37 results about "Pressure controller" patented technology

This invention discloses a temperature-compensated seepage-shear coupling true triaxial testing apparatus and control method. The apparatus includes a pressure chamber, a shear box, a temperature control system, a pressure application system, and a temperature-displacement corrector. The shear box is housed within the pressure chamber. The temperature control system includes a heat transfer jacket, multi-point thermometers, and a temperature controller. The heat transfer jacket is fitted over the shear box, and the multi-point thermometers are located within the cavity. The pressure application system includes a confining pressure loading device, a pressure head, and a pressure controller. The confining pressure loading device injects a confining pressure medium into the pressure chamber, and the pressure head applies a force to the shear box. The temperature-displacement corrector is electrically connected to the temperature control system and the pressure application system. This apparatus features a temperature control system to precisely regulate the temperature during the test, thereby simulating deep environments at different temperatures. Furthermore, the temperature-displacement corrector dynamically corrects the force applied by the pressure application system, reducing additional forces caused by thermal expansion or contraction and improving stress control accuracy.

The embodiment of the application provides a kind of digital hydraulic closed pump control system and its control method, it can be applied to hydraulic transmission and control technical field, the system includes: closed hydraulic circuit, with high-pressure side oil circuit and low-pressure side oil circuit;Digital hydraulic valve group includes cartridge valve between high-pressure side oil circuit and low-pressure side oil circuit, cartridge valve has control cavity, the pressure in control cavity is used to control the conduction state of cartridge valve, multiple high-speed switch valve is connected with the control cavity of cartridge valve, for controlling the pressure of control cavity;Controller is configured to: when the pressure gradient of high-pressure side oil circuit exceeds limit value, multiple high-speed switch valve is output first control signal to drive multiple high-speed switch valve to adjust the pressure in control cavity, to make high-pressure side oil circuit and low-pressure side oil circuit at least partially conductive;When the pressure gradient does not exceed limit value, multiple high-speed switch valve is output second control signal to drive multiple high-speed switch valve to make cartridge valve keep closed state.

The application discloses a pressure controller, which comprises a shell, a working part and a switch part, the switch part comprising a movable contact, a first static contact and a second static contact, the switch part comprising a mounting part, a transmission part and a jump function part, the transmission part being in transmission connection with the mounting part, and the movable contact being in fixed connection with the mounting part; the transmission part comprising a limiting structure, the jump function part comprising a fixed end and a movable end, the fixed end being fixed in position relative to the shell, and the movable end being connected with the mounting part; when the pressure controller is switched from a first working state to a second working state, the working part moves upwards and abuts against the transmission part, the transmission part drives the mounting part to move upwards, and the movable contact is in contact with the first static contact; when the pressure controller is switched back to the first working state, the working part falls back, the transmission part moves downwards, the limiting structure abuts against the mounting part and drives the mounting part to move downwards, and the movable contact is in contact with the second static contact. Through the above structure design, the force distribution of the switch part is optimized, and the service life of the switch part is prolonged.

The utility model provides a kind of pantograph overhauling circuit, comprising first air switch, first fuse, first button, second button, first relay, second relay, third relay, first time relay, second time relay, first indicator light, second indicator light, first pressure controller, first differential pressure controller, first solenoid valve;The utility model is innovative design to air path and circuit, when opening U9 valve simulation air path leaks, solenoid valve is disconnected and closed, and total wind source is cut off.Real-time detection and safety control to air path are realized, problems in air path system can be found in time and handled through this innovative scheme, to avoid the occurrence of safety accident, pantograph overhauling work is provided with more safe and reliable guarantee.

This utility model discloses a cable rewinding protection device for an electric loader, including multiple magnetic blocks mounted on the side plate of the drum and a sensing probe mounted on the rear frame. It also includes a pressure controller, a stop detection controller, and a stop relay. This utility model detects a stop by sensing the magnetic blocks that rotate with the drum. When a stop occurs, an emergency stop braking control circuit controls the loader to brake, thereby preventing the loader from continuing to retreat and causing cable damage due to the drum stopping. This utility model also has the advantages of simple structure, low cost, and high reliability.

