32 results about "Pressure management" patented technology

The present disclosure relates generally to the field of cushioning articles, more specifically to the field of articles having pressure management and thermal insulation properties. The present disclosure also relates to a method of manufacturing such articles and to their use for industrial applications for pressure and thermal management applications.

The invention relates to the technical field of high-pressure tank liquid injection control, and discloses a high-pressure tank liquid injection process control method and system, and the method comprises the steps: setting control parameters: micro-injection and standing balance duration, a pressure reference value, an upper limit and a rate threshold; starting an injection pump and a liquid inlet valve, and entering a micro-injection stage; stopping the injection pump and closing the valve, and entering a feeding balance and pressure management stage; whether the accumulated injection amount reaches the total injection amount target or not is judged, and injection is repeatedly executed or stopped; continuously monitoring the pressure in the tank, and triggering an emergency shutdown program when the pressure in the tank reaches the upper limit of the pressure in the tank or the rapid rising speed threshold of the pressure; according to the method, through staged control (including a micro-injection stage and a standing balance stage) and multi-parameter monitoring, the problems of pressure abrupt increase misjudgment and injection interruption caused by temperature difference and dissolved gas precipitation in the prior art are effectively solved.

The application discloses a multi-mode gas management system, which comprises a pressure management system, a fuel supply control system, a reliquefaction control system, a reburning control system and a venting control system of a gas exhaust mast. The pressure management system is used for selection of a navigation pressure mode and a cargo hold pressure control mode. The fuel supply control system is used for providing fuel gas with stable pressure for power generation main engines and propulsion main engines. The reliquefaction control system lowers the BOG evaporation rate by lowering the temperature and pressure of the cargo hold, and deep-freezes and liquefies the BOG in the cargo hold. The reburning control system is used for protecting the pressure of the cargo hold. The venting control system of the gas exhaust mast is used for discharging gas into the atmosphere when the gas cannot be combusted and the ship is in the open sea. The application avoids unit pressure fluctuation interference in a mode, and guarantees safe and stable operation of an LNG transport ship.

In a system (10) and a method for pressure management while extracting a liquid from a liquid storage vessel (11), a liquid (12) and its vapour (13) are provided in liquid storage vessel (11). The liquid (12) is extracted by a pump (17) from the storage vessel (11) and fed as a liquid flow (19) to a consumer unit (16). A defined partial flow (19a) is separated from the liquid flow (19) downstream of the pump (17). The pressure of the partial flow (19a) is reduced by a pressure regulation means (20) and the partial flow (19a) is evaporated by an evaporator (22). The evaporated partial flow (19a) is fed back into the storage vessel (11).

The present utility model introduces an integrated building hydropower and pressure management system designed for gravity-fed water distribution lines. The system uses a specialized T-junction to divide water flow into a primary generation path and a parallel secondary pressure relief bypass. The primary generation path includes an in-pipe hydro turbine-generator system prioritized for continuous flow to harvest energy and reduce pressure during normal use. The parallel secondary bypass path includes a pressure relief valve and a pressure gauge that manage excess pressure spikes without restricting distribution. Both paths discharge to the water distribution line. This integrated approach ensures continuous, prioritized energy generation while providing safe and robust pressure regulation within the building infrastructure.

The application discloses a tank normal-pressure management platform multi-dimensional risk assessment system and particularly relates to the technical field of tank safety risk assessment, and the system comprises data acquisition, parameter preprocessing, multi-dimensional dynamic coupling calculation, risk grade assessment, visual output and model optimization feedback modules. The multi-dimensional dynamic coupling calculation module is internally provided with four units, namely, corrosion rate dynamic calculation, failure probability coupling analysis, overhaul cycle rolling optimization and foundation settlement layered evaluation. A dynamic coupling closed loop architecture is formed between the units through bidirectional data flow. The application realizes the collaborative analysis and dynamic optimization of corrosion rate, failure probability, overhaul cycle and settlement risk by constructing a multi-dimensional dynamic coupling assessment system, solves the problems of single assessment dimension and static calculation model in the prior art, significantly improves the risk assessment accuracy and the scientific nature of maintenance decision, and can be applied to the safe operation monitoring and maintenance management of normal-pressure tanks in the petroleum and chemical industries.

