Chinese Journal of Mechanical Engineering >

2021 , Vol. 34 >Issue 6: 105 - 105

DOI: https://doi.org/10.1186/s10033-021-00624-w

Original Article

Raising the Speed Limit of Axial Piston Pumps by Optimizing the Suction Duct

  • Yu Fang ,
  • Junhui Zhang ,
  • Bing Xu ,
  • Zebing Mao ,
  • Changming Li ,
  • Changsheng Huang ,
  • Fei Lyu ,
  • Zhimin Guo
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  • 1 State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou, 310027, China;
    2 Department of Engineering Science and Mechanics, Shibaura Institute of Technology, Tokyo, Japan;
    3 Hangzhou Optimax Tech Co.,Ltd, Hangzhou, China;
    4 Linde Hydraulics (China) Co., Ltd, Weifang, 261000, China
Yu Fang, born in 1999, is currently a master candidate at State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, China. He received his bachelor’s degree from Central South University, China, in 2020. His research interests include the cavitation and vibro-acoustics of axial piston pumps;
Junhui Zhang, born in 1983, is currently a professor at State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, China. His main research interests are fluid power transmission and control, and noise control of axial piston machines;
Bing Xu, born in 1971, is currently a professor and a Ph.D. candidate supervisor at State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, China. His main research interests are fluid power transmission and control, and noise control of axial piston machines;
Zebing Mao, is currently an assistant professor at Department of Engineering Science and Mechanics, Shibaura Institute of Technology, Japan;
Changming Li, born in 1974, is currently an engineer at Hangzhou Optimax Tech Co., Ltd., China;
Changsheng Huang, born in 1996, is currently a master candidate at State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, China;
Fei Lyu, born in 1996, is currently a Ph.D. candidate at State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, China;
Zhimin Guo, is currently an engineer at Hydraulic Transmission Institute, Linde Hydraulic, China. His main research interests are hydraulic pumps, motors and valves development

收稿日期: 2021-04-05

  修回日期: 2021-07-16

  网络出版日期: 2022-04-03

基金资助

Supported by National Key R&D Program of China (Grant No. 2019YFB2004504).

收起

Raising the Speed Limit of Axial Piston Pumps by Optimizing the Suction Duct

  • Yu Fang ,
  • Junhui Zhang ,
  • Bing Xu ,
  • Zebing Mao ,
  • Changming Li ,
  • Changsheng Huang ,
  • Fei Lyu ,
  • Zhimin Guo
Expand
  • 1 State Key Laboratory of Fluid Power and Mechatronic Systems, Zhejiang University, Hangzhou, 310027, China;
    2 Department of Engineering Science and Mechanics, Shibaura Institute of Technology, Tokyo, Japan;
    3 Hangzhou Optimax Tech Co.,Ltd, Hangzhou, China;
    4 Linde Hydraulics (China) Co., Ltd, Weifang, 261000, China

Received date: 2021-04-05

  Revised date: 2021-07-16

  Online published: 2022-04-03

Supported by

Supported by National Key R&D Program of China (Grant No. 2019YFB2004504).

Fold

摘要

The maximum delivery pressure and the maximum rotational speed determine the power density of axial piston pumps. However, increasing the speed beyond the limit always accompanies cavitation, leading to the decrease of the volumetric efficiency. The pressure loss in the suction duct is considered a significant reason for the cavitation. Therefore, this paper proposes a methodology to optimize the shape of the suction duct aiming at reducing the intensity of cavitation and increasing the speed limit. At first, a computational fluid dynamics (CFD) model based on the full cavitation model (FCM) is developed to simulate the fluid field of the axial piston pump and a test rig is set to validate the model. Then the topology optimization is conducted for obtaining the minimum pressure loss in the suction duct. Comparing the original suction duct with the optimized one in the simulation model, the pressure loss in the suction duct gets considerable reduction, which eases the cavitation intensity a lot. The simulation results prove that the speed limit can increase under several different inlet pressures.

关键词： Axial piston pump; Speed limit; Topology optimization; Suction duct; Cavitation

本文引用格式

Yu Fang , Junhui Zhang , Bing Xu , Zebing Mao , Changming Li , Changsheng Huang , Fei Lyu , Zhimin Guo . Raising the Speed Limit of Axial Piston Pumps by Optimizing the Suction Duct[J]. Chinese Journal of Mechanical Engineering, 2021 , 34(6) : 105 -105 . DOI: 10.1186/s10033-021-00624-w

Abstract

The maximum delivery pressure and the maximum rotational speed determine the power density of axial piston pumps. However, increasing the speed beyond the limit always accompanies cavitation, leading to the decrease of the volumetric efficiency. The pressure loss in the suction duct is considered a significant reason for the cavitation. Therefore, this paper proposes a methodology to optimize the shape of the suction duct aiming at reducing the intensity of cavitation and increasing the speed limit. At first, a computational fluid dynamics (CFD) model based on the full cavitation model (FCM) is developed to simulate the fluid field of the axial piston pump and a test rig is set to validate the model. Then the topology optimization is conducted for obtaining the minimum pressure loss in the suction duct. Comparing the original suction duct with the optimized one in the simulation model, the pressure loss in the suction duct gets considerable reduction, which eases the cavitation intensity a lot. The simulation results prove that the speed limit can increase under several different inlet pressures.

Key words： Axial piston pump; Speed limit; Topology optimization; Suction duct; Cavitation

参考文献

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