除氧器水位调节阀喘动原因分析及处理

Analysis and Treatment of the Panting Causes of Water Level Regulating Valve in Deaerator

除氧器水位调节阀在进行易损件更换后的校验时,阀门在手动控制给定信号下TZID定位器供气压力表和控制信号输出压力表指针大幅波动,流量放大器间歇排气,阀位出现喘动。论文对此进行分析,并定位故障点为61H流量放大器密封面泄漏,供气压力与输出压力连通。通过更换新备件,消除了故障。

In the calibration of deaerator water control valve after the replacement of wearing parts,TZID positioner’s air supply and control signal output pressure gauges fluctuated widely under manually given signals,and the flow amplifier intermittently exhaust,the valve position is panting while the61H booster exhausted intermittently and valve position varied.This paper analyzed the phenomenon and found out that the fault point is the sealing surface leakage of61H flow amplifier,and the gas supply pressure is connected with the output pressure.The failure is eliminated by replacing the new spare parts.