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Current lead wire system for superconducting magnet

A technology of superconducting magnets and leads, which is applied in the direction of superconducting magnets/coils, superconducting elements, superconducting/high-conducting conductors, etc. Unreliable cooling and other issues

Inactive Publication Date: 2012-11-28
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the thermal resistance of the insulating spacer increases as the temperature of the heat conduction channel decreases
In addition, the welding of the insulating spacer to the heat-conducting part may break due to mechanical and thermal stress, resulting in unreliable cooling

Method used

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  • Current lead wire system for superconducting magnet
  • Current lead wire system for superconducting magnet
  • Current lead wire system for superconducting magnet

Examples

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Embodiment Construction

[0014] Several embodiments of the invention relate to superconducting magnet lead wire systems. The lead system includes a positive current lead, a negative current lead, and a cryogenic refrigeration system. The positive and negative current leads each have one end electrically connected to a power supply (hereinafter referred to as "hot end"), and the other end electrically connected to the superconducting magnet (hereinafter referred to as "cold end"). The cryogenic refrigeration system includes a thermally conductive element thermally coupled to the cold end of the conductive wire, and a coolant channel passing through the thermally conductive element. A liquid coolant flows through the coolant channel, absorbs heat from the cold end of the conductive wire, and evaporates into a gas to carry away the heat, thereby keeping the cold end of the conductive wire at a low temperature without transferring heat to the superconducting magnet. The current is transmitted to the posi...

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Abstract

The invention discloses a current lead wire system for a superconducting magnet. The current lead wire system comprises a positive current lead wire, a negative current lead wire, first and second thermal conductive parts thermally coupled with one ends of the positive and negative current lead wires respectively, a coolant channel passing through the first and second thermal conductive parts, and a cooling source communicated with the coolant channel. The coolant is delivered in the coolant channel so as to cool one ends of the positive and negative current lead wires.

Description

technical field [0001] Embodiments of the present invention relate to a lead wire system for a superconducting magnet, especially a lead wire system for a superconducting magnet with a cryogenic refrigeration system to maintain a low temperature at one end of a current lead electrically connected to the superconducting magnet. Background technique [0002] When the superconducting magnet is kept at a suitable low temperature (hereinafter referred to as "superconducting temperature"), the electric current is transmitted with the superconducting magnet, and the electric resistance thereon is zero. However, if the ambient temperature is higher than the superconducting temperature, the resistance of the magnet increases and losses will occur. Therefore, it is necessary to configure a cooling device for the superconducting magnet to ensure that the superconducting magnet works at the superconducting temperature. [0003] The superconducting magnet includes a superconducting coil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F6/06H01F6/00H01F6/04
CPCH01F6/04H01B12/16H01F6/06H01F6/00H01F6/065Y02E40/647F25D3/10
Inventor 赵燕黄先锐武安波伊万格拉斯·T·拉斯卡里斯保尔·S·拖马斯杨潮潘军S·迈恩
Owner GENERAL ELECTRIC CO
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