A precast, prestressed concrete tank and method that facilitates construction of a primary inner tank within a secondary outer tank, and which permits for the construction of the primary inner tank after the secondary outer tank has been erected, but without requiring insertion through a top of the secondary outer tank, or by tunneling underneath the secondary outer tank, is disclosed. The primary inner tank has an inner wall and the secondary outer tank has an outer wall (precast, prestressed concrete) and wire windings. The primary inner tank is disposed inside of the secondary outer tank. The secondary outer tank has a plurality of first precast outer wall panels, and a temporary construction opening frame. The temporary construction opening frame defines an access doorway during construction of the tank. The temporary construction opening frame is disposed on a foundation base slab.

A precast, prestressed concrete tank and method that facilitates construction of a primary inner tank within a secondary outer tank, and which permits for the construction of the primary inner tank after the secondary outer tank has been erected, but without requiring insertion through a top of the secondary outer tank, or by tunneling underneath the secondary outer tank, is disclosed. The primary inner tank has an inner wall and the secondary outer tank has an outer wall (precast, prestressed concrete) and wire windings. The primary inner tank is disposed inside of the secondary outer tank. The secondary outer tank has a plurality of first precast outer wall panels, and a temporary construction opening frame. The temporary construction opening frame defines an access doorway during construction of the tank. The temporary construction opening frame is disposed on a foundation base slab.

It concerns the invention of a pressure vessel (VP) which can be assembled from individual parts, and basically comprises: a plurality of wall modules (MP), at least one connection module (MC) for pipes or sensors, and closing modules (MF) that can be chosen from: have equal configuration and have different configurations. All of the modules have bores (105) distributed radially on their flat surfaces (101) and these bores (105) are distributed between a hollow drill (1051) with a seat (1151) and a torque screw bored (1052) (106) inserted therein attach a module to another adjacent module, with a sealing ring (104) therebetween.

A method of manufacturing a composite vessel assembly (20) includes the steps of filling a first chamber defined by a first liner (28,30,32) with a first granulated material (96) through a first orifice (98) in the first liner. A vacuum is then applied to the first chamber, and the first orifice is plugged. The first liner may then be enveloped with a first layer (84) for structural rigidity followed by relief of the vacuum.

A pressure vessel includes a liner and a reinforcing layer. The liner includes a body portion having a cylindrical shape. The liner is configured such that a gas is filled in the liner. The reinforcing layer is made of a material having a linear expansion coefficient lower than a linear expansion coefficient of a material of the liner. The reinforcing layer is formed in contact with an outer surface of the body portion. The reinforcing layer is configured to cover the liner from outside the liner. A thickness of the body portion is set to such a value that the outer surface of the body portion is not separated from the reinforcing layer when the gas that has been filled in the liner is discharged out of the liner.

A precast, prestressed concrete tank and method that facilitates construction of a primary inner tank within a secondary outer tank, and which permits for the construction of the primary inner tank after the secondary outer tank has been erected, but without requiring insertion through a top of the secondary outer tank, or by tunneling underneath the secondary outer tank, is disclosed. The primary inner tank has an inner wall and the secondary outer tank has an outer wall (precast, prestressed concrete) and wire windings. The primary inner tank is disposed inside of the secondary outer tank. The secondary outer tank has a plurality of first precast outer wall panels, and a temporary construction opening frame. The temporary construction opening frame defines an access doorway during construction of the tank. The temporary construction opening frame is disposed on a foundation base slab.

A precast, prestressed concrete tank and method that facilitates construction of a primary inner tank within a secondary outer tank, and which permits for the construction of the primary inner tank after the secondary outer tank has been erected, but without requiring insertion through a top of the secondary outer tank, or by tunneling underneath the secondary outer tank, is disclosed. The primary inner tank has an inner wall and the secondary outer tank has an outer wall (precast, prestressed concrete) and wire windings. The primary inner tank is disposed inside of the secondary outer tank. The secondary outer tank has a plurality of first precast outer wall panels, and a temporary construction opening frame. The temporary construction opening frame defines an access doorway during construction of the tank. The temporary construction opening frame is disposed on a foundation base slab.

A method of manufacturing a composite vessel assembly (20) includes the steps of filling a first chamber defined by a first liner (28,30,32) with a first granulated material (96) through a first orifice (98) in the first liner. A vacuum is then applied to the first chamber, and the first orifice is plugged. The first liner may then be enveloped with a first layer (84) for structural rigidity followed by relief of the vacuum.

A manufacturing method for a high pressure tank includes preparing a liner including a cylindrical body portion and a pair of side end portions, forming a reinforcing layer by winding fiber-reinforced resin around an outer peripheral surface of the liner, carrying out shot peening by shooting a shot material towards an inner periphery region of a boundary between the body portion and each of the side end portions, and carrying out autofrettage after the reinforcing layer is formed and the shot peening is carried out. The autofrettage is carried out by applying internal pressure to the liner such that the liner is plastically deformed and then eliminating the internal pressure such that compression stress is applied to the liner.

It concerns the invention of a pressure vessel (VP) which can be assembled from individual parts, and basically comprises: a plurality of wall modules (MP), at least one connection module (MC) for pipes or sensors, and closing modules (MF) that can be chosen from: have equal configuration and have different configurations. All of the modules have bores (105) distributed radially on their flat surfaces (101) and these bores (105) are distributed between a hollow drill (1051) with a seat (1151) and a torque screw bored (1052) (106) inserted therein attach a module to another adjacent module, with a sealing ring (104) therebetween.