[Problem] When configuring a device for storing and supplying fluid, each components such as vessels, valves/pipes and the like, are placed independently outside a vessel that stores the fluid, and even if these components are small, the volume of the area between the components cannot be effectively used because each of them occupies the surrounding area, and when the total size of the device is limited, it is difficult to ensure a sufficient volume of the vessel that stores the fluid. The present invention provides a design for a configuration of a mechanism consisting of components such as valves/pipes and the like, that functions for storing and exhausting the fluid inside the storage vessel to innovatively improve the volume usage efficiency of the device.

A pressure vessel made of two thin-walled, closed-end tube sections joined at a central hub that encircles the open ends of the two closed-end tube sections, with a plurality of radial bolts attaching the sections together. The central hub has an O-ring groove in which an O-ring rests, providing a seal between the interior of the pressure vessel and the outside. The inner wall of the central hub may have radially thin and radially thick sections to distribute and minimize weight without sacrificing strength. The assembly may be attached to a mounting surface through a dovetail mount on the central hub.

The present disclosure relates to a valve unit for a fuel supply system which is preferably adapted to supply a fuel cell system with fuel, comprising: at least one temperature detector, at least one pressure detector, and a safety valve integrated into a line section, wherein the safety valve can be adjusted between an open position, in which gas is able to flow through the line section, and a closed position, in which gas is not able to flow through the line section, wherein the temperature detector and the pressure detector are so disposed that they are able to detect a temperature and a pressure of the gas flowing through the line section in a state in which the gas is present at the closed safety valve in such a manner that it exerts pressure. The present disclosure relates further to an on-tank valve which can have all the features described in relation to the valve unit and differs from the valve unit only in that it is able to be mounted directly on a gas pressure tank. The present disclosure relates further to a gas pressure tank system for storing fuel, comprising: at least one gas pressure tank and a valve unit. Finally, the present disclosure relates to a method for detecting a possible leakage in a fuel supply system, and to a valve assembly.

The present disclosure provides systems and methods for refilling fluid containers. A fluid container may include a bottle and a valve assembly. The valve assembly may include two valves and be configured to engage with the bottle and a filling head or dispensing head. A system is configured to provide pressurized fluid to the refillable container, monitor filling, determine when to stop filling, and determine how much fluid was provided. The valve assembly may include a float mechanism coupled to one of the valves of the valve assembly to ensure fluid flow is stopped when the fluid container is full. The fluid, which can include carbon dioxide, is stored in a storage tank. A flow system provides the fluid to a filling head, which engages with the fluid container. The flow system includes a transfer pump, valves, and sensors configured to provide the fluid to the filling head.

The present invention provides fluid storage and dispensing tanks and methods for storing reactive fluids, such as component fluids for two-component adhesives, foams, and sealants. The tanks contain a reactive fluid for storage until the fluid is desired to be dispensed. The tank includes a subject fluid storage chamber that contains the subject fluid independent of any propellants or other fluids or gases. When the tank is desired to be used, a propellant, such as a volatile propellant or a compressed gas (e.g. compressed air) are introduced directly into or around the storage chamber to facilitate dispensing the subject fluid from the tank. The tank may include a propellant storage chamber inside the canister body and adjacent to the subject fluid storage chamber. The propellant chamber is selectively punctured when the tank is to be used. The tank may include a flexible bladder defining the storage chamber.

A pressure vessel with a flushing lance, a transport container with pressure vessels and methods of filling and producing this pressure vessel are disclosed which comprises an inner vessel, an outer layer applied on the inner vessel, a valve connection piece arranged on one of the terminal caps of the inner vessel and a hollow flushing lance that is open to the outside and is guided through the valve connection piece and held therein in a sealing manner, wherein the flushing lance protrudes into the storage volume and is provided with a perforation along its entire length up to a first end of the flushing lance facing the terminal cap that lies opposite the valve connection piece in the storage volume for a gas exchange with the storage volume, wherein the flushing lance extends to the terminal cap which lies opposite the valve connection piece.

An apparatus for controlling a fuel tank according to an embodiment of the present disclosure may include a fuel tank having a plurality of volumes, and a controller that controls a charging state of a fuel charged in the fuel tank and selectively controls use of the fuel charged in the plurality of volumes based on an amount of the fuel used and a state of the fuel tank.

A storage system for storing a cryogenic medium, in particular, for storing hydrogen. The storage system includes storage container for receiving the cryogenic medium, at least one pipe projecting from outside the storage container into the storage container, and a shut-off valve in fluidic communication with the at least one pipe. The at least one pipe is closed at an end thereof facing away from the storage container and is open at another end thereof located in the storage container. The shut-off valve is moveable between an open operating state in which an inner space of the at least one pipe is in fluidic communication with an inner space of the storage container, and a closed operating state in which the inner space of the at least pipe is not in fluidic communication with the inner space of the storage container.

A method for filling a high-pressure gas accumulator from a reservoir is provided, comprising: removing the gas from the reservoir, transporting the gas through a gas line to a jet pump coupled to the interior of the high-pressure gas accumulator, and generating a ring flow guided along the inside of the wall of the high-pressure gas accumulator. A high-pressure gas accumulator that is suitable for carrying out the method and has a casing having a heat-sensitive layer on the inside, and has an inlet opening that traverses the casing and the layer, wherein a jet pump coupled to the inlet opening is arranged within the casing, and wherein the jet pump is oriented to generate a guided flow to the wall of the casing opposite the jet pump with deflection therein into a ring flow flowing along the heat-sensitive layer.

Disclosed is a liquefied hydrogen filling apparatus configured such that connection between liquefied hydrogen injection lines is performed stepwise, whereby there is no concern of leakage of liquefied hydrogen the moment the liquefied hydrogen injection lines are connected to each other, and therefore it is possible to guarantee safety and to prevent loss of fuel. In addition, the state of connection between the liquefied hydrogen injection lines is securely maintained, whereby there is no concern of separation due to internal pressure at the time of filling or other external force, and therefore it is possible to perform safe filling.