792results about "Fluid transferred" patented technology

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 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.

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 belongs to the technical field of hydrogen energy, and particularly relates to a solid hydrogen storage system with two charging and discharging ends and a working method.The solid hydrogen storage system comprises at least two independent solid hydrogen storage units, and each solid hydrogen storage unit independently communicates with an upstream hydrogen supply pipeline through a first valve set and independently communicates with a downstream hydrogen using pipeline through a second valve set; each solid hydrogen storage unit is selectively communicated with the thermal circulation loop or the cold circulation loop through a third valve group; the first valve group, the second valve group and the third valve group are controlled, so that when the upstream hydrogen supply pipeline has a hydrogen supply demand and the downstream hydrogen use pipeline has a hydrogen use demand, the first solid hydrogen storage unit is configured to be in a hydrogen charging mode, and meanwhile, the second solid hydrogen storage unit is configured to be in a hydrogen discharging mode; the solid hydrogen storage unit in the hydrogen charging mode is communicated with the upstream hydrogen supply pipeline and the cold circulation loop for charging hydrogen, and the solid hydrogen storage unit in the hydrogen discharging mode is communicated with the downstream hydrogen supply pipeline and the hot circulation loop for discharging hydrogen.

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 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 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.

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.

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 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.

The invention discloses a hydrogen storage reactor based on synergistic heat management of a phase change material and a spiral heat exchange tube. The hydrogen storage reactor comprises an outer cylinder, a middle cylinder, an inner cylinder, a sealing cover and the spiral heat exchange tube. The outer cylinder, the middle cylinder and the inner cylinder divide the hydrogen storage reactor into three layers from inside to outside, and the inner layer and the outer layer are filled with phase change materials; the spiral heat exchange tube is arranged on the middle layer, and metal hydride is filled around the spiral heat exchange tube; in the hydrogen storage process, hydrogen flows into the middle layer of the reactor from an inlet in the center of the top end of the reactor and reacts with metal hydride; heat exchange fluid flows into the spiral heat exchange tube from a top inlet of the reactor, absorbs heat generated by reaction and flows out from a bottom outlet of the reactor; the phase change materials filled in the inner layer and the outer layer absorb heat generated by reaction and store the heat. The spiral heat exchange pipe is adopted for accelerating heat exchange, and the hydrogen storage and release rate is increased; the phase change material can store part of heat generated by the hydrogen storage reaction and release the heat during hydrogen release, the interlayer type arrangement can increase the heat exchange area, and the heat storage and release efficiency is improved.

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.

The present invention relates to a system and method for regasification of liquefied gas for vessels, which generates power by recovering cold heat discarded in regasification of liquefied gas to improve energy efficiency. The liquefied-gas regasification system for vessels includes: a vaporizer gasifying liquefied gas into a regasified gas through heat exchange with a first heating medium; a trim heater heating the regasified gas to a temperature required for a gas consumer through heat exchange with a second heating medium when the regasified gas is delivered from the vaporizer to the gas consumer; a first cycle in which the first heating medium is circulated; and a second cycle in which the second heating medium is circulated, wherein the first cycle includes a first heat exchanger gasifying the first heating medium to be supplied to the vaporizer through heat exchange with a heat source; and an expander-generator generating power through expansion of the first heating medium gasified by the first heat exchanger, and the second cycle includes a second heat exchanger heating the second heating medium to be supplied to the trim heater through heat exchange with a heat source.

A cryogenic liquid storage system comprising an outer tank 22, and an inner tank 24 configured to hold cryogenic liquid, an isolation valve 40, and a collection chamber 26, outside the outer tank, and

The present invention relates to a boil-off gas reliquefaction system for a ship. The boil-off gas reliquefaction system for a ship according to the present invention, whereby boil-off gas generated from a liquefied natural gas (LNG) storage tank for a ship is reliquefied, comprises: a first heat exchanger for recovering cold heat from a first boil-off gas generated in the storage tank; a multi-stage compressor for compressing the boil-off gas that has passed through the heat exchanger; a high-pressure gas line for supplying high-pressure gas that is supplied from the multi-stage compressor; a low-pressure gas line for supplying the boil-off gas, which is supplied from the multi-stage compressor, as a low-pressure gas by using a decompression valve; a second heat exchanger in which heat exchange occurs between the high-pressure gas line and the low-pressure gas line downstream of the decompression valve; and a third heat exchanger by which the boil-off gas that has passed through the second heat exchanger is cooled by means of heat medium oil of a cryogenic chiller.

The application provides a temperature monitoring system for gas fuel supply, comprising a liquid storage module, a temperature monitoring module and a temperature control module; the liquid storage module comprises a liquid storage unit, the liquid storage unit is provided with a first storage space and a second storage space, the first storage space stores liquefied natural gas, the first storage space is communicated with the second storage space through a pipeline, and the pipeline is provided with a gasification valve; the temperature monitoring module comprises a first temperature probe, and the first temperature probe is used for monitoring the temperature of the liquefied natural gas in the first storage space; the temperature control module is used for receiving the temperature signal of the first temperature probe; when the temperature of the liquefied natural gas is higher than a first preset temperature, the gasification valve is opened, so that the liquefied natural gas in the first storage space enters the second storage space through the gasification valve; and when the temperature of the liquefied natural gas is lower than the first preset temperature, the gasification valve is closed. The application aims to provide a temperature monitoring system which can ensure that the temperature of liquefied natural gas is kept below the boiling point, so that the liquefied natural gas is maintained in a liquid state.

