1311 results about "Pressure controlled ventilation" patented technology

The invention discloses a pressure-controlled drainage gas production method and system for a coal-bed gas well. The pressure-controlled drainage gas production method comprises the steps that drainage is conducted through the first daily drainage amount, wherein the first daily drainage amount meets the eliminating demand for production interference objects in a coal bed; and a pressure-supplementing medium is injected while drainage is conducted, and the downhole flow pressure daily drop amount is maintained as a first differential pressure value so as to avoid retracting and closing of pores and cracks in the coal bed. According to the pressure-controlled drainage gas production method for the coal-bed gas well, the drainage speed at the drainage state can be conveniently determined, the eliminating demands for drilling and completion fluids, pulverized coal and slack coal in the coal bed can be met, and meanwhile, retracting and closing of the pores and the cracks in the coal bed can also be avoided; and compared with the prior art, the pressure-controlled drainage gas production method is simple in process, the production efficiency of the coal-bed gas well can be greatly improved, and quite high practical value and popularization value are achieved.

The invention provides a small-capacity air bag blood pressure detection system and a precise pressure control method thereof. A micro air pump is communicated with an air inlet of a small-capacity air bag through a pipeline, and a linear proportional valve is arranged on an air release opening of the small-capacity air bag and used for controlling the opening, closing and flow of the air release opening of the small-capacity air bag; the miniature air pump is normally opened and provides stable-flow input air flow for the small-capacity air bag, the valve opening degree of the linear proportional valve is changed by executing a self-adaptive differential constant-pressure control algorithm, then the air release speed of an air release opening of the small-capacity air bag is changed, and pressure adjustment of the small-capacity air bag is achieved by changing the difference between the inflation speed and the deflation speed. According to the invention, rapid pressure stabilization can be realized, and pressure overshoot is hardly generated after the pressure is stabilized; the pressure control precision of 1mmHg at any pressure regulation step length is realized; the problem that the traditional single-parameter closed-loop control cannot meet the precise control of each pressure interval is solved; the production cost is further reduced, and the out-of-hospital scene adaptability and the popularization degree of the equipment are improved.

The invention relates to a system and method for rapidly establishing steady state vacuum chamber pressure. According to the system, the set value of the vacuum valve is fixed, and the driving current of the MFC electromagnetic valve is used for adjusting the pressure of the cavity, so that the pressure is stabilized more quickly. The system can operate in a training mode and an inference mode. In the training mode, a PID controller is used for determining set values of an MFC and a vacuum valve; in an inference mode during substrate processing, these settings are quickly invoked and executed, thereby achieving efficient and stable pressure control.

The invention discloses a time-phased intelligent pressure regulation management method and system for secondary water supply, and belongs to the technical field of water supply management, and the method specifically comprises the steps: dividing a day into a water consumption peak period and a water consumption low period based on historical water consumption flow data, and determining the starting and ending time nodes of each time period; through hydraulic calculation and actual water supply pressure monitoring, a pressure control point at the tail end of the water supply system is locked, and water supply pressure data of the point are collected in real time; in the water consumption peak period, a peak pressurization control strategy is executed; in the water consumption low-peak period, analysis is conducted according to historical water supply pressure data of a tail end pressure control point, and a low-peak period pressure safety threshold value is set; a pressure instruction is sent to a control system according to the threshold value, and water supply equipment is controlled to output pressure according to the threshold value; the water supply pressure of a tail end pressure control point is monitored in real time, and when the pressure is lower than a low-peak-period pressure safety threshold value, pre-alarm is triggered, and pressure changes are continuously recorded; and if the pre-alarm state is not finished continuously, switching to a peak-period peak pressurization control strategy.

The invention relates to a micro-pressure oxygen cabin self-adaptive pressure control method and system based on iterative optimization, belongs to the technical field of pressure control, and aims at solving the problems that existing micro-pressure oxygen cabin pressure control depends on manual repeated debugging, the efficiency is low, and self-adaptive optimization cannot be achieved. The method comprises the steps that in the pressure stabilizing stage of the micro-pressure oxygen cabin, the pressure in the cabin is monitored in real time, and when the pressure exceeds the upper limit or the lower limit of a preset pressure interval, a pressure stabilizing wave crest section or wave trough section opening degree adjusting algorithm is executed so as to adjust the opening degree of an electric exhaust valve. And after the single oxygen therapy process is finished, executing an iterative optimization step: automatically analyzing the pressure data of the current pressure stabilization stage by the system, and iteratively updating the control parameters for the next oxygen therapy process according to the pressure data. According to the method, self-learning and evolution of control parameters are realized through a closed-loop mechanism of real-time adjustment and redisk optimization, the parameters can be quickly converged to the optimal state within multiple times of operation, the debugging period is shortened, and the stability of pressure control is improved.

