中国机械工程 ›› 2026, Vol. 37 ›› Issue (10): 2618-2630.DOI: 10.3969/j.issn.1004-132X.2026.10.025

• 机械基础工程 • 上一篇    下一篇

叶片不等距分布对泵作透平影响的数值计算

张玉良1(), 杨泽洲2, 童江波3, 赵燕娟4, 朱祖超5()   

  1. 1.衢州学院机械工程学院, 衢州, 324000
    2.浙江工业大学机械工程学院, 杭州, 310023
    3.湖南工业大学机械工程学院, 株洲, 412007
    4.衢州职业技术学院信息工程学院, 衢州, 324000
    5.合肥通用机械研究院有限公司, 合肥, 230031
  • 收稿日期:2025-08-19 出版日期:2026-10-25 发布日期:2026-11-10
  • 通讯作者: 朱祖超
  • 作者简介:张玉良,男,1978年生,教授。研究方向为流体机械设计与优化。E-mail: zhang002@sina.com
    朱祖超*(通信作者),男,1966年生,教授、博士研究生导师。研究方向为流体输送与控制技术。E-mail: zhuzuchao@hgmri.com。

Numerical Calculation of the Influences of Uneven Blade Spacing on a PAT

ZHANG Yuliang1(), YANG Zezhou2, TONG Jiangbo3, ZHAO Yanjuan4, ZHU Zuchao5()   

  1. 1.College of Mechanical Engineering,Quzhou University,Quzhou,Zhejiang,324000
    2.College of Mechanical Engineering,Zhejiang University of Technology,Hangzhou,310023
    3.School of Mechanical Engineering,Hunan University of Technology,Zhuzhou,Hunan,412007
    4.College of Information Engineering,Quzhou College of Technology,Quzhou,Zhejiang,324000
    5.Hefei General Machinery Research Institute Co. ,Ltd. ,Hefei,230031
  • Received:2025-08-19 Online:2026-10-25 Published:2026-11-10
  • Contact: ZHU Zuchao

摘要:

在传统轴对称等距叶片基础上设计了两种非轴对称不等距叶片,建立了包含前后腔、口环间隙、平衡孔等在内的全三维计算域,对其进行了结构化网格划分;基于计算流体动力学方法对其进行了内部非定常流动的数值计算;通过性能实验验证了数值计算方法的可靠性。研究发现,非轴对称不等距叶片分布能适当地提高泵作透平的能量回收效率。在中小流量工况下,不等距叶片分布会导致叶轮所受轴向力增大,而在大流量工况下,不等距叶片分布对削减叶轮所受轴向力有一定作用。

关键词: 泵作透平, 叶轮, 不等距叶片, 效率, 轴向力

Abstract:

Two non-axisymmetric uneven blade designs were developed based on traditional axisymmetric equidistant blades. A comprehensive three-dimensional computational domain was constructed, incorporating front/rear chambers, sealing clearances, and balance holes, with structured meshing applied for discretization. Unsteady internal flow simulations were performed using computational fluid dynamics (CFD), with the reliability of the numerical method confirmed by experimental validation. The results demonstrate that non-axisymmetric uneven blade distribution may moderately enhance the energy recovery efficiency of the PAT systems. Under low-to-medium flow conditions, uneven blade spacing increases axial thrust on the impeller, whereas at high flow rates, it exhibits a measurable mitigation effect on axial loading.

Key words: pump as turbine (PAT), impeller, unevenly spaced blade, efficiency, axial thrust

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