US 12,403,988 B2
Corner structure and liquefied gas storage tank having same
Ki Ho Yim, Seoul (KR); Yong Bum Cho, Seoul (KR); Young Chul Yang, Gyeonggi-do (KR); Heung Seok Seo, Gyeonggi-do (KR); Yeongbeom Lee, Incheon (KR); Youngkeun Yoon, Incheon (KR); Hae Chul Han, Incheon (KR); Byungteak Oh, Incheon (KR); and Eunyoung Yun, Incheon (KR)
Assigned to KOREA GAS CORPORATION, Daegu (KR)
Appl. No. 18/036,890
Filed by KOREA GAS CORPORATION, Daegu (KR)
PCT Filed Jan. 6, 2021, PCT No. PCT/KR2021/000114
§ 371(c)(1), (2) Date May 15, 2023,
PCT Pub. No. WO2022/119045, PCT Pub. Date Jun. 9, 2022.
Claims priority of application No. 10-2020-0167214 (KR), filed on Dec. 3, 2020.
Prior Publication US 2023/0415856 A1, Dec. 28, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. F17C 3/02 (2006.01); B63B 25/16 (2006.01); B65D 90/04 (2006.01)
CPC B63B 25/16 (2013.01) [B65D 90/04 (2013.01); F17C 3/027 (2013.01); F17C 2201/052 (2013.01); F17C 2203/0358 (2013.01); F17C 2221/033 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A corner structure of a liquefied gas storage tank installed at a corner of a storage tank for loading liquefied gas, the corner structure comprising:
two insulating members disposed on an inner surface of a hull structure wall to be oriented in different directions;
a sealing wall preventing leakage of liquefied gas; and
a movable member installed on each of the insulating members and to which the sealing wall is attached,
wherein the movable member is coupled to be slidably displaced with respect to each of the insulating members,
the sealing wall includes a primary membrane and a secondary membrane,
the movable member includes a primary joint portion to which the primary membrane is attached, a secondary joint portion formed to have a step difference from the primary joint portion, to which the secondary membrane is attached, and a flange portion extending from the secondary joint portion for coupling with each of the insulating members,
the flange portion is slidably interposed between upper plates of each of the insulating members formed of two sheets of plywood, so that each of the insulating members and the movable member are combined to be relatively slidably displaceable, and
the secondary joint portion and the flange portion are formed by bending a sheet of metal, and the primary joint portion is formed by adhering a metal rod having a rectangular cross-section or a U-shaped section steel formed by bending a sheet of metal to the secondary joint portion.