70 results about "Environmental pressure" patented technology

The invention discloses an in-kettle environment pressure stabilizing structure applied to an anhydrous hydrogen fluoride arsenic removal process, relates to the technical field of arsenic removal processes, and provides an improvement process about a rubber isolation pad and a lower supporting table on the basis of an oxidation reaction process in the anhydrous hydrogen fluoride arsenic removal process and on the basis of not changing the reaction process. The basic content is as follows: the reaction volume in the reaction cavity is changed by utilizing the elastic deformation of the rubber isolation pad and the supporting effect of the lower supporting table, so that the effect of preliminarily adjusting the environmental pressure in the reaction cavity is achieved; a combined or independent regulation and control process is carried out mainly aiming at a low-pressure state and an overpressure state, a pressure difference and pressure balance transfer principle is further utilized, and the environment pressure stabilizing effect in a container is achieved through the simplest and effective structure.

The invention discloses a robot system with tactile perception, and belongs to the technical field of tactile robots. The problem that an existing robot is poor in environment pressure sensing capacity is solved. Comprising a head module, an integrated vision-inertial navigation sensing module and a head controller, two side surfaces are provided with a pair of rotatable connecting ends, and the outer surface is provided with a tactile sensor; the head controller transmits data to the upper computer through the communication module; the driving body module comprises a plurality of modularized joints which are connected end to end, touch sensors are arranged on the two side faces of each modularized joint, and the adjacent modularized joints are orthogonally connected; the modularized joint is integrated with a joint controller and a joint steering engine; the tail module integrates a tail controller and a tail steering engine, and tactile sensors are arranged on the two side faces of the tail module. The tail controller carries out data transmission with the head controller through the adjacent previous joint controller in sequence, and the head controller receives a control instruction of the upper computer and carries out data transmission with all other controllers. According to the invention, the environmental pressure can be sensed in all directions.

The invention belongs to the field of multi-room negative pressure gradient control, and discloses a multi-room negative pressure gradient automatic control method and system based on reinforcement learning. An environment model containing multi-dimensional dynamic parameters such as an environment pressure state, an access control state, a fan air volume and a room coupling relation is constructed, so that the method can directly obtain an optimal control strategy through interactive learning on the premise of not needing an accurate physical model. Through the self-adaptive decision-making capability of reinforcement learning, linkage adjustment of the exhaust air volume and the fresh air volume of each room and the power of a total exhaust fan and a fresh air fan of the whole system is achieved, so that the stability of gradients of a corridor-5Pa, a ward-10Pa, a semi-polluted area-15Pa, a polluted area-20Pa and the like is kept, and it is ensured that the pressure difference of all areas is always within the safety range of-7Pa to-2Pa.

Self-adaptive fabrics for space applications are provided. In one aspect, a fabric for use in space includes a structural fabric and a plurality of synthetic fibers woven into a self-adaptive fabric. The self-adaptive fabric is attached to the structural fabric. Each of the synthetic fibers includes a plurality of hollow cells containing a trapped gas. The synthetic fibers are formed of a material having a sufficient elasticity such that the diameter of each of the synthetic fibers is configured to increase when the environmental pressure decreases.

The present application provides a calibration method and system for pressure sensor measurement data. The method includes: obtaining synchronous acquisition data of the original output signal of the pressure sensor and environmental parameters and performing preprocessing to obtain multi-source sensing data and dynamic environmental characteristics; constructing a comprehensive error model with multi-error coupling based on the multi-source sensing data and dynamic environmental characteristics, and generating dynamic compensation coefficients through online parameter identification; performing dynamic compensation calibration on the sensing data according to the dynamic compensation coefficients and a preset confidence evaluation strategy to generate a high-precision pressure value, and the high-precision pressure value is used to represent the real environmental pressure measurement value. Using this method can improve the accuracy and reliability of the tester in the calibration of pressure sensors under the coexistence of multiple errors and complex environments, and improve the accuracy and stability of the calibration of pressure sensor measurement data.

