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Preparation method of high-temperature superconducting line

A technology of high-temperature superconducting and high-temperature superconducting strips, applied in the field of preparation of high-temperature superconducting wires, can solve the problems of low physical strength and unfavorable large-scale application, reduce critical current attenuation and AC loss, reduce external magnetic field, and not easily damage effect

Active Publication Date: 2016-08-17
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the problem that the low physical strength of existing multifilament composite superconducting wires is not conducive to large-scale application

Method used

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  • Preparation method of high-temperature superconducting line

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Effect test

preparation example Construction

[0038] The preparation method of the high temperature superconducting wire described in the following examples, its technological process is as follows figure 1 As shown, a high temperature superconducting wire is obtained by stacking and welding a plurality of strips together by means of hot dip plating.

[0039] The preparation method specifically comprises the following steps:

[0040] Step 1. Fix each strip on the pay-off device, and locate the center line of the strip;

[0041] Step 2, adopt the method of reeling and unwinding the strip, and transport each strip into the tin furnace respectively;

[0042] Step 3: All strips are positioned in the tin furnace by rollers, welded and combined into one, and then released from the furnace to obtain the high-temperature superconducting wire.

[0043] The tape is a second-generation high-temperature superconducting tape with narrow filamentation.

[0044] The width of the strip is at least one of 1 mm or 2 mm.

[0045] The cr...

Embodiment 1

[0053] The present embodiment provides a method for preparing a square high-temperature superconducting wire, and the specific steps are as follows:

[0054] 1) Fix 6-8 narrow filament high-temperature superconducting tapes with a width of 1mm on the pay-off device, position the center line of the tape, and use the method of reeling and unwinding the tape. The deceleration motor plus the potentiometer controls each unwinding shaft by frequency conversion respectively. Use PP corrosion-resistant material as dip flux tank, each strip is independent;

[0055] 2) For the tin-coated part of the strip, the strips are separated before entering the tin furnace, positioned in the tin furnace by rollers and coated with tin to combine into one. The tin furnace is made of titanium metal. The temperature in the tin furnace is controlled by a temperature controller to detect the actual temperature. The temperature is controlled to carry out tin coating without destroying the superconduct...

Embodiment 2

[0059] The present embodiment provides a preparation method of a circular high-temperature superconducting wire, and the specific steps are as follows:

[0060] 1) 2 pieces of 1mm wide and 4 pieces of narrow filament high-temperature superconducting tapes with a width of 2mm are respectively fixed on the pay-off device, the center line of the tape is positioned, and the method of reeling and unwinding the tape is adopted. , and each unwinding reel is controlled by frequency conversion of multiple deceleration motors plus potentiometers. Use PP corrosion-resistant material as dip flux tank, each strip is independent.

[0061] 2) For the tin-coated part of the strip, the strips are separated before entering the tin furnace, positioned in the tin furnace by rollers and coated with tin to combine into one. The tin furnace is made of titanium metal. The temperature in the tin furnace is controlled by a temperature controller to detect the actual temperature. The temperature is c...

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Abstract

The invention discloses a preparation method of a high-temperature superconducting line. A plurality of strips are stacked together and welded into the high-temperature superconducting line in a hot dip coating manner. The preparation method particularly comprises the following steps: fixing each strip on a pay-off device and positioning center lines of the strips; conveying each strip into a solder furnace by a method of loading unreeled strips in unreeling spools; and positioning all strips in the solder furnace through idler wheels, welding and merging the strips into a line and drawing a charge to obtain the high-temperature superconducting line. The prepared high-temperature superconducting line is round or square, is high in critical current and suitable for bending and twisting, has relatively high physical strength and is not easily damaged; an external magnetic field sensed by a superconductor can be reduced; the critical current attenuation and the AC loss can be reduced; and the prepared high-temperature superconducting line has obvious advantages when applied to large superconducting power equipment.

Description

technical field [0001] The invention belongs to the field of superconducting wires, in particular to a preparation method of a high-temperature superconducting wire. Background technique [0002] Because the high-temperature superconducting material far exceeds the large current carrying capacity of the conventional conductor, people have great hope for its application in the field of strong electricity. Processing technology first made breakthroughs in the early 1990s, and commercial production was soon achieved. Despite its high price, countries around the world have developed large-scale research plans and have achieved remarkable results in the fields of superconducting energy storage, superconducting cables, superconducting current limiters, and superconducting transformers. [0003] However, in industrial applications, such as high-temperature superconducting transformers, high-temperature superconducting motors and high-temperature superconducting cables, large curre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B13/012H01B12/02
CPCH01B12/02H01B13/01209Y02E40/60
Inventor 李柱永
Owner SHANGHAI JIAO TONG UNIV
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