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    • 3. 发明授权
    • Double wall cargo tank for transporting cryogenics
    • 用于运输低温物料的双层货舱
    • US3978808A
    • 1976-09-07
    • US396302
    • 1973-09-11
    • Joseph J. CuneoIvan Mertl
    • Joseph J. CuneoIvan Mertl
    • B63B25/16
    • B63B25/16Y10S220/901Y10S220/918
    • A double wall tank for the transportation of cryogenic materials such as liquefied natural gas by ship. The inner wall of the tank is the primary barrier and defines the cargo space. The primary barrier is substantially planar and is liquid and gas-impervious. A plurality of primary structural support webs are welded to the inner surface of the primary barrier and extend into the cargo space. The primary structural support webs preferably comprise a plurality of web rings extending between the centerline longitudinal bulkhead and the sides of the inner tank and having plurality of tension trusses extending transversely in the inner tank and connecting opposite sides of the web rings. A plurality of stiffeners are welded to the outer surface of the primary barrier and extend substantially perpendicular to the plane of the primary structural support webs. The outer wall of the tank is the secondary barrier, is spaced from the primary barrier and is supported by the stiffeners. The secondary barrier is formed from thin sheets of metal, is non-self-supporting and is liquid and gas-impervious. Insulation, preferably in the form of a plurality of insulation panels, is located outside of the secondary barrier for thermally insulating the tank.
    • 用于运输船舶等液化天然气等低温材料的双层水箱。 坦克的内壁是主要的障碍,并定义货物空间。 主要屏障基本上是平面的,并且是液体和气体不可渗透的。 多个主要结构支撑腹板焊接到主障碍物的内表面并延伸到货物空间中。 主要结构支撑腹板优选地包括在中心纵向隔板和内部箱体的侧面之间延伸的多个腹板环,并且具有多个在内部箱体中横向延伸并连接腹板环的相对侧面的张力桁架。 多个加强件焊接到主阻挡件的外表面上并且基本上垂直于主要结构支撑腹板的平面延伸。 储罐的外壁是次级隔离物,与主障碍物间隔开并由加强件支撑。 次级阻挡层由薄金属片形成,非自支撑并且是液体和气体不可渗透的。 优选以多个绝缘面板的形式的绝缘件位于辅助屏障的外部,用于使箱体隔热。