117 results about "Ambient pressure" patented technology

A gas measuring device (100) and a gas measuring process measure a concentration of a target gas. A detector detection variable sensor (12.1) measures a detection variable (U10) of a detector, which detector detection variable correlates with the concentration of the target gas in a gas sample (Gp). A compensator detection variable sensor (12.2) measures a detection variable (U11) of a compensator, wherein this compensator detection variable correlates less with the target gas concentration. The gas measuring device can be operated in a pressure-compensating mode and / or in a humidity-compensating mode. In pressure-compensating mode, the influence of the ambient pressure on a measurement result is compensated as best as possible under the boundary condition that the influence of the ambient humidity remains sufficiently small. In humidity-compensating mode, the influence of the ambient humidity on a measurement result is compensated as best as possible under a corresponding boundary condition.

The present disclosure provides a vertical furnace. The vertical furnace comprises a furnace tube, a storage device, a loading device, a wafer boat, a first carrying device, a second carrying device and a gas system. A furnace chamber used for heating a wafer is arranged in the furnace tube. The storage device is provided with a storage chamber and a carrying table located in the storage chamber, and the carrying table is used for carrying a wafer box. The loading device is used for loading a wafer box for storing a wafer to be heated. The wafer boat is used for moving a wafer to be heated between the furnace chamber and the loading device. The first carrying device is used for moving the wafer box between the carrying table and the loading device. And the second carrying device is used for moving the to-be-heated wafer between the loading device and the wafer boat. And the gas system comprises a gas inlet port and a gas outlet port which are arranged on the carrying table, and is used for introducing protective gas into the wafer box through the gas inlet port and discharging the gas from the wafer box through the gas outlet port so as to inject the protective gas of which the pressure is greater than the environmental pressure into the wafer box. Consequently, pollutants in the environment can be prevented from making contact with the wafer, and the interior of the wafer box is clean.

Methods, apparatuses, and systems for mechanically releasing a predetermined amount of supplemental oxygen to a user via a mechanical initiator are disclosed with the release of the amount of supplemental oxygen based on and in response to the combined factors of a user's determined oxygen consumption based on sensing a user's inhalation combined with determining the ambient pressure in the area of the user.

A separation station (1) comprising a plurality of separation units (34) for separating carbon dioxide and / or water vapor from ambient air, each separation unit (34) having at least one continuous sealing peripheral wall surrounding at least one cavity (24) in the circumferential direction, said at least one continuous sealing peripheral wall defining an upstream opening (35) and an opposite downstream opening (36), said cavity (24) preferably containing at least one gas adsorption structure (25) for adsorbing said at least one gaseous component under ambient pressure and / or ambient temperature conditions, said plurality of separation units (34) being arranged in at least one substantially vertical collector device wall structure (2) surrounding a single common separation station cavity (21) in the lateral direction, said separation station cavity (21) being covered and closed at the upper side by at least one cover unit (1) provided with at least one air propulsion device (10).

Described herein is a safety and support system for a fuel cell module comprising: a pressure-tight safety casing for enclosing the fuel cell module and for containing a fluid; a fuel supply system, arranged to transport fuel to the fuel cell module from an external source; an air supply system, arranged to transport air to the fuel cell module from an external source, an exhaust system, arranged to transport exhaust fluids from the fuel cell module out of the safety casing, and a casing atmosphere system comprising: an inlet into the safety casing having an inlet valve, an outlet from the safety casing having an outlet valve, means for evacuating the fluid from the safety casing through the outlet, and a pressure sensor, arranged for measuring a pressure of the fluid inside the safety casing, wherein the casing atmosphere system is arranged to maintain a below ambient pressure inside the safety casing. Also described herein is a method for preventing an explosive atmosphere inside a safety casing and a fuel cell system for marine applications.

The invention discloses a quick response reversing assembly applied to a portable air inflation device, relates to the technical field of air inflation devices, and aims at improving a ventilation pipe in the air exhaust action on the basis of the air suction / exhaust action of a piston pump, namely changing the communicating / blocking state in the ventilation pipe through the rotating action of a ventilation rotating ball on the basis of the ventilation rotating ball. On the basis, an improvement scheme about a single-pass ring pipe and a two-pass ring pipe is provided, arc-shaped sliding blocks are arranged in the two-pass ring pipe, when the ventilation rotating ball is switched to block the ventilation pipe, the first arc-shaped sliding block in the single-pass ring pipe accelerates the ventilation rotating ball to recover the blocking action with the high pressure difference as power, and the second arc-shaped sliding block in the two-pass ring pipe accelerates the ventilation rotating ball to block the ventilation pipe. Furthermore, the influence process on the environmental pressure in the dynamic bin when the arc-shaped sliding block I slides is utilized, and a rubber leather sheath arranged in the air vent is utilized to further accelerate plugging, so that the situation that the inflation efficiency is reduced due to high pressure difference is avoided in a high-reaction-capacity action mode; and secondly, the purpose of indirectly controlling the inflation / deflation action is achieved through the two-way ring pipe.

