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时间:2020-05-20
《小长径比组合立管内液塞长度演化规律.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、2015年第39卷中国石油大学学报(自然科学版)Vo1.39No.1第1期JournalofChinaUniversityofPetroleumFeb.2015文章编号:1673—5005(2015)01-0150-07doi:10.3969/j.issn.1673—5005.2015.o1.022小长径比组合立管内液塞长度演化规律王立满,何利民,罗小明(中国石油大学储运与建筑工程学院,山东青岛266580)摘要:以气液柱状旋流分离器(GLCC)人口管之前的小长径比组合立管为对象,建立一套气液两相流试验系统,实
2、验研究组合立管内不同位置的液塞长度统计分布规律。结果表明:液塞从水平入口段进入立管段直至排出的过程中存在液塞减速与加速现象,计算液塞长度时必须考虑。水平入口段、立管段及水平出口段的液塞长度分布均符合对数正态分布:随折算气速增大,入口段平均液塞长度先增大后减小,出口段平均液塞长度则呈减小趋势。在低折算液速下,立管段平均液塞长度随折算气速增大而减小;高折算液速时,平均液塞长度随折算气速增大先增大后减小。液塞通过整个组合立管的过程中,平均液塞长度先增大后减小。关键词:组合立管:段塞流;液塞长度;统计中图分类号:035
3、9文献标志码:A引用格式:王立满,何利民,罗小明.小长径比组合立管内液塞长度演化规律[J].中国石油大学学报:自然科学版,2015,39(1):150—156.WANGLiman,HELimin,LUOXiaoming.Sluglengthevolutionofgas—liquidslugflowincombinedriserpipewithsmalllength—diameterratio5J1.JournalofChinaUniversityofPetroleum(EditionofNaturalScien
4、ce),2015,39(t):150—156.Sluglengthevolutionofgas-liquidslugflowincombinedriserpipewithsmalllength-diameterratioWANGLiman,HELimin,LUOXiaoming(CollegeofPipelineandCivilEngineeringinChinaUniversityofPetroleum,Qingdao266580,China)Abstract:Theevolutionofsluglength
5、distributionwasinvestigatedinacombinedriserpipe,whichisthepipeinfrontoftheinletofgas—liquidcylindricalcycloneseparator(GLCC)withsmalllength—diameterratio.Itisfoundthattheslugvelocitydecreasesastheslugflowsfromhorizontalinlettoverticalsectionandincreasesasitp
6、assesthroughtheverticalsection.Thisphenomenonaffectsthecalculationofsluglength.Thesluglengthdistributionsoftheinlet,verticalpipeandoutletallcon—formtolog—normaldistribution.Withtheincreaseofgassuperficialvelocity,themeansluglengthoftheinletsectionfirstlyincr
7、easesthendecreases,andthemeansluglengthofoutletsectiondecreases.Withtheincreaseofgassuperficialvelocity,themeansluglengthoftheverticalsectiondecreasesatlowliquidsuperficialvelocity,andfirstlyincreasesthendecreasesathighliquidsuperficialvelocity.Themeanslugle
8、ngthfirstlyincreasesthendecreasesfrominlettooutletofthecombinedriserpipe.Keywords:combinedriserpipe;slugflow;sluglength;statistics气液柱状旋流分离器(GLCC)入口管的设计准之前须经过一段小长径比的组合立管,该组合立则是保证管内流型为分层流,当来流管线中存在
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