Fluid-pressure actuators and hydraulics or pneumatics in general (F15)
F15 Fluid-pressure actuators; hydraulics or pneumatics in general(8943)
F15B - Systems acting by means of fluids in general; fluid-pressure actuators, e.g. servomotors; details of fluid-pressure systems, not otherwise provided for (motors, turbines, compressors, blowers, pumps f01-f04; fluid dynamics f15d; fluid clutches or brakes f16d; fluid springs f16f; fluid gearing f16h; pistons, cylinders, packing f16j; valves, taps, cocks, actuating-floats f16k; safety valves with auxiliary fluid operation of the main valve f16k0017100000; fluid-operating means for valves f16k0031120000; pipes, pipe joints f16l; lubricating f16n)(7282)
FIELD: ecology; power engineering.SUBSTANCE: group of inventions relates to production of ecologically clean electric power via limited pressure osmosis in a closed circuit by means of a sequence with periodic charge or by means of a continuous sequence using two sections. One of sections is a lateral pipeline released from interaction, in which there is replacement of diluted concentrate with high mineralization with a fresh solution. Other section is a device with a closed circuit with three parallel-connected modules, where low mineralization solution is fed and where part of diluted concentrate with high mineralization undergoes recirculation through modules. Other part is used for electric power generation by means of turbine and three electric generators. Periodic connection of lateral pipeline with a solution with high mineralization and closed circuit enable replacement of compressed diluted concentrate with high mineralization with a fresh solution without stopping electric power generation.EFFECT: group of inventions is aimed at electric power generation by means of limited pressure osmosis.10 cl, 15 dwg
FIELD: machine engineering.SUBSTANCE: hydraulic drive is intended for driving the valves of the ventilation and fire doors, gates, hatches, and other mechanisms installed in the underground mines, pits and other underground structures and their ground structures, explosion hazardous mine gases and/or combustible dust, at high time requirements for transferring the mechanism elements using a manual drive. The hydraulic drive includes a power hydraulic cylinder, a piston pump combined with a working fluid storage capacity, a screw drive of the piston pump, a worm gear, a motor, a flywheel for manual driving the piston pump with a switching clutch, connecting pipes for supplying hydraulic fluid from the piston pump to the power cylinder. The switching valves are installed on the pipelines to connect the piston pump and the power cylinder.EFFECT: reducing the number of the pipelines and the control valves, the absence of the hydraulic pump station and the tank of the working fluid storage, reducing time for transferring the mechanism elements and loads on the staff using the manual drive.2 cl, 2 dwg
FIELD: machine engineering.SUBSTANCE: hydraulic unit contains a hydraulic tank of supporting structure, two immersed pumps, which are mounted on the top plate, the switching system and technologically interconnected the working reagent control system, containing the pressure and level sensors, heat exchanger, cleaning filters with dirt sensors, drain system, at that, the internal space of the hydraulic tank is hermetically divided by longitudinal partition into two sections, where the transverse partitions are fixed vertically with a gap to the bottom, inclined towards the drain, and the control system has the integral sensor of the water content in the working reagent, and the inlet nozzles are located in the upper part of the sections on the end wall of the hydraulic tank opposite from the immersed pumps and in the bottom there are working reagent discharge nozzles, and the intake manifold with switching device, receiving the working reagent from the pump bearing unit, is mounted between them, two removable hatches are mounted on the top plate of the hydraulic tank, and the control system is equipped with the bypass line, bypassing the heat exchanger.EFFECT: reliability increase.4 cl, 3 dwg
FIELD: machine engineering.SUBSTANCE: system includes a control unit connected with the pneumohydraulic drive of the ball plug rotation. The emergency doubler is with a hand pump. Two cavities are formed with the appropriate pre-saddle and post-saddle fittings in the ball valve saddle zone formed as a stepped piston. The system further contains a check valve with the piston type erosion, the input of which is connected with an outlet branch pipe of the selective valve and the first branch pipe of the three-way manual valve. The body cavity of the check valve is connected with the pre-saddle fittings of each saddle. The body cavity outlet of the check valve is connected to atmosphere and closed by the shut-off element. The over-piston valve cavity is connected with all post-saddle and the second branch pipe of the three-way manual control crane, the third branch pipe is connected to the cylinder cavities of the pneumohydraulic drive, the latter are connected via the control unit with atmosphere or with the outlet branch pipe of the shuttle valve. The three-way crane establishes two operating positions: the first position - "closed manual control", in which the first branch pipe line is blocked, and the second and the third branch pipes are interconnected, and the second position - "open manual control", in which the third branch pipe line is blocked, and the first and the second branch pipes are interconnected .EFFECT: performance improving.4 dwg
