Gas constant temperature device for detecting sealing performance of parts

Abstract

The invention discloses a gas constant temperature device for detecting sealing performance of parts. The device comprises a heat exchange mechanism which is configured between a gas source and part sealing detection equipment, and is used for adjusting the temperature of gas supplied by the gas source to a target temperature and then supplying the gas to the part sealing detection equipment. The heat exchange mechanism provided by the embodiment of the invention is configured between the gas source and the part sealing detection equipment, and the temperature of the gas entering the part sealing detection equipment can be adjusted, so that the purpose of reducing the test pressure difference error is achieved. The double-layer spiral radiating pipe is adopted, so that the contact area between the double-layer spiral radiating pipe and cooling liquid is utilized to the greatest extent, heat transfer among the cooling liquid is reduced, and the heat exchange efficiency is higher; and the size is changed flexibly, the structure is simple, and the cost is lower. The size and the heat exchange power can be flexibly changed according to equipment with different powers.

Description

technical field [0001] The invention relates to the technical field of sealing testing equipment, in particular to a gas constant temperature device for testing the sealing performance of components. Background technique [0002] my country's automobile manufacturing industry is booming, and the pursuit of quality is getting higher and higher, which makes the production requirements of auto parts more and more stringent. Among them, the airtightness of auto parts is a rigid standard for measuring quality, because if the airtightness of auto parts is not enough, the internal oil and water will penetrate into other parts, causing the entire car working system to collapse and endangering the personal safety of drivers. Therefore, it is essential to perform airtight leak detection on auto parts in production. [0003] The sealing requirements for components in the automotive field have always been high, and there is a trend of getting higher and higher. The national standard a...

AI Technical Summary

Problems solved by technology

Compressed air is the most commonly used. Although the reference and simplified theories of each manufacturer are different, they all use the same set of test systems, so they will face the same risks.

That is, if the compressed air is inconsistent with the temperature of the workshop, after the gas is pressed into the controller, there will be a temperature change with the housing, which will cause a change in internal pressure and seriously interfere with the detection effect

There is a practice of using an air storage tank to balance the temperature on the market, but the cost is relatively high

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