The present application relates to hydrogen leakage intelligent early warning technical field, a kind of intelligent early warning method and system based on hydrogen leakage dangerous degree in industrial production, method includes: in hydrogen leakage historical data set sequentially extracting hydrogen leakage historical data, using interval leakage concentration difference, leakage ambient temperature, leakage ambient humidity, leakage ambient pressure and target leakage concentration to train initial BP neural network, obtain target BP neural network, judge whether current hydrogen concentration is greater than first leakage concentration, if greater than, according to first leakage concentration and second leakage concentration calculate current leakage concentration difference, current leakage concentration difference, current ambient temperature, current ambient humidity and current ambient pressure are input into target BP neural network, obtain predicted leakage concentration, judge whether predicted leakage concentration is greater than early warning leakage concentration, if greater than, hydrogen leakage intelligent early warning is carried out.The present application can solve the problem that the monitoring precision is low and the monitoring effect is poor in the current hydrogen concentration monitoring.

The invention discloses a method and system for analyzing factors influencing radial expansion of flash jet flow of an oil injector, and relates to the field of oil injectors. Flash evaporation spraying images of the single-hole oil sprayer under different thermal working conditions are collected; the thermal working condition comprises injection temperature and environment pressure; obtaining a spraying width within a preset axial distance from a nozzle outlet according to the flash evaporation spraying image; establishing a nucleation rate model according to the injection temperature and the environment pressure; determining a nucleation rate index according to the nucleation rate model; taking the spray width as a measurement index of radial expansion, and establishing an incidence relation between the spray width and a nucleation rate index; according to the incidence relation, determining a factor influencing radial expansion: when the spray width is increased along with the increase of the nucleation rate index, the influence factor is the nucleation rate; when the spray width tends to be stable along with the increase of the nucleation rate index, the influence factor is heat energy required by vaporization.

A method and apparatus for performing post-exposure bake operations is described herein. After exposure of photoresist on a substrate, the substrate is heated during a baking process to facilitate protection of the resist. The baking process is performed in a vacuum environment at sub-atmospheric pressures. After baking at reduced pressure, the substrate is cooled. The cooling process is performed at sub-atmospheric pressures. Further development of the resist is performed at ambient pressures.

Systems, devices, and methods for a gas sensor comprising one or more optical cells; a processor having addressable memory, the processor configured to: detect gas from the one or more optical cells of the gas sensor, where the detected gas is one or more of: methane, carbon dioxide, hydrogen sulfide, water, ammonia, sulfur oxides, and nitrogen; record data corresponding to the detected gas, where the recorded data comprises at least one of: an ambient temperature from a temperature sensor, an ambient pressure from a pressure sensor, an aerial vehicle telemetry, and an aerial vehicle location from a global positioning system (GPS); and generate a map of atmospheric greenhouse gas concentration on a map based on the detected gas and the recorded data.

The invention relates to a pressure sensor (10) for measuring ambient pressure, comprising a first pressure measuring element (12) with a first cavity (16) and at least one first deflection element (20) spanning at least section by section over the first cavity (16) and deflectable in a normal direction (18) depending on the ambient pressure, a second pressure measuring element (14) with a second cavity (44) and at least one second deflection element (46) spanning at least section by section over the second cavity (44) and deflectable in the normal direction (18) depending on the ambient pressure, wherein the second deflection element (46) comprises the first pressure measuring element (12) and a peripheral deflection region (48) adjacent to the first pressure measuring element (12), wherein the second cavity (44) overlaps the first cavity (16) at least section by section with respect to the normal direction (18),wherein the first deflection element (20) has a smaller material thickness than the edge-side deflection area (48).

