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毕业设计（论文）报告纸共页第页┊┊┊┊┊┊┊┊┊┊┊┊┊装┊┊┊┊┊订┊┊┊┊┊线┊┊┊┊┊┊┊┊┊┊┊┊┊摘要本次毕业设计的课题为宝鸡阳光城小区的供暖系统，包括供热外网和换热站的设计。该小区包括住宅楼与商业用楼，总建筑面积为105410m2，热用户计算热负荷为4849kW。小区换热站以城市供热管网130/70℃的水为热媒，用地板辐射采暖，采暖供回水温度为55/45℃。首先，根据设计题目搜集资料，确定供热系统的相关方案。包括集中供热系统的选择、枝状管网的确定、热负荷的计算、热媒的选择及其参数的确定。然后，进行小区供热外网的设计。包括管道的敷设、管网中固定支架、阀门井、补偿器等附件的位置与数量的确定，管道的保温，管网的水力计算。通过水力计算确定管网的管径以及压力损失，并进行不平衡率的计算，尽量使每段管线都能达到水力平衡。接着，确定换热站系统流程；对换热器、循环水泵、定压水泵等主要设备进行选型计算；合理布置所有的设备以及它们之间的管道。同样，还要对换热站内部进行水力计算以求得各种管路的管径。最后，根据设计的供暖系统的特点提出合理有效的运行调节方法，利用自控装置，将整个供热系统设计成为根据用户需要变质量流量运行的智能系统。关键词：供热外网；换热站；水力计算；运行调节毕业设计（论文）报告纸共页第页┊┊┊┊┊┊┊┊┊┊┊┊┊装┊┊┊┊┊订┊┊┊┊┊线┊┊┊┊┊┊┊┊┊┊┊┊┊AbstractThisisaheatingsystemdesignaboutonedistrictinBaoJi,whichincludesoutdoorheatingpipenetworkandheattransferstation.Thedistrictcontentsresidencebuildingandbusinessbuilding,thetotalconstructiongareaisabout105410m2andheatloadisabout4849kW.Intheheatingsystem,theheattransferstationwhichtakes130/70℃hightemperatureheatmediumashightemperatureheatmediumand55/45℃watercirculatingwaterasheat-supplying-medium.Firstly,needingtocollectsomeinformationbasisthedesignsubject,andconfirmingthecorrelationschemeabouttheheatingsystem.Itcontentstheoptionoftheconcentrateheatingsystem,theconfirmingofbranchpipelinenetwork,thecalculateoftheheatingsystem,thechoosingofheatmediumanditsparameter.Secondly,puttingupthedesignabouttheoutdoorheatingpipenetwork.Itcontentsthelayingofpipe,definingthepositionandnumberoftheaccessoriessuchasfixedsupports,valvewellsandcompensators,thedefiningofthepipeline,thehydrauliccomputationofthepipeline.Throughthehydrauliccomputation,wecanconfirmthediameterofthepiplingandthepressurelossing,computingthehydraulicunbalancerateinordertomakethehydraulicbalanceoneverypipling.Then,theprocessofheatingmediumflowisdetermined.Afterthetypeofheatexchanger,watercirculatingpumpsandmake-upwaterpumpsarechosen;theyandthepipelinesamongthemarearrangedrationally.Also,thehydrauliccomputationofinternalheattransferstationshouidbeworkoutedtomeettheneedofeverypipling.Finally,accordingtothecharacteristicoftheheatingsystem,areasonableandeffectiveoperationandregulationmethodshouldbeproposed.Keywords:outdoorheatingpipenetwork;heattransferstation;hydrauliccalculation;operationandregulation毕业设计（论文）报告纸共62页第页┊┊┊┊┊┊┊┊┊┊┊┊┊装┊┊┊┊┊订┊┊┊┊┊线┊┊┊┊┊┊┊┊┊┊┊┊┊1目录前言......................................................................................................................4第一章原始资料.......................................................................................51.1工程概况..................................................................................................51.2原始资料..................................................................................................51.2.1气象资料........................................................................................51.2.2建筑资料资料................................................................................51.2.3燃料资料........................................................................................51.2.4水质资料........................................................................................6第二章集中供热系统的热负荷.........................................................72.1集中供热热负荷的特征..........................................................................72.2集中供热热负荷的计算..........................................................................72.3集中供热系统热媒的选择....................................................................102.4集中供热系统热媒参数的确定............................................................102.5热网系统型式的确定............................................................................11第三章室外管网的设计......................................................................123.1外网管道布置原则................................................................................123.2外网管道敷设方式................................................................................133.3供热管道及其附件................................................................................153.3.1供热管道......................................................................................153.3.2阀门..............................................................................................173.3.3管道的放气与排水......................................................................193.4补偿器....................................................................................................203.4.1补偿器的特性及计算..................................................................203.4.2补偿器的分类和型号选择..........................................................213.5支架........................................................................................................22毕业设计（论文）报告纸共62页第页┊┊┊┊┊┊┊┊┊┊┊┊┊装┊┊┊┊┊订┊┊┊┊┊线┊┊┊┊┊┊┊┊┊┊┊┊┊2第四章外网水力计算...........................................................................254.1水力计算的主要任务............................................................................254.2水力计算的基本原则............................................................................254.3水力计算方法及步骤............................................................................254.4管路水力计算举例......