Axial flexible low-temperature heat conduction radial heat insulation device

Abstract

The invention discloses an axial flexible low-temperature heat conduction radial heat insulation device comprising a sealing body, a heat insulation cold chain connecting structure and a low temperature system. The heat insulation cold chain connecting structure comprises a radial heat insulating structure and an axial flexible low temperature heat conducting structure which are sequentially connected. The radial heat insulating structure and the axial flexible low temperature heat conducting structure are arranged in the sealing body, and the sealing body and the axial flexible low temperature heat conducting structure are connected to a cold source device of the low temperature system. The axial flexible low temperature heat conducting structure comprises a cold finger to be cooled, a heat conductor and a heat-conducting cold finger which are sequentially connected; and the heat-conducting cold finger is connected to the cold source device. The radial heat insulating structure includes a first shaft ring, a flexible spring and a second shaft ring which are sequentially connected; and the first shaft ring is connected with the heat conductor, and the second shaft ring is connectedwith the sealing body. Polished shafts are connected to the two ends of the flexible spring, a ring groove is formed in the circumferential direction of the side surface of each polished shaft, and the ring grooves are filled with heat insulating material layers. The axial flexible low-temperature heat conduction radial heat insulation device is small in heat loss, is in flexible connection, meets the requirements for low temperature heat transferring, and achieves the aim of position and posture adjustment.

Description

Technical field [0001] The invention relates to a low-temperature heat transfer device, in particular to an axially flexible low-temperature heat conduction and radial heat insulation device. Background technique [0002] Generally speaking, in the field of low-temperature heat transfer, the mechanical structure needs to have excellent axial heat conduction effect and excellent thermal insulation effect in the radial direction. In the process of low-temperature heat transfer, the temperature can be conducted very smoothly along the axial mechanical structure, and axial loss It is controllable, and the conduction loss along the radial mechanical structure during low temperature heat transfer is as small as possible. The radial heat conduction has a thermal insulation effect to improve the axial heat transfer efficiency, control the radial thermal insulation loss, and meet the requirements of low temperature heat transfer effect. [0003] However, the connections of the components of...

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Problems solved by technology

[0003] However, the connections of traditional low-temperature heat transfer mechanism components are all rigid connections, with low axial heat conduction efficiency and large radial heat transfer loss.

There is no movement displacement in the axial and radial directions, and it cannot adapt to the occasions where the heat transfer mechanism needs to adjust the displacement in the axial and radial directions, and does not meet the use requirements of the low-temperature heat transfer mechanism

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