Test device for testing airtightness of high-pressure ball valve and test and calibration method thereof

Abstract

The invention discloses a high-pressure ball valve air tightness test device and a test and calibration method. The test device includes a workbench and a test tool, the test tool is installed and fixed at the center of the upper surface of the workbench, and the test tool is used for testing the ball valve to be tested; the test tool includes a workbench mounting plate, a tool bottom plate, Clamping cylinder fixing plate, clamping cylinder, air outlet clamping block, intake clamping block, clamping block slide rail, intake clamping block spring, rotating bolt, safety bar, valve opening cylinder fixing plate, valve opening cylinder, valve opening motor Fixed bracket, valve opening motor and ball valve handle rotating tooling. The present invention overcomes the problems of low test accuracy, complex operation, low test efficiency and lack of safety guarantee encountered in the existing manual air tightness test. In order to realize the automatic test and adjustment of the air tightness of the ball valve, a programmable controller As the core to realize the control of the testing process, the invention has high testing precision, convenient clamping and safe testing.

Description

technical field [0001] The invention relates to an airtightness testing device, in particular to a high-pressure ball valve airtightness testing device and a testing and calibration method. Background technique [0002] High-pressure ball valve is an important part commonly used in special industries. High-pressure ball valve has the action of rotating 90 degrees. The cock body is a sphere with a circular through-hole or channel passing through its axis. The ball valve is mainly used to cut off, distribute and change the flow direction of the medium in the pipeline. It only needs to be rotated 90 degrees and a small rotational torque can be closed tightly. At present, the air tightness test method of high-pressure ball valves is generally manual testing, and the test hose is passed into the water to observe the number of leaking air bubbles to judge whether the ball valve under test is good or bad. Manual testing has low precision, complicated operation, low testing efficie...

AI Technical Summary

Problems solved by technology

Manual testing has low precision, complicated operation, low testing efficiency, and no safety guarantee, resulting in inaccurate and poor consistency of the final test results, and in the case of high-pressure test gas, if the operation is not standardized, it is easy to cause personal injury. Accurate, fast and Safe and convenient testing has become a technical bottleneck for high-pressure ball valve manufacturers

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