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Superconducting coil and manufacturing method

A technology of superconducting coils and manufacturing methods, applied in superconducting magnets/coils, coil manufacturing, inductance/transformer/magnet manufacturing, etc., which can solve problems such as stagnation and restriction of superconducting development

Active Publication Date: 2021-12-14
SHANGHAI SUPERCONDUCTOR TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the current price of 400 yuan / m of superconducting strip, such a failure is simply unacceptable
If this problem is not solved, the application of superconductivity will stagnate, which has become an important bottleneck restricting the further development of superconductivity applications.

Method used

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  • Superconducting coil and manufacturing method
  • Superconducting coil and manufacturing method
  • Superconducting coil and manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] In this embodiment, the parallel winding material includes a multilayer composite material, and the interlayer bonding force of the multilayer composite material is lower than that of the superconducting tape or the bonding force between the superconducting tape and the epoxy glue, Or the bonding force between the multilayer composite material and the epoxy glue is lower than the interlayer bonding force of the superconducting tape or the bonding force between the superconducting tape and the epoxy glue.

[0051] Taking multi-layer PPLP as an example, PPLP (Polypropylene laminated paper) is made of porous pulp material and polypropylene film, which has good leaching performance, so it can effectively prevent the generation of air gaps and reduce the Occurrence of small partial discharges. Polypropylene film has high dielectric strength and good mechanical properties at low temperature. Therefore, PPLP has both good dipping properties and high dielectric strength, and is...

Embodiment 2

[0055] In this embodiment, the parallel winding material includes multi-layer insulating paper, and the interlayer bonding force of the multi-layer insulating paper is lower than the interlayer bonding force of the superconducting tape or the bonding force between the superconducting tape and the epoxy glue, Or the bonding force between the multi-layer insulating paper and the epoxy glue is lower than the interlayer bonding force of the superconducting tape or the bonding force between the superconducting tape and the epoxy glue.

Embodiment 3

[0057] In this embodiment, the parallel winding material includes polytetrafluoroethylene, and the bonding force between polytetrafluoroethylene and epoxy glue is lower than the interlayer bonding force of superconducting tape or between superconducting tape and epoxy glue. The bonding force (to make the surface of PTFE more smooth, thereby reducing the bonding force between PTFE and epoxy glue).

[0058] The manufacturing method of the superconducting coil of the present invention comprises:

[0059] Step S1: Winding the superconducting tape and the parallel winding material in parallel to obtain a wire coil body. There is an inter-turn gap between the turns of the wire coil body, and then fixing and welding the wire coil body.

[0060] Step S2: Epoxy treatment is performed on the wire coil body, so that the turns of the wire coil body are filled with epoxy to form an encapsulation structure. The method of epoxy treatment includes: placing the wire coil body in a vacuum impr...

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Abstract

The invention provides a superconducting coil and a manufacturing method, comprising: a wire coil body and a filling and encapsulating structure; the wire coil body is wound in parallel by superconducting strips and parallel winding materials, and there is an inter-turn gap between the turns The filling and encapsulation structure is partially or entirely encapsulated in the inter-turn gap of the wire coil body; the material of the encapsulation structure includes epoxy. The interlayer bonding force of the parallel winding material is lower than the interlayer bonding force of the superconducting tape or the bonding force between the superconducting tape and the encapsulation structure, or the bonding force between the parallel winding material and the encapsulation structure The force is lower than the interlayer bonding force of the superconducting tape or the bonding force between the superconducting tape and the encapsulating structure. In the present invention, a parallel winding material that is easier to peel off than a superconducting tape is added to the superconducting coil, and the joint section of the parallel winding material and epoxy is also easier to be peeled off, so that the superconducting tape itself will not be damaged. The multi-layer structure produces peeling and damage.

Description

technical field [0001] The invention relates to the field of superconducting materials, in particular to a superconducting coil and a manufacturing method. Background technique [0002] Since Professor Camerin Onners of Leiden University in the Netherlands first discovered superconductivity in his laboratory in 1911, superconducting materials and their applications have been one of the most active frontier research fields in contemporary science and technology. In the past ten years, the research on high-temperature superconducting power and magnet equipment represented by the second-generation high-temperature superconducting tape has developed rapidly. , Superconducting transformers, superconducting magnetic levitation, nuclear magnetic resonance and other fields have achieved remarkable results. [0003] The material properties of superconducting conductors determine that they are relatively fragile. After the material is subjected to certain stresses such as bending, st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F6/06H01F41/061H01F41/071H01F41/074H01F41/12
CPCH01F6/06H01F41/048H01F41/061H01F41/071H01F41/074H01F41/122H01F41/127H01F2041/0711
Inventor 朱佳敏吴蔚陈思侃赵跃张超甄水亮连亚博高中赫王臻郅丁逸珺
Owner SHANGHAI SUPERCONDUCTOR TECH CO LTD