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30results about How to "Simple pressure control" patented technology
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Active hydraulic damper and hydraulic actuator
ActiveCN101392809ASave packing spaceReduce weightSpringsLiquid based dampersHydraulic cylinderActuator
The invention relates to an active hydraulic damper specially for railway vehicles, comprising a hydraulic cylinder, an electric motor, a hydraulic accumulator, at least a pump and at least a control valve. According to the invention, all components of the active hydraulic damper are arranged at the hydraulic cylinder.
Owner:利勃海尔运输系统股份有限公司
Control method for pressure cooker and pressure cooker
ActiveCN107616684AIncrease temperatureReasonably control the temperature and increase the heating power of the pressure cookerBoiling over preventionPressure-cookersWorking pressureEngineering
The invention provides a control method for a pressure cooker and the pressure cooker. The control method for the pressure cooker comprises the following steps: detecting temperature in the pressure cooker, and controlling heating power of the pressure cooker in accordance with temperature, which is detected out, in the pressure cooker and a set temperature range, so that the pressure cooker workswithin a preset pressure range which corresponds to the set temperature range; and controlling the pressure cooker to work under a rated working pressure. According to the technical scheme, the heating power of the pressure cooker can be controlled in accordance with a relation between the detected temperature in the pressure cooker and the set temperature range before or after the pressure cooker is heated to the rated working pressure, so that the pressure cooker can work within the preset pressure range corresponding to the set temperature range, namely the pressure cooker can work both under the rated working pressure and within the preset pressure range; therefore, in an actual cooking process, multi-stage pressure cooking can be conducted on foods in accordance with the properties of the foods, so that the cooking effect and taste of the foods are guaranteed, and subsequently, user experience is enhanced.
Owner:FOSHAN SHUNDE MIDEA ELECTRICAL HEATING APPLIANCES MFG CO LTD
Hydraulic buffer system
ActiveCN102102728ASimple pressure controlLow failure rateSpringsLiquid based dampersFuel tankElectromagnetic valve
The invention relates to a hydraulic buffer system, which comprises a hydraulic cylinder, an oil storage tank, a first one-way valve, a second one-way valve, a third one-way valve, a forth one-way valve, a first hydraulic damper, a second hydraulic damper, a first electromagnetic valve and a second electromagnetic valve, wherein the hydraulic cylinder comprises a cylinder sleeve, a piston and a piston rod; the piston slides in the cylinder sleeve; and the hydraulic cylinder is divided into a buffer cavity and a locking cavity through the piston. The system has an ingenious design, a simple and compact structure, low production cost and a good buffering effect and is convenient to maintain when used on a vehicle; an oil discharge circuit is provided with a constant-value hydraulic damper, so that a resistance buffering effect which is proportional to the corner velocity of the vehicle is achieved; and the on-off of an oil circuit of the locking cavity is controlled through the electromagnetic valves, so that the vehicle has the functions of locking corner surpassing and recovering direct movement at the same time.
Owner:JOINTECH (SUZHOU) VEHICLE SYST CO LTD
Variable winding starter generator for automobile
ActiveCN104242580AMany turnsHigh back EMFSynchronous generatorsSynchronous motorsStarter generatorEngineering
The invention provides a variable winding starter generator for an automobile. The variable winding starter generator for the automobile comprises a rotor core, a stator core, coils, a shaft, a shell and the like, and is characterized in that each stator electrode is provided with a centralized coil with (m) turns and a centralized coil with (n) turns; when the variable winding starter generator for the automobile serves as a starter, all the coils on the stator electrodes with the same phase are serially connected to one another by selector switches to form a phase armature winding; after each phase armature winding is connected with an asymmetrical half-bridge converter with diodes, the phase armature winding can electrically run in a switch reluctance machine mode; and when the variable winding starter generator for the automobile serves as a generator, the coils with the (n) turns on all the stator electrodes are serially connected to one another to form an exciting winding, the coils with the (m) turns on the stator electrodes with the same phase are serially connected to one another or connected to one another in parallel to form a phase armature winding, and the starter generator generates power and runs in an electro-magnetic doubly salient generator mode. By the variable winding starter generator, the advantage of high efficiency of a switch reluctance machine and the advantage of easiness in voltage adjustment and control of an electro-magnetic doubly salient generator can be effectively utilized.
