Conical concentric-square-shaped labyrinth structure supporting structure

Abstract

The invention provides a conical concentric-square-shaped labyrinth structure supporting structure which comprises an outer tank body of a cryogenic liquefaction container, an inner tank body of the cryogenic liquefaction container, conical concentric-square-shaped labyrinth supporting seat structures and heat insulation pads, and the conical concentric-square-shaped labyrinth supporting seat structures are embedded in the two ends of the outer tank body of the cryogenic liquefaction container and the two ends of the inner tank body of the cryogenic liquefaction container; the conical concentric-square-shaped labyrinth supporting seat structure further comprises a left conical concentric-square-shaped labyrinth connecting seat, a right conical concentric-square-shaped labyrinth connecting seat and threaded holes. The interiors of a left-side conical concentric-square-shaped labyrinth connecting base and a right-side conical concentric-square-shaped labyrinth connecting base are each of a double-vortex-line cavity structure. According to the structure, the heat exchange area is increased while the structural mechanical strength is guaranteed, the gas-solid heat exchange performance is far better than that of a hollow cavity, a low-temperature chamber is additionally arranged in the middle of the support, heat sink is added to the support, the temperature gradient of the support is reduced, the heat insulation performance of the support is improved through low-temperature gas precooling, and cold leakage is further reduced.

Description

technical field [0001] The invention belongs to the technical field of connecting equipment for cryogenic dissolved gas tanks, and in particular relates to a support structure of a conical return labyrinth structure. Background technique [0002] For cryogenic containers such as LNG liquefied gas transport vehicles, the interlayer gap between the outer shell and the inner liner is relatively small, and the inner liner is insulated by wrapping paper. It is necessary to avoid scratching when assembling. In order to ensure the high concentricity of the inner and outer containers, To avoid scratches during assembly, it is necessary to ensure that the inner and outer containers are accurate, stable and easy to assemble when assembling. The steps of the current pairing method are as follows: an iron plate with an arc is placed on the inner side of the outer container, a sliding car is placed on the iron plate, a traction rope is arranged on the sliding car, and a hanging rope is u...

AI Technical Summary

Problems solved by technology

[0004] Existing cryogenic containers adopt a double-layer or multi-layer structure of inner and outer tanks, and the inner and outer tanks need to be supported by connections. In order to reduce the leakage of the inner tank, the conventional solution is to increase the length of the support, select materials with excellent thermal insulation performance, and reduce the cut-off. These three schemes reduce the heat conduction of solids and reduce the leakage of the inner tank. The common points of these three schemes cannot solve the deformation of the inner tank due to the low-temperature contraction and the relative displacement with the outer tank.

[0005] The first solution is to increase the length of the support, increase the distance between the inner and outer tanks or sag the inner tank and protrude the outer tank at the support position. The former method will reduce a large part of the effective volume of the inner tank, although the latter method can Avoid reducing the volume of the inner tank, but the inner tank or the outer tank is in a convex-convex shape, and the structure is complicated, which is very difficult for production and manufacturing

[0006] The second solution is to choose materials with excellent thermal insulation properties. It is well known that the better the conventional thermal insulation properties, the worse their mechanical properties. Materials are relatively scarce and expensive, difficult to manufacture and economical

[0007] The third solution is to reduce the cross-sectional area. When this solution meets the heat insulation requirements, the load on the support will be smaller, and the load on the inner tank must be smaller, so the volume of the inner tank will be smaller, which is not conducive to storing a large amount of cryogenic liquid

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