Disclosed is an insulation system for a liquefied natural gas storage tank. According to the present invention, the insulation system for a liquefied natural gas storage tank includes: a first sealing wall directly coming into contact with liquefied natural gas of an extremely low temperature; a first insulation layer installed on the outside of the first sealing wall; a second sealing wall installed on the outside of the first insulation layer; a second insulation layer installed on the outside of the second sealing wall and fixed to an inner wall of a hull; and an invar tube installed at each corner of a liquefied natural gas storage tank, wherein the first sealing wall and the second sealing wall are fixed to the invar tube. The first insulation layer includes: a first connection box installed to be in contact with the invar tube; and multiple first insulation panels installed in a space of the first insulation layer except for the first connection box. The second insulation layer includes: a second connection box installed to be in contact with the invar tube; and multiple second insulation panels installed in the space of the second insulation layer except for the second connection box. The first connection box is installed in a form in which a cross section facing the first insulation panel is stepped or in a form in which the cross section is diagonally inclined.

    액화천연가스 저장탱크의 단열시스템이 개시된다. 본 발명에 따른 액화천연가스 저장탱크의 단열시스템은, 극저온의 액화천연가스와 직접 접촉하는 1차 밀봉벽; 1차 밀봉벽의 외측에 배치되는 1차 단열층; 1차 단열층의 외측에 배치되는 2차 밀봉벽; 및 2차 밀봉벽의 외측에 배치되어 선체 내벽에 고정되는 2차 단열층; 및 액화천연가스 저장탱크의 각 코너부에 마련되어 1차 밀봉벽 및 2차 밀봉벽이 고정되는 인바 튜브;를 포함하고, 1차 단열층은, 인바 튜브와 접하도록 배치되는 1차 연결박스; 및 1차 연결박스를 제외한 1차 단열층의 공간에 배치되는 다수의 1차 단열패널을 포함하고, 2차 단열층은, 인바 튜브와 접하도록 배치되는 2차 연결박스; 및 2차 연결박스를 제외한 2차 단열층의 공간에 배치되는 다수의 2차 단열패널을 포함하며, 1차 연결박스는 1차 단열패널과 마주하는 단면이 계단식으로 단차진 형태 또는 사선으로 경사진 형태로 마련된다.


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    Title :

    Insulation System For Liquefied Natural Gas Storage Tank


    Additional title:

    액화천연가스 저장탱크의 단열시스템


    Contributors:

    Publication date :

    2019-11-04


    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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