FIELD: control device.SUBSTANCE: disclosed is fluid medium flow control device containing throttle cartridge, diaphragm unit and control element. Throttle cartridge forms supply channel and upper flat surface. Cartridge supply channel is located along volume booster supply path, and upper flat surface is located along volume booster discharge path. Diaphragm unit forms discharge channel passing along discharge path. Control element is arranged with possibility to displace in throttle cartridge and comprises supply gate, discharge gate and rod. Supply gate interacts with cartridge supply channel, and discharge gate interacts with discharge channel. Discharge gate additionally contains lower flat surface, which is coplanar with throttle cartridge upper flat surface.EFFECT: improving control accuracy.20 cl, 6 dwg
FIELD: oil industry.SUBSTANCE: group of inventions refers to oil industry and is intended for removing solid deposits from walls of casing pipes and perforation apertures, decolmatation of the formation bottomhole zone and increasing mobility of the formation fluids. In the method of pressure waves generation at the bottom of the well a Helmholz spray oscillator (HSO) is installed on the lower end of a tubing string (TS), representing an oscillating system excited with a spray of fluid flowing through it and consisting of a spray generator positioned inside the chamber of the volume resonator. Herewith primary pressure oscillations of certain frequency in a spray of liquid are generated with the spray generator and the oscillating system is excited with them. Primary pressure oscillations are amplified in the chamber of the volume resonator, natural frequency of which is tuned with resonance to generation frequency of primary pressure oscillations. Pressure waves at the bottom hole are created. Herewith another chamber with an opening is installed behind the chamber of the volume resonator, thus forming the oscillating system having three natural frequencies not corresponding to natural frequencies of its separate elements. Primary pressure oscillations generation frequency is adjusted at the highest natural frequency of the oscillation system. Herewith the oscillating system on all the other natural frequencies is excited and pressure oscillations are generated on the lowest natural frequency.EFFECT: technical result is higher efficiency of generation of low-frequency oscillations at the bottom hole with a high-speed spray.2 cl, 2 dwg
FIELD: mechanical engineering.SUBSTANCE: invention relates to mechanical engineering, particularly to double-acting cylinders with double rod with the straight reciprocating motion of the output link, and can be used in horizontal or vertical hydropercussion mechanisms (hydraulic hammers), which are used for dipping of long rod elements, such as piles, reinforcing bars, pipes into the soil. The hydraulic cylinder comprises a cylinder, rod with a false rod, ends of which extend through the cover closing the cylinder ends, the piston rod, at that, the rod is connected with the false rod through a pivot bearing and retaining rings, and the piston rod is connected to the rod by a stop nut and locking half-rings.EFFECT: invention increasing reliability of resource of turbo-generator.2 dwg
FIELD: engines.SUBSTANCE: device, method and application are intended for generator drive. Device comprises pump with rotary blades for creation of volumetric flow of working medium, driven by working medium volumetric flow constant power engine for generator drive, pump capacity regulator with measuring diaphragm for control over pump with rotary blades volumetric flow, wherein in bypass of constant power engine bypass line is arranged with volumetric flow control valve through bypass line. Besides, in device provided is second bypass lone bypassing constant power engine, having two-way valve, wherein control valve and two-way valve are made integrated into single unit. Method consists in the fact that, generator speed control is performed first by means of rough adjustment using pump capacity regulator, wherein setting volumetric flow to value, which is formed from nominal value and excess, then fine adjustment is performed using control valve in bypass line.EFFECT: technical result is simplification of generator rotation speed control.9 cl, 1 dwg
FIELD: machine building.SUBSTANCE: invention relates to the accumulating design for the gear shift. The design includes a tank for hydraulic medium, a transfer pump coupled to the tank via the first line, a direction and speed control valve connected with a pump via the second line for the transmission medium, a battery, a piston and a spring element. The battery is connected with the transfer pump via the third line for the transmission medium, wherein the battery comprises a housing making a cavity, a piston mounted in the cavity and able to move in the longitudinal direction of the housing, and a spring element mounted between the closed end of the housing and the piston and able to deform elastically in the longitudinal direction of the housing. The piston is connected with the third line for the transmission medium on the side facing away from the spring element.EFFECT: invention simplifies the accumulating design.6 cl, 3 dwg
FIELD: manufacturing technology.SUBSTANCE: invention relates to pneumatic drive controllers, particularly to a wireless pneumatic controller for controlling pneumatic drives. Pneumatic controller comprises a housing connected to drive. Housing has a device for monitoring position with a wireless communication interface. Pneumatic controller also comprises pneumatic control module, connected to housing and operably coupled with drive.EFFECT: simplification of control system.29 cl, 5 dwg
FIELD: machine building.SUBSTANCE: cylinder is intended for working member moving from one position to another. Cylinder consists of housing, including cylinder, front cover, having through holes for working balls inlet-outlet, branch pipe, having hole for piston rod output, in which wall annular grooves are arranged, filled with balls, rear cover having through holes for working balls inlet-outlet, separator, and piston, which is working element and consisting of rod and piston, having annular grooves on its outer surface, filled with balls, and intended for performance of operation by means of piston reciprocation from working balls impact on it.EFFECT: technical result is simplification of cylinder manufacturing.12 cl, 5 dwg