The invention discloses a femoral artery paracentesis post-operation pressure-controlled hemostasis device and a monitoring intelligent control system thereof, and relates to the technical field of medical apparatuses and instruments, and the femoral artery paracentesis post-operation pressure-controlled hemostasis device comprises an assembly panel; the air bags are arranged at the bottom of the assembly panel; the air pump is arranged at the top of the assembly panel and used for controlling the air bags to contract; the control piece is arranged at the top of the assembly panel and used for controlling the air pump; the Doppler probe is arranged at the bottom of the assembly panel and used for detecting the blood flow speed of the far end of a puncture point, the hemostasis safety and efficiency are remarkably improved through multi-mode intelligent control and a real-time feedback mechanism, the vein area is accurately recognized and avoided in combination with ultrasonic and infrared spectrum analysis of the artery positioning module, the thrombus forming probability is effectively reduced, and the blood flow speed of the far end of the puncture point is detected. The pressure-time optimization model dynamically shortens the compression time (target 3 hours) based on the real-time hemostatic effect, and improves the comfort of the patient while ensuring the hemostatic effect.

The invention relates to the technical field of tunnel fire smoke exhaust, and discloses a tunnel fire smoke exhaust method and system, and the method comprises the steps: receiving a fire signal, and recognizing the fire position information; dividing the tunnel into three functional areas including a fire disaster area, an upstream evacuation area and a downstream evacuation area according to the fire position information; calculating control parameters required for forming an air pressure isolation belt; the control instruction is sent to smoke exhaust equipment, the fire disaster area is kept in a negative pressure state, and upstream and downstream evacuation areas are kept in a positive pressure state; data are collected in real time, control parameters are dynamically adjusted, and the air pressure difference between the fire disaster area and the evacuation area is maintained. According to the method, safety evacuation passages on the two sides of the tunnel are guaranteed through regional differential air pressure control strategies; continuously optimizing control parameters by adopting a model predictive control method; and a multi-objective optimization algorithm is adopted, so that the system operation cost is reduced while efficient smoke discharge is realized.

The invention relates to the technical field of industrial automation, and discloses a self-adaptive dynamic pressure regulation energy-saving system and method based on pneumatic equipment, and the system comprises a state monitoring module which is used for constructing an operation state matrix of the pneumatic equipment; the pressure control module is used for generating a dynamic pressure control vector of the pneumatic equipment; the risk judgment module is used for calculating a real-time operation risk coefficient of the pneumatic equipment; the hierarchical regulation and control module is used for establishing a hierarchical regulation and control strategy set of the pneumatic equipment; the control feedback module is used for generating a self-adaptive control parameter sequence of the dynamic voltage regulation instruction and the state early warning instruction; and the scheme output module is used for integrating the dynamic pressure regulating instruction, the state early warning instruction, the hierarchical regulation and control strategy set and the self-adaptive control parameter sequence and outputting a self-adaptive dynamic pressure regulating and energy saving scheme of the pneumatic equipment. The energy utilization efficiency and the operation stability of the pneumatic equipment can be improved.

A device for testing gas tightness and internal gas flow performance of a low-temperature heat insulation module, comprising a gas inlet / liquid inlet module (200), a gas discharging / liquid discharging module (100), and a heat insulation module (1). The gas inlet / liquid inlet module (200) comprises an inner-layer space liquid nitrogen inlet valve (6), an outer-layer space liquid nitrogen inlet valve (13), a low-pressure pressure control module, an inner-layer space high-pressure pressure control module, an outer-layer space high-pressure pressure control module, a buffer tank (34), a pressure reducing valve (14), and a filter (35) which are connected by means of pipes. The gas discharging / liquid discharging module (100) comprises a liquid nitrogen / nitrogen gas discharging valve (3), an inner-layer space gas discharging valve (4), and an outer-layer space gas discharging valve (5) which are connected by means of pipes. An outlet of the gas inlet / liquid inlet module (200) is connected to an inlet of the heat insulation module (1), and an inlet of the gas discharging / liquid discharging module (100) is connected to an outlet of the heat insulation module (1). The device can achieve tightness inspection and adaptability research and testing and research of internal space gas flow performance of the heat insulation module (1) under a low-temperature working condition and a normal-temperature working condition.

