353 results about "Pressure control system" patented technology

The invention provides a servo press control system and method based on a time-sensitive network, and relates to the technical field of intelligent manufacturing and industrial automation control, and the system comprises a time-sensitive network TSN which is used for providing global time synchronization and deterministic data transmission; a main controller of the multi-axis servo control unit is used for issuing a motion control instruction and a feeding and discharging control instruction through a TSN. A robot controller in the robot feeding and discharging unit is used for driving an industrial robot to execute plate taking and placing operation under the action of the feeding and discharging control instruction. The visual monitoring unit comprises an industrial camera accessed to the TSN and is used for collecting images and transmitting image data to the edge computing node through the TSN; the edge computing node is used for processing the image data to generate a compensation instruction and feeding back the compensation instruction through the TSN; and the upper monitoring system is used for subscribing real-time data published by the edge computing nodes, so that the control range of the servo pressure control system is expanded, and the convenience of data transmission and interaction is improved.

The utility model discloses a backflow type icing wind tunnel capable of simulating a sand-containing ice crystal-containing environment, which belongs to the technical field of wind tunnels and comprises a wind tunnel body, a liquid particulate matter injection system, a solid particulate matter injection system, a phase change particulate matter injection system, a temperature control system, a pressure control system and a plurality of power systems. The wind tunnel body is sequentially provided with a stable section, a contraction section, a test section, a first expansion section and a second expansion section, and the liquid particulate matter injection system and the solid particulate matter injection system are both installed on the stable section. According to the backflow type icing wind tunnel capable of simulating the sand-containing and ice-crystal-containing environment, the content of sand and dust, the content of ice crystals and the content of liquid water in the wind tunnel body can be adjusted, and the temperature in the wind tunnel body can be adjusted, so that more complex weather can be simulated in the wind tunnel body, the accuracy of experimental data is ensured, and the experimental efficiency is improved. Therefore, the reliability and the safety of the aircraft in an extreme environment are improved, and the test efficiency is improved.

The invention discloses a hydraulic system sealing test bench and a sealing performance test method, and belongs to the technical field of sealing performance detection, the test bench comprises a vibration device, a pressure control system, a sealing element installation device, a flow adjusting system and a micro leakage detection unit; a to-be-tested sealing element is installed in the sealing element installation device to form a sealing cavity, and the sealing cavity is communicated with the pressure control system, the flow adjusting system and the hydraulic oil tank through pipelines to form a closed hydraulic loop. The vibration device is arranged on the outer side of the sealing element mounting device and used for applying vibration loads, the pressure control system is used for providing and adjusting hydraulic pressure in the sealing cavity, the flow adjusting system is used for controlling the flowing speed and flow of a hydraulic medium, and the micro-leakage detection unit is arranged below the sealing element mounting device and used for detecting leakage of the sealing cavity. The method has the advantages of being high in test condition controllability, high in leakage detection sensitivity, wide in adaptability and high in test result engineering guidance.

The invention discloses a wafer transmission pressure control system and method, the system is applied to semiconductor process equipment, the system comprises a semiconductor process platform and process cavities, the semiconductor process platform comprises an equipment front-end module, a load locking cavity and a plurality of transmission cavities, the transmission cavities are used for sequentially transmitting wafers to each process cavity, and the equipment front-end module is connected with the load locking cavity. A control valve is arranged between the transmission cavity and the process cavity and used for controlling communication between the transmission cavity and the process cavity. Particle testing is carried out through the wafer transmission pressure control system, and the optimal pressure difference between the transmission cavity and the process cavity can be determined, so that the problem that by-products in the process cavity return to the transmission cavity through the transmission channel due to improper pressure and pressure difference between the transmission cavity and the process cavity can be solved; therefore, the use effect of the semiconductor process equipment is improved.

