The present invention relates to a liquefied gas storage tank of a dual insulation structure including a secondary insulation wall comprising a plurality of secondary panels installed on an inner wall of a vessel body, and a primary insulation wall installed in an upper part of the secondary insulation wall and comprising a plurality of primary insulation panels. The liquefied gas storage tank includes an insulation wall fixing device installed in an upper part of the secondary insulation wall to fix the primary insulation wall. The insulation wall fixing device of the liquefied gas storage tank includes: a base socket placed and fixed in a groove formed in an upper part of the secondary insulation panels; a stud having a lower part combined with the base socket to be extended upward; first and second flat washers inserted into the stud and supported by a lower plate of the primary insulation panels; a bearing member interposed between the first and second flat washers; and a locking nut coupled with an upper part of the stud to fix the flat washer while pressing the same downward. Therefore, the present invention is capable of considerably improving the fatigue lifespan of the insulation wall fixing device.
본 발명은 선체 내벽에 설치되는 다수의 2차 단열패널로 이루어지는 2차 단열벽과, 2차 단열벽의 상부에 설치되며 다수의 1차 단열패널로 이루어지는 1차 단열벽을 포함하는 이중 단열 구조의 액화가스 저장탱크에 있어서, 2차 단열벽의 상부에 설치되어 1차 단열벽을 고정시키는 단열벽 고정장치를 포함하고, 상기 단열벽 고정장치는, 2차 단열패널의 상부에 형성되는 홈에 안착되어 고정되는 베이스소켓; 하단부가 베이스소켓과 결합되어 상방으로 연장되는 스터드; 스터드에 끼워지며 1차 단열패널의 하부플레이트에 의해 지지되는 제1 플랫와셔 및 제2 플랫와셔; 제1 플랫와셔와 제2 플랫와셔 사이에 개재되는 베어링부재; 및 스터드의 상단부에 체결되어 플랫와셔를 하방으로 가압하며 고정시키는 락킹너트를 포함하는, 액화가스 저장탱크의 단열벽 고정장치를 제공한다.
INSULATION WALL SECURING DEVICE FOR LIQUEFIED GAS STORAGE TANK
액화가스 저장탱크의 단열벽 고정장치
2021-11-17
Patent
Electronic Resource
Korean
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