The utility model relates to a small-sized low-temperature gas purification and pressure control device which comprises a particulate matter filter, a pressure buffer tank, a pressure controller, a purifier and a parallel gas conveying pipeline, the parallel gas conveying pipeline is divided into a gas inlet channel, a flow dividing channel, a purifying channel, a connecting channel, a refrigerating channel and a gas outlet channel through valve assemblies. According to the utility model, unnecessary parts are omitted, and only the particulate matter filter, the pressure buffer tank, the pressure controller, the purifier and the parallel gas conveying pipeline are reserved, so that the volume of the equipment is effectively reduced while the gas purity and the pressure stability are ensured, and the whole structure is more compact; and three different lines are arranged to carry out pipeline purging, gas leakage detection and gas conveying work respectively, so that normal operation of the refrigerating machine is guaranteed, the service life of a product is greatly prolonged, and the reliability of the product is greatly improved.

The invention belongs to the technical field of cooling towers, and particularly relates to a circulating spraying system and a cooling tower comprising the same, the circulating spraying system comprises a water pipe, a water tank arranged below the water pipe; the pressure control assembly is arranged in the water tank and comprises a sealing block, a connecting ring is arranged on the outer surface of the sealing block, and a connecting hole is formed in the lower surface of the connecting ring. During use, the water pump is started to feed water in the water tank into the atomizing nozzles through the water conveying pipe and the flow dividing pipe. Water flow firstly makes contact with the flow guide strips, impacts the flow guide pieces after drainage and drives the connecting plate and the transmission rod to rotate. The transmission rod penetrates through the first linear bearing and is matched with the second linear bearing to drive the cleaning support to rotate, the first spring buffers, the second spring pushes the cleaning support to enable the cleaning brush to be attached to the inner wall of the nozzle, and the inner wall is cleaned rotationally. After passing through the kinetic energy conversion assembly, the water flow is atomized and sprayed out through the spray orifice plate. The flexible nanofiber brush can remove dirt to avoid blockage, the inner wall is not damaged, and uniform atomization is guaranteed.

The speed-adjustable negative pressure drainage device comprises a drainage tube, a bottle body, a cover body and a negative pressure source connector, the cover body is rotated to drive a top ring cambered surface protrusion to jack up a bead body, a through hole is opened according to the angle gradient, external air enters dilution negative pressure, and linear speed regulation without negative pressure source adjustment is achieved; the bead body periodically opens and closes the through holes to form pulsating type instantaneous suction force, so that the adhesive force between blood clots and the tube wall is destroyed, and blockage is actively prevented; the gradient section of the drainage tube accelerates liquid flow through abrupt drop to generate local negative pressure to pull rear liquid flow; the upper convex hulls enlarge the sectional area of a pipe cavity before sharp drop, decelerate liquid flow and form a vortex region, so that blood clots are separated and deposited due to inertia, and liquid-solid layering is realized; the device has the functions of mechanical blockage prevention, precise pressure control and overload protection, the clinical blockage rate is reduced from 30% to 5% or below, power support is not needed, the device is suitable for postoperative drainage scenes such as the abdominal cavity and the thoracic cavity, and the medical operation load and the complication risk of a patient are remarkably reduced.

The invention relates to a pressure control method and system and a storage medium. The method comprises the steps that the monitored current angle of a butterfly valve and the monitored current pressure of a process cavity are obtained; determining the current air inflow of the process chamber according to the current angle and the current pressure of the butterfly valve; determining the predicted pressure of the process chamber at the next moment according to the current angle of the butterfly valve and the current air inflow; according to the set target pressure, the predicted pressure at the next moment and the current air inflow, the target angle of the butterfly valve is determined; and the operation path of the butterfly valve reaching the target angle of the butterfly valve in the shortest time is planned, and the butterfly valve is controlled according to the operation path so that pressure control over the process cavity can be achieved. The real-time air inflow is automatically estimated, the future pressure is accurately predicted, pressure overshoot is reduced, and the stabilization time is shortened; and the opening switching speed of the butterfly valve is maximized, the target angle is reached as soon as possible within the hardware bearing range, and then the pressure response speed is increased.