The embodiment of the invention provides a speed reducer used for underground driving and an underground tool assembly. The speed reducer comprises an input shaft, an output shaft and an output shaft, an output shaft; a gear train disposed between the input shaft and the output shaft and providing a first power transmission path having a first gear ratio and a second power transmission path having a second gear ratio greater than the first gear ratio; a pressure sensing part of the pressure driving assembly is exposed in the underground environment outside the speed reducer to sense the environment pressure, and the pressure driving assembly is configured to drive the speed reducer to rotate by means of force generated by the environment pressure when the environment pressure exceeds a preset pressure threshold value. The gear train is automatically switched from operating through the first power transmission path to operating through the second power transmission path.

The invention discloses a high-temperature-resistant, high-pressure-resistant and high-sulfur-resistant special shock-resistant pressure gauge, and relates to the technical field of pressure gauges. The device comprises a pressure measuring pipeline, a piston pressure column, a force sensing resistor, a stress top frame and a heat dissipation and self-cleaning device. And the piston pressure column is connected with the force sensing resistor and the stress top frame, so that pressure dual redundancy measurement is realized. The heat dissipation system comprises an inner side heat dissipation sheet, an outer heat dissipation sheet and a refrigeration secondary sheet, and the driving motor drives air flow to cool, so that the sensor is protected. And the self-cleaning function utilizes reverse airflow to remove dust, so that the maintenance cost is reduced. Isolation design prevents harsh environment from damaging electronic devices, and intelligent heat dissipation adjustment adapts to various working conditions. The problems that an existing pressure gauge is inaccurate in measurement, prone to damage and difficult to maintain are solved, and the pressure gauge is suitable for extreme environment pressure monitoring.

A safety negative pressure gas supply cylinder according to the present invention comprises a cylinder body, a pipeline structure, a first check valve, a second check valve, and an adsorbent. The cylinder body has an opening, and the space inside is used to store gas, and the gas forms a pressure lower than atmospheric pressure inside the cylinder body. The pipeline structure is disposed inside the cylinder body and communicates with the opening, and includes a first pipeline and a second pipeline. The first check valve is disposed in the first pipeline and has a first check valve opening pressure greater than atmospheric pressure. When the pressure of the external filling gas is greater than the opening pressure of the first check valve and the internal pressure, the external filling gas enters the cylinder body. The second check valve is disposed in the second pipeline and has a second check valve opening pressure. When the pressure of the gas inside the cylinder is greater than or equal to the opening pressure of the second check valve and the external ambient pressure, the stored gas flows out of the cylinder body. The adsorbent adsorbs and stores the gas.

The invention relates to a method and a device (1) for in-situ determination of the tempering state of surfaces (3, 4, 5), wherein the degree of change of at least one surface (3, 4, 5) over time is determined under an applied electric field, and wherein the electric field between at least two surfaces (3, 4, 5) is regulated or controlled, and wherein the surfaces (3, 4, 5) are arranged in a common, gas-tight housing (2), with a gas pressure in the housing (2) lower than the ambient pressure of the housing (2). The determination of the tempering state takes place during the tempering process, and the tempering process is regulated or controlled and / or terminated according to the determined tempering state.

A vaporizer device may include a pressure sensor and an ambient pressure sensor. The pressure sensor may be configured to measure a first pressure in an air flow path in the vaporizer device. The ambient pressure sensor may be configured to measure a second pressure corresponding to an atmospheric pressure. The vaporizer device may further include a controller. The controller may be configured to transition the vaporizer device to a first standby mode when the first pressure is equal to or greater than the second pressure for a first threshold quantity of time. While the vaporizer device is in the first standby mode, the controller may be further configured to transition the vaporizer device to a second standby mode when the second pressure is a threshold quantity greater than the first pressure and no motion event is detected for a second threshold quantity of time.

The invention relates to a method and a device (1) for processing surfaces (3, 4, 5), wherein an electric field is applied between at least two surfaces (3, 4, 5) in a common gas-tight housing (2), at a gas pressure inside the housing (2) which is lower than the ambient pressure around the housing (2). The energy from the electric field supplied to each of the surfaces (3, 4, 5) is closed-loop or open-loop controlled.

The invention relates to a method for adsorption and desorption of carbon dioxide from gas streams, with heat recovery, comprising at least two chambers (12, 14) alternately configured for adsorption and desorption, containing an adsorption material (1), wherein for desorption the chamber (12, 14) is operated at a reduced pressure and a temperature higher than the ambient temperature, and for adsorption at a pressure higher than the ambient pressure and a temperature lower than the ambient temperature.

