Case study on the effectiveness of condition monitoring techniques for fault diagnosis of pumps in thermal power plant

Q3 Engineering Mechanics and Mechanical Engineering Pub Date : 2019-06-01 DOI:10.2478/mme-2019-0010

Caneon Kurien, A. Srivastava

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引用次数: 2

Abstract

Abstract A case study was carried out to investigate the effectiveness of condition monitoring techniques in the early failure detection of pumps in a thermal power plant. Various condition monitoring techniques used in this case study involved vibration analysis, motor current signature analysis, noise monitoring and wear debris analysis. These techniques were applied on the three pumps, namely boiler feed water pump, auxiliary cooling water pump and condensate extraction pump, which have to work continuously for the operation of the thermal power plant. Vibration analysis of the auxiliary cooling water pump showed that there is a rising trend in the acceleration values at its driving and non-driving end indicating the deterioration of bearings. Motor current index range of all the pumps was found to be within acceptable limits. Wear debris analysis of lubricant in the hydraulic coupling of boiler feed water pump indicated the presence of sand, dirt and low alloy steel sliding wear particles in it. Condition monitoring techniques have been proved to be an effective technique in early failure detection of pumps.

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状态监测技术在火电厂水泵故障诊断中的有效性案例研究

摘要通过一个案例研究，探讨了状态监测技术在火电厂水泵早期故障检测中的有效性。本案例研究中使用的各种状态监测技术包括振动分析、电机电流特征分析、噪声监测和磨损碎片分析。这些技术被应用于三台泵上，即锅炉给水泵、辅助冷却水泵和冷凝水抽取泵，它们必须连续工作才能满足火力发电厂的运行。对辅助冷却水泵的振动分析表明，其驱动端和非驱动端的加速度值有上升趋势，表明轴承的老化。发现所有泵的电机电流指数范围都在可接受的范围内。通过对锅炉给水泵液力耦合器润滑油磨损碎屑的分析，发现其内部存在砂、污垢和低合金钢滑动磨损颗粒，状态监测技术已被证明是早期检测水泵故障的有效技术。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Mechanics and Mechanical Engineering Engineering-Automotive Engineering

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