全空化模型齿轮泵进口腔分析  

Inlet chamber analysis of external gear pump based on full cavitation theory

作　　者：王安麟[1] 单学文[1] 刘巍[1] 张小路[1] 

机构地区：[1]同济大学机械与能源工程学院,上海201804

出　　处：《机械设计》2013年第9期33-36,89,共5页Journal of Machine Design

摘　　要：针对大转速齿轮泵进口腔空化程度严重问题,运用全空化理论,分析不同转速等级对进口腔油液流动稳定性、泵吸油能力影响。以CBAK型齿轮泵为例,建立齿轮泵及侧板槽内的流体动力学模型,运用CFD(Computational Fluid Dynamics)技术及全空化理论,可视化地对不同转速等级下齿轮泵进口腔流体空化的瞬时状态进行数值模拟。结果表明进口腔空化形态有利于进口腔的流动稳定性,但却大大降低了泵的吸油能力。This paper deals with cavitation trend and its effect on inlet chamber flow stability and suction ability of external gear pump with the full cavitation theory,which is under different shaft speed.With the help of full cavitation theory,a typical CBAK gear pump CFD model has been established to visually study the instantaneous cavitation trend with different shaft speed and its effect on flow stability at inlet chamber,and suction ability of gear pump.Result indicates that cavitation trend is conducive to flow stability,but greatly degrades the suction ability of gear pump.

关 键 词：齿轮泵 全空化理论 计算流体力学 流动稳定性 吸油能力 

分 类 号：TH137.51[机械工程—机械制造及自动化]