The application provides a device for testing a rotating part in a high-temperature environment, comprising: a test section for providing a simulated high-temperature environment for the rotating part, and provided with a first through hole and a second through hole; a first tension assembly for pulling an end of the rotating part extending out of the first through hole; a second tension assembly for pulling an end of the rotating part extending out of the second through hole; a first sleeve connected outside the first through hole and sleeved outside the first tension assembly, and provided with at least one first air inlet channel; a second sleeve connected outside the second through hole and sleeved outside the second tension assembly, and provided with at least one second air inlet channel; and an air pressure source connected to the at least one first air inlet channel and / or the at least one second air inlet channel and providing an air pressure greater than or equal to the environmental pressure in the test section. The application can accurately simulate the thermal-mechanical coupling loading environment in which the rotating part is in actual work, and effectively improve the reliability and accuracy of the test results.

The present invention relates to the technical field of data processing. More specifically, the present invention relates to a method and system for processing data of a resonant ultrasonic anemometer. The method includes: obtaining wind speed data collected by the resonant ultrasonic anemometer and environmental data collected by sensors, where the environmental data includes environmental temperature, environmental pressure, and environmental humidity; constructing an environmental compensation model, and correcting the relative error of the wind speed data caused by temperature change, humidity change, and pressure change through the temperature compensation coefficient, humidity compensation coefficient, and pressure compensation coefficient in the environmental compensation model, so as to compensate the wind speed data collected by the resonant ultrasonic anemometer by using the trained environmental compensation model to obtain the target wind speed at each moment. The present invention can improve the accuracy of the wind speed measurement result.

The invention relates to the technical field of carbon dioxide cured concrete, and discloses a carbon cured concrete wall forming system which is characterized in that gas pulse injection is carried out through a unit integrated with a pressure sensor and a temperature sensor, and the water content is estimated through pressure fluctuation before injection to set an initial strategy; the environment pressure sensor is synchronously utilized to calibrate and compensate collected pressure attenuation data during injection, closed-loop self-adaptive control over an injection strategy is achieved, gas injection and internal state sensing subjected to environment calibration are coupled, each time of injection is adjusted according to real physical response of a wall, and the injection accuracy is improved. By means of the design, the dependence on the external environment stability and the internal initial condition uniformity in the curing process is eliminated, and the homogeneity and reliability of wall curing under large-scale site construction are ensured.

The utility model relates to the technical field of environmental test equipment, and particularly discloses a window sealing device of a high-low temperature damp-heat low-pressure test box, which comprises a window frame, and a multi-sealing component, an elastic component and a buffer layer are arranged on the inner wall of the window frame; the multi-sealing assembly is composed of an outer-layer sealing ring, an inner-layer sealing ring and a middle supporting ring, the elastic assembly comprises a plurality of annular spring sets which are arranged on the outer wall of the extension plate and are annularly distributed, and the outer-layer sealing ring resists high temperature, chemical corrosion and friction loss and bears external environment pressure; low-temperature elastic compensation and deformation self-adaption capacity are provided through the inner-layer sealing ring, stress is dispersed in the middle of the supporting ring, the situation that single-layer sealing loses efficacy due to local overload is avoided, and therefore multi-layer sealing protection is achieved. The pre-tightening force of the annular spring set is transmitted to the supporting ring through the inner-layer sealing ring, overall supporting of the sealing structure is formed, and the annular array design of the annular spring set ensures that the pressure of the sealing face is evenly distributed.

The application is a kind of simulation field drilling experimental device and experimental method for hydrate drilling fluid, which comprises a multilayer experimental cylinder, a water depth environment simulation device, a drilling running device, a drilling fluid feeding device, a slurry returning device and a data acquisition system. The multilayer experimental cylinder comprises at least two cylinder sections, and each cylinder section is independently configured with rock layers to simulate various formation environments. The water depth environment simulation device injects pressure into the multilayer experimental cylinder to simulate the environmental pressure of water depth. The drilling running device simulates downhole drilling. The drilling fluid feeding device is used to circulate and inject drilling fluid into the multilayer experimental cylinder through a drill pipe and a drill bit. The slurry returning device is used to circulate and return the drilling fluid to the drilling fluid feeding device and evaluate the hydrate content in the returned fluid. The application simulates the temperature and pressure environment of offshore gas field with low temperature and high pressure in the laboratory experimental device, and sets different rock layer compositions and experimental conditions of hydrate content, which can optimize the formula of drilling fluid and reduce the risk of hydrate generation during drilling.