The invention discloses a storage tank pressurization control method and system based on LNG gas station fuzzy self-adaptive PID control, and aims to solve the technical problems that a traditional pressurization control method of an LNG storage tank is low in control precision, poor in stability and rapid in equipment abrasion. According to the control method, dynamic compensation for the target pressure is introduced, so that the system can aim at a more accurate control target in the initial stage, the steady-state control deviation is reduced, and the control precision is improved. And static pressure head change disturbance caused by liquid level change is overcome through dynamic compensation, the adjusting burden of the controller is reduced, the controller can focus on processing other dynamic disturbance, and therefore the control process is more stable, and overshoot is smaller. Through the design of a dynamic compensation mechanism and a special fuzzy rule base, the system can automatically adapt to various complex working conditions, and fast, stable and overshoot-free pressure control is always kept. Therefore, frequent and large-amplitude action and surge phenomena of the valve are avoided, and the energy consumption of an executing mechanism is reduced.

The utility model relates to a throttling pressure control manifold device, and relates to the technical field of drilling well control. The throttling pressure control manifold device comprises a throttling manifold, a pressure control manifold, a first connecting valve, a second connecting valve and a third connecting valve. The throttling manifold and the pressure control manifold are arranged at intervals in the first direction. And the throttle manifold is communicated with the pressure control manifold at the first connecting valve, the second connecting valve and the third connecting valve. The throttle manifold comprises a main throttle pipeline. The pressure control manifold comprises a main pressure control pipeline. Wherein the first connecting valve is connected with an inlet of the main throttling pipeline, and the first connecting valve is connected with an inlet of the main pressure control pipeline. The second connecting valve is connected with an outlet of the throttling manifold and connected with an inlet of the pressure control manifold. And the third connecting valve is connected with an outlet of the main throttling pipeline and an outlet of the pressure control manifold. According to the throttling pressure control manifold device, the throttling manifold and the pressure control manifold can work cooperatively to achieve two times of pressure control.

The invention provides an air pressure regulation and control device, a cold air micro-propulsion system and a satellite, and relates to the technical field of cold air micro-propulsion. The air pressure regulation and control device comprises a high-pressure valve, a two-stage pressure reducing valve, a precise pressure regulating valve, a buffer gas cylinder and a pressure sensor; one end of the high-pressure valve is connected with the high-pressure gas cylinder, and the other end of the high-pressure valve is connected with the two-stage pressure reducing valve through a first pipeline; the precise pressure regulating valve is provided with a first connector, a second connector, a third connector and a fourth connector, the first connector is connected with the two-stage pressure reducing valve through a second pipeline, the second connector is connected with the pressure sensor through a third pipeline, the third connector is connected with the buffer gas cylinder through a fourth pipeline, and the fourth connector is connected with the thruster. Compared with the prior art, the air pressure regulation and control device has the advantages that the mode of combining two-stage pressure reduction, air capacity buffering and air pressure closed-loop precise regulation and control is adopted, stable and low-noise air can be supplied to the thruster, and therefore high-stability and low-noise thrust output is achieved.

The invention relates to the technical field of medical instruments, in particular to a negative pressure treatment system for diabetic feet, which comprises an intelligent negative pressure control module, a multi-cavity flexible dressing, a multi-parameter sensing unit, a data processing terminal, a percolate collecting unit, a monitoring feedback module and a portable power supply, wherein the intelligent negative pressure control module is used for generating, regulating and controlling negative pressure; the multi-parameter sensing unit is used for collecting wound microenvironment physiological parameters; the data processing terminal analyzes the received physiological parameters and wound image data based on an AI algorithm, and sends an instruction to the intelligent negative pressure control module to dynamically adjust the negative pressure intensity and the work cycle; the percolate collecting unit is used for collecting percolate; and an image acquisition module in the monitoring feedback module acquires a wound image. Therefore, the problems that in the prior art, the negative pressure intensity and the work period cannot be dynamically adjusted, effective collection and analysis means for wound microenvironment physiological parameters and image data are lacked, and percolate collection lacks an intelligent monitoring and early warning mechanism are solved.

The invention discloses a gas TPSA compression interstage purification integrated device control system and method. The system comprises a gas compression unit, an adsorption purification unit, a regeneration gas treatment unit and a control unit. The gas compression unit comprises a gas inlet pressure stabilizing valve, a gas compressor preceding stage, an interstage gas-gas heat exchanger, a compressor backward stage, an interstage pressure control valve and a backflow control valve, wherein the gas compressor preceding stage is used for pressurizing low-pressure raw gas and backflow regenerated gas to the pressure required by purification; compression heat of the interstage gas heat exchanger is used for preheating regenerated gas; the rear stage of the gas compressor is used for pressurizing the purified raw material gas to the pressure required by the downstream; the technical problems that a traditional TPSA gas purification device needs at least two compressors for staged compression, purification and compression systems are high in energy consumption, and loads are not easy to adjust are solved.

