A sealed and thermally insulating tank for transporting and/or storing liquefied natural gas includes a load-bearing structure and a storage structure surrounded by the load-bearing structure. The storage structure includes a first portion and a second portion that are sealed with respect to one another, the first portion and the second portion extending in one and the same plane which is parallel to the load-bearing structure. The tank includes a closure device arranged in the thickness of the storage structure. The closure device includes a first closure member and a second closure member that cooperate with one another to separate the first portion from second portion. One of the closure members includes a first part and a second part that extend in intersecting planes. One of the parts is connected to one of the portions by a fastening device that is arranged in the thickness of the storage structure.

The invention relates to an insulating block intended for the thermal insulation of a fluid storage tank comprising: a first plate (11) and a second plate that are parallel to one another, spaced apart in a thicknesswise direction of the insulating block; supporting pillars inserted between said first and second plates (10, 11) in the thicknesswise direction of the insulating block; and a heat-insulating lining positioned between the supporting pillars; the first plate (11) comprising reinforced bearing zones (13) against which the supporting pillars (12) come to bear, the reinforced bearing zones (13) being linked to one another by a network of ribs (16).

A thermally insulating sealed tank including a bottom wall (2) attached to a supporting wall (1), the bottom wall (2) including: a sealing membrane (3) comprising a plurality of welded corrugated metal sheets, a thermally insulating barrier (4), the sealing membrane (3) and the thermally insulating barrier (4) being interrupted in a singular zone by a window (7), the tank comprising a hollow structure (15) inserted into the window (7), the hollow structure (15) being arranged through the body of the tank wall (2), wherein the tank (71) includes a metal closure plate (23), the metal closure plate (23) comprising an inner edge (24) welded all around the hollow structure (15), the metal closure plate (23) including an outer edge (25) placed under the sealing membrane (3) so as to form an overlapping area, is disclosed.

The present invention relates to a storage tank for liquid hydrogen, comprising a wall, a base, which closes the wall at the end face on one side, a top, which closes the wall at the end face on the side facing away from the base, and an intermediate wall, which is arranged inside of the wall and at a distance therefrom, wherein a gap is provided between a lower edge of the intermediate wall and the base, so that an interior enclosed by the intermediate wall is fluidically connected to an interior enclosed by the wall.

Sealed and thermally insulating tank incorporated into a polyhedral bearing structure, the tank having a plurality of tank walls, a thermally insulating barrier and a sealed membrane, a first bearing wall and second bearing wall forming an edge corner, the thermally insulating barrier of a first tank wall having a row of edging blocks, a row of anchor strips anchored to the second bearing wall by a row of anchor rods, a first and second of edging blocks each having a groove formed in thickness of said edging block, a first and a second of said anchor rods being housed respectively in the groove of the first and second edging blocks, one anchor strip in the row of anchor strips is supported overlapping the first edging block and the second edging block, the anchor strip being coupled to the first anchor rod and to the second anchor rod.

A heat insulation structure for corner parts of a liquefied natural gas (LNG) storage tank includes a secondary insulation wall arranged on an inner wall of a hull, a secondary sealing wall disposed on the secondary insulation wall, a primary insulation wall arranged on the secondary sealing wall, and a primary sealing wall disposed on the primary insulation wall. The heat insulation structure includes a corner assembly finishing an edge of the primary sealing wall at a corner part of the storage tank to complete sealing of the storage tank. The corner assembly includes an endcap sheet finishing each of four corners of the primary sealing wall provided to each surface of the storage tank to seal the four corners. The endcap sheet includes an endcap corrugation and an elongated corrugation extending in a direction perpendicular to a direction in which the endcap corrugation extends.

Systems and methods provide a self-contained sealed apparatus that captures, filters, compresses and stores methane gas produced by the decomposition of bio-degradable organic materials. The system includes a rotatable and sealable chamber with an intermittent drive unit that mixes moist bio-degradable material during an anaerobic reaction, and captures methane gas generated by anaerobic decomposition. A filter to remove impurities, a low-pressure storage tank, a compressor and a high-pressure storage tank are interconnected and controlled by a system that monitors system parameters, that may include gas flow rate, temperature, and gas volume, and controls system parameters, that may include drive unit activation, generator operation, and compressor operation.

An insulating wall fixing device for liquefied natural gas storage tanks includes: a base socket; and a securing stud inserted into the base socket. The base socket is formed on an upper surface thereof with an insertion hole through which the securing stud is inserted into the base socket and has an interior space in which one end of the securing stud is settled. The securing stud includes an insertion portion inserted into the interior space of the base socket through the insertion hole and a fastening portion protruding from the insertion portion outwardly of the base socket. The insertion portion includes a spherical shape and multiple leg members divided by a groove formed from one end of the insertion portion to the other end of the insertion portion. The multiple leg members of the insertion portion are retracted toward the groove.

An insulation box of an insulating barrier in a liquefied gas carrier includes a box structure that includes a bottom panel, a top panel, external pillars, and optionally at least one internal partition that define at least one void. The at least one void includes at least one multilayer insulation board. Each of the at least one multilayer insulation board includes at least one facer layer, at least one first polyurethane layer having a first density from 100 kg/m.sup.3 to 2000 kg/m.sup.3 according to ASTM D 1622, and at least one second polyurethane layer having a second density of less than 100 kg/m.sup.3 according to ASTM D 1622.

Disclosed is a liquefied natural gas storage apparatus. The apparatus includes a heat insulated tank and liquefied natural gas contained in the tank. The tank has heat insulation sufficient to maintain liquefied natural gas therein such that most of the liquefied natural gas stays in liquid. The contained liquefied natural gas has a vapor pressure from about 0.3 bar to about 2 bar. The apparatus further includes a safety valve configured to release a part of liquefied natural gas contained in the tank when a vapor pressure of liquefied natural gas within the tank becomes higher than a cut-off pressure. The cut-off pressure is from about 0.3 bar to about 2 bar.