The utility model provides a pressure sensor accuracy test device comprising a water tank filled with water, one side of the water tank is correspondingly provided with a pressure pump, the other side of the water tank is correspondingly provided with a pressure gauge, the top of the water tank is correspondingly provided with a measurement interface, the measurement interface is correspondingly provided with a pressure sensor to be tested, and the pressure sensor to be tested is connected with the pressure pump. And the pressure pump, the pressure gauge and the pressure sensor to be tested are correspondingly and electrically connected with an external controller. According to the utility model, a gas pressure environment is replaced by a liquid pressure environment, so that the pressure conduction delay is effectively avoided, and the timeliness of the test sensor is ensured; meanwhile, the device can provide a dynamic pressure environment so as to simulate the change of environmental pressure to adjust the water pressure condition in the water tank, so that the accuracy calibration test of the pressure sensor is realized, the use limitation of the device is effectively reduced, the use work is very convenient, and the practicability is strong.

A pressure equalization device includes a retaining part having a gas passage opening and a membrane made of a flexible rubber material, where the membrane is retained on the retaining part and covers the gas passage opening. An ambient pressure is applied on one side of the membrane and pressure to be equalized is applied on the other side of the membrane, where the membrane has a metastable first state and a stable second state depending on differential pressure. The membrane, starting from a retained position in which it sealingly covers the gas passage opening, is metastable, and is sealingly retained on the retaining part, snaps into an open position in which it is stable, is released from the retaining part, and opens the gas passage opening.

A non-submerged cavitation-erosion synergistic damage simulation device, system and method belong to the field of hydraulic machinery working condition simulation, including a sediment jet channel and a cleaning fluid channel in its periphery; high-speed sand-containing fluid is introduced into the sediment jet channel to form a central high-speed jet impacting the sample surface, high-speed cleaning fluid is introduced into the cleaning fluid channel to form a peripheral low-speed water curtain surrounding the central high-speed jet after being ejected from the annular steady flow pipe, and the peripheral low-speed water curtain impacts the sample surface to form a local liquid phase confining pressure zone together with the central high-speed jet. The present application not only realizes the true simulation of the actual working condition under non-submerged conditions, but also can adjust the flow and pressure of the cleaning fluid to adjust the cavitation number and cavitation collapse intensity around the high-speed sand-containing jet without changing the atmospheric environmental pressure, and quickly adjust the simulation test parameters.

The application relates to a compressed air control type sealing execution mechanism of a ship stern sealing device, which comprises a sealing bush and a sealing seat body, the sealing bush is a dynamic ring, is connected with a propeller and rotates with a propeller shaft; the sealing seat body is a static ring, is installed in a propeller shell, and a wear-resistant ring and four lip type seals are arranged between the sealing seat body and the sealing bush, five cavities are formed, the lip type seal holding force is adjustable, the holding forces of the two lip type seals facing seawater are different, the holding force on the outside is smaller than that on the inside, and the pressure loss generated when compressed air passes through the inside seal can be compensated. When the water depth changes or the environmental pressure changes greatly, the lip type seal inner-outer pressure difference changes rapidly, the lip type seal opening does not become large due to the sudden increase of the pressure difference to cause seawater leakage, and the lip type seal does not become small due to the sudden decrease of the pressure difference to cause the lip type seal abrasion, and the working reliability and service life of the stern sealing device are improved.

1. Name of the product in this design: Multi-environment testing device. 2. Purpose of this design: To conduct high and low temperature environmental pressure tests and port accuracy tests on vehicle-mounted displays and controllers. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1.