Owner:SHANDONG UNIV OF TECH
Pressurizing and locking hydraulic buffer system
ActiveCN102116332ASimple pressure controlNo oil spillsFluid-pressure actuatorsFailure rateHydraulic cylinder
The invention relates to a pressurizing and locking hydraulic buffer system, belonging to the field of hydraulic buffer. The system comprises a hydraulic cylinder and an oil storage tank, wherein the hydraulic cylinder comprises a cylinder sleeve, a piston and a piston rod; the hydraulic cylinder is divided into a first chamber and a second chamber by the piston; a first oil extraction oil line and a first oil absorption oil line are communicated by virtue of the first chamber and the oil storage tank; the pressurizing and locking hydraulic buffer system also comprises at least one overflow valve, at least one electromagnetic valve and at least one hydraulic damp; and the overflow valve and the electromagnetic valve are connected in parallel in the first oil extraction oil line and a second oil extraction oil line. The supercharging and locking hydraulic buffer system provided by the invention has the advantages of skillful design, simple and compact structure, low failure rate and good buffer effect; through setting the constant hydraulic damp, the resistance force buffer effect is achieved in proportion to the cornering speed of a vehicle; and as the overflow valve is arranged, the vehicle is enabled to be provided with the functions of super angle locking and safe protection.
Owner:JOINTECH (SUZHOU) VEHICLE SYST CO LTD
Improved sublimation purification method
InactiveCN1535749AImprove heat transfer efficiencyFast heat transferSublimationPurification methodsHeat transfer efficiency
The present invention relates to an improved sublimation purification method. It utilizes a preset pressure, temp. and time to compress the powdered material to be purified into compact granules or ingot-like material firstly, because the compressed material to be purified is compacter than powdered material, so that unit volume can receive still more material to be purified, and can make the heat transfer efficiency of compressed material to be purified be raised, make the heating power be more stable, and in the sublimatiojn purification process a flowable inert gas can be added, and the inert gas can be used for carrying the sublimed purified material to make the purified material be flowed toward same direction and be deposited.
Owner:WINTEK CORP
Elastic membrane, substrate holding device, and polishing apparatus
Provided is an elastic membrane, precisely adjusting a polishing profile with respect to an edge portion of a substrate. The elastic membrane comprises: a contact unit (11) allowing the elastic membrane (10) used for a polishing head (1) to come in contact with a wafer (W); a circular side wall (15) installed on the end portion of an outer circumfernece of the contact unit (11) in a standing state; a first partition wall (14f) linearly extending from the side wall (15) inward in the diameter direction when viewed from a cross-section; a second partition wall (14e) linearly extending upward from the end portion of the outer circumfernece of the contact unit (11) to the insdie of the diameter direction when veiwed from the cross-section; and an edge press chamber (16f) pressing the edge of the wafer (W) by the first parition wall (14f), the second partition wall (14e), and the side wall (15).
Owner:EBARA CORP
Constant pressure damping control and buffering system
ActiveCN102444687ANo stuckNo electrical system failureSpringsShock absorbersHydraulic cylinderTurn angle
The invention relates to a constant pressure damping control and buffering system, which belongs to the technical field of hydraulic buffering, and includes a first hydraulic cylinder and a second hydraulic cylinder, as well as a first one-way valve, a second one-way valve, a first one-way overflow valve, a second one-way overflow valve and a pressure regulating valve, wherein a second hydraulic cylinder rodless cavity, a first hydraulic cylinder rod chamber, a first one-way valve, the pressure regulating valve, the first one-way overflow valve, a second hydraulic cylinder rod chamber and a first hydraulic cylinder rodless cavity are sequentially connected in series to form a first oil circuit; and the first hydraulic cylinder rodless cavity, the second hydraulic cylinder rod chamber, the second one-way valve, the pressure regulating valve, the second one-way overflow valve, the first hydraulic cylinder rod chamber and the second hydraulic cylinder rodless cavity are sequentially connected in series through a pipeline to form a second oil circuit. The constant pressure damping control and buffering system has unique design, low manufacturing cost, convenience for maintenance, excellent buffering effect, and the functions of locking and safety protection in case that the turning angle of vehicle is too big.
