Double-layer thin-wall trough steel bar all-welded annular vacuum container

Abstract

The invention relates to a double-layer thin-wall trough steel bar all-welded vacuum container. Inconel625 nickel-based material with high resistivity and great mechanical property is selected to act as material of the container. The whole container comprises 20 D-shaped cross section fan-shaped segments, and the container wall is mainly formed by an internal wall, an external wall and reinforcing ribs through welding. The container adopts a thin-wall structure, and thickness of the internal and external walls is 5mm. Multiple reinforcing ribs are arranged between the two layers of walls. The trough steel form reinforcing ribs are used and the reinforcing ribs are connected with the external wall in a plug welding mode. Trough steel is relatively wide and is easy to be aligned with the plug welding holes on the external wall, and the external wall is thin so that welding is easier. The material with high resistivity and great mechanical property is selected, and the thin-wall structure and the structure of double walls and multiple interlayer reinforcing ribs are adopted so that the container is enabled to be simple in structure and can meet the strength and annular resistance requirement of a conventional magnet nuclear fusion experiment device.

Description

technical field [0001] The invention relates to an annular vacuum container fully welded with double-layer thin-wall groove steel bars, in particular to a vacuum container suitable for the field of nuclear fusion devices. Background technique [0002] During the operation of modern conventional magnet fusion experimental devices, since the plasma-operated annular vacuum vessel is in a complex electromagnetic environment, its structure must meet the engineering and physical design requirements of conventional magnet nuclear fusion experimental devices, and there must be sufficient The strength bears the influence of weight, air pressure, cold and hot medium pressure, temperature rise, various electromagnetic force impacts, etc., and must meet the corresponding electromagnetic parameter requirements. The most important requirement is to have a sufficiently high hoop resistance to facilitate Gas breakdown and establishment of initial plasma current in a vacuum vessel. Generall...

AI Technical Summary

Problems solved by technology

Generally, the vacuum container is made of stainless steel. The overall structural strength is enhanced by increasing the wall thickness of the container, and the hoop resistance value is increased by using bellows sections or segmented insulation forms. However, these methods will not only increase the size and weight of the container, It also makes the container structure complex and difficult to process

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