往复泵柱塞定期维修周期及失效模式研究  

Research on Regular Maintenance Cycle and Failure Mode for Plunger of the Reciprocating Plunger Pump

作　　者：裴峻峰[1] 邓守层 姜海一[2] 郑庆元[1] 

机构地区：[1]常州大学机械工程学院,江苏常州213016 [2]中国特种设备检测研究院,北京100013

出　　处：《机械设计与制造》2016年第2期195-198,202,共5页Machinery Design & Manufacture

基　　金：国家自然科学基金(51175051);中国石油化工股份有限公司镇海炼化分公司技术开发项目(K-13-I02)

摘　　要：应用RCM技术对往复式柱塞泵中柱塞的寿命分布类型及可靠性规律进行研究。整理某炼化企业往复泵的维修记录,统计出柱塞的有效运行时间作为柱塞寿命,通过K-S检验方法进行拟合优度检验,确定柱塞的寿命服从威布尔分布,并且利用两参数威布尔分布得出柱塞寿命概率密度函数、可靠性趋势及失效率函数。结果表明:柱塞的平均寿命为5733h,柱塞的更换时间大多集中于3700h;在可靠度为95%时,柱塞的定期维修周期为1069h;引起柱塞失效的主要原因是磨损和拉毛。Applying RCM technology to research the life distribution type and reliability rule of plunger of the reciprocating plunger pump.Sorting out the effective running time of plunger as its life from the maintenance records of reciprocating pump in a refinery,using K-S test method to test its goodness of fit and then proving that the plunger＇s life obeying the Weibull distribution. Using the two parameter Weibull distribution to drive probability density function of life,reliability trend and failure rate function of the plunger.The results show that the MTTF of the plunger is 5733 h,and time to change plunger is mostly concentrated around 3700 h. The regular maintenance cycle of plunger is 1069 h under the reliability of 95%. Wear and galling are the major causes that causing plunger failure.

关 键 词：往复泵 柱塞 寿命分布 威布尔 定期维修周期 失效模式 

分 类 号：TH16[机械工程—机械制造及自动化]