A fuel system having a hydrogen fuel tank for fueling a fuel feed and propulsion system. The fuel system having a jet pump within the hydrogen fuel tank, at least one primary pump receiving fuel from the jet pump and pressurizing fuel to an outlet path and a first fuel recirculation path configured to selectively recirculate fuel to the hydrogen fuel tank. The first fuel recirculation path is fluidly connected to the outlet path. The first fuel recirculation path includes a heat exchanger positioned within the hydrogen fuel tank to cool fuel received from at least one of the fuel feed system or a tank pressurization system. The heat exchanger and a Joule-Thomson expansion at the jet pump minimizes recirculated fuel temperature, which in combination with a selective flow recirculation rate improve the life of the primary pump downstream.

The invention relates to a fuel system (1) for supplying an aircraft (2) with hydrogen (3). The fuel system (1) comprises a first inner tank (4) and a separate second inner tank (6), each for storing hydrogen (3), and an outer tank (5) which surrounds the inner tanks (4, 6). The first inner tank (4) and the second inner tank (6) are fluidically connected, separately from one another, to at least one first supply device (7) for supplying the aircraft (2) with hydrogen (3). The invention also relates to an aircraft (2) having a fuel system (1), and to a method.

A ship has a hull, at least one double-shell tank mounted on the hull, having an inner tank storing liquefied gas and an outer tank covering the inner tank, at least one first discharge tower extending upward from the hull, at least one second discharge tower extending upward from the hull independently of the first discharge tower, a first discharge line connecting an upper portion in the inner tank and a tower interior of the first discharge tower, a second discharge line connecting the inner tank and an inter-tank region of the outer tank and a tower interior of the second discharge tower, and a pressure release device provided in the second discharge line, which is closed normally and opened when a pressure of the inter-tank region exceeds a prescribed inter-tank allowable value.

This invention discloses a method for connecting and disconnecting a hydrogen storage cylinder from a hydrogen refueling device, as well as a method for filling the cylinder with hydrogen, relating to the field of hydrogen production and refueling. The filling method includes: pushing the hydrogen storage cylinder to be filled into the gas cylinder compartment until the quick-connect male connector is installed onto the quick-connect female connector and locked in place, thus connecting the gas path and completing the connection between the hydrogen storage cylinder and the hydrogen refueling device; turning on the switch of the hydrogen production module to start the electrolyzer to produce hydrogen and fill the hydrogen storage cylinder with hydrogen; detecting that the hydrogen storage cylinder has been filled with hydrogen, turning off the hydrogen production module; pressing a button, which, through a locking and disconnecting device, pushes the opening and closing sliding sleeve to the side away from the quick-connect male connector, causing the quick-connect female connector to pop out from the quick-connect male connector and the hydrogen storage cylinder, completing the disconnection of the hydrogen storage cylinder from the hydrogen refueling device. This invention achieves automatic and rapid assembly and disassembly of the hydrogen storage cylinder and the hydrogen refueling device through the cooperation between the locking and disconnecting device and the quick-connect male and female connectors, realizing automatic hydrogen filling of the hydrogen storage cylinder.

A method for storing hydrogen in a plurality of subsea storages in a system. The system comprising an electrolyser source (100) for producing hydrogen at a source pressure; a downstream compressor (200) for compressing the hydrogen from the source pressure to a compressed higher pressure; and a plurality of storages (300) each for storing compressed hydrogen at the compressed higher pressure and each being subsea. The method comprising at least the steps of: producing hydrogen (1000) by the electrolyser source (100) at the source pressure; passing the hydrogen (2000) to the plurality of storages (300) through a bypass line (210) around the compressor (200); and storing the hydrogen (3000) in at least one of the plurality of storages (300) at a first pressure below the compressed higher pressure. A system for storing hydrogen in a plurality of subsea storages, the system comprising: an electrolyser source (100) for producing hydrogen at a source pressure; a downstream compressor (200) for compressing the hydrogen from the source pressure to a compressed higher pressure; a plurality of storages (300) each for storing compressed hydrogen at the compressed higher pressure and each being subsea; and a controller (400) for controlling the electrolyser source (100), the downstream compressor (200), and valves (310) to the plurality of storages (300). The controller (400) is configured for controlling the system in, at least, two alternative ways: A) passing the hydrogen, produced by the electrolyser source (100) at the source pressure, to the compressor (200), compressing the hydrogen by the compressor (200) to a compressed higher pressure, and passing the hydrogen, at the compressed higher pressure, from the compressor (200) to at least one of the plurality of subsea storages (300); and B) passing the hydrogen, produced by the electrolyser source (100) at the source pressure, to at least one of the plurality of storages (300), through a bypass line (210) around the compressor (200) at a first pressure below the compressed higher pressure.

