Leakage test mechanism used for built-in products and test method thereof

Abstract

The invention discloses a leakage test mechanism used for built-in products. The leakage test mechanism comprises a sealing mechanism, a cavity movement system, a product clamping system, a test execution system, and a control system, the sealing mechanism is formed by a sealing cover plate and a sealing cavity, the sealing cover plate is arranged at one end of the sealing cavity, and the cavity movement system and the test execution system are both connected with the control system. According to the leakage test mechanism for the built-in products, gas flow leakage is converted to the pressure drop slope under the constant pressure via a pressure transmitter in the test execution system so that the cost of a precision flowmeter is reduced, and stable and high-efficiency detection process is guaranteed; a product clamping positioning sealing unit and a measuring execution mechanism are reasonably integrated so that equipment place is reasonably employed and the investment cost of the enterprise place is effectively lowered; besides, continuous batch air-tightness tests can be automatically conducted via the control of the control system, the detection cycle is greatly shortened, and the detection efficiency is improved.

Description

technical field [0001] The invention relates to a testing mechanism, in particular to a leakage testing mechanism for built-in products. Background technique [0002] Common methods for gas leak detection include bubble method, smear method, chemical gas tracer leak detection method, differential pressure method and so on. Traditional leak detection methods mostly use bubble method and smear method. The bubble method is to immerse the workpiece in water, fill it with compressed air, and then collect the bubbles leaking from it within a certain period of time to measure the leakage. The smearing method is to smear a liquid that is prone to bubbles such as soapy water on the surface of the workpiece filled with a certain air pressure inside, and observe the situation of the bubbles to detect the size of the leakage. These two methods are easy to operate, and can directly observe the leakage location and leakage situation. However, since the leakage location and several l...

AI Technical Summary

Problems solved by technology

However, when the leak test requires a certain pressure of gas to be injected, the gas flow rate leaked from the test chamber is used as the leak judgment standard, and the cost of the flow meter is too high. In order to reduce the detection cost, the differential pressure method is evolved into the differential pressure trend method. , this detection method must have corresponding supporting institutions to ensure the stability of the test process and realize the automation of the detection process

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