229results about How to "High output pressure" patented technology

Multiple electrode element capacitive micromachined ultrasonic transducer (“cMUT”) devices and fabrication methods are provided. A cMUT device generally comprises a top electrode disposed within a membrane, a bottom electrode disposed on a substrate, and a cavity between the membrane and the bottom electrode. In a preferred embodiment of the present invention, at least one of the first electrode and the second electrode comprises a plurality of electrode elements. The electrode elements can be positioned and energized to shape the membrane and efficiently transmit and receive ultrasonic energy, such as ultrasonic waves. Other embodiments are also claimed and described.

An energy-saving control system for hydraulic elevator features use of a hydraulic pressure changer composed of variable or quantitative pump and motor. Said pressure changer can get energy from constant-pressure network and provide it to load without pressure loss, or reverse the energy from load. Its avdantages are high dynamic response speed and pressure amplifying effect.

The invention relates to a piezoelectric hydraulic linear motor which pertains to the field of mechanical-electrical-hydraulic integration. An inlet of a piezoelectric pump is connected with an accumulator by a pipeline; the accumulator is also connected with a reversing valve by the pipeline; the reversing valve is connected with an outlet of the piezoelectric pump by the pipeline; the reversing valve is also connected with a cavity body of a hydraulic cylinder. The piezoelectric hydraulic linear motor has the advantages of novel structure, being capable of effectively converting the micro-amplitude reciprocating vibration of piezoelectric ceramic to the micro liner motion of a piston of the hydraulic cylinder by utilizing fluid media to transmit power, obtaining relatively large driving power and motion displacement and realizing precise driving and control by a method of accumulating a liquid drop for one time; meanwhile, the piezoelectric hydraulic motor has simple structure and control, small volume and good sealing property and can be applied to marking parts.

The invention relates to a piezoelectric stack pump, which belongs to a piezoelectric driver. A stack support body is permanently connected with a supporting block. A group of belleville springs are sheathed on a plunger. Two fixing nuts are connected with the plunger though thread. Piezoelectric stacks are arranged on the fixing nuts. A lower cover permanently connects a valve base and a metallic seal diaphragm with the supporting block. The plunger is permanently bonded with the metallic seal diaphragm. An intake one-way valve is permanently connected with the valve base. A water outlet one-way valve is permanently connected with the valve base. The metallic seal diaphragm and the valve base form a working chamber. A cushion chamber is formed between the lower cover and the valve base. The lower cover is provided with an intake and a water outlet, and is connected with the cushion chamber. The cone angles of the intake and the water outlet are 30 degrees to 40 degrees. The invention is a novel piezoelectric stack pump with simple structure, large flow, high output pressure, simple process, stable performance and high precision.

The piston pump to utilize alternate magnetic field to produce linear motion includes casing, cylinder inside the casing, piston inside the cylinder to fit the cylinder axially and airtightly, electromagnetic coil around the cylinder and connected to vibrating power source, and permanent magnet connected to the outside of the cylinder. The piston has one end connected to the casing and the other end inside the inner hole of the cylinder and is provided with fluid hole. There are the first non-return valve and the second non-return valve set in the fluid hole or inner cylinder cavity to constitute three independent cavities, including low pressure cavity communicated with the inflow pipe, variable volume work cavity and high pressure cavity communicated with the outflow pipe. The present invention has the advantages of simple structure, low power consumption, low noise, etc. and may be used in pumping oil, water and other medium and in compressor.

The invention relates to the technical field of pressure equipment tests, and aims at providing a high-pressure and large-flow fatigue test system of pressure equipment. The system comprises a low-pressure liquid supply device, a pressure lifting device, a gas drive device and a measurement control system; wherein, the low-pressure liquid supply device comprises a water tank, a filter, a low pressure pump driven by a motor and a high-precision filter which are communicated through a low-pressure pipeline. The system has the advantages of being particularly applicable to fatigue tests of large-volume high-pressure equipment, having high output pressure and large flow, being capable of determining a fatigue life within a short period of time; having a large output pressure range and stable pressure, being widely applicable to the fatigue tests of low-pressure, medium-pressure and high-pressure vessels; being capable of freely adjusting pressurization rate according to volume and test requirements of a tested vessel; having relative lower noise, lower cost, convenient operation and the like.