FIELD: machine building.SUBSTANCE: cylinder is intended for working member moving from one position to another. Cylinder contains housing, including cylinder, front cover, having through holes for working balls inlet-outlet, rear cover, having through hole for piston rod output. In cover wall annular grooves are located, filled with balls. Two flanges, piston, which is working element. On its outer surface piston has annular grooves filled with balls.EFFECT: technical result is production cost-cutting.8 cl, 2 dwg
FIELD: machine building.SUBSTANCE: group of inventions relate to machine building, in particular, to rail vehicle air drying devices. Air drying device for rail vehicle includes first and second dry air reservoirs, air supply from compressor to air drying device and outlet hole. Air drying device includes regeneration line, through which air can be directed to air supply during dry air reservoirs bypassing. Compressed air supply unit for rail vehicle contains air drying device. Railway vehicle comprises compressed air supply unit and/or air drying device.EFFECT: enabling increasing air drying efficiency.17 cl, 2 dwg
FIELD: machine building.SUBSTANCE: invention relates to hydraulic drives of tilting a platform and driving a wheel turn of heavy haulers. Hydraulic drive of a vehicle tilting mechanism comprises hydraulic cylinders for lifting and lowering the platform connected with pumps and an oil tank via an on/off control valve controlled by an electromagnetic hydraulic control valve with an electric control system. Control system comprises a sensor of the platform position with a controlled switch binding the platform lowering electromagnet with the switch of the vehicle electric drive control via diodes and relays. Through normally closed relay contacts the platform lifting electromagnet is introduced. Relay coil is connected to the platform lowering electromagnet. Parallel to the electromagnet an electric capacity is connected. In the electric control system of the electromagnetic hydraulic control valve in series with the normally closed relay contact there is the second button to switch on the platform lifting electromagnet. One of the button contacts is connected to potential output of the electromagnet winding.EFFECT: provided is higher safety of the vehicle movement.1 cl, 2 dwg
FIELD: control systems.SUBSTANCE: invention relates to hydraulic control system containing combined closed-loop hydraulic circuit for control of two or more hydraulic drives and a hydraulic energy accumulation system containing one or two accumulators.EFFECT: simplification of control system.24 cl, 4 dwg
FIELD: machine building.SUBSTANCE: method is intended for production processes automation, particularly in automatic manipulators, as well as in other automatic devices with pneumatic cylinder. Method includes pneumatic cylinder piston braking by creation of air exhaust on output throttle adjustable by adaptive law. Exhaust control adaptive law is creating according to scheme with identifier and specified implicit reference model using ”simplified adaptability conditions” and two-phase structure. Control circuit assumes availability of information sensors on piston displacement and air pressure in pneumatic cylinder exhaust cavity and, optionally, microcontroller generation of control signals. Adjustable exhaust throttle can have any operation principle, providing adequate change in resistance to bleed air motion according to control signals.EFFECT: smooth braking with specified parameters of pneumatic cylinder piston at end of its travel.1 cl, 2 dwg
FIELD: machine building.SUBSTANCE: invention relates to machine building, in particular, to static load simulation testbed systems, acting on hydraulic drive output link. Disclosed is hydraulic drive output link pneumatic loading system, consisting of pneumatic cylinder, which piston is connected to rod of tested hydraulic drive. Required pressure in one of loading pneumatic cylinder cavities is created from compressed gas source by means of pressure regulator and throttle. System supports constant pressure difference between pneumatic cylinder cavity and drainage. This enables loading consistency at hydraulic drive output link in static and dynamic.EFFECT: technical result consists in improvement of reliability of drive output link pneumatic loading system operation.1 cl, 1 dwg
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
FIELD: machine building.SUBSTANCE: disclosed is a multimode steering valve with electric control. Steering valve comprises: a valve for collection and distribution of flows, the first electromagnetic exchange valve and the second electromagnetic exchange valve. Valve body comprises four groups of doubled hydraulic valve ports. First hydraulic ports of the first electromagnetic exchange valve and the second electromagnetic exchange valve are connected with the first group of hydraulic valve ports of the valve body, respectively. Second hydraulic ports of the first electromagnetic exchange valve and the second electromagnetic exchange valve are connected with the second group of hydraulic valve ports of the valve body, respectively. Third hydraulic port of the first electromagnetic exchange valve is connected with the port of collecting the valve flows for collection and distribution of the flows. First port of the valve flow distribution for collection and distribution of the flows and the third hydraulic port of the second electromagnetic exchange valve are connected with the third group of hydraulic valve ports of the valve body, respectively. Second port of the valve flow distribution for collection and distribution of the flows and the third hydraulic port of the second electromagnetic exchange valve are connected with the fourth group of hydraulic valve ports of the valve body, respectively. Additionally disclosed are a hydraulic steering system and a wheel-type valve.EFFECT: steering valve can perform multimode steering of mechanical vehicles, show reliable operation and have low cost.10 cl, 10 dwg