This application discloses an electrostatic chuck leak rate detection system, comprising: multiple channels connecting a gas source to the vacuum chamber of the electrostatic chuck under test, transmitting gas supplied from the gas source to the vacuum chamber; multiple universal pressure controller modules disposed outside the vacuum chamber and connected to the multiple channels one by one, each universal pressure controller module including a universal pressure controller, a pressure sensor, a flow sensor, and an electric regulating valve; a main control unit module communicating with the multiple universal pressure controller modules, used to: input a configured preset voltage and preset back pressure into a preset three-dimensional dynamic correlation model of voltage-back pressure-leak rate, so as to output the corresponding leak rate prediction value; when it is determined that there is a leak in the electrostatic chuck under test based on the leak rate prediction value and the leak rate detection value detected by the gas flow rate collected through each channel, the corresponding electric regulating valve is controlled by each universal pressure controller to adjust the gas flow rate transmitted to the vacuum chamber to form a preset back pressure.

This invention discloses an experimental device for simulating the flow law and dynamic liquid carrying capacity of a high-yield water-gas well, comprising a gas supply component, a gas-liquid mixing device, a wellbore simulation unit, a data acquisition and visualization unit, a pressure controller, a liquid supply unit, and a gas-liquid processing unit. The data acquisition and visualization unit includes a wire mesh sensor, a flow / pressure measurement device group, a high-speed camera, and a data terminal. The visualized tubing is mounted on a sliding rail-type variable angle multiphase pipe flow simulation device. The data terminal is connected to the wire mesh sensor, the flow / pressure measurement device group, and the high-speed camera. This invention can simulate wellbore flow under laboratory conditions with different visualized tubing angles, different pipe diameters, different gas-liquid flow rates, and different outlet pressure constraints, and has the function of synchronous acquisition and continuous recording of pressure, flow rate, liquid holdup, and high-speed images.

A method for actuating a mechanism in a brake booster unit. The method includes: ascertaining, using a control unit of a vehicle system, whether a driver's braking request has ended or whether there is no driver's braking request; detecting, using the control unit, an operational disruption of the brake booster unit; detecting, using the control unit, an operational disruption of a pressure controller, which is connected to the brake booster unit and configured to generate a braking pressure and / or a resetting pressure at a master brake cylinder unit of the brake booster unit; generating, using the vehicle system, a predetermined minimum pressure in the master brake cylinder unit and thereby resetting the mechanism and, by the mechanism, resetting a master brake cylinder into a neutral position.

This invention discloses a system and method for hydrostatic testing of reactor core detectors, belonging to the field of hydrostatic testing. It includes a water tank, a water injection pipeline, a pressurization pipeline, an intermediate pipeline, a pressure relief pipeline, and a control module. One end of the water injection pipeline and the pressurization pipeline are connected to the water tank. A water pump is connected to the water injection pipeline, and a pressurization pump and a pressure controller are connected to the pressurization pipeline. One end of the intermediate pipeline is connected to the other end of the water injection pipeline and the pressurization pipeline. The other end of the intermediate pipeline is equipped with a high-pressure interface for connecting an external pressure testing vessel. A pressure holding control valve and a pressure sensor are sequentially connected to the intermediate pipeline. One end of the pressure relief pipeline is connected to one end of the intermediate pipeline, and a pressure relief control valve is installed on the pressure relief pipeline. The control module determines whether the leakage of the test sample meets the product testing and inspection requirements based on the signal from the pressure sensor. In this embodiment, water is pumped into the pressure testing vessel before pressurization, resulting in a smaller impact force of the water flow on the leakage point, which can reduce safety hazards.

