1303results about "Fluid handling accessories" patented technology

The invention relates to an industrial gas tank storage place early warning method and system. The method comprises the following steps: acquiring image time sequence data at least representing temperature field distribution of a target monitoring area, generating a temperature image sequence, determining area temperature change characteristics and tank body surface reflection characteristics in the area, and generating reflection area probability distribution of the target monitoring area to determine initial gas leakage probability data of the target monitoring area; generating baseline feature data at least representing background thermal field distribution of the target monitoring area; and performing association processing on the initial gas leakage probability data and the baseline feature data to generate fusion time sequence features and determine a gas leakage diffusion weight so as to correct the initial gas leakage probability data to obtain corrected gas leakage probability data. By adopting the method, the gas leakage probability can be accurately judged by comprehensively utilizing temperature field time sequence information, tank body surface reflection characteristics and background thermal field distribution characteristics under the condition of a complex background thermal field, so that early warning is realized.

A fluid storage and supply device comprising a cryogenic reservoir for storing liquefied fluid, a withdrawing circuit comprising a first withdrawing pipe having a first upstream end connected to the upper part of the reservoir and a second downstream end intended to be connected to a user member, the first withdrawing pipe comprising a first heating heat exchanger situated outside the reservoir and a second heating heat exchanger situated inside the reservoir, the withdrawing circuit comprising a set of valve(s) configured to ensure the passage of a flow of fluid circulating from the first end towards the second end by passing through the first heat exchanger and then through the second heat exchanger or by passing solely through the first heat exchanger without passing through the second heat exchanger, characterized in that the device further comprises a system for pressurizing the reservoir comprising a pressurizing pipe separate from the withdrawing circuit and comprising two ends respectively connected to the upper and lower parts of the reservoir, a vaporizing heat exchanger and a set of valve(s) configured to allow the withdrawal of liquid from the reservoir, the heating thereof in the vaporizing heat exchanger and the reintroduction thereof into the reservoir.

The present disclosure provides systems and methods for monitoring for a stuck valve. Various temperature and pressure sensors are used to monitor for a stuck valve in one or more tanks of hydrogen gas.

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

An outlet assembly for hybrid pressure and flow regulation includes a first orifice of a first size, a second orifice of a second size that is larger than the first size, and a mechanism that automatically moves the first orifice between a first position, a second position, and a third position. When the first orifice is in the first position, the flow of gas passes through the first orifice, which regulates a flow rate of the flow of gas through the second orifice. When the first orifice is in the second position, the flow of gas primarily bypasses the first orifice and flows through the second orifice with a first specific flow rate. When the first orifice is in the third position, the flow of gas primarily bypasses the first orifice and flows through the second orifice with a second specific flow rate.

A hydrogen gas supply apparatus according to one aspect of the present invention includes a compressor configured to compress hydrogen gas and supply the hydrogen gas compressed to a pressure accumulator which accumulates the hydrogen gas, an adsorption column disposed between the discharge port of the compressor and the pressure accumulator, and configured to include an adsorbent for adsorbing impurities in the hydrogen gas discharged from the compressor, and a plurality of valves disposed at the gas inlet / outlet port side of the adsorption column, being at a discharge port side of the compressor, and configured to be able to seal the adsorption column, wherein the space in the adsorption column is sealed using the plurality of valves such that the inside of the adsorption column is maintained to have a high pressure by the hydrogen gas compressed in the case where the compressor is stopped.

The invention relates to a method for determining a maximum flow rate setpoint for emptying a pressurised gas tank for a mobile or stationary apparatus with a view to controlling the temperature of the tank during the emptying thereof, the determination method comprising the following steps: - measuring the temperature outside the tank and providing a value (Te) for the temperature measured outside the tank, - measuring the temperature inside the tank and providing a value (Ti) for the temperature measured inside the tank, - measuring the pressure inside the tank and providing a value (Pi) for the pressure measured inside the tank.

The invention relates to a cryogenic fluid transfer device comprising a first tank storing a cryogenic fluid, a second cryogenic receiving tank, a fluid transfer circuit connecting the tanks and comprising a first pipe that connects the upper parts of the first and second tanks and has a first valve, a second pipe that connects the lower part of the first tank to the second cryogenic tank and has a pump, the pump and the first valve being configured to place the upper parts of the first and second tanks in fluidic communication, the first pipe comprising a bypass portion equipped with a heater and a set of one or more valves configured to make it possible to modify the temperature of the flow of gas transferred from the second cryogenic tank to the first tank via the first pipe.

