李玉龙;张丽;王玲娟;范钧;赵海芳;潘海成;
Li Yulong;Zhang Li;Wang Lingjuan;Fan Jun;Zhao Haifang;Pan Haicheng;Suqian College;

• 1:宿迁学院

摘要(Abstract)：

为进一步阐述顶旋泵的轻量化性能及转子的型线构造。基于非接触式转子副间的的共轭原理和泵轻量化要求,依序对转子叶的型线构造、型线方程、参数化模型及其最大形状系数进行研究,并就"闭气现象"给出简化的改造方案。结果表明:顶旋转子的过渡曲线段分布在节圆的两近侧,共轭工作型线段位于两圆侧,具有零流量脉动、小径向泄漏优点;泵轻量化程度取决于转子顶径的最大化,顶径最大化取决于形状系数最大化,所建立的形状系数最大化公式依据叶数及根圆弧强度条件可直接采用;叶数越多,最大形状系数越小,但容积利用系数却越大,后者与常规转子的容积利用系数越小正好相反;所建立的容积利用系数拟合公式可直接采用;过渡曲线的2段简化圆弧,利于消除"闭气现象"和简化加工。
In order to further expound the lightweight performance of epitrochoidal lobe pump and the profile structure of epitrochoidal rotor.Based on the conjugate principle of a non-contact rotor pair and pump lightweight requirements,profile shaped-construction,shaped-profile equation,rotor parametric model and its maximum shape coefficient were studied sequentially,and a simplified shaped-construction for eliminating trapped-gas phenomenon was given.The results show that the transition curve segments of epitrochoidal rotor profile were distributed on both near sides of the pitch circle,and the working conjugate profiles were located on both far sides of the pitch circle,which has the advantage of zero flow pulsation and low radial leakage;The lightweight of epitrochoidal lobe pump depends on the maximization of top circle radius of the rotor,which depends on the maximization of shape coefficient.The established formula for maximization of shape coefficient could be used directly according to the strength condition of root arc and lobe number;The larger the lobe number was,the smaller the maximum shape coefficient would be,but the higher the volume utilization coefficient would be,the latter was opposite to that of conventional rotor,the fitting formula established for volume utilization coefficient can be used directly;The simplification of the two segments of the original transition curve to circular arc was helpful to eliminate trapped-gas phenomenon and simplify the processing.

关键词(KeyWords)： 顶旋泵;轻量化;型线构造;最大形状系数;闭气现象
epitrochoidal pump;lightweight;profile shaped construction;maximum shape coefficient;trapped-gas phenomenon

Abstract:

Keywords:

基金项目(Foundation): 宿迁市千名领军人才集聚计划项目(2019JJ090);; 宿迁市科技计划资助项目(K201924);; 宿迁学院高层次人才资助项目(201805)

作者(Authors): 李玉龙;张丽;王玲娟;范钧;赵海芳;潘海成;
Li Yulong;Zhang Li;Wang Lingjuan;Fan Jun;Zhao Haifang;Pan Haicheng;Suqian College;

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