Deep-cooling high-pressure hydrogen storage bottle

Abstract

The invention discloses a deep-cooling high-pressure hydrogen storage bottle. The deep-cooling high-pressure hydrogen storage bottle comprises an inner cylinder body and an outer cylinder body. The inner cylinder body is arranged in the outer cylinder body through a supporting component. An interlayer between the inner cylinder body and the outer cylinder body is vacuumized to form a vacuum heat insulation layer. An inner bottle opening with internal threads is formed in a sealing head of the inner cylinder body. A bottle opening sealing piece is connected to the interior of the inner bottle opening in a threaded mode. The edge of the inner bottle opening and the threaded section of the bottle opening sealing piece are welded and sealed. An L-shaped first hydrogen channel is formed in thebottle opening sealing piece. An inner end opening of the first hydrogen channel is located on the inner end surface of the bottle opening sealing piece, and an outer end opening of the first hydrogenchannel is located on the side wall of the outer end of the bottle opening sealing piece. A first communicating pipeline which surrounds the bottle opening sealing piece is arranged in the vacuum heat insulation layer and penetrates through the outer cylinder body outwards. An inner end opening of the first communicating pipeline is in welding communication with the outer end opening of the firsthydrogen channel. The deep-cooling high-pressure hydrogen storage bottle is long in service life and good in heat insulation performance.

Description

technical field [0001] The invention relates to the field of hydrogen storage pressure vessel equipment, in particular to a cryogenic high-pressure hydrogen storage bottle for storing supercritical hydrogen. Background technique [0002] Due to the special thermophysical properties of hydrogen, hydrogen will be in a supercritical state under the simultaneous action of ultra-low temperature (below 33.19K) and high pressure (above 1.315MPa). The hydrogen storage duration of the hydrogen storage container is 5 to 10 times that of the traditional liquid hydrogen storage technology, and due to its high pressure characteristics, there is no need to pressurize the supercritical hydrogen after gasification. The structure of the existing cryogenic high-pressure hydrogen storage bottle for storing supercritical hydrogen includes: an inner cylinder and an outer cylinder, the inner cylinder is installed in the outer cylinder through a supporting member, and the interlayer between the in...

AI Technical Summary

Problems solved by technology

The bottle mouth seal in the existing cryogenic high-pressure hydrogen storage bottle is fixed in the inner bottle mouth by welding, so that the sealing stability of the bottle mouth seal is not high, so that the service life of the hydrogen storage bottle is greatly shortened; in addition , the existing cryogenic high-pressure hydrogen storage bottle uses a short straight pipe to pass through the vacuum insulation layer, so that the heat is easily transferred to the inner cylinder through the straight pipe, so that the heat insulation performance of the hydrogen storage bottle is greatly reduced

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