High temperature superconductive double helix current down-lead structure

Abstract

Disclosed a structure of high temperature superconduction double helix current lead wire, belongs to the filed of high temperature super conduction technique, characterized in the structure of said lead wire comprising a double helix barrel made from epoxide resin while its cylinder is double helix groove; inlet and outlet wires of high temperature superconduction current both made form Bi-2223 / Ag, while said wires coiling said double helix barrel in turn and connecting the superconduction energy storage magnet in liquid helium. Said double helix structure can increase the length of inlet and outlet wires effectively, to increase the heat resistance of lead wires, and decrease the heat leakage to low temperature cooling magnet system.

Description

technical field [0001] The invention belongs to the technical field of high temperature superconductivity. Background technique [0002] Compared with the traditional copper current lead, the binary composite current lead combined with the high temperature superconducting lead and the copper lead can greatly reduce the heat leakage from the high temperature environment to the low temperature environment. Bulk superconducting leads in the form of pure castings of superconducting ceramics are usually rod-shaped or tubular, which are brittle at low temperatures. The high temperature superconducting wire can also be a superconducting tape. However, current lead structures cannot significantly reduce heat leakage. Contents of the invention [0003] The purpose of the present invention is to provide a novel double helix structure based on the current lead of high temperature superconducting material, which can effectively increase the thermal resistance of the high temperature...

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Problems solved by technology

But the current lead structure can not significantly reduce the leakage heat

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