The invention discloses a triaxial acoustic emission test device and method for multi-field coupling rock microbial grouting. The triaxial acoustic emission test device comprises a core triaxial pressure chamber, a freezing and thawing temperature control system, a water pressure control system, an axial loading system, an acoustic emission detection system, a microbial grouting repair device and an assembly data acquisition and control system, the test sample temperature is controlled through the freeze-thaw temperature control system, the pore water pressure is applied through the water pressure control system, the mechanical load is applied through the axial loading system, the damage signal of the test sample is monitored in real time through the acoustic emission system, the test sample is prepared through the microorganism grouting repair device, and the assembly data acquisition and control system performs integrated control and synchronous data acquisition. The test method comprises the following steps: preparing and installing a microbial remediation rock sample, applying freeze-thaw cycle, pore water pressure and axial load in sequence or in a coupling manner, monitoring the whole process by using an acoustic emission technology, and finally comprehensively analyzing a damage evolution rule and a performance degradation mechanism of the sample under the action of multi-field coupling. The device can simulate a complex environment and evaluate the microbial grouting repair effect.

The invention discloses an intelligent preparation system and process for a composite antibacterial material with synergistic interaction of nanoparticles, and relates to the field of preparation of composite antibacterial materials. The raw material pretreatment module integrates a nano particle purification unit, a base material modification unit and an antibacterial agent dispersion unit, so that the purity and the dispersity are improved; the intelligent proportioning and mixing module consists of a five-channel metering pump, a dynamic mixer and a concentration monitoring device and is used for accurately controlling the component proportion; the reaction synthesis module comprises a constant-temperature reaction kettle, a pressure control system and an inert gas protection unit, and stable reaction is guaranteed; the performance online detection module is used for testing the antibacterial property, the mechanical property and the microstructure; the intelligent regulation and control module optimizes process parameters through an algorithm; the product post-processing module comprises a filtering unit, a drying unit and a sterile packaging unit to ensure the product quality. The antibacterial performance and stability are improved, the antibacterial aging is prolonged, energy consumption is reduced, efficient, green and intelligent preparation of the composite antibacterial material is achieved, and industrial technology upgrading is promoted.

The invention belongs to the technical field of pulse dust removers, and particularly relates to an intelligent pulse dust remover and a control method. The control method comprises the following parts and steps: S1, monitoring the dust emission concentration in real time through a dust concentration detection sensor, and controlling a system to correspondingly and automatically increase and decrease the rotating speed of a frequency conversion fan and the opening degree of an automatic air regulating valve according to the increase and decrease of the dust concentration; s2, dust is discharged through a frequency conversion fan after being filtered; s3, the resistance of the filter bag is monitored in real time through a pressure difference sensor, when the pressure difference reaches an ash removal threshold value, a control system is started for pulse ash removal, and the injection pressure is dynamically adjusted by adjusting an electric pressure adjusting valve according to the set pressure difference change rate; and S4, the control system automatically controls opening and closing of the star-shaped discharging valve. The system has the advantages of dynamic ash removal control, dynamic working condition adjustment, low operation energy consumption and the like.

The invention discloses a high-pressure injection system and method. The high-pressure injection system comprises an equipment body, an injection propelling device, a needle cylinder pipeline suite, a medicine bottle replacing device, a bubble induction sensor, a gravity sensor, a pressure sensor and a control system, wherein the injection propelling device, the needle cylinder pipeline suite, the medicine bottle replacing device, the bubble induction sensor, the gravity sensor and the pressure sensor are installed on the equipment body; wherein the medicine bottle replacing device is used for containing and automatically replacing medicine bottles; the needle cylinder pipeline suite is communicated with the needle cylinder pipeline suite through a puncture outfit, and can selectively suck liquid medicine and continuously inject multiple patients; the injection propulsion device drives a needle cylinder piston to realize precise injection; the bubble induction sensor, the gravity sensor and the pressure sensor are respectively used for monitoring pipeline bubbles, medicine bottle weight and needle cylinder pressure in real time; the control system coordinates all the components, and full-automatic execution of medicine bottle replacement, medicine liquid extraction, pipeline exhaust and injection control operation is achieved. Full automation of the injection preparation process is achieved, the radiography examination efficiency is remarkably improved, the labor intensity of medical workers is reduced, and the safety and accuracy of the injection process are ensured.

The invention discloses a pressurizing oxygen cabin pressure control method which comprises the following control steps: after an oxygen cabin door is completely closed, a compressor in a pressure control system is started along with linkage control to implement a pressurizing mode in an oxygen cabin body; in the process of pressurizing the inside of the oxygen cabin, three paths of electric ball valves in the air circulation system are started according to three pressure gears set and monitored by an oxygen cabin pressure control system to open the corresponding electric ball valves to release pressure; and when the pressure in the oxygen cabin exceeds the pressure gear in the set three-gear pressure, the corresponding gear electric ball valve is automatically started and opened to execute the pressure relief task, so that the oxygen cabin pressure in the oxygen cabin is kept in a safe and effective pressure level interval, the pressure control in the oxygen cabin is simple, convenient and effective, and the pressure control cost is low.