The invention discloses a safety monitoring system and monitoring method for a hydrogen storage device, and relates to the technical field of hydrogen storage, and the system comprises an energy supply module which supplies power to a data collection device through an intelligent power management system; the data acquisition module is used for collecting real-time operation data from a sensor of the hydrogen storage device; the intelligent analysis module is used for performing real-time analysis on the collected data based on a machine learning algorithm, establishing a safety risk assessment model and obtaining a risk development trend; the early warning control module is used for judging whether abnormity occurs or not based on the risk development trend; and the remote monitoring module communicates with the subsystems through a network and provides remote data monitoring. According to the method, key data of the hydrogen storage device are collected in real time, intelligent analysis is conducted through machine learning, environment changes are monitored in real time, safety risks are recognized in advance, leakage and pressure anomalies are recognized through deep learning and an anomaly detection algorithm, the risk development trend is predicted, and safe operation of equipment is guaranteed.

The invention relates to the technical field of hydrogen energy storage, in particular to an underground hydrogen storage system, which is characterized in that a hydrogen storage sensing module and a processing module are integrated in the system, a multi-input multi-output monitoring channel is constructed by using array type electrode nodes, and the processing module constructs a dual-drive prediction model through superposition of a physical state space and a neural network to obtain reference hybrid prediction output; generating a virtual sample set by using random sampling to construct a dynamic random tolerance envelope band; and finally, leakage is judged according to the permeability of the envelope band according to the actually measured signal. According to the invention, the problem of high false alarm rate of the system due to the fact that in-pipe nonlinear background triboelectric charge noise covers tiny leakage characteristics under a fluctuating power supply charging working condition is effectively solved; millisecond-level self-adaptive accurate diagnosis of the air tightness of the pipeline in a complex dynamic environment is realized, and the detection capability of weak leakage signals is remarkably improved while electromagnetic interference is filtered out.

The invention relates to the field of natural gas industry, in particular to a marine LNG filling system and a filling method.The marine LNG filling system comprises a storage system, a filling system, a monitoring system and a data acquisition system, the storage system is used for storing liquefied natural gas, and the filling system is used for filling a fuel cabin of a ship with the liquefied natural gas; the monitoring system is used for controlling the filling process; and the data acquisition system is used for acquiring environmental data of a filling area and data of the filling system to provide a judgment reference for the monitoring system. By adopting the technical scheme, the environmental data and the filling system data acquired by the data acquisition system provide a judgment reference for the monitoring system, so that the intelligent degree of the monitoring system is greatly improved, and the problem that the monitoring system cannot respond in time due to sudden environmental change is avoided.

The invention relates to the technical field of high-pressure hydrogen storage of hydrogen fuel cell automobiles, and provides a high-pressure hydrogen storage bottle opening combination valve with a streamline runner and a control method. The combination valve integrates a high-pressure stop valve, a two-way flow regulating valve, a filter and a pressure / temperature / flow sensor, an air supply channel, an air inflation channel, a discharge channel and a cooling channel are designed, and the air supply channel and the air inflation channel are provided with a common rail type channel. A pilot-operated pressure reducing valve and a main runner bidirectional flow regulating valve are additionally arranged on the gas supply channel to form a two-stage pressure reducing system, so that the pressure and flow of hydrogen at an outlet are effectively limited, and the hydrogen is safely conveyed to a fuel cell; a redundant one-way valve is additionally arranged on an inflation channel to achieve rapid filling. Flow resistance and turbulent flow dissipation are remarkably reduced through a streamline channel, a sealing interface is reduced through modular integration, actuation response and power density are improved, and safety and stability of pressure reduction gas supply and high-pressure filling working conditions, intrinsic safety of the system and reliability of the whole life cycle are ensured.

