化工装置调节阀的维护与常见故障分析

Maintenance and Analysis of Common Faults for Control Valves in Chemical Plants

针对化工装置调节阀容易被腐蚀、冲蚀、气蚀、老化和损坏等问题,提出了在线和离线状态下化工装置中常见调节阀及附件的基本维护手段。介绍了调节阀及附件的几种常见故障发生的原因和处理方法,并按照其重要程度及工作条件对调节阀的检修周期给出了建议,以达到经济合理检修的目的,从而确保调节阀安全可靠和长周期运行。

Aiming at the problem that the control valves operated in chemical plants are easily to be corroded,eroded,aged and damaged,et al.the basic measures of maintenance online and offline for these commonly used control valves and their accessories are proposed.The causes of the common faults and related processing methods are introduced,and for economic and reasonable purposes,the preventive maintenance cycles based on their importance and operating conditions are suggested to ensure long term safety operation of the valves.