基于LabVIEW的卧式离心泵故障诊断系统设计  

Design of Fault Diagnosis System for Horizontal Centrifugal Pump Based on LabVIEW

作　　者：付强[1,3] 庄祥 黄倩 朱荣生 林彬[1,3] FU Qiang;ZHUANG Xiang;HUANG Qian;ZHU Rongsheng;LIN Bin(Research Center of Fluid Machinery Engineering and Technology Jiangsu University,Zhenjiang 212013 China;China Nuclear Power Engineering Co.,Ltd.,Beijing 100840 China;The Joint Lab of Intelligent O&M for NPP Pump,Zhenjiang 212013 China)

机构地区：[1]江苏大学流体机械工程技术研究中心,江苏镇江212013 [2]中国核电工程有限公司,北京100840 [3]核电泵及装置智能诊断运维联合实验室,江苏镇江212013

出　　处：《西华大学学报（自然科学版）》2022年第6期26-33,共8页Journal of Xihua University:Natural Science Edition

基　　金：安徽省重点研究和开发计划(201904a05020070);泰州市科技支撑计划(TG201918)。

摘　　要：针对卧式离心泵工作环境恶劣、常发生故障以及现有诊断系统功能不完善等问题,根据离心泵异常振动的时域特征与频域特征,设计基于LabVIEW平台的卧式离心泵状态监测与故障诊断系统。该系统通过采集模拟电压信号,实现对泵的压力、振动和流量等信号的实时处理与状态监测,基于轴心轨迹、时频分析、小波包-AR谱分析和神经网络的故障诊断方法,对离心泵振动信号进行多样化的数据综合分析,实现对泵转子部件与滚动轴承状态的智能化识别。试验结果表明,系统对离心泵的水力性能和健康状态的诊断与预测的成功率达到96%以上。这对机组运行工况的调整和停机检修维护的决策提供了理论依据,在保证机组安全的同时最大程度地降低了停机时间,减少了机组运行的维护成本。In view of the problems such as the harsh working environment of horizontal centrifugal pumps,frequent failures and the imperfect functions of existing diagnostic systems,this paper designs a state monitoring and fault diagnosis system for horizontal centrifugal pumps based on the time domain characteristics and frequency domain characteristics of abnormal vibration of centrifugal pumps based on Lab-VIEW platform.The methods of axis trajectory,time-frequency analysis,wavelet packet AR spectrum analysis and neural network are applied to the system.The test of single-stage single-suction horizontal centrifugal pump is confirmed that the system can monitor and diagnose the hydraulic performance and health state of centrifugal.The application of the system has a certain practical significance for the safety of the unit.The system can reduce the shutdown time and the operation and maintenance cost.

关 键 词：卧式离心泵 故障诊断 时频分析 小波包-AR谱 神经网络 

分 类 号：TP277[自动化与计算机技术—检测技术与自动化装置]