Explosion-proof high-low-temperature test chamber

Abstract

The invention discloses an explosion-proof high and low temperature chamber for detecting auto parts performance, including samples explosion-proof box and electrical explosion-proof box; the said samples explosion-proof box has a nitrogen tank air loop outside, used to charge into nitrogen to the samples explosion-proof box, making oxygen content to largely 2%, and oxygen content exhausting and the detection circuit, for detecting the oxygen content in the box and the combustible gas content; the said electrical explosion-proof box is used for the power supply of the sample explosion-proof box and taking control, also including fresh air supply circuit to provide clean air to electrical explosion-proof box, and the power supply circuit to supply the said chamber. The invention can meet the load fuel testing requirements, and the security explosion-proof agrees with the national standards, and simple structure, low price.

Description

technical field [0001] The invention relates to an explosion-proof high and low temperature test box for testing the performance of auto parts. Background technique [0002] In the R&D and production process of auto parts, it is necessary to simulate the use or storage environment and do various tests to determine the actual performance and defects of the parts. [0003] When conducting tests, it is sometimes necessary to conduct high and low temperature cycle tests with fuel to truly simulate various functions of auto parts. The media used in the test are: various gasoline, kerosene, diesel. The test medium enters the test sample through the pipeline. The test sample is placed in the cavity of the temperature box. The test sample for the test is not explosion-proof, but the test sample is a flammable substance that has no normal release and has limited abnormal release (GB3836.5) (that is, under normal circumstances, the flammable substance will not released, even if the...

AI Technical Summary

Problems solved by technology

[0004] At present, domestic high and low temperature environmental test chambers do not have explosion-proof capabilities, which prevents users from loading fuel for testing

However, there are very few manufacturers in the world that can produce explosion-proof high and low temperature test chambers, and they are all made for non-calibration.

[0005] The existing explosion-proof high and low temperature test chambers can be divided into two categories, one is positive pressure nitrogen-filled explosion-proof, the representative manufacturer is Weiss Company of Germany, which is characterized by simple principle, a large number of non-explosion-proof devices, lower product prices, and its explosion-proof The measure is integrated into the overall explosion-proof measures of the plant. A single machine cannot obtain the nationally recognized explosion-proof certification, the control software is complicated, and the daily use cost is high; device, expensive

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