电动调节阀阀位反馈信号剧烈波动分析及处理  

Analysis and Processing of Violent Fluctuation of Feedback Signal of Electric Regulating Valve

作　　者：刘安林 王登辉[1] 何振林 彭军[1] 李文钰[1] 李奕 Liu Anlin;Wang Denghui;He Zhenlin;Peng Jun;Li Wenyu;Li Yi(Nuclear Power Institute of China,Chengdu,610213,China)

机构地区：[1]中国核动力研究设计院

出　　处：《仪器仪表用户》2020年第1期68-71,共4页Instrumentation

摘　　要：针对某汽水分离器压力水位控制系统调压阀和疏水阀(两阀均为电动调节阀)阀位指示表在无人为操作情况下出现异常波动的问题,开展了一系列的针对性排查工作,分别对系统各模块电源、调压阀和疏水阀阀位控制信号、反馈信号等进行采样分析,分析结果表明电源和控制信号正常,反馈信号出现异常波动。为定位干扰源,运行人员采用分时工作方式,依次停运系统各功能模块,最终发现干扰为一变频泵工作引起。操作人员采取了一系列处理措施,最终消除了干扰,系统恢复正常。此文所述问题和解决方式虽是针对两个电动调节阀,但对于解决其他类似设备的电磁干扰问题也具有重要的引导作用。In this paper, a series of targeted checks have been carried out on the problem of abnormal fluctuations in the pressure regulating valve and hydrophobic valve of the pressure water level control system of soda separator(both valves are electric regulating valves). By sampling and analyzing each power supply,the control signals and feedback signals of pressure regulating valve and hydrophobic valve, the results show that the power supply and control signals are normal, and the feedback signals have abnormal fluctuations. In order to locate the source of interference, the operator adopts a time-sharing mode of work and stops the function modules of the system in turn. Finally, it is found that the interference is caused by the operation of a variable frequency pump. The operator took a series of treatment measures, eventually eliminating the interference, and the system returned to normal. Although the problems and solutions described in this paper are aimed at two electric regulating valves, they also have an important guiding role in solving electromagnetic interference problems of other similar devices.

关 键 词：汽水分离器 变频泵 异常波动 电磁干扰 

分 类 号：TP23[自动化与计算机技术—检测技术与自动化装置]