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

Abstract

The invention discloses a test device for testing the airtightness of a high-pressure ball valve and a test and calibration method of the test device. The test device comprises a workbench and a testtool. The test tool is fixedly arranged at the center of the upper surface of the bench top of the workbench. The test tool is used for testing a to-be-tested ball valve. The test tool comprises a workbench mounting plate, a tool bottom plate, a clamping air cylinder fixing plate, a clamping air cylinder, an air outlet clamping block, an air inlet clamping block, a clamping block sliding rail, anair inlet clamping block spring, a rotating bolt, a safety stopping rod, a valve opening air cylinder fixing plate, a valve opening air cylinder, a valve opening motor fixing support, a valve openingmotor and a ball valve handle rotating tool. According to the invention, the problem that the existing manual airtightness test is low in test precision, complicated in operation, low in test efficiency, and lack of safety guarantee in the prior art can be overcome. The airtightness of ball valves can be automatically tested and adjusted. The test process can be controlled by adopting a programmable controller as a core. The test device is high in test precision, convenient to clamp and safe to test.

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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