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Superconducting magnet based on ReBCO superconducting rings

A technology of superconducting magnets and superconducting rings, applied in the directions of superconducting magnets/coils, magnetic objects, electrical components, etc., can solve the problems of ReBCO superconducting magnets being unable to achieve closed-loop operation, immature welding process, etc. Compact structure, avoid the effect of manual operation

Inactive Publication Date: 2019-02-15
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

ReBCO superconducting tape is often used in high-field magnet coils. Magnets above 15T are mostly wound with ReBCO superconducting tape, but ReBCO superconducting tape is usually double-cake or layer-wound. Unavoidable ReBCO superconducting tape ReBCO superconducting magnets cannot achieve closed-loop operation due to the immature welding process.

Method used

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  • Superconducting magnet based on ReBCO superconducting rings
  • Superconducting magnet based on ReBCO superconducting rings
  • Superconducting magnet based on ReBCO superconducting rings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Prepare as attached figure 1 The specific process of the ReBCO superconducting sheet shown is as follows:

[0039] (1) Using the same substrate material as the second-generation high-temperature superconducting coating to produce a sheet-shaped substrate 101, wherein the substrate material is Ni, NiW, Hastelloy or stainless steel;

[0040] (2) On the substrate 101, a second-generation high-temperature superconducting buffer layer preparation process is used to deposit a buffer layer 102, wherein the buffer layer is an insulating metal oxide;

[0041] (3) On the buffer layer 102, a ReBCO thin film 103 is plated on the second generation high temperature superconducting thin film coating technology;

[0042] (4) Plating a protective layer 104 on the ReBCO thin film 103 , wherein the protective layer 104 is a silver thin film protective layer or a copper thin film protective layer, that is, the ReBCO superconducting thin sheet 1 is obtained.

[0043] The preparation proce...

Embodiment 2

[0045] prepared as figure 2 The specific process of the ReBCO square superconducting ring piece shown is as follows:

[0046] in, figure 2 The specific preparation process of the ReBCO square superconducting ring piece Ⅰ shown in -a is cut with two circular holes located apart from each other:

[0047] Cut the ReBCO superconducting sheet obtained in Example 1 into a square sheet with a length of a and a width of b, and then cut out a position with a radius of r at the preferred central position inside the square sheet 1 The first circular hole 201 and the radius r 2 The second round hole 202 of the first round hole 202, and at the same time cut out a width w 1 , with length l 1 The first slit 203 of the first, in order to communicate with the first round hole 201 and the second round hole 202, that is, as figure 2 ReBCO square superconducting ring piece Ⅰ shown in -a.

[0048] in, figure 2 The specific preparation process of the ReBCO square superconducting ring chi...

Embodiment 3

[0056] prepared as image 3 Insulation sheet as shown: cut an organic insulation film such as PPLP insulation film, kraft paper or epoxy sheet into an insulation sheet with the same shape and size as the superconducting ring sheet shown in Example 2.

[0057] in, image 3 -a is with figure 2 - ReBCO square superconducting ring piece Ⅰ shown in -a and square insulation piece Ⅴ with the same shape and size; image 3 -b for the same figure 2 The ReBCO square superconducting ring piece II shown in -b has the same shape and size as the square insulating piece VI; image 3 -c for the same figure 2 The shape and size of the ReBCO racetrack-shaped superconducting ring piece III shown in -c are exactly the same as the racetrack-shaped insulating piece VII; image 3 -d for the same figure 2 The ReBCO racetrack-shaped superconducting ring sheet IV shown in -d has the same shape and size as the racetrack-shaped insulating sheet VIII.

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Abstract

The invention discloses a superconducting magnet based on ReBCO superconducting rings, and belongs to the technical field of superconducting magnet application. The superconducting magnet is formed byalternately stacking and fixing one or more sets of N pieces of superconducting rings and N+1 pieces of insulating sheets which are stacked and then fixed through a fixing device; wherein N is a positive integer, the N pieces of superconducting rings are all square ring pieces or racetrack-shaped ring pieces, and the shapes and sizes of the N+1 pieces of insulating sheets are same as those of theN pieces of superconducting rings respectively. The superconducting magnet based on the ReBCO superconducting rings has the advantages that welding, a power source and a current lead are not needed among the ReBCO superconducting rings in the superconducting magnet, the structure is compact, the detachability is achieved, the stability is high, the preparation process is simple, a strong magneticfield can be stably output, the range of the ReBCO superconductors applied to strong magnetic fields is expanded, and the superconducting magnet can be widely applied to medium and large superconducting magnets and thermonuclear fusion reactions.

Description

technical field [0001] The invention belongs to the technical field of superconducting magnet applications, in particular to a superconducting magnet based on ReBCO superconducting ring sheets. Background technique [0002] Strong magnetic field is an important extreme condition for scientific research. It is of great significance to the development of science and technology to study high-magnetic field test devices with different magnetic field strengths and provide different experimental conditions. ReBCO (rare earth barium copper oxide, Re is Y, Sm or Nd) coated conductor has the advantages of high upper critical magnetic field, high critical current density and low AC loss. ReBCO superconductors have high current-carrying capacity in strong magnetic fields, and are used in various fields such as large superconducting magnet devices, high-energy accelerators, nuclear fusion magnets, and superconducting motors. At present, the practical high-temperature superconducting wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F6/00
CPCH01F6/00
Inventor 袁茜王银顺陈浩胡一丹皮伟李继春夏芳敏
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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