立式主泵水膜涡动故障诊断及机理分析

doi:10.3901/JME.2020.11.089

机械工程学报 ›› 2020, Vol. 56 ›› Issue (11): 89-95.doi: 10.3901/JME.2020.11.089

扫码分享

立式主泵水膜涡动故障诊断及机理分析

王琇峰, 洪银聪, 丘大谋

西安交通大学机械工程学院西安 710049

收稿日期:2019-06-26 修回日期:2019-11-27 出版日期:2020-06-05 发布日期:2020-06-12
通讯作者: 王琇峰(通信作者),男,1980年出生,博士,副教授。主要研究方向为旋转设备故障预测与健康管理、汽车动力总成NVH技术。E-mail:wangxiufeng@xjtu.edu.cn
作者简介:洪银聪,男,1995年出生,硕士研究生。主要研究方向为振动信号分析与控制。E-mail:hychyc@stu.xjtu.edu.cn;丘大谋,男,1934年出生,教授。主要研究方向为轴承-转子动力学设计及故障诊断。E-mail:dmqiu@xjtu.edu.cn
基金资助:
国家自然科学基金研究群体资助项目（51421004）。

Fault Diagnosis and Mechanism Study of Water-film Whirl in Vertical Reactor Coolant Pumps

WANG Xiufeng, HONG Yincong, QIU Damou

School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049

Received:2019-06-26 Revised:2019-11-27 Online:2020-06-05 Published:2020-06-12

摘要/Abstract

摘要： 针对国内某核电厂多台立式反应堆冷却剂泵（以下简称主泵）均存在的低频振动问题，采用时频分析、二维全息谱等信号处理方法对现场采集的泵轴振动数据开展分析，总结启机、正常运行阶段泵轴振动数据时域、频域特征，根据信号特征推测主泵出现低频振动问题的根本原因为水润滑轴承水膜涡动故障。进一步地，针对上述推测开展立式转子滑动轴承水膜涡动故障振动机理研究。结合流体连续性理论和牛顿流体特性，解释水膜半速涡动频率特征；根据主泵轴承供水压力略高于15.4 MPa的运行工况，得到轴承内部润滑水压力分布特征，进一步分析润滑水压力合力，解释了水膜涡动导致自激振动的激励力。建立水膜涡动故障动力学数值模型，获得故障对应的振动特征。上述研究结果对立式转子水膜涡动故障诊断及其设计改进具有一定的参考价值。

关键词: 水膜涡动, 故障诊断, 立式主泵, 滑动轴承

Abstract: Aiming at the diagnosis of subsynchronous vibration problem which exists in multiple vertical reactor coolant pumps(RCPs for short)in a domestic nuclear power plant, the signal processing methods such as time-frequency analysis、2D holospectrum are employed to analyze the vibration data of pump shaft. The time domain and frequency domain characteristics of vibration data during start-up and normal operation phase is summarized, according to which the basic reason of the subsynchronous vibration problem of RCPs is thought to be water film whirl failure occurring in the water-lubricated bearing. The mechanism of water-film whirl problem of vertical sliding bearing is further studied aiming at explaining the above phenomenon. Based on the fluid continuity theory and Newtonian fluid characteristics, the frequency characteristics of the water-film half-speed whirl is explained. According to the fact that the bearing water supply pressure is slightly higher than 15.4 MPa in the operating condition, the pressure distribution characteristics of the lubricating water inside the bearing are obtained, and the direction of the resultant force of the lubrication water pressure is further studied, which shows that the exciting force of self-excited vibration is provided by the water film whirl. A dynamic numerical model of water-film whirl failure is established to obtain the corresponding vibration characteristics. The above research has certain reference value for the fault diagnosis of water-film whirl and design improvement of vertical rotor.

Key words: water-film whirl, fault diagnosis, vertical RCPs, sliding bearing

中图分类号:

TH113

王琇峰, 洪银聪, 丘大谋. 立式主泵水膜涡动故障诊断及机理分析[J]. 机械工程学报, 2020, 56(11): 89-95.

