恒流量泵凸轮接触应力计算  

Contact stress calculation for cam couple of constant-flow pump

作　　者：宋林松[1] 陈国明[2] 李宗清[1] 王复东[1] 

机构地区：[1]胜利石油管理局钻井工艺研究院,山东东营257017 [2]石油大学机电系,山东东营257062

出　　处：《机械》2002年第2期19-21,共3页Machinery

摘　　要：根据恒流量往复泵柱塞运动规律的要求 ,推导、计算了恒流量泵凸轮的廓线、压力角、展角等重要参数 ;考察了用有限单元法计算凸轮接触应力的可行性 ,并计算凸轮曲率突变点的应力 ,解决了常规算法计算不了的问题。计算表明 :凸轮曲线曲率突变造成接触应力增大 ,使凸轮整体寿命降低 4 2 %以上 。Cam pump is a kind of new constant flow reciprocating pump.According to the requirement for plungers motion,this paper derives outline and some other important parameters of the cam.After investigating the feasibility and accuracy of cam couples contact stress calculation with FEM,this paper computes stress on cams curvature mutation points,which is unsolvable for conventional methods.The above said computation indicates that the curvature mutation of cam curve enhances contact stress of cam couples,and thus shortens the lifetime of the whole cam by more than 42 percent.

关 键 词：恒流量泵 凸轮 接触应力 有限元法 三次采油 往复泵 

分 类 号：TE934[石油与天然气工程—石油机械设备] TH321[机械工程—机械制造及自动化]