Structure for conducting and cooling high-temperature superconducting magnet

Abstract

The invention discloses a structure for conducting and cooling a high-temperature superconducting magnet. A cooled high-temperature superconducting magnet comprises at least one high-temperature superconducting double-layer pancake structure, wherein the high-temperature superconducting double-layer pancake structure comprises brass frameworks, upper and lower single pancakes, polyimide films and epoxy plates; upper and lower finished wiring pancakes are formed by parallelly winding cold-conducting copper belts and high-temperature superconducting belts. A three-stage cold-conducting structure of 'cold-conducting copper rods and the brass frameworks', 'cold-conducting copper pieces' and 'the cold-conducting copper belts' is adopted, so that cold in a refrigerator can be quickly and uniformly conducted into the surface of each turn of high-temperature superconducting belt of the high-temperature superconducting magnet, and an excellent refrigeration effect can be achieved. By the structure, effects of reducing heat resistance and the eddy-current loss of the cold-conducting structure are achieved, the problem that the high-temperature superconducting magnet is influenced when the cold-conducting structure generates heat is solved, and the conducted and cooled high-temperature superconducting magnet can be quickly cooled and can run reliably.

Description

technical field [0001] The invention belongs to high-temperature superconducting magnet conduction refrigeration technology, in particular to a high-temperature superconducting magnet conduction refrigeration structure. Background technique [0002] With the continuous improvement of the performance of high-temperature superconducting materials and the substantial increase in the cooling power of G-M refrigerators, 20~30K (Kelvin temperature) has become the most economical operating temperature range for high-temperature superconducting high-field magnets. There are two main ways to cool a high-temperature superconducting magnet weighing hundreds of kilograms to this temperature range. The first method is low-temperature gas convective refrigeration, such as cold helium gas refrigeration. After the helium gas is cooled by the G-M refrigerator, heat is exchanged through the surface of the high-temperature superconducting magnet. The advantage of convection refrigeration is t...

AI Technical Summary

Problems solved by technology

The main disadvantage is that the cooling rate is slow and the temperature gradient is large

Images