Owner:JOINTECH (SUZHOU) VEHICLE SYST CO LTD
Hot chamber caster for aluminum alloy
The invention provides a hot chamber caster for an aluminum alloy in which the casting speed is high and the problem of melting damage to the internal mechanism does not occur even when molten aluminum alloy is used. A molten metal injection main cylinder part (120) made of ceramic is provided in a melting furnace (110). A valve body (150) is provided in the molten metal injection main cylinder part (120) at a position lower than that of an injection path (130). Application and removal of gas pressure of a predetermined pressure in an internal space (123) in the molten metal injection main cylinder part (120) is controlled by a pressurizing unit (160). When the pressurizing unit (160) applies the gas pressure, the valve body (150) moves in a closing direction, and the molten metal in the molten metal injection main cylinder part (120) is die-cast from the injection path (130) into a die (200). When the pressurizing unit (160) removes the gas pressure, the valve body (150) moves in an opening direction, and the amount of molten metal necessary for the next die-casting is fed into the internal space (123).
Owner:EGUCHI DIE CAST
Wide-voltage isolation type DC-DC converter with automatic current limiting function
ActiveCN111030466AGive full play to the function of frequency conversion and voltage regulationEasy to controlEfficient power electronics conversionDc-dc conversionCapacitanceHemt circuits
The invention discloses a wide-voltage isolation type DC-DC converter with an automatic current limiting function. The wide-voltage isolation type DC-DC converter comprises two half-bridge circuits, two groups of LLC resonant cavities, two groups of voltage clamping diode pairs, two isolation transformers with the same transformation ratio and a three-phase bridge circuit, wherein the two half-bridge circuits are respectively connected with respective input end power supplies, a primary side of each of the isolation transformers is respectively connected with one end of a corresponding LLC resonant cavity resonant inductor and a neutral point of a half-bridge circuit, another end of the resonant inductor is connected with center points of two split resonant capacitors, and voltage clampingdiodes are connected with the split resonant capacitors in parallel; secondary sides of the isolation transformers are connected in series in a reversed polarity manner, and three nodes of a transformer set are respectively connected to neutral points of the three-phase bridge circuit after series connection; the advantages of LLC frequency conversion voltage regulation are utilized, series connection and parallel connection rapid switching is achieved in combination with PWM pulse 180-degree phase shift, the rapid adjustment of rated voltage and double rated voltage output is achieved, and the advantages of being small in switching loss, high in efficiency and simple in structure are achieved.
Owner:NANJING INST OF TECH
Composite-drive two-stage projectile acceleration device and experimental platform
ActiveCN113091532AReduce volumePrecise and controllable projectile speedAmmunition testingFriction-wheel launchersPhysicsPiston
The invention provides a composite-drive two-stage projectile acceleration device and an experimental platform. The acceleration device comprises a first-stage accelerator and a second-stage accelerator, wherein the first-stage accelerator comprises an electromagnetic valve connected with a high-pressure gas source, the electromagnetic valve is connected with the head end of a shell, a piston is arranged in the shell, manual valves are connected to the shell, the piston is reset by opening the lower manual valve and the upper manual valve, the second-stage accelerator comprises a second-stage accelerator frame, an acceleration pipeline, at least one sliding rail fixed to the second-stage accelerator frame and at least one motor set, the electromagnetic valve controls release of high-pressure gas and pushes the piston to accelerate, the piston pushes a projectile-shaped object to conduct first-stage acceleration to enter the acceleration pipeline of the second-stage accelerator, a motor drives a flywheel to rotate, and second-stage acceleration is conducted on the projectile-shaped object through friction. According to the device, the high-pressure gas and the motor are used as source power, the projectile-shaped body is accelerated by means of a two-stage acceleration mechanism and jetted into a water tank from the acceleration pipeline at a high speed, and a high-speed camera is arranged outside the water tank to record the test process.
