安徽建筑工业学院建筑环境与热能工程系PAGE\*MERGEFORMAT82摘要城镇燃气化是城市现代化的重要标志之一。城镇燃气在发展生产、提高人民生活水平、节约能源、减轻污染、改善环境等方面起着重要作用。本设计主要是针对合肥地区某市进行燃气管网的规划，该设计采用天然气为气源，燃气管道主要采用钢管。首先根据城市的面积及人口情况对该市的燃气需用量进行确定，然后根据用气量及规划要求进行管网设计。在设计燃气管网时，应全面考虑经济、技术等方面因素，选择经济合理的最佳方案。因此本设计选用了中压一级管网系统。根据管网的布置和流量，经过水力计算的一系列步骤确定管径；再将管径作为已知条件，选取调压设施以及用户燃具以满足供应的压力要求，因此设计具有一定的技术性和经济性。关键词：天然气管网用气量水力计算门站管径AbstractTowngasisoneoftheimportantsymbolsofurbanmodernization.Towngasplaysanimportantroleinthedevelopmentofproduction,improvinglivingstandards,energyconservation,reducepollution,improvetheenvironment.ThedesignisintendedforaplanningofcitygaspipelinenetworkinHefeiarea,thedesignusesnaturalgasasthegassource,gaspipelinesprimarilyusedinthesteel.Firstly,accordingtothecityareaandthedemographicsituationofthethisareatodeterminetheamountofgasneeded;andsecondlytodesignthenetworkaccordingtothegasconsumptionandtherequirementsoftheplan.Inthedesignofgaspipelinenetwork,theeconomic,technologicalandotherfactorsshouldbeconsideredcomprehensively;finally,weshouldchoosethebesteconomicalsolution.thereforethisdesignhasselectedcenterpresseslevelofpipenetworkssystems.Intheabovepipenetworksystem,usedtheregiontoadjustthepressuretostandtotheregionairfeedway.Accordingtopipenetworkarrangementandcurrentcapacity,processwaterpowercomputationaseriesofstepsdefinitecaliber;Againthecalibertookthedatum,afterselectstheaccenttopressthefacilityaswellastheuseragainburnshassatisfiesthesupplythepressurerequest.Thedesignhastheverygoodtechnicalnatureandtheefficiency.Keywords:NaturalgaspipelinenetworkGasconsumptionHydrauliccalculationNaturalgasGateStationDiameter目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc326968200"摘要PAGEREF_Toc326968200\h1HYPERLINK\l"_Toc326968201"序言PAGEREF_Toc326968201\h8HYPERLINK\l"_Toc326968202"1概述PAGEREF_Toc326968202\h9HYPERLINK\l"_Toc326968203"1.1工程概况PAGEREF_Toc326968203\h9HYPERLINK\l"_Toc326968204"1.1.1地理位置PAGEREF_Toc326968204\h9HYPERLINK\l"_Toc326968205"1.1.2城区概况PAGEREF_Toc326968205\h9HY