26results about How to "Achieve pressure" patented technology

The invention belongs to the technical field of permeability prediction, and particularly relates to a fluid permeability prediction method and system of a dual pore-fracture network. The method comprises the following steps: establishing an intergranular pore flow channel model based on a fluid mechanics model, and calculating to obtain a flow state of an intergranular pore network; establishing a pressure-flow velocity linear equation set of the intergranular pore network according to the flow state, and solving to obtain pressure and flow velocity values at different positions in the intergranular pore network; according to the node flow conservation law in the fracture network, fluid velocity and pressure distribution in the fracture network are obtained; and establishing a coupling linear equation set according to the pressure and flow velocity values at different positions in the intergranular pore network and the fluid velocity and pressure distribution in the fracture network, and solving to obtain flow exchange data in the dual pore-fracture network space. According to the method, the three-dimensional fracture-pore network structure model of the cross-microscopic-mesoscopic-macroscopic scale is established, and the dynamic permeability of the double-scale fractured compact rock can be predicted.

The invention provides a multi-medium plunger pump set which comprises a pump station base, a driving device and a multi-crankshaft plunger pump driven by the driving device are arranged on the pump station base, the multi-crankshaft plunger pump comprises a machine body arranged on the pump station base, a plurality of crankshafts are arranged in the machine body, and the multiple crankshafts are arranged in the machine body. The crankshaft is connected with an output shaft of the driving device, a plurality of pump heads are arranged on the machine body, and the crankshaft drives the corresponding pump heads to pump various working solutions at the same time. According to the embodiment, the pump station capable of pumping different media is formed based on the multi-crankshaft plunger pump, multi-flow and multi-pressure output under the large-flow condition of the different media can be achieved, configuration and control of a fully-mechanized coal mining liquid supply system are simplified, and the transmission efficiency of a hydraulic system is improved.

The utility model relates to a probe card probe pressure impedance test bench which comprises a material placing bench, a position adjusting mechanism, a detection mechanism, a microscope and a rack. The detection mechanism is positioned between the microscope and the material placing table through the rack; the detection mechanism comprises a connecting plate, an ejector pin and a display panel, a through hole is formed in the middle of the connecting plate, and the ejector pin is Z-shaped. The utility model has the advantages that the ejector pin is arranged above the probe card, and the probe card ascends and descends through the position adjusting mechanism, so that the pin pressure values and impedance values of different OD quantities of the probe card can be measured; the Z-shaped structure of the ejector pin and the upper part of the ejector pin are provided with holes, so that the shielding space is reduced, a microscope can conveniently observe the butt joint condition of the ejector pin and the probe head of the probe card from top to bottom, and the pin alignment efficiency and the test accuracy are improved.

The invention discloses a multi-path distribution self-starting fire extinguishing device which comprises a fire extinguishing tank, a shunt, an alarm and a fusible pipeline, the fire extinguishing tank is provided with a liquid outlet, the liquid outlet is connected with a branching device through a main pipeline, one end, close to the branching device, of the main pipeline is communicated with an external air source through a pressurizing pipeline, the pressurizing pipeline is provided with a one-way valve, the branching device is connected with a plurality of branch pipelines extending to an inflammable area, and the branch pipelines are communicated with the main pipeline. The branch pipelines are connected with fusible pipelines located in the corresponding flammable areas. A pressure relief sensor is arranged on the fire extinguishing tank, and the pressure relief sensor is connected with the alarm in a closed loop manner; and the fire extinguishing tank is also provided with an anti-decompression valve and a pressurizing valve. The fire extinguishing device is reasonable in structural design and easy and convenient to operate, fire disasters can be extinguished automatically, rapidly and effectively, the safety and reliability of the agricultural machinery can be improved, and a powerful guarantee is provided for safe operation of the agricultural machinery.