Owner:HARBIN ENG UNIV
Pressure control drilling assisting device
PendingCN109630048ASmall footprintReduce installation and maintenance costsFlushingEnergy lossSlurry pump
The invention belongs to the technical field of petroleum and natural gas drilling pressure control equipment, and particularly relates to a pressure control drilling assisting device. The device comprises a three-way valve connected to an outlet pipeline of a slurry pump, and the other two outlets of the three-way valve are connected with an inlet pipeline and an auxiliary pipeline respectively;the other end of the inlet pipeline is connected with a drill pipe, and the other end of the auxiliary pipeline is connected with an annulus. Compared with the prior art, the device has the followingadvantages that single pipes can be connected, a drill can be put down and a rotary head is maintained under the condition that the pump is not stopped; the constant pressure at the well bottom can bemaintained under the condition that a return pressure pump is not used, the occupied space is reduced, the device can be used for working occasions with limited working space, the installation and maintenance cost is reduced, the complexity degree of a system is reduced, and maintenance is facilitated; the large pump and the return pressure pump can be prevented from being started and stopped frequently, and the energy loss can be reduced; the assisting device can be used for land or ocean control pressure drilling, and simple, safe and reliable well bottom pressure control is realized.
Owner:SOUTHWEST PETROLEUM UNIV
Pressure-jetting real-time controlled differential oil path system in die casting machine
The invention relates to die casting machines, injection molding machines, forging presses and the like, particularly belongs to the technical field of the die casting machines, and particularly discloses a pressure-jetting real-time controlled differential oil path system in a die casting machine. The pressure-jetting real-time controlled differential oil path system in the die casting machine isapplicable to a real-time controlled differential oil path, and comprises a pressure-jetting cylinder and pipelines for controlling oil to enter or be discharged out of the pressure-jetting cylinder,wherein the pipelines comprise the first pipeline connected to one side of the pressure-jetting cylinder for oil feeding, the third pipeline connected with the other side of the pressure-jetting cylinder for oil discharging, and the fourth pipeline arranged between the portion, with the third pipeline, of the pressure-jetting cylinder and the first pipeline and used for forming the differential oil path. The two sides of the pressure-jetting cylinder communicate in a one-way flowing mode, so that the pressure-jetting cylinder is prevented from generating high pressure or pressure impact in the working process, and the effect of enhancing stability is achieved.
Owner:NINGBO HAITIAN METAL MOLDING EQUIP CO LTD
A variable winding starter generator for automobiles
ActiveCN104242580BMany turnsHigh back EMFSynchronous generatorsSynchronous motorsStarter generatorStator coil
The present invention proposes a variable winding starter generator, which includes rotor core, stator core, coil, shaft and casing, etc., and is characterized in that each stator pole has a centralized coil with one m-turn and one n-turn; when the When the variable-winding starter-generator used for automobiles is used as a starter, the switch connects all the coils on the stator poles with the same phase in series to form a phase armature winding, and each phase armature winding is connected to an asymmetrical half-bridge with a body diode After the converter, it can run electrically in the switched reluctance motor mode; when the automobile variable winding starter generator is used as a generator, the n-turn coils on all stator poles are connected in series to form an excitation winding, and the stator poles with the same phase The m-turn coils on the upper part are connected in series or in parallel to form a phase armature winding, and the starter generator operates in the mode of electric excitation double salient pole generator to generate electricity. The starter generator of the invention can effectively utilize the advantage of relatively high efficiency of the switched reluctance motor, and also effectively utilize the advantages of simple voltage regulation and control of the electrically excited double salient pole generator.
Owner:SHANDONG UNIV OF TECH
LLC and DAB hybrid bidirectional DC-DC converter
ActiveCN111064370AGive full play to the function of frequency conversion and voltage regulationEasy to controlEfficient power electronics conversionDc-dc conversionCapacitanceFrequency conversion
The invention discloses an LLC and DAB hybrid bidirectional DC-DC converter. The converter comprises an H-bridge circuit, two LLC resonant cavities, two isolation transformers with the same transformation ratio and a three-phase half-bridge full-control circuit. The two ends of the H-bridge circuit and two serially connected split resonant capacitors are connected with two ends of an input end power supply, primary dotted terminals of the isolation transformers are connected with one ends of resonant inductors of the resonant cavities, the other ends of the resonant inductors are connected with the neutral points of the half-bridges of the H-bridge circuit, secondary dotted terminals of the isolation transformers are connected with the neutral points of the bridge arms of the three-phase half-bridge full-control circuit, and the non-dotted terminals of the secondary sides of the two isolation transformers are connected with the neutral points of the bridge arms in the three-phase half-bridge full-control circuit. The advantages of LLC frequency conversion voltage regulation and DAB phase shift voltage regulation are utilized and combined with PWM pulse 180-degree phase shift to achieve LLC and DAB rapid switching, efficiency optimization control under different load rates or voltage gains is achieved, and the advantages of small switching loss, high efficiency and simple structure are achieved.