The invention discloses a welding experiment system for simulating the Antarctic inland environment and a welding atmosphere control method of the welding experiment system. The welding experiment system is provided with an experiment module, a fresh air system used for managing gas components in the module and controlling humidity, a low-temperature control system used for establishing and maintaining a low-temperature environment in the module through a low-temperature medium, a discharging system used for safely discharging the low-temperature medium, and a low-pressure control system used for establishing and maintaining a low-pressure environment in the module. And a monitoring system. The monitoring system carries out feedforward prediction and rolling optimization based on an MPC algorithm, a mathematical model of the experiment module and real-time environment parameters in the module, so that the temperature, the air pressure and the gas components in the module are kept constant. According to the invention, a welding experiment in a low-temperature and low-pressure environment in the South Pole inland can be simulated, the technical problem that multiple environmental parameters in a closed cabin are difficult to keep constant in a dynamic welding process is solved, and a high-reliability platform is provided for polar region welding process research.

The utility model discloses a multi-stage distillation energy-saving device for Luzhou-flavor liquor, which comprises a distillation retort, a plurality of distillation steam outlets are arranged at the upper end of the distillation retort side by side, a master controller is mounted on the distillation retort, and the master controller is electrically connected with a pressure control system and a temperature control system. The pressure control system is used for adjusting the pressure intensity in the distillation retort during distillation, the temperature control system is used for monitoring the temperature in the distillation process and adjusting the heating power so as to extract different flavor substances, and the multiple distillation steam outlets are connected with condensation assemblies through heat dissipation pipes. A plurality of distillation steam outlets are formed in the condensation assembly, valves are arranged on the distillation steam outlets, a collection tank is arranged on one side of the condensation assembly, a liquid taking opening is formed in the collection tank, and the liquid taking opening is connected with an inspection machine used for detecting flavor substances.

The invention relates to the technical field of coal mine overlying strata separation layer grouting and filling mining, and particularly discloses an overlying strata separation layer grouting and filling mining underground grouting drilling construction method and a grouting system.The grouting system comprises a ground slurrying system, a slurry conveying drilling hole, an underground grouting pool, a high-pressure plunger pump, a directional drilling structure and a grouting pressure control system; slurry is prepared on the ground surface, and the slurry is pumped to an underground grouting pool through a slurry conveying drill hole; a high-pressure plunger pump is used for injecting slurry into the overlying strata separation layer through a directional drilling structure; the construction of the underground directional grouting drilling is carried out before the working face is mined, the track of the underground directional grouting drilling comprises a trepanning linear section, a pitching-up section, a linear section, a pitching-down section and an open hole section which are connected in sequence, upward penetrating and downward penetrating of a grouting key layer bottom plate are achieved, and a final hole is located below the key layer bottom plate by 5 m. The problem that ground drilling construction cannot be carried out under the complex terrain is solved, and the method has the advantages of being low in investment, high in efficiency and capable of releasing pressing and covering coal resources.

This invention relates to the field of oil and gas field development, and discloses a full-scale DAS (Digital Angiography and Semiconductor) device and method for monitoring the integrity of hydrate development wellbore. The device includes a formation simulation device, a wellbore simulation device, and a monitoring device. The formation simulation device comprises a temperature control system, a pressure control system, and a simulated formation. The temperature control system, pressure control system, and simulated formation are connected to the wellbore simulation device. The temperature control system and pressure control system are used to simulate the actual temperature and pressure of the hydrate formation. The simulated formation is prepared according to the actual mineral composition and grain size distribution of the hydrate reservoir. The monitoring device is located outside the wellbore simulation device and works in conjunction with the formation simulation device to perform real-time, full-well-section monitoring during hydrate development. This invention can simulate real wellbore conditions and perform real-time, continuous monitoring of the entire wellbore to meet the needs of dynamic downhole monitoring in actual production.

