Automatic liquid nitrogen filling refrigeration device of high-temperature superconducting magnet

Abstract

The invention relates to an automatic liquid nitrogen filling refrigeration device of a high-temperature superconducting magnet. The refrigeration device comprises a magnet cooling dewar flask, a nitrogen evaporation pipeline, a liquid nitrogen pipeline, a liquid nitrogen communication vessel and an outside liquid nitrogen vessel, wherein the magnet cooling dewar flask comprises an inner liner and an outer liner; a vacuum interlayer is formed between the inner liner and the outer liner; the outer liner is connected with an upper end cover of the magnet cooling dewar flask by flange bolts; a permanent magnet is arranged above the upper end cover; cold conducting discs are respectively arranged on the two outer sides of the top of the inner liner; the high-temperature superconducting magnet generating a suspension force with the permanent magnet is arranged above the cold conducting discs; the nitrogen evaporation pipeline penetrates through the tops of the outer liner and the inner liner; the liquid nitrogen pipeline penetrates through the bottoms of the outer liner and the inner liner; the nitrogen evaporation pipeline is connected with one port at the top of the liquid nitrogen communication vessel by a first hose; a port at the bottom of the liquid nitrogen communication vessel is connected with the liquid nitrogen pipeline by a second hose; and another port at the top of the liquid nitrogen communication vessel is connected with a port of the outside liquid nitrogen vessel by a third hose.

Description

technical field [0001] The invention relates to the technical field of low-temperature application of high-temperature superconducting materials, in particular to a refrigeration device for automatically filling liquid nitrogen into high-temperature superconducting magnets. Background technique [0002] With the development of superconducting technology, the cooling technology of superconducting materials has attracted more and more attention. Superconducting bearings have been applied due to their characteristics of non-contact friction, ultra-high speed, and self-stability. However, high-temperature superconducting materials must be cooled at critical temperatures. At present, it is commonly used to immerse the high-temperature superconductor material in liquid nitrogen to reduce the temperature to 77K, so that the material has superconducting properties, so as to ensure the low-temperature environment of the high-temperature superconductor material; another way is to use a...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a high-temperature superconducting magnet liquid nitrogen automatic filling refrigeration device to solve the problem of periodic filling of liquid nitrogen in the refrigeration process of high-temperature superconducting materials

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