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1、毕业设计（论文）****天然气长输管道工程设计学生姓名：学号：专业班级：指导教师：年月曰摘要万安一营泉天然气长输管道是中海油的输气干线，计划分期建设。工程包括自某气出净化厂的输气首站至末站全线的管道线路工程、各分输站场及末站工程、输气基地工程、管道穿越工程以及与之相配套的自控、通信、电力、消防、防腐及阴极保护、给排水的等公用系统工程。木次工程管线全长880km,设计压力8MPa,管材选取X70,全线采用变壁厚、等强度设计。本工程设首战1座，分输站2座，压气站5座，，1#分输站与第4压气站合并，2#分输站与第5压气站合并，共设截断阀
2、室42座,预留分输阀室10座。管线末段设计长度236km,选取管径0660mm,输气能力相当于日输气量通过能力的16.25%o全线设计依照经济性最优原则选取参数，木设计中全线管段采用660mm管径管材，按照地区等级要求管道壁厚依次取：一级地区8mm,二级地区10mm,三级地区11mm,四级地区14mm。管道投产阶段不需设压气站，全线凭首站压力即可完成输送，只有在二期满输的时候才开始建设压气站。全线采用以计算机控制系统为核心的监视控制和数据采集(SCADA)系统，全线的运行操作由调度中心完成。一期输量10xl08m3/a,二期为20
3、xl0W/ao投产启输量为5xl0W/ao关键词：天然气、长输管道、储气量、设计压力、分输站AbstractWan"an-YingquanisalongdistancegaspipelineprojectinCNOOCrsgastransmissionlines,phasedconstructionplan.Worksincludeagaspurificationplantfromthefirststationtoterminalstationgastransmissionpipelineprojectsacrosstheboar
4、d,thesub-transmissionstationandendstationproject,gasbasedprojects,pipelinecrossingprojectandtherelatedsupportingself-control,communications,power,fire,corrosionandcathodicprotection,watersupplyanddrainageoftheotherpublicsystemsengineering.Theprojectpipelinefull880km,t
5、hedesignpressureof8MPa,pipeselectX70,fulllineofvariablethickness,suchasstrengthdesign.Theprojectsetupthefirstbattleone,sub-transmissionstations2,CompressorStation5,1#sub-transmissionstationsand4compressorstationscombined,2#minutestransmissionstationsand5compressorstat
6、ionscombined,atotalcut-offvalvechamber42,valvechamberssetaside10.Thelastparagraphofthelengthofpipelinedesign236km,selectthediameterof660mm,gastransmissioncapacityequivalenttocapacityongastransportcapacityof16.25%.Fullrangeofdesigninaccordancewiththeprincipleofselectin
7、gtheoptimaleconomicparameters,thedesignofallpipeswith660mmdiameterpipe,pipewallthicknessrequirementsinaccordancewithregionalratinginturntake:aregional8mm,2classarea10mm,3regional11mm,fourregional14mm・Noproductionstagepipelinecompressorstationslocatedalongthelinewithth
8、epressuretocompletethefirstlegoftransportation,onlytoloseinthesecondexpirationtimepressurebegantobuildgasstations.Fullrangeo
