液压与气动2026，Vol.50Issue(8)：1-8,8.DOI:10.11832/j.issn.1000-4858.2026.08.001
高能效电液系统用高速柱塞泵关键技术研究
Research on Key Technologies of High-speed Piston Pumps for High-efficiency Electro-hydraulic Systems
摘要
Abstract
With the widespread application of high-speed motors,electro-hydrostatic actuator impose high-speed requirements on piston pumps.We focus on a 60 ml/r swashplate variable-displacement axial piston pump and conduct a high-speed redesign.We address issues such as large pressure pulsations in the piston chambers,poor suction performance,and severe cavitation at high rotational speeds.An integrated booster impeller is designed inside the pump to increase the suction pressure of the piston chambers and to solve the insufficient oil intake problem.A pre-depressurization chamber is added to reduce negative pressure overshoot during high-to-low pressure transitions thereby mitigating cavitation risks.The port plate relief grooves are optimized by configuring the pressurization zone with damping holes and triangular grooves and the depressurization zone with damping holes and U-shaped grooves.The optimization of the port plate damping grooves reduces pressure pulsation during pressure transitions.The proposed design is validated through CFD flow-field simulations.A prototype of the high-speed piston pump is developed and experimentally tested.Testing results show good agreement with the simulation results.The prototype reaches a maximum rotational speed of 5000 r/min,and its volumetric efficiency exceeds 96%under load pressures of 5～15 MPa within the speed range of 1000～5000 r/min.关键词
电静液作动器/高速柱塞泵/配流盘/增压叶轮/预卸压容腔/CFD仿真Key words
electro-hydrostatic actuator/high-speed piston pump/port plate/booster impeller/pre-depressurization chamber/CFD simulation分类
机械制造引用本文复制引用
谢海波,莫祖思,王承震,徐思洋,周嘉庆..高能效电液系统用高速柱塞泵关键技术研究[J].液压与气动,2026,50(8):1-8,8.基金项目
国家重点研发计划(2023YFB3406602) （2023YFB3406602）
国家自然科学基金项目(U25A20294,U25A20291) （U25A20294,U25A20291）
