Abstract: An inner and outer tank connection device for a cryogenic storage tank includes a suspension belt; a first connection assembly for connecting the outer tank, wherein the first connection assembly includes a first connection seat and a first connection member, and the first connection seat is configured for connecting the outer tank and the first connection seat is provided with a first limiting seat, the first connection member is rotatably connected to one end of the suspension belt, and the first connection member is provided with a first limiting portion, and the first limiting portion fits with the first limiting seat to limit the first connection member from twisting on the first connection seat with the suspension belt as a rotation axis; and a second connection assembly for connecting the inner tank, wherein the second connection assembly is rotatably connected to another end of the suspension belt.

Abstract: A cryogenic storage tank includes an inner tank, a shell and two support assemblies supported between the inner tank and the shell. The two support assemblies are provided on two opposite ends of the inner tank along the axis of the inner tank. The support assemblies all include a plurality of support members, and the plurality of support members of each support assembly are symmetrically provided with respect to the vertical centre axis plane of the inner tank, and each of the upper side and the lower side of the horizontal centre axis plane of the inner tank is provided with support members; each support member includes an inner end connected to the outer end of the inner tank and an outer end connected to the inner wall of the shell, and the support member is located in a different plane from the axis of the inner tank.