Refrigerating device and high-temperature superconducting magnet refrigerating device

Abstract

The invention provides a refrigerating device which comprises a conducting refrigerating unit and a soaking refrigerating unit, wherein the conducting refrigerating unit comprises a refrigerator, an outer layer sealing shell and a cold conducting framework, the refrigerator comprises a cold head, the cold head and the cold conducting framework are both located in the outer layer sealing shell, the soaking refrigerating unit comprises an inner layer sealing shell, a fluid injection pipe and a fluid discharge pipe, the inner layer sealing shell is located in the outer layer sealing shell, the fluid injection pipe and the fluid discharge pipe are both located on the inner layer sealing shell and pass through the inner layer sealing shell and the outer layer sealing shell, one end of the cold conducting framework is located outside the inner layer sealing shell and is connected with the cold head, and the other end of the cold conducting framework extends to the interior of the inner layer sealing shell. The invention further provides a high-temperature superconducting magnet refrigerating device.

Description

technical field [0001] The invention relates to a refrigeration device and a high-temperature superconducting magnet refrigeration device. Background technique [0002] High-temperature superconducting materials have developed rapidly since their discovery in the 1980s. Compared with low-temperature superconducting magnets, high-temperature superconducting magnets have the following advantages: high-temperature superconducting magnets can operate at higher temperatures, Refrigerators can be used for conduction refrigeration, and the Dewar structure is simple, which avoids the inconvenience and safety hazards caused by the use of liquid refrigerants, and is convenient for mobile use; it can perform repeated and rapid excitation discharge, which can improve the stability and safety of the magnet system; Work under higher magnetic field (up to 30 Tesla or more). [0003] High-temperature superconducting magnets need to work in a low-temperature environment, and there are gener...

AI Technical Summary

Problems solved by technology

The concept of conduction cooling is simple, but in actual use, due to the efficiency of the heat engine, the cooling capacity of the cold head is limited and decreases sharply with the decrease of temperature. Therefore, it usually takes several or even dozens of hours to use conduction cooling to cool large magnets. , which is not conducive to some occasions that require rapid deployment

At the same time, since there are many contact surfaces between the magnet and the cooling channel, each contact surface will generate contact thermal resistance, and it is difficult to ensure the overall thermal uniformity of the magnet, which poses a great challenge to the design and manufacturing process of conduction cooling.

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