Owner:NANJING INST OF TECH
A bi-directional dc-dc converter mixed with llc and dab
ActiveCN111064370BGive full play to the function of frequency conversion and voltage regulationEasy to controlEfficient power electronics conversionDc-dc conversionCapacitanceHemt circuits
Owner:NANJING INST OF TECH
A compound-driven secondary projectile acceleration device and experimental platform
ActiveCN113091532BReduce volumeRealize continuous operationAmmunition testingFriction-wheel launchersMotor driveSolenoid valve
The invention provides a compound-driven two-stage projectile accelerating device and an experimental platform. The accelerating device includes a primary accelerator and a secondary accelerator. The primary accelerator includes a solenoid valve connected to a high-pressure gas source, and the head end of the solenoid valve and the shell Connection, a piston is built in the casing, and a manual valve is connected to the casing, and the piston is reset by opening the lower manual valve and the upper manual valve; the secondary accelerator includes a secondary accelerator frame, an acceleration pipeline, and at least one The slide rail and at least one set of electric motors, the solenoid valve controls the release of high-pressure gas, and pushes the piston to accelerate. The piston pushes the projectile for a primary acceleration and enters the acceleration pipeline of the secondary accelerator. The motor drives the flywheel to rotate through friction to form a secondary accelerate. The invention uses high-pressure gas and electric motor as the source power, accelerates the elastic body through a two-stage acceleration mechanism, injects it into the water tank at high speed from the acceleration pipeline, and sets a high-speed camera outside the water tank to record the test process.
Owner:HARBIN ENG UNIV
Hydraulic buffer system for rotary dampers
ActiveCN103195855BSimple pressure controlNo oil spillsSpringsLiquid based dampersClockwiseHydraulic seal
Disclosed is a rotary damper type hydraulic buffer system, comprising a rotary damper, a first oil path and a second oil path, wherein the rotary damper comprises a stator, a rotor and a hydraulic chamber formed between the stator and the rotor; a first oil duct and a second oil duct are formed on the stator, and the hydraulic chamber comprises a first chamber and a second chamber which are respectively in communication with the first oil duct and the second oil duct; when the rotor rotates anticlockwise, a hydraulic oil in the first chamber is compressed, so as to enter the second chamber via the first oil duct, the first oil path and the second oil duct from the first chamber; and when the rotor rotates clockwise, the hydraulic oil in the second chamber is compressed, so as to enter the first chamber via the second oil duct, the second oil path and the first oil duct from the second chamber. The rotary damper type hydraulic buffer system of the present invention has a high level of integration and a good buffer effect; and two seals of an oil suction valve with an end surface and an axial plane ensure that the phenomenon of leakage will not occur.
Owner:JOINTECH (SUZHOU) VEHICLE SYST CO LTD
A Wide-Voltage Isolated DC-DC Converter with Automatic Current Limiting Function
ActiveCN111030466BGive full play to the function of frequency conversion and voltage regulationEasy to controlEfficient power electronics conversionDc-dc conversionCapacitanceHemt circuits
The invention discloses a wide-voltage isolated DC-DC converter with an automatic current limiting function, which includes two half-bridge circuits, two sets of LLC resonant cavities, two sets of voltage clamping diode pairs, and two synchronous conversion ratio Isolation transformer and three-phase bridge circuit; Among them, the two half-bridge circuits are connected to their respective input power supplies, the primary side of the isolation transformer is respectively connected to one end of the resonant inductor of the corresponding LLC resonant cavity and the neutral point of the half-bridge circuit, and the other end of the resonant inductor is connected to 2 The center point of a split resonant capacitor, the voltage clamping diode is connected in parallel with the split resonant capacitor; the secondary side of the isolation transformer is connected in series with reverse polarity, and the three nodes of the transformer group are respectively connected to the neutral point of the three-phase bridge circuit after series connection; The invention utilizes the advantages of LLC frequency conversion and voltage regulation, combined with PWM pulse 180º phase shift to realize fast switching between series and parallel, realizes fast adjustment of rated voltage and 2 times rated voltage output, and has the advantages of small switching loss, high efficiency and simple structure.
