轴向柱塞泵配流盘上阻尼孔对其空蚀特性的影响  

Effect of Damping Hole on Cavitation Erosion of Port Plate of Hydraulical Axial Plunger Pump

作　　者：刘晓红[1] 杨志军[1] 吴文海[2] 

机构地区：[1]西南交通大学现代工业技术培训中心,四川成都610031 [2]西南交通大学新型驱动技术中心,四川成都610031

出　　处：《机床与液压》2010年第15期28-31,共4页Machine Tool & Hydraulics

基　　金：西南交通大学青年教师科研起步资助(2008Q107)

摘　　要：针对轴向柱塞泵配流盘上阻尼孔开设问题,对阻尼孔开设方式不同的3种轴向柱塞泵配流过程进行CFD解析计算,得到配流过程中减压槽附近的最低压力、最大速度和减压槽出口射流角随刚体转角的变化。并得出结论:减压槽出口附近的阻尼孔对减压槽出口的射流角大小(对泵的空蚀特性起关键作用)基本没有影响;要通过改变减压槽出口的射流角大小来减少配流盘的空蚀破坏,就必须改变减压槽出口的结构。Three port plates of axial plunger pump with different damping hole were analyzed by CFD.The relationship curves that minimum pressure and maximum velocity near pressure damping groove,jetting angle of the outlet of pressure damping groove change with rotating angle of cylinder were obtained.The results show that the damping hole near the outlet of pressure damping groove has little effect on the jetting angle of pressure damping groove,which plays a key role on the cavitation erosion on high pressure pump port plate;the structure of the outlet of pressure damping groove has to be changed to reduce cavitation erosion on high pressure pump port plate through changing jetting angle of the outlet of pressure damping groove.

关 键 词：柱塞泵 配流盘 阻尼孔 空蚀 

分 类 号：TP137.51[自动化与计算机技术—控制理论与控制工程]