The invention belongs to the technical field of medical drainage, and discloses a pressure self-adjusting drainage device which comprises a drainage water seal bottle and an inclined anti-dew mechanism. The inclined anti-dew mechanism is arranged on the drainage water seal bottle; the drainage water seal bottle comprises a bottle body, a liquid collecting cavity, a water seal cavity and a negative pressure control cavity are formed in the bottle body, a drainage pipe capable of being communicated with the liquid collecting cavity is arranged on the bottle body, a water seal pipe is fixedly communicated with the interior of the water seal cavity, a communicating pipe is communicated between the liquid collecting cavity and the water seal pipe, an air breather pipe is fixedly communicated with the interior of the negative pressure control cavity, and the air breather pipe is communicated with the negative pressure control cavity. The bottle body is communicated with a negative pressure pipe which can be communicated with the negative pressure control cavity; the inclined anti-dew mechanism comprises a fixing sleeve. By means of the design, the situation that pneumothorax is developed into open pneumothorax due to the fact that the end of the water sealing pipe is exposed can be avoided, then the sealing performance of the drainage device is guaranteed, air backflow is avoided, and meanwhile it is guaranteed that the drainage device can normally work in an inclined state.

The invention relates to the field of physiological signal detection, and discloses a blood pressure measurement system based on brachial artery cuff pressurization and finger PPG detection, which comprises a pressure control module, a PPG acquisition module and a central processing unit. The central processing unit is configured to extract a multi-dimensional PPG feature vector from the PPG signal in real time; dynamically adjusting the change mode of the cuff pressure applied by the pressure control module in a closed-loop manner based on the change of the PPG feature vector; constructing a dynamic response map based on the synchronously recorded cuff pressure and PPG feature vector; and determining a blood pressure value based on the overall analysis of the dynamic response map. Determining the blood pressure value specifically includes identifying a systematic distorted phase transition point in the atlas to determine systolic pressure. Through closed-loop adaptive excitation and global trajectory analysis, blood pressure determination is established on the basis of hemodynamic state transition, dependence on isolated event points is avoided, and measurement robustness and accuracy are improved.

The invention relates to the technical field of air purification, in particular to an operating room negative pressure purification air conditioning system and gradient air pressure control equipment. The system comprises a local air supply module, an air return wall, gradient air pressure equipment, a frequency conversion fan and an air distribution module, wherein a filter module is arranged at an air inlet of the frequency conversion fan; the local air supply module is installed above an operating table and provided with a vertically-downward first air outlet and an obliquely-arranged second air outlet. Through the design of double air outlets of the local air supply module, the high cleanliness of an operation area is maintained, the basic cleanliness of a medical care area is maintained, the cross infection risk is reduced, meanwhile, the air volume distribution module dynamically adjusts the air volume according to the operation stage (incision stage / suture stage), energy waste caused by global uniform air supply is avoided, and the operation efficiency is improved. And a three-stage adjusting cabin structure of the gradient wind pressure equipment is used for preliminarily optimizing the air flow, so that the pressure difference fluctuation when the negative pressure in the operating room is adjusted is reduced.

The invention relates to the technical field of oil exploitation, and discloses a combined throttling fracturing wellhead which comprises a fracturing wellhead body and further comprises a throttling shell, the throttling shell is installed on the fracturing wellhead body, a pressure control valve is connected to the throttling shell, and a head pipe is connected to the pressure control valve; the throttling assembly is used for stabilizing the flow velocity of the fracturing fluid entering the fracturing wellhead; and the shearing assembly is used for dispersing the agglomerated proppant in the throttling shell. Through the arrangement of the throttling assembly, the first core block, the second core block and the third core block form a plurality of flow channels, the flow channels can distribute fracturing fluid and reduce vortexes and backflow areas, and meanwhile the first core block can adaptively rotate along with the pressure in the throttling shell to adjust the sectional area of the flow channels and balance the flow so as to stabilize the flow speed; the flow rate and pressure of fracturing fluid are more stable, and caking and accumulation of the propping agent at the throttling position are reduced.

An apparatus for securing a pressure control tube in a user-defined position within a pressure regulator device is described. The apparatus has one or more engagement features and a releasable tube retaining means comprising a resiliently deformable locking member. The resiliently deformable locking member is configured to be releasably engageable with at least one of the engagement features such that engagement between the locking member and engagement feature causes resistance to movement of the pressure control tube within the pressure regulator device. The locking member can be at least partially disengaged from the engagement feature such that resistance to movement of the pressure control tube within the pressure regulator device is reduced.

