三极并联齿轮泵理论分析  

Theoretical analysis of a tri-polar parallel gear pump

作　　者：毛平淮[1] 侯波[1] 

机构地区：[1]安徽理工大学机械工程学院,安徽淮南232001

出　　处：《重庆大学学报（自然科学版）》2008年第10期1123-1127,共5页Journal of Chongqing University

基　　金：国家自然科学基金资助项目(59575010);安徽省淮南市科技基金重点资助项目(2006-07)

摘　　要：针对普通齿轮泵流量品质差、不平衡径向力大和"平衡式复合齿轮泵"结构复杂、泄漏点多,制造、装配精度要求及成本高、难以获得工业应用等的不足,提出了一种具有3个子泵结构的新型并联齿轮泵设计方案。该方案依据设计模型,对其结构原理、功率密度、径向力、流量特性、流量脉动等进行了理论分析。结果表明:该泵具有轴向尺寸小、功率密度高、主动齿轮所受径向力平衡、从动齿轮所受径向力大为减少等特点。适当选取齿数,可使泵的流量脉动显著减小,流量品质提高。Common gear pumps have numerous shortcomings, including poor flow quality, high unbalanced radial force, imbalanced ＂balanced compound gear pumps＂ with complex structure, many leakage points, high manufacturing and assembling precision, high cost, and difficulty using in industrial applications. This paper proposed a new design scheme of a parallel gear pump with three sub-structures. Based on the design model, theoretical analysis of structural principles, power density, radial force, flow characteristics, and flow fluctuating were carried out. The result shows the new pump design has the advantages of small axial size, high power density, the initiative gear balanced the gear radial force, and decreased the radial force of the driven gear. By selecting suitable numbers of teeth, it can reduce flow pulsation effectively and improve flow quality.

关 键 词：齿轮泵 并联 三极 径向力 功率密度 流量脉动 

分 类 号：TH325[机械工程—机械制造及自动化]