US 11,971,140 B2Granted

Insulating wall fixing device of liquefied natural gas storage tank

AssigneeHanwha Ocean Co., Ltd.

InventorsByoung Hee Cheon, Dong Hyuk Jang, Say Yoon Park

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Abstract

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.

Claims6

Dependent claims

An insulating wall fixing device for a liquefied natural gas storage tank comprising a primary insulating wall and a secondary insulating wall that are arranged such that the primary insulating wall is placed over the secondary insulating wall, wherein the insulating wall fixing device is configured to couple the primary insulating wall and the secondary insulating wall, the insulating wall fixing device comprising:

a base socket;
and
a securing stud inserted into the base socket,
wherein the base socket comprises an insertion hole through which the securing stud is inserted into the base socket and an interior space in which one end of the securing stud is settled;
wherein the securing stud comprises an insertion body portion inserted into the interior space of the base socket through the insertion hole, a fastener portion protruding from the insertion body portion of the securing stud and a disk-shaped seat portion outwardly protruding from a circumference of the fastener portion,
wherein the insertion body portion has a spherical shape and comprises multiple leg members divided by one or more grooves,
wherein the multiple leg members of the insertion body portion are configured to retract toward the one or more grooves to enter the insertion hole upon inserting the securing stud into the base socket,
wherein the disk-shaped seat portion comprises a periphery seated over an upper surface of the base socket and configured to be welded to a sealing wall provided between the primary insulating wall and the secondary insulating wall,
wherein the interior space of the base socket has a spherical space having an inner diameter greater than the insertion body portion, and there is a gap between the interior space of the base socket and the insertion body portion, and
wherein the securing stud is able to move in six degrees of freedom in the interior space of the base socket.

7 more elements

An insulating wall fixing device for liquefied natural gas storage a liquefied natural gas storage tank comprising a primary insulating wall and a secondary insulating wall that are arranged such that the primary insulating wall is placed over the secondary insulating wall, wherein the insulating wall fixing device is configured to couple the primary insulating wall and the secondary insulating wall, the insulating wall fixing device comprising:

a securing stud, one end of which has a spherical shape;
and
a base socket having an interior space configured to receive the one end of the securing stud therein,
wherein the interior space of the base socket has a spherical shape such that the securing stud is rotatable with the one end of the securing stud received in the base socket;
wherein the base socket comprises an insertion hole through which the securing stud is inserted into the base socket, the insertion hole having a smaller diameter than the one end of the securing stud;
wherein the securing stud comprises a groove such that the one end of the securing stud is configured to retract to enter the insertion hole upon inserting the securing stud into the base socket;
wherein the securing stud comprises a fastener portion protruding from the one end and a seat portion outwardly protruding from a circumference of the fastener portion,
wherein when the securing stud is settled in the interior space of the base socket, the seat portion of the securing stud comprises a periphery seated over an upper surface of the base socket and configured to be welded to a sealing wall provided between the primary insulating wall and the secondary insulating wall,
wherein the interior space of the base socket has a spherical space having an inner diameter greater than the one end of the securing stud, and there is a gap between the interior space of the base socket and the one end of the securing stud, and
wherein the securing stud is able to move in six degrees of freedom in the interior space of the base socket.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/311,492Filed 18 Dec 2019
Priority: KR 10-2018-017019027 Dec 2018
Published: US 2022/0018497 A120 Jan 2022
Granted: 30 Apr 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification21 codes

F17C 3/027
Bulk storage in barges or on ships: wallpanels for so-called membrane tanks
F17C 13/001
Details of vessels or of the filling or discharging of vessels: thermal insulation specially adapted for cryogenic vessels
F16B 37/043
Releasable devices: with snap action
B63B 25/16
Closed: heat-insulated