Influence of air content entrained in fluid on performance in high-pressure vane pump
The noise level and flow ripple are important parameters indicating the performance of highpressure vane pump. This research aims at the influence of air content entrained in fluid on flow ripple and the fluid noise which mainly generate by pressure impact within the transition region in highpressure vane pump. The pressure gradient was adopted to measure the rate of pressure impact, and the maximum of which determine the level of fluid noise. Diminish the Max. Of pressure gradient in transition region through optimize the configuration of silencing grooves is effective measure to reduce fluid noise. Secondly, the backfilling flow from discharge port to chamber through silencing grooves in transition region is the main influential factors of flow ripple in pump. The content of air in fluid is a main influence factor of bulk modulus and the maximum of backfilling flow and the amplitude of the flow ripple. In this paper, the model of pre-loading process in single chamber at considering the effect of air content to the fluid bulk modulus and density is build. The simulation graphs of pressure gradient and discharge flow were gained. Finally, the conclusion that the fluid noise and flow ripple can be reduced through the decline of air content in fluid was obtained.
High-pressure vane pump Fluid noise Air content Pressure gradient Flow ripple
Zhengrong Wang Hong Ji Shaonian Li Chenglie Na
Dept. of Fluid power and control, Lanzhou University of Technology, Lanzhou, China
国际会议
杭州
英文
146-150
2009-04-08（万方平台首次上网日期，不代表论文的发表时间）