中国机械工程 ›› 2025, Vol. 36 ›› Issue (11): 2633-2640.DOI: 10.3969/j.issn.1004-132X.2025.11.019

• 机械基础工程 • 上一篇    

变排量对置柱塞泵流通特性研究

杨伟1(), 贾晨2, 何超3, 樊文欣2, 樊志强4, 李正禄3   

  1. 1.中北大学能源与动力工程学院, 太原, 030051
    2.中北大学机械工程学院, 太原, 030051
    3.重庆航天火箭电子技术有限公司, 重庆, 400039
    4.北京航天发射技术研究所, 北京, 100076
  • 收稿日期:2025-03-20 出版日期:2025-11-25 发布日期:2025-12-09
  • 通讯作者: 杨伟
  • 作者简介:杨 伟*(通信作者),男,1985年生,讲师。研究方向为新型动力系统开发、新能源燃料设计及液滴动力学。发表论文14篇。E-mail:yangwei2184@nuc.edu.cn
    第一联系人:严天祥,男,1987年生,正高级实验师。研究方向为压电材料与器件。发表论文20余篇。E-mail:yangtxboy@163.com。蒋海燕*(通信作者),女,1986年生,副主任护师。研究方向为神经外科护理及重症护理。E-mail: 461210227@qq.com
  • 基金资助:
    山西省基础研究计划(202203021222045)

Study on Flow Characteristics of Variable Displacement Opposed Piston Pumps

Wei YANG1(), Chen JIA2, Chao HE3, Wenxin FAN2, Zhiqiang FAN4, Zhenglu LI3   

  1. 1.School of Energy and Power Engineering,North University of China,Taiyuan,030051
    2.School of Mechanical Engineering,North University of China,Taiyuan,030051
    3.Chongqing Aerospace Rocket Electronic Technology Co. ,Ltd. ,Chongqing,400039
    4.Beijing Institute of Space Launch Technology,Beijing,100076
  • Received:2025-03-20 Online:2025-11-25 Published:2025-12-09
  • Contact: Wei YANG

摘要:

针对工程机械中定量泵功率损失大的问题,设计了一种变排量对置柱塞泵。采用等效建模方法建立了该泵的AMESim仿真模型,采用台架试验验证了模型的有效性。试验结果表明:平均流量的仿真值和试验值的最大误差为9.30%,考虑到泄漏和泵阀回流的因素,该误差在合理范围内。基于该仿真模型研究了变排量对置柱塞泵在变转速、变相位及其交互作用下的流通性能。仿真结果表明:泵的流量和压力会随着转速的增加而增加,随相位差的增大而减小。额定转速下,相位差从0°增加到150°时,平均流量降低了74.00%,最大瞬时压力减小了88.87%,这表明该泵的流量、压力调节范围较大。该泵通过调节转速和相位差可实现输出流量的连续变化,为变排量泵控制打下研究基础。

关键词: 对置柱塞泵, 变排量, 变相位, 流通特性

Abstract:

To address the high power loss in fixed-displacement pumps used in construction machinery, a variable-displacement opposed-piston pump was designed. The pump's AMESim simulation model was developed through equivalent modeling methodology. The model validity was experimentally verified through comprehensive bench testing. Experimental validation reveals a maximum 9.30% deviation between simulated and measured average flow rates, within acceptable limits when accounting for leakage and valve backflow effects. Using this validated simulation model, the flow characteristics of the variable displacement opposed piston pumps was investigated under varying rotational speeds, phase differences, and their coupled effects. The simulation results show that the pump flow and pressure increase with increasing speed and decrease with increasing phase difference. When the phase difference increases from 0° to 150° at rated speed, the average flow rate decreases by 74.00%, the maximum instantaneous pressure droppes by 88.87%. These results demonstrate that the pumps have a wide range of flow, pressure adjustment. The pumps enable continuous output flow regulation through coordinated speed and phase difference adjustment, establishing a theoretical foundation for variable displacement pump control strategies.

Key words: opposed piston pump, variable displacement, variable phase, flow characteristic

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