Airtight type tested pieces air-leakage detecting device

Abstract

The invention discloses a detecting device for the leakage of gas-tight test piece including the aqua storage tank of the watertight test piece and the air compressing device to fill the pressure to the gas-tight test piece and the measuring cup to collect the leaking gas. The aqua storage tank is connected with the test piece inside and the conduit of the air compressing device in outside which is installed with the stabilizing voltage device. The water storage vessel has a flooding pipe connected to the out and a measuring cup. The invention transforms the reverse scale reading of the original air volume to the forward scale reading of the liquid volume by the liquid drained by leaking gas of the closed test piece. Therefore, it can assure the coherence of the reading and the fact leaking quantity.

Description

technical field [0001] The invention relates to a device which uses a measuring cup to collect the volume of leakage bubbles of an air-tightness test device per unit time and conducts an air leakage test. Background technique [0002] Currently used for air tightness test of high temperature clamps 3HB6535-60, 3HB6535-52, GJB3821 / 3 / 52, GJB3821 / 3 / 42GJB3821-99, GJB3579-99 and for pipes, joints, sealing rings, adapters, Relevant tests on parts such as hydraulic oil tanks need to be carried out after the parts are produced, such as figure 2 Leakage test for the device shown. This prior art test device is to use measuring cup to collect from figure 2 The high temperature clamp connection shown is the size of the leakage air bubble volume. Its disadvantages are: [0003] 1. It adopts an open water storage container, and the air leakage test is carried out by collecting air bubbles with a reverse measuring cup. The accuracy of air leakage data collected by air bubbles is poor....

AI Technical Summary

Problems solved by technology

Bubble collection air leakage data accuracy is poor

Because after the bubbles leak from the high-temperature clamp, a certain amount of bubbles adhere to the outer surface of the high-temperature clamp and the inner wall of the measuring cup, and do not concentrate at the bottom of the measuring cup, which will cause the reading of the measuring cup to be inconsistent with the actual leakage.

[0004] 2. The device uses a measuring cup to directly read the data of air and gas is inaccurate

Because it buckles the measuring cup backwards into the water storage container, it is inconvenient to operate, lacks balance, and has poor reading accuracy

[0005] 3. The working pressure of the system pressure regulation method is unstable

Since the working pressure of the compressed gas cylinder is 30 to 50 times that of the high-temperature clamp, the working pressure of the high-temperature clamp is unstable, and the decompression is only achieved through switch A, which is difficult to adjust and affects the accuracy of the test.

[0006] 4. Poor security

If the switch A is not adjusted properly, once the working pressure in the high-temperature clamp is too large, the high-temperature clamp will be broken, which will endanger the safety of the operator.

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