Liquid-helium-free superconducting magnet framework, superconducting magnet and winding method

Abstract

The invention provides a liquid-helium-free superconducting magnet framework, a superconducting magnet and a winding method. The liquid-helium-free superconducting magnet framework comprises a cylindrical main body; annular partition plates are arranged on the cylindrical main body at intervals in the axial direction of the cylindrical main body, and annular wire grooves are formed between the adjacent annular partition plates; the annular wire grooves are symmetrically distributed relative to the central cross section of the cylindrical main body; the annular partition plates comprise an annular end plate and at least one annular partition plate in the direction from the two ends of the cylindrical main body to the center; a wire groove and at least one heating piece groove are formed in the annular partition plate in the axial direction of the cylindrical main body, and a heating piece is arranged in the heating piece groove; and at least one group of cold conduction holes are formed in the annular partition plate in the circumferential direction. According to the liquid-helium-free superconducting magnet framework, the superconducting magnet and the winding method of the invention, the functions of winding a superconducting magnet coil, placing the heating sheet, feeding the wire and conducting cold are realized; and the basis of the wet winding process winding of layer-by-layer winding, interlayer insulation and outer layer binding, the processing difficulty of the liquid-helium-free superconducting magnet framework is greatly reduced, and the processing and material cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of superconducting magnets, and in particular relates to a skeleton of a liquid helium-free superconducting magnet, a superconducting magnet and a winding method. Background technique [0002] A superconducting magnet is a magnet made by using superconducting materials instead of ordinary coils through a series of steps such as winding, insulation, and binding. Because it has zero resistance or extremely low resistance under extreme conditions, it can generate extremely high magnetic fields. At the same time, the magnetic loss is almost zero. Therefore, superconducting magnets have the advantages of low energy consumption, small size, light weight, and high magnetic field, and are widely used in scientific engineering, scientific instruments, and biomedical engineering, among which modern medical magnetic resonance imaging (MRI) is the most representative. [0003] Generally speaking, the imaging quality of...

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Problems solved by technology

Liquid helium-free superconducting magnets rely on refrigerators to be cooled to the superconducting temperature range. Therefore, the design of the skeleton and coil winding should comprehensively consider the cooperation with the low-temperature refrigeration system, otherwise the cooling effect will be greatly affected

[0005] CN111668011A discloses a production process of a liquid-helium-free and skeleton-free superconducting magnet, which solves the problem that a large number of superconducting magnets are unqualified in the production process at the present stage. The problem of scrapping the magnetizer

[0007]Existing superconducting magnets are cooled by liquid helium, which has the problem of high cost. Therefore, there is a need for a liquid helium-free superconducting magnet with low quench probability and Low cost and other characteristics have become an urgent problem to be solved

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