High temperature superconducting magnetic system protected by high heat capacity materials

Abstract

The invention provides a high temperature superconducting magnetic system protected by high heat capacity materials, wherein, a high temperature superconducting magnet (12) is arranged in a low temperature container (6); the periphery of the high temperature superconducting magnet (12) is coated with high heat capacity cold accumulation materials (17); a refrigerator (1) is installed in a vacuum container (2), and a primary cold head of the refrigerator (1) is connected with a cold shield (5) of the vacuum container (2) through a first heat pipe (3); a secondary cold head of the refrigerator (1) is connected with a low temperature container (6) through a second heat pipe (8); a first and a second cold conduction copper rods (23, 24) which are at the lower end of the second heat pipe (8) are connected with the high temperature superconducting magnet (12) through a cold conduction plate (15); a Y-Ba-Cu-O high temperature superconducting block (13) which is installed in external symmetry on the low temperature container (6) interacts with a permanent magnetic block (14) which is on the inner wall of the vacuum container (2), thus suspending the low temperature container (6); and the temperature signal of the high temperature superconducting magnet (12) detected by a temperature probe (18) is used for controlling the startup and shutdown of the refrigerator (1).

Description

technical field [0001] The invention relates to a superconducting magnet system, in particular to a high temperature superconducting magnet system protected by high heat capacity materials. Background technique [0002] The current density of Bi-based high-temperature superconducting strips in the temperature range of 4-30K is c up to 10 4 -10 6 A / cm 2 . Therefore, the development of high temperature superconducting magnets cooled by refrigerators and protected by high heat capacity materials is of great significance. When the system cools down to its operating temperature, the superconducting magnet can run offline for a long time to achieve the purpose of being used in some special occasions. High-temperature superconducting magnet technology is a mature technology using 4-30K temperature zone refrigerators. At the same time, it can make full use of the current-carrying capacity of high-temperature superconductors, superconducting strips, and high-heat-capacity mixed ...

AI Technical Summary

Problems solved by technology

In the prior art, the high-temperature superconducting magnet using conduction cooling is directly connected to the cooling copper rod under the secondary cold head through the cooling plate in the vacuum container. There is no low-temperature container installed outside the magnet, and the high heat capacity in the low-temperature container cannot pass through. Cold storage material maintains magnet temperature

Therefore, the high temperature superconducting magnet is not protected by a high heat capacity material, and it is difficult for the magnet to operate without a refrigerator

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