Cryogenic tank with anchored membrane

Patent metadata

Field	Value
Publication number	US-9857030-B2
Application number	US-201615150195-A
Country	US
Kind code	B2
Filing date	May 9, 2016
Priority date	Nov 15, 2013
Publication date	Jan 2, 2018
Grant date	Jan 2, 2018

Abstract

A cryogenic tank includes a membrane anchor mechanism which fixes a membrane provided on an inner wall surface side of a concrete wall via a heat insulating material to the concrete wall, a pressing par which is provided by the membrane anchor mechanism and presses the membrane from the inside of the cryogenic tank, and an interposition part which is interposed between the pressing part of the membrane anchor mechanism and the membrane, and includes a first abutment surface coming into surface-contact with the pressing part and a second abutment surface coming into surface-contact with the membrane.

First claim

What is claimed is:

1. A cryogenic tank, comprising:
a membrane anchor mechanism which fixes a membrane provided on an inner wall surface side of a concrete wall via a heat insulating material to the concrete wall;
a pressing part which is provided by the membrane anchor mechanism and presses the membrane from the inside of the cryogenic tank; and
an interposition part which is interposed between the pressing part of the membrane anchor mechanism and the membrane, and includes a first abutment surface coming into surface-contact with the pressing part and a second abutment surface coming into surface-contact with the membrane;
wherein the membrane includes a corner membrane panel which is a curved membrane panel disposed at a corner portion of the tank, with the corner portion of the tank formed by two surfaces, and
the interposition part is interposed between the pressing part and the membrane at the corner membrane panel, and the second abutment surface is curved and is in surface-contact with the corner membrane panel,
wherein an outer edge of the interposition part is welded to the membrane to fix the interposition part to the membrane, and an outer edge of the pressing part is welded to the first abutment surface to fix the outer edge of the pressing part to the first abutment surface.

2. The cryogenic tank according to claim 1 ,
wherein the membrane anchor mechanism includes an anchor which is inserted into a through-hole passing through the heat insulating material and the membrane and in which the pressing part is fixed to a tip exposed through the through-hole, and
wherein a shape of the interposition part is set to an annular shape which is disposed to surround a connection location between the anchor and the pressing part.

Assignees

• Ihi Corp

Inventors

• KANNO Ryuzo
• FURIKOMA Michitaka
• Kamiya Eiji

Classifications

• F17C2203/0604

  Liners · CPC title

• F17C13/001 Primary

  Thermal insulation specially adapted for cryogenic vessels (vessels not under pressure with insulation F17C3/02; thermal insulation in general F16L59/00) · CPC title

• F17C3/022 Primary

  Land-based bulk storage containers (civil engineering aspects E04H7/00) · CPC title

• F17C2270/0136

  Terminals · CPC title

• F17C2203/0333

  Polyurethane · CPC title