This invention provides a multifunctional downhole pressure wave controller, comprising a pressure controller body. Electrical signal wire connectors are embedded on the lower left and right sides of the pressure controller body. The invention is characterized by a support bracket installed on the lower part of the pressure controller body, and end lockers installed on the left and right sides of the pressure controller body. A connector protector is provided on the side of the end locker away from the pressure controller body. The support bracket includes a rear mounting plate, and recessed bolt storage holes are respectively opened at the four inner corners of the rear mounting plate. The beneficial effects of this invention are: the rear mounting plate, recessed bolt storage holes, controller bracket, positioning groove, and screw connection plate facilitate stable fixation of the pressure controller body, prevent damage at the connection points, and extend service life.

The utility model discloses a kind of pressure vessel intelligent control mechanism of convenient maintenance, it is related to pressure controller technical field, including controller shell, the front side middle of controller shell is provided with display screen, and warning light is provided below display screen, the right side of controller shell upper side is connected with connecting pipe, and connecting pipe is connected in pressure vessel pipeline by flange, and the left side of controller shell upper side is provided with several plug-in connectors, the inside of controller shell is provided with control module, sensing module and execution module, and control module, sensing module and execution module are all independent module, the rear side of controller shell is provided with mobile cover, and mobile cover constitutes up-down moving structure. The pressure vessel intelligent control mechanism of convenient maintenance solves the problem that traditional controller is cumbersome to overhaul, heat dissipation port is easy to block, the efficiency of overhaul is improved, the stability of operation is improved, and it is suitable for intelligent monitoring and control of pressure vessel.

The utility model relates to the technical field of coil processing, and disclose an electric control device for coil epoxy resin vacuum casting heating solidification, including electric heating furnace, still include: electromagnet coil, the utility model realized the automation control of temperature control and vacuum degree control, has comprehensive advantage in accuracy, stability, visualization etc. In the heating process, artificial intelligence temperature controller realizes the automatic control of accurate multiple program segments to temperature and time, improves the stability of the temperature in the furnace through the furnace temperature equalization heating heat circulation device, the design of the overtemperature and limit temperature protection device in the furnace, increases the security of the whole process implementation, the intelligent digital display pressure controller real -time monitoring furnace vacuum degree real -time value in the vacuumizing process, realizes the constant pressure automatic control and visualization function of furnace vacuum degree.

1. Name of the product in this design: Booster Pump Low-Pressure Controller (H1). 2. Purpose of this design: To collect temperature and pressure signals from LNG cylinders to control the booster pump. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

This application relates to a system for measuring key flow parameters at the inlet and outlet boundaries of a pipeline. The system includes: compressed air output from a gas source system, which is then regulated by a pressure reducer and dried by a dryer before being sent to the parameter measurement system. This system uses a gas flow meter to measure mass flow rate, and simultaneously uses a pressure sensor and thermocouple in the upstream chamber to collect stagnation pressure and temperature data, forming an inlet parameter set. A solenoid valve in the experimental pipe section is used to send gas to the pipeline model to form a stable flow, which is then sent to the downstream back pressure control system. The system uses a vacuum pump and pressure controller to regulate the chamber pressure, and sensors collect outlet back pressure data. A data acquisition and processing system simultaneously receives and integrates the above data, transmits it to a computer for flow theory calculations, and outputs the analysis results of key flow parameters at the inlet and outlet boundaries. This method enables accurate and efficient measurement of core flow parameters at the pipeline inlet and outlet boundaries.

This invention proposes a method and control system for controlling the steam pressure before the turbine of a high-temperature gas-cooled reactor, belonging to the field of high-temperature gas-cooled reactor automatic control technology. The control method includes: generating an open-loop control command when one of the reactors experiences an emergency shutdown and rapid unloading operation; superimposing the open-loop control command with a closed-loop control command from the pressure controller to form a general valve control command for the turbine; and adjusting the turbine valve opening in advance according to the general valve control command. This invention's control method combines rapid coarse adjustment with fine-grained closed-loop automatic adjustment, ensuring that the steam pressure before the turbine is maintained near the pressure setpoint, reducing large fluctuations in steam pressure, and thus ensuring the safe and stable operation of the unit.