FIELD: hydrodynamics.SUBSTANCE: invention relates to hydrodynamics. Element is intended for pipelines communication. Element comprises a flexure made in the form of a shaping insert, the surface profile of which on the side of the fluid medium completely coincides with the envelope of the vortex formation zone with the flow edge line. Flexures made in the form of shaping inserts can be installed in standard, typical or individually engineered branches, transitions, tees, crosspieces and other connecting shaped elements of pipelines.EFFECT: technical result is reduction of pressure losses.5 cl, 9 dwg
FIELD: electronics.SUBSTANCE: system has multiple units of solenoid valves made as a manifold, where each unit of electromagnetic valves is controled by control signals, herewith multiple units of solenoid valves are divided into multiple groups, wherein the system additionally includes a control unit for direct control of the electromagnetic valves within the multiple units of electromagnetic valves in each of the multiple groups regardless of the control signals, and if the control signals are fed to inputs of the units of solenoid valves the control unit switches over the units of electromagnetic valves between the serviceable state able to control these units of solenoid valves and the non-serviceable state, when actuation of the units of solenoid valves is impossible.EFFECT: technical result is improved safety.13 cl, 7 dwg
FIELD: electrical engineering.SUBSTANCE: energy-recovery generation system for electric loader comprises hoisting cylinder (9). Output pipeline of hoisting cylinder (9) is provided with pressure sensor unit (1) and directional valve (2). Directional valve (2) is under control of pressure sensor unit (1). First outlet of directional valve (2) is connected to tank (5) through a way of multi-way valve (4) with an operating handle. Pressure oil, flowing out from a second outlet of directional valve (2), passes through pump (7) having an oil suction port capable of bearing pressure or a motor, and then passes through multi-way valve (4), to finally flow back to tank (5). In engine mode, pump (7) having an oil suction port capable of bearing pressure, drives electric motor (16) to output electric energy. Electric energy output end of electric motor (16) is connected to energy storage device (20) through converter (21).EFFECT: invention ensures energy saving.10 cl, 6 dwg
FIELD: aircraft engineering.SUBSTANCE: invention relates to aerodynamics of supersonic and transonic aircrafts. Method of supersonic flow braking consists in creation of compression shock waves, moving relative to streamlined surface in direction of flow, with speed values smaller than difference of flow speeds and sound speed in front of compression shock waves values. Compression shock waves movement is performed by creation of transverse waves travelling in flow direction in flow at streamlined surface. Transverse travelling waves are created by means of transversal progressive deformations of streamlined surface outline or by periodic, alternating air suction and blow-out from streamlined surface sections with suction and blow-out phases shift between adjacent sections of streamlined surface.EFFECT: invention is aimed at reducing of total pressure losses.3 cl, 4 dwg
FIELD: machine building.SUBSTANCE: interface system is intended for controlling working machine. Working machine comprises engine and pump package. System comprises a power mode selector configured to manually select a mode between at least high power mode and low power mode, engine speed selector configured to manually select a throttle state from a number of throttle states corresponding to multiple engine speed arrangements available in the high power mode and with multiple engine speed arrangements available in the low power mode and unit of controllers. Unit of controllers is configured to receive the selected mode of power and selected throttle state and determine the engine power limit for operation of pump package depending on the selected mode of power and selected throttle state.EFFECT: simplified control system of working machine.17 cl, 6 dwg
FIELD: engines and pumps.SUBSTANCE: invention relates to positive-displacement hydraulic engines designed for conversion of working fluid flow energy into mechanical energy of the output link moving reciprocally. In hydraulic cylinder, which includes housing with lug, consisting of front with replaceable guiding bushing and rear covers equipped with seals and their fasteners on housing, and rod with piston with seals and lug, inner surface of housing lugs and rod made in circumferential direction, has blunt angle α with top lying on hydraulic cylinder longitudinal axis, directed towards its center of gravity, and equal α=180°-2(arctg kAH), where kAH is support elements in lug maximum adhesion factor.EFFECT: higher reliability of hydraulic cylinder.1 cl, 4 dwg
FIELD: physics.SUBSTANCE: invention relates to automation and can be used for conversion of an optical signal into a jet one. Optojet converter contains a bistable jet element with a supply channel, with the first and the second outlet channels, with the first control channel, which is connected to the first outlet channel, and an opposite second control channel having a chamber with a blackened element and an inlet to supply a light pulse signal directed to the blackened element. Chamber with the blackened element is connected through a limiting throttle with the supply channel and is a flow-type one.EFFECT: technical result is enabling direct cooling of the control chamber with the blackened element by the jet flow, which provides higher efficiency of the converter.1 cl, 3 dwg
