外啮合齿轮泵卸荷槽的优化设计  

Optimization Design of Relief Groove of External Gear Pump

作　　者：王永林 李纬良 丁志坚 刘永帅 WANG Yonglin;LI Weiliang;DING Zhijian;LIU Yongshuai(Shanghai Marine Equipment Research Institute,Shanghai 200031,China)

机构地区：[1]上海船舶设备研究所,上海200031

出　　处：《机电设备》2025年第1期63-67,75,共6页Mechanical and Electrical Equipment

摘　　要：为解决外啮合齿轮泵泵体内的困油问题,提出优化泵体结构的不同方式,即在泵体内部添加不同形状和不同布置方式的卸荷槽。采用计算流体动力学(CFD)软件对不同优化方案进行计算,对比外啮合齿轮泵泵体添加圆形与矩形卸荷槽时,单侧与双侧卸荷槽后泵腔内的压力波动和流量的变化情况。综合工程实际情况,得到泵体上结构最优的卸荷槽布置方式。为得到最优几何尺寸的卸荷槽方案,对添加不同宽度、深度和不同位置卸荷槽后的泵腔压力波动和流量变化情况进行对比分析,得到最优的卸荷槽几何尺寸。In order to solve the problem of oil trapped in the external gear pump,different ways of optimizing structure of the pump housing are put forward,that is,adding different shape and arrangement relief grooves in the pump housing.The different optimization is calculated by computational fluid dynamics(CFD)software,and the pressure and flow fluctuation change of pump body after adding circular and rectangular relief groove is compared.Based on the actual engineering situation,the optimal unloading groove arrangement on the pump body is obtained.In order to obtain the optimal geometry of the unloading groove scheme,the pressure fluctuation and flow variation of the pump chamber after adding different widths,depths and positions of the unloading groove are compared and analyzed,and the optimal unloading groove geometry is obtained.

关 键 词：困油 卸荷槽 压力波动 齿轮泵 

分 类 号：TH137.51[机械工程—机械制造及自动化]