Optimization of Gear Pair Profiles and Simulation of the Working Process of a Novel Type of Non-trapped Oil Gear Pumps
The gear pair profiles greatly influence the performance of gear pumps.The conventional involute gear pump rotor has the phenomenon of oil trapping,which leads to local high pressure and is very harmful to its operation.Gear pumps were designed to solve the phenomenon of trapped oil through the profile design.A new type of double circular arc-high order curve gear pair was constructed by using circular arc and high order curve,based on the theory of profile meshing,and the trapped oil phenomenon of gear pump was eliminated.Furthermore,a geometric model was established and its profile equation was derived.The flow characteristics of the new non-trapped oil gear pump was studied and compared with the existing gear pump by numerical simulations.The results show that the pro-posed new gear pump eliminates the phenomenon of trapped oil;composition profiles are simple and easy to optimize the design;in addi-tion,the new gear pump has better working performance and more uniform flow field.
new type of double circular arc-high order curve gear pairtrapped oil phenomenonprofiles optimisationflow field simulation
万方数据
维普
