大落差管道注水清管过程不满流水力模型研究
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摘要
为了阐明大落差管道注水清管过程中复杂的不满流现象,结合一条大落差管道对其开展深入研究。根据大落差管道注水清管特点,从力平衡以及能量平衡角度出发,提出了一种求解不满流的数学模型,该模型能较好地描述大落差管道注水清管过程中的不满管流动。针对管内被压缩气体与液流耦合求解的难点,提出了一种耦合计算方法。基于该计算方法对大落差管道的不满流过程进行求解,并通过分析计算结果,揭示了大落差管道注水清管过程中的不满流特性。结果表明,在计算清管所需总压力时应考虑不满流的影响,否则会造成计算结果偏小。
In order to clarify the complex slack line flow phenomenon in the filling water and pigging process of big drop pipelines,the in-depth research on slack line flow characteristics is conducted in this study.According to the feature of big drop pipelines,a mathematical model which describes slack line flow process is established on the basis of force balance principle and energy balance principle.Then,the coupling calculation method is proposed to solve slack line flow process.By adopting this method,the computation results are obtained.Through the analysis of results,the slack line flow characteristics are revealed.This study indicates that the consumption of pressure energy in the condition where the slack line flow is considered,is more than that in the condition where the slack line flow is unconsidered.
In order to clarify the complex slack line flow phenomenon in the filling water and pigging process of big drop pipelines,the in-depth research on slack line flow characteristics is conducted in this study.According to the feature of big drop pipelines,a mathematical model which describes slack line flow process is established on the basis of force balance principle and energy balance principle.Then,the coupling calculation method is proposed to solve slack line flow process.By adopting this method,the computation results are obtained.Through the analysis of results,the slack line flow characteristics are revealed.This study indicates that the consumption of pressure energy in the condition where the slack line flow is considered,is more than that in the condition where the slack line flow is unconsidered.
引文
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[16]宇波.应用流体力学[M].北京:中国石油大学出版社,2015.
[2]刘刚,陈雷,张国忠,等.管道清管器技术发展现状[J].油气储运,2011,30(9):646-653.
[3]Quarini J,Shire S.A review of fluid-driven pipeline pigs and their applications[J].Journal of Process Mechanical Engineering,2007,221(1):1-10.
[4]邓涛,陈泷,肖斌涛,等.大落差输气管道水试压后清管的压力脉冲[J].油气储运,2017,36(11):1302-1307.
[5]Tiratsoo J N.Pipeline pigging technology[M].2nd ed.Beaconsfield:Scientific Surveys Limited,1991.
[6]张欣雨.空管投油水力规律研究[D].北京:中国石油大学,2015.
[7]袁庆,吴浩,马华伟,等.长距离大落差重油管道停输再启动研究[J].油气田地面工程,2017,36(11):66-70.
[8]宇波.流动与传热数值计算:若干问题的研究与探讨[M].北京:科学出版社,2015.
[9]宫敬,严大凡.顺序输送管道通过大落差地段的特点[J].管道技术与设备,1995(1):1-4,18.
[10]宫敬,严大凡.大落差管道下坡段不满流流动的瞬态分析[J].抚顺石油学院学报,1996(4):45-50.
[11]宫敬,于达.管道压力骤降所引起的气化过程研究[J].石油化工高等学校学报,2000(2):50-56.
[12]安瑜.山地大落差长输管道试压优化技术研究[D].青岛:中国石油大学,2009.
[13]李长俊,刘浠尧,贾文龙,等.大落差天然气管道清管冲击分析[J].油气田地面工程,2015,34(12):46-48.
[14]陈媛媛,宫敬,于达,等.大落差输油管道不满流分析软件开发[J].油气田地面工程,2013,32(10):1-2.
[15]张楠,宫敬,闵希华,等.大落差对西部成品油管道投产的影响[J].油气储运,2008(1):5-8.
[16]宇波.应用流体力学[M].北京:中国石油大学出版社,2015.