摘要
针对某堆型核电机组主泵水润滑推力轴承极端工况及超长服役周期的特点,从分析和试验两个方面进行了摩擦学的相关研究工作。在分析方面,考虑了平衡支撑下的润滑性能分析,仿真分析了推力轴承在不同转速下的最小润滑膜厚度h_(min)、摩擦力矩M_(f)和温升ΔT,并根据起飞转速建立了基于启停次数的轴承磨损预测模型;在试验方面,进行了与轴承材料相关的摩擦磨损试验,获得了石墨-不锈钢摩擦副在边界润滑和干摩擦下的摩擦因数f和体积磨损量ΔW,通过缩比的台架试验测试了石墨轴承的润滑膜厚度h、瓦面温度T及磨损质量Δm。结果表明:工作转速对h_(min)影响较大,对ΔT影响较小,石墨材料对干摩擦下的f和ΔW影响较大;从h和T来看,试验结果与计算分析的结果较为接近,说明半尺寸缩比试验与实际使用工况相似性较佳。
According to the characteristics of extreme working conditions and long service life of the water-lubricated thrust bearing in the main pump of a nuclear power plant unit,the tribology research was carried out from two aspects of analysis and experiment.In terms of analytics,considering the lubrication performance analysis under balanced support,the minimum lubrication film thickness(h_(min)),friction torque(M_(f))and temperature rise(ΔT)of thrust bearing at different rotational speeds were simulated and analyzed,and the bearing wear prediction model based on the numbers of start and stop was established according to the take-off speed.In terms of test,the friction and wear tests related to bearing materials were carried out,and the friction coefficient(f)and volume wear(ΔW)of graphite-stainless steel friction pair under the conditions of boundary lubrication and dry friction were obtained.The lubrication film thickness(h),temperature on the tile surface(T)and wear mass(Δm)of graphite bearing were tested by scaled bench test.Results show that the working speed has a greater impact on h_(min)and a smaller impact onΔT.The graphite material has a greater impact on f andΔW under the condition of dry friction.From the perspective of h and T,the test results are close to the theoretical calculation results,indicating that the semi-scale scaling test has a better similarity with the actual working conditions.
作者
贾谦
杨帅
刘哲
李思晗
蔡龙
韩海燕
闫菲菲
袁小阳
JIA Qian;YANG Shuai;LIU Zhe;LI Sihan;CAI Long;HAN Haiyan;YAN Feifei;YUAN Xiaoyang(Department of Mechanical Engineering,Xi'an Jiaotong University City College,Xi'an 710018,China;Engineering Research Center of Robot and Intelligent Manufacturing,Universities of Shaanxi Province,Xi'an Jiaotong University City College,Xi'an 710018,China;School of Mechanical and Precision Instrument Engineering,Xi'an University of Technology,Xi'an 710048,China;Engineering Research Center of RCP of Heilongjiang Province,Harbin 150060,China;Theory of Lubrication and Bearing Institute,Xi'an Jiaotong University,Xi'an 710049,China)
出处
《动力工程学报》
CAS
CSCD
北大核心
2023年第5期535-542,共8页
Journal of Chinese Society of Power Engineering
基金
科技部创新方法工作专项资助项目(2019MO10203)
西安交通大学城市学院校级资助项目(2020Y12)。
关键词
核电厂主泵
水润滑推力轴承
摩擦学性能
仿真分析
试验测试
main pump of the nuclear power plant
water-lubricated thrust bearing
tribological properties
simulation analysis
test
作者简介
贾谦(1981-),男,回族,陕西西安人,讲师,博士,研究方向为现代机械设计、现代测试技术。电话(Tel.):13201677073,E-mail:qianjia@mail.xjtu.edu.cn。
