Abstract:
A pressurised gas cylinder defined by a wall, closed at one end, and having an access valve at the opposite end. The access valve comprises a valve stem which is biased closed onto a seat. The access end has an inturned portion which surrounds the valve stem. A biasing member is connected to the inturned part of the cylinder, and at least one resilient prong engages against the valve stem to bias it on to the seat.
Abstract:
Gasdruckbehälter (1), insbesondere für ein Airbagsystem eines Kraftfahrzeugs, umfassend ein Rohrelement (10) mit hoher Berstfestigkeit bei Innendruckbeaufschlagung, wobei das Rohrelement (10) aus einer Stahllegierung besteht und in einem ersten Längenabschnitt (11) eine Zugfestigkeit Rm ,11 größer (>) 800 MPa, eine Übergangstemperatur Tu ,11 von mindestens -40°C und einen Außenumfang U1 aufweist, wobei das Rohrelement (10) wenigstens einen zweiten Längenabschnitt (12) und/oder weitere Längenabschnitte (13, 16) umfasst die sich axial vom ersten Längenabschnitt (11) erstrecken, wobei der zweite Längenabschnitt (12) oder weitere Längenabschnitte (13, 16) sowie der erste Längenabschnitt (11) einstückig und stoffeinheitlich aus einem nahtlosen oder geschweißten, insbesondere warmgewalzten oder kaltgezogenen Rohr ausgebildet sind, wobei der zweite Längenabschnitt (12) oder weitere Längenabschnitte U 13,16 einen Außenumfang U 12 , U 13 aufweist, der gegenüber dem Außenumfang U 11 des ersten Längenabschnitts (11) verringert ist, dadurch gekennzeichnet, dass das Rohrelement (10) im zweiten Längenabschnitt (12) und/oder im weiteren Längenabschnitt (13) eine Übergangstemperatur T u,12 , Tu ,13 kleiner -50°C sowie kleiner als die Übergangstemperatur Tu ,11 des ersten Längenabschnitts (11) aufweist.
Abstract:
A pressure vessel fluid manifold assembly includes a pressure vessel having a plurality of lobes joined to each other, each of the plurality of lobes having a wall disposed in contact with an adjacent wall of an adjacent lobe, and wherein the manifold can be external or internal to the lobes.
Abstract:
A pressure vessel comprises a closed end, a cylindrical side wall (11) and a shoulder and neck. The internal surface profile of the closed end of the pressure vessel comprises a central section (13), at least one intermediate ring (14) and an outermost ring (15) with intersecting but differing curvatures of radii: R, r, and Rc respectively. The central section (13), the at least intermediate ring (14) and the outermost ring (15) connect a central point where the end face intersects the longitudinal axis with the cylindrical side wall. The relationship between the radii of the central section (13), the at least intermediate ring (14) and the outermost ring (15) in combination with the height H of the closed end to its junction (10) with the cylindrical side wall (11) provide a high pressure vessel which may be manufactured using either cold or warm extrusion and which has an equivalent or improved lifetime in contrast to equivalent conventional high pressure vessels manufactured using hot extrusion.A method of manufacturing the pressure vessel is also disclosed.
Abstract:
Dispositif de stockage et de restitution de fluides à pression quasi constante, lesdits fluides comprenant un gaz et un liquide, comprenant un ensemble de réservoirs (1 ) sensiblement identiques, lesdits réservoirs comprenant : - une partie (G) contenant le gaz et une partie (L) contenant le liquide, - un moyen (23) de séparation entre le gaz et le liquide dans le réservoir (1 ), - un orifice (36) d'entrée et un orifice (36) de sortie du gaz, - un orifice (35) d'entrée et un orifice (35) de sortie du liquide. Les réservoirs (1 ) ont une enveloppe extérieure cylindrique (100) constituée d'au moins un tube métallique (101 ) du type de ceux utilisés pour les gazoducs et les oléoducs, dont : - le diamètre extérieur est supérieur à 32" (813 mm), et - le rapport entre sa longueur et son diamètre extérieur est supérieur à 8.
Abstract:
A CNG transportation vehicle comprising at least one vertially oriented, generally cylindrical, pressure vessel (10) of the type for containing and transporting CNG, the vessel having a generally cylindrical body and two ends and an opening in the form of a manhole at the top end thereof.
Abstract:
The invention relates to a pressure vessel for receiving and storing cryogenic fluids, in particular cryogenic liquids, said pressure vessel being composed of a metal vessel that forms a liner (12) and a reinforcement (14) made of fiber-reinforced plastic applied to the liner (12), wherein the liner (12) is made of a non-magnetic metal alloy having a fully austenitic face-centered cubic lattice structure and is subjected to a nitriding treatment by means of nitrogen or ammonia in order to expand the elastic range before the reinforcement (14) made of fiber-reinforced plastic is applied. The invention further relates to methods for producing said pressure vessel and to the use of said pressure vessel.
Abstract:
Compressed hydrogen gas can be stored and transferred in hollow structures that include at least one porous metal, in order to protect one or more surrounding layers from being damaged by diffusive flux of hydrogen gas. The masses of hydrogen gas that enter the layer(s)/interlayer(s) of the porous metal(s) are removed from the interconnected pore space in the layer(s)/interiayer(s) of the porous metal(s) to ensure that the pressure(s) of the hydrogen gas remain(s) low-generally less than or equal to one atmosphere. When the structure that holds compressed hydrogen gas is a cylindrical pressure vessel, pipe or pipeline, a technique known as "C-forming" can be used to create a wall containing at least one layer of a porous metal.
Abstract:
A method of treating the internal surface of a container for the storage of gas, such as a gas cylinder, that is made from or lined with aluminium or aluminium alloy. The method is characterised in that it comprises creating a freshly exposed aluminium surface, for example by the use of a wet grinding, in the presence of a surfactant. The surfactant is preferably derived from C 6 - C 18 carboxylic acids. The container for the storage of gas provides long-term gas stability. The internal surface of the container has a substantially continuous disturbed layer and is hydrophobic. It may also incorporate groups or species derived from the surfactant and/or comprise oxides or oxyhydroxides of aluminium.
Abstract:
The invention concerns safety tanks, toric or not for motor vehicles with dual-fuel carburation LPG, to be generally located in the spare wheel housing, characterised in that their structure consists of the assembly of two shells completed or not by a central portion, 19 models as per figure 1. They are all fitted with novel single-piece multiple flanges (8 a, b, c and d), oval-shaped and comprising two orifices, one for the operating multiple valve and the other for the pressure control valve as per R 67 standards and capable of being open-air mounted for economising energy and protecting the environment.