Abstract：With respect to the problems of piston and filler seal life of special piston pump transporting medium with particles,considering from tribological mechanism of the contact reciprocating seal,the linear velocity of plunger was reasonably controlled to reduce the friction velocity and optimally design the seal of piston and filler through optimal matching of the plunger diameter,the stroke,and the pump speed.By solving the laminar flow in the gap and controlling the pressure of flushing fluid it was guaranteed that in full-pressure seal system,the fluid film of contact zone was working under the mixing lubrication state with a good lubrication.Two packing seal schemes were designed,matched and tested with plunger of different surface treatments and different kinds of filler.It is shown that after accumulating running 4 455 h the wear loss of combination 1 and combination 2 are only 0.03 mm and 0.05 mm,repectively.In practical use,the improved seal design can enhance the life of piston and filler from 1 500 h to more than 4 500 h.
叶晓琰， 丁亚娜， 许建强， 张军辉. 提高特殊柱塞泵往复密封寿命的优化设计[J]. 排灌机械工程学报, 2009, 27(6): 373-378.
Ye Xiaoyan,Ding Yana,Xu Jianqiang,Zhang Junhui. Research on improvement of reciprocating seal life of special piston pump. Journal of Drainage and Irrigation Machinery Engin, 2009, 27(6): 373-378.
[1]李安虎,李红.泵用O型密封圈的设计[J].排灌机械,2003,21(2):29-32.Li Anhu,Li Hong.Design of O-ring packing for pump[J].Drainage and Irrigation Machinery,2003,21(2):29-32.(in Chinese)[2]张毅平.填料密封渗漏问题分析[J].油气储运,2004,23(8):53-55.Zhang Yiping.Analysis on leakage of pump packing seal[J].Oil & Gas Storage and Transportation,2004,23(8):53-55.(in Chinese)[3]施卫东,蒋小平,许建强,等.往复泵曲轴设计应用程序开发及应用[J].江苏大学学报:自然科学版,2009,30(3):280-283.Shi Weidong,Jiang Xiaoping,Xu Jianqiang,et al.Development and application of design program for crankshaft of reciprocating pumps[J].Journal of Jiangsu University:Natural Science Edition,2009,30(3):280-283.(in Chinese)[4]《往复泵设计》编写组.往复泵设计[M].北京:机械工业出版社,1987.[5]Sandor B B.Design development and tribology of reciprocating hydraulic seals[J].Periodica Polytechnica,Mechanical Engineering,2004,48(2):163-178.[6]杨继隆,俞浙青,裴翔,等.液压往复密封的技术进展[J].中国机械工程,2001,12(7):842-846.Yang Jilong,Yu Zheqing,Pei Xiang,et a1.The evolution study of hydrodynamic reciprocating sealing[J].China Mechanical Engineering,2001,12(7):842-846.(in Chinese)[7]Blok H.Inverse problems in hydrodynamic lubrication and design directives for lubricated flexible surfaces[C]∥Muster D,Sternlicht B.Proceedings International Symposium on Lubrication and Wear.Berkeley:McCutchan Publishing,1963:66.[8]Karaszkiewicz A.Hydrodynamics of bubber Sealsfor reciprocating motion[J].Power International,1987,33(389):169-172.[9]余祖耀,李壮云,聂松林,等.水液压柱塞泵陶瓷柱塞的可靠性设计[J].机械设计,2003,20(4):12-13.Yu Zuyao,Li Zhuangyun,Nie Songlin,et al.Design on the reliability of ceramic plunger in water hydraulic plunger pump[J].Journal of Machine Design,2003,20(4):12-13.(in Chinese)[10]国家标准局.GB/T 7784-2006 机动往复泵试验方法[S].北京:中国标准出版社,2006.