The application discloses a hydrogen production and hydrogenation integrated station control method, which comprises hydrogen production equipment, a hydrogen buffer tank, a first-stage compressor, a first-stage hydrogen storage tank, a second-stage compressor, a second-stage hydrogen storage tank and hydrogenation equipment which are sequentially connected; during hydrogenation, the hydrogen production equipment, the first-stage compressor, the second-stage compressor and the hydrogenation equipment are controlled to work according to the relationship between the pressures of the hydrogen buffer tank, the first-stage hydrogen storage tank, the second-stage hydrogen storage tank and the hydrogenation equipment when the hydrogenation equipment works and the maximum filling pressure allowed for the hydrogenation equipment, the first preset pressure, the second preset pressure, the maximum allowable working pressure of the second-stage hydrogen storage tank, the fourth preset pressure, the minimum inlet air pressure of the first-stage compressor, the maximum allowable working pressure of the first-stage hydrogen storage tank, the third preset pressure, the maximum allowable working pressure of the hydrogen buffer tank and the minimum inlet air pressure of the second-stage compressor. The application realizes on-demand start and stop of hydrogen production, reduces loss, prolongs the service life of equipment, reduces cost and production hidden danger.

The invention discloses a system and a method for realizing touch screen pressure testing based on a 3D modeling mode and a pressure testing machine, and relates to the technical field of touch screen pressure testing, the system comprises a pressure testing machine, a control module, a motor driving module, a display screen module, a camera module, a PC upper computer, a power supply circuit, a first serial interface and a second serial interface, wherein the pressure testing machine is connected with the input end of the control module; the pressure testing machine is connected with the output end of the motor driving module; the output end of the control module is connected with the input end of the motor driving module and the input end of the display screen module. The PC upper computer is connected with the control module through a first serial interface; and the PC upper computer is connected with the camera module through a second serial interface. According to the invention, the sliding path is established in the PC upper computer, and the touch mechanism is controlled to drive the touch head to slide according to the sliding path so as to simulate the sliding process of a finger in an actual situation, so that the sliding pressure test on the touch screen can be realized.

The invention provides a vehicle-mounted display screen pressure sensing system and method and a storage medium, the system comprises a screen glass cover plate, a display module and a pressure sensing diaphragm, and the pressure sensing diaphragm is placed between the screen glass cover plate and the display module; the pressure sensing diaphragm comprises a Wheatstone resistor matrix composed of N Wheatstone bridges, wherein N is a natural number greater than or equal to 1; a processor and a discrete device or an integrated circuit are further arranged below the display module; the pressure sensing diaphragm transmits pressure monitoring information and temperature compensation detection information to the discrete device or the integrated circuit; the discrete device or the integrated circuit transmits pressure monitoring information and temperature compensation detection information to the processor. According to the scheme provided by the invention, the precision of vehicle-mounted pressure sensing detection can be improved, and full-screen pressure sensing can be realized.

The invention relates to a SF6 gas chamber constant volume filling and discharging measuring device, which belongs to the technical field of SF6 equipment and solves the problem of how to design a device that can accurately measure the gas volume in the SF6 gas chamber when the pressure in the SF6 gas chamber is low or high. When the device of the invention is used to measure the gas volume in the SF6 gas chamber of an electrical device, when the pressure in the SF6 gas chamber is high, the deflation measurement is performed, and when the pressure in the SF6 gas chamber is low, the inflation measurement is performed. The measuring device cannot measure the pressure in the SF6 gas chamber in two situations at the same time. It has a wide range of applications. A constant volume filling and discharging gas tank is used to replace a weighing device, and a set of temperature and pressure sensors and a control valve group are used to realize temperature and pressure measurement under different conditions. There is no need to carry a weighing device to the site to weigh the gas cylinder. The device has a simple structure and is easy to install.

