Abstract:
A tank (2) has a shell (3) defining an inner chamber (4), which contains liquefied petroleum gas and houses a member (10) that is moveable in order to vary the volume available for the liquefied petroleum gas; said member preferably being defined by an inflatable bag (10).
Abstract:
A container (1) having a first compartment (3) and a second compartment (5) separated by a movable gas impermeable partition (7) is used for storing and dispensing a gas for use in a process and receiving and storing a gas recovered from the process. Fresh gas is dispensed (9) from the first compartment (3) for use in a process and recovered gas is fed (11) to the second compartment (5), whereby a volume of the second gas displaces a volume of the first gas by movement of the partition (7) to enlarge the second compartment (5) relative to the first compartment (3).
Abstract:
The invention concerns a tank formed by a plurality of elementary tanks such as tubes (20) connected in parallel to at least a manifold (30, 32) and comprising closing means in the form of valves for isolating any one of the elementary tanks in response to a fall of pressure in it.
Abstract:
A hydropneumatic filament-wound pressure vessel is disclosed. The vessel has first and second cup-shaped tank liners having circular open mouths which are provided with a seal and diaphragm assembly. The seal assembly includes a pocket formed by an inner wall and shelf associated with the first liner and a ledge associated with the second liner. The shelf, ledge and cylindrical wall cooperate with an inner surface of the second liner to provide an O-ring pocket. An O-ring is provided in the pocket and the O-ring defines the periphery of a flexible diaphragm which divides the interior of the liners into separate pressure chambers. A continuous filament is wound over the surface of the liners in an isotensoid pattern. Each liner has a geodesic dome surface extending between a diameter of the liner and a polar opening. The dome surface is defined by oppositely curving surfaces of revolution of a meridia joined by an inflection point. The first surface of revolution curves from the liner diameter to a first point just unto but not at said inflection point. The second surface of revolution curves from the polar opening to a second point just unto but not at said inflection point in a direction opposite the curvature of the first surface of revolution. The first and second surfaces are joined, and the inflection point is traversed by a straight line third surface of revolution closely approximating geodesic curvature through the inflection point.
Abstract:
Device for maintaining a preset gauging condition in pressure reducers for liquid gas (1) comprises a body (2) defining a chamber closed at the top by an elastic membrane (3) biassed by one end of a spring (8) the other end whereof acts against a body (4) cover. On the inner face of the cover at least a receiving seat (11) is defined in which a detent ball (10) is force fitted effective to maintain for the spring (8) preset position and compression.