Sleeve supporting structure of large liquid hydrogen vacuum double-layer spherical tank

Abstract

A sleeve supporting structure of a large liquid hydrogen vacuum double-layer spherical tank comprises a supporting structure composed of an inner supporting column and an outer supporting structure, an inner tank is supported and suspended in a cavity of an outer tank through the inner supporting column, and the outer tank is supported through the outer supporting structure; a plurality of groups of supporting structures for supporting the inner tank and the outer tank are arranged on the inner tank and the outer tank, and each group of supporting structure consists of an inner supporting column and an outer supporting structure; the inner supporting column comprises a top cover, an inner upper supporting column, an inner lower supporting column and an up-down connecting structure, the top cover is connected to the top of the inner upper supporting column, and the inner upper supporting column and the inner lower supporting column are connected through the up-down connecting structure; the inner upper supporting column is of a three-sleeve structure and comprises an inner upper supporting column outer pipe, an inner upper supporting column middle pipe and an inner upper supporting column inner pipe from outside to inside. The length of the heat conduction section of the pillar is effectively prolonged; meanwhile, convective heat transfer and radiative heat transfer of the supporting structure are effectively reduced, heat leaking into the spherical tank from the supporting structure is remarkably reduced, and therefore the heat insulation performance of the large liquid hydrogen spherical tank is greatly improved.

Description

technical field [0001] The invention relates to the technical field of large-scale liquid hydrogen storage, in particular to a casing support structure of a large-scale liquid hydrogen vacuum double-layer spherical tank. Background technique [0002] Safe, reliable and efficient hydrogen storage technology is the key to realizing the utilization of hydrogen energy. According to the storage principle, hydrogen storage technology is divided into two categories: physical hydrogen storage and chemical hydrogen storage; physical hydrogen storage mainly includes liquefaction storage, high-pressure storage, and low-temperature compression storage. Chemical hydrogen storage includes metal hydride hydrogen storage, activated carbon adsorption storage, carbon fiber and carbon nanotube storage, etc. Considering the mass density, bulk density and hydrogen storage cost, liquid hydrogen storage is an extremely ideal hydrogen storage method. [0003] The storage tank used for liquid hydro...

AI Technical Summary

Problems solved by technology

Domestic companies have successfully developed small and medium-sized liquid hydrogen storage tanks, but they are all horizontal liquid hydrogen tankers or cylindrical storage tanks. There are few reports on the development of large-scale liquid hydrogen vacuum double-layer spherical tanks. The development of spherical tanks is still in the exploratory stage, and one of the core technical bottlenecks is the design of the tank support structure

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