Low-temperature cold shrinkage prevention eccentric positioning device for superconducting magnet

Abstract

The invention discloses a low-temperature cold shrinkage prevention eccentric positioning device for a superconducting magnet. The low-temperature cold shrinkage prevention eccentric positioning device comprises a pushing end positioning block (1), a floating end positioning block (2), a barrel (3), a pushing end plate (41), a floating end plate (42) and an inner side conical block (5). The pushing end plate and the floating end plate are connected with the cylinder body, and cone structures (61) are formed at the two ends of the superconducting magnet shell; the floating end positioning blockis arranged on the floating end plate and is matched and positioned with the cone structure through a conical surface; the pushing end positioning block is arranged on the pushing end plate and is provided with a radial disc spring assembly (71); the inner side cone block is arranged between the pushing end positioning block and the cone structure through an arc surface and a cone surface; the superconducting magnet shell is coaxially arranged in the cylinder body; and an axial disc spring assembly (72) is arranged between the inner side conical block and the pushing end positioning block. Accurate installation and positioning of the superconducting magnet at normal temperature can be realized, and the problems that the magnetic field center and the temperature hole are not concentric andthe magnetic field pattern and the magnetic field intensity of the magnet do not meet the requirements due to cold shrinkage of parts are solved.

Description

Technical field [0001] The present invention relates to a superconducting magnet device, and more particularly to a low-temperature cold shrinking eccentric positioning device for superconducting magnets. Background technique [0002] With the advancement of technology and special industry demand, more large size, high quality, high-precision complex cyclone, ion accelerator and other magnets are studied and manufactured. High precision is mainly reflected in the center of the magnetic field center and the same axis of the warm hole, the magnetic field central axis and the inner cylinders are too large (>>>>>0.1mm), the electronic (ion) bundle will not be moved according to the predetermined track, which will seriously affect the output power. [0003] For existing boneless magnets consisting of assembly coils, the outside is covered by a thick aluminum tube having a thick wall thick, it is necessary to have very high assembly requirements at normal temperature, bu...

AI Technical Summary

Problems solved by technology

However, when the temperature of the superconducting magnet drops from 300K to 4K, it will inevitably lead to cold shrinkage deformation of its positioning parts, thereby destroying the concentricity of the magnet, and even destroying the positioning connectors or welds

Especially for superconducting magnets that use materials with a large thermal shrinkage coefficient (aluminum alloy) as positioning parts, the concentricity of the magnets is seriously affected by the cold shrinkage of the parts, which makes the superconducting magnets unable to meet the use requirements

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