A pressure vessel includes a polymeric liner defining a fluid containment cavity and having an opening defining a port aperture extending between an inner surface and an outer surface of the polymeric liner and a rigid ring element is embedded within the polymeric liner and surrounding the port aperture. A metallic port element is disposed on the outer surface of the polymeric liner and fixed to the rigid ring element. A fiber composite material is disposed about the outer surface of the polymeric liner.

An internal casing for a pressurized fluid storage tank for a motor vehicle includes: a hollow body includes a layer made of a first polymer material; and a neck arranged on the hollow body and delimiting an opening of the hollow body, the neck receiving an interface part mounted on the neck in a sealed manner by a gasket arranged between the neck and the interface part. The neck is made of a composite material composed of a second polymer material loaded with reinforcing fibers, the composite material having a deformation resistance than that of the first polymer material. The neck is joined to the hollow body by molecular entanglement of polymer chains of the first polymer material and polymer chains of the second polymer material. Methods for manufacturing such an internal casing, and a storage tank including such an internal casing are disclosed.

The present invention relates to a device for the storage and delivery of liquid and/or gaseous media under pressure, having a media container (1) of a plastics material, preferably of polyamide, receiving the medium, at least one valve connection element (2), connected to the media container (1), and at least one valve element (3, 3a, 3b), connectable to the valve connection element (2), wherein the media container (1) has a collar (4), which is molded on in one piece and protrudes from the media container (1) and has a collar outer wall (5) and a collar inner wall (6). A restoring element (11, 11a, 11b) is arranged in such a way that, during the fitting of the valve element (3, 3a), the collar (4) and the restoring element (11, 11a, 11b) are jointly pressed between a partial region (9a) of the wall (9) and the pressing portion (10), wherein the restoring element (11, 11a, 11b) is formed from a crosslinked plastics material, preferably from crosslinked polyethylene, and wherein the pressing portion (10), the collar (4) and the restoring element (11, 11a, 11b) are made to match one another and formed in such a way that the joint pressing of the collar (4) and the restoring element (11, 11a, 11b) has the effect that an elastic deformation (X) of the restoring element (11, 11a, 11b) that is greater than the maximum creep deformation (Y) of the collar (4) over the service life of the device can be set, and so the creep deformation (Y) of the collar (4) can be compensated by way of the restoring element (11, 11a, 11b). The invention also relates to a fuel-energy conversion device, a motor vehicle and a method for fitting a device for the storage and delivery of liquid and/or gaseous media under pressure.

A method of manufacturing a high-pressure fluid vessel includes forming a first portion of a high-pressure fluid vessel with a molding process. The high-pressure fluid vessel includes a stack of capsules. Each capsule includes a first domed end, a second domed end, and a semicylindrical portion extending between and connecting the first domed end to the second domed end. The method further includes forming a second portion of a high-pressure fluid vessel with the molding process. The second portion of the high-pressure fluid vessel is positioned adjacent to the first portion of the high-pressure fluid vessel. The second portion of the high-pressure fluid vessel is welded to the first portion of the high-pressure fluid vessel.

A manufacturing method for a pressure tank includes disposing a preform, in which a fiber layer is formed on an outer surface of a liner that forms an internal space of a pressure tank, within a mold, and rotating the preform in a circumferential direction within the mold with a central axis of the preform as a rotation center while resin is injected toward the preform disposed within the mold from a gate.

A tank includes a liner that includes a barrel portion in a cylindrical shape and a pair of dome portions provided at both ends of the barrel portion in the axial direction, and a reinforcing layer that covers the liner and that is formed from a fiber reinforced resin formed by impregnating a fiber bundle with a resin. A portion of the reinforcing layer that covers the dome portions includes a radial arrangement layer in which fibers of the fiber bundle are arranged radially along the radial direction of the dome portions when seen in the direction of an axis of the tank.

The invention relates a pressure vessel (100) configured for storing a fluid under pressure, said pressure vessel comprising: a thermoplastic liner (40) having a cylindrical section (41), a first rounded end section (42) and a second rounded end section (42); a reinforcement structure (50) made of a composite material, said reinforcement structure surrounding at least the cylindrical section of the thermoplastic liner; and a local reinforcement layer (20).

A high-pressure tank for storing a gas includes: a liner having a cylindrical opening; a reinforcing layer covering the liner; a mouthpiece including an external thread portion on an outer periphery thereof and externally fixed to the reinforcing layer covering the opening; a manifold including an inserted portion to be inserted into the opening so as to close the opening, an abutting surface configured to abut on an end face of the opening, and an internal thread portion on an inner periphery thereof to be screwed into the external thread portion of the mouthpiece; and a communicating path that allows the abutting surface of the manifold to communicate with an outside of the high-pressure tank.

The invention is a reservoir for the storage of a pressurized fluid such as compressed air. In particular, the reservoir comprises at least one tube formed of an arrangement of concentric layers (C1, C2, C3, C4). This arrangement comprises, working from the inside toward the outside of the tube, an internal layer (C1) formed of concrete, a layer (C2) formed of steel of thickness E, at least one layer (C3) formed by a winding of steel wires (C3″) on a sublayer (C3′) of concrete, and an external layer (C4) which protects the wires against at least one of physical and chemical damage, and in which the wires are subjected to circumferential (hoop) tensile prestress with at least one of the thickness E and the prestress being rated to withstand the pressure of pressurized fluid.

Application notably to the storage and recovery of energy using compressed air.

The present invention relates to metalworking, in particular to producing vessels from non-heat-treatable aluminium alloys used for tanks and pressure vessels. Disclosed is a method of manufacturing a vessel, the method including: forming a tube by rolling at least one flat blank and abutting the edges thereof, friction stir welding the abutted edges and working at least a part of the welded tube into a shape of the vessel, wherein the flat blank is a sheet of a non-heat-treatable aluminium alloy preliminarily subjected to cold working with permanent deformation within the range of 0.5-15%, and said working of at least one part of the welded tube is hot working at a temperature of 230-520° C. The technical effect is a reduction in vessel weight, an increase in vessel strength, a uniform vessel strength and a reduction in the number of hot working cycles during manufacturing of the vessel. Further, the method provides reduced metal and time consumption in manufacturing a vessel from a non-heat-treatable aluminium alloy, low payload ratio, increased reliability and longer service life of the vessel produced using the method.