燃气设计说明书

XX大学学生毕业设计（论文）摘要城市燃气是城市建设的重要基础设施之一，也是城市能源供应当中一个重要组成部分，它为城市工业、商业和居民生活提供优质气体燃料。城市燃气输配系统的绝大部分系统的绝大部分工程量，属与城市地下基础工程。本设计的主要内容为老城区天然气供应的规划。该设计使用的天然气管道主要是无缝钢管。XX区总供气面积为237公顷，人口达9.48万，属于小型城市，居住也比较集中。进行规划时除建设接收长输管线天然气的门站外，还设置区域调压站。因此，除管网的水利计算外，还有门站，区域调压站的设备选型计算。本设计囊括了从长输管线到门站，经过区域调压站最后进入区域管网的过程。幸福小区有79栋楼，共948户，包括了平面管网的布置，用户引入管的设计，单管阀门井的设计，凝水缸的设计。关键词：天然气门站管道工艺流程节点压力流量XX大学学生毕业设计（论文）AbstractCitygasisanimportantcity-buildinginfrastructureasurbanenergysupply.Itisalsoanimportantcomponentoftheurbanindustrial,commercialandresidentialgasbythewaysofprovidingqualitygas.Citygastransmissionanddistributionsystemisabasicprojectoftheurbanundergroundworksinthevastmajorityofengineeringsystems.ThemainelementsofthedesignistheplanningofnaturalgassupplyinLaochengdistrict.Seamlesssteelpipeisusedasgaspipelineinthisdesign.Laochengdistrictwhichcoversasupplyareaof237hectares,population94,800,isasmallcityandthelivingisalsorelativelyconcentrated.Notonlyisagasstorageanddistributionstationinneed,butalsoaregionalregulatorstationneedtobesetupwhenplanningtoreceivelong-distancepipeline.Therefore,inadditiontothewaterpipenetworkcomputing,thereareequipmentselectionsofStorageandDistributionStation,regionalregulatorstations.Thedesignmainlyincludeslong-distancepipelinesfromthereservoirdistributionstations,regulatorstations,aftertheregionalfinaltoentertheprocessofregionalpipelinenetwork.Therewere79residentialbuildings,atotalof948,inXingfuarea.Thelayoutofflatpipenetwork,thedesignofuserconductorandthedesignofcondensatewatertanksareincluded.Keywords:NaturalGas；StorageandDistributionStation；pipeline；Technologicalprocess；jointpressure；fluxXX大学学生毕业设计（论文）目录1原始资料.....................................................................................................................11.1用气量指标........................................................................................................11.2基本参数............................................................................................................22天然气性质的计算................................................................................................42.1天然气平均分子量..........................................................................................52.2天然气的平均密度..........................................................................................52.3相对密度............................................................................................................62.4粘度......................................................................................................................62.5爆炸极限............................................................................................................82.6干湿燃气的高低热值...................................................................................103用气量的计算.......................................................................................................123.1各类用户用气量计算...................................................................................123.2绘制储气变化曲线.......................................................................................144燃气管网规划................................................................错误!未定义书签。4.1燃气管网系统选择和管线的布置原则...................................................194.2调压站..............................................................................................................234.3调压器..............................................................................................................274.4管道、阀门的选择.......................................................................................30XX大学学生毕业设计（论文）4.5水力计算.........................................................................................................335门站设计..................................................................................................................405.1门站设计.........................................................................................................405.2门站平面布置..................................................................................................415.3储气罐的选择..................................................................................................436小区燃气设计.......................................................................................................436.1布线....................................................................................................................446.2燃气区域调压柜............................................................................................496.3水力计算.........................................................................................................506.4设备选择.........................................................................................................566.5管道埋设.........................................................................................................597设计总结..................................................................................................................61参考文献..........................................................................