Method for evaluating friction and wear performance of valve and predicting service life under simulating working conditions

Abstract

The invention relates to a method for evaluating the friction and wear performance of a valve and predicting the service life under simulating working conditions. By simulating the actual working condition environment in combination with the mature sensing technology, the variation conditions of the operation torque are monitored through a torque sensor, and then the wear conditions of the valve are reflected; the pressure intensity variation of a closed containing cavity is monitored through a pressure sensor, and the static sealing performance of the valve is reflected; by recording the revolutions of a driver through a counter, through the relationship between the revolutions of the driver and the switching on and off frequency of the valve, the switching on and off frequency of the valve is calculated, and then the service life of the valve is predicted. By placing the practical use valve in an artificially-set working condition environment, the effect of simulating actual workingconditions is realized, the friction and wear performance of the valve is evaluated through torque and pressure intensity indexes, the service life of the valve is predicted according to the switchingon and off frequency index, the evaluating result and the predicting result are closer to the actual working condition results, and the accurate guiding effect on actual production is realized.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to a method for evaluating valve friction and wear performance and predicting service life under simulated working conditions. Background technique [0002] In modern industry, especially in the field of coal chemical industry, valves are used in high-temperature, high-pressure and highly corrosive working conditions, and their working form is frequent reciprocating opening and closing. Working under such working conditions for a long time will seriously shorten the valve life. service life. At present, aiming at the failure forms of valves at home and abroad, combined with working forms and working conditions, the performance of valves is improved through surface treatment technology, advanced manufacturing technology and equipment, and structural optimization, and the service life of valves in high-strength and harsh working conditions is extended. . In order to be able to accura...

AI Technical Summary

Problems solved by technology

However, this test method does not take into account the operating conditions of the valve. The test is carried out under idealized friction and wear conditions. The test results will be quite different from the actual results of the valve. At the same time, the evaluation index is only the number of reciprocations, which can only be used as life expectancy index

Images