The invention relates to a storage cryostat (2) for liquid helium (7), suitable for transferring liquid helium (7) from the storage cryostat (2) into an application cryostat (3), wherein the storage cryostat (2) comprises: - a vacuum-insulated helium vessel (6) for liquid helium (7), the helium vessel (6) having a vertical height HHB that can be filled with liquid helium (7), - a transfer line (4) for liquid helium (7), having an inlet opening (20) which opens into a lower region of the helium vessel (6), in particular into a lower fifth of the helium vessel (6), and - a convection-suppression system (9) which is arranged within the helium vessel (6) and impedes vertical convection of liquid helium (7) in the helium vessel (6), characterised in that the convection-suppression system (9) is formed in the helium vessel (6) over a height interval (IKS) with a vertical height HKS, where HKS ≥ 0.50 × HHB, and in that the convection-suppression system (9) impedes the vertical convection of liquid helium (7) in the helium vessel (6) over the region of the height interval (IKS) of the convection-suppression system (9). The invention provides a storage cryostat that enables simple and rapid transfer of liquid helium from the storage cryostat into the application cryostat, with minimised helium losses.

According to the carbon dioxide oil displacement tank capable of automatically adjusting the pressure, during daily storage, the change speed and amplitude of the pressure in the tank are maximum, so that the stability of equipment can be influenced, an air bag is arranged in a third air cavity, and when the pressure in the third air cavity changes, the air bag is closed, so that the stability of the equipment is improved. The air bag can be matched with the third electric valve and the second electric valve to release or suck air so as to adjust pressure change, the speed and amplitude of the pressure change are slowed down to be within a controllable range, and therefore the stability of air stored in the device is improved, the interior of the tank body is divided into three storage units, and the storage effect is good. The third air cavity, the second air cavity and the first air cavity are sequentially arranged from inside to outside, when the first air cavity leaks, the third air cavity and the second air cavity are in a closed state and do not leak with the first air cavity at the same time, the capacity of the first air cavity is the minimum, the capacity of the third air cavity is the maximum, and if the first air cavity leaks, the loss can be reduced to the minimum. Therefore, the safety of the device can be improved.

A regulating valve device for a fluid cylinder includes a shut off valve having a ball tappet that actuates the shut off valve. A lever has a cam surface that interacts with the ball tappet as the lever is rotated to translate the ball tappet linearly and actuate the shut off valve. The lever is rotatable from a first valve closed position through a valve open position to a second valve closed position such that the valve open position is intermediate of the first and second valve closed positions. A pressure or flow regulating valve is downstream of the shut off valve. A handwheel is operatively connected to the pressure or flow regulating valve to adjust an outlet pressure of the pressure or flow regulating valve. The handwheel has an axis of operation that is offset from a longitudinal axis of the fluid cylinder by an acute angle.

A system and method for high rate liquid hydrogen tank filling is provided. The flexible, pump-based filling system can achieve high fill rate of liquid hydrogen in excess of 100 kg per minute and accommodate maximum delivery pressures. The present system and method further includes recovery and re-liquefaction of displaced and flash generated tank vapors.

The invention relates to a fuel gas tank (1) for a fuel gas tank system, said fuel gas tank comprising: a storage volume (3) which is enclosed by a wall (2) and can be filled with fuel gas via a tank line (4) having an integrated tank valve (5); and a temperature sensor (6) for sensing the temperature in the fuel gas tank (1), the temperature sensor (6) being located outside the storage volume (3) and being thermally connected to the storage volume (3) via a thermal conductor (7) projecting into the storage volume (3). The invention also relates to a fuel gas tank system comprising at least one fuel gas tank (1) according to the invention.

The invention relates to a gas cylinder filling method, an early warning method, an assessment method, a system and a medium in the technical field of industrial safety production. The gas cylinder filling safety assessment method based on voice analysis comprises the following steps: acquiring acoustic data of an operator; and analyzing the acoustic data and calculating to obtain a knowledge proficiency score Spro. And acoustic data are extracted, and a psychological quality score Semo is obtained through calculation. Collecting motion posture data of the gas cylinder and calculating to obtain an operation stability score Ssta; and carrying out weighted fusion on the Stro, the Semo and the Ssta to obtain an assessment score Stotal. And setting a score line based on the assessment requirement, and if the Stotal is greater than or equal to the score line, determining that the operator passes the assessment. According to the invention, through innovative multi-mode assessment, the ability of the operator is changed from feeling-based ability to data-based ability, the final result can be known, and the specific weak link can be known according to the specific condition of each link, so that the psychological quality and emergency response ability of the operator can be effectively assessed.

