摘要
为减小配流冲击、降低噪声,高压柱塞泵的柱塞腔在吸排油转换的过程中必须通过机械闭死压缩、膨胀和减振槽引油共同作用来实现预升压和预卸压。这一过程中,减振槽的两端均作用较大的变化的压差,槽中的油液产生较大速度的压差流,导致低压区的出现,形成气穴,气泡再破裂时产生气蚀,破坏配流盘和缸体表面。通过优化减振槽的参数和结构,减小气穴的体积含量和改变气穴出现的位置,让气泡远离配流盘和缸体的表面破裂,是控制高压柱塞泵气蚀破坏的有效方法。
In order to reduce water-hammer and noise in absorbing and discharging process of the high-pressure piston pump,the pre-loading process and pre-unloading process are realized through the combined action of mechanical closure compression,expansion and the fluid guided in the silencing grooves in transition regions of absorbing process and discharging process.In this process,the emergence of the low-pressure area and forming air cavitation are generated by a large differential change pressure in the silencing grooves and a large differential pressure fluctuation at a high speed in the oil of the silencing grooves,and when the bubbles break up again,occurance of cavitation erosion damages the valve plate and cylinder surface.It is an effective method to control cavitation damage of high-pressure piston pump by optimizing the parameters and structure of the silencing grooves,reducing the volume content of cavitation,changing the location of cavitation and making the bubble break away from the valve plate and the surface of cylinder.
作者
齐国宁
田婷
何增强
王小亮
岳崧
段士伟
王峥嵘
QI Guoning;TIAN Ting;HE Zengqiang;WANG Xiaoliang;YUE Song;DUAN Shiwei;WANG Zhengrong(AVIC Xi’an Aero-engine Controls Technology Co.,Ltd.,Xi’an Shaanxi 700077,China;Lanzhou University of Technology,Lanzhou Gansu 730050,China)
出处
《机床与液压》
北大核心
2021年第9期187-191,共5页
Machine Tool & Hydraulics
关键词
高压柱塞泵
气穴
气蚀
High-pressure piston pump
Cavitus
Cavitation
