Analysis and Treatment of the Vibration Problem of AC Lubricating Oil Pump

doi:10.11930/j.issn.1004-9649.201904070

Abstract

Abstract: In order to solve the vibration problem of the AC lubricating oil pumps for the feed water pump driving turbine and ensure the safe operation of the unit, the method of numerical calculation combined with on-site vibration testing and analysis is adopted to diagnose the cause of the fault, then design a reasonable reinforcement scheme and eventually solve the vibration fault problem. The results show that the resonance caused by the weak vertical integral stiffness of the supporting oil tank roof and the uneven deformation of the roof from the tilt of the pump foot are the major reasons contributing to the large vibrations of the AC lubricating oil pumps.

Key words: oil pump, vibration, stiffness, resonance, non-uniform deformation, numerical calculation

HE Xiaofeng, LIU Xiaofeng, LU Xiulian, HUA Dongqi, MA Yunxiang, HE Lipeng, TANG Pengtao. Analysis and Treatment of the Vibration Problem of AC Lubricating Oil Pump[J]. Electric Power, 2020, 53(1): 169-176.

Add to citation manager EndNote|Ris|BibTeX

URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.201904070

https://www.electricpower.com.cn/EN/Y2020/V53/I1/169

References

[1] 张永明. 650 MW超临界机组大型循环水泵振动原因及处理[J]. 江苏电机工程, 2006, 25(2):17-18
ZHANG Yongming. Water circulating pump of 650 MW super critical pressure unit vibration and its solution[J]. Jiangsu Electrical Engineering, 2006, 25(2):17-18
[2] 何小锋. 大容量机组轴流风机振动问题分析[J]. 热力发电, 2017, 46(1):129-132
HE Xiaofeng. Vibration analysis of axial flow fan for large capacity unit[J]. Thermal Power Generation, 2017, 46(1):129-132
[3] 郑文涛. 立式循环水泵振动与异响原因分析及解决措施[J]. 广东科技, 2009(4):136-137
[4] 何国安, 龚伟, 李志强, 等. 立式泵组结构共振分析及治理[J]. 热力发电, 2015, 44(11):94-97
HE Guoan, GONG Wei, LI Zhiqiang, et al. Structure resonance of vertical pump unit:fault analysis and countermeasures[J]. Thermal Power Generation, 2015, 44(11):94-97
[5] 何国安, 张卫军, 孙贵秋, 等. 传递函数在锅炉给水泵结构共振故障处理中的应用[J]. 中国电力, 2010, 43(1):46-50
HE Guoan, ZHANG Weijun, SUN Guiqiu, et al. Transfer functions application on processing structure resonance faults in boiler feed water pump[J]. Electric Power, 2010, 43(1):46-50
[6] 陈伯权, 刘明军, 吴志强. 600 MW 机组凝泵变频运行振动分析及治理[J]. 浙江电力, 2013(1):56-58
CHEN Boquan, LIU Mingjun, WU Zhiqiang. Cause of analysis and control over vibration condensate pump of 600 MW units in variable-frequency operation[J]. Zhejiang Electric Power, 2013(1):56-58
[7] 何小锋, 卢修连, 刘晓锋, 等. 大型立式泵振动问题分析及治理[J]. 山东电力技术, 2018, 45(3):69-72
HE Xiaofeng, LU Xiulian, LIU Xiaofeng, et al. Vibration analysis and treatment of large vertical pump[J]. Shandong Electric Power, 2018, 45(3):69-72
[8] 马运翔, 彭辉, 刘晓锋, 等. 抽水蓄能机组推力外循环润滑油系统异常振动故障治理[J]. 水电与抽水蓄能, 2019, 5(1):108-112
MA Yunxiang, PENG Hui, LIU Xiaofeng, et al. Treatment of abnormal vibration fault of pumped storage unit thrust external circulation lubricating oil system[J]. Hydropower and Pumped Storage, 2019, 5(1):108-112
[9] 张黎明, 户传斌, 秦晓东. 立式凝结水泵电机振动解决[C]//全国火电100-200 MW 级机组技术协作会年会论文集. 桂林, 2009:42-44.
[10] 陶泽宇. 俄供AB1700L-24M 型立式电动机检修调整困难的解决方法[C]//全国火电大机组(600 MW 级)竞赛第9届年会论文集. 扬州, 2005:293-297.
[11] 熊丽萍, 王福忠. 凝泵变频改造浅析[J]. 机电工程技术, 2013, 42(10):29-33
XIONG Liping, WANG Fuzhong. Analysis of the condensate pump frequency conversion transformation[J]. Mechanical and Electrical Engineering Technology, 2013, 42(10):29-33
[12] 蒋勇, 王军, 程秀芝. 火电厂循泵电机双速改造及效果[J]. 电力科学与工程, 2010, 26(3):63-65
JIANG Yong, WANG Jun, CHENG Xiuzhi. Implement and efficiency analysis on two-speed alternation of circulating water pump motor in thermal power plant[J]. Electric Power Science and Engineering, 2010, 26(3):63-65
[13] 侯钢剑, 吴小川, 刘少恒, 等. 火力发电厂凝泵节能改造及振动问题治理[J]. 应用能源技术, 2011(2):28-32
HOU Gangjian, WU Xiaochuan, LIU Shaoheng, et al. Energy-saving power plant condensate pump and vibration control[J]. Applied Energy Technology, 2011(2):28-32
[14] 吴亚军, 杨天海, 姜朝辉, 等. 大型汽轮机组轴承座动力吸振现象分析[J]. 中国电力, 2017, 50(10):116-119
WU Yajun, YANG Tianhai, JIANG Chaohui, et al. Analysis on the dynamic vibration absorption of bearings of the large turbo unit[J]. Electric Power, 2017, 50(10):116-119
[15] 张学延. 汽轮发电机组振动诊断[M]. 北京:中国电力出版社, 2008.
[16] 李振, 胡大千. 一种电机振动不稳定现象诊断和治理[J]. 中国电力, 2017, 50(3):65-70
LI Zheng, HU Daqian. Diagnosis and treatment of an unstable motor vibration case[J]. Electric Power, 2017, 50(3):65-70
[17] 蒋小利, 何荣尧. 弹簧基础的汽轮发电机振动异常原因分析及处理[J]. 中国电力, 2018, 51(7):95-102
JIANG Xiaoli, HE Rongyao. Cause analysis and treatment of abnormal vibration of the steam turbine for spring-supported foundation table[J]. Electric Power, 2018, 51(7):95-102
[18] 欧鸣雄,王岩,严建华,等. 立式循环泵结构动刚度对转子振动特性的影响[J]. 核动力工程, 2013, 34(6):36-39
OU Mingxiong, WANG Yan, YAN Jianhua, et al. Effect of dynamic structure stiffness on rotor characteristics of vertical pump[J]. Nuclear Power Engineering, 2013, 34(6):36-39
[19] 毛文贵,傅彩明,李建华. 立式电机转子的振动特性仿真研究[J]. 江苏电机工程, 2009, 28(1):54-57
MAO Wengui, FU Caiming, LI Jianhua. Simulation research on vibration characteristics of vertical motor rotor[J]. Jiangsu Electrical Engineering, 2009, 28(1):54-57
[20] 许本文, 焦群英. 机械振动与模态分析基础[M]. 北京:机械工业出版社, 1998.