大倾角上倾管气液两相流动特性.pdf

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CHEMICAL INDUSTRY AND ENGINEERING PROGRESS
2017年第36卷第8期
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研究开发
大倾角上倾管气液两相流动特性
王权山2,李玉星2,胡其会2,王琳3,刘昶
中国石油大学(华东)储运与建筑工程学院,山东青岛266580;2山东省油气储运安全省级重点实验室,山东
青岛266580;3西南交通大学力学与工程学院,四川成都610031;4北京中航油工程建设有限公司,北京10002
摘要:针对地形起伏区域常见的大倾角上倾管气液两相流动问题,利用室内实验装置进行气液混輸实验,对气
液两相流的流型、压力波动特性进行了研究。实验中观浏到6种流型,得到了不同气液流量和倾角下压力波动
的时域值、概率密度西数(PDF)、累积分布函数(CDF)和功率语密度(PSD)特征。实验结果分析表明:由
于气体的膨胀和段塞运动的惯性,严重段塞流气液喷发阶段时,上倾管上部会出现下部压力小于上部压カ的现
象;得到了不同折算气速、折算液速和倾角的压力信号并进行统计学分析;PDF呈单峰或双峰分布;不同流型
的CDF的斜率、拐点和曲线位置不同;PSD图会出现一阶、二阶、三阶和多阶波峰,甚至无波峰分布:在同等
气液流量下,随着倾角的增加,严重段塞流的周期和压力波动值増大;结合压カ波动特性及对应分析结果可以
进行流型识别并对设备的迸型以及管道的安全运行提供参考。
关键词:上倾管;气液混输:流型;压力波动;概率密度西数:累积分布函数;功率谮密度
中图分类号:O3597.1
文献标志码:A文章编号:1000-6613(2017)07-2822-08
DOI:10.16085/.issn.1000-6613.2016-2339
Characteristics on gas-liquid two-phase flow in large inclination
upward pipe
WANG Quan 2, LI Yuxing, HU O hui2, WANG Lin', LIU Chang
(College of Pipeline and Civil Engineering in China University of Petroleum, Qingdao 266580, Shandong, China
Shandong Key Laboratory of Oil &Gas Storage and Transportation Safety Engineering, Qingdao 266580, Shandong
China; School of Mechanics and Engineering in Southwest Jiaotong University, Chengdu 610031, Sichuan, China
Beijing Aviation Oil Construction Limited Company, Beiing 100012, China)
Abstract: Large inclination upward pipe is common in hilly terrain area. In this paper, flow patterns
were obtained and gas-liquid two-phase flow pressure fluctuations in the upward pipe were measure
using an indoor experiment apparatus. Six flow patterns were observed during the experiment. Both
time domain, PDF(probability distribution function), CDF(cumulative distribution function)and PSD
( power spectral density characteristic values of the pressure fluctuation under different superficial
gas velocity as well as superficial liquid velocity and angle were obtained. Results showed that, due t
the expansion of the gas and the inertia of the slug in the large inclination, the pressure value of the
pressure sensing point would be lower than the higher point during the blowout of severe slugging. The
characteristics of time domain, PDF, CDF and PSD characteristic values of the pressure fluctuation under
收稿日期:2016-12-19:修改稿日期:2017-03-15。
师,主要从事油气水混输工艺技术、输气管道运行模拟仿真技术、天
基金项目:国家自然科学基金项目(51404290)
然气水合物技术、深水流动保障技术等方面的研究。E-mail:
第一作者:王权(1992-),男,硕士研究生,研究方向为气液两相
lyx1370809333②163.com
流。Emai:wang@s.upe.edu.cn。联系人:李玉星,教授,博士生导
万方数据