Adiabatic supporting device

Abstract

An adiabatic supporting device is used for supporting low temperature devices in a low temperature vacuum system. The supporting device comprises a cold platform with a plurality of mounting holes and support bars used for supporting the cold platform. The bottoms of the support bars are fixedly connected with a vacuum chamber. The support bars comprise upward ejecting support bars and downward pressing support bars. The upper parts of the upward ejecting support bars are matched with the mounting holes by way of point contact or line contact and the upward ejecting support bars provide upward ejecting force to the cold platform. After the downward pressing support bars pass through the mounting holes, the tops of the downward pressing support bars are matched with the mounting holes by way of point contact or line contact and the downward pressing support bars provide downward pressing force to the cold platform. The upward ejecting force reaches equilibrium with the downward pressing force. The supporting device furthest reduces the heat contact area under the premise of ensuring the stability of the mechanical structure and changes from the original nut surface contact to the current line contact or point contact, thus reducing heat leakage from the vacuum chamber to the cold platform and greatly reducing heat load.

Description

technical field [0001] The invention relates to a thermal insulation support device, in particular to a thermal insulation support device for supporting low temperature devices in a low temperature vacuum system. Background technique [0002] Devices that need to work in a low-temperature environment, such as high-temperature superconducting filters, infrared arrays, etc., generally obtain cooling capacity through mechanical refrigerators, cryogenic liquids, semiconductor refrigeration devices, etc., to achieve low temperatures. And these low-temperature devices must be supported in the vacuum chamber, and the introduction of the supporting device will inevitably lead to a certain amount of heat leakage. In order to improve the cooling efficiency, it is necessary to minimize the heat leakage while ensuring the stability of the mechanical structure. [0003] Take a mechanical refrigerator as an example, such as a miniature Stirling refrigerator. The cold finger is a thin-wal...

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Problems solved by technology

And these low-temperature devices must be supported in the vacuum chamber, and the introduction of the support device will inevitably lead to a certain amount of heat leakage.

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