An annular magnet based on a ReBCO superconducting ring

A superconducting ring and toroidal technology, applied in superconducting magnets/coils, magnetic objects, electrical components, etc., can solve the problem of large heat leakage of magnets, and achieve high current carrying capacity of magnets, low heat leakage, and compact structure. Effect

Inactive Publication Date: 2019-01-25
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the use of high-temperature superconducting wires, it is inevitable that the joints of the high-temperature superconducting wires need to be welded, and the current leads need to be connected to the power supply, and the heat leakage of the magnet is relatively large.

Method used

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  • An annular magnet based on a ReBCO superconducting ring
  • An annular magnet based on a ReBCO superconducting ring
  • An annular magnet based on a ReBCO superconducting ring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Prepare as attached figure 1 The specific process of the ReBCO superconducting sheet shown is as follows:

[0026] (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;

[0027] (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;

[0028] (3) On the buffer layer 102, a ReBCO thin film 103 is plated on the second generation high temperature superconducting thin film coating technology;

[0029] (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.

[0030] The preparation proce...

Embodiment 2

[0032] prepared as figure 2 The specific process of the shown ReBCO superconducting ring is as follows:

[0033] in, figure 2 The specific preparation process of the first ReBCO superconducting ring piece 2 with a positioning hole cut at one corner of the D-shaped inner ring shown in -a is as follows:

[0034] A D-shaped ring sheet is cut on the ReBCO superconducting sheet obtained in Example 1, and the radius of the inner ring is r 1 , the outer ring radius is r 2 , the ring width is w 1 ;Cut out a radius r at the junction of the straight line and the arc of the D-shaped inner ring, that is, at the corner of the inner ring 3 The circular positioning hole 201, that is, as figure 2 The first ReBCO superconducting ring piece 2 shown in -a.

[0035] in, figure 2 The specific preparation process of the second ReBCO superconducting ring piece 3 with positioning holes cut at the two corners of the D-shaped inner ring shown in -b is as follows:

[0036] A D-shaped ring sh...

Embodiment 3

[0038] prepared as image 3 Insulation sheet shown: cut an organic insulation film such as PPLP insulation film, kraft paper or epoxy sheet into a D-shaped insulation sheet with the same shape and size as the ReBCO superconducting ring sheet shown in Example 2.

[0039] in, image 3 -a is with figure 2 - the first insulating sheet 4 with the same shape and size as the first ReBCO superconducting ring sheet 2 shown in a; image 3 -b for the same figure 2 - the second insulating sheet 5 with the same shape and size as the second ReBCO superconducting ring sheet 3 shown in b.

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PUM

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Abstract

The invention discloses an annular magnet based on a ReBCO superconducting ring piece belonging to the technical field of superconducting magnet application. The annular magnet is composed of a plurality of identical unit annular field magnets uniformly distributed along the annular direction, wherein, the unit annular field magnets are obtained by alternately stacking N ReBCO superconducting ringsheets and N+1 insulating sheets, wherein N is a positive integer; ReBCO superconducting rings are D-shaped, and N + 1 insulating rings are the same size as N ReBCO superconducting rings. A low-temperature Dewar immersion type cool magnet has that advantages of high magnet current carry capacity, low heat leakage, compact structure and disassembly, and can generate a stable large-space magnetic field, and is widely used in the fields of medium and large Tokamak magnet, thermonuclear fusion reaction and the like.

Description

technical field [0001] The invention belongs to the technical field of application of superconducting magnets, in particular to a circular magnet based on a ReBCO superconducting ring sheet. Background technique [0002] With the continuous improvement of the performance of high-temperature superconducting wires, the research and development of high-temperature superconducting magnets is also progressing steadily. High-temperature superconducting ring magnet is a structural form of high-temperature superconducting magnets. Its most important and promising applications are thermonuclear fusion and tokmak ring magnets. The ring magnet is a magnet formed by several identical unit coils evenly distributed along a large ring, which can generate a stable magnetic field in a large space. [0003] At present, the low-temperature superconducting wire used in the tokamak magnet is wound, the working temperature is very low, the cooling power of the magnet is large, and the magnetic f...

Claims

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Application Information

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