Stress support ring for highfield superconducting solenoid coil and mounting method

A solenoid coil and superconducting coil technology, which is applied in the manufacture of superconducting magnets/coils, magnetic objects, inductors/transformers/magnets, etc., can solve the problem that coils cannot generate high magnetic fields.

Inactive Publication Date: 2009-12-02
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcoming that the above-mentioned coil cannot generate a high magnetic field, and propose a stress support ring applied to a large-diameter solenoid coil and a superconducting coil with complex magnetic field distribution

Method used

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  • Stress support ring for highfield superconducting solenoid coil and mounting method
  • Stress support ring for highfield superconducting solenoid coil and mounting method
  • Stress support ring for highfield superconducting solenoid coil and mounting method

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0015] The supporting ring of the present invention is composed of an aluminum alloy inner supporting ring and a stainless steel outer supporting ring. The aluminum alloy inner support ring is made of aluminum alloy Al-6061 material or a material with large thermal shrinkage and high strength. The material of the stainless steel outer support ring is stainless steel. When the superconducting coil is under less stress, the inner support ring can be used directly to suppress the stress of the superconducting coil. The inner radius of the inner support ring is smaller than the outer radius of the superconducting coil, and the inner surface of the inner support ring is required to be very smooth. The outer surface of the superconducting coil also needs to be machined to a smooth surface. If the stress of the superconducting coil is relatively la...

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Abstract

The invention provides a stress support ring for a highfield superconducting solenoid coil, which is characterized in that: a support ring (4) consists of an inner aluminium alloy support ring (1) and an outer stainless steel support ring (2). The method comprises the following steps: slowly cooling the inner aluminium alloy support ring (1) to the liquid nitrogen temperature of 77K by cold nitrogen, heating the outer stainless steel support ring (2) to 300 DEG C, and directly sleeving the inner aluminium alloy support ring (1) into the outer stainless steel support ring (2) to form strong bonding force between the stainless steel ring and the aluminium alloy ring so as to form the support ring (4); slowly cooling a superconducting coil (3) to the liquid nitrogen temperature of 77K by cold nitrogen gas; and heating the support ring (4) to 200 DEG C, and directly assembling the superconducting coil (3) into the support ring (4). The stress support ring for the highfield superconducting solenoid coil can effectively inhibit the stress problem of the highfield superconducting coil and reduce quench hardening times of the superconducting coil and degradation of critical current density.

Description

technical field [0001] The invention relates to a stress support ring for a superconducting coil, in particular to a stress support ring for a high magnetic field superconducting solenoid coil. Background technique [0002] Modern magnet scientific instruments rely on high-field superconducting magnets with complex magnetic field distributions, such as 25-30T large-scale superconducting magnets and NMR magnet systems for extreme conditions, whose main features are large apertures and complex magnetic field structures. Generally, a high-field superconducting magnet consists of a variety of superconducting wires distributed in the form of non-uniform current density, which not only achieves a high magnetic field but also saves the amount of superconducting wires used. [0003] For a superconducting magnet with a high central magnetic field and a large diameter, the angular stress σ of the superconducting coil caused by the Lorentz force due to the interaction between the curre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F6/06H01F6/00H01F41/02
Inventor 王秋良严陆光胡新宁戴银明
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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