A pressure management unit (1) for the annulus of a well comprises a control unit (80), connected to a sensor (94, 95, 96) and to valves (57, 66) to compare the pressure against predetermined thresholds. If the pressure is too high, the control unit (80) commands a pressure discharge according to a predefined depressurisation function. If the pressure is too low, the control unit (80) commands a pressurisation according to a predefined pressurisation function. A control method for regulating the pressure of an annulus comprises: monitoring the pressure (P) in the annulus via a sensor (94, 95, 96), and commanding the opening of a regulating valve to depressurise the annulus according to a first predefined discharge function or commanding the opening of another regulating valve to pressurise the annulus according to a second predefined pressurisation function.

The pore pressure processing method and apparatus for shale formations provided in this application are applied to computer equipment. The method includes: receiving a user-uploaded acquisition command for a target shale formation through a preset interactive interface, and acquiring corresponding multi-source data and the duration of the geological process accordingly; determining the pore elastic parameters and sealing-decompression related parameters of the target shale formation based on the multi-source data; determining the corresponding hydraulic diffusion coefficient and sealing-decompression time scale based on the sealing-decompression related parameters; determining the corresponding decompression weight based on the sealing-decompression time scale and the duration of the geological process; constructing a temperature-pressure coupled control equation based on the multi-source data and pore elastic parameters; calculating the corresponding target pore pressure increment based on the decompression weight and the temperature-pressure coupled control equation; and determining the target pore pressure of the target shale formation based on the target pore pressure increment, thereby improving the accuracy and applicability of pore pressure processing for shale formations.

The invention discloses a direct seawater electrolysis electrolytic bath hydrogen production test device, which realizes full-flow automatic operation of a hydrogen production process through an integrated control system. The system has the functions of dual-mode circulation switching, collaborative stabilization of system pressure and liquid level, automatic electrolyte supply and temperature regulation and control, online sampling analysis and programmed pressure management, and performs synchronous monitoring and recording on multiple parameters such as temperature, pressure, flow and conductivity through a distributed sensing network. The problems of low automation degree, discrete control, difficulty in data tracing and the like in the prior art are effectively solved, and the test efficiency and the system stability are remarkably improved.

The invention provides an air pressure management device and an air pressure management method capable of determining the presence or absence of abnormality of tire air pressure and the type of abnormality with high precision. A cloud server (30), which is an air pressure management device, is provided with an abnormality determination unit (36) for determining the presence or absence of an abnormality in a tire (2) and the type of the abnormality on the basis of the result of comparison between a reference air pressure and a temperature-converted air pressure, the abnormality determination unit (36) being provided with: a first abnormality determination unit (36A); a first abnormality determination unit (36A) that determines that the tire (2) has an abnormality when the difference between the reference air pressure and the temperature-converted air pressure is equal to or greater than a first threshold value (K1), and that determines that the type of the abnormality is tire (2) bursts when the difference is equal to or greater than a second threshold value (K2) that is greater than the first threshold value; and a second abnormality determination unit (36B) that determines whether the type of abnormality is slow air leakage or natural air leakage of the tire (2) when the difference value is equal to or greater than the first threshold value (K1) and less than the second threshold value (K2).

A method of managing pressure in a wellbore having an annulus defined between a wall of the wellbore and a work string that includes drill pipe, a service tool, and a lower completion, the method comprising: performing the following operations, running the work string in hole down the wellbore while maintaining an annulus pressure while maintaining a hydrostatic pressure within the work string above a valve of the service tool, wherein the valve is configured to pressurize the annulus without pressurizing the work string.

The invention discloses an annular pressure regulating system for a compressed air energy storage well, which relates to the technical field of underground salt cavern reservoir engineering and comprises a buffer tank body, an injection and drainage unit and a monitoring unit. The buffer tank body is communicated with a shaft technical casing annulus through a pipeline; the injection and drainage unit is used for dynamically adjusting the proportion and pressure of gas and liquid phases in the tank; the monitoring unit monitors the position of the gas-liquid interface in the tank in real time, and the output of the monitoring unit is used for evaluating the sealing state of the annulus well barrier. The gas-liquid proportion of the buffer space is actively adjusted through the injection and drainage unit, and annular pressure violent fluctuation caused by high-frequency injection and production is effectively absorbed and stabilized; meanwhile, on the basis of continuous monitoring of the monitoring unit on the gas-liquid interface, early diagnosis and early warning of annulus protection liquid leakage are achieved. According to the system, passive buffering is converted into active adjustable pressure management, and the completeness and operation safety of the annular well barrier of the compressed air energy storage well are remarkably improved.

