电潜离心泵内流场及外特性的数值模拟分析
Numerical Simulation Analysis for Internal Flow Field and External Characteristics of Electric Submersible Centrifugal Pump
薛晓雨 1董祥伟 1孟繁琪 1李增亮1
作者信息
- 1. 中国石油大学(华东)机电工程学院,山东 青岛 266580
- 折叠
摘要
针对目前油田使用的两种不同叶导轮结构的电潜离心泵,包括传统径向流泵和聚驱用混向流泵,采用计算流体动力学(CFD)研究方法,建立电泵内流场的数值仿真,在流量80～200m3/d范围内,研究泵输送不同运动黏度为 1～40mm2/s介质时特性差异.在介质黏度为 1 和40mm2/s,流量为 80～180m3/d工况下,使用FLUENT软件选用标准k-ε湍流模型和SIM-PLE算法进行求解,分析两种泵在不同工况下的内部流场变化规律,通过流场分析探究叶轮结构对泵外特性的影响机制.仿真得到泵的扬程、效率曲线,发现泵性能出现变化的工况点与叶轮内流场分析结果相对应,并根据泵叶轮的内流场分布和泵的性能曲线分析两种泵所适用的工况.结果表明,径向流泵适用于大流量和高黏度工况,混向流泵适用于较低流量和中低黏度工况,为不同工况下泵的选择及泵的优化提供理论依据.
Abstract
A numerical simulation of the flow field inside the electric submersible centrifugal pump was established using computational fluid dynamics(CFD)research methods for two different blade guide wheel structures currently used in oil fields,including traditional radial flow pumps and polymer flooding mixed flow pumps.Within the flow rate range of 80-200m3/d,the differences in characteristics of the pump when transporting media with different motion viscosities of 1-40mm2/s were studied.Under the condition of medium viscosity of 1 and 40mm2/s and flow rate of 80 to 180m3/d,FLUENT software was used to analyze the internal flow field variation rule of two pumps under different working conditions with standard k-ε turbulence model and SIMPLE algorithm,and the influence mechanism of impeller structure on pump external characteristics was explored through flow field analysis.The head and efficiency curves of the pump were obtained by simulation,and it was found that the operating conditions where the pump performance changed were corresponding to the analysis results of the flow field in the impeller,and the appli-cable operating conditions of the two pumps were analyzed according to the distribution of the flow field in the impel-ler and the performance curves of the pump.The results show that radial flow pump is suitable for large flow rate and high viscosity conditions,mixed flow pump is suitable for low flow rate and medium and low viscosity conditions,which provides theoretical basis for the selection of pumps and pump optimization under different conditions.
关键词
潜油电泵/叶轮/数值模拟/计算流体力学/介质黏度Key words
Submersible electric pump/Impeller/Numerical simulation/Computational fluid dynamics/Medium viscosity引用本文复制引用
基金项目
国家科技重大专项(2016ZX05011004-002)
山东省自然科学基金(ZR2018MA028)
山东省自然科学基金(ZR2018BA020)
出版年
2024
NETL
NSTL
万方数据