A multi-layer cryogenic test chamber

Abstract

The invention provides a multi-layer cryogenic test chamber, which comprises an outer cylinder body, a test workpiece entrance arranged on the upper surface of the outer cylinder body, and a cylinder-shaped test inner chamber, the test workpiece entrance communicates with the test inner chamber, the outer cylinder body and the test inner chamber There is a middle cylinder between the inner chambers of the test, and the outer cylinder, the middle cylinder and the inner chamber of the test are all arranged concentrically. The closed space between them is a cryogenic layer. One end of the outer cylinder is provided with a low-temperature medium inlet, a low-temperature medium outlet and an inert gas inlet. The inner wall of the middle cylinder is provided with a low-temperature medium pipeline. The other end of the low-temperature medium pipeline is connected with the low-temperature medium outlet, and the outer surface of the test inner chamber is surrounded by a spiral coil, one end of the coil is connected with the inert gas inlet, and the other end of the coil is connected with the test inner chamber . The invention can quickly lower the temperature of the test chamber, prevent the loss of low-temperature medium, and has the function of heat preservation.

Description

technical field [0001] The invention belongs to the technical field of cryogenic test chambers, in particular to a multi-layer cryogenic test chamber. Background technique [0002] The cryogenic test chamber is widely used in technical fields such as aerospace, chemical industry and biology, and the working temperature of the cryogenic test chamber is generally required to be -196°C. The cryogenic test chamber can be used to carry out cryogenic tests on workpieces, and can also be used to store cryogenic media. Most of the current cryogenic test chambers only have a two-layer structure. The outer layer is vacuum insulation, and the inner layer is the interior of the low-temperature test chamber. It will be lost quickly and the loss will be large, and the current test chamber cools down slowly. In the actual working environment, it is often necessary to quickly cool down the test chamber to achieve good results. Therefore, there is an urgent need for a new cryogenic test ch...

AI Technical Summary

Problems solved by technology

Most of the current cryogenic test chambers only have a two-layer structure. The outer layer is vacuum insulation, and the inner layer is the interior of the low-temperature test chamber. It will be lost quickly and the loss will be large, and the current test chamber cools down slowly. In the actual working environment, it is often necessary to quickly cool down the test chamber to achieve good results.

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