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Current lead wire system for superconducting magnet

A technology of superconducting magnets and current leads, applied in the field of lead systems, can solve the problems of increased thermal resistance of insulating gaskets, unreliable cooling, broken insulating gaskets and heat-conducting parts, etc.

Inactive Publication Date: 2011-07-06
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 path 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

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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 current lead wire, at least one thermal conductive part which is thermally coupled with one end of the current lead wire, a coolant channel passing through the thermal conductive part, and a cooling source communicated with the coolant channel, wherein coolant is delivered in the coolant channel to cool one end of the current lead wire.

Description

technical field [0001] The present invention relates to a lead wire system for a superconducting magnet, and more particularly to a lead wire system for a superconducting magnet with a cryogenic refrigeration system for keeping one end of a current lead electrically connected to a superconducting magnet at a low temperature. 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 e...

Claims

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Application Information

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Patent Type & Authority Applications(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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