A piezoelectric micromachined ultrasound transducer (PMUT) is disclosed. The PMUT consists of a flexural membrane that is piezoelectrically actuated. These membranes are formed on a first substrate that is bonded to a second substrate. The two substrates are separated by an air gap to allow the PMUT to vibrate. Several methods for joining the two substrates are described.

The invention relates to a special axial flow pump, in particular to a heart auxiliary device of an axial magnetic force unloading type axial flow pump in the field of biomedical engineering. The heart auxiliary device is implanted into the human body. The auxiliary device is a pump-machine combination body and is composed of a pump system and a motor system. The heart auxiliary device is characterized in that an impeller position control soft magnet is installed at the rear end of a stator core, when an impeller moves forwards or backwards due to external force in a pump cylinder, the impeller position control soft magnet and the stator core generate magnetic constraining force on a permanent magnet rotor in an impeller hub, and the direction of force is opposite to the axial moving direction of the impeller. When the axial flow pump works, the magnetic constraining force can form partial and even whole axial magnetic force unloading on axial force loads of the impeller and a shaft, and axial magnetic levitation of the impeller is achieved. According to the heart auxiliary device of the axial magnetic force unloading device, mechanical abrasion and the friction heat effect can be reduced, the thrombus in the pump is prevented from being formed, complications are reduced, the service life of the axial flow pump is prolonged, and stability of continuous work is improved.

The invention discloses a multifunctional gas-liquid pipeline dredging device with a pump and deformation plugging, comprising a pump working cavity and the deformation plugging, wherein the pump working cavity is communicated with a unidirectional suction pipeline through a suction inlet and is communicated with a unidirectional discharge pipeline through a discharge outlet and the deformation plugging is arranged on the unidirectional discharge pipeline. Water or air is sucked into the pump working cavity via the unidirectional suction pipeline through doing work by human power or motive power so as to obtain pressure and flux and is discharged to a sealing and plugging pipe cavity comprising the deformation plugging, plugged pipe walls, stemming and the unidirectional discharge pipeline via the unidirectional discharge pipeline; and then the stemming is discharged to the pipeline under the action of hydraulic pressure or air pressure. The multifunctional gas-liquid pipeline dredging device can be connected with multifunctional accessories so as to have the functions of liquid pumping, air pumping, aeration, water spraying and mopping and various washing head functions.

The invention relates to a two-stage jet nozzles series super-magnetostrictive jet servo valve and an operating method thereof, which belong to the field of a hydraulic servo control technique. The two-stage jet nozzles series super-magnetostrictive jet servo valve provided by the invention comprises an upper end cover (4), a lower end cover (26), a super-magnetostrictive rod (14), an output rod (21), a coil skeleton (8), a polarization magnetic filed generating unit and a driving magnetic field generating unit, wherein the upper end cover (26) is provided with a left valve core installation cavity (45) and a right valve core installation cavity (46) which are symmetrical relative to the axis of the output rod; a group of valve core components are respectively installed in the left valve core installation cavity (45) and the right valve core installation cavity (46); and wedge-shaped amplification mechanisms are formed in the contact positions of the output rod (21) and the left and the right valve core installation cavities. The two-stage jet nozzles series super-magnetostrictive jet servo valve provided by the invention has the advantages of great pressure gain and rapid response, and the driving part has the obvious characteristics of small heat radiation, adjustable polarization magnetic filed, intelligentized effect and the like.

Provided is a three-way clamping device, comprising a cylinder. The cylinder is a double-piston cylinder. A cylinder piston is internally provided with a floating block. The floating block is internally provided with two sliding holes. The two sliding holes are each connected with a lever mechanism, wherein one lever mechanism is connected with a compressing rod, and the other lever mechanism is connected with an inclined wedge. The slope of the inclined wedge is connected with a compressing guide rod. The compressing rod and the compressing guide rod respectively move along a guide sleeve. The compressing guide rod is provided with a reset spring. The device uses a single cylinder and realizes three-way clamping on a workpiece. The device is compact in structure and reliable in clamping, and manufacturing cost is reduced, and the device is simple and practical.