WANG Xiufeng, HONG Yincong, QIU Damou. Fault Diagnosis and Mechanism Study of Water-film Whirl in Vertical Reactor Coolant Pumps[J]. Journal of Mechanical Engineering, 2020, 56(11): 89-95.

参考文献

[1] CASTRO H F D,CAVALCA K L,NORDMAN R. Whirl and whip instabilities in rotor-bearing system considering a nonlinear force model[J]. Journal of Sound and Vibration,2008,317(1-2):273-293.
[2] MUSZYNSKA A. Stability of whirl and whip in rotor/bearing systems[J]. Journal of Sound and Vibration,1988,127(1):49-64.
[3] 李振宇. 水润滑径向滑动轴承水膜承载特性分析[D]. 上海:上海交通大学,2013. LI Zhenyu. Study on water-film bearing capacity of the water-lubricated journal bearing[D]. Shanghai:Shanghai Jiao Tong University,2013.
[4] 刘丽萍. 水润滑径向滑动轴承试验台的研制[D]. 武汉:华中科技大学,2011. LIU Liping. Development of water-lubricated radial sliding bearing test bench[D]. Wuhan:Huazhong University of Science and Technology,2011.
[5] 叶晓琰,冯耀宁,汪靖,等. 海水淡化泵水润滑轴承试验测试与分析[J]. 排灌机械工程学报,2015,33(6):510-515. YE Xiaoyan,FENG Yaoning,WANG Jing,et al. Test and analysis of water-lubricated bearing of seawater desalina-tion pump[J]. Journal of Drainage and Irrigation Machinery Engineering,2015,33(6):510-515.
[6] GENGYUAN G,ZHONGWEI Y,DAN J,et al. CFD analysis of load-carrying capacity of hydrodynamic lubrica-tion on a water-lubricated journal bearing[J]. Industrial Lubrication and Tribology,2015,67(1):30-37.
[7] TANAMAL T K H R. Modelling of fluid flow in multiple axial groove water lubricated bearings using computational fluid dynamics[D]. Brisbane,Austalia:Queensland University of Technology,2007.
[8] ZHAI L,LUO Y,WANG Z,et al. Nonlinear vibration induced by the water-film whirl and whip in a sliding bearing rotor system[J]. Chinese Journal of Mechanical Engineering,2016,29(2):260-270.
[9] ZHAI L,KITAUCHI S,MIVAGAWA K,et al. Study on the flow stability and dynamic characteristics of a water bearing[J]. IET Conference Publications,2014,2014:1-8.
[10] 杨金福,杨昆,于达仁,等. 滑动轴承非线性动态油膜压力分布特性的研究[J]. 动力工程,2005,25(3):448-453. YANG Jinfu,YANG Kun,YU Daren,et al. Nonlinear dynamic oil film pressure distribution of sliding bearings[J]. Journal of Chinese Society of Power Engineering,2005,25(3):448-453.
[11] 陶金峰. 水润滑轴承润滑特性研究[D]. 武汉:华中科技大学,2018. TAO Jinfeng. Study on the lubrication characteristics of water-lubricated bearing[D]. Wuhan:Huazhong University of Science and Technology,2018.
[12] WANG R Y,LIU Z L,JIN Y. Research on lubrication properties of water-lubricated rubber bearing based on fluid structure interaction[J]. Applied Mechanics and Materials,2011,79:159-165.
[13] ZHOU G,WANG J,HAN Y,et al. An experimental study on film pressure circumferential distribution of water lubricated rubber bearings with multiple grooves[J]. Tribology Transactions,2016,60:385-391.
[14] XIANG L,HU A,HOU L,et al. Nonlinear coupled dynamics of an asymmetric double-disc rotor-bearing system under rub-impact and oil-film forces[J]. Applied Mathematical Modelling,2016,40(7-8):4505-4523.
[15] 周广武. 水润滑橡胶合金轴承混合润滑分析与动力学性能优化[D]. 重庆:重庆大学,2013. ZHOU Guangwu. Mixed lubrication analysis and dynamic performance optimization of water lubricated rubber alloy bearings[D]. Chongqing:Chongqing University,2013.
[16] LIU A,HUA J. Study on the dynamic lubrication characteris-tics of water lubricated rubber bearing[J]. Advanced Materials Research,2012,490-495:3707-3711.

