SEALED AND HEAT-INSULATED TANK Russian patent published in 2021 - IPC F17C13/00 B63B25/16 

FIELD: storage; transportation.

SUBSTANCE: invention relates to the field of sealed and heat-insulated tanks with membranes. A sealed and heat-insulated tank for storing or transporting cooled fluid contains load-bearing walls that limit load-bearing structure (1), and tank walls attached to the inner surface of load-bearing walls, in which each tank wall contains sealing membrane and a heat-insulating barrier installed between sealing membrane and the load-bearing wall. The load-bearing structure contains lower load-bearing wall (2) having drainage hole (11) passing through the lower load-bearing wall and allowing drainage of the load-bearing structure. The lower load-bearing wall has protruding flange (10) for directing the liquid flow into the drainage hole. The protruding flange passes the flange along edges of lower load-bearing wall (2) at a distance from edges of the lower load-bearing wall continuously along the entire periphery of the lower load-bearing wall. Protruding flange (10), being covered with the heat-insulating barrier of the tank wall, is attached to the lower load-bearing wall.

EFFECT: increase in the efficiency of the drainage hole by directing the drain or liquid flow to the inner surface of the load-bearing structure in the direction of the drainage hole.

22 cl, 13 dwg