Owner:NANJING INST OF TECH
Method for producing aromatic polycarbonate
The invention provides a preparing method of aromatic polycarbonate. According to the invention, aromatic polycarbonate is prepared via reaction between aromatic dyhydroxy compound and carbonic acid diaryl ester. The method comprises following steps of (A) supplying the carbonic acid diaryl ester of 90 DEG C-220 DEG C to a mixing groove, wherein the supply quantity of the carbonic acid diaryl ester is 75m%-99m% of total supply quantity of the carbonic acid diaryl ester solved via target molar ratio of the aromatic dyhydroxy compound and the carbonic acid diaryl ester; (B) after the step A, supplying the aromatic dyhydroxy compound to the mixing groove whose liquid temperature is adjusted to 135 DEG C-220 DEG C; and (C) after the step (B), further supplying the carbonic acid diaryl ester to the mixing groove so as to allow the molar ratio of the aromatic dyhydroxy compound and the carbonic acid diaryl ester to be in a regulated range, thereby preparing dissolution mixture.
Owner:ASAHI KASEI KK
Variable damping control and buffering system
ActiveCN102444686BSimple pressure controlNo oil spillsSpringsShock absorbersHydraulic cylinderControl theory
The invention relates to a variable damping control and buffering system, which belongs to the technical field of hydraulic buffering, and includes a first hydraulic cylinder and a second hydraulic cylinder, as well as a base pressure regulating valve, a first pressure regulating valve, a second pressure regulating valve, a first one-way valve, a second one-way valve, a first one-way overflow valve and a second one-way overflow valve, wherein a second hydraulic cylinder rodless cavity, a first hydraulic cylinder rod chamber, the first pressure regulating valve, the first one-way valve, the base pressure regulating valve, the first one-way overflow valve, a second hydraulic cylinder rod chamber, a first hydraulic cylinder rodless cavity are sequentially connected in series to form a first oil circuit; and the first hydraulic cylinder rodless cavity, the second hydraulic cylinder rod chamber, the second pressure regulating valve, the second one-way valve, the base pressure regulating valve, the second one-way overflow valve, the first hydraulic cylinder rod chamber and the second hydraulic cylinder rodless cavity are sequentially connected in series through a pipeline to form a second oil circuit. The variable damping control and buffering system has unique design, convenience for maintenance, capability of damping regulation and control, and the functions of locking and safety protection.
Owner:JOINTECH (SUZHOU) VEHICLE SYST CO LTD
An ultra-wide voltage range isolated llc converter
ActiveCN111030467BEasy to controlImprove efficiencyCharging stationsDc-dc conversionHemt circuitsControl theory
The invention discloses an ultra-wide voltage range isolation type LLC converter, comprising two high-voltage side H bridge circuits, two LLC resonant circuits, two isolating transformers with the same transformation ratio and three-phase bridge circuits; The H-bridge circuit on the high-voltage side is connected to the power supply at the input end, and the primary side of the isolation transformer is connected to the midpoint of the LLC resonant circuit and the H-bridge circuit respectively; the secondary side of the isolation transformer is connected in series in reverse polarity, and the three nodes of the transformer group are connected in series. to the neutral point of the three-phase bridge circuit; the invention utilizes the advantages of LLC frequency conversion and voltage regulation, and combines the 180º phase shift of the PWM pulse to realize fast switching between series and parallel, which can realize the output voltage adjustment in a wide range, and at the same time play the role of the PWM rectifier within a certain safety range. The invention has the advantages of small switching loss, high efficiency, high power density of the power supply and small volume.
Owner:NANJING INST OF TECH
Hydraulic buffer system
ActiveCN102102728BSimple pressure controlNo oil spillsSpringsLiquid based dampersHydraulic cylinderFuel tank
The invention relates to a hydraulic buffer system, which comprises a hydraulic cylinder, an oil storage tank, a first one-way valve, a second one-way valve, a third one-way valve, a forth one-way valve, a first hydraulic damper, a second hydraulic damper, a first electromagnetic valve and a second electromagnetic valve, wherein the hydraulic cylinder comprises a cylinder sleeve, a piston and a piston rod; the piston slides in the cylinder sleeve; and the hydraulic cylinder is divided into a buffer cavity and a locking cavity through the piston. The system has an ingenious design, a simple and compact structure, low production cost and a good buffering effect and is convenient to maintain when used on a vehicle; an oil discharge circuit is provided with a constant-value hydraulic damper, so that a resistance buffering effect which is proportional to the corner velocity of the vehicle is achieved; and the on-off of an oil circuit of the locking cavity is controlled through the electromagnetic valves, so that the vehicle has the functions of locking corner surpassing and recovering direct movement at the same time.
