Abstract:
A process for manufacturing high-pressure tanks of low weight with an armored corrugated metal sheath, a corrugated pipe is circumferentially armored, with the metallic tank being introduced into the armored corrugated pipe. An assembly which includes the armored pipe and the tank is longitudinally armored except for oppositely disposed openings of the pipe and the metallic tank. The material of the metallic tank is caused to creep through plastic deformation under an effect of an internal pressure in order to obtain a corrugation of the cylindrical part of the metallic tank.
Abstract:
A pressure vessel of fibre-reinforced plastic has an essentially cylindrical central portion (10) and two end portions (11, 12) and is preferably provided with a gas-tight liner (14). The central portion comprises a tangential winding (20) of the fibre material, in which the fibre material is oriented in an essentially tangential direction and an axial winding (21), located outside the tangential winding, of fibre material in which the fibre material is oriented in an essentially axial direction and the fibre material of which extends out into and forms a reinforcement of the fibre material in the end portions. The central portion, including its tangential winding and its axial winding, in each of its parts (10a, 20a, 21a) located nearest to an end portion, is formed with a diameter which decreases in a direction towards the end portion. That part (20a) of the tangential winding having a diameter decreasing in a direction towards the end portion preferably has an end (20b) facing the end portion, the wall of the end having an at least substantially wedge-shaped cross-section.
Abstract:
A composite pressure vessel includes retaining rings at opposite ends of a side wall structure having circumferentially spaced oppositely facing tabs thereon about which longitudinal tension windings are progressively wrapped back and forth in a continuous manner around the circumference of the vessel. Between the tabs at opposite ends of the vessel are oppositely tapered ramp surfaces providing a transition for the longitudinal tension windings from a first diameter axially inwardly of the retaining rings to a second, smaller diameter adjacent the axial outer ends of the tabs, which places the retaining rings in compression in a circumferential direction. Each of the retaining rings has a generally cylindrical support surface adjacent the axial outer ends of the tabs for supporting the generally circumferential extending portions of the longitudinal tension windings thereon. The tabs have sides which taper toward each other in the direction of the axial outer ends of the tabs. Also, the radial outer surfaces of the tabs taper outwardly in the direction of the axial outer ends of the tabs, and such axial outer ends are rounded and extend generally radially and axially inwardly toward the respective ends of the vessel.
Abstract:
The invention relates to a composite pressure vessel (1) with a liner (2) made of plastic, at least one end boss (4) arranged in the region of the opening of the pressure vessel (1) and an outer layer (3) of a fiber composite material. The end boss (4) has a through hole (5) and is used for connecting a valve. The liner (2) has an axial tubular neck portion (14) with a mouth at its axial end, which extends into the end boss (4) and is provided on its outer side with an external thread (15) and a thread-free region. The external thread is screwed into an internal thread of the through hole (5) of the end boss (4). To optimize sealing, an inner wall of the end boss (4) in contact with the thread-free region of the neck portion (14) has at least two annular grooves (10, 11) arranged at an axial distance from one another, wherein two sealing rings (16, 17) are arranged in the annular grooves (10, 11). A first sealing ring (16) is made of a first material that seals at low temperatures, and a second sealing ring (17) is made of a second material that has low gas permeability.
Abstract:
A high pressure tank production apparatus includes a feeder for feeding reinforced fibers wound around a resin liner and a near infrared ray radiation unit inserted into the resin liner to radiate near infrared rays. The reinforced fibers wound around the resin liner absorb near infrared rays radiated from the radiate near infrared ray radiation unit by a near infrared absorber contained in the reinforced fibers. As a result, an outer layer made of fiber reinforced resin is formed to cover the resin liner.
Abstract:
In a pressure vessel which is formed by blow molding a plastic liner with a mouth member fitted on a blow pin, a rotational torque is prevented from being applied between the mouth member and the blow pin when removing the blow pin. A parison is placed around the mouth member which is fitted on the blow pin, and is blow molded with a die assembly placed around the parison so that a vessel shaped plastic liner is formed. An engagement structure which is provided between the mouth member of the pressure vessel and the blow pin includes a ball moveably received in a radial through hole of the peripheral wall of the blow pin, and a release groove formed on an inner circumferential surface of the mouth member and having a prescribed depth. When the blow pin is introduced into the mouth member until the ball and the release groove oppose each other, the ball moves radially outward and becomes partly received by the release groove to engage the mouth member with the blow pin.
Abstract:
Vessel, comprising a substantially fluid tight liner provided with a layer of fiber material, and a mount for mounting appendages to the vessel. The mount comprises a substantially cylindrical neck portion with a radially outwardly extending base flange. The base flange is axially fixedly but rotationally free held between the liner and the layer of fiber material.