Abstract：The vibration test and analysis is difficult to be conducted, and the valid ways are still lack, which causes many centrifugal pumps to exceed the standard vibration in a big potential risk. In order to solve the problem, the HG8908C, a vibration data collection system of Beijing Jinghang, was used to monitor the vibration signal on the centrifugal pump manufactured by Chongqing Pumps Company. The vibration signal characteristic of amplitude domain, time domain and frequency domain were analyzed in detail by fast fourier transforms(FFT). Besides, combined with the typical database of vibration faults, the faults, such as the friction fault between pump rotor and casing, and the poor supporting stiffness on pipe by balancing axis force(PBAF), were diagnosed. Based on the above mentioned diagnostic outcome and the static bending deflection of pump rator by FEM, the install center of pump rotor was adjusted, the thickness of PBAF was increased, the support as welded among PBAF and pump body and other solutions were carried out. The test results show that the solution ways have a positive effect on it, and the pump can work for hours in a good state. The test results show that the fault diagnosis methods and the solution ways can solve better the matters of vibration faults on the centrifugal pumps, which is of a certain value to the similar problems.
雪增红*, 曹潇, 王天周. 离心泵机组振动故障诊断与分析[J]. 排灌机械工程学报, 2018, 36(6): 472-477.
XUE Zenghong*, CAO Xiao, WANG Tianzhou. Vibration test and analysis on the centrifugal pump. Journal of Drainage and Irrigation Machinery Engin, 2018, 36(6): 472-477.
王其磊,陈国栋. 多级离心泵转子的流固耦合特性及试验分析[J]. 流体机械,2015,43(7):10-15.
WANG Qilei,CHEN Guodong. Characteristic and expe-rimental of fluid-structure interaction of multistage pump rotor[J]. Fluid machinery,2015,43(7):10-15.(in Chinese)
潘希伟,杨曙东,史有程,等. SCR尿素泵研究进展及关键技术分析[J]. 江苏大学学报(自然科学版), 2017, 38(3): 280-288.
PAN Xiwei,YANG Shudong,SHI Youcheng, et al. Research progress and key technologies analysis of SCR urea pump[J].Journal of Jiangsu University(natural science editions), 2017, 38(3): 280-288.(in Chinese)
SONG Huaide,XI Ninggang,MA Wenying,et al. Reliability analysis of the self-balancing type high pressure multistage oil pump[J]. Fluid machinery,2016,44(5):60-62.(in Chinese)
毕文阳,江志农,刘锦南. 往复压缩机气阀故障模拟实验与诊断研究[J]. 流体机械,2013,41(6):6-10.
BI Wenyang,JIANG Zhinong,LIU Jinnan. Research on reciprocating compressor value fault simiulation experiments and diagnosis[J]. Fluid machinery, 2013,41(6):6-10.(in Chinese)
李伟. Bently 3500监测系统在300 MW机组汽轮机本体监测上的应用[J]. 自动化信息, 2011(5):82-85.
LI Wei. Application of Bently 3500 monitoring system in steam turbine noumenon of 300 MW generating set[J]. Automation information,2011(5):82-85.(in Chinese)
李娜. BH5000R在线监测系统往复压缩机的应用[J]. 石化技术,2016,23(6):82.
LI Na. Application of BH5000R online monitoring system in reciprocating compreessors[J]. Petrochemical industry technology,2016,23(6):82.(in Chinese)
蔡立新. Bently3500型监测系统测量数据在DCS操作站上的显示[J]. 自动化应用, 2011(2):65-66.
CAI Lixin. Measured data of Bently 3500-type monitor system displayed in DCS operation station[J]. Automation application,2011(2):65-66.(in Chinese)
黄志坚,高立新,廖一凡,等. 机械设备振动故障监测与诊断 [M]. 北京:化学工业出版社,2010:102-321.
刘超. 离心泵振动故障分析及排查措施[J]. 化工设备与管道,2016,53(4):64-65.
LIU Chao. Analysis of fault due to vibration occurred in centrifugal pump and troubleshooting measures[J]. Process equipment & piping 2016,53(4):64-65.(in Chinese)
陈钊,任瑞冬,符娆. 一种基于时域滤波算法的振动信号有效值计算方法研究[J]. 现代机械, 2015(3):52-55.
CHEN Zhao,REN Ruidong,FU Rao. A research of vibration signal RMS value calculation based on time-domain filtering altorithm[J]. Modern machinery,2015(3):52-55.(in Chinese)
杨志伊,郑文. 设备状态监测与故障诊断 [M]. 北京:中国计划出版社,2012:60-66.
韩清凯,于涛,王德友,等. 故障转子系统的非线性振动分析与诊断方法 [M]. 北京:科学出版社,2010:37-65.
SAKTHIVEL N R,SUGUMARAN V,BABUDEVAS-ENAPATI S. Vibration based fault diagnosis of monoblock centrifugal pump using decision tree[J]. Expert systems with applications,2010,37(6):4040-4049.