轴流式两级一体化水力旋流器结构参数优选  

Optimization of structural parameters of axial flow two-stage integrated hydrocyclone

作　　者：张晓光[1,2] 刘佳成 徐保蕊 赵立新[1,2] 司书言 蒋明虎[1,2] ZHANG Xiaoguang;LIU Jiacheng;XU Baorui;ZHAO Lixin;SI Shuyan;JIANG Minghu(School of Mechanical Science and Engineering,Northeast Petroleum University,Daqing 163318,China;Heilongjiang Key Laboratory of Petroleum and Petrochemical Multiphase Treatment and Pollution Prevention,Daqing 163318,China)

机构地区：[1]东北石油大学机械科学与工程学院,黑龙江大庆163318 [2]黑龙江省石油石化多相介质处理及污染防治重点实验室,黑龙江大庆163318

出　　处：《流体机械》2023年第11期71-78,共8页Fluid Machinery

基　　金：国家自然科学基金区域创新发展联合基金项目(U21A20104);中国博士后科学基金资助项目(2021M690594);东北石油大学引导性创新基金项目(2022YDL-07);东北石油大学人才引进科研启动经费资助项目(2020KQ19)。

摘　　要：为实现采油井筒井下等有限空间内开展油水高效分离处理,设计了一种新型轴流式两级一体化水力旋流器,对旋流器9种不同结构参数对分离性能的影响规律进行了系统研究,并对结果进行了试验验证。依据各结构参数对旋流器分离效率的影响,确定了最佳结构参数,获得最高分离效率为96.38%、溢流压降为89.42 kPa;重点对二级稳流锥角参数变化对质量效率影响并不稳定的原因进行探究,研究发现特定的二级稳流锥角为12°时,在二级稳流锥角外壁面处不产生循环流,且在总溢流口上方位置会产生回流现象,从而可最大程度提高分离效率;旋流器内的循环流和回流也会影响压降的变化,增大溢流压降更有利于油相分离。本文研究可为轴流式水力旋流器的结构设计及实际应用提供参考。In order to realize the efficient separation of oil and water in the limited space such as the downhole of the oil production wellbore,a new axial-flow two-stage integrated hydrocyclone was designed,the influence of nine different structural parameters of hydrocyclone on the separation performance was systematically studied by numerical simulation.The results were tested and verified.According to the influence of various structural parameters on the separation efficiency of the hydrocyclone,the optimal structural parameters were determined,under this parameter,the highest separation efficiency is 96.38%,and the overflow pressure drop is 89.42 kPa.This study focuses on the reasons why the effect of the change of the secondary steady flow cone angle parameters on the quality efficiency is not stable.It is found that when the specific secondary steady flow cone angle is 12°,there is no circulating flow at the outer wall of the secondary steady flow cone angle,and there is a backflow phenomenon above the total overflow port,which can maximize the separation efficiency.The circulating flow and reflux in the hydrocyclone also affect the change of pressure drop,and increasing the overflow pressure drop is more conducive to oil phase separation.The research can provide reference for the structural design and practical application of hydrocyclone.

关 键 词：油水分离 轴流式水力旋流器 参数优选 稳流锥角 数值模拟 

分 类 号：TH137[机械工程—机械制造及自动化]