The invention discloses a pressure balancing part for a continuous wave mud pulse generator, and relates to the technical field of underground drilling tool equipment. The device comprises an axially telescopic transmission shaft piece and an auxiliary transmission piece, the auxiliary transmission piece is fixed on a mounting sleeve of the pulse generator, a rotary valve of the pulse generator is connected to a telescopic shaft of the transmission shaft piece, and the telescopic shaft of the transmission shaft piece penetrates through the rotary valve to be connected with the auxiliary transmission piece. A rotary valve rotor of the rotary valve is fixedly connected with a telescopic shaft of the transmission shaft piece, and a rotary valve stator is rotationally connected with the rotary valve rotor; when the transmission shaft piece drives the rotary valve rotor to rotate relative to the rotary valve stator, the telescopic shaft drives the rotary valve to integrally move in the axial direction of the mounting sleeve under the connection matching of the telescopic shaft of the transmission shaft piece and the auxiliary transmission piece. In the slurry throughput change process of the rotary valve, the rotary valve is made to make adaptive movement along the rotating axis of the rotary valve through the cooperation effect of the transmission shaft piece capable of stretching and retracting in the axial direction and the auxiliary transmission piece, so that the pressure at the position of the rotary valve is dynamically balanced.

The utility model relates to the technical field of swing valves, in particular to a swing valve driver which comprises a shell, a motor and a rotating shaft which are arranged side by side in the left-right direction are arranged in the shell, an annular protruding block is arranged on the outer wall of the rotating shaft, the shell is provided with a groove body for supporting and limiting falling of the annular protruding block, and a fan-shaped plate is arranged at the top end of the rotating shaft. The bottom end of the rotating shaft protrudes out of the shell to be connected with an external connecting rod, the end of the sector plate is connected with the rotating shaft, a plurality of tooth grooves which vertically extend and are distributed at equal intervals are formed in the arc-shaped side face of the sector plate, a gear meshed with the tooth grooves is arranged on a driving shaft of the motor, and a circuit board is arranged above the motor. The motor is fixed to the top face of the interior of the shell, the circuit board is fixed to the top face of the interior of the shell and electrically connected with the motor, a stroke sensor is arranged on the portion, on the swing path of the sector plate, of the shell, and the stroke sensor is electrically connected with the circuit board. And the swing position of the externally connected valve clack is accurate, and the angle is adjustable.

The invention relates to the technical field of photovoltaic power station energy storage devices, and discloses a packaging device for monitoring the tail end of an optical cable outside a sleeve, an optical cable protection clamping head is assembled on an upper connector body, the optical cable extends into the optical cable protection clamping head, the optical cable is protected, and an optical cable hole and two groups of optical cable steel wire riveting holes are formed in the upper connector body. The two groups of optical cable steel wire riveting holes are distributed on the two sides of the optical cable hole, so that optical cable steel wires on the two sides of the optical cable penetrate into the two groups of optical cable steel wire riveting holes, the optical cable is fixed, the optical cable clamping hole is communicated with the optical cable hole and the two groups of optical cable steel wire riveting holes, and the optical cable is protected after the optical cable and the optical cable steel wires are stripped. The sealing assembly is arranged at the end, close to the shell, of the upper connector body, sealing of the optical cable is achieved, and damage to the sensing optical cable caused by well pressure is avoided; the sealed cabin is arranged in the shell, and external oil, gas and water are effectively isolated in the sealed cabin; a balance piston is arranged in the sealed cabin to protect the balance between the pressure in the sealed cabin and the external pressure.

The utility model relates to a numerical control machine tool door convenient to observe. Comprising a door body, a glass plate arranged on the door body, a cleaning assembly for wiping the glass plate, a shielding strip for preventing greasy dirt from splashing out of the door body, a sliding piece for driving the cleaning assembly to move, an adjusting assembly for adjusting the cleaning assembly to apply pressure to the glass plate and a guiding piece for guiding the cleaning assembly. Two groups of guide pieces are arranged relative to the glass plate; a first sliding groove is formed in the door body; the sliding piece penetrates through the first sliding groove; the other end of the slider is connected with the cleaning component; and an adjusting assembly is arranged on the lower guide piece. The problems that a worker observes a workpiece being machined in a numerical control machine tool body through an observation window, and the machining progress and the machining condition of the workpiece are inconvenient to master by the worker are solved. And some cleaning components are high in adsorption capacity, so that the condition of incomplete cleaning is inevitably caused in the use process, and a worker needs to press the cleaning component to scrape the observation window back and forth.