The invention discloses a small modular hydrogen liquefaction and intelligent filling system and method. The system is integrated in a container module and comprises a pretreatment purification module connected with a raw material hydrogen source and used for purifying raw material hydrogen, a liquefaction module connected with the pretreatment purification module and used for cooling and liquefying the purified hydrogen, and a liquid hydrogen storage and transportation and filling module connected with the liquefaction module and used for storing liquefied hydrogen, the central control module is respectively connected with the pretreatment purification module, the liquefaction module and the liquid hydrogen storage and transportation and filling module and is used for controlling all the modules. According to the system, rapid deployment is achieved through modular design, low energy consumption and low cost are achieved by optimizing operation through a prediction algorithm, the system is particularly suitable for distributed hydrogen production scenes and small and medium-sized hydrogen refueling stations, and the problems that an existing large liquefying device is not flexible and a traditional refueling station depends on external hydrogen supply are effectively solved.

Hydrogen is produced by electrolysis of water using electricity generated from a renewable energy source such as wind and / or solar radiation, compressed in a multistage compression system and consumed in at least one downstream process. Supply of hydrogen to the downstream process(es) fluctuates with demand and / or the availability of the renewable energy source. In order to accommodate such fluctuations, excess hydrogen is stored during periods when production of hydrogen exceeds that required by the downstream process(es) so that, during periods when demand exceeds production, hydrogen is removed from storage and, after suitable pressure reduction, fed to the downstream process(es) via a stage of the multistage compression system.

The present invention relates to a subsea storage system for storing a water miscible storage fluid and methods related thereto.

The invention relates to a system for full-supercooling large-flow liquid methane filling and a using method of the system. The full-supercooling large-flow liquid methane filling system is stable, reliable, high in automation degree, capable of dynamically adjusting the supercooling temperature and flow of liquid methane and high in accuracy, and comprises a storage box, a pressurization module, a recovery module, a methane filling module, a control module and a nitrogen filling module, and the pressurization module comprises a methane pressurization tank; the methane filling module comprises a methane filling tank, the nitrogen filling module comprises a nitrogen filling tank and a subcooler, the recovery module comprises a methane recovery tank, and the control module pressurizes the methane recovery tank and the methane filling tank by controlling the pressurization module and adjusts the filling flow and temperature of methane to prevent condensation by controlling the methane filling module and the nitrogen filling module. Flow stabilization and backflow are carried out by controlling the methane filling module and the recovery module.

A hydrogen supply system includes a detachable hydrogen tank, a hydrogen consumption apparatus that consumes hydrogen in the hydrogen tank, and a control device. The hydrogen consumption apparatus includes a detachment and attachment mechanism that detaches the hydrogen tank from the hydrogen consumption apparatus and attaches the hydrogen tank to the hydrogen consumption apparatus. The detachment and attachment mechanism includes a motor that controls detachment and attachment of the hydrogen tank from and to the hydrogen consumption apparatus. When a torque value of the motor exceeds a threshold during the control of the detachment and attachment of the hydrogen tank from and to the hydrogen consumption apparatus, the control device returns the hydrogen tank to a position where a moving process in which the threshold being exceeded is detected is started.

A valve assembly includes a body and a plurality of valve subassemblies. The valve subassemblies include a safety valve having an inlet and another valve. The body has a gas flow passage including a first flow passage connected to a gas tank and a second flow passage connected to an external device, and an integrated attachment hole that communicates with each of the first flow passage and the second flow passage. The integrated attachment hole includes a first attachment hole that is open in an outer surface of the body and is configured such that the safety valve is attached, and a second attachment hole that is open in a bottom surface of the first attachment hole and is configured such that the other valve is attached. The inlet is configured to communicate with the first flow passage regardless of an open or closed state of the other valve.

The invention provides a pressurization storage tank and a pressure filling tank truck with the pressurization storage tank. The pressurization storage tank comprises a tank body, a liquid level detection device, a pressurization pipeline, a pressurizer and a liquid outlet valve. The liquid level detection device is used for detecting liquid level information in the tank body; one end of each pressurizing pipeline communicates with the bottom of an inner cavity of the tank body, the other end of each pressurizing pipeline communicates with the top of the inner cavity of the tank body, and the multiple pressurizing pipelines are arranged in parallel; the superchargers are communicated with the supercharging pipelines, and each supercharging pipeline is provided with one supercharger; the liquid outlet valves are communicated with the pressurizing pipelines and located on the upstream of the pressurizer, and each pressurizing pipeline is provided with one liquid outlet valve. When a worker uses the pressurizing storage tank to unload liquid, the superchargers with different numbers or different powers can be started and stopped according to the liquid level information detected by the liquid level detection device, so that the self-adaptive matching between the pressurizing capacity and the size of a gas phase space in the tank body is realized, and the whole liquid unloading process is more stable and efficient.

