A conduction cooling superconducting magnet refrigerator structure and its installation and disassembly method

Abstract

A conductive cooling superconducting magnet refrigerator structure and its installation and disassembly methods, including a connection flange connected with the refrigerator, the connection flange is connected with the support flange through a bellows, and the magnet outer Dewar is respectively connected with the support flange . The first-stage cold head of the refrigerator is connected with the upper assembly of the heat transfer part, the lower end of the upper part of the heat transfer part is tightly combined with the upper end of the lower part of the heat transfer part by pressure, and the lower end of the lower part of the heat transfer part is connected with the magnet cold screen flange, The secondary cold head of the refrigerator is connected to the upper part of the secondary heat transfer component, the lower part of the secondary heat transfer component is combined with the upper part supported by the secondary heat transfer component by pressure, and the upper part of the heat-conducting copper braid is connected to the support of the secondary heat transfer component. The lower part is welded together, the upper end of the supporting spring is welded together with the support of the secondary heat transfer part, the lower end of the supporting spring is fixed on the mounting plate, and the lower part of the mounting plate is connected with the winding of the magnet with a heat-conducting copper braid, which has the advantages of simple structure, easy operation and maintenance Low cost, simple installation and disassembly methods.

Description

technical field [0001] The invention belongs to the technical field of superconducting magnets, in particular to a conduction cooling superconducting magnet refrigerator structure and its installation and disassembly methods. Background technique [0002] Traditional superconducting magnets are generally refrigerated by immersing low-temperature superconducting wires such as NbTi and Nb3Sn in liquid helium. However, low-temperature superconducting magnets are expensive, and because they must work in the liquid helium temperature region (4.2K), refrigeration and maintenance costs are high. With the shortage of liquid helium resources and the development of refrigeration technology, the research on conduction-cooled (also known as refrigerator cooling, liquid-free helium, Cryogen-Free) superconducting magnet technology is gradually becoming practical. In this way, the use of conduction cooling Technology has made it possible to manufacture superconducting magnets. [0003] S...

AI Technical Summary

Problems solved by technology

Under normal circumstances, when performing maintenance on the direct cooling magnet of the refrigerator, it is necessary to completely disassemble the magnet, take out the cold head of the refrigerator, and return it to the refrigerator manufacturer for maintenance; The effect will also be weakened

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