A process for embedding the current lead of a large-scale superconducting magnet into the ground layer of the ring segment

Abstract

The invention discloses a process of a grounding layer of an embedded ring section of a large-scale super-conducting magnet current lead. The process comprises the following steps of cutting a conductive felt into a band shape, and then winding two layers of conductive felts to a silicon rubber O ring to obtain a conductive O ring; winding the outer layer of a current lead main insulating layer with two layers of conductive felts to be used as a grounding layer; mounting the conductive O ring at the tail end of the grounding layer, adjusting the conductive O ring to enable the conductive O ring to be tightly fitted with the conductive felts; then winding the two sides of the conductive O ring with a pre-impregnated band with a certain thickness by adopting a flat packaging way, filling related gaps by glass wires, and then performing overall curing of the pre-impregnated band; and cutting screw threads on the cured pre-impregnated band to be used as a screw thread reinforcing layer, and then screwing the embedded ring in the appointed position of the screw thread reinforcing layer. By virtue of the process, generation of eddy current can be avoided, so that damage to insulation caused by the eddy current can be avoided.

Description

technical field [0001] The invention relates to the field of thermonuclear fusion, in particular to a process for embedding a large-scale superconducting magnet current lead into a ground layer of a ring segment. Background technique [0002] Thermonuclear fusion will provide mankind with inexhaustible clean energy, and the International Thermonuclear Test Reactor (ITER) plan will be built in the next ten years. The high-temperature superconducting current leads supply power to its giant low-temperature superconducting magnets. The current leads must be able to carry up to 30kV insulation in the fault state. The ground plane of the embedded ring system is located at the transition position of high voltage and ground planes, room temperature and low temperature, vacuum and atmosphere, The surrounding structure is complex and the operating space is narrow. Combining the above factors makes the design of this type of mechanism more difficult, and its grounding layer design and...

AI Technical Summary

Problems solved by technology

The high-temperature superconducting current leads supply power to its giant low-temperature superconducting magnets. The current leads must be able to carry up to 30kV insulation in the fault state. The ground plane of the embedded ring system is located at the transition position of high voltage and ground planes, room temperature and low temperature, vacuum and atmosphere, The surrounding structure is complex and the operating space is narrow

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