The invention discloses a hydrogen-oxygen pressure balance control method and system, and relates to the field of general control systems. The control method comprises the following steps: obtaining an oxygen side pressure and a hydrogen side pressure, and setting a first preset pressure; adjusting the oxygen side pressure so that =, and adjusting the hydrogen side pressure so that = at the same time; when ==, setting a second preset pressure; adjusting the oxygen side pressure so that =, and adjusting the hydrogen side pressure so that = at the same time; when ==, repeating the above steps, sequentially setting a plurality of preset pressures and adjusting the oxygen side pressure and the hydrogen side pressure until == output pressure; the hydrogen-oxygen pressure balance control method provided by the invention adopts a stepwise comparative rising control method for pressure boosting, and the control method can realize equal pressure rising and equal pressure output of the hydrogen and oxygen sides under different production periods.

The utility model provides a kind of pressure control device for longitudinal ventilation and smoke exhaust of rail transit tunnel, comprising: horizontal diffuser duct, one end of the horizontal diffuser duct is connected with the upper side portion of flow guide duct, another end of the horizontal diffuser duct is provided with interface three for intercommunication with external two-way reversible tunnel ventilator, compared with prior art, the utility model has the following two beneficial effects: by setting horizontal diffuser duct, flow guide duct, relying on the flow guiding and pressurizing effect of flow guide duct and adjustable angle nozzle, the air flow rate of tunnel along the driving direction can be effectively improved, the air leakage in the opposite direction of tunnel is reduced, the equipment size of tunnel ventilator and the civil engineering scale are reduced while providing equal air supply for fire section; by setting horizontal diffuser duct, electric air valve one, electric air valve two, simultaneously opening electric air valve one and electric air valve two, the fan efficiency and exhaust capacity of tunnel ventilator are significantly improved.

A micro-adjustment mechanism for an electric cylinder roller coating machine based on planetary rollers is disclosed for use in the field of mechanical transmission. A motor is connected to a planetary gear reducer, which is fixed to a bearing housing. The bearing housing is fixed to one end of a housing. The planetary gear reducer is connected to one end of a planetary roller screw via a coupling. An angular contact ball bearing is installed between the planetary roller screw and the bearing housing. One end of a push rod is connected to a nut, and the nut is connected to the planetary roller screw via a roller thread. The push rod is slidably connected to the housing. A sealing end cap is fixed to the other end of the housing by screws. A copper slider is provided between the sealing end cap and the push rod. A sealing ring is provided between the push rod and the sealing end cap. A spherical bearing is provided between the other end of the push rod and the spherical bearing housing ring. The spherical bearing cap is fixed to the push rod. The spherical bearing is connected to a pressure sensor, which is connected to the roller of the roller coating machine. This invention enables precise pressure adjustment of the roller coating machine, better meeting the coating thickness requirement of ≤0.005mm.

The invention discloses a shale gas reservoir exploitation degree characterization method, device and equipment, and the method comprises the steps: determining a first influence factor of the shale gas reservoir exploitation degree based on the influence of the desorption effect and slippage effect of a reservoir matrix on the shale gas reservoir exploitation volume; determining a second influence factor on the shale gas reservoir production degree on the basis of the influence of the fracture form parameters of the reservoir and the transformation area parameters on the shale gas reservoir production speed; and on the basis of the first influence factor and the second influence factor, predicting the productivity of the shale gas reservoir established on the basis of the wavefront rapid propulsion method so as to represent the utilization degree of the shale gas reservoir. By means of the method, pressure prediction and yield analysis in the reservoir exploitation range are achieved, and then gas reservoir parameters of shale gas exploitation are optimized and improved.

