Performance Test Of The Hydraulic Motor Vane Pump Prototype

An experimental system was established for the performance test of the developed prototype of electric motor pump. The parameters consisting of the electric power input, hydraulic power output, rotor speed and internal pressure in the electric motor pump were measured. The characteristic of the rotor speed, noise, power and efficiency changing with the outlet pressure of the prototype was obtained. Compared with the traditional hydraulic power unit which is the same power as the prototype, the volume of the prototype is reduced 50%, the dimension in axial direction shortened 61% and the noise level lowered 7dB, and the speed of rotor in the prototype decreases apparently with the increase of the output pressure. Furthermore, the bubble separation as a result of the narrow channels and the extra leakage due to the ineffectual seal in the prototype were discussed, and the corresponding solutions were proposed.The main contents of the thesis:In chapter 1, the background and significance of this thesis is presented. The history and current research progress on hydraulic motor pump are reviewed. Introducing the hydraulic motors on pumps for Research and research achievements of Lanzhou University of Technology, the main research subjects are presented.In chapter 2, a new design of Hydraulic motor vane pump is put forward, and its principle is also presented. Hydraulic motor vane pump is specially designed with motor and vane pump integrated in a housing and the Hydraulic motor vane pump basic structure is introduced. This chapter provided theoretical guidance for the hydraulic motor vane pump design of the structure.In chapter 3, based on the hydraulic motor vane pump, the prototype has been produced. An experimental system was established for the performance test of the developed prototype of electric motor pump. the hydraulic motor vane pump prototype test theory and test equipment is described. Compared with the traditional hydraulic power unit which is the same power as the prototype, such as rotor Speed, noise, Noise spectrum, temperature, Pressure characteristics, Volumetric efficiency, efficiency, Power Factor (cosf), electric current, Voltage and other parameters. The performance test of the hydraulic motor vane pump prototype provide theoretical guidance and practical guidance for the Hydraulic motor vane pump performance tests.In chapter 4, Aiming at the developed hydraulic motor vane pump prototype and test system, Compared with the traditional hydraulic power unit which is the same power as the prototype, the performance parameters of the prototype are analyzed such as the efficiency of the prototype, output pressure, speed of rotation, and power factor varying with output power, etc. At the same time, analyzed experimental data of the traditional hydraulic power unit is picked up,which is the same power as the prototype. Furthermore, an experimental method was established for the performance test of the developed hydraulic motor pump prototype.