Manual pressure reducing valve service life test system

Abstract

The invention relates to a manual pressure reducing valve service life test system. A driving motor is connected with a tested manual pressure reducing valve through a high-speed ratio reduction gearbox, a coupling, a connecting sleeve, a pressure regulating device and a stroke switch; the inlet cavity of the tested manual pressure reducing valve is connected with the gas source of a gas distribution stage through a pipeline; an electric contact pressure gauge is connected in parallel onto the pipeline; the outlet cavity of the tested manual pressure reducing valve is connected in parallel with three groups of valves through a pipeline; and a PLC is connected with the electrical contact pressure gauge, the driving motor, the stroke switch, a pressure transmitter, a two-position two-way electromagnetic valve A, a two-position two-way electromagnetic valve B and a gas leakage detector through a circuit, so that communication connections can be established between the PLC and each component. According to the manual pressure reducing valve service life test system of the invention, reasonable linkage, remote control, adjustability of interval times, the recordability and settability of the number of times of testing of electromagnetic valves can be realized through PLC and miniature relay integrated control and a PLC control panel; and problems in service life testing of non-ordinary industrial valves can be solved.

Description

technical field [0001] The invention relates to a manual decompression valve under the condition of a laboratory, under the action of the medium pressure, automatically performs a cycle operation from fully closed to fully open, and then from fully open to fully closed after a delay, and completes the set number of cycles Finally, it is a test system that detects the integrity of the main seal of the manual pressure reducing valve and automatically counts the normal working life of the manual pressure reducing valve. Background technique [0002] Ordinary manual pressure reducing valve life test system is that the air source is connected to the inlet port of the valve under test after passing through the manual stop valve, and the valve under test is opened and closed by manually adjusting the valve stem; a Manual stop valve, a relief solenoid valve, a pressure gauge, the solenoid valve realizes the delay and counting function through the time relay and the counter, to count...

AI Technical Summary

Problems solved by technology

[0004] The present invention mainly solves technical defects such as single life test system of ordinary manual pressure reducing valve, easy to generate noise, inability to realize intelligent and automatic control, and non-adjustable time relay, and provides a manual pressure reducing valve with strong versatility, good safety and stability. Pressure valve life test system

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