This invention relates to the field of medical device technology and discloses a pressure-adaptive ankle brace, comprising a first fastening part, an ankle protection part, and a second fastening part connected in sequence. The first fastening part is a transversely elongated structure that wraps around and fixes the upper part of the ankle. The second fastening part includes a first sub-strap and a second sub-strap, which pass through the sole of the foot and adhere to the first fastening part to secure the ankle. The first and second fastening parts are each equipped with adhesive components. A pressure sensor is provided in the inner layer of the ankle protection part. This invention changes the passive restraint mode of traditional ankle braces, achieving real-time pressure sensing and response.

The invention belongs to the technical field of nuclear power thermal hydraulic calculation, and particularly relates to a reactor and primary loop system main pump clamping rotor hydraulic load calculation and analysis method. Comprising the following steps: step 1, main pump reduction design; 2, modeling the resistance element; 3, setting calculation conditions; 4, hydraulic load calculation and analysis of the main pump clamping rotor of the reactor and the primary loop system are completed. The method has the beneficial effects that the reactor primary loop system simplified three-dimensional model is constructed, the transient pressure wave and hydraulic load numerical calculation of the reactor primary loop system is realized based on the energy matching and resistance balance technology, the flow calculation precision of the reactor primary loop system under the accident condition can be greatly improved, and the flow calculation efficiency is improved. Transient pressure calculation and safety evaluation of the primary loop system of the reactor are rapidly realized, and input is provided for dynamic characteristic analysis of the primary loop of the reactor system.

The utility model relates to new energy vehicle motor manufacturing technical field especially relates to a test device. Among them, the bottom plate is provided with several installation grooves, and several installation grooves and several clamps are set up one to one, and the clamp can be installed in the installation groove, and the one end of the adjusting part passes through the fixed part and the moving part sliding connection, and the adjusting part can adjust the distance between the fixed part and the moving part, is used for clamping test copper wire, and the temperature sensor is arranged in the fixed part, and the temperature sensor is used for testing the temperature of test copper wire, and the pressure sensor is arranged in the fixed part, and the pressure sensor is used for testing the pressure that test copper wire bears. The device can realize the one-time test verification of multiple test samples through the setting of several clamps, improves the versatility of the test device, and the device can realize the pressure and temperature monitoring of the welding process through the integration of the temperature sensor and the pressure sensor, reduces the development process parameter error, reduces the process development part cost and manufacturing period, and meets the actual production demand.

The invention belongs to the technical field of internal pressure regulation of low-temperature refrigerant storage tanks, and particularly relates to a liquid helium Dewar pressure regulation device and method and application. Comprising a measuring element, a comparing element, an executing mechanism and a given element, the measuring element is used for measuring the internal pressure of the controlled object; the given element is a device for generating a given pressure signal; the comparison element is used for comparing the deviation between the input pressure signal and the feedback quantity; the execution mechanism can directly operate a controlled object. According to the device, the internal pressure of a liquid helium Dewar used for cooling a magnet coil is adjusted in the refrigerating process of the superconducting magnet. The liquid helium Dewar pressure adjusting device has the advantages of being low in cost, simple in structure, fast in pressure adjustment, sensitive in response, high in precision and the like, and automatic pressure adjustment and remote control operation can be achieved.

The utility model relates to the technical field of coating conveying, and discloses a mechanical coating pressure regulator which comprises an inlet pipe, the top of the outer wall of the inlet pipe is in threaded connection with an adjusting screw pipe, the inner wall of the adjusting screw pipe is fixedly connected with a limiting ring, and the top of the limiting ring is fixedly connected with a tension spring. The top of the tension spring is fixedly connected with a blocking ball, the top of the adjusting screw pipe communicates with a bottom cylinder, the top of the bottom cylinder is provided with a top cover cylinder, and the top of the top cover cylinder is provided with a plurality of fixing screws. According to the pressure adjusting device, the adjusting screw pipe enters the partition ring of the bottom cylinder, the adjusting screw enables the extrusion disc to slide in the shell, the spring is extruded, the limiting disc and the limiting chuck are clamped, when the pressure of the coating exceeds the elastic potential energy of the spring, the limiting chuck ascends, the coating flows out of the right side of the chuck and enters the connecting port, and pressure adjusting is achieved.