The utility model discloses a pressure instrument batch high -efficient intelligent metering calibration device, including pressure controller, pressure source and detection connecting platform, and detection connecting platform assembly includes the pressure pipeline connected with pressure source, and a plurality of detection branch are connected in parallel on pressure pipeline, and still be equipped with a plurality of connection control each detection branch on -off solenoid valve module on pressure pipeline, and solenoid valve module is connected with pressure controller signal, be equipped with a plurality of detection interfaces for connecting pressure instrument on detection branch, still be equipped with pressure sensor module for measuring the gas pressure of detection branch on detection branch, the utility model discloses through pressure controller can according to the feedback of different branch pressure sensor module, accurate control each branch pressure peak value, realize once and calibrate many different range pressure instrument, through pressure controller according to the feedback difference of detection setting value and pressure sensor module, real -time adjustment pressure source output, realize pressure fast approximation detection setting value.

This utility model relates to the field of hydraulic cylinder control technology, specifically to a control system and a vacuum furnace. The control system is used to adjust the output pressure of the hydraulic cylinder inside the vacuum furnace, and includes a hydraulic oil tank, an adjusting mechanism, a detection mechanism, and a controller. The hydraulic oil tank is connected to the hydraulic cylinder via a hydraulic pipeline. Along the extension direction of the hydraulic pipeline, multiple adjusting mechanisms with progressively decreasing adjustment ranges are provided. The detection mechanism is located at the output end of the hydraulic cylinder and is used to detect the output pressure of the hydraulic cylinder. The controller is electrically connected to both the adjusting mechanism and the detection mechanism. The control system and vacuum furnace provided by this utility model can improve the adjustment accuracy of the hydraulic cylinder output pressure and prevent deformation of components pressed by the hydraulic cylinder.

The application discloses a whole piece device and an automatic wafer loading and unloading machine, and relates to the technical field of wafer production. The whole piece device comprises a whole piece assembly, and the whole piece assembly comprises a first whole piece unit, a second mounting seat, a first positioning wheel and a first pressure sensor. The first mounting seat is slidably arranged on a rack along the width direction of a belt line. The second mounting seat is movably arranged on the first mounting seat along the width direction of the belt line. The first positioning wheel is rotatably arranged on the second mounting seat. The first pressure sensor is arranged on the rack. The test end of the first pressure sensor is connected with the second mounting seat to detect the pressure generated when the first positioning wheel contacts the wafer. The controller is electrically connected with the first pressure sensor. The controller is used for controlling the working state of the automatic wafer loading and unloading machine according to the pressure detected by the first pressure sensor. The controller can avoid the wafer from being broken or having a broken edge due to excessive pressure. The application effectively improves the production yield and the overall production efficiency of the wafer.

The computer (200) obtains a pressure setpoint (p_set) for a programmable controller (170) associated with the oven (100) and controlling the gas pressure (p(t)) inside the oven. The controller (170) receives pressure data (p(t)) from a pressure sensor and interacts with a pressure valve. The computer (200) obtains a leak area image from a camera (140) installed outside the oven (100) showing an area (130) on the outer surface of the oven (100) where gas emissions may be present. The computer (200) processes the image with a pre-trained network and classifies the degree of emissions (d(t)). Applying predefined rules and based on the classified degree (d(t)), the computer (200) changes the setpoint (p_set) for the programmable controller (170).

The application provides a pressure control method applied to a pressure detection system, the pressure detection system comprising a pressure controller and a gas-liquid separator, and the method comprises the following steps: controlling the pressure controller to generate pressure; when the detection pressure reaches a first pressure threshold, controlling the pressure controller to stop generating pressure; when the detection pressure is between the first pressure threshold and a second pressure threshold, controlling the gas-liquid separator to periodically discharge liquid with a small time proportion, and the first pressure threshold is greater than the second pressure threshold; and when the detection pressure is less than the second pressure threshold, controlling the gas-liquid separator to periodically discharge liquid with a large time proportion. On the one hand, the small liquid discharge period time proportion ensures the safety of liquid discharge under a large detection pressure; on the other hand, the large liquid discharge period time proportion improves the liquid discharge efficiency under a small detection pressure, and the safe and efficient discharge of the liquid working medium is realized.