Owner:JOINTECH (SUZHOU) VEHICLE SYST CO LTD
A One-way Pressure Relief Valve Suitable for Pressure Control in Spacecraft Cabin
ActiveCN108458142BReduce weightReduce resource consumptionCheck valvesEqualizing valvesClassical mechanicsPressure control
The invention discloses a one-way pressure release valve suitable for the pressure control in a spacecraft cabin. The one-way pressure release valve suitable for the pressure control in the spacecraftcabin comprises a valve body, a sealing gasket, a piston, a spring, a transition flange, a compression nut and an adjusting nut. When the one-way pressure release valve is initially at a close state,a pressure release point of the valve can be adjusted on a ground stage according to the requirement on the pressure in the returning cabin of a spacecraft. According to the one-way pressure releasevalve suitable for the pressure control in the spacecraft cabin, pressure release and closing are automatically realized through the way that a pressure sensing element senses a pressure difference ofan inner environment and an outer environment of the returning cabin; and the one-way pressure release valve suitable for the pressure control in the spacecraft cabin has closing and heat protectionfunctions, the spacecraft weight is light, resource consumption is less, and the pressure control mode is simple.
Owner:LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
Multi-color air jet loom
ActiveCN111041666AReduce the difference in lengthSimple pressure controlLoomsAir-jet loomEngineering
The invention provides a multi-color air jet loom. The multi-color air jet loom reduces the non-uniformity of pressure loss in a pipeline that connects a main nozzle and a main air tank, and can easily control the air pressures of all main nozzles. The multi-color air jet loom (100) includes weft insertion systems (1, 2), wherein each weft insertion system includes at least one main nozzle; main air tanks (11, 12, 13, 14) provided for the weft insertion systems and connected to the main nozzles via pipes; and main valves (31a-31c, 32a-32c, 33a-33c, 34a-34c) directly connected to the main air tanks (11, 12, 13, 14) and connected to the pipes. At least two of the main air tanks (11, 12, 13, 14) are disposed so as to be stacked in a width direction (D) of the multi-color air jet loom.
Owner:TOYOTA IND CORP
Multicolor Air Jet Loom
ActiveCN111041666BSimple pressure controlInconsistent pressure lossLoomsAir-jet loomPressure control
The present invention provides a multicolor air-jet loom which reduces the variation in pressure loss in the piping connecting the main nozzle and the main air tank, and facilitates air pressure control for each main nozzle. The multicolor air-jet loom (100) is provided with: a plurality of weft insertion systems having at least one main nozzle; a plurality of main air tanks (11, 12, 13, 14), which are provided separately for each weft insertion system, and which are provided via The piping is connected to the main nozzle; and the main valve (31a~31c, 32a~32c, 33a~33c, 34a~34c) is directly connected to the main air tank (11, 12, 13, 14), and is connected to the piping, to The injection timing of the air injected from the main nozzles is adjusted, and at least two main air tanks among the plurality of main air tanks (11, 12, 13, 14) are arranged to overlap in the width direction D of the loom.
Owner:TOYOTA IND CORP
A horizontal side-fired coil structure rapid steam generation system
ActiveCN106338056BImprove securityReduce consumptionBoiler controlSteam boilersCombustion chamberEngineering
Disclosed is a fast steam generation system for a horizontal type side-combustion type coiler structure. The fast steam generation system comprises a water processing system, a heat exchanger, a steam-water separator and a combustion system. The water processing system is a vacuum deaeration water supply system composed of a sodium and magnesium ion exchanger, a steam exhaust condenser, a vacuum deaeration pump and a vertical type vacuum deaeration water tank which is connected with a boiler water feed pump. The heat exchanger comprises a coiler device of a horizontal type structure. The coiler device is formed through series connection of a plurality of layers of sequentially arranged mosquito coil flat coilers and spiral-spring-shaped coilers. The spiral-spring-shaped coilers are tightly abutted in the coiler device so as to form a cylindrical combustor, and a convection heated face is formed on the multiple layers of mosquito coil flat coilers. A heating device of the combustion system is installed on the outermost side of the cylindrical combustor. The heads of the mosquito coil flat coilers are provided with cold water inlets. The tails of the spiral-spring-shaped coilers are provided steam-water mixture outlets. The cold water inlets are connected with the boiler water feed pump. The steam-water mixture outlets are connected with the steam-water separator.
