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Regulating valve how to carry out maintenance work?
The author: Time:2021/6/23

  调节阀因与工艺介质接触,固定阀座用的螺纹内表面易受腐蚀而使阀座松动,应重点进行检查。在高压差、有腐蚀性介质场合使用的调节阀,阀体内部经常受到介质的冲击和腐蚀,应检查其受腐蚀的程度。
  阀芯是调节阀的可动部件,受介质的冲蚀为严重,维修时应检查阀芯是否腐蚀、磨损,尤其是在高压差的情况下,阀芯受汽蚀影响更为突出。阀芯、阀杆损坏严重时应进行更换,还应检查阀芯与阀杆的连接是否松动。调节阀在小开度时振荡,对于新安装的阀门应检查流向是否装反了。阀杆动作迟钝、回差大时,应检查阀杆是否变形弯曲,阀盖连接螺钉有无松动等,还应考虑是否工艺管道的杂质、块渣等物掉入阀内。阀门泄漏是常见的问题,如阀杆处泄漏,法兰密封面泄品,应检查密封填料是否老化、裂损等。

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