CN-121986237-A - Liquefied gas storage facility

Abstract

The invention relates to a liquefied gas storage facility (1) comprising a sealed and thermally insulated tank mounted in a support structure, the tank comprising a cylindrical tank wall (22) arranged on an inner surface (13) of the cylindrical support wall, and an insulation barrier comprising a plurality of insulation panels (21) having a first edge parallel to the busbar direction, the insulation panels (21) being pivoted in sequence around the busbar direction through a tangential angle such that the inner surfaces of the insulation panels define a cylindrical surface with a polygonal alignment curve, the sealing film comprising a plurality of metal plates (30), each metal plate comprising corrugations (27, 35) parallel to the busbar direction, each arranged in alignment with said gaps (24), and two planar portions (34, 36) angled at tangential angles around the busbar direction and arranged respectively on two of said insulation panels (31) separated by a gap.

Inventors

• Emmanuel Russo
• Bruno Dreit
• Fabian Peske
• Bris Laagri

Assignees

• 气体运输技术公司

Dates

Publication Date

20260505

Application Date

20251013

Priority Date

20241016

Claims (11)

1. 1. A liquefied gas storage facility (1), the liquefied gas storage facility (1) comprising: A support structure (10), the support structure (10) comprising a cylindrical support wall (12) having a vertical generatrix direction and a bottom support wall closing the cylindrical support wall to define an internal space (2) of the support structure, and A sealed and thermally insulated tank mounted in the interior space of the support structure, the tank comprising a cylindrical tank wall (22) arranged on an interior surface (13) of the cylindrical support wall, the cylindrical tank wall comprising a sealing membrane (16) and an insulation barrier (15), the sealing membrane (16) being for being in contact with liquefied gas contained in the tank, the insulation barrier (15) being arranged between the sealing membrane (16) and the cylindrical support wall; The insulation barrier comprising a plurality of insulation panels (21) having a first edge parallel to the busbar direction and a second edge perpendicular to the busbar direction, the insulation panels being juxtaposed in a circumferential direction of the cylindrical support wall with a gap (24) provided between the insulation panels, the circumferential direction being perpendicular to the busbar direction, the insulation panels (21) being pivoted in sequence through a tangential angle about the busbar direction such that an inner surface (29) of the insulation panels defines a cylindrical surface with a polygonal quasi-linear curve, The sealing film comprises a plurality of rectangular metal plates (30) assembled in a sealing manner, the metal plates (30) having a first edge (31) parallel to the busbar direction and a second edge (32) perpendicular to the busbar direction, the metal plates juxtaposed in the circumferential direction of the cylindrical support wall, each metal plate comprising a corrugation (27, 35) parallel to the busbar direction and two planar portions (34, 36) separated by the corrugation, each corrugation being arranged in alignment with the gap (24), the two planar portions (34, 36) being angled at the tangential angle around the busbar direction, and the two planar portions (34, 36) being arranged on the two insulating panels (21) separated by the gap, respectively.
2. 2. The liquefied gas storage facility according to claim 1, wherein the insulation panels are configured in the form of a plurality of rows (20) of insulation panels, each row (20) of insulation panels comprising insulation panels (21) juxtaposed in the direction of the bus bar, the rows (20) of insulation panels juxtaposed in the circumferential direction of the cylindrical support wall while the gap (24) is provided between the rows of insulation panels, the rows of insulation panels pivoting in sequence through the tangential angle about the bus bar direction such that an interior surface of the rows of insulation panels defines a cylindrical surface having a polygonal quasi-linear curve, Wherein the metal plates (30) are configured in the form of a plurality of rows of metal plates, each row of metal plates comprising metal plates juxtaposed in the busbar direction, the rows of metal plates juxtaposed in the circumferential direction, the rows of metal plates comprising the corrugations (27) parallel to the busbar direction, and the corrugations (27) each time being arranged in alignment with the gaps (24) between the rows (20) of insulating panels.
3. 3. Liquefied gas storage facility according to claim 2, wherein the metal plates (30) in the row of metal plates are joined by welding along a second edge (32) of the metal plates, the welded joints of the metal plates in the row of metal plates being provided on the insulation panel (21) and spaced apart from the second edge of the insulation panel.
4. 4. A liquefied gas storage facility according to any one of claims 1 to 3, wherein the metal plates (30) juxtaposed in the circumferential direction are joined by welding along a first edge (31) of the metal plates, the welded joints of the metal plates being provided on the insulation panel (21) and spaced apart from the first edge of the insulation panel.
5. 5. The liquefied gas storage facility according to claim 4, wherein an inner surface (29) of the insulation panel has a metal anchoring portion (40), and the welded joint of the metal plates is welded to the metal anchoring portion (40).
6. 6. The liquefied gas storage facility according to any one of claims 1 to 5, wherein the corrugations (27, 35) of the metal plates are first corrugations, each metal plate further comprising a second corrugation (26, 33), the second corrugations (26, 33) extending parallel to the second edge (32) of the metal plate in a spaced apart manner from the second edge of the metal plate, the second corrugations (26, 33) of the metal plates (30) juxtaposed in the circumferential direction being aligned in the circumferential direction.
7. 7. The liquefied gas storage facility according to claim 6 in combination with claim 2, wherein the interface between the insulation panels (21) in a row of insulation panels is positioned in alignment with the second corrugations (26, 33) of the metal sheet.
8. 8. Liquefied gas storage facility according to claim 6 or 7, wherein the first corrugation (35) and the second corrugation (33) protrude towards the interior of the tank with respect to the planar portion (34, 36) of the metal plate, the height of the first corrugation (35) being greater than the height of the second corrugation (33).
9. 9. Liquefied gas storage facility according to any of claims 1 to 8, wherein the cut-off angles between adjacent insulation panels (21) are uniform, the polygonal quasi-linear curve being a regular polygon.
10. 10. The liquefied gas storage facility according to any one of claims 1 to 9, wherein the sealing membrane is a primary sealing membrane (16), the cylindrical tank wall further comprising a secondary sealing membrane (14) arranged between the insulation panel (21) and the cylindrical support wall (12).
11. 11. Liquefied gas storage facility according to any of claims 1 to 10, wherein the support structure (10) is made of concrete.