Owner:浙江南方锅炉有限公司
Pressurizing and locking hydraulic buffer system
ActiveCN102116332BSimple pressure controlNo oil spillsFluid-pressure actuatorsFailure rateHydraulic cylinder
The invention relates to a pressurizing and locking hydraulic buffer system, belonging to the field of hydraulic buffer. The system comprises a hydraulic cylinder and an oil storage tank, wherein the hydraulic cylinder comprises a cylinder sleeve, a piston and a piston rod; the hydraulic cylinder is divided into a first chamber and a second chamber by the piston; a first oil extraction oil line and a first oil absorption oil line are communicated by virtue of the first chamber and the oil storage tank; the pressurizing and locking hydraulic buffer system also comprises at least one overflow valve, at least one electromagnetic valve and at least one hydraulic damp; and the overflow valve and the electromagnetic valve are connected in parallel in the first oil extraction oil line and a second oil extraction oil line. The supercharging and locking hydraulic buffer system provided by the invention has the advantages of skillful design, simple and compact structure, low failure rate and good buffer effect; through setting the constant hydraulic damp, the resistance force buffer effect is achieved in proportion to the cornering speed of a vehicle; and as the overflow valve is arranged, the vehicle is enabled to be provided with the functions of super angle locking and safe protection.
Owner:JOINTECH (SUZHOU) VEHICLE SYST CO LTD
Water turbine pole iron-core press-fit method
ActiveCN101702550BSimple pressure controlEasy to operateManufacturing dynamo-electric machinesWater turbineShoulder Blades
The invention relates to a water turbine pole iron-core press-fit method which comprises positioning step, pressurization step, pressure-keeping step and welding step, wherein the welding step is to weld a product tension rod penetrating in the screw hole of the stamped steel of the pole iron-core with end plates on two ends of the pole iron-core; the positioning step is to position the stamped steel of the pole iron-core at the two lower shoulder blades of the pole iron-core; and the pressure-keeping step is to pressurize and keep the pressure of the pole iron-core with a hydraulic device atthe two upper shoulder blades of the pole iron-core and double T-shaped tails. The water turbine pole iron-core press-fit method has the advantage that the process is simple, the control is easy, thehumping of the pole iron-core can be avoid, the advantage--straightness of the pole iron-core can be ensured, and the quality of the pole iron-core of the water turbine can be increased.
Owner:上海电气集团上海电机厂有限公司
A bidirectional dc-dc converter based on AC switch switching
ActiveCN110995011BGive full play to the function of frequency conversion and voltage regulationEasy to controlEfficient power electronics conversionDc-dc conversionCapacitanceConverters
The invention relates to a bidirectional DC-DC converter based on AC switching, and belongs to the technical field of converters. Including the primary side half-bridge circuit, the DC capacitor bridge arm including the neutral point, the secondary side H-bridge circuit, the LLC resonant cavity sharing the split resonant capacitor, the isolation transformer and the AC switch circuit; the primary side half-bridge circuit and the DC capacitor bridge arm are connected Both ends of the power supply at the input end; the primary side of the isolation transformer with the same name is connected to the midpoint of the primary half-bridge circuit, and the primary side of the isolation transformer with the same name is not connected to the midpoint of the DC capacitor bridge arm; the secondary side of the isolation transformer is connected with the same name to correspond to LLC resonance One end of the cavity resonant inductor, the other end of the resonant inductor is connected to the midpoint of the left bridge arm of the H bridge; the non-identical terminal of the isolation transformer is connected to the midpoint of the right bridge arm of the secondary H bridge circuit, and at the same time connected to one end of the AC switch circuit; the secondary H bridge circuit and the two ends of the direct current of the split resonant capacitor string are connected to the two ends of the output direct current. The circuit of the invention has the advantages of small switching loss, high efficiency, simple structure and the like.
Owner:NANJING INST OF TECH
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