The invention discloses an inside engaged gear pump with a static pressure supporting device. The inside engaged gear pump comprises a pump body, an external gear and an internal gear, which are arranged closely to one side of the pump body and are meshed, and a swing link between the external gear and the internal gear; and the swing link divides a non-meshing area between the external gear and the internal gear into an oil absorption area and an oil pressing area. The inside engaged gear pump is characterized in that a static pressure supporting device is arranged on an external side of the internal gear and corresponding to the oil pressing area in the pump body; the static pressure supporting device comprises a supporting plate fixed in the pump body and for supporting the internal gear; the supporting plate is provided with an arc surface cooperating with an outer circumference of the internal gear; the arc surface is provided with at least one groove corresponding to the oil pressing area; and the groove communicates with the oil pressing area through a plurality of small holes on the internal gear. According to the invention, the static pressure supporting device is used to bear radial unbalanced force from the internal gear, reduce the friction between the periphery of the internal gear and the support thereof, and further reduce the heat and wear of the two, and thereby improving output pressure and mechanical efficiency of the gear pump and prolonging service life.

The invention relates to a bidirectional diffusion centrifugal fan which comprises a volute assembly, an impeller assembly, an inlet air collector, a spindle nose stop device, a motor, a shock pad and a junction box device, wherein the impeller assembly is of a long-short blade combined structure, an outlet is of a bidirectional diffusion structure; the bidirectional diffusion centrifugal fan is used for reducing the annular flowing loss and airflow separation and improving the lifting capacity of an output pressure of impellers. The rapid diffusion of a high-speed airflow at the outlet of a blade is effectively reduced, the speed of the airflow at the outlet is stably reduced, and further the outlet pressure is increased and the formation of irregular eddy currents is reduced; a volute tongue of a volute is of an inclined volute tongue structure, so that the overlapping of noise fundamental frequencies can be reduced, the rotation noise is diffused, and the low-noise requirement can be kept. Meanwhile, the shock pad on an installing frame of the volute assembly plays roles in reducing vibration and isolating vibration. The measures ensures the main characteristics of low noise, small vibration, compact integral structure and stable performance of the bidirectional diffusion centrifugal fan, and thus the requirement of comfort degree of passengers in a motor train unit can be met.

The invention relates to a plunger pump driven by piezoelectric chip vibrators and belongs to the field of fluid driving control. A pump cover installed at the end of a cavity and a piston installed inside the cavity from a pump cavity body; piezoelectric vibrator bodies are installed on a connection block fixed to the end of a piston rod, and the two ends of each piezoelectric vibrator body are fixed to a left wall plate and a right wall plate; the vibrator bodies are each of a straight structure before being installed and are each of a bent structure after being installed; pressure stress is applied to piezoelectric chips; the parts, on the left side and the right side of the connection block, of the piezoelectric vibrator bodies form a first driving unit and a second driving unit, and the driving voltage phase difference of the two driving units is 180 degrees; and when the elongation amount of the piezoelectric vibrator bodies reaches the maximum in one driving unit, the shortening amount of the piezoelectric vibrator bodies reaches the maximum in the other driving unit, and the shortening amount and the elongation amount are restricted with each other. The plunger pump driven by the piezoelectric chip vibrators has the characteristics and advantages that a telescopic piezoelectric actuator is formed through the installation method, the manufacturing method and process are simple and low in cost; only the pressure stress is applied to the piezoelectric chips, the deformation of the first driving unit and the deformation of the second driving unit are restricted with each other, and the reliability is high; and the flow and pressure of the pump are easy to improve by increasing the number and the length of the piezoelectric vibrators.

The present invention discloses a double-oilchannel vane pump or motor, the left and the right end covers of which are respectively provided with two oil inlets and two oil outlets, and two oilchannels are utilized to control the operation of the vanes of the double-oilchannel vane pump or motor. Since the double-oilchannel structure is adopted, not only the vane pump of the present invention have the advantages of simple structure, small output oil pressure pulsation, etc., but also feedback pressure oil provides counter pressure for the vanes, so that the output pressure of the pump is effectively increased. Moreover, by changing the shape of the curved surface of a rear oil-exhausting area in a working cavity, the vane pump has the function of outputting multiple types of working pressure oils. The vane motor of the present invention, which has the advantages of uniformly stressed oil pressure and small output torque pulsation, is applicable to not only high-speed and small-torque conditions but also low-speed and large-torque conditions, meanwhile, since the pressure oil is utilized to replace the prior springs to provide counter pressure, the structure is simplified, and the operation of the double-oilchannel vane pump or motor becomes more reliable and stable.