There is a demand for a configuration that can flexibly respond to various needs regarding hydrogen filling. [Solution] The hydrogen filling device comprises a plurality of first connection ports connectable to a plurality of first hydrogen tanks, a common flow path, a first branch flow path connecting one end of the common flow path to each of the plurality of first connection ports, a plurality of second connection ports connectable to a plurality of second hydrogen tanks, a second branch flow path connecting the other end of the common flow path to each of the plurality of second connection ports, a plurality of first valves provided in the first branch flow path corresponding to each of the plurality of first connection ports, a plurality of second valves provided in the second branch flow path corresponding to each of the plurality of second connection ports, and a control unit capable of individually opening and closing each of the first valves and second valves, and the control unit fills hydrogen from one or more first hydrogen tanks through the first branch flow path, the common flow path, and the second branch flow path to one or more second hydrogen tanks by opening one or more first valves and one or more second valves.

An electrical control and / or monitoring system for use with a cryogenic storage vessel has an electrical component, an enclosure surrounding the electrical component, an inert volume within the enclosure between the electrical component and the enclosure, and a control system. The control system has one or more pressure sensors configured to measure the pressure of the inert volume, and one or more pressure sensors configured to measure the pressure of a cryogen and / or cryogenic liquid within the cryogenic storage vessel. The control system is configured to regulate the electrical component based on pressure data from the one or more pressure sensors configured to measure the pressure of the inert volume, and the one or more pressure sensors configured to measure the pressure of a cryogen and / or cryogenic liquid within the cryogenic storage vessel.

A system and method are provided for such a hydrogen refueling station. The system includes a cryotank for storing liquid fuel having liquid and gas phases, a pump for supplying a first flow of the liquid fuel in liquid phase from the cryotank, a heat exchanger for converting at least a portion of the first flow to gaseous fuel, a dispenser for dispensing at least a portion of the gaseous fuel to a receiving fuel tank, a refrigeration unit integrated with the heat exchanger, and a backup power unit. The refrigeration unit and the heat exchanger exchange heat with each other, and the refrigeration unit provides cooling capacity to equipment in an environment where cooling is required. The backup power unit generates electrical power by using a second flow of the liquid fuel in the gaseous or liquid phase or both.

A system for dispensing a cryogenic fluid includes a bulk tank configured to contain a supply of a cryogenic liquid, a first sump and a first liquid feed valve configured to direct liquid from the bulk tank to the first sump when in an open condition and to prevent transfer of liquid from the bulk tank to the first sump when in a closed condition. A first positive displacement pump is positioned within the first sump and configured to pump and be submerged in cryogenic liquid when the first sump contains cryogenic liquid above a predetermined liquid level within the first sump. A delivery line is in fluid communication with an outlet of the first positive displacement pump and is configured to direct cryogenic fluid from the first positive displacement pump to a use device when the first positive displacement pump is activated.

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

A gas supply device according to the disclosure includes a first pressure vessel in which liquefied gas is stored, a second pressure vessel configured to generate gas by vaporizing the liquefied gas supplied from the first pressure vessel, a liquefied gas supply path configured to allow the liquefied gas to selectively flow from the first pressure vessel toward the second pressure vessel, and a gas supply path configured to allow the gas generated in the second pressure vessel to selectively flow toward a gas utilization unit.

Method (200) for preventing or limiting icing of a pressurized gas distribution station (100), the station (100) comprising a filling line having in series one end connected to a pressurized gas source (1), a first heat exchanger (2) for cooling a gas stream from the source (1), and a distribution terminal (3) for distributing the cooled stream to a tank (4) to be filled, the distribution station (100) also comprising a bypass line (L4) from the filling line at the first heat exchanger (2), the method (200) comprising a step (S1) for transferring a relatively hot gas stream to the distribution terminal (3) via the bypass line (L4), the relatively hot gas stream being at a temperature higher than a predefined temperature at the outlet of the first heat exchanger (2). Abstract figure: Fig. 1

The invention relates to the technical field of LPG filling metering and control, in particular to an LPG filling signal processing method and system. The method comprises the following steps: acquiring a volume metering signal to form a volume metering value, converting to obtain a volume mass value, and acquiring a weighing metering signal to form a weighing sequence; according to the fact that the volume mass value is close to the target filling amount, the weighing sequence fluctuation state or the metering difference value of the volume mass value and the current weighing mass value, whether steady state obtaining operation is triggered or not is judged; after triggering, a filling execution mechanism is controlled to stop flow to form a flow stop window, sampling is carried out in the window, steady state judgment is carried out, a weighing anchor point mass value is output and a weighing mass value is formed if the steady state is established, and a retry instruction or a weighing incredible mark is output if the steady state is not established; and a filling control judgment is generated based on the volume mass value and the weighing mass value, a speed reduction or turn-off control signal is output, overfilling prevention is achieved, and an alarm or turn-off treatment instruction is output when abnormal conditions are met.