Modeling And Simulation Of Mechanical Properties Of The Compressible Fluid Working Medium Acting Pumps

Vane pump is used in many fields with many advantages like small size, light weight and discharge even. But the vane pump which was produced at home exits some distance on characteristics when it was contrast to that outside, so the research of flow distribution when compression nature is considered have important meaning for improvement and development of interior vane pump.Taking the type of VQ35 vane within vane type pump as example and aiming at noise generation mechanism to research from two aspects of reducing pressure impaction and ameliorating the forces in vane. When the compression of oil was considered, the model was built for working cavity oil's pressure beforehand rising in export area and pressure beforehand reducing and in inlet area, the variation curve of oil pressure was gained by simulation, and the value of angle of pressure rising and declining in dead area. After the influence of factors such as vane's thickness, mechanical compress and flowing in damping were considered, the variation curve of actual discharge. And the factors of effecting discharge ripple were discussed.The vane pump's dynamics characteristic have important function for vane pump's normally working, conclusion of the state of vane's forces was best when heeling angle of vane is zero was reached by building model and simulation. It was known that the state of arc shape vane's force is better than that vane whose shape is one side and heeling to back by analyzing and contrasting to a few popular shapes of vane, and one side and heeling to back vane whose top is arc can possess the advantages of arc shape vane and one side and heeling to back vane. At last, the general mathematical model of vane's force in one action was obtained by summarizing, and the law of contrast force's variation of vane in high pressure vane within vane type pump was obtained by comparing to common low pressure pump .In the end of the paper, the author summarized of whole content and analyzed the defects which existed in the processing of research for study aftertime.