FIELD: engines.SUBSTANCE: system is intended for predicting the state of the drive. Drive system includes a piston-cylinder structure, which includes a piston, which is movable relative to cylinder. First flow channel is in fluid communication with the said piston-cylinder structure, and the second flow channel is in fluid communication with the said piston-cylinder unit. Control system can provide fluid communication of the said first flow channel with the high pressure fluid source and fluid communication of the said second flow channel with the drain line for piston movement in the first direction. Pressure sensor in fluid communication with the first flow channel and is configured to measure the corresponding pressure data during piston movement to generate a pressure vs. time curve. Said control system is configured to compare the generated pressure vs. time curve with the known standard pressure vs. time curve stored in the said control system to determine the state of piston-cylinder unit.EFFECT: technical result: improved reliability of the drive system.17 cl, 17 dwg
FIELD: hydraulic systems.SUBSTANCE: invention relates to a hydraulic system with at least two main control valves and with a hydraulic pilot control system for controlling the main control valves. Wherein the hydraulic pilot system and/or the main control valves are constructed so that the at least two main control valves open sequentially, wherein the at least two main control valves include different valve rods and/or the valve housing, which lead to an opening of the at least two main control valves with different strokes.EFFECT: higher reliability.14 cl, 5 dwg
FIELD: test equipment.SUBSTANCE: method is intended for testing of bellow expansion joints and relates to hydraulic tests of articles. Method consists in the fact that a hermetically sealed expansion bellow joint with auxiliary fittings on its upper and lower flanges is installed coaxially in a load frame with identical to paired bellows element. Reinforced end flanges of bellows rigidly fastened by tension rods may be used as bearing frame. Reversible hydraulic pump is connected to the lower power fittings. System is filled with fluid, and working pressure is created. Movement of contacting flanges is due to occurrence of differential pressure obtained by pumping the fluid out of one bellows element and its delivery to the other.EFFECT: technical result is possibility of testing of expansion bellows of large diameters.1 cl, 2 dwg
FIELD: hydro automatics.SUBSTANCE: invention relates to hydro automatics, particularly to electro-hydraulic amplifiers, and can be used in high-precision control systems of working mechanisms of movable vehicles and aircrafts. Electromechanical converter is made in the form of a stepper motor with discrete nature of movement and digital control, mechanism for returning a four-clamp cylindrical slide valve in neutral position comprises a preliminarily compressed centering springs located in the end cavities of the four-clamp cylindrical slide valve.EFFECT: obtaining a digital control and reduced impact effect of reverse jets in the hydraulic amplifier due to a stepper motor with finite number of stable positions.1 cl, 1 dwg
FIELD: engines and pumps.SUBSTANCE: hydraulic system is intended for movement of working elements from one position to another. Hydraulic system comprises hydraulic fluid, which is contained and stored in reservoir for fluid medium, at least one electric hydraulic pump connected with reservoir for fluid delivery and suction, hydraulic fluid discharge, at least one mechanical hydraulic pump connected with reservoir for fluid delivery and suction, hydraulic fluid discharge, at least two check valves sequence each of which is connected to electric hydraulic pump and mechanical hydraulic pump, each of check valves sequence is normally open in first direction and prevents return of fluid in second direction, and double pressure valve, which is connected with tank for fluid and each of the check valves sequence for switching direction of hydraulic fluid output.EFFECT: prevention of sudden switching of movement of working members direction.11 cl, 2 dwg
FIELD: engines.SUBSTANCE: invention relates to liquid-propellant engines. Rocket engine fuel supply system, comprising fuel supply circuit (4), additionally comprises a device for varying volume of gas in circuit (4), configured to vary volume of gas in circuit during operation of rocket engine. Also disclosed is a method for eliminating the POGO effect by varying at least one hydraulic resonant frequency (50) by varying rate at which gas is injected into circuit (4), a vehicle and a computer-readable data medium.EFFECT: invention provides suppression of process of entering into resonance of liquid fuel in fuel supply circuit in rocket engine.21 cl, 14 dwg
FIELD: engines and pumps.SUBSTANCE: invention can be used in internal combustion engines, equipped with motor brakes-decelerators. Control cylinder (12) of motor brake-decelerator is intended for creation of deceleration by throttling flow of exhaust gases on vehicle engine turbo-supercharger outlet side. Control cylinder (12) has cylindrical housing (13) with piston (14) with piston rod (15). Piston (14) divides housings (13) to spring chamber (16) with spring (17) for piston rod (15) and pressure chamber (18) for generation of compressed air by means of force actuation by means of piston (14). Piston (14) is designed with possibility to interact with elastic recovery devices. Piston rod (15) can displace in lengthwise direction relative to piston (14). Devices for generation of elastic recovery contain pneumatic spring located inside cylindrical housing (13), which is made with possibility of action, on one side, on piston rod (15) and, on the other side, on piston (14).EFFECT: technical result consists in reduction of number of parts and in reduction of dimensions.6 cl, 9 dwg
