液压与气动2025，Vol.49Issue(6)：1-8,8.DOI:10.11832/j.issn.1000-4858.2025.06.001
油口串联式双输出动力源输出流量与能效特性仿真研究
Simulation Study on Flow and Energy Efficiency Characteristics of Tandem Dual-output Hydraulic Pump Power Source
摘要
Abstract
To address the challenge in the domestic substitution of high-pressure hydraulic pumps,this paper proposes a tandem dual-output hydraulic pump power source.By connecting a secondary pump in series to the outlet of the primary pump,the system achieves stage-by-stage pressurization,fulfilling high-pressure requirements without modifying low-performance pumps.The tandem structure significantly reduces the pressure difference across single pumps,extends their service life,and isolates load impacts through accumulators.SimulationX-based analyses on flow pulsation and energy efficiency performance reveal the following results:Under conditions of 20 MPa and 1500 r/min,the flow pulsation rate is reduced by 37％compared to single-stage gear pumps.The system energy efficiency for driving high and low-pressure load hydraulic cylinders reaches 61％when adopting the proposed tandem power source,substantial improvement over the 36％efficiency of a single-stage variable displacement axial piston pump.These findings provide innovative insights for the design of power sources in complex high-pressure hydraulic systems.关键词
双液压泵油口串联/流量脉动/能效优化/高压液压系统Key words
tandem dual hydraulic pumps/flow pulsation/energy efficiency optimization/high-pressure hydraulic systems分类
机械工程引用本文复制引用
潘之杰,武瀚文,耿怀德,解松涛,权龙..油口串联式双输出动力源输出流量与能效特性仿真研究[J].液压与气动,2025,49(6):1-8,8.基金项目
国家重点研发计划项目(2023YFB3406601) （2023YFB3406601）