The invention relates to a seawater / freshwater axial plunger hydraulic pump that is belonged to positive displacement type pump. It decreases the attrition of working in seawater / freshwater medium and decreases the request to the attrition of the material. Plunger holes are equally set on the cylinder body. And the plunger and the plunger hole are sliding matched. The input shaft is installed on the carcass of the pump by supporting bearing. The end surface crankshaft is formed on the input shaft, and the sloping cam plate is installed at the crank of the end surface crankshaft by supporting bearing. The direction guiding location slider is installed outside the sloping cam plate that sliding matched to the direction guiding slide groove. The sloping cam plate is actively connected to the plunger. The universal ball pivot at one end is installed on the reference circle and the ball pivot at the other end is connected to plunger. The pump is tightly structure, light weight, stable capability, and large flux. It could be used as drive component of liquid transferring using seawater / freshwater and other low viscosity liquid or liquid driving system.

An air compressor that employs splash lubrication to lubricate and cool a piston kit that includes a cylinder and a piston reciprocating in the cylinder. In one form, cooling channels can be coupled to or formed on the cylinder to direct the lubricant that is splashed onto the cylinder to drain in a desired manner, such as helically around the exterior of the cylinder, to more effectively cool the piston kit. In another form, the cylinder can include an annular flange that can be bigger in diameter than a remainder of the cylinder. The annular flange can be received into a counterbore in a cylinder block. A cylinder head, which can be fastened to the cylinder block, can apply a clamping force to the annular flange to clamp or fix the cylinder to cylinder.

The present invention relates to a capacitive micro-machined ultrasound transducer (CMUT) device (1) for transmitting and / or receiving ultrasound waves, comprising at least one CMUT cell (10). The CMUT cell (10) comprises a substrate (13) comprising a first electrode (22), a membrane (15) comprising a second electrode (20), at least one dielectric layer (21, 23) between the first electrode (22) and the second electrode (20), and a cavity (18) formed between the substrate (13) and the membrane (15). The CMUT device (1) further comprises an operating bias voltage source (25) for supplying an operating bias voltage (VB) of a first polarity between the first and second electrode (20, 22) during transmitting and / or receiving ultrasound waves, and a charging voltage source (30) for supplying an additional charging voltage (VC) between the first and second electrode (20, 22), the second polarity being the reverse polarity of the first polarity. The present invention further relates to a method of operating such a CMUT device.

A connection structure is applied to a serial fan assembly, which includes an upstream fan and a downstream fan. The upstream fan and the downstream fan have different sizes. The connection structure connects the upstream fan and the downstream fan so that the upstream fan and the downstream fan are arranged in series. The connection structure has a housing, a base and a plurality of ribs for connecting the base, and the housing is formed with an air guiding passage and a chamber. The upstream fan or the downstream fan is accommodated in the chamber or the air guiding passage is located between the upstream fan and the downstream fan.

The invention relates to snoring detection control equipment and a detection control method thereof. A snoring detection device detects snoring of a patient; a snoring signal is obtained and is transmitted to a control device; snoring data are obtained by the control device according to the snoring signal, a control signal is outputted to a breathing machine when an amplitude of the snoring signal is greater than a preset threshold value, and outputting pressure is increased by a fan under the control of the breathing machine; a data storing device is used for storing snoring data which serve as one of evaluation references of a treatment effect of the patient; and a snoring detection result of the patient serves as a control amount of the breathing machine, snoring of the patient is detected in real time, magnitude of the outputting pressure of the fan of the breathing machine is controlled according to the amplitude of the snoring signal, outputting of the breathing machine is suitable for conditions of the patient, and the treatment effect of the breathing machine is improved.

