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Current lead wire of superconducting device

A technology of current leads and superconducting devices, which is applied in superconducting devices, superconducting/high-conducting conductors, and usage of superconducting elements. problem, achieve the effect of saving space and increasing the heat transfer path

Inactive Publication Date: 2005-06-08
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The design and structure of the straight rod current lead is simple, but the length often reaches about 1 meter or even longer
This seriously affects the miniaturization of superconducting devices, so that the advantages of superconducting devices cannot be fully displayed

Method used

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  • Current lead wire of superconducting device
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  • Current lead wire of superconducting device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: as figure 1 In the high-temperature superconducting device, a current lead wire with a current of 400A current is provided. The diameter of the copper rod 1 is 12mm. For the same heat transfer path (copper rod length) 1200mm, if a straight rod type is used, the required space The height is 1200mm; if a part of the lead wire adopts the solenoid type, the diameter of the solenoid is 60mm, and the pitch is 20mm, the required space height is only 460mm.

Embodiment 2

[0016] Embodiment 2: as figure 2 , assuming a binary current lead of a low-temperature superconducting device working at 20K with a current of 100A, adopts the operation mode of two-stage refrigeration, the length of the superconducting material 3Bi2212 rod with a diameter of 16mm is 225mm, and a copper rod with a diameter of 6mm The length of material 1 is 1320mm, and the temperature of the joint between copper rod 1 and superconducting material 3 is fixed at 70K. For the same heat transfer path (copper rod length) of 1320mm, if a straight rod type is used, the required space height is 1545mm; if The copper rod part of the lead wire adopts a solenoid type. The diameter of the solenoid is 45mm, the pitch is 16mm, and the required space height is 437mm if it is wound 8 times.

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Abstract

The invention relates to a superconducting device current lead. The shape of the bar copper segment of the current lead is transformed from the straight bar type to solenoid type to saving the space that means fully increasing the heat passage in the limit space. One superconducting device current lead of the invention is made of copper bar material with insulating layer covered on its surface, and the copper bar material is formed solenoid. The other superconducting device current lead of the invention is jointing by copper bar material part and bar material of the high temperature superconducting material or band part; its surface is covered with the insulating layer; the copper bar material part is made of the solenoid. The current lead is adopted to reduce forty percent of the occupied space height, and its effect is notable for the condition that the heat passage can not be reduced.

Description

technical field [0001] The invention belongs to a current-carrying device, in particular to a current-transmitting lead in a superconductor. Background technique [0002] The current lead of a superconducting device is an intermediate current-carrying device in a superconductor that transfers current from a high-temperature end to a low-temperature end or from a low-temperature end to a high-temperature end. At present, the low-temperature superconducting device uses a binary straight rod current lead, the part near the high-temperature end uses a copper rod, and the part near the low-temperature end uses a high-temperature superconducting material rod or strip; the high-temperature superconducting device uses a one-element Straight rod type current leads; both surfaces are covered with insulation. The straight rod type current lead has a simple design and structure, but its length often reaches about 1 meter or even longer. This seriously affects the miniaturization of su...

Claims

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Application Information

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IPC IPC(8): H01B7/00H01B12/00H01B12/02
CPCY02E40/60
Inventor 唐跃进司汉松任丽
Owner HUAZHONG UNIV OF SCI & TECH
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