Insert-extract type dewar structure with vacuum interlayer

Abstract

The invention relates to an insert-extract type dewar structure with a vacuum interlayer. The insert-extract type dewar structure with the vacuum interlayer comprises a first flange assembly, a secondflange assembly and a dewar structure assembly, the first flange assembly comprises a first spacer flange and a first CF flange, an interlayer exhaust tube mounted on the first spacer flange penetrates through the first spacer flange, the dewar structure assembly comprises a dewar shell body, a dewar cover plate, a dewar base plate, and a dewar cold-finger and a support cold plate, an annular space interlayer is arranged between the dewar cold-finger and a low temperature refrigerator cold-finger, the second flange assembly comprises a second spacer flange and a second CF flange, and the first CF flange is connected with the second CF flange through bolts. According to the insert-extract type dewar structure with the vacuum interlayer, the problem that an integrated type dewar and a refrigerator cannot be disassembled in the prior art can be solved, the functions of disassembly, maintenance and replacement of the refrigerator are achieved, the quality cost is greatly lowered, and theapplication defect that the refrigerator is damaged due to the fact that cold devices are influenced by mechanical forces such as vibration and impacting can be further overcome.

Description

technical field [0001] The invention relates to the technical field of cryogenic cooling, in particular to a plug-in Dewar structure with a vacuum interlayer. Background technique [0002] Vacuum Dewar is widely used in cryogenic cooling equipment and other cryogenic engineering fields due to its excellent properties such as high vacuum, low radiation, no pollution and long life. Since the cryogenic cooling equipment needs to use a large-capacity cryogenic refrigerator to cool the cooled device to below 80K, the cooled device can work well. Therefore, the cooled device must be placed in a vacuum dewar for good heat insulation to obtain so cold. [0003] At present, the integrated Dewar and refrigerator used in cryogenic cooling equipment have a welded structure as one, and the refrigerator and Dewar cannot be disassembled. Although this method can make the cold finger of the refrigerator directly placed in the Dewar, and the cooled device is directly coupled with the cold ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a plug-in Dewar structure with a vacuum interlayer. The plug-in Dewar structure can not only solve the problem that the integrated Dewar and refrigerator cannot be disassembled in the prior art, but also realize the disassembly of the refrigerator. The function of maintenance and replacement can greatly reduce the cost of quality, and it can also avoid the application disadvantages of damaging the refrigerator due to mechanical forces such as vibration and impact on the cooled components

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