The invention discloses a non-contact flatness correction method for a wafer, relates to the technical field of wafer calibration, and aims at the correction process of the wafer, and provides a lower supporting force for the lower side of a wafer body by taking gas as a soft medium. The key purpose is to forcibly drive the wafer to deform upwards by air pressure so as to counteract the downward bending deformation process caused by the gravity problem, the specific process is to fix the wafer in a negative-pressure adsorption mode, then air is continuously blown into the positive-pressure bin in a positive-pressure air blowing mode, and the key effect is that when the air is blown, the air is blown into the positive-pressure bin. Two actions of global positive pressure compensation and single-area positive pressure compensation are split, the environment pressure in a positive pressure bin is obtained in real time through a pressure sensor, the amount of blown-in gas is limited by simulating the environment pressure, the gas flow and the gas blowing mode are limited in a gradual increasing mode, and on the basis of correcting the planeness of a wafer, the planeness of the wafer is corrected. And secondary deformation damage is avoided.

This invention discloses a method for designing ventilation parameters for a supercavitating vehicle. Referring to the vehicle's shape and speed, the required ventilation volumetric flow rate for generating a suitable cavitation bubble size is calculated using the ventilation rate formula. The gas density inside the bubble is determined based on the environmental pressure and required cavitation number. The combustion surface of the solid propellant grain in the gas generator is designed in conjunction with fuel characteristics. Supercavitating vehicles designed using this invention are launched from underwater UUVs and surface ships, primarily for countering underwater targets. The method of this invention can efficiently obtain the ventilation parameters required for generating the appropriate supercavitation size when the vehicle is operating under variable conditions. Furthermore, through reasonable propellant design, the supercavitation size of the vehicle can be easily changed to adapt to changes in operating conditions. This avoids the problem of the vehicle not being fully covered by a supercavitation size that is too small after changing operating conditions, as well as the waste and even performance degradation caused by a supercavitation size that is too large.

The invention belongs to the technical field of filter sticks, and discloses a filter stick storage environment temperature and humidity regulation and control method and system based on pressure feedback. The method comprises the steps of obtaining the current temperature and the current humidity in a filter stick storage tank, determining a regulation and control target and generating regulation and control parameters when regulation and control triggering conditions are met, obtaining real-time environment pressure, and calculating correction parameters in combination with the regulation and control target and the pressure change trend so as to be applied to the regulation and control parameters. The regulation and control parameters are evaluated based on the temperature and humidity rising time period and the temperature and humidity falling time period, if the evaluation result is not passed, the step of generating the regulation and control parameters is executed again, the real-time temperature and humidity data is obtained to generate a risk level, and when the risk level is a high risk level, adjustment operation on the temperature and humidity regulation and control system is triggered. According to the method, the real-time environment pressure is introduced and fed back, multiple closed loops are formed in combination with parameter evaluation and risk early warning, regulation and control parameters are dynamically optimized, and the regulation and control accuracy, self-adaptive capacity and reliability are improved.

The invention relates to a gas turbine engine, a turbine tip clearance control method and system thereof and a medium. The control method comprises the steps that S1, the steady-state wall temperature of a casing, the total pressure of an ACC pipeline inlet, the total temperature of the ACC pipeline inlet, the environment pressure of an engine, the total temperature of a gas compressor outlet and the flow of the gas compressor inlet when the ACC is closed are obtained; s2, according to the data obtained in the step S1, the temperature drop and the cooling flow of the casing are obtained; and S3, according to the data obtained in the S2, the ACC valve angle is obtained.

The invention discloses an environment pressure detection method and system for a non-road gas engine and electronic equipment, and relates to the technical field of gas engines, the environment pressure detection method comprises the steps that whether the gas engine is in a preset working condition or not is judged, and the preset working condition comprises that the gas engine is in a shutdown working condition and is in a T15 power-on state for a preset duration; if the gas engine is in the preset working condition, whether a gas valve is closed or not is judged; acquiring an upstream pressure value and a downstream pressure value of the throttle valve; whether the upstream pressure value and the downstream pressure value of the throttle valve meet preset conditions or not is judged; and if the gas valve is closed and at least one of the upstream pressure value of the throttle valve and the downstream pressure value of the throttle valve meets the preset condition, the current environment pressure of the gas engine is determined according to the pressure value meeting the preset condition in the upstream pressure value of the throttle valve and the downstream pressure value of the throttle valve. No environment pressure sensor is adopted, cost is reduced, and practicability of the engine is improved.