FIELD: hydrodynamics.SUBSTANCE: group of inventions relates to aero- and hydrodynamics of streamlined bodies. Method of controlling a streamlined body configuration includes shaping the streamlined body as the profile curvature by activation of connected therewith drive on the basis of an alloy with shape memory effect. Streamlined body comprises the first layer of laminar composite material and the second layer of laminar composite material, between which the drive is glued on the basis of an alloy with shape memory effect. System of the streamlined body with variable profile curvature comprises a streamlined body able to receive the first and the second profile curvature and a drive based on the alloy with shape memory effect configured to shape the streamlined body as the first profile curvature in response to achievement of the first response temperature and to shape the streamlined body as the second profile curvature in response to achievement of the second response temperature. Streamlined body comprises the first layer of laminar composite material and the second layer of laminar composite material, between which the drive is glued on the basis of an alloy with shape memory effect. Method of controlling the streamlined body with variable profile curvature system configuration is characterised by using the system.EFFECT: group of inventions is aimed at the stalling speed change.16 cl, 12 dwg
FIELD: engines.SUBSTANCE: hydraulic cylinder relates to displacement hydraulic motors designed for working fluid flow energy conversion into mechanical energy output link moving reciprocally. Hydraulic cylinder comprises body with fasteners consisting of front and rear end covers, equipped with seals and fasteners on body, hollow rod with fasteners and, mounted thereto, a hollow piston with seals, body is made in form of two hollow cylinders, coaxially inserted into each other to form a circular cavity in between and interconnected by front and rear hollow end covers, hollow rod with hollow piston is inserted into hollow annular space between cylinders of body, front cover is detachable, consisting of two end washers, end surface of hollow piston on side of rear end cover is made in form of stepped tooth crowns, fluid feed hole in piston cavity is directed at radially located tooth surface, and its longitudinal axis is tangent to axis of annular cavity.EFFECT: technical result is high reliability of hydraulic cylinder.1 cl, 3 dwg
FIELD: transport.SUBSTANCE: method for operating handling vehicle includes activating handling vehicle and performing warm up cycle. During warm up cycle, energy is provided to at least one valve in handling vehicle so as to energize valve without providing working fluid to valve. Providing energy to at least one valve effects heating of oil located within at least one valve.EFFECT: technical result - increase of vehicle hydraulic system durability.37 cl, 8 dwg
FIELD: pumps.SUBSTANCE: invention relates to a method pump flow deviation in pumping system. Working vehicle comprises a container for fluid medium; the first and the second pump with constant flow rate, wherein the flows of both pumps are parallel to each other; actuator; distributing valve with an open centre arranged by the fluid medium between the group of pumps and actuator; electro-hydraulic diverter connected by fluid with the point between the second pump and distribution valve and reservoir for fluid medium; working vehicle speed transducer. Operator input device provides manual selection of adjustment of deviation of position of the vehicle seat. Controller receives speed signal or deviation adjustment. It determines whether speed parameter satisfies preset criterion or determines the state of the selected deviation adjustment. Then it generates commands for deflector to open if speed parameter satisfies preset criterion or if selected deviation adjustment is in the state of flow deflection.EFFECT: higher operating efficiency.19 cl, 6 dwg
FIELD: treatment plants.SUBSTANCE: invention relates to a mixing device for water treatment plants with an open channel. Device comprises base (2) in form of a plate or strip to be attached to channel wall so that during operation lower surface (6) of said main part faces channel wall, and upper surface (5) faces away from channel wall. Device also comprises multiple protrusions (3) extending from base (2) from lower surface (6) and extending over plane formed by upper surface (5), and a plurality of corresponding recesses (4) located between two protrusions (3).EFFECT: invention enables to optimise radiation acting on jet flow along edge in systems with rows of ultraviolet emitters shifted relative to each other.11 cl, 3 dwg
FIELD: engines.SUBSTANCE: hydraulic cylinder relates to displacement hydraulic motors designed for working fluid flow energy conversion into mechanical energy output link moving reciprocally. In hydraulic cylinder comprises piston with rod arranged in the housing to make working cavities, end covers, multiple-row rolling bearing piston and rod. Rolling elements of rolling contact bearings of the piston and Rod are made in the form of disc washers connected round closed arc axis and arranged in grooves arranged along the whole perimeter of the piston and hydraulic cylinder rod.EFFECT: technical result is an increase of reliability and operability assurance for hydraulic cylinder.1 cl, 3 dwg
SUBSTANCE: hydraulic cylinder is intended for use in power engineering, metallurgy, construction and mining industries. Hydraulic cylinder comprises piston, cylinder, where on working cylindrical surface of piston, made from structural steel, there are circular rollers with width 6-12 mm made from high-hardness wear-resistant friction martensite, spaced apart through a distance larger than width of rollers by 1.2-1.5 times, having in cross section, in middle part, support cylindrical surfaces and inclined sides, arranged on both sides of support surfaces. Exit of piston from cylinder is performed through a cover, in which there is a drain hole and a cup-type seal, on other side hydraulic cylinder adjoins a body, having two inlet branch pipes with diameter equal to half diameter of hydraulic cylinder, hydraulic cylinder working surface is tempered with HFC.
