Design And Flow Coupling Characteristics Of Double Row Quantitative Vane Pump

Double acting vane pump is widely used in the mechanical field because of its stable operation and small flow pulsation.It is an important power component in the hydraulic system.However,with the development of hydraulic equipment towards high pressure and high speed,high pressure and large flow pumps account for an increasing proportion in practical engineering applications.In order to increase the flow output of double acting vane pump and ensure its good flow pulsation,the double row quantitative vane pump proposed and designed in this paper can effectively deal with this problem.The flow pulsation of double row quantitative vane pump is analyzed and studied through threedimensional modeling,theoretical analysis,simulation test verification and orthogonal analysis.The main research contents are as follows:Firstly,the main structural parameters of the double row quantitative vane pump are designed and checked,and the structural parameters that may affect the flow pulsation of the pump body,such as the number of blades,the installation inclination of blades,the transition curve of the inner surface curve of the stator and the included angle of the center lines of the two stators,are theoretically analyzed.The three-dimensional model of the double row vane pump is established by using SolidWorks three-dimensional modeling software,The fluid domain of the three-dimensional model is extracted by ANSYS software.With the help of pumplinx pump valve simulation software,the hexahedral grid is divided after surface cutting and angular cutting of the convective domain model,and the simulation calculation is carried out after setting the boundary conditions to obtain the outlet flow image.Then through the simulation calculation of the transition curve of the inner surface of the stator,the matching angle of the two stators,the number of blades and the installation angle of the blades,as well as the approximate analysis of the instantaneous flow image at the outlet,it is concluded that the number of blades is 16,the matching angle of the two stators is 30 degrees and the installation angle of the blades is 16 degrees,When the stator transition curve is a cubic curve,the flow pulsation rate at the outlet of the double row vane pump is the smallest and the stability of the pump body is the best.Finally,the orthogonal test is designed.Through range analysis,the four factors and their different levels,such as the transition curve of the inner surface of the stator,the matching angle of the two stators,the number of blades and the installation angle of the blades,are studied,and the primary and secondary order of the influence of the four factors on the flow pulsation is obtained;Then,through the analysis of variance,the significance of the four factors is studied and analyzed to obtain whether the influence of the factors on the flow pulsation of the pump body is significant,and it is concluded that the optimal factor level combination is 14 blades,13 degree blade installation angle,the sixth curve as the transition curve,and the matching angle of the two stators of 30 degrees,The order of the significance of the factors from large to small is the matching angle of the two stators,the transition curve of the inner surface of the stator,the number of blades and the installation angle of the blades.Figxxre [42] table [11] reference [80]...