Abstract:
Liquefied natural gas container comprising a loadbearing structure (11) and an impermeable and thermally insulated tank designed to contain liquefied natural gas, each tank wall having in succession, in the direction of the thickness, proceeding from the inside of said tank to the outside, a primary impermeable barrier, a primary thermally insulating barrier, a secondary impermeable barrier and a secondary thermally insulating barrier, the secondary impermeable barrier of a vertical wall comprising a first impermeable sheet at the top of said wall and a connecting device which impermeably connects said first impermeable sheet to said loadbearing structure, said container being characterized in that said connecting device comprises a first metal plate (22) parallel to said first impermeable sheet, and a second impermeable sheet (17) which is on the one hand bonded to said first impermeable sheet and on the other hand connected to said first metal plate.
Abstract:
A hydraulic accumulator, in particular a bladder accumulator, includes two at least partially adjacent plastic casings (12, 14). The first plastic casing (12) has a collar part (16) at least at one end thereof. To produce a leakproof accumulator arrangement economical to produce, a gap opening (24) between the casings (12, 14) extends up to a point at which the casings (12, 14) are positioned together in a coaxial manner, and a disk valve (50) is provided as a valve for controlling the supply and discharge of the medium in the opening (10).
Abstract:
The invention relates to a hydraulic accumulator, in particular a bladder accumulator, comprising two at least partially adjacent plastic casings (12, 14). The first plastic casing (12) comprises a collar part (16) at least at one end thereof. The aim of the invention is to produce a leakproof accumulator arrangement which is economical to produce. To achieve this, a gap opening (24) between the casings (12, 14) extends up to a point, at which the casings (12, 14) are positioned together in a coaxial manner, and a disk valve (50) is provided as a valve for controlling the supply and discharge of the medium in the opening (10).
Abstract:
A tubular metal body 1 comprises a tube 2 extruded through a porthole die and composed of a plurality of components 2b joined to one another with a plurality of joint portions 2a extending over the entire length of the tube. The base material metal of the extruded tube 2 in each of the joint portions 2a is subjected to a modifying treatment to produce finely divided crystal grains. The modifying treatment for the extruded tube 2 is conducted preferably by frictionally agitating each joint portion using a probe 8 of a friction agitation joining tool 6. The tubular metal body 1 is available with an increased length in a larger size and has high pressure resistance.
Abstract:
A container for cryogenic fuels assembled from a plurality of identical straight and closed profiles which are arranged in different configuration from one another and are straight hollow profiles which are arranged parallel to one another and of which at least one outer boundary wall maintains a functional distance from an outer boundary wall of an adjacent profile and to the open ends of which a common cap as a common connection space of the profiles is in each case contiguous on both sides.
Abstract:
The invention relates to an improved tank structure having an outer shell of metal material with an inner surface and an outer surface, and an inner shell of a plastic resin material fused to the inner surface of the outer shell. The tank structure has at least two insert fittings mounted in corresponding openings formed in the outer shell, each insert fitting defining an opening for providing access to the interior of the tank structure. A top end of each insert fitting projects above the outer surface of the outer shell, and is formed with a peripheral flange for welding to the outer surface of the outer shell. The remaining body portion of each insert fitting extends into the interior of the tank structure and has a circumferential groove formed in the outer surface thereof which provides a gripping surface to which the inner shell is fused.
Abstract:
A storage tank containment system including a cubic-shaped tank having an outer shell having cylindrical walls and an internal cross brace interconnecting the cylindrical walls for the efficient storage and transportation of large quantities of fluid, for example, liquid natural gas.
Abstract:
The present invention discloses a bellows (5) for use in a fluid container (1), wherein the fluid container (1) is arranged so as to contain a first fluid comprising a liquid phase (7′) and a gas phase (7″), and wherein the bellows (5) is arranged so as to separate said first fluid (7′, 7″) from a second fluid (9) transported into the bellows (5) from the exterior of the container (1). In a preferred embodiment, the bellows (5), when filled, is arranged so as to occupy a volume portion of the second fluid (9) and, when emptied, is arranged so as to contain substantially no volume portion of said second fluid (9). The invention also concerns a method related to transport and/or discharging of a container (1), wherein the volume of said first fluid (7′, I1′) of the container (1) is replaced by a second fluid (9) filled into the bellows (5).
Abstract:
An electrochemically active hydrogen diffusion barrier which comprises an anode layer, a cathode layer, and an intermediate electrolyte layer, which is conductive to protons and substantially impermeable to hydrogen. A catalytic metal present in or adjacent to the anode layer catalyzes an electrochemical reaction that converts any hydrogen that diffuses through the electrolyte layer to protons and electrons. The protons and electrons are transported to the cathode layer and reacted to form hydrogen. The hydrogen diffusion barrier is applied to a polymeric substrate used in a storage tank to store hydrogen under high pressure. A storage tank equipped with the electrochemically active hydrogen diffusion barrier, a method of fabricating the storage tank, and a method of preventing hydrogen from diffusing out of a storage tank are also disclosed.
Abstract:
A cellular reservoir flexible pressure vessel is formed as a series of closely packed tubes fitted into a pair of opposing end caps. The end caps have individual receptacles sized and shaped to receive the tube ends that are secured with adhesive or radio frequency welding. At least one end cap has a passageway for connection of the vessel. The vessel may be formed in a variety of useful shapes and the tubes may have various internal and external cross-sections. The end caps may be filled with sintactic foam with canals leading to the passageway. Microtubes through the syntactic foam may connect the tubes to the passageway. The vessel is further strengthened by overwrapping with high-strength braiding material, hoop winding or by overlayment with high-strength fabric. The vessel is further strengthened by coating with plastic resin. Apparatus and methods for forming the cellular reservoir flexible vessels are described.