EFFECT: technical result is longer service life of piston of hydraulic cylinder, enabling operation thereof at speeds higher than 2÷3 m/s, reduced friction losses.
1 cl, 3 dwg
SUBSTANCE: amplifier is designed for follower electrohydraulic drives of aircraft control systems. Amplifier comprises an electromechanical converter with two control coils, upper and lower magnetic conductors, T-shaped anchor with a base, central core and flat spring feedback, housing of jet amplifier with a built-in jet amplifier, as well as a housing of a slide control valve with a four-edge throttling valve of a second stage, wherein lower magnetic conductor is provided with screws made from nonmagnetic material for limiting travel of a T-shaped anchor, upper magnetic conductor is provided with screws made from ferromagnetic material for fine adjustment of moment characteristic of electromechanical converter, jet amplifier is made in form of, arranged between two flat discs, a feed plate with a through central slot for a deflector and three wedge-like holes, one of them connected by wide part through said through slot in lower disc to channel head, has at outlet in central slot a rectangular stabilising section forming a pressure nozzle, two other connected by wide part through corresponding through channels in lower disc and channels in body of slide control valve with end cavities of slide valve of second stage, located opposite first hole to form narrow parts at outlet in central slot receiving windows, separated by a trapezoidal wall, size flat tops of which does not exceed size of pressure nozzle, value of gaps between rod and ends of central groove, as well as dimensions of each of receiving windows exceed sizes of pressure nozzles. T-shaped rod armature in area of feed plate has a wedge-shaped hole, wide part of which faces nozzle, a narrow - to receiving windows, forming a deflector.
EFFECT: high accuracy of adjustment.
8 cl, 4 dwg
FIELD: machine building.
SUBSTANCE: invention relates to machine building and can be used in high-precision high-speed tracking, guidance drives. In drive adjustable axial-piston pump is made with piston cam plate and hydrostatic supports, in cylinder block of which pistons are installed with spherical heads, in each of which there is an axial hole of a throttle and additional channels extending to working part of spherical head, on which is oppositely installed a hydrostatic support with a central intake chamber connected by additional holes with annular discharge chamber, surrounded by sealing belts extending to drain chamber, hydrostatic support end interacts with a thrust disc, and on working part of spherical piston head there is an annular groove, which joins additional channels of piston head, thus forming on spherical piston head a belt to create positive covering with intake chamber of hydrostatic support.
EFFECT: technical result is higher accuracy of guidance.
1 cl, 3 dwg
FIELD: machine building.
SUBSTANCE: invention relates to device (10) of actuator for generation of linear displacement, including hydraulic actuator (12), which comprises first piston element (14) for actuation of actuating element and second piston element (18) for generation of linear movement, with which is associated corresponding hydraulically connected working chamber (16, 20), volume of which may vary due to movement of corresponding piston (14, 18), wherein is a piezoelectric actuator (36) to apply force to first piston element (14). Corresponding working chambers (16, 20) are connected through two counterrotating oriented check valves (24, 28) having different unlocking force.
EFFECT: technical result is high accuracy of linear displacements.
7 cl, 4 dwg
SUBSTANCE: header, seal joint and method for formation of collector are intended for railway vehicle braking system. Collector contains first section and second section of header, and each has inner surface on it and multiple holes and channels extending through it, and seal joint manifold to create sealing interaction between first and second section of collector. Sealing joint header is installed with possibility of removal inside slot provided on surface of one or both sections of collector. Sealing joint collector comprises holding body having hole extending through it, wherein two sealing elements are located in corresponding channels provided on opposite surfaces of holding body in axial direction of ring-shaped holes.
