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Device for protecting superconducting magnet quench

A technology of superconducting magnets and quench protection, applied in superconducting magnets/coils, emergency protection circuit devices, emergency protection devices with automatic disconnection, etc., can solve the problems of complex structure and low reliability, and achieve stable resistance characteristics , strong reliability, easy installation effect

Active Publication Date: 2013-04-03
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The purpose of the present invention is to overcome the problems of complex structure and low reliability of existing superconducting magnet quench protection devices, and propose a new device for superconducting magnet quench protection

Method used

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  • Device for protecting superconducting magnet quench
  • Device for protecting superconducting magnet quench
  • Device for protecting superconducting magnet quench

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0020] figure 1 Shown is Embodiment 1 of the device for quench protection of superconducting magnets in the passive heating protection method of the present invention. The device is composed of a superconducting magnet and a quench protection circuit; the superconducting magnet 2 is composed of one or more superconducting coils 1 . The quench protection circuit 9 includes an energizable spring 3 , a variable resistor 4 , a quench trigger heater 5 , a section protection resistor 6 , a bidirectional protection diode 7 , and a power supply 8 .

[0021] The superconducting magnet 2 with one or more superconducting coils 1 is divided into n sections, n≥1, such as figure 1 Each segment shown comprises one or more superconducting coils 1 connected in series. The energizable spring 3 , the variable resistor 4 , the heater 5 , the segmental resistor ...

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Abstract

A device for protecting superconducting magnet quench comprises a superconducting magnet and a quench protection circuit. When the device protects passive heating of the superconducting magnet, the superconducting magnet (2) composed of a plurality of superconducting coils (1) is divided into n segments, n being not smaller than 1. Each segment includes one or a plurality of superconducting coils (1). Each segment is parallelly connected with serially connected devices such as an electrifiable spring (3), a variable resistor (4), a quench trigger heater (5), a piecewise resistor (6) and a bidirectional protection diode (7). The whole superconducting magnet (2) is connected with a power supply (8) in parallel. When the device protect energy bleeding of the superconducting magnet, the quench protection circuit further comprises a bleeder resistor (14); after sequentially connected in series, an electrifiable spring (12), a variable resistor (13), the bleeder (14) and a bidirectional protection diode (15) are parallelly connected to two ends of the superconducting magnet.

Description

technical field [0001] The invention relates to a device for quench protection of a superconducting magnet. Background technique [0002] Superconducting magnet technology is widely used in fields such as electric power, medicine, scientific experiments and national defense and military industry, and it plays an increasingly important role in national economy and national construction. [0003] Superconducting magnets need to operate at very low temperatures. Only when certain current, magnetic field and temperature conditions are met can superconducting magnets work normally. When the superconducting magnet in operation receives external disturbances, such as vibration, electromagnetic interference, and excessive heat leakage, the superconductor will lose its superconductivity and become a normal resistance, that is, quench. Any superconducting magnet will have a quench phenomenon. When a superconducting magnet is quenched, a large amount of electromagnetic energy stored i...

Claims

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Application Information

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IPC IPC(8): H02H5/00H01F6/00
Inventor 李毅王秋良陈顺中胡新宁
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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