The invention discloses a hydrogen storage tank pressure control system of a hydrogen production, hydrogen storage and power generation closed-loop system, and relates to the technical field of hydrogen production, hydrogen storage and power generation, and the hydrogen storage tank pressure control system comprises a pressure data acquisition module which is used for acquiring internal pressure data of a hydrogen storage tank so as to monitor the internal pressure data change of the hydrogen storage tank in real time; the hydrogen output line is used for outputting hydrogen in the hydrogen storage tank, the hydrogen input line is used for inputting hydrogen into the hydrogen storage tank, the control execution module is used for controlling in and out of the hydrogen in the hydrogen storage tank, and the compression module is used for compressing the hydrogen in the hydrogen input line and increasing the pressure. The hydrogen flow rate monitoring module is used for monitoring the flow rate of hydrogen in the hydrogen output line and monitoring the flow rate of hydrogen in the hydrogen input line. The execution module and the compression module are controlled based on the stepped control model, so that the hydrogen flow rate in the hydrogen output line and the hydrogen flow rate in the hydrogen input line are changed until the pressure in the hydrogen storage tank is balanced.

The utility model provides a pressure regulation control system for a riser of a coke oven. The pressure regulation control system comprises a PLC (Programmable Logic Controller) system, a remote monitoring system, a remote IO (Input / Output) system and a riser opening and closing regulation system, the PLC system is used for controlling the opening degree of a turning plate of the whole turning plate pressure regulating control system and changing the area of a channel of the raw gas guided into the gas collecting pipe; the remote monitoring system is installed in a central control room; the remote IO system is used for collecting and transmitting information of the turning plate air cylinder on site and transmitting an executed control instruction; and the ascending pipe opening and closing adjusting system is used for receiving information of the PLC system to open and close a flap valve of an ascending pipe bridge pipe. According to the system, a cylinder, a valve positioner and other components are arranged on a mechanical water seal flap valve, a PLC system is used for controlling the opening degree of a flap, the area of raw gas guided into a gas collecting pipe channel is changed, and the purpose of adjusting the bottom pressure of a carbonization chamber is achieved by adjusting the guided-out amount of the raw gas.

According to the pressure control method and the servo pressure control system provided by the invention, through cooperative measurement of the small-range first pressure transmitter and the large-range second pressure transmitter, the defect of low precision of a single large-range pressure transmitter at a small pressure section can be solved; and the accuracy of small pressure measurement is improved while large pressure measurement is ensured. The corresponding control parameters are matched according to the preset pressure interval, the corresponding PID parameters can be matched according to different pressure ranges, and then the pressure control accuracy is improved.

The invention relates to the technical field of electro-hydraulic power sources, in particular to an electro-hydraulic power source pressure control system, method and equipment, and the system is provided with a hydraulic pump, a servo motor, a feed-forward controller and a control system, the torque controller is used for controlling the torque of the servo motor through a table look-up method according to a pre-established torque, rotating speed and pressure three-dimensional table, the pressure sensor is used for detecting the outlet pressure of the hydraulic pump, the rotating speed sensor is used for detecting the rotating speed of the hydraulic pump, and the feedback controller is used for adjusting the torque of the servo motor according to the outlet pressure of the hydraulic pump. The target pressure is obtained through the feedforward controller, the torque of the servo motor is controlled through a table look-up method according to the torque, rotating speed and pressure three-dimensional table, the torque of the servo motor is adjusted through the feedback controller according to the outlet pressure of the hydraulic pump, so that the outlet pressure of the hydraulic pump reaches the target pressure, and the pressure control precision of the electro-hydraulic power source is improved.

The present application relates to the technical field of sponge foaming forming, and particularly relates to a forming die and a pressure control system for sponge foaming forming, comprising a supporting seat, the upper surface of the supporting seat is fixedly connected with a processing table, the upper surface of the processing table is fixedly connected with an upper supporting frame, the upper surface of the upper supporting frame is fixedly connected with a gas cylinder, and the upper surface of the gas cylinder is fixedly connected with a gas pipe head; the present application is analyzed from two angles of rear end and front end to ensure the overall processing pressure control effect of sponge foaming forming processing, that is, the pipeline, gas compression and gas at the rear end are analyzed to reduce the influence of the pipeline, gas compression and gas on the pressure control of sponge foaming forming, which helps to improve the quality and efficiency of sponge foaming forming processing; under the normal premise of the rear end, the analysis is carried out in a deep and data fusion manner to understand the overall processing pressure control risk of sponge foaming forming, so as to improve the pressure control effect of the sponge foaming forming processing equipment through management.