The application belongs to the technical field of electric power robots. A transformer oil sample collection pressure dynamic adjustment control method and system are proposed. The flow characteristics are analyzed. Based on the real-time pressure and the environmental pressure difference, the oil density and the valve coefficient are combined to calculate the discharge flow. The feedforward-feedback composite control is executed. The pressure deviation is calculated and the instantaneous flow is estimated. The valve new opening degree instruction is output by using the adaptive control law containing the feedforward compensation term. The pressure mutation is actively inhibited. The multi-dimensional parameter online adaptive scheduling is implemented. The PID gain is dynamically adjusted according to the oil temperature and the oil type. The effective volume elastic modulus and the oil density are corrected. The application solves the problems of response lag and poor parameter adaptability of the traditional control, significantly improves the safety of the sampling process, and avoids the equipment damage caused by pressure impact.

The application discloses an end sealing welding process of a uniform temperature plate with a capillary structure, which can effectively reduce the invalid length and improve the welding strength, and the welding sealing reliability is obviously improved. The technical scheme is as follows: an end sealing welding process of a uniform temperature plate with a capillary structure, comprising the following steps: step 1: the end part of the uniform temperature plate with the capillary structure filled with a phase-changeable working medium is sealed by extrusion to obtain a sealed end with a certain invalid length; step 2: the part of the uniform temperature plate away from the sealed end is in heat conduction contact with a temperature control module, so that the vapor pressure of the phase-changeable working medium in the uniform temperature plate reaches a first pressure P1 and is stable; at this time, the environmental pressure is P0, the surface tension of the molten aluminum liquid generates a maximum pressure difference P2 on the heat conduction pipe; the absolute value of P1-P0 is less than P2; step 3: the invalid length part of the sealed end is fused by a welding process, so that the invalid length part of the sealed end is shortened, and the end face of the end part of the sealed end changes from a sharp end to an arc surface. Meanwhile, the application further discloses a uniform temperature plate and belongs to the field of uniform temperature plates.

The invention relates to the technical field of petroleum processing, and discloses a pre-mixing type hydrogenation reactor for petroleum processing, which comprises the following steps: acquiring current operation state data of the pre-mixing type hydrogenation reactor and environment monitoring data in the reactor; matching an adjustment factor in a preset rule base according to a load weight value in the current operation state data and an environment pressure value in the environment monitoring data; determining a safe lifting speed limit value according to the adjustment factor and the basic lifting speed of the pre-mixing type hydrogenation reactor, generating a lifting control instruction, and regulating and controlling lifting equipment in the pre-mixing type hydrogenation reactor according to the lifting control instruction; adjusting a weight parameter of the safe lifting speed limit value based on the vibration data of the lifting equipment, and generating a target safe lifting speed limit value according to the adjusted weight parameter; lifting the premixed hydrogenation reactor to a target state according to the target safe lifting speed limit value; the efficiency of the hydrogenation reactor in the working process can be improved.

Cost effective pressure sensors for gas meters are described herein. In an example, responsive to an abnormal condition at an ultrasonic metrology unit of a gas meter, rates of pressure sensor operation are increased. In the example, the operations may include: measuring gas-environment pressure values; measuring contemporaneous air-environment pressure values; calculating pressure difference values of the gas-environment pressure values minus the contemporaneous air-environment pressure values; and comparing pressure difference values to one or more threshold values.

A hydraulic motor for energy conversion and a method for operating a hydraulic motor 5 for energy conversion are provided. The target is achieved through the pressure eliminating unit, and the pressure eliminating unit can selectively eliminate the environment pressure outside the pressure eliminating unit.

The invention discloses a community diversity-based water ecological environment stability evaluation method and device, and belongs to the technical field of water ecological environment monitoring and evaluation. The method comprises the steps of collecting environmental parameters and community data of a plurality of sampling points of a target water area; respectively calculating an environment distance matrix and a community dissimilarity matrix between the samples; constructing a prediction model taking the environment distance as an independent variable and the community dissimilarity as a dependent variable; calculating an expected community dissimilarity of a target sample by using the prediction model, and comparing the expected community dissimilarity with a measured value; and quantifying the ecological stability of the water area of the target sample according to the deviation. Based on the theory of replacing time with space, objective correlation between environmental pressure and community response is established through a zero model, and the problems that traditional stability evaluation highly depends on long-time-sequence monitoring data, the evaluation period is long, and cross-point comparison is difficult are solved. The method is suitable for rapid evaluation in a single sampling scene, the evaluation result is objective, and the method can be widely applied to ecological health evaluation and pollution early warning of rivers, lakes, reservoirs and other water areas.

