# US 12,111,016 B2 · Corner structure of liquefied gas storage tank > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,111,016 B2 - Document ID: US12111016B2 - Status: Granted - Kind: B2 - Application number: 17/783,646 - Filed: 2020-09-02 - Published: 2022-12-08 - Granted: 2024-10-08 - Earliest claimed: 2019-12-10 - Assignees: Korea Gas Corporation - Applicants: Korea Gas Corporation - Inventors: Ihn Soo Yoon; Eun Young Yun; Young Kyun Kim; Byung Taek Oh; Yeong Beom Lee; Hae Chul Han; Ki Ho Yim; Yong Keun Yoon - Web page: https://patentgrep.com/patent/US12111016B2 ## CPC - B63B 25/16: heat-insulated (insulating panelling B63B3/68; heating or cooling B63J) - F17C 3/027: {Wallpanels for so-called membrane tanks} - B63B 25/12: closed - F17C 2201/0157: Polygonal - F17C 2201/052: large (>1000 m3) - F17C 2203/0333: Polyurethane - F17C 2203/0358: in form of panels - F17C 2221/033: Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG - F17C 2223/0153: Liquefied gas, e.g. LPG, GPL - F17C 2223/033: Small pressure, e.g. for liquefied gas - F17C 2260/036: Avoiding leaks - F17C 2270/0107: Wall panels - B63B: SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING (arrangements of vessel ventilation, heating, cooling, or air-conditioning B63J2/00; floating substructures as supports of dredgers or soil-shifting machines E02F9/06) - F17C: VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES (storing fluids in natural or artificial cavities or chambers in the earth B65G5/00; construction or assembling of bulk storage containers employing civil-engineering techniques E04H7/00; variable-capacity gas-holders F17B; liquefaction or refrigeration machines, plants, or systems F25) ## Abstract A corner structure of a liquefied gas storage tank is provided, wherein the corner structure is installed at a corner of the storage tank for storing liquefied gas to support sealing walls. The corner structure includes: a stationary member secured to an inner surface of a hull structure wall; a movable member disposed on the stationary member such that the sealing walls are joined thereto; and an insulating member interposed between the sealing walls and the hull structure wall. The stationary member includes a stationary member body bent at a curved portion thereof in an opposite direction to the movable member, and the movable member includes a movable member body bent at a bent portion thereof in an opposite direction to the stationary member. The stationary member and the movable member are coupled to each other by a fastening member that penetrates the curved portion and the bent portion. ## Claims ### Claim 1 A corner structure disposed at a corner of a liquefied gas storage tank and supporting a sealing wall adapted to prevent leakage of liquefied gas, the corner structure comprising: a stationary member secured to an inner surface of a hull structure wall; a movable member disposed on the stationary member such that the sealing wall is joined to the movable member; and an insulating member interposed between the sealing wall and the hull structure wall, wherein the stationary member comprises a stationary member body bent at a curved portion thereof in an opposite direction to the movable member and the movable member comprises a movable member body bent at a bent portion thereof in an opposite direction to the stationary member; and wherein the stationary member is coupled to the movable member by a fastening member penetrating the curved portion and the bent portion, wherein one movable member is coupled to the hull structure wall through multiple stationary members, and wherein: the stationary members are coupled to a central portion and opposite ends of the movable member, respectively; the movable member body is formed at the central portion and the opposite ends with coupling holes through which fastening members pass, respectively, for coupling between the stationary members and the movable member; and the coupling hole formed at the central portion of the movable member body has a circular shape and the coupling holes formed at the opposite ends of the movable member body have an elongated-hole shape extending in a longitudinal direction of the movable member body. ### Claim 2 (depends on 1) The corner structure according to claim 1, wherein: the stationary member comprises a secured portion fixedly mounted on the hull structure wall and flanges formed at opposite ends of the stationary member body to be coupled to the secured portion; and the secured portion comprises a stud inserted into securing holes formed in the flanges. ### Claim 3 (depends on 2) The corner structure according to claim 2, wherein the stationary member further comprises a fitting member of plywood interposed between the secured portion and the flanges upon coupling between the secured portion and the flanges. ### Claim 4 (depends on 1) The corner structure according to claim 1, wherein the stationary member further comprises a stationary member-side fastening block disposed at the curved portion of the stationary member body to allow the fastening member having passed through the movable member body and the stationary member body to be fastened to the stationary member-side fastening block, the stationary member-side fastening block being disposed on an opposite surface to the movable member at the curved portion of the stationary member body. ### Claim 5 (depends on 4) The corner structure according to claim 4, wherein the movable member further comprises a movable member-side fastening block at the bent portion of the movable member body to allow the fastening member having passed through the movable member body and the stationary member body to be inserted into the movable member-side fastening block, the movable member-side fastening block being disposed on an opposite surface to the stationary member at the bent portion of the movable member body. ### Claim 6 (depends on 1) The corner structure according to claim 1, wherein: the movable member further comprises a joining portion to which the sealing wall is joined; and the joining portion comprises a primary joining portion and a secondary joining portion with a height different therebetween, and the sealing wall comprises a primary membrane directly contacting liquefied gas and a secondary membrane spaced apart from the primary membrane by a constant distance, the primary membrane being joined to the primary joining portion and the secondary membrane being joined to the secondary joining portion. ### Claim 7 (depends on 6) The corner structure according to claim 6, wherein the primary joining portion is formed on a protrusion protruding from a surface of the movable member body and the secondary joining portion is formed on the surface of the movable member body. ### Claim 8 (depends on 1) The corner structure according to claim 1, wherein the movable member further comprises a high density insulator disposed at the bent portion of the movable member body and supporting the sealing wall. ### Claim 9 A liquefied gas storage tank including a corner structure disposed at a corner thereof to support a sealing wall adapted to prevent leakage of liquefied gas, the corner structure comprising: a stationary member secured to an inner surface of a hull structure wall; a movable member disposed on the stationary member such that the sealing wall is joined to the movable member, wherein the movable member comprises a movable member body bent at a bent portion thereof in an opposite direction to the stationary member; and an insulating member interposed between the sealing wall and the hull structure wall, and wherein the stationary member is coupled to the movable member by a fastening member penetrating the stationary member and the movable member, wherein one movable member is coupled to the hull structure wall through multiple stationary members, and wherein: the stationary members are coupled to a central portion and opposite ends of the movable member, respectively; the movable member body is formed at the central portion and the opposite ends with coupling holes through which fastening members pass, respectively, for coupling between the stationary members and the movable member; and the coupling hole formed at the central portion of the movable member body has a circular shape and the coupling holes formed at the opposite ends of the movable member body have an elongated-hole shape extending in a longitudinal direction of the movable member body. ### Claim 10 (depends on 9) The liquefied gas storage tank according to claim 9, wherein the sealing wall comprises a primary membrane directly contacting liquefied gas and a secondary membrane spaced apart from the primary membrane by a constant distance, and a support board is interposed between the primary membrane and the secondary membrane to maintain a constant distance therebetween.