The application provides a leg assembly and a robot. The leg assembly comprises a piston rod, a piston tube, an elastic member and an adjusting assembly. One end of the piston rod is slidably inserted into the piston tube. The elastic member is arranged along the axial direction of the piston tube, and one end of the elastic member abuts against the piston tube, and the other end of the elastic member abuts against the piston rod. The end of the piston tube away from the piston rod is provided with a through hole, and the adjusting assembly is connected to the through hole. The adjusting assembly adjusts the flow state of the medium in the piston tube by closing or opening the through hole. In this way, the closing or opening of the through hole is controlled by the adjusting assembly to adjust the flow state of the medium in the piston tube, so as to realize the conversion of the elastic support and the rigid support of the leg assembly, thereby meeting the application scenarios of the elastic support and the rigid support.

The invention relates to the technical field of rock burst early warning and monitoring, in particular to a coal mine rock burst disaster prevention, control, detection and early warning device and an early warning method thereof.The coal mine rock burst disaster prevention, control and early warning device comprises a mounting block, a detection mechanism, a control mechanism and a cleaning mechanism, and the detection mechanism, the control mechanism and the cleaning mechanism are mounted on the mounting block; a transmission mechanism is mounted on the control mechanism, a sealing mechanism is mounted on the cleaning mechanism, a connecting mechanism is mounted on the mounting block, and a locking mechanism is mounted on the connecting mechanism; through cooperation of the detection mechanism and the control mechanism, the mounting block enters a designated position in a drill hole to perform pressure monitoring and early warning work, through cooperation of the transmission mechanism, the control mechanism drives the cleaning mechanism to clean sundries on the hole wall, through the sealing mechanism, one end of the mounting block is sealed, and through cooperation of the connecting mechanism and the locking mechanism, the mounting block is locked. And the two mounting blocks can be connected and pulled mutually when entering and exiting, so that entering and exiting are facilitated.

The utility model discloses a kind of elastic performance detection devices of rod parts, including bottom plate, clamping mechanism is set on bottom plate, and clamping measured rod piece;Linear guide rail is coaxial with clamping mechanism, linear guide rail is slidably set linear rail slider, linear rail slider is fixedly set slide table module on, slide table module is movably set plane force sensor and index pin, plane force sensor and index pin can exert pressure on the end surface of measured rod piece;Linear guide rail both sides are provided with two groups of laser transmission photoelectric switch, two groups of laser transmission photoelectric switch are set apart at a distance and can detect the moving distance of measured rod piece.The utility model can identify the elasticity of rod piece by different measurement methods through innovative design.Good or bad is replaced traditional manual measurement using digitized sensing technology, and error caused by human factor is eliminated.Through standardization operation, the stability of quality control is standardized.

The invention discloses a self-adaptive pressure relief type pressure sealing head which comprises an end cover sealing head, a fixed sealing plate is correspondingly installed in the end cover sealing head, a first pressure relief hole is correspondingly formed in the fixed sealing plate, and a supporting rod is correspondingly installed between the fixed sealing plate and the upper end of the end cover sealing head. A movable sealing plate is further correspondingly installed on the upper end face of the fixed sealing plate, rod holes are correspondingly formed in the movable sealing plate, and the supporting rods correspondingly penetrate through the rod holes so that the movable sealing plate can be correspondingly placed on the upper end face of the movable sealing plate. Through cooperation of the fixed sealing plate, the movable sealing plate, the air blocking rod, the air blocking plate, the mounting groove and the pressure relief hole, self-adaptive release and pressure reset of pressure airflow in the pressure container can be ingeniously achieved, the overall structure is quite ingenious and reasonable, and use is convenient; according to the technical scheme, the double-pressure-relief structure is adopted, the first pressure relief hole is formed, the second pressure relief hole is further formed, different pressure relief mechanisms have different pressure relief modes, and the structural arrangement is ingenious.