EFFECT: technical result is simplification of design and easier servicing.
13 cl, 9 dwg
FIELD: engines and pumps.
SUBSTANCE: invention relates to water supply. Pump station comprises pumping device (1), hydraulic accumulator (2), representing a steel tank with a rubber membrane, automation unit (5), comprising device (6) for control and protection of pump, and stabiliser (7) of water pressure, interconnected by pipelines (8). In hydraulic accumulator (2) there is a rigid partition, separating 1/2÷1/5 volume, in which there is a second membrane, connected via pipeline (8) with stabiliser (7) of pressure.
EFFECT: higher reliability and quality of water supply, creation of stable pressure in water supply network, as well as reduced load on pump.
1 cl, 1 dwg
FIELD: machine building.SUBSTANCE: invention relates to hydraulic machinery. Hydraulic servo vibrator consists of hydraulic cylinder 1 of double action, trilinear two-position distributing spool and sleeve 2 with positive or zero overlapping windows in neutral intermediate position of slide valve, servo trilinear spool and sleeve 3 with positive or zero overlapping of windows in neutral intermediate position slide valve. Rod cavity 4 has constant hydraulic connection with pressure line 5. Piston cavity 6 has hydraulic connection 7 with working input pair 2. Distributing spool and sleeve 2 has different diameters of ends. Small area of end 8 is hydraulically connected 9 with line 5, and larger end 10 has a hydraulic connection 11 with right end 12 of spool and sleeve 3. Pair 3 has constant hydraulic connection 13 of left end 14 of spool and sleeve 3 with cavity 6. End 12 has hydraulic connection 15 with working channel of slide valve 3. Spool and sleeve 3 has constant kinematic connection 16 with piston 17 with provision of independent displacement relative to each other of spool and sleeve 3 and piston 17 at specified interval.EFFECT: invention is aimed at ensuring constant amplitude of oscillations and higher efficiency.1 cl, 1 dwg
FIELD: machine building.SUBSTANCE: invention relates to hydraulic machinery and can be used in various industries, for example, in construction, in mining, as well as to testing structures at dynamic effects. Hydraulic vibrator comprises hydraulic cylinder 1 having piston 2 with rod 3 and unit 4 for controlling hydraulic cylinder 1, second hydraulic cylinder 5 having piston 6 with rod 7 and unit 8 for controlling hydraulic cylinder 5. Axis of symmetry of one hydraulic cylinder rod is a continuation of axis of symmetry of rod of other hydraulic cylinder. Amplitude of vibrations of second piston 6 is less than amplitude of vibrations of first piston 2.EFFECT: invention is aimed at expansion of functional capabilities by enabling application on working end of rod of additional vibrations.5 cl, 4 dwg
FIELD: engines and pumps.SUBSTANCE: invention relates to positive-displacement hydraulic engines designed for conversion of working fluid flow energy into mechanical energy of the output link moving reciprocally. Proposed device can be used in design of multifunctional hydraulically-driven machines. Technical result is achieved by the fact that in the hydraulic system containing a power and auxiliary cylinders, safety valve and pressure valve, piston- and rod cavity of the power cylinder are connected, via a distributor, to a power supply and drainage, an auxiliary cylinder, the rod of which is kinematically connected to the body of the power cylinder, has one cavity which is connected to the output of the safety valve communicating, via the input, with the power cylinder piston cavity, and connected to the input the pressure valve, the hydraulic control cavity of which is interconnected with the rod cavity of the power cylinder, while the pressure valve connects the cavity of the auxiliary cylinder with the piston cavity of the power cylinder.EFFECT: higher reliability, simplified design of hydraulic system and reduction of material consumption.1 cl, 2 dwg
FIELD: test equipment.SUBSTANCE: first valve element has axis and first surface of the seat with converging circuit facing axially downstream. Second valve element has second surface of the seat with converging circuit facing axially upstream. Second valve element has closed position, in which the second surface of seat rests against the first surface of seat, and has open position, in which the second surface of seat is spaced axially downstream from the seat first surface. Second valve element also has terminal end section made in the form of nose cone. Nose cone can be located completely downstream from the seat second surface and can have cavity with drain hole.EFFECT: invention is intended for testing pipes.20 cl, 12 dwg
FIELD: machine building.SUBSTANCE: bypass device comprises an actuator movable in a first direction and a second direction, a volume booster in fluid communication with actuator, volume booster having a supply channel, an exhaust channel, and a volume booster output bypass connection in fluid communication with supply channel, and a bypass valve in fluid communication with volume booster output bypass connection.EFFECT: connection at outlet of volume booster makes it possible to fix volume booster directly on actuator.20 cl, 8 dwg