1. The name of the design product: pressure management device (X60). 2. The use of the design product: for gathering multiple cables together in a circuit, reducing the number of cables in the circuit. 3. The design points of the design product: in the overall shape of the product. 4. The picture or photo that best indicates the design points: perspective view.

A method can include connecting an apparatus between a pump and a standpipe, pumping fluid to the standpipe through a main flow line of the apparatus having a mass flowmeter connected therein, and pumping the fluid through a bypass flow line of the apparatus having another mass flowmeter connected therein to a return flow line upstream of a choke manifold, without the fluid flowing through the standpipe. A flow measurement and diversion apparatus can include an inlet connected to a pump, an outlet connected to a standpipe, and another outlet connected to a return flow line, a main flow line connected between the inlet and one outlet, and a mass flowmeter connected in the main flow line, and a bypass flow line connected between the inlet and the other outlet, and another mass flowmeter connected in the bypass flow line.

The method for evaluating the starting time sequence of the geomechanical instability induced by CO2 injection in overpressure reservoirs relates to the technical field of carbon capture, utilization and storage.The present application establishes an initial state of pore pressure and ground stress self-consistency by constructing a two-dimensional fully coupled porous elastoplastic model and using a multi-stage prestress initialization strategy to simulate the natural overpressure background.On this basis, the coupled control effect of injection pressure and well-fault spacing on the time sequence of caprock tensile crack initiation, fault shear activation, plastic accumulation and permeability increase feedback is systematically analyzed.The present application first identifies the "blind fault pressure relief feedback time lag" mechanism in which the caprock tensile crack initiation precedes the effective pressure relief feedback of the fault under the conditions of ultra-low permeability, natural overpressure and short-term strong overload.The present application provides key geomechanical basis for the safe pressure management, well deployment and risk monitoring and early warning in the CO2 geological storage in overpressure reservoirs, and solves the technical problem that it is difficult to determine the competitive instability leading mode in the prior art.

The invention relates to the technical field of emergency rescue, daily filling or base gas cylinder filling, and discloses a portable high-pressure air purification bridging device and a pressure supplementing method thereof.The portable high-pressure air purification bridging device comprises a high-pressure input assembly, a purification control assembly and a safety output assembly; the high-pressure input assembly further comprises a connecting interface, a high-pressure conveying pipeline and a primary protection unit, the purification control assembly further comprises a multi-stage integrated purification unit and an intelligent monitoring and safety interlocking unit, and the safety output assembly further comprises a respiratory compatibility high-pressure guide pipe, an anti-misconnection safety interface and an output pressure management unit. Polluted air input by a non-breathing-level high-pressure air source such as an industrial air compressor can be rapidly purified into clean air meeting the breathing safety standard, emergency pressure supplementing is carried out on an air cylinder of the positive-pressure type air respirator, and the problems that pressure supplementing is difficult for the positive-pressure type air respirator of a grassroots unit, and the positive-pressure type air respirator depends on a fixed filling station are solved.

The present invention discloses a novel bladeless wind turbine power generation system designed to efficiently harness wind energy in environments where traditional large-blade turbines are impractical The system features a cylindrical hollow pipe with spiral air inlets, which initiates wind channelization. A bladeless fan, positioned at one end of the pipe, creates negative air pressure, facilitating continuous airflow through the pipe. This airflow is then directed through a series of concentric reducer pipes with strategically placed inlets, accelerating wind flow and enhancing pressure management. The wind is ultimately channelled into a motor where a rotating shaft converts the kinetic energy into mechanical energy, which is further transformed into electrical energy. The design minimizes noise, visual impact, and wildlife risks compared to conventional turbines. The invention is particularly advantageous for narrow or spatially constrained locations such as urban areas and valleys, offering a high-efficiency, cost-effective alternative to traditional wind energy solutions.

The invention relates to an active compensation type disc spring assembly pressure management method for a PEM electrolytic cell. The method comprises the following steps: in an initial pressing stage, controlling each active compensation executing mechanism to load the electric pile at a preset pressure rising speed, calculating the pressure distribution unevenness and independently adjusting the compression amount of each disc spring, so that the electric pile meets the pressure uniformity requirement while reaching the target initial assembly pressure. And in the operation period, pressure data are continuously monitored and compared with the operation target pressure, the disc spring compression amount is dynamically adjusted, and the pressure is stably maintained within the preset deviation range. And under the dynamic working conditions such as starting and stopping, heating, cooling and rapid load changing, a corresponding pressure control strategy is selected according to the temperature or load change rate, and the target pressure is adjusted in real time. And life evaluation is realized in combination with the compensation stroke and the action frequency, and self-adaptive correction is performed on the operation target pressure when early warning is triggered. The operation efficiency, the reliability and the service life of the electrolytic cell are improved.

