基于阈值的电动调节阀故障检测方法研究  

Study of Inspecting Method for Electric Control Valve Based on Threshold

作　　者：代希文 周犊 赵桂生 邵浙梁 于新海 周邵萍[1] Dai Xiwen;Zhou Du;Zhao Guisheng;Shao Zheliang;Yu Xinhai;Zhou Shaoping(East China University of Science and Technology,Shanghai 200237,China;China Nuclear Power Operations Co.,Ltd,Shenzhen 518000,China;China Nuclear Power Technology Research Institute Co.,Ltd,Shenzhen 518000,China)

机构地区：[1]华东理工大学,上海200237 [2]中广核核电运营有限责任公司,广东深圳518000 [3]中广核研究院有限公司,广东深圳518000

出　　处：《化工设备与管道》2022年第3期73-79,100,共8页Process Equipment & Piping

基　　金：国家自然科学基金项目(编号:51975213)。

摘　　要：电动调节阀在石化、核电等领域中有着广泛应用,但由于其结构复杂、工况恶劣、故障众多且呈现非线性关系等特点,开展电动调节阀在线监测与故障检测的研究显得尤为重要。为此,基于多年的经验提出一种基于阈值的故障检测方法,并搭建在线监测实验平台,通过模拟卡涩故障实验来验证故障检测方法的可行性。针对实验信号的信噪比低和信号微弱等问题,使用了一种基于均值滤波和S-G滤波的阀门数据处理方法,研究结果表明:基于阈值的故障检测的方法,能有效地识别电动调节阀的运行状态。Electric control valves are widely used in petrochemical,nuclear power and other industries,however due to their complex structure,poor working conditions,existed faults and non-linear relationships,it is particularly important to carry out research on online status assessment and fault diagnosis of electric control valves.In this paper,with years of experience,a state evaluation method based on threshold was presented,and an online monitoring experimental platform was built to verify the feasibility of the evaluation method by simulating the jam failure experiment.Aiming at the problems of low signal-to-noise ratio and weak signal of experimental signal,a valve data processing method based on mean filtering and S-G filtering was proposed,and the results showed that the threshold-based state evaluation method can effectively identify the operating state of the electric regulation valve.

关 键 词：电动调节阀 卡涩故障 阈值 故障检测 数据处理 

分 类 号：TQ050.2[化学工程] TH3[机械工程—机械制造及自动化]