The invention discloses a high-pressure water jet flow system for removing rust of ships and a working method thereof. The system of the invention comprises a low-pressure water pipeline, a super-high pressure water pipeline, a cooling pipeline and a pneumatic pipeline, wherein the super-high pressure water pipeline comprises a lubricating oil cooler of a super-high pressure pump, a cooling pressure gauge, an super-high pressure motor and the super-high pressure pump; one end of the lubricating oil cooler of the super-high pressure pump is also connected with the super-high pressure pump through the cooling pressure gauge; the other end is connected the super-high pressure pump sequentially through a cooling temperature relay, a cooling filter, a lubricating oil cooling pump and a cooling pressure relay; and a rust removing nozzle is installed at the output end of the super-high pressure pump. The method comprises the steps of sucking stable water flow to be converted into super-high pressure water and jetting the super-high pressure water out through the rust removing nozzle. In the invention, because the high pressure water with the pressure up to 250 MPa, which is generated by the super-high pressure pump, is directly used to be passed through a spray nozzle and the high-speed water flow with extreme high level density is jetted out, the rust removing effect is good and delivering abrasive materials is not needed.

The present invention relates to a method of manufacturing a capacitive micro-machined transducer (100), in particular a CMUT, the method comprising depositing a first electrode layer (10) on a substrate (1), depositing a first dielectric film (20) on the first electrode layer (10), depositing a sacrificial layer (30) on the first dielectric film (20), the sacrificial layer (30) being removable for forming a cavity (35) of the transducer, depositing a second dielectric film (40) on the sacrificial layer (30), and depositing a second electrode layer (50) on the second dielectric film (40), wherein the first dielectric film (20) and / or the second dielectric film (40) comprises a first layer comprising an oxide, a second layer comprising a high-k material, and a third layer comprising an oxide, and wherein the depositing steps are performed by Atomic Layer Deposition. The present invention further relates to a capacitive micro-machined transducer (100), in particular a CMUT, manufactured by such method.

The invention discloses a waterproof charging type amphibious high-pressure cleaning machine. The machine comprises a shell; a motor pump unit and a rechargeable battery, wherein the motor pump unit comprises a motor and a mini-pump, wherein the motor comprises a motor shaft, a rotor and a stator iron core arranged in a motor shell, the rotor is arranged on the motor shaft, and the stator iron core is positioned outside the rotor; the mini-pump is provided with a pump water inlet and a high-pressure water outlet which are formed in a pump shell; the motor shell is provided with a sealing cavity I and an inner shell, the rotor and the stator iron core are arranged in the sealing cavity I, and the stator iron core clings to the inner shell to form a heat conduction channel; the motor shell is provided with at least one cooling channel I, a water inlet I and a water outlet I; the water inlet I is connected with an external water source, and the water outlet I communicates with the pump water inlet; and the sealing waterproof grade of the shell is not lower than IPX7. The waterproof charging type amphibious high-pressure cleaning machine has the beneficial effects that the waterproof grade can reach above IPX7, the machine is safer and more reliable, the working pressure of the whole machine reaches 2.5MPa, and higher cleaning capacity is achieved.

In an automatic transmission control device, multiple electromagnetic valves control fluid pressure of working fluid to be applied to multiple friction elements of an automatic transmission device, so that a transmission gear is changed by engaging some of the friction gears and / or disengaging the other of the friction elements. The electromagnetic valve controls its output pressure in such a manner that the output pressure is temporally increased when starting the transmission gear change. A maximum fluid pressure is selected from the output pressures of the multiple electromagnetic valves and is applied to a pressure control valve, which controls a fluid control pressure applied to a capacity varying device for changing a discharge amount of a pump. As a result, the fluid pressure applied to the friction elements can be rapidly increased at proper timings.

The invention discloses a gas pressure boost metering device and particularly relates to a supercritical fluid pressure-boost generating and accurate metering device. The device consists of a filter, four stop valves, three solenoid valves, a pressure regulating valve, three pressure gauges, a gas booster pump, an exhaust valve, a safety valve, three pressure sensors, two supercritical fluid storage tanks, a pilot valve, an electronic pressure controller, a pneumatic control pressure regulating valve, a proportional valve, a bypass valve, an overflow valve, a control unit, a touch screen operation interface, and a pressure pipeline and a communication electric wire or cable which are connected with the components. The device has the advantages that generation and metering are integrated, and the booster pump is driven by gas and is automatically controlled to be switched on and off in a proportion-integration-differentiation (PID) mode; a metering system operates in a bypass backflow mode, and backflow gas is pressurized and recycled; and the fluid in the metering system always flows in a circulating mode, so that pressure jump caused by passage blocking is eliminated.

