Optimization Design Of Sliding-vane Pump

It is an innovation in the field of artificial lift to transform the traditional slidingvane pump and popularize it in recent years.Field practice has proved that the pump has integrated the characteristics of rod pump and screw pump,convenient maintenance,low processing cost,high system efficiency,obvious energy saving,less one-time investment on the ground.In addition,without any rubber seals,all parts of the pump are metal material,so it is high temperature-resistance,especially suitable for thermal production wells.This is a very promising and efficient artificial lift technology with broad application scenarios.However,because this pump is a new thing and its application scope is not wide enough,relevant scholars in the industry have not carried out largescale research on it,and the most works are the summary of field application and indoor test by field technicians,which greatly restricts the application of this new technology in a larger scope.Therefore,doing the theoretical study of the sliding-vane pump,establishing the flow model in the pump,analyzing the sensitivity parameters,giving the proposal of structure optimization are playing a positive role in the technology innovation,and has important practical significance for guiding the field practice.With applications of the sliding-vane pump in Xinjiang oilfield as the foundation,using the knowledge of fluid mechanics,oil production engineering,mechanics of materials,mechanical design,the article summarizes the law of the flow in the pump,analyzes how parameters and fluid properties influence the pump efficiency by the drawing method,force analysis,experimental analysis,vibration model analysis and other methods.The key content is establishing the theoretical calculation model and optimization design method based on the IPR curve.The results show that the vane is the core part of the sliding-vane pump and the liquid discharge around it is the main reason of flow loss;the sliding-vane pump can performance well when fluids are with high gasliquid ratio,viscous fluid and sand-containing fluid;increasing the eccentricity can improve the displacement and lifting pressure,but at the same time will increase the pump instability;the piece of the vane is odd number can effectively reduce the flow pulsation;the angle of the outlet should be consistent with the angle between the adjacent vane,which can effectively improve the sealing effect and pump efficiency.The research content of this paper plays an important role in a deeper understanding of the sliding-vane pump and provides a new idea and method for the design and research of the pump.