The invention discloses a pressure management method and device for a closed air spring air storage tank and an equipment readable storage medium. The pressure upper limit value PH and the pressure lower limit value PL of the air storage tank corresponding to each vehicle body height grade are pre-determined; when a suspension height adjusting request is received, the current real-time pressure value Ptank of the gas storage tank is updated and recorded, then the Ptank is compared with the PH and PL corresponding to the current height level of the vehicle, and corresponding inflation and deflation management operation is executed on the gas storage tank according to the comparison result so as to respond to the suspension height adjusting request. By means of the scheme, the pressure of the air storage tank can be precisely controlled based on the pressure boundaries (PH and PL) matched with the height level of the vehicle body, it is ensured that the pressure of the air storage tank is always in a reasonable interval matched with the current height level in the suspension height adjusting process, the situation that the adjusting efficiency of a traditional closed air suspension is low is effectively improved, the adjusting stability of the suspension is improved, and the service life of the suspension is prolonged. Therefore, the driving experience is guaranteed, and the requirements of the closed air spring system for improving the adjusting performance and the driving experience are met.

The utility model provides a fire suppression device of an energy storage system. Key assemblies such as a cabinet body, a fire extinguisher tank, a fire extinguishing control line, a pressure monitor and a pressure supplementing bottle are integrated. According to the device, through intelligent linkage of the fire monitoring device and the electric control valve, quick response and automatic fire extinguishing of a fire are achieved. Particularly, a built-in pressure monitor monitors the pressure in the fire extinguisher tank in real time, when the pressure is reduced to a preset threshold value, a pressure supplementing mechanism is automatically triggered, high-pressure gas in a pressure supplementing bottle is used for supplementing pressure for the fire extinguisher tank, and it is ensured that the fire extinguishing agent is always kept in an efficient spraying state. According to the design, the timeliness and effectiveness of fire extinguishing are improved, the service life of equipment is prolonged through intelligent pressure management, and the maintenance cost is reduced. The device is suitable for various energy storage systems such as battery energy storage stations and transformer substations, provides reliable guarantee for energy storage safety, and has the advantages of high efficiency, intelligence, safety, easy maintenance and the like.

The application discloses a system for realizing pressure management by using a pressure difference valve, comprising a fuel cell stack, an air compressor, an electrically-controlled three-way valve, an inlet stack pressure sensor, an air outlet throttle valve, a pressure difference valve, a hydrogen circulating pump and a hydrogen discharge valve; the electrically-controlled three-way valve is connected to the air outlet throttle valve after outputting air into the fuel cell stack; the pressure difference valve core pressure input is connected to the throttle valve input pipeline; the pressure difference valve is connected to a high-pressure air source; the pressure difference valve is output to the fuel cell stack; and the other input end of the pressure difference valve is connected to the hydrogen circulating pump. The application realizes dynamic adjustment of hydrogen input pressure by using the pressure difference valve, guarantees the performance consistency of different batches of products, and realizes the adjustment of hydrogen input pressure by using only one pressure difference valve, so that the system structure is simple, the pressure difference adjustment is quick and convenient, and the possibility of popularizing the use of fuel cells is improved.

A pressure management device (PMD) for direct connection to a blowout preventor stack of a managed pressure drilling system, the PMD comprising a housing, one or more chokes, and a directional valve. The directional valve has a choke position and a bypass position. When the directional valve is in the choke position, the PMD operates to divert fluid entering the housing to one or more of the chokes. When the directional valve is in the bypass position, the PMD operates to divert fluid entering the housing to bypass the chokes. The inlet and outlet of each choke may be controlled by a dual shutoff valve, to selectively permit and restrict fluid flow through each choke.

This invention discloses a multi-layer pressure-reducing visualization clamp and method for ultra-high pressure and high-temperature microscopic displacement experiments. It includes a microscopic model unit disposed within the internal cavity of a high-pressure vessel; an optical observation port is provided on the high-pressure vessel, with multiple layers of optical window units and balancing pressure chambers alternately arranged along the optical path of the observation port; overflow valves and check valves are installed on the pipelines between the internal cavity of the high-pressure vessel and the balancing pressure chambers, as well as between adjacent layers of balancing pressure chambers; an overflow valve is also installed between the balancing pressure chambers and the external atmosphere; the overflow valves and check valves are connected in parallel, with opposite conduction directions. The core of this invention, which breaks through the pressure-bearing limit of traditional single-layer windows, lies in the construction of a fully passive, self-locking pressure management system. This system uses a multi-stage overflow valve coordinated pressure stabilization and a differential check valve chain as its core mechanical components, achieving a fully automatic and safe closed-loop pressure control system from pressure establishment and maintenance to release.

