原油外输泵的内流场动力学仿真分析  

Dynamic simulation analysis of flow field in crude oil centrifugal pump

作　　者：董鹏敏[1] 赵天义 华超 陆野 于宏盛 王天琦[1] 高利飞 DONG Peng-min;ZHAO Tian-yi;HUA Chao;LU Ye;YU Hong-sheng;WANG Tian-qi;GAO Li-fei(College of Mechanical Engineering,Xi'an Shiyou University,Xi'an 710065,China;Changqing Oilfield Second Oil Transmission Office,Qingyang 745199,China;Xi'an Qing'an Electric Control Company of Limited Liability,Xi'an 710077,China)

机构地区：[1]西安石油大学机械工程学院,陕西西安710065 [2]长庆油田第二输油处,甘肃庆阳745199 [3]西安庆安电气控制有限责任公司,陕西西安710077

出　　处：《机电工程》2022年第4期435-443,共9页Journal of Mechanical & Electrical Engineering

基　　金：陕西省自然科学基础研究计划项目(2022JM-150)。

摘　　要：针对某油田原油外输站内1#泵出现的异常振动现象,采用ANSYS软件对原油外输泵泵内的流场动力学进行了仿真分析。首先,采用SolidWorks建立了原油外输泵的三维模型,并进行了流体域抽取;然后,对外输泵的模型进行了网格划分,并进行了网格无关性的验证;选择了正常工作下外输泵的参数作为边界条件,通过动力学仿真对常用转速和流量下外输泵泵内的流线进行了分析,研究了叶轮静压、速度、总压、叶轮壁压、出口压力、泵壳压力等的变化规律;最后,根据仿真分析结果得到了原油外输泵工作的合理转速和流量范围,用于指导实际生产。研究结果表明:当外输泵运行参数在2500~2550 r/min和325~335 m^(3)/h范围内,可以有效降低离心泵的振幅;当1#外输泵的参数为2519 r/min和331 m^(3)/h时,泵轴向振动最小,可以使外输泵的轴向振动幅度从1.3 mm降低到0.68 mm,保证正常的生产运行。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—2550 r/min and 325—335 m^(3)/h respectively.When the parameters of 1#external pump are 2519 r/min and 331 m^(3)/h,the axial vibration of the pump is the smallest,which can reduce the axial vibration amplitude from 1.3 mm to 0.68 mm,and ensure the normal operation of the production.

关 键 词：离心泵 机械振动 流场动力学仿真 叶轮数值分析 ANSYS 

分 类 号：TH311[机械工程—机械制造及自动化]