The present invention relates to a liquefied natural gas tank with a double barrier structure comprising a secondary insulation wall installed on an inner wall of a hull and a primary insulation wall installed in an upper portion of the secondary insulation wall. Provided is an insulation wall fixing apparatus of a liquefied natural gas tank. The fixing apparatus for mutually fixing the primary insulation wall and the secondary insulation wall comprises: a base socket fixed to an upper portion of the secondary insulation wall; a stud having a lower end fixed to the base socket and extending upward; a flat washer inserted into the stud and supported by a lower plate of the primary insulation wall; a fixating nut fastened to an upper end of the stud to fix the flat washer; and a compression spring inserted into a groove formed along an inner circumferential surface of a penetration part, formed to allow the stud to pass through the center of the flat washer and to be inserted thereinto, and fixed thereto. The compression spring is capable of supporting the outer circumferential surface of the stud to absorb relative movement between the stud and the flat washer or load therebetween.

    본 발명은 선체 내벽에 설치되는 2차 단열벽과 2차 단열벽의 상부에 설치되는 1차 단열벽을 포함하는 이중 방벽 구조의 액화천연가스 저장탱크에 있어서, 1차 단열벽과 2차 단열벽을 상호 고정시키는 고정장치는, 2차 단열벽의 상부에 고정되는 베이스 소켓; 하단부가 베이스 소켓에 고정되어 상방으로 연장되는 스터드; 스터드에 끼워지며 1차 단열벽의 하부 플레이트에 의해 지지되는 플랫와셔; 스터드의 상단부에 체결되어 플랫와셔를 고정시키는 고정너트; 및 플랫와셔의 중심에 스터드가 관통 삽입될 수 있도록 형성되는 관통부의 내주면을 따라 형성되는 홈에 끼워져 고정되는 압축스프링을 포함하고, 상기 압축스프링은 스터드의 외주면을 지지하여 상기 스터드와 상기 플랫와셔 간의 상대적인 움직임 또는 하중을 흡수하는 것을 특징으로 하는, 액화천연가스 저장탱크의 단열벽 고정장치를 제공한다.


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    Title :

    Insulation Wall Securing Device for LNG Storage Tank


    Additional title:

    액화천연가스 저장탱크의 단열벽 고정장치


    Contributors:

    Publication date :

    2021-04-20


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / F16F SPRINGS , Federn / F17C Behälter zum Aufnehmen oder Speichern verdichteter, verflüssigter oder verfestigter Gase , VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES



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