两态式节能叶片泵研究

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英文篇名：STUDY ON TWO STATE ENERGY-SAVING VANE PUMP 作者：翟建华 ; 李艺凡 ; 魏晓华 英文作者：ZHAI JianHua;LI YiFan;WEI XiaoHua;Mechanical Engineering College,Liaoning Technical University;Institute of Advanced Manufacturing Technology,Liaoning Technical University; 关键词：叶片泵 ; 可缩回叶片 ; 泄漏 ; 最佳间隙 ; 热楔油膜 英文关键词：Vane pump;;Retractable blade;;Leakage;;Optimum clearance;;Hot wedge oil film 中文刊名：JXQD 英文刊名：Journal of Mechanical Strength 机构：辽宁工程技术大学机械工程学院;辽宁工程技术大学先进制造技术研究院; 出版日期：2019-01-24 出版单位：机械强度 年：2019 期：v.41;No.201 基金：国家自然科学基金项目(51304107)资助~~ 语种：中文; 页：JXQD201901033 页数：5 CN：01 ISSN：41-1134/TH 分类号：214-218

摘要

设计了一种叶片可缩回式叶片泵。通过子母式叶片泵与插装式液控换向阀的组合,实现叶片泵供油和卸荷两种状态的切换,同时换向阀的阻尼作用为高压区叶片的伸出提供条件。建立单侧轴向间隙泄漏模型,计算泄漏功率损失及油膜剪切功率损失,建立总功率损失与轴向间隙的关系方程式,求得最佳轴向间隙。提出的该型叶片泵卸荷状态下叶片缩回的条件,并基于热楔油膜理论验算了油膜剪切所造成的温升,以及该温升下油膜膨胀对叶片的作用力,验算叶片泵卸荷时叶片缩回条件,得出叶片可缩回的结论。
        In this paper,the design of a blade retractable vane pump was demonstrated. The combination of a vane pump with a plug-in type pilot-operated directional control valve can achieve the shift between the two states of oil supply and unloading of the vane pump. In addition,the damping effect of the directional valve makes it possible for the extension of the vane even in the high pressure portion. The axial clearance model was established to calculate the leakage power loss and the shear loss of the oil film. The relationship between the total power loss and the axial clearance was set up to obtain the optimal axial clearance.Furthermore,the condition of blade retraction under unloaded state was concluded and the temperature increase caused by oil film shear was calculated based on the theory of hot wedge oil film. Force exerted on the blade due to oil film expansion under the increased temperature was also verified. The conclusion of blade retraction condition during unloading of the vane pump enables the potential for future applications and further researches.

引文

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