner volume of the tubing string.EFFECT: improved efficiency of the stable frequency generation of pressure fluctuations at the bottomhole.4 cl, 1 dwg

ethod and device for generating wave field at injector bottomhole with automatic tuning of generation resonant mode // 2544200
FIELD: oil and gas industry.SUBSTANCE: group of inventions is related to the oil producing industry and intended for the improvement of oil recovery of productive formations. The method for generating a wave field at an injector bottomhole with the automatic tuning of a generation resonant mode lies in the generation of pressure fluctuations in a fluid flow pumped to a productive formation through tubing strings by its pumping through the flow-excited Helmholtz resonator (FEHR). At that the respective flow rate and the FEHR volume is maintained at the cross-section of a feed nozzle. Moreover the respective flow rate at the cross-section of the feed nozzle and the FEHR volume is maintained due to the movement of its downstream rare bottom, thus increasing the FEHR volume at a reduced flow rate and reduced FEHR volume at an increased flow rate. The device used to this end consists of FEHR installed inside the tubing string; it represents a hollow cylindrical chamber with flat bottoms. In the front chamber of the bottom the feed nozzle is mounted and a discharge outlet with sharp edges is made at the rare bottom. At that the rare bottom is made movable and inside the tubing string behind FEHR there is a fixed hydraulic cylinder with a spring-supported piston connected by a rod to the movable rare bottom. At that the cavity inside the hydraulic cylinder in front of the piston is connected downstream to the inner volume of the tubing string while the cavity behind the piston is communicated to the annular space.EFFECT: improved efficiency to maintain the stable high intensity of the wave field at the bottomhole.4 cl, 2 dwg

ethod of exciting hydroacoustic waveguide converter and device therefor // 2543684
FIELD: physics.SUBSTANCE: excitation of a waveguide converter includes a process of converting electrical energy into the energy of a leaky wave propagating in an elastic waveguide. Wave excitation is carried out with a rod-shaped piezoelectric bundle, inversely placed inside a hollow gas-filled cylindrical waveguide, and inversion of the front of the longitudinal wave in space is provided by reflection thereof from the external unloaded surface of the matching cover plate.EFFECT: providing a directed acoustic field with a low level of reverse radiation, operation in a wider frequency band while maintaining reversibility, high sensitivity and radiated power, considerable reduction of weight and size.6 cl, 5 dwg

Vibration exciter // 2543676
FIELD: machine building.SUBSTANCE: vibration exciter contains casing (1) with discharge channel (23). Inside the casing (1) a shaft (8) is installed with first and second supply channels (11, 15) and central channel (12), and a rotor (3) and a breaker (7). Tangential nozzles (10) of the breaker (7) and tangential nozzles of the rotor (3) are connected with the central channel (12) of the shaft (8). Axial nozzles (5) of the rotor (3) interact with jumpers of the breaker (7). The second supply channel (15) is connected with axial nozzles (5) of the rotor (3) via the through channels (16) of the shaft (8), through channels (17) of the rotor (3) and ring cavity (18) created between them.EFFECT: possibility of independent adjustment of oscillations frequency and amplitude, assurance of work stability under low frequencies.3 cl, 3 dwg
 
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