Superconducting switch mechanically operated by large superconducting magnet

Abstract

The invention discloses a superconducting switch mechanically operated by a large superconducting magnet. The superconducting switch comprises a low-temperature container (1), an insulating pressing block (2), a first embedded ring (3), a first bellows (4), a second bellows (5), a second embedded ring (6), a first superconducting cable insulating layer (7), a first superconducting cable (8), a second superconducting cable (9), a second superconducting cable insulating layer (10), a third embedded ring (11), a spring (12), a bolt assembly (13), an upper stainless steel plate (14), an upper copper block (15), a lower copper block (16), a lower stainless steel plate (17), a first insulating support (18) and a second insulating support (19); superconducting cables are soldered into the upper copper block and the lower copper block respectively, the insulating pressing block and the spring and bolt assemblies control the upper copper block and the lower copper block to be closed and separated, the corrugated pipe has certain flexibility and facilitates vertical movement of the upper copper block, and the embedded ring is matched with the insulation structure to have vacuum isolation andhigh-voltage insulation performance.

Description

technical field [0001] The invention relates to the fields of magnetic confinement fusion and large superconducting magnets, in particular to a mechanically operated superconducting switch of the large superconducting magnets. Background technique [0002] Thermonuclear fusion will provide mankind with inexhaustible clean energy, and the International Thermonuclear Test Reactor (ITER) program will be built in the next ten years. The superconducting magnet provides the required magnetic field for the tokmak device to achieve the purpose of controlling and confining the high-temperature plasma. There are two basic modes of operation of superconducting magnets, namely power supply mode and closed-loop operation mode. In the power supply mode, the power supply of the superconducting magnet is a low-voltage and high-current regulated or steady-current power supply. In order to ensure the stable operation of the superconducting magnet, the ripple ratio of the power supply is gene...

AI Technical Summary

Problems solved by technology

Since the superconducting magnet involved in magnetic confinement fusion is a giant superconducting magnet, the design of this type of superconducting switch also needs to consider the rapid release of superconducting magnet energy, high-voltage insulation, sufficiently small superconducting joint resistance, eddy current loss and Operating space and other factors, so the design of this type of superconducting switch is extremely difficult

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