Disclosed is an insulation system of a liquefied natural gas storage tank, which can effectively prevent damage to a metal membrane. According to the present invention, the insulation system of a liquefied natural gas storage tank, which includes an insulation wall consisting of a plurality of insulation panels and a sealing wall installed on the insulation wall to seal liquefied natural gas, comprises: a transverse connector installed at a corner portion of the storage tank to support the sealing wall so as to transfer a load applied to the sealing wall to a hull; an insulation box installed on the corner portion of the storage tank to support the transverse connector; and a space insulation member inserted and arranged in a gap formed between the insulation box and an insulation panel (border panel) arranged closest to the corner portion of the storage tank among the insulation panels. The plurality of insulation panels are provided as sandwich panels made of a compound of an insulator and plywood. The border panel is made of high-density polyurethane foam in comparison to the rest of the insulation panels. The space insulation member is provided to have an average thermal contraction amount of the insulation box and the border panel to sequentially allow structural stiffness of the insulation wall at the corner portion of the storage tank.

    액화천연가스 저장탱크의 단열시스템이 개시된다. 본 발명에 따른 액화천연가스 저장탱크의 단열시스템은, 다수의 단열패널로 이루어지는 단열벽과, 단열벽 상에 설치되어 액화천연가스를 밀봉하는 밀봉벽을 포함하는 액화천연가스 저장탱크에 있어서, 저장탱크의 코너부에 설치되어 밀봉벽을 지지함으로써 밀봉벽에 가해지는 하중을 선체로 전달하는 트랜스버스 연결체; 트랜스버스 연결체를 지지하기 위해 저장탱크의 코너부에 설치되는 단열박스; 및 단열박스와 단열패널 중에서 저장ㅌ애크의 코너부에 가장 근접하게 배치되는 단열패널(보더패널) 사이에 형성되는 갭에 삽입 배치되는 공간단열부재를 포함하고, 다수의 단열패널은 단열재와 플라이우드의 복합체로 이루어진 샌드위치 패널로 마련되되, 보더패널은 나머지 단열패널보다 고밀도의 폴리우레탄 폼으로 이루어지며, 공간단열부재는 단열박스와 보더패널의 평균 열수축량을 가지도록 마련되어, 저장탱크의 저장탱크의 코너부에서 단열벽의 구조 강성이 순차적으로 이루어지는 것을 특징으로 한다.


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    Title :

    Insulation System of Liquefied Natural Gas Storage Tank


    Additional title:

    액화천연가스 저장탱크의 단열시스템


    Contributors:

    Publication date :

    2020-08-03


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / 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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