Superconducting magnet and superconducting magnet system

一种超导磁体、超导线圈的技术，应用在超导磁体/线圈、超导体元素的用法、磁性物体等方向，能够解决削弱真空装置可靠性、增加制造成本等问题

Active Publication Date: 2012-04-11
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is necessary to connect the wires from the vacuum cover, which increases the manufacturing cost and may weaken the reliability of the vacuum device

Method used

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  • Superconducting magnet and superconducting magnet system
  • Superconducting magnet and superconducting magnet system
  • Superconducting magnet and superconducting magnet system

Examples

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Embodiment Construction

[0015] One embodiment of the present invention discloses a superconducting magnet including a quench protection circuit. In one example, the quench protection circuit includes a quench heater group thermally coupled with the superconducting coil and a superconducting current limiter, and the superconducting current limiter is connected in series with the quench heater group for Then limit the current flowing through the quench heater bank. The quench heater group and the superconducting current limiter are connected in parallel with at least one superconducting coil. When the superconducting coil is quenched, the quench voltage at both ends of the superconducting coil rises, which energizes the quench heater group and generates heat, thereby normalizing the part of the superconducting coil thermally coupled with the quench heater group, thereby dispersing thermal energy, preventing damage to the superconducting magnet. The "normalization" referred to in this paper refers to ...

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Abstract

The invention relates to a superconducting magnet and a superconducting magnet system. The superconducting magnet comprises a superconducting coil and a quenching protection circuit which is connected with the superconducting coil in parallel, wherein the quenchinging protection circuit comprises a quenching heater group which is in heat coupling with the superconducting coil and a superconducting current limiter which is connected with the quenching heater group in series, the superconducting current limiter has a superconducting state with a resistance value being zero and an impedance state with a normal resistance value, and is used for limiting the current flowing through the quenching heater group.

Description

technical field [0001] The invention relates to a superconducting magnet, in particular to a quench protection circuit for a superconducting coil in a superconducting magnet. Background technique [0002] When the superconducting magnet is kept below a suitable critical temperature, a superconducting magnet is used to transmit electric current, and the electrical resistance across it is zero. If the superconducting magnet coil is connected to the power supply for a period of time to introduce a current to the magnet coil, then the superconducting switch is closed and the power supply is turned off, since the superconducting coil has no resistance, this current will still flow in the coil. This enables the generation of uniform strong magnetic fields in equipment such as magnetic resonance imaging (MRI) systems, generators, etc. [0003] In order to keep the superconducting magnet below the superconducting temperature, a cooling system is required, such as immersing the supe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F6/00H02H5/00H02H9/02H01F6/06
CPCH01F6/02H02H7/001Y02E40/68H02H9/023Y02E40/60
Inventor 武安波徐民风黄先锐
Owner GENERAL ELECTRIC CO
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