Watertight and thermally insulating tank built into a bearing st

Details Watertight and thermally insulating tank built into a bearing st Watertight and thermally insulating tank built into a bearing st

1995-09-18

1996-12-24

Basinger, Sherman

Ships

Building

Freighters

220415, 220450, 220901, B63B 2516

Patent

active

055865135

ABSTRACT:
A watertight, thermally insulating tank built into a bearing structure and including a primary watertight barrier contacting material within the tank and including strakes having edges turned upwardly towards an interior of the tank. A secondary watertight barrier is positioned between the primary watertight barrier and the bearing structure. The tank includes primary and secondary insulating barriers. The insulating barriers are alternately arranged with the watertight barriers. A weld support is mechanically held on the primary insulating barrier and forms an expansion joint. The strakes are butt-welded to two faces of the weld support. The secondary watertight barrier and the insulating barriers each include prefabricated panels fixed to the bearing structure. A zone at a junction between two adjacent panels is filled in at least to ensure continuity of the secondary watertight barrier. Each prefabricated panel is formed of a first rigid plate including a layer of thermal insulant. The panels and the thermal insulant together form the secondary insulating barrier. A flexible sheet is bonded substantially to the entire surface of the thermal insulant. The flexible sheet includes at least one continuous fine metal foil forming the secondary watertight barrier. A second layer of thermal insulant at least partially covers the flexible sheet and is bonded thereto. A second rigid plate covers the second thermal insulant layer and together they form the primary insulation barrier.

REFERENCES:
patent: 3399800 (1968-09-01), Gilles
patent: 3785320 (1974-01-01), Bourgeois et al.
patent: 4065019 (1977-12-01), Letourneur
patent: 4747513 (1988-05-01), Betille et al.
patent: 5269247 (1993-12-01), Jean
patent: 5447112 (1995-09-01), Jean

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