TANK FOR STORAGE OF LNG OR OTHER CRYOGENIC FLUIDS

摘要

A tank (1) for storage of LNG or other cryogenic fluids, comprising: an inner tank (2) having a bottom (2a), an inner side wall (2b) extending upwards to an optional insulating roof (2f); an outer tank (3) having a bottom (3a), an outer side wall (3b) extending upwards around the inner tank to a level above said inner tank, an outer gas tight lining (3c) on or in the outer side wall, and an outer roof construction (3d) above said inner tank; insulating material (4) between said inner tank and said outer tank; and at least one feedthrough (5) for filling and draining, distinguished in that the inner tank has side walls (2b) consisting of an inner concrete wall (2c), an intermediate low temperature ductile tight layer (2d), and an outer prestressed concrete wall (2e), which side walls act as one unit in operation, but wherein the inner side wall (2e) can contract freely during cooling and the outer side wall ( 2e) can expand freely at increased temperature, as said side walls are supported freely and the outer side wall (2e) is adaptedly prestressed.