Description

Liquefied gas storage facility Technical Field The present invention relates to liquefied gas storage facilities comprising sealed and thermally insulated tanks with membranes. In particular, the invention relates to the field of onshore facilities for storing liquefied gases at low temperature, such as liquefied petroleum gas (also referred to as LPG) having a temperature in the atmosphere of, for example, between-50 ℃ and 0 ℃, liquefied Natural Gas (LNG) at about-162 ℃ in the atmosphere, or liquefied ammonia at about-33 ℃ in the atmosphere. Background FR2739675A1 discloses a land tank for storing LNG, the land tank comprising a support structure comprising a cylindrical support wall and a bottom support wall. The cylindrical support wall has a vertical generatrix direction, and the bottom support wall encloses the cylindrical support wall to define an interior space of the support structure. A sealed and thermally insulated tank is mounted in the interior space of the support structure. The tank includes a cylindrical wall disposed on an inner surface of the cylindrical support wall, the cylindrical wall including a sealing film for contacting the liquefied gas contained in the tank and an insulation barrier disposed between the sealing film and the cylindrical support wall, the insulation barrier including a plurality of insulation panels having a first edge parallel to a bus bar direction and a second edge perpendicular to the bus bar direction, the insulation panels being juxtaposed in a circumferential direction of the cylindrical support wall. The sealing film comprises stainless steel strakes welded to each other with upturned edges, the midline of the strakes being substantially vertical, the upturned edges of two adjacent strakes being welded on either side of a metal tongue held by the insulation barrier. Disclosure of Invention Certain aspects of the invention are based on the observation that the installation of a metal tongue complicates the manufacture of such sealing films. One idea on which the invention is based is to provide a liquefied gas storage facility that is simple and reliable to manufacture. Accordingly, the present invention provides a liquefied gas storage facility comprising: a support structure comprising a cylindrical support wall having a busbar orientation, preferably vertical, and a bottom support wall closing the cylindrical support wall to define an interior space of the support structure, and A sealed and thermally insulated tank mounted in the interior space of the support structure, the tank comprising a cylindrical tank wall arranged on an interior surface of the cylindrical support wall, the cylindrical tank wall comprising a sealing membrane for contact with liquefied gas contained in the tank and an insulation barrier arranged between the sealing membrane and the cylindrical support wall, The insulation barrier comprises a plurality of insulation panels having a first edge parallel to the busbar direction and a second edge perpendicular to the busbar direction, the insulation panels being juxtaposed in the circumferential direction of the cylindrical support wall with a gap provided between the insulation panels, the circumferential direction being perpendicular to the busbar direction, the insulation panels being pivoted in sequence around the busbar direction through a tangential angle such that the inner surfaces of the insulation panels define a cylindrical surface with a polygonal quasi-linear curve, The sealing film comprises a plurality of rectangular metal plates assembled in a sealing manner, the metal plates having a first edge parallel to the busbar direction and a second edge perpendicular to the busbar direction, the metal plates being juxtaposed in the circumferential direction of the cylindrical support wall, each metal plate comprising a corrugation parallel to the busbar direction and two planar portions separated by the corrugation, each time the corrugation being arranged in alignment with said gap, the two planar portions being angled at a tangential angle around the busbar direction, and the two planar portions being arranged on two said insulating panels separated by the gap, respectively. Thanks to these features, the sealing film can be manufactured in a simple and reliable manner. In particular, on the one hand, the angle of the metal plate can be produced at the corrugations parallel to the busbar direction, the geometry of the corrugations itself being liable to form the angle. On the other hand, the gap of the isolation barrier, which is a weak position where the sealing film is locally supported, corresponds to a corrugated portion of the metal plate, and the breaking strength of the corrugated portion is higher than that of the planar portion. Therefore, the risk of fatigue or buckling of the metal plate can be reduced. Thanks to these characteristics, the cylindrical wall of the tank can be manufactured with a different number of cu