The invention belongs to the technical field of airborne environmental control / heat management, and particularly relates to a negative-pressure-controlled phase-change heat exchange system which comprises a phase-change evaporation device for storing a phase-change working medium, and the phase-change working medium cools a working medium in a heat exchange unit through phase-change heat absorption; the heat exchange unit and the heat dissipation equipment form a circulation loop, and the circulation loop transfers heat through a working medium; the anti-freezing heating unit is used for heating the phase change working medium in the phase change evaporation device and preventing the working medium from being frozen under the condition of too low temperature; the vacuum generator is used for applying negative pressure into the phase change evaporation device and reducing the saturation temperature of the phase change working medium; the control unit detects the temperature, the pressure and the liquid level in the phase change evaporation device through a sensor, adjusts the vacuum degree in the phase change evaporation device according to control requirements, and starts the anti-freezing heating unit before the freezing temperature is reached, and the system has the advantages of being large in adaptive heat capacity, capable of achieving heat dissipation heat sink self-realization, low in airborne energy consumption, high in expansibility and the like.

Systems and methods of in situ pressure control at an anatomical environment during a procedure are disclosed. An exemplary irrigation and suction system comprises a user input configured to receive from a user a desired pressure to be applied to the anatomical environment, or a desired flow condition corresponding to the desired pressure. The system comprises a pressure sensor to sense a pressure at or near the anatomical environment, and a control module to adjust one or more of an irrigation flow rate or a suction flow rate of at least one working channel of a medical device to maintain the pressure of the anatomical environment at substantially a level of the desired pressure, or to maintain the desired flow condition in the working channel during the procedure.

The invention discloses an air bag shell injection molding device and an injection molding method thereof, and relates to the technical field of injection molding devices. Comprising an injection mold part, a feeding heating part is installed on the injection mold part, and the feeding heating part is used for preventing clamping stagnation; a closed mounting piece is mounted on the feeding heating piece; the closed mounting piece is positioned above the injection mold piece; an air pressure control piece is mounted on the closed mounting piece; the air pressure control piece is used for detecting injection material leakage; an elastic sealing piece is mounted on the sealing mounting piece; a heating switch is adopted, so that when the lower mold and the upper mold are separated and need to be demolded, only possible flashes can be heated and softened in a heating mode, and clamping stagnation damage can be avoided when the air bag shell is demolded; the problems that according to an existing safety air bag shell injection molding device, heating is not convenient to automatically control to prevent clamping stagnation, and meanwhile grouting leakage and gun head deviation are not convenient to detect in real time are solved.

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 relates to an air compression energy storage method and system based on liquid pressure control, which can improve the energy storage capacity of compressed air energy storage under the condition that the volume of an underground cavity is not increased by means of the action of liquid for pressure control in the underground cavity. The technical problems that in the prior art, the energy storage capacity can only be improved by increasing the size of the underground gas storage cavity, and site selection is difficult and cost is high when the size of the underground gas storage cavity is increased are solved. Moreover, the liquid is injected into the underground cavity, so that the pressure of the underground cavity is kept stable in the energy storage and release processes, on one hand, the energy storage capacity is improved, and on the other hand, the influence of pressure circulation fluctuation on the integrity of the underground cavity is reduced.

The invention discloses a thin-wall sweating cooling structure and an application method thereof. The sweating cooling structure is composed of a plurality of sweating units arranged in an array mode. Each sweating unit sequentially comprises a flow distribution layer, a pressure control layer and a porous sweating surface from bottom to top. The flow distribution layer internally comprises a sweating working medium inlet and a main flow channel for distributing flow; the sweating working medium inlet and the main runner are shared by the sweating units which are arranged in an array manner; the pressure control layer internally comprises a branch flow channel for distributing flow, a porous medium pressure control structure and a buffer area, the branch flow channel is connected with the main flow channel, and the porous medium pressure control structure is arranged parallel to the sweating wall surface; the porous sweating surface is composed of a plurality of sweating micropores and a non-permeable solid wall surface, and the number, the size and the angle of the sweating micropores can be adjusted according to flow regulation and control requirements. The structure has the remarkable characteristics that the structure thickness is small, the sweating flow distribution can be adjusted at will, the porous array structure on the sweating surface can be adjusted at will, and the use efficiency of the sweating working medium is high.