立式主泵水膜涡动故障诊断及机理分析

Fault Diagnosis and Mechanism Study of Water-film Whirl in Vertical Reactor Coolant Pumps

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价

[1]	朱少禹, 张向军, 孙军, 王大刚. 粗糙表面轴承微极流体润滑的平均流量模型[J]. 机械工程学报, 2024, 60(7): 203-211.
[2]	狄子钧, 袁东风, 李东阳, 梁道君, 周晓天, 信苗苗, 曹凤, 雷腾飞. 基于多尺度-高效通道注意力网络的刀具故障诊断方法[J]. 机械工程学报, 2024, 60(6): 82-90.
[3]	严如强, 许文纲, 王志颖, 朱启翔, 周峥, 赵志斌, 孙闯, 王诗彬, 陈雪峰, 张军辉, 徐兵. 航空发动机燃油控制系统故障诊断技术研究进展与挑战[J]. 机械工程学报, 2024, 60(4): 3-31.
[4]	张军辉, 刘施镐, 徐兵, 黄伟迪, 吕飞, 黄晓琛. 轴向柱塞泵智能化关键技术研究进展及发展趋势[J]. 机械工程学报, 2024, 60(4): 32-49.
[5]	丁孺琦, 熊文杰, 程敏, 徐兵. 智能化阀口独立电液控制系统安全性能评估[J]. 机械工程学报, 2024, 60(4): 101-112.
[6]	王志颖, 李天福, 许文纲, 孙闯, 张军辉, 徐兵, 严如强. 降噪混合注意力变分自编码器及其在轴向柱塞泵故障诊断中的应用[J]. 机械工程学报, 2024, 60(4): 167-177.
[7]	邵海东, 林健, 闵志闪, 明宇航. 分布外样本干扰下基于改进半监督原型网络的齿轮箱跨域故障诊断[J]. 机械工程学报, 2024, 60(4): 212-221.
[8]	潘海洋, 徐海锋, 郑近德, 童靳于, 张飞斌. 基于双加权不平衡矩阵分类器的机械故障诊断方法[J]. 机械工程学报, 2024, 60(3): 170-180.
[9]	赵轲, 叶敏, 王瑞欣, 陆海, 刘孟孟, 邵海东. 基于模糊域自适应的源自由域旋转机械故障诊断方法[J]. 机械工程学报, 2024, 60(18): 43-52.
[10]	李志鹏, 马天雨, 刘金平, 向青松, 唐俊杰. 基于非对称性对抗训练的多源域自适应智能故障诊断方法[J]. 机械工程学报, 2024, 60(18): 76-88.
[11]	汪煜坤, 易彩, 汪浩, 周秋阳, 冉乐, 王靖元. PSD引导的自适应频带划分方法及其在轴承故障诊断中的应用[J]. 机械工程学报, 2024, 60(17): 179-193.
[12]	刘一龙, 李心远, 陈银萍, 成玮, 陈雪峰. 基于峭度曲面极大值的电机轴承保持架故障诊断方法[J]. 机械工程学报, 2024, 60(15): 89-99.
[13]	于小洛, 杨阳, 杜明刚, 何清波, 彭志科. 机械传动系统含偏差频率分量协同检测与分解方法[J]. 机械工程学报, 2024, 60(15): 100-112.
[14]	黄包裕, 张永祥. 一种基于三步法的轴承故障诊断方法[J]. 机械工程学报, 2024, 60(14): 51-68.
[15]	童哲铭, 马廷良, 刘浩. 基于高速图像特征提取的滑动轴承空化特性试验研究及其数值仿真分析[J]. 机械工程学报, 2024, 60(13): 48-55.