Analysis of abnormal vibrations of crude oil efflux pumps using Ansys

In this study, abnormal vibrations of 1 pump ﬂuid in a crude oil eﬄux station in the Changqing Oilﬁeld was investigated. Kinetic simulation was applied to ﬂow ﬁelds in the crude oil eﬄux pump using Ansys to determine trends of the impeller static pressure, speed, total pressure, wall pressure of the impeller, outlet pressure and pressure on the pump shell and to identify the reasons behind the abnormal vibrations. The results indicated that the axial vibration amplitude of the pump could be reduced from 1.3 mm down to 0.68mm if the operation parameters of the external control oil pump were set as 2500-2550r/min and 325-335m 3 /h, respectively.