A gaseous hydrogen storage system may include a primary container including a metal sidewall and a metal dome. The primary container may be configured to retain gaseous hydrogen. A portion of the primary container, such as the metal sidewall may be covered with a composite material layer. The metal sidewall and the metal dome may be constructed from carbon steel, stainless steel, a nickel-based steel, and combinations thereof.

[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 liquified air storage system can include a container assembly. The container assembly can be disposed on a base. The container assembly can have an interior portion and an exterior portion. The interior portion can include a reinforced concrete layer and a steel liner. The exterior portion can be disposed adjacent to the interior portion, the exterior portion including prestressed wire. A method of assembling a liquified air storage system can include assembling an interior portion of a container assembly. The interior portion can have a reinforced concrete layer and a steel liner. Next, an exterior portion of the container assembly can be assembled on the interior portion. The exterior portion can include a composite material and prestressed wires. The exterior portion can be covered with an insulation layer.

A high-pressure tank includes an assembly of a pipe split body having a pipe liner and a pipe reinforcement layer covering an outer circumferential surface of the pipe liner, first dome split body having a first dome liner and a first dome reinforcement layer covering an outer circumferential surface of the first dome liner, and second dome split body having a second dome liner and a second dome reinforcement layer covering an outer circumferential surface of the second dome liner. The pipe split body and the first dome split body are assembled such that the first dome liner is located in the outer portion of the high-pressure tank relative to the pipe liner. The pipe split body and the second dome split body are assembled such that the second dome liner is located in the outer portion of the high-pressure tank relative to the pipe liner.

An end cap holder may include a base block and a holding block. The base block may be configured to provide an end cap, which may be at a nozzle of the gas cylinder, with a torque for combining/separating the end cap with/from the nozzle. An angle correction groove may be formed at a first surface of the base block oriented toward the end cap. The holding block may be rotatably receivable in the angle correction groove to hold the end cap. The holding block may selectively make point contact with the base block to transmit the torque of the base block to the end cap. Thus, the holding block may accurately hold the end cap tilted to a vertical axis or a horizontal axis.

An apparatus for fabricating an internally finned pressure vessel includes a plurality of positioning discs, each of the positioning discs defining a plurality of circumferentially spaced slots extending radially into the positioning disc from a perimeter thereof, and one or more rods extending through the plurality of positioning discs, the plurality of positioning discs being held in axial alignment by the one or more rods. A method of fabricating the internally finned pressure vessel includes providing the apparatus, loading a plurality of fins into the slots of the positioning discs, inserting the apparatus containing the plurality of fins into a pressure vessel, attaching the plurality of fins to the pressure vessel by a brazing process, and removing the apparatus from the pressure vessel.

The present disclosure provides a carbon-fibre composite high-pressure hydrogen storage tank and a manufacturing process thereof. The hydrogen storage tank includes a tank body, wherein a gas guide port is formed in one side of the tank body, a reinforcing member for improving the strength of the tank body is arranged in an inner cavity of the tank body, a side end of the reinforcing member is fixedly connected to an inner wall of the tank body, and the tank body and the reinforcing member are all made of the carbon-fibre composite. The present disclosure can improve the whole strength and rigidity of the hydrogen storage tank and ensure the safer and more reliable hydrogen storage tank under a high pressure.

A system and a method for liquefied fuel storage are provided. The system includes a first module including a first outer vessel wall and a cryotank, a second module including a second outer vessel wall and a submerged pump at partially inside the second outer vessel wall, and a third module including a third outer vessel wall. The first, the second, and the third outer vessel walls are connected to provide an enclosure as an outer vessel.

A method for manufacturing a tank unit includes performing a pressure resistance inspection on each of a plurality of high pressure tanks before connecting the high pressure tanks, and connecting a gas flow path to the high pressure tanks that have passed the pressure resistance inspection.

A boss configured for attachment to a pressure vessel includes a first bore therein and a bearing disposed at least partially within the first bore. A system for supporting a pressure vessel on a vessel mount includes a boss, a bearing, and an attachment element. The boss is attached to the pressure vessel and has a first bore therein. The bearing is disposed at least partially within the first bore and has a second bore therethrough. The attachment element is configured to be affixed to the vessel mount, wherein a portion of the attachment element extends through the second bore and is slidable within the first and second bores substantially along a longitudinal axis of the pressure vessel. A method is described for supporting a pressure vessel on a vessel mount.