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时间:2020-06-16
《原油管道差温顺序输送水力-热力耦合计算模型.pdf》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、彳由乞锚连2013年2月第32卷第2期输送工艺文章编号:1000.8241(2013)02.0143.09原油管道差温顺序输送水力一热力耦合计算模型王凯张劲军’宇波’1.中国石油大学(北京)城市油气输配技术北京市重点实验室,北京1022492.中海油研究总院深水工程重点实验室,北京100027摘要:原油差温顺序输送是指顺序输送具有不同流动特性的原油时,根据安全与节能的需要,调整油品加热温度以节约能耗的一种管输技术。建立了埋地原油管道差温顺序输送的数学模型,提出了移位网格下的虚拟边界条件法。编制了较为严格的非稳态水力一热力耦合计算程序,可用于管道设计与运行阶段出站温度、流量和
2、压力随时调整,以及地温、原油物性和土壤物性发生变化的条件下,任意油品种类数与油品排列次序,任意批次数与批次量的工艺计算。利用新大管道原油差温顺序输送现场测试数据对模型进行了验证,结果表明各批次原油进站温度实测值与计算值的平均偏差较小,最大为1.4℃。(表5,图19,参15)关键词:原油管道;顺序输送;差温;非稳态;水力一热力耦合;数值模型中图分类号:TE83文献标识码:Adoi:10.6047~.issn.1000.8241.2013.02.007Hydraulic-thermalcoupledmodelofdifferenttemperaturebatchtranspOr
3、tatiOnofcrudeoilpipelineWangKai一,ZhangJinjun,YuBo1.BeijingKeyLaboratoryofUrbanOilandGasDistributionTechnology,ChinaUniversityofPetroleum(Beijing),Beijing,102249;2.DeepwaterEngineeringKeyLaboratory,CNOOCResearchInstitute,Beijing,100027Abstract:Pipeliningofcrudeoilsinbatcheswithdiferentout—s
4、tationtemperaturesisanewtechnologythattheheating/out-stationtemperatureisadjustedinaccordancetosafetyandenergy--savingrequirementsbasedontheflowpropertiesofpumpedcrudes.Amathematicalmodel,whichissolvedbythevirtualboundaryconditionontheshiftgridsforthefirsttime.isdevelopedtodescribetheunste
5、adyflowandheattransferofdifferenttemperaturebatchtransportationofcrudeoilburiedpipeline.Duetothecompacthydraulic—thermalcoupling,thenumericalcodecancompetentlybeusedtosimulatetheoperatingparametersundercomplexconditionsduringdesignoroperationstages,includingtheadjustmentoftemperature,flowr
6、ateandpressurewheneverattheout—stationposition,thechangeofgroundtemperatureandphysicalpropertiesofcrude/soilalongthepipeline,andtheunlimitednumberofcrudeoiltypesandbatcheswithorderingfreelyandvolumeoptionally.ThemodelisverifiedbythefielddataofXingang-Dalianpipelinetransportingcrudeoilsinba
7、tcheswithdiferentout-stationtemperatures,andtheresultsshowthatthemeanofthedeviationineachbatchbetweenthemeasuredandthecomputedin·stationtemperaturesiswithin1.4。C.(5Tables,19Figures,15References)Keywords:crudeo订pipeline,batchtransportation,differenttemperatures
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