堵塞工况下水力旋流器流场特性及性能分析

doi:10.16085/j.issn.1000-6613.2023-0982

化工进展 ›› 2024, Vol. 43 ›› Issue (7): 3776-3786.DOI: 10.16085/j.issn.1000-6613.2023-0982

• 化工过程与装备 • 上一篇

堵塞工况下水力旋流器流场特性及性能分析

邢雷¹^,²^,³(), 苗春雨¹, 蒋明虎¹^,²(), 赵立新¹^,², 蔡萌⁴, 李新亚¹^,²

^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
^3.大庆油田博士后科研工作站，黑龙江大庆 163453
^4.大庆油田有限责任公司采油工程研究院，黑龙江大庆 163453

收稿日期:2023-06-15 修回日期:2023-07-14 出版日期:2024-07-10 发布日期:2024-08-14
通讯作者: 蒋明虎
作者简介:邢雷（1990—），男，博士，副教授，研究方向为旋流分离理论及应用技术、同井注采技术。E-mail：Nepuxinglei@163.com。
基金资助:
国家自然科学基金区域创新发展联合基金重点支持项目(U21A20104);国家自然科学基金(52304064);中国博士后科学基金面上项目(2023M730481);黑龙江省博士后资助项目(LBH-Z23039);黑龙江省自然科学基金(LH2022E017)

Analysis of flow field characteristics and performance of hydrocyclone in blocked conditions

XING Lei¹^,²^,³(), MIAO Chunyu¹, JIANG Minghu¹^,²(), ZHAO Lixin¹^,², CAI Meng⁴, LI Xinya¹^,²

^1.School of Mechanical Science and Engineering, Northeast Petroleum University, Daqing 163318, Heilongjiang, China
^2.Heilongjiang Key Laboratory of Petroleum and Petrochemical Multiphase Treatment and Pollution Prevention, Daqing 163318, Heilongjiang, China
^3.Postdoctoral Research Workstation in Daqing Oilfield, Daqing 163453, Heilongjiang, China
^4.Oil Production Engineering Research Institute of Daqing Oilfield, Daqing 163453, Heilongjiang, China

Received:2023-06-15 Revised:2023-07-14 Online:2024-07-10 Published:2024-08-14
Contact: JIANG Minghu

摘要/Abstract

摘要：

为研究水力旋流器在井下出现堵塞问题而产生的流场及性能变化规律，以井下倒锥式水力旋流器为研究对象，采用数值模拟与实验相结合的研究方法，对旋流器在六种不同堵塞工况下的流场特性及分离性能进行深入分析，并提出一种流场不对称性的定量表征方法，明确其在不同堵塞工况下旋流场变化及平均偏移不对称情况。结果表明，在三条紧邻流道堵塞的工况中，切向速度及轴向速度的平均偏移不对称率均产生最大值分别为67.82%和34.99%；相对于无堵塞工况，六种不同堵塞工况的平均压降均有所上升，分离效率均有所下降，其中工况六在四条紧邻流道堵塞的工况中，平均压降最大，分离效率最小。通过实验开展不同工况下的分离性能分析，实验结果与模拟结果的平均误差为1.22%，呈现出较好的一致性，为本文数值模拟方法的准确性提供了验证。

关键词: 计算流体力学, 数值模拟, 两相流, 水力旋流器, 速度场

Abstract:

In order to analyze the flow field and performance change regulations of hydrocyclone caused by the blocked problem in downhole, the downhole inverted cone hydrocyclone was used as the study object, and the flow field characteristics and separation performance of the hydrocyclone were analyzed in six different blocked conditions by combining numerical simulation and experiment, and a quantitative characterization method of flow field asymmetry was proposed to clarify the change of the flow field and the average offset unsymmetry of the hydrocyclone under different blocked conditions. The results showed that in condition of three closely neighboring flow channels blocked, the average offset unsymmetry rates of both tangential and axial velocities produced maximum values of 67.82% and 34.99%. Compared with the non-blocked condition, the average pressure drop increases and the separation efficiency decreased in all six different blocked conditions, and working condition six in condition of four closely neighboring flow channels blocked, the average pressure drop was the largest and the separation efficiency was the smallest. The separation performance analysis under different blocked conditions was carried out, and the average error between the simulation results and the experimental results was 1.22%, which reflected a good consistency and proves the accuracy of the numerical simulation results.

Key words: computational fluid dynamics, numerical analysis, two-phase flow, hydrocyclone, velocity field

中图分类号:

TQ051.8

邢雷, 苗春雨, 蒋明虎, 赵立新, 蔡萌, 李新亚. 堵塞工况下水力旋流器流场特性及性能分析[J]. 化工进展, 2024, 43(7): 3776-3786.

XING Lei, MIAO Chunyu, JIANG Minghu, ZHAO Lixin, CAI Meng, LI Xinya. Analysis of flow field characteristics and performance of hydrocyclone in blocked conditions[J]. Chemical Industry and Engineering Progress, 2024, 43(7): 3776-3786.

图/表 16

图1 井下倒锥式水力旋流器结构示意图及不同堵塞工况

表1 井下倒锥式水力旋流器具体结构参数值

主要结构	参数尺寸
入口管长度L₁/mm	50
入口管直径D₁/mm	50
锥段长度L₂/mm	240
尾管长度L₄/mm	50
尾管直径d₁/mm	25
内锥直径d₂/mm	15
内锥高度L₃/mm	150
螺旋流道长度L_s/mm	55
螺旋流道倾角α/(°)	36
螺旋流道条数	5
螺旋流道内径D₂/mm	30

图2 网格无关性检验结果

图3 流体域模型网格划分

图4 实验装置及工艺流程1—搅拌器；2—储水罐；3—储油罐；4—柱塞泵；5—螺杆泵；6—变频调节器；7—静态混合器；8—阀；9—浮子流量计；10—压力表；11—接样阀；12—实验样机；13—废液循环罐

图5 不同堵塞工况下切向速度径向截面分布云图

图6 不同堵塞工况条件下切向速度轴向截面分布云图

图7 不同堵塞工况下分析截面切向速度分布曲线

图8 不同堵塞工况对应的各截面切向速度偏移不对称率

图9 不同堵塞工况条件下轴向速度径向截面分布云图

图10 不同堵塞工况条件下轴向速度轴向截面分布云图

图11 不同堵塞工况下分析截面轴向速度分布曲线

图12 不同堵塞工况对应的各截面轴向速度偏移不对称率

图13 不同堵塞工况下LZVV的分布情况及对应表面积

图14 实验结果与模拟结果油核形态对比

图15 不同堵塞工况对应的平均压降及分离效率

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堵塞工况下水力旋流器流场特性及性能分析

Analysis of flow field characteristics and performance of hydrocyclone in blocked conditions

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