工艺管道上倾段的积水流动特性分析-b5b3bcca.pdf

采输技术

DOI：10.3969/j.issn.1001-2206.2023.02.007

工艺管道上倾段的积水流动特性分析

马宁

中国石油华北油田公司，河北廊坊065000

摘要：工艺管道是连接动设备和静设备的桥梁，当工艺管道内部存在积水时会引发腐蚀风险，造成阀门、泵

叶轮和储罐吸入口等关键部位堵塞，进而引发设备安全问题。采用OpenFOAM软件中的InterFoam求解器计

算油水界面的波动情况，分析了实验值和模拟值的吻合性，得到了不同条件下的油水界面形态、原油流速对积

水移动的影响及油水界面所发生的Kelvin-Helmholtz界面波动现象。结果表明：实验值和模拟值的一致性较

好；上倾管道的油水界面形态与壁面湿润性有关，当接触角θ=30°（亲水性壁面）时，油水界面呈波浪状；当

接触角θ=120°（疏水性壁面）时，积水在上倾管道上聚集为水团；积水移动速度随接触角θ和原油流速的增加

而增加，当流速超过临界流速时，积水会出现加速移动现象。

关键词：工艺管道；积水；壁面润湿性；携水流动；数值模拟

Analysisofwaterflowcharacteristicsinupdipsectionofprocesspipeline

MANing

PetroChinaHuabeiOilfieldCompany,Langfang065000,China

Abstract：Theprocesspipelineisabridgeconnectingdynamicequipmentandstaticequipment.Whenthereiswaterinsidetheprocess

pipeline,itwillcausecorrosionrisk,resultingintheblockageofthevalve,pumpimpeller,storagetankinlet,andotherkeyparts,

therebyleadingtoequipmentsafetyproblems.TheInterFoamsolverinOpenFOAMsoftwarewasusedtocalculatethefluctuationofthe

oil-waterinterface,andthecoincidencebetweentheexperimentalandsimulatedvalueswasanalyzed.Themorphologyoftheoil-water

interfaceunderdifferentconditions,theeffectoftheoilvelocityonwatermovement,andtheKelvin-Helmholtzinterfacefluctuation

phenomenonwereobtained.Theresultsshowthattheconsistencybetweenexperimentalandsimulatedvaluesisgood.Themorphology

oftheoil-waterinterfaceintheupdippipelineisrelatedtowallwettability.Whenthecontactangleθ=30°(hydrophilicwall),theoil-

waterinterfaceiswavy,whilethewateraccumulatesintowatermassintheupdippipelinewhenthecontactangleθ=120°(hydrophobic

wall).Thevelocityofwatermovementincreaseswiththeincreaseofthecontactangleθandcrudeoilvelocity.Whenthevelocity

exceedsthecriticalvelocity,thewatermovementwillaccelerate.

Keywords：processpipeline;water;wallwettability;carryingwaterflow;numericalsimulation

工艺管道是连接泵类动设备和储罐类静设备节约运行管理费用。然而，受油水两相流动在上

的桥梁，通常设备之间的工艺管道管径较小，压倾管道段复杂