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Dynamic simulation analysis of flow field in crude oil centrifugal pump
Published:2022-06-16 author:DONG Peng-min, ZHAO Tian-yi, HUA Chao, et al. Browse: 617 Check PDF documents
Dynamic simulation analysis of flow field in crude oil centrifugal pump


DONG Peng-min1, ZHAO Tian-yi1, HUA Chao3, LU Ye2, 
YU Hong-sheng2, WANG Tian-qi1, GAO Li-fei1

(1.College of Mechanical Engineering, Xi‘’an Shiyou University, Xi‘’an 710065,China;

2.Changqing Oilfield Second Oil Transmission Office, Qingyang 745199,China;

3.Xi‘’an Qing‘’an Electric Control Company of Limited Liability, Xi‘’an 710077, China)


Abstract:  Aiming at the abnormal vibration phenomenon of No. 1 pump in a crude oil transportation station in Changqing Oilfield,the flow field dynamics of the crude oil transportation pump was simulated and analyzed by ANSYS. Firstly,SolidWorks was used to build a three-dimensional model of the crude oil pump,and the fluid domain was extracted. Then the model of the crude oil pump was divided into grids,and the grid independence was verified. The boundary conditions select the parameters of the crude oil pump under normal operation,through the dynamic simulation analysis,the flow line analysis in the pump and the variation laws of the impeller static pressure,speed,total pressure,impeller wall pressure, outlet pressure and pump shell pressure were studied under the common rotating speed and flow rate. Finally,according to the simulation results,the reasonable rotation speed and flow range of the crude oil pump were proposed, which could be used to guide the actual production. The results show that the amplitude of centrifugal pump can be reduced effectively when the operating parameters of external pump are in the range of 2500—2550r/min and 325—335m3/h respectively. When the parameters of 1 # external pump are 2519r/min and 331m3/h,the axial vibration of the pump is the smallest,which can reduce the axial vibration amplitude from 1.3mm to 0.68mm,and ensure the normal operation of the production.

Key words:  centrifugal pump; mechanical vibration; flow field dynamic simulation; impeller numerical analysis; ANSYS


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