There are provided systems and methods for using partial oxidation to produce an end product from hydrocarbon gases, such as flare gas. There are provided methods and systems to minimize the amount of compression work needed for an air breathing engine reformer in a gas-to-liquid system and method by one or more of: (a) reducing the amount of nitrogen; (b) increasing back-pressure of the engine reformer from standard 1 or 2 bar, to up to 5 bar; (c) use of a turbo-expander to recover much of the compression work, thus lowering the cost, among other efficiencies, to operate a plant; and (d) utilizing an intensified synthesis loop to achieve acceptable methanol synthesis at lower overall pressure. In an embodiment, the end product is methanol.

The application relates to a gas tank pressure control system and a control method, which comprises an exhaust control unit and a pressure management unit, and is used for controlling the pressure of multiple gas tanks. The exhaust control unit comprises a Venturi air suction device, the Venturi air suction device has an exhaust passage and an air suction passage, in the multiple gas tanks, one gas tank is connected with the air suction passage through a pipeline, and the remaining gas tanks are connected with the air suction passage and the inlet section of the exhaust passage through pipelines; the pressure management unit is connected with each gas tank through a pipeline, and the pressure management unit comprises a gas catalytic device, the gas evaporated in the gas tank is discharged into the gas catalytic device, the gas catalytic device is filled with a catalyst capable of reacting with the gas, and the gas is liquefied and stored in the gas catalytic device. The application can control the pressure of the gas tank, solves the problems of gas tank pressure overflow due to excessive pressure or gas tank pressure being too low to discharge.

The invention discloses an on-line full-detection pressure management system for the overall sealing performance of a pressure cooker. The method comprises the following steps: carrying out constant-current inflation to enable pressure overshoot to generate damped oscillation, and solving an equivalent volume by utilizing a simultaneous equation of an overshoot peak value and an oscillation period; calculating the second-order curvature fidelity Cf and Cflt of the pressure-time curve in a passive attenuation section when the gas source is closed; and 1.15, determining that the product is qualified. The system only comprises a constant flow valve, a single pressure sensor, an electromagnetic valve and an MCU, the detection period is 2.3 seconds, the misjudgment rate is 0.8%, and the hardware cost is 50 yuan / station. According to the invention, through mining pressure signal self-contained information, extremely simple online full detection of zero newly added sensors and zero black box algorithm is realized, technical stacking defects in the prior art are avoided, and detection performance and economical efficiency are both improved in order of magnitude.

A method of managing pressure in a wellbore having an annulus defined between a wall of the wellbore and a work string that includes drill pipe, a service tool, and a lower completion, the method comprising: performing the following operations, running the work string in hole down the wellbore while maintaining an annulus pressure while maintaining a hydrostatic pressure within the work string above a valve of the service tool, wherein the valve is configured to pressurize the annulus without pressurizing the work string.

A method can include connecting an apparatus between a pump and a standpipe, pumping fluid to the standpipe through a main flow line of the apparatus having a mass flowmeter connected therein, and pumping the fluid through a bypass flow line of the apparatus having another mass flowmeter connected therein to a return flow line upstream of a choke manifold, without the fluid flowing through the standpipe. A flow measurement and diversion apparatus can include an inlet connected to a pump, an outlet connected to a standpipe, and another outlet connected to a return flow line, a main flow line connected between the inlet and one outlet, and a mass flowmeter connected in the main flow line, and a bypass flow line connected between the inlet and the other outlet, and another mass flowmeter connected in the bypass flow line.

A processor includes one or more circuits to determine that a measurement of a pressure of a liquid-phase of a refrigerant in a high pressure portion of a cooling loop exceeds a first threshold and to determine that a temperature associated with one or more cold plates associated with the cooling loop is below a second threshold. The processor is to enable a pressure control system of an in-rack refrigerant distribution unit (RDU) including a pressure management valve to provide pressure of the liquid-phase of the refrigerant from the high pressure portion of the cooling loop to a low pressure portion of the cooling loop to cause a pressure-drop, before an expansion valve, for the liquid-phase of the refrigerant.