The invention relates to a method of operating and / or fueling a compressed gas supply system (34) having at least two compressed gas tanks (15, 16, 17, 18, 19) connected to an anode path (2) of a fuel cell system (1).To increase thermal safety during operation and / or fueling of the compressed gas supply system (34), the valve devices (21, 22, 23, 24, 25) assigned to the pressure tanks (15, 16, 17, 18, 19), which comprise a filling path with an actively switchable filling valve and a discharge path with an actively switchable discharge valve for each of the compressed gas tanks (15, 16, 17, 18, 19) are individually actuated via an electronic control unit, which is connected to a sensor device having at least one sensor, which senses a current temperature in the respective valve installation (21, 22, 23, 24, 25).

This invention relates to a fluid sealing device comprising a sealing member comprising a first surface and an opposite second surface. A first region of the first surface for forming a first seal about an aperture of a process component containing a fluid, and an inner region of the first surface to be exposed to the fluid via the process component aperture. A restraining member providing a support surface facing the second surface, a perimeter portion of the restraining member interfacing with a first region of the second surface, the first regions of the first and second surfaces corresponding with a first region of the sealing member. An inner region of the second surface spaced from the support surface to form a cavity between the inner region of the second surface and the supporting surface at least in an unpressurised condition. The inner regions of the first and second surfaces corresponding with an inner region of the sealing member, the inner region of the sealing member moveable towards and away from the support surface under action of a pressure of the fluid on the inner region of the first surface to provide an indication of the pressure.

The invention relates to a zero-loss methane propellant supercooling filling system and method, and the system comprises a liquid nitrogen supply unit, a methane supply unit, a supercooling methane storage tank, a heat exchange pipeline unit and a temperature control unit; the heat exchange pipeline unit comprises a first heat exchanger, a second heat exchanger, a third heat exchanger and a separation and recovery module; the liquid nitrogen supply unit is connected with the cold end of the first heat exchanger. The cold ends of the first heat exchanger, the second heat exchanger and the third heat exchanger are sequentially connected in series. Methane output by the methane supply unit exchanges heat with the third heat exchanger and then is input into the supercooled methane storage tank; methane output by the exhaust end of the supercooled methane storage tank exchanges heat with the second heat exchanger and then is input into the separation and recovery module; and the separation and recovery module is connected with the supercooled methane storage tank and the methane supply unit and is used for converging the recovered methane into the supercooled methane storage tank and / or returning the recovered methane to the methane supply unit. According to the method, freezing in methane supercooling filling is effectively avoided, and lossless filling is achieved.

Disclosed is a method for whole filling process supervision of smart gas and an IoT system, implemented by a gas company management platform of the IoT system, comprising: obtaining monitoring data of a gas filling container; obtaining usage information of the gas filling container; determining a usage index of the gas filling container, and sending the usage index to a gas user platform; determining a target gas user and sending container replacement information to the target gas user, and sending a parameter adjustment instruction to an electronic monitoring device of the gas filling container corresponding to the target gas user; determining whether the monitoring data and / or the usage information satisfy a preset data condition; and in response to determining that the monitoring data and / or the usage information satisfy the preset data condition, adjusting the target gas user, interacting with a public user platform, and displaying an adjusted target gas user.

A hydrogen supply system including: a plurality of hydrogen tanks that is attachable and detachable; a hydrogen consumption device that consumes hydrogen of the hydrogen tanks; and a control device is provided. The hydrogen consumption device includes an attaching-detaching mechanism including a plurality of motors that controls attaching and detaching of the hydrogen tanks with respect to the hydrogen consumption device, the motors corresponding to the attaching and detaching of the respective hydrogen tanks. The control device disposes, based on a temperature of each of the motors, a hydrogen tank of the hydrogen tanks to a hydrogen supply start position at which the hydrogen tank and the hydrogen consumption device are connected in a state in which the hydrogen tank is allowed to supply hydrogen to the hydrogen consumption device, or disposes the hydrogen tank to a hydrogen supply standby position.