The invention provides a fuel injection quantity control method and device, a storage medium and electronic equipment. Vehicle operation information and a correction value of the fuel injection quantity of a fuel injector are obtained, and the vehicle operation information comprises the environment temperature, the environment pressure and the air inlet pressure; the correction value of the fuel injection quantity comprises a correction value of the fuel injection quantity in a first temperature range, a correction value of the fuel injection quantity in a second temperature range and a correction value of the fuel injection quantity in a first altitude range; under the condition that the air inlet pressure is larger than the air inlet pressure target value, if the air inlet pressure is larger than the air inlet pressure threshold value, the oil injection quantity of an oil injector is reduced to be within the preset range matched with the engine design power; and if the air inlet pressure is smaller than or equal to the air inlet pressure threshold value, the oil injection amount is adjusted to be within the corresponding range based on the environment pressure and the environment temperature, and the corresponding range is determined based on the corrected value of the oil injection amount. According to the scheme, the problem that it is difficult to guarantee that the engine power is within the design boundary range through the control strategy of the fuel injector fuel injection quantity is solved.

This invention discloses a deep learning-based adaptive compensation method for temperature and pressure in an electrochemical oxygen sensor, relating to the field of oxygen content detection technology. The method includes the following steps: constructing a sealed test space and simultaneously conducting random oxygen content tests within the sealed test space, recording the oxygen content test data; analyzing the temperature offset relationship between the ambient temperature and the sensor temperature based on the oxygen content test data; analyzing the pressure offset relationship between the ambient pressure and the sensor temperature based on the oxygen content test data; analyzing the primary and secondary offset relationships based on the temperature and pressure offset relationships; and adaptively compensating the sensor temperature based on the primary and secondary offset relationships. This invention addresses the problem that existing oxygen content detection technologies using electrochemical oxygen sensors cannot eliminate reading deviations under different temperature and pressure environments, resulting in inaccurate oxygen content measurements.

The invention discloses a gauge pressure sensor, which comprises a shell defining a mounting cavity, the shell comprises an upper cover and a main shell which are bonded and combined together through a sealant, the upper cover comprises a ventilation part, and the ventilation part defines a ventilation hole; the dustproof cover is fixed outside the ventilation part, a ventilation gap communicated with the outer end of the ventilation hole is defined between the dustproof cover and the upper cover, and the dustproof cover is provided with at least one buckle clamped in the ventilation hole; and the pressure measuring assembly is arranged in the mounting cavity and is configured to measure the pressure difference between the pressure of the medium to be measured introduced through a pressure introduction channel on the shell and the environment pressure introduced through the ventilation gap and the ventilation hole in sequence. The invention further discloses an assembling method of the gauge pressure sensor. When the gauge pressure sensor is assembled, the size matching precision of the dustproof cover and the upper cover is relatively reduced, and the working procedures can be saved at the same time.

The application discloses a kind of intercooler fault control method, device, equipment and medium, comprising: according to the current driving road information of vehicle and driving demand power information determines intercooler control level;According to intercooler control level determines battery valve opening parameter;According to the comparison result of intercooler temperature and ambient temperature with preset temperature respectively, the comparison result of intercooler humidity and ambient humidity with preset humidity respectively, and the comparison result of intercooler pressure and ambient pressure with preset pressure respectively, determine intercooler control information.The method can determine the control level of intercooler according to the current vehicle driving information, can timely and accurately find the abnormality of intercooler pressure, humidity, temperature and take measures, ECU enters idle condition, reduces engine injection amount, avoids excessive injection to cause catalytic converter burnout and catalytic converter abnormal high temperature radiation causes vehicle spontaneous combustion and intercooler filter element leakage will lead to the risk of water flow into cylinder damage engine.

The application relates to the technical field of pumped storage technology, and discloses a correction method for calculating the suction height of a pumped storage power station in a high-altitude area, which comprises the following steps: obtaining test materials in the power station, a preset ambient temperature, an actual ambient temperature and a preset ambient pressure; based on the preset ambient temperature and the preset ambient pressure, a first test group is divided, and based on the actual ambient temperature and the preset ambient pressure, a second test group is divided; cavitation is generated near the test materials, a first function relationship of the test materials under the first test group and a second function relationship of the test materials under the second test group are obtained; for each second test group, based on the second function relationship of the second test group and the first function relationship of the first test group corresponding to the second test group, the environmental pressure change amount of each second test group is determined; and based on the environmental pressure change amounts of the multiple second test groups, a temperature correction term is determined to correct the calculation of the suction height. According to the application, the suction height can be accurately obtained, and the cavitation safety margin of the unit is reduced.

