Research And Application Of Progressive Cavity Pump Optimize Design System Based On Various Design

The Progressive Cavity Pump has advantages of stable transportation, small vibration and good suction performance. It has less motion components and simple structure. With the development of the Progressive Cavity Pump technology, its application range becomes even larger with the capacity of all-medium transportation together with higher technological requirements.The research object used in the dissertation was the screw pump produced by Hangzhou Xinglong Pump Co.,Ltd. The analysis of end face profile formation was completed on its main working component—rotor and stator. And then the structure parameters and working conditions were examined to reveal the effect on the performance of screw pump. According to the features of pump and its components, a design method facing product life cycle was raised based on parametric variant theory, which was suitable for the design of screw pump. On the base of that the optimized design system based on variant design technology was researched, and the function modules of the system were developed. Eventually, a development example was used to realize the variant design system mentioned above.With the foundation of initial work, the 3-D design software—SolidWorks was used within the dissertation for secondary development. The key technology involved in the parametric modeling of the rotor and stator was analyzed, and then parametric modeling process was realized. After that simulation models of different kinds of screw pumps were established based on the cycloid type, radius variation index, and screw head number. The COSMOSMotion was used to analyze motion characteristics on the offset curve of screw rotor, including speed and accelerate. In addition, ANSYS was adopted to analyze the stress, strain of the screw stator, as well as the deformation regulation of contour under uniform and non-uniform pressure. Then the structure parameters of the screw pump were optimized according to the simulation results so that a better performance could be achieved.This study has important theoretical and practical significance, provides a new architecture and implementation methods for the design and manufacture of progressive cavity pump and enterprise product management, also has a high application value.