The invention relates to a nitrogen making system for a ship. The nitrogen making system comprises a compressor, a nitrogen making machine and / or a nitrogen buffer tank as well as a flow pressure regulating device which are sequentially connected through pipelines, wherein the compressor comprises at least one compression unit and is used for providing compressed air; the nitrogen making machine comprises at least two nitrogen making units and is used for making nitrogen; the nitrogen buffer tank is used for storing and buffering the nitrogen; the flow pressure regulating device is used for regulating flow and pressure. Compared with a conventional nitrogen making system, the nitrogen making system is not equipped with an air dryer, an air buffer tank or a nitrogen buffer tank and can output the small-flow and high-pressure nitrogen, and the pressure of the nitrogen is higher than the highest output pressure of an air compressor. With the adoption of the means, the structure of the nitrogen making system in the prior art is simplified, device operation and nitrogen yield cannot be influenced, and device investment and energy are saved.

The invention provides a high-pressure seawater hydraulic pump for a double-cone opposite-cone threaded rod, belonging to a volume type hydraulic pump. A core part of the high-pressure seawater hydraulic pump is a pair of cone-shaped threaded rods and a layer of bushing block with equal thickness. The two cone-shaped threaded rods with the same structure and size and the different rotating directions are symmetrically arranged at two sides of a universal coupling, and small ends of the two cone-shaped threaded rods are respectively connected with two ends of the universal coupling, so that a double-cone opposite structure is formed, and the thickness of each position on the same cross section of the bushing block is equal to one another; and a liquid passageway is formed on the cone-shaped threaded rod which is nearest to a discharge end and forms into an integrated seal chamber, and the passageway is communicated with a seal chamber and a discharge-end chamber. After the double-cone opposite structure is adopted, the whole structure of a screw pump is balanced in force application, so that the defects such as eccentric wear, leakage and the like caused by the unbalanced force application can be removed; and static pressure support is formed between the threaded rods and the bushing block, so that the threaded rod has the function of the static pressure support, therefore, the wear between the threaded rods and the bushing block can be reduced, the moving stability of the hydraulic pump can be improved, and the hydraulic pump is small in noise, long in service life, high in output pressure, stable in output flow, and small in pressure pulsation.

Systems and methods for providing increased CMUT imaging performance are disclosed. The system can comprise CMUT electronics with integrated or derived gap feedback. In this manner, the response of the CMUT membrane can be linearized to improve pressure output and / or harmonic distortion. The system can comprise a CMUT with series resistance to improve linearity. The system can also comprise a CMUT with series induction-resistance for improved linearity at reduced voltages. A method for linearizing CMUT response is also disclosed. The method can comprise providing a signal to the CMUT that is inversely proportional the gap between the CMUT membrane and the substrate on which the CMUT is fabricated.

The invention relates to the field of gas compression, fluid transportation and vacuum-pumping, in particular to a double-cylinder translational rotary compressor. The double-cylinder translational rotary compressor comprises a cylinder body, a crankshaft and two translational pistons, wherein an inner chamber of the cylinder body is divided into a left chamber and a right chamber the middle parts of which are communicated with each other; the crankshaft is provided with two eccentric structures which run through the left chamber and the right chamber; the two translational pistons are movably connected with the two eccentric structures of the crankshaft respectively; outer side faces of the two translational pistons are tangent with inner side faces of the left chamber and the right chamber respectively, so as to form a left crescent-shaped working chamber and a right crescent-shaped working chamber; sliding plates are hinged to insides of the left chamber and the right chamber respectively; sliding plate grooves are arranged on the two translational pistons respectively; two sliding plates are extended into the sliding plate grooves respectively, and divide the left working chamber and the right working chamber into an expansion chamber and a compression chamber respectively; and feed openings and discharge openings are arranged on the expansion chamber and the compression chamber respectively. The double-cylinder translational rotary compressor has the advantages of obviously improving the volumetric efficiency, improving the mechanical reliability and the mechanical efficiency, and reducing the friction loss.