The utility model relates to expansion equipment which is provided with an expansion shell (10), the expansion shell is provided with a separating membrane (12), the separating membrane divides the expansion shell (10) into two medium chambers (14 and 18), one medium chamber (14) can be filled with liquid through a liquid connector (16) in the expansion shell (10), and the expansion equipment is characterized in that even in the operation process of the equipment, the medium chamber (14) can be filled with liquid through the liquid connector (16). The other medium chamber (18) is also permanently connected to the surroundings (21) via at least one opening (20) in the expansion housing (10) such that an ambient pressure is present in the other medium chamber (18).

The invention relates to a capacitive pressure sensor (10) for capacitively measuring an ambient pressure in a sensor environment (22), comprising a sensor unit (12) with an electrical bridge circuit (18) to which an electrical first input potential (D1) and an electrical second input potential (D2) are applied and from which at least one electrical output potential (S) can be tapped off and which has at least one first measurement capacitance (M1), which can be changed depending on the ambient pressure, between a first electrode (24) and a first counter electrode (26), at least one first reference capacitance (R1), which cannot be changed with respect to the ambient pressure, between a first reference electrode (28) and a first reference counter electrode (30), a first input connection (34) which is at the first input potential (D1), a second input connection (36) which is at the second input potential (D2) and an output connection (38) which is at the output potential (S), the bridge circuit (18) being of symmetrical design at least with respect to a surface of the sensor unit (12) about an axis of symmetry (46) running through the output connection (38).

The invention provides a system and a method for realizing performance test conditions of a hydrogenation machine. The system comprises an explosion-proof cabin; and the main control unit controls the refrigeration regulation and control valve to regulate the environment temperature in the explosion-proof cabin body. And the main control unit controls the heating regulation and control valve to regulate the environment temperature in the explosion-proof cabin body. And the main control unit controls the pressure regulation and control valve to change the gas quantity and speed of the inert gas entering the explosion-proof cabin body so as to change the pressure environment in the explosion-proof cabin body. And the main control unit forms a control signal according to monitoring results of the sensors and the environment monitoring unit, and controls the hydrogen concentration, the environment pressure and the environment temperature in the explosion-proof cabin body to be respectively kept in corresponding preset ranges, so as to ensure that the testing environment not only meets the national standard requirement, but also ensures the safety.

The invention relates to an analysis device (100). In a released end position, a valve (2, 13) releases a fluid guide unit between a measuring chamber (3) and the environment. In a closed end position, the valve (2, 13) closes this fluid guide unit. A gas sensor (50) measures the concentration of a target gas in a gas sample in the measuring chamber. A decision is automatically made as to whether the valve in the closed end position actually seals the fluid guide unit fluid-tight or not. For this decision, the valve (2, 13) remains in the closed end position throughout a test period. During this test period, a pressure sensor (12.1, 12.2) repeatedly measures the difference between the pressure in the measuring chamber and the pressure in the environment. If the pressure in the measuring chamber deviates sufficiently from the ambient pressure throughout the test period, the valve actually seals fluid-tight.If at the end of the test period the pressure in the measuring chamber deviates significantly less from the ambient pressure, the valve is leaking.

A sealing element for a high-pressure connection, including a first portion and a second portion. The first portion is configured to dispose the sealing element in a clearance. A first side of the first portion is disposed so as to be substantially orthogonal to a second side of the second portion. The second portion has a third side, and the second portion is configured to press the third side onto a gap to be sealed when an increased ambient pressure acts on the second side.

The invention relates to a method and a device (1) for processing surfaces (3, 4, 5), wherein an electric field is applied between at least two surfaces (3, 4, 5) in a common, gas-tight housing (2), with a gas pressure in the housing (2) lower than the ambient pressure of the housing (2). The energy of the electric field supplied to each of the surfaces (3, 4, 5) is regulated or controlled.

Housing (2), with a venting device (10) arranged on the housing (2), which allows the supply of ambient pressure to the interior of the housing (2), wherein the venting device (10) is formed from a sleeve-like protective cap (11) with lateral openings (12) and a liquid-repellent membrane, wherein inside the venting device (10) a cavity is formed to receive the membrane and the membrane is arranged such that an opening in the wall of the housing (2) provided for the pressure supply is covered, characterized by that the sleeve-like protective cap (11) has a narrow, circumferential widening (14) in the area of ​​its side surface, so that a defined drip edge is formed.