This application discloses a pressure controller, including a control component, a base component, and a transmission component. The control component includes a moving contact, a stationary contact, and an elastic sheet. The cover-like portion includes a downwardly protruding limiting protrusion, which includes a first stop portion. The middle section of the limiting protrusion can abut against the first stop portion. When the moving contact and the stationary contact are in contact, the maximum longitudinal distance H between the transmission component and the first stop portion of the pressure controller is defined as 0.5mm ≤ H1 ≤ 1mm. The pressure controller of this application limits the displacement of the elastic sheet through the limiting protrusion of the base. During the process of the transmission component pushing the elastic sheet to separate the moving contact and the stationary contact, the middle section of the elastic sheet can abut against the first stop portion. This reduces the excessive deformation of the elastic sheet caused by the instantaneous impact force of the transmission component when the moving contact and the stationary contact are separated, thereby ensuring the reliability of the pressure controller.

This utility model relates to the field of pressure controller testing technology, and discloses a pressure testing device for a pressure controller in a water pump supply system. The device includes a base with a three-way flow channel inside. A connecting pipe is fixedly connected to the back of the base. Both ends of the three-way flow channel extend upwards through the base. A standard pressure gauge is fixedly connected to the right end of the three-way flow channel. An internally threaded cylinder is fixedly connected to the right side of the upper surface of the base. An installation cylinder is installed inside the internally threaded cylinder, and an externally threaded cylinder is fixedly connected to the outside of the installation cylinder. An air hole is provided on the bottom surface of the installation cylinder. In this utility model, through the cooperation of the internally threaded cylinder, installation cylinder, externally threaded cylinder, air hole, elastic band, and adjusting components, the pressure controller can be installed by insertion and automatic pressing, avoiding wear at the connection between the bottom of the pressure controller and the base, extending the service life of the testing device, and reducing wear on the pressure controller.

This invention proposes an electronic pressure controller and its regulation and control method, as well as a gas chromatograph. The electronic pressure controller includes a housing, an inlet, an outlet, a pipeline, a pressure regulating valve, and a temperature control module disposed in the housing. The temperature control module includes a fan, a first heating element, and a first temperature sensor. The electronic control board determines the current ambient temperature of the pressure sensor based on the first temperature signal fed back by the first temperature sensor, and accordingly controls the operation of the first heating element and the fan to regulate and control the ambient temperature of the pressure sensor, so that the ambient temperature of the pressure sensor is maintained within a first preset temperature threshold, reducing the impact of temperature changes on the pressure sensor and improving the accuracy of pressure detection and control. The electronic control board is also used to adjust the opening degree of the pressure regulating valve according to the pressure signal obtained by the pressure sensor, thereby regulating the pressure in the pipeline within the preset pressure threshold to achieve the pressure control function.

This invention relates to the field of optical processing technology and provides a high-precision pressure controller with dynamic linear output. It includes a hardware control module responsible for program storage, computing power provision, and multi-voltage power supply; a hardware control module storing system configuration, force-PWM mapping table, and algorithm; a sensor acquisition module responsible for real-time acquisition of system operating status data; a pneumatic drive module responsible for converting electrical signals into mechanical pressure output, specifically including a push rod slider module, a pneumatic proportional valve controller, and a low-resistance compressed air cylinder; an algorithm processing module responsible for converting user commands into control signals; a host computer interaction module serving as the system's visual interface; a communication transmission module; and a safety protection module. This device avoids the instantaneous impact caused by direct pressurization in traditional controllers, meets the high-precision requirements of micro-force control in optical processing, and effectively protects brittle optical components, reducing the risk of processing damage.

