A sealed belt cold and hot shock box

Abstract

The invention relates to thermal shock chambers, in particular to a thermal shock chamber with sealing belts and aims to solve the problems of proneness to collision or displacement of samples, poor airtightness, poor shock effects, low control precision and the like in a shock process in the prior art. The outer surfaces of four side walls of a sample case, the inner and outer sides of the sealing belts, the outer surfaces of two heat storage tanks and two cold storage tanks and the lateral sides of four rotating shafts are provided with a plurality of projections and grooves in alternate array, and consequently excellent sealing effects are achieved. After photoelectric receivers receive optical signals, a controller controls a motor to stop, and refrigeration or heating is started in order to realize thermal shock. The thermal shock chamber with the sealing belts has the advantages that the samples are less prone to displacement, adverse factors such as collision, displacement and the like are avoided, accuracy in control is achieved due to adoption of the controller, low cost, structural simplicity, convenience in operation, high shock efficiency and effectiveness in sealing are realized, and service life of the thermal shock chamber is greatly prolonged. Furthermore, the thermal shock chamber is applicable to thermal shock test of devices.

Description

technical field [0001] The invention relates to a thermal shock test chamber. Background technique [0002] The temperature shock chamber is a necessary test equipment in the fields of electrical appliances, aviation, aerospace, automobile, ship, chemical industry, weapons, etc. And performance degradation and changes or damage caused by thermal expansion and contraction of products. After continuous updating, the patents that have been published and successfully entered the market can be roughly divided into two types of structures: [0003] One type is two-box mobile (up and down or left and right), and the patent No. ZL201210061997.2 discloses a lift-type cold and hot shock box. The high and low temperature conversion speed of the cold and hot shock box is fast and the flexibility is high. However, due to the need to move the sample, the size of the test piece is constrained, and mechanical vibration will cause deviations in the test results. Driving device is more com...

AI Technical Summary

Problems solved by technology

[0006] 1. The mobile impact box needs to move the sample during the impact process, resulting in unfavorable factors such as collision and displacement. The initial data is not available due to the impact of the energy storage link, and it is difficult to displace large test objects. At the same time, the transmission device requires high precision, cold and hot Vulnerable to damage in alternating environments, reducing life expectancy and resulting in a corresponding increase in cost

[0007] 2. It is difficult to guarantee the tightness of the fixed impact box. When performing impact tests on large and medium-sized test pieces, due to the large sample box, the energy storage device stores insufficient energy, and the airflow movement is not smooth, resulting in slow heating and cooling speeds. , the impact efficiency is low, it is difficult to achieve the purpose of impact

[0008] 3. The cold and heat shock effect of the equipment is single, and because of the different uses of different test products, the environmental conditions they are in are also different

However, most cold and heat impact devices cannot change the impact effect according to requirements, which limits their wide application

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