Low leakage and high volumetric efficiency research of seawater plunger pump

HU Guoqing, LI Shilun, GE Yaozheng, HOU Jiwei, GU Linyi
(State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, China)

Abstract: A plunger pump has shortcomings that large leakage and low volumetric efficiency when the media is seawater. In order to research the capability of low leakage and high volumetric efficiency, optimize the pumps performance, a mathematic model of flat valve in the seawater plunger pump was established. The optimal design formulas about spring stiffness, preload and opening in flat valve were derived, and AMESim was used to establish the model and simulation. The simulation result demonstrates that the leakage is decreased and the volumetric efficiency is increased on the basis of optimal design formulas as mentioned earlier. And it supplies theoretical basis for the design of same type seawater plunger pump and flat valve.
Key words: seawater plunger pump; flat valve; optimization; AMESim