The utility model belongs to air bag technical field especially is a kind of carousel formula multi-air path's air bag inflation equipment, including operation support box, the top of operation support box is provided with support ring, the inside movable joint of support ring is connected with connecting barrel, the top of connecting barrel is provided with operation turntable, the inside one side of operation support box is provided with motor, the output of motor is connected with rotating shaft, the bottom of rotating shaft is provided with rotating disc, the bottom of connecting barrel is provided with gear. Make operation turntable intermittent rotation, then make air pump work, to deliver air pressure to the inside of annular air pipe by connecting air pipe, then by air pipe and inflation nozzle output, make inflation nozzle insert into air bag inflation hole, to inflate air bag, and by setting digital display pressure controller and controller, make it control air pressure flow, and set multiple digital display pressure controller, make it can multi-air path inflation air bag, increase the effect of inflation.

The application discloses a kind of diffusion silicon pressure sensor output inspection and temperature error correction fast modeling method, comprising the following steps: S1, initial state interpretation;S2, set the temperature of high-low temperature test chamber to the lowest standard temperature;Set the pressure of intelligent pressure controller to the minimum standard pressure;S3, temperature data acquisition;S4, pressure data acquisition;S5, acquisition pressure sensor data under different pressure;S6, make the temperature of high-low temperature test chamber increase j ℃, set the pressure of intelligent pressure controller to the minimum standard pressure, repeat steps S3-S5, until the temperature of high-low temperature test chamber reaches the highest standard temperature when all data acquisition is completed;S7, construct temperature calibration model;S8, construct pressure calibration and temperature drift correction model.The method is easy to implement, the result is accurate, improves work efficiency, solves the correction model differentiation problem of different constant pressure conditions at different temperatures.

This utility model discloses a pressure controller, including a housing and a pressure gauge assembly, a control assembly, and a mounting bracket installed within the housing. The mounting bracket is fixedly installed within the housing. A positioning structure is provided between the mounting bracket and the rotating shaft in the control assembly. The positioning structure includes a positioning hole and a positioning shaft, one of which is located on the mounting bracket, and the other is located on the rotating shaft; the positioning shaft is rotatably connected to the positioning hole. The axis of the positioning hole / positioning shaft on the mounting bracket coincides with the design axis of the control assembly. One end of the rotating shaft is connected to the lower pointer in the pressure gauge assembly, and the connection between the rotating shaft and the lower pointer is configured such that when the lower pointer rotates, it drives the rotating shaft to rotate synchronously at the same angle; the axis of the positioning shaft / positioning hole on the rotating shaft coincides with the rotation axis of the rotating shaft itself. This pressure controller solves the problem in the prior art where the positional error of the lower pointer rotation axis in the pressure gauge assembly is amplified, leading to the failure of the pressure controller.

This application relates to an automatic liquid level control method and system for a multiphase continuous flow reactor, applicable to scenarios where the gas phase and liquid phase flow continuously simultaneously without the need for a liquid level sensor. The method includes: acquiring the equivalent gas inlet flow rate, reactor temperature, and gas phase outlet pressure; when preset identification conditions are met, controlling the electronic pressure controller on the gas outlet side to briefly close within a preset acquisition time, acquiring a first pressure value and a second pressure value during the closure process, and calculating the pressure change; based on the acquisition time, the equivalent gas inlet flow rate, temperature, and pressure change, calculating the equivalent gas phase volume between the reactor liquid surface and the gas phase outlet according to the gas state relationship, and establishing a reference volume using the initial identification result; periodically calculating the current equivalent gas phase volume in the operation control cycle, comparing it with the reference volume to obtain the deviation, and adjusting the liquid pump flow rate when the deviation exceeds a threshold to bring the equivalent gas phase volume back to the allowable fluctuation range, thereby achieving automatic liquid level stabilization.