Lined tank and method for fabricating the same
AssigneeTokyo Shibaura Denki Kabushiki Kaisha
InventorShoichi Orii
Life of this patent
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Abstract
A lined tank comprises a plurality of lining plates attached to the inside surface of the tank, concrete shutterings disposed inside of the lining plates and embedded in concrete, shaped steel members embedded in the concrete to which the shutterings are attached, backing plates attached to the embedded shaped steel members at the attached portions of the lining plates, leakage detecting channels which are defined by the above elements, and means connected to said leakage detecting channels and adapted to detect the leakage of the lined tank.
Claims7
A lined tank made of concrete comprising:
- a plurality of lining plates forming an interior surface of said tank;
- a plurality of concrete shutterings embedded in concrete welded to said lining plates for supporting said linings;
- a plurality of steel members embedded in said concrete welded to support said concrete shutterings;
- a plurality of backing plates adjacent said shutterings and spaced apart therefrom;
- said backing plates, concrete shutterings and steel members forming a plurality of leakage detecting channels so as to detect leakage from the tank at portions where said lining plates are welded to said backing plates, each of said leakage detecting channels extending along the periphery of a respective backing plate to form an independent leakage detecting channel for each of said plates.
In a method for fabricating a lined tank in which a space between inside and outside molding frames of the tank is filled with concrete and after the setting thereof lining plates are attached to the concrete;
- the improvement which comprises the steps of forming a unit structure by elements comprising concrete shutterings, backing plates, embedded shaped steel members and a plurality of leakage detecting channels defined by said elements, each of said leakage detecting channels extending along the periphery of a respective backing plate to form an independent leakage detecting channel for each of said plates;
- securing said unit structure to the inside molding frame by a member for reinforcing the molding frame and a member for clamping said molding frame;
- interconnecting a plurality of said unit structures;
- connecting said unit structures to the outside molding frame by means of said clamping member;
- filling concrete into a space between said inside and outside molding frames of the tank;
- and attaching said lining plates to the inside wall of the tank after the concrete has set.
Dependencies are inferred from the claim text.