High-heat-conductivity niobium-tin superconducting coil and manufacturing method thereof

A technology of superconducting coil and niobium three tin, applied in superconducting magnet/coil, coil manufacturing, inductor/transformer/magnet manufacturing and other directions, can solve the problems of stainless steel skeleton deformation, poor cooling effect of niobium three tin coil, etc. performance, improve the cooling effect, improve the effect of the cooling effect

Pending Publication Date: 2022-04-08
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to overcome the problem of the poor cooling effect caused by the low thermal conductivity of the stainless steel skeleton of the niobium-three-tin superconducting coil wound by the stainless steel skeleton in the prior art, and the problem that the stainless steel skeleton is subjected to long-term high-temperature heat treatment. The deformation problem that occurs during the

Method used

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  • High-heat-conductivity niobium-tin superconducting coil and manufacturing method thereof
  • High-heat-conductivity niobium-tin superconducting coil and manufacturing method thereof

Examples

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Effect test

Embodiment 1

[0041] The stainless steel skeleton 1 is made into a cylindrical structure with end plate flanges 8 at both ends, the middle position of the end plate flanges 8 at both ends is a neutral plane, and grooves 7 are opened on both sides of the neutral plane, The width of the groove 7 is 1 mm, and the edge of the groove 7 is 5 cm away from the end plate flanges 8 at both ends. A solid heat-resistant steel is inserted into the central hole of the stainless steel frame 1 as a central support 6, and the diameter of the central support 6 and the assembly gap between the stainless steel frame 1 are 5mm on one side, so that the solid heat-resistant steel can be easily inserted into the In the center hole of the stainless steel skeleton. Sodium chloride 5 is added into the gap between the stainless steel frame 1 and the central support 6 and compacted from both sides. Add aluminum nitride 4 with high thermal conductivity into the groove 7 opened on the stainless steel skeleton 1, and win...

Embodiment 2

[0043] A groove 7 is opened on both sides of the neutral surface of the stainless steel frame 1, the width of the groove 7 is 10 mm, and the distance between the sides of the groove 7 and the two end plate flanges 8 is 10 cm. A solid heat-resistant steel is inserted into the center hole of the stainless steel skeleton 1 as a central support 6, and the assembly gap between the diameter of the central support 6 and the stainless steel skeleton 1 is 0.5 mm on one side, so that the heat-resistant steel can be easily inserted into the center of the stainless steel skeleton 1 inside the hole. Add sodium chloride 5 into the gap between the stainless steel frame 1 and the central support 6, and compact it from both sides. Add aluminum nitride 4 with high thermal conductivity into the groove 7 opened on the stainless steel frame 1, and wind stainless steel sheets on the stainless steel frame 1, tighten it with a clamp, and compact and fill the stainless steel frame with 100 micron alum...

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Abstract

The invention provides a high-heat-conductivity niobium three-tin superconducting coil and a manufacturing method thereof. The high-heat-conductivity Nb3Sn superconducting coil comprises a stainless steel framework (1), an insulating layer (2), a Nb3Sn superconducting coil (3), aluminum nitride (4), sodium chloride (5) and a central support (6). The high-heat-conductivity Ni3Sn superconducting coil is adopted, the mechanical supporting structure of stainless steel is utilized, the high heat conductivity of aluminum nitride is combined, the cold conduction effect of the thin-wall stainless steel framework can be improved, the problem that the cooling capacity of the Ni3Sn coil is poor is effectively solved, the refrigeration effect of the Ni3Sn coil is improved, and the service life of the Ni3Sn coil is prolonged. Therefore, the current-carrying capacity of the Ni3Sn coil is improved, and the performance of the Ni3Sn superconducting coil is improved. Meanwhile, in order to solve the problem that thin-wall stainless steel is prone to deformation at high temperature, the gap between the stainless steel framework and the center heat-resistant steel support is filled with sodium chloride, radial shrinkage of the stainless steel at high temperature is effectively prevented, sodium chloride can be removed only through water dissolution after temperature returning, and the center heat-resistant steel support can be conveniently pulled out.

Description

technical field [0001] The invention belongs to the field of superconducting materials, in particular to a high thermal conductivity niobium-three-tin superconducting coil and a manufacturing method thereof. Background technique [0002] Niobium-three-tin and niobium-titanium superconducting materials are representatives of low-temperature superconducting materials. Compared with niobium-titanium superconducting materials, niobium-titanium superconducting materials have a higher superconducting critical transition temperature, reaching above 18K, and have a higher upper limit. Critical magnetic field, the upper critical magnetic field can reach 25T at 4.2K. Utilizing the high critical transition temperature and high critical magnetic field of niobium-three-tin superconducting materials, niobium-three-tin superconducting coils are prepared, which can generate higher magnetic fields, and are currently one of the most ideal superconducting materials for generating low-temperatu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F6/06H01F6/04H01F41/04H01F41/098H01F41/12
Inventor 孙万硕王秋良程军胜戴银明胡新宁陈顺中王晖刘建华
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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