This invention provides a crushing device and self-cleaning method for aluminum ash recycling, relating to the field of aluminum ash recycling technology. The crushing device includes a housing, a rotor rotatably disposed within the housing, hammers mounted on the rotor, and a grate screen disposed below the hammers' rotation path within the housing. The device includes a bracket, multiple grate bars mounted on the bracket, and multiple spacers positioned between adjacent grate bars. The side walls of the grate bars have slots for accommodating the ends of the spacers. Upper and lower chambers are located within the slots surrounding the ends of the spacers. Upper and lower pipelines, communicating with the upper and lower chambers, are located within the grate bars and are connected to different pressure control systems, which control the entry and exit of liquid media into and out of the pipelines and the pressure of the liquid media. The self-cleaning method includes: the liquid media circulating in the upper and lower pipelines heating the grate screen; the expansion and contraction of the upper and lower chambers causing the spacers to jump; and the expansion of the upper and lower chambers fixing the spacers. This invention can automatically heat the screen to dry materials clogging or adhering to it, shaking off the material to achieve self-cleaning.

This invention provides a fully enclosed microfluidic pressure control system and method, relating to the fields of cryogenic metering and precision pressure control. The system includes a first cryogenic thermostat and a second cryogenic thermostat; a connecting pipe linking the gas phase spaces of the two thermostats to form a fully enclosed gas loop; a gas flow control valve located on the connecting pipe; an active temperature control unit thermally coupled to the second cryogenic thermostat; and a central control system that, based on the deviation between the actual pressure and the target pressure of the first cryogenic thermostat, controls the active temperature control unit to adjust the temperature of the second cryogenic thermostat to generate a pressure difference, and controls the opening of the gas flow control valve according to the deviation, allowing the working gas to transfer within the fully enclosed gas loop to regulate the internal pressure of the first cryogenic thermostat. This invention achieves zero-loss recycling of the working gas and is suitable for high-precision pressure control in applications such as ultra-low temperature physics experiments, quantum computing, and cryogenic thermostats.

This application relates to a hydraulic brake cylinder pressure control system and its control method. The control system includes a pressure generation module and a pressure control module. The pressure generation module includes a check valve, an external accumulator, and an accumulator sensor. The check valve is connected to an oil tank. The pressure control module includes a proportional solenoid valve connected to the external accumulator and the brake cylinder; a pressure-holding solenoid valve located at the overflow port of the proportional solenoid valve, which is connected to the oil tank via the pressure-holding solenoid valve; a brake cylinder sensor collecting and outputting the brake cylinder pressure; and a brake cylinder pressure switch electrically connected to the brake cylinder sensor. During the relief condition, the proportional solenoid valve is de-energized and the pressure-holding solenoid valve is energized. During coasting or braking conditions, the proportional solenoid valve is energized, and the pressure-holding solenoid valve is de-energized after a delay. This application reduces the usage rate of the proportional solenoid valve and improves system reliability through the coordinated control of the proportional solenoid valve and the pressure-holding solenoid valve.

The application relates to a cold water machine with a buffer structure, which comprises a compressor, a condenser, a water tank, a water pump, a buffer tank and a constant air pressure control system which are connected in sequence, the compressor is connected with the water tank, the water tank is connected with the buffer tank and water using equipment respectively, the buffer tank is connected with the water using equipment, and the constant air pressure control system is connected with a compressed air inlet through an air inlet valve. The application solves the problems of poor vibration stability of a general cold water machine, large volume, high cost, inconvenient maintenance, installation and use, and low automation level.

The embodiment of the invention provides a carbon dioxide huff and puff experimental device and method under a tight oil reservoir, and relates to the technical field of oil and gas development. The experimental device comprises a sample chamber which is provided with an accommodating cavity; the injection structure is used for injecting water and oil into the containing cavity so that the rock core sample can be filled with the water and the oil, and the injection structure is used for injecting carbon dioxide into the containing cavity so that the carbon dioxide can enter the rock core sample and part of the water and the oil can be extracted; the pressure control system is used for applying pressure to the rock core sample; the heating device is used for heating the rock core sample; the pore detection device is used for detecting the pressure in the sample chamber; the resistance meter is used for detecting resistance parameters of water and oil in the rock core sample. Compared with the prior art, the amount of water and oil contained in the rock core sample can be detected and calculated through the pore detection device and the resistance meter, precision is high, errors are small, injection parameters of carbon dioxide can be conveniently adjusted according to the content of water and oil in the rock core sample, and the experiment efficiency is improved.

