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.
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