Membrane type insulation system for cryogenic LNG carrier cargo tank and liquefied gas fuel container
AssigneeDaewoo Shipbuilding & Marine Engineering Co., Ltd.
InventorsSeong Woo Park, Seung Min Kwon, Joong Kyoo Kang
Life of this patent
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Abstract
Disclosed is a membrane type insulation system for LNG carrier cargo tank and liquefied gas fuel container wherein a corrugation finishing membrane formed of Invar steel is welded to a secondary membrane connecting portion or a primary membrane connecting portion in order to seal corrugations at a corner portion of a cargo tank in a structure wherein at least one of a primary membrane and a secondary membrane is formed of an SUS material having corrugations, thereby improving work efficiency while reducing manufacturing costs through elimination of a separate angled piece for connection between corrugations on adjacent walls at the corner portion.
Claims17
A membrane type insulation system for LNG carrier cargo tank and liquefied gas fuel container, the membrane type insulation system comprising:
- at least a first membrane formed of an SUS material having one or more corrugations;
- an Invar tube structure having at least a first membrane connecting portion configured to transfer load of a cargo tank from a corner portion of the cargo tank to an inner wall of a hull;
- and
- a corrugation finishing membrane of Invar steel connected to both of the first membrane connecting portion and the first membrane, such that the corrugation finishing membrane seals a gap between the first membrane connecting portion and the one or more corrugations of the first membrane.
A membrane type insulation system for LNG carrier cargo tank and liquefied gas fuel container, the membrane type insulation system comprising:
- an insulation box disposed at a corner portion of a cargo tank;
- an Invar tube structure comprising a first membrane connecting portion and a second membrane connecting portion configured to transfer load of the cargo tank from the corner portion to an inner wall of a hull;
- a first insulation panel disposed on the inner wall of the hull;
- a first membrane disposed on the first insulation panel, connected to the first membrane connecting portion, and formed of an SUS material having one or more corrugations;
- a second insulation panel disposed on the first membrane;
- a second membrane disposed on the second insulation panel and connected to the second membrane connecting portion;
- and
- a corrugation finishing membrane of Invar steel connected to both of the first membrane connecting portion and the first membrane, such that the corrugation finishing membrane seals a gap between the first membrane connecting portion and the one or more corrugations of the first membrane.
A membrane type insulation system for LNG carrier cargo tank and liquefied gas fuel container, wherein a corrugation finishing membrane of Invar steel is connected to both of a first membrane connecting portion and a first membrane such that the corrugation finishing membrane seals a gap between the first membrane connecting portion and one or more corrugations of the first membrane,
- wherein the gap comprises a height gap between (i) a portion of the first membrane connecting portion connected to the corrugation finishing membrane and (ii) a portion of the one or more corrugations of the first membrane connected to the corrugation finishing membrane, along a thickness direction perpendicular to a planar surface of the first membrane connecting portion.
A membrane type insulation system for LNG carrier cargo tank and liquefied gas fuel container, wherein a corrugation finishing membrane of Invar steel is connected to both of a first membrane connecting portion and a first membrane such that the corrugation finishing membrane seals a gap between the first membrane connecting portion and one or more corrugations of the first membrane,
- wherein the gap comprises a width gap between (i) a portion of the first membrane connecting portion connected to the corrugation finishing membrane and (ii) a portion of the one or more corrugations of the first membrane connected to the corrugation finishing membrane, along a width direction perpendicular to both of (a) a thickness direction perpendicular to a planar surface of the first membrane connecting portion and (b) a leading edge of the first membrane connecting portion that is closest to the first membrane,
- wherein the first membrane connecting portion and the corrugation finishing membrane overlap in the width direction.
A membrane type insulation system for LNG carrier cargo tank and liquefied gas fuel container, wherein a corrugation finishing membrane of Invar steel is connected to both of a first membrane connecting portion and a first membrane such that the corrugation finishing membrane seals a gap between the first membrane connecting portion and one or more corrugations of the first membrane,
- wherein the gap comprises a width gap between (i) a portion of the first membrane connecting portion connected to the corrugation finishing membrane and (ii) a portion of the one or more corrugations of the first membrane connected to the corrugation finishing membrane, along a width direction perpendicular to both of (a) a thickness direction perpendicular to a planar surface of the first membrane connecting portion and (b) a leading edge of the first membrane connecting portion that is closest to the first membrane,
- wherein the first membrane and the corrugation finishing membrane overlap in the width direction.
Dependencies are inferred from the claim text.