The embodiment of the present application provides a wellhead safety control system, which is used for improving the working efficiency and reliability of the wellhead safety control system. The control system comprises a high-pressure control system and a low-pressure control system. The high-pressure control system comprises a ground safety valve high-pressure control main circuit, a ground safety valve high-pressure control branch circuit, a downhole safety valve high-pressure control main circuit and a downhole safety valve high-pressure control branch circuit, and is used for providing high-pressure hydraulic pressure for the control system. The low-pressure control system comprises a fusible plug control branch circuit, a ground safety valve low-pressure control branch circuit and a downhole safety valve low-pressure control branch circuit, and is used for controlling the high-pressure control system to provide low-pressure hydraulic pressure.

The invention relates to a steering assembly including a steering wear compensator system having an active pressure control system. A wear compensator for a rack and pinion steering assembly having a rack in pinion engagement with a pinion shaft in a steering housing includes a rack follower configured to slidably engage the rack; a hydraulic plunger configured to selectively apply pressure to the rack follower; a source of hydraulic pressure operatively connected to the hydraulic plunger; a rack profile sensor configured to detect a force on the rack generated by gear engagement with the pinion shaft; and a wear compensator controller operatively connected to the rack profile sensor and the source of hydraulic pressure. The wear compensator controller is configured to adjust hydraulic pressure on the hydraulic plunger based on a signal from the rack profile sensor to selectively force the rack follower against the rack.

An infrared and acoustic emission monitoring rock true triaxial rapid unloading confining pressure test system and method. Mainly include: rigid pressure loading system, air pressure control system, gas confining pressure chamber, infrared observation system. The vertical loading system provides Z direction load; the lateral loading system provides Y direction load; the external gas source provides gas pressure, enters the gas pressure chamber through the floor gas pipeline, provides X direction load; the gas pressure chamber X direction is provided with front and rear infrared observation windows, both are CaF2 glass materials, can erect infrared thermal imager to realize infrared observation; the loading plate can be built-in acoustic emission probe through the detachable structure. The present application uses the pressure head and the pressure plate to provide the pressure in Y direction and Z direction through special design, uses the gas to supply the pressure in X direction, can realize the X direction rapid unloading, and solves the problem that the infrared visualization is difficult to realize in the true triaxial compression test process. Through the detachable design of the loading plate, the acoustic emission probe can be built-in.

The utility model relates to the technical field of polyether polyol sampling, and particularly discloses a sampling device for refined polyether polyol, which comprises a refining tank, and the bottom of the refining tank is connected with a filtering system through a second pipeline; the top of the refining tank is connected with the vacuum dehydration system through a first pipeline; one side of the lower end of the refining tank is connected with a circulating pipeline, a pump B and a sampler are mounted on the circulating pipeline, and the pipeline close to an inlet and an outlet of the sampler is connected with a nitrogen purging system through a third pipeline; and the circulating pipeline is also connected with a pressure control system. The nitrogen purging system is additionally arranged, so that the risk that the sampler is blocked by salt particles is reduced, and the process production stability is improved. According to the device, the circulating pipeline is additionally arranged, so that waste discharge during sampling each time is avoided, the product yield is improved, and the environmental pollution is reduced. Pressure control is additionally arranged at the outlet of the circulating pipeline pump, so that the emptying guarantee of the circulating pipeline is further increased; and the circulation pipeline blocking risk is reduced.

This invention provides a vacuum regulating valve pressure control system and its control method, relating to the field of vacuum regulating valve pressure control technology. The control method includes obtaining a specified rotational speed through a valve rotational speed model, and then controlling the valve plate of the vacuum regulating valve to rotate to a specified angular position based on the specified rotational speed; the valve rotational speed model is established based on the PWM pulse frequency and the Simoid function. The control method of this invention solves the problem that current vacuum regulating valve pressure control systems cannot meet the response speed and stability requirements of production lines, achieving the effect of improving system response speed and stability.