In one aspect the present disclosure relates to a method of manufacturing a cryogenic pressure vessel. The method may include providing a metal lined, composite wrapped vessel which has a boss. The method may further include securing an inlet to the boss, and then encapsulating the metal lined, composite wrapped vessel within a metallic layer in a vacuum controlled environment to form an encapsulated inner tank subassembly. The method may further include securing at least one support to an exterior of the encapsulated inner tank subassembly, and within the controlled vacuum environment, applying a metal coating over the encapsulated inner tank subassembly and the at least one support to form a metal coated, encapsulated inner tank subassembly. The method may further include, within the controlled vacuum environment, encapsulating the metal coated, encapsulated inner tank subassembly within a metallic vacuum jacket, which forms the cryogenic pressure vessel.

A method for manufacturing a high pressure tank includes a step of forming a reinforcing pipe portion including a straight pipe portion and reduced-diameter portions, a step of forming reinforcing dome portions, a step of forming a joined body by joining the reinforcing pipe portion and the reinforcing dome portions, and a step of forming an outer helical layer on an outer face of the joined body. The reinforcing dome portions are disposed with opening ends of the reinforcing dome portions positioned on outer faces of the reduced-diameter portions of the reinforcing pipe portion.

A tank comprises: a liner having a cylindrical trunk portion and a hemispherical dome portion provided at both ends of the trunk portion in a central axis direction; a fiber-reinforced resin layer formed on an outer peripheral surface of the liner; and a metallic reinforcement member formed integrally with the liner. The reinforcement member is arranged in the dome portion at least at a shoulder portion near a boundary between the dome portion and the trunk portion and is not arranged at least at part of the trunk portion.

The invention relates to a pressure vessel with reinforced pole caps and a method for producing such a pressure vessel, which comprises an inner vessel of a cylinder-shaped central part and two dome-shaped pole caps closing the central part on both sides and an outer layer wound on the inner vessel for the reinforcement of the inner vessel against a pressure load, wherein the outer layer comprises at least one pole cap reinforcement layer and a pressure vessel reinforcement layer of fiber composite material, wherein the pole cap reinforcement layer at least partially covers the pole caps and the pressure vessel reinforcement layer covers the pole caps and the central part and a contour-stable preform is arranged as the pole cap reinforcement layer on at least one of the pole caps, preferably on both pole caps.

A method for manufacturing a high-pressure tank including a liner and a fiber-reinforced resin layer, the fiber-reinforced resin layer having a first reinforcing layer covering an outer surface of the liner and a second reinforcing layer covering an outer surface of the first reinforcing layer includes: forming a cylinder member made of a fiber-reinforced resin and having fibers oriented in a circumferential direction of the cylinder member; forming two dome members made of the fiber-reinforced resin; forming a reinforcing body that is the first reinforcing layer by joining the cylinder member and the dome members; and forming on an outer surface of the reinforcing body the second reinforcing layer made of the fiber-reinforced resin and having fibers oriented across the dome members.

A method for manufacturing a high-pressure tank including a liner and a fiber-reinforced resin layer, the fiber-reinforced resin layer having a first reinforcing layer covering an outer surface of the liner and a second reinforcing layer covering an outer surface of the first reinforcing layer includes: forming a cylinder member made of a fiber-reinforced resin and having fibers oriented in a circumferential direction of the cylinder member; forming two dome members made of the fiber-reinforced resin; forming a reinforcing body that is the first reinforcing layer by joining the cylinder member and the dome members; and forming on an outer surface of the reinforcing body the second reinforcing layer made of the fiber-reinforced resin and having fibers oriented across the dome members.

A method for manufacturing a high pressure tank includes a step of forming a reinforcing pipe portion including a straight pipe portion and reduced-diameter portions, a step of forming reinforcing dome portions, a step of forming a joined body by joining the reinforcing pipe portion and the reinforcing dome portions, and a step of forming an outer helical layer on an outer face of the joined body. The reinforcing dome portions are disposed with opening ends of the reinforcing dome portions positioned on outer faces of the reduced-diameter portions of the reinforcing pipe portion.

A method for manufacturing a vessel configured for housing a fluid within, the method comprising: providing two Fiber Reinforced Polymer (FRP) structures shaped with complementary coupling interfaces configured to match with each other, such that an interior volume is defined when the FRP structures are coupled to each other; coupling the FRP structures to each other such that the interior volume is defined; and fastening the FRP structures after they have been coupled to each other.

A method for manufacturing a vessel configured for housing a fluid within, the method including: providing at least two at least partially cured fiber reinforced polymer (FRP) structures with complementary shapes configured for matching with each other such that an interior volume is defined when the at least partially cured FRP structures are coupled to each other; coupling the at least partially cured FRP structures to each other such that the interior volume is defined; winding at least one layer of FRP material onto at least a portion of the at least partially cured FRP structures once coupled to each other; and applying a curing cycle to cure the resulting assembly.

This manufacturing method is a manufacturing method of a high-pressure tank that is formed by joining dome-shaped side end members to both ends of a cylindrical tube member and that has a first reinforcing layer made of fiber-reinforced resin. The manufacturing method has a joining step of joining the side end members to both ends of the tube member such that an outer wall surface of the tube member and an inner wall surface of each side end member face each other. In the joining step, a margin for overlap between each side end member and the tube member in an axial direction of the tube member is within a range of 5% or more to 35% or less relative to the inside diameter of the tube member.