The invention relates to a shape sensing optical cable and a manufacturing method thereof. The shape sensing optical cable comprises an oil-filled sleeve, a reinforcing member, an inner sheath, a tight-buffered optical fiber and an outer sheath. A central optical fiber is arranged in the oil-filled sleeve, and ointment is arranged between the oil-filled sleeve and the central optical fiber. And a plurality of reinforcing pieces are spirally twisted on the oil-filled sleeve. The inner sheath is arranged on the outer side of the reinforcing piece, and a plurality of spiral pipe grooves are formed in the inner sheath at intervals along the circumferential side. The plurality of tight-buffered optical fibers are in one-to-one correspondence with the plurality of spiral tube grooves, and the tight-buffered optical fibers are embedded in the corresponding spiral tube grooves. And the outer sheath is directly arranged on the outer side of the inner sheath. The spiral tube groove is formed in the peripheral side of the inner sheath, and the tight-buffered optical fibers are spirally twisted and arranged in the spiral tube groove, so that the tight-buffered optical fibers are prevented from being damaged by external environment pressure; meanwhile, the inner sheath and the outer sheath are seamlessly connected, the outer sheath does not interfere with the tight tube optical fiber in the spiral tube groove in the extrusion molding and coating process, and a necessary movement space is provided for the tight tube optical fiber so as to reduce microbend loss.

The present application belongs to the technical field of hydraulic components, and discloses a plug-in type two-position four-way reversing valve, which comprises a valve cover, a valve sleeve and a valve core. The valve sleeve is internally provided with a through hole penetrating from top to bottom, and the valve core is slidably arranged in the through hole. The valve cover, the valve sleeve and the upper part of the valve core enclose a control cavity, and the control cavity is filled with control oil. The control oil pushes the valve core to move downward from the first position to the second position through pressure boosting. A reset structure is arranged between the valve core and the valve sleeve, and the reset structure resets the valve core to the first position when the control oil is depressurized. The valve core is internally provided with an oil channel penetrating through the lower end of the valve core, and the oil channel is in communication with a return oil port T, so that the internal and external cavities of the valve core are both filled with hydraulic oil, thereby the environmental pressures inside and outside the valve core can be offset, and the force acting on the valve core in the working process is the effective pressure applied by the control cavity to overcome the reset structure, which is beneficial to the stable operation of the reversing valve in a wide pressure range and improves the environmental pressure adaptability.

1. The name of this design product: Deep-sea hydraulic compensator. 2. Purpose of this product design: This product design is used to compensate for the pressure difference of underwater hydraulic oil tanks, provide pre-pressure to underwater hydraulic systems, balance the external environmental pressure of underwater hydraulic systems, and ensure safe operation of the system. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: Stereoscopic drawing 1.

The application relates to the field of automatic control, and discloses a valve regulation method and system based on deep-sea environmental pressure self-adaptive regulation, which comprises the following steps: synchronously collecting flow field disturbance state, external hydrostatic pressure evolution characteristics and speed change information in the diving process of a water area where a valve is located, and generating environmental response characteristic parameters; performing disturbance level division on pressure change behavior, and forming a hierarchical linkage control structure; combining the hierarchical linkage control structure, determining the disturbance level of the current water area, and generating subsystem trigger instruction information; when the disturbance level corresponding to the subsystem trigger instruction information satisfies a preset switching condition, corresponding pressure regulation control instructions are generated; in the process of executing pressure regulation by the regulation execution subsystem according to the pressure regulation control instructions, a feedback regulation mechanism is formed by combining valve internal and external pressure difference feedback information and safety pressure interval constraints. The application has the advantages of improving the hierarchical response and self-adaptive regulation capability of the valve to deep-sea transient pressure difference disturbance.