小区采暖毕业设计.docx

小区采暖毕业设计.docx

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小区采暖毕业设计

小区采暖毕业设计

【篇一：

小区供热系统的毕业设计说明书最终】

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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

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abstract

thisisaheatingsystemdesignaboutonedistrictinbaoji,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

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目录

前言......................................................................................................................4第一章原始资料......................................................................................5

1.1工程概况.................................................................................................51.2原始资料.................................................................................................5

1.2.1气象资料.......................................................................................51.2.2建筑资料资料...............................................................................5

1.2.3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........................................................7

2.1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.....................................................................12

3.1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...............................................................................15

3.3.1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..........................................................21

3.5支架.......................................................................................................22

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第四章外网水力计算..........................................................................25

4.1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...........................................................................25

4.4管路水力计算举例................................................................................26

第五章换热站的设计..........................................................................34

5.1设计题目...............................................................................................345.2原始资料...............................................................................................345.3换热站概述...........................................................................................355.4换热站设计原则...................................................................................355.5换热站的布置原则...............................................................................365.6设计方案...............................................................................................36

5.6.1换热站设计方案.........................................................................375.6.2采暖热水供回水系统.................................................................375.6.3补水定压系统.............................................................................375.7设备的选择与计算...............................................................................38

5.7.1换热器.........................................................................................385.7.2循环水泵.....................................................................................395.7.3补水泵.........................................................................................415.7.4补水箱的选型.............................................................................445.7.5水处理设备的选型.....................................................................455.7.6分集水器的选型.........................................................................475.7.7除污器的选型.............................................................................485.8换热站内部水力计算...........................................................................50

第六章供热系统运行调节................................................................53

6.1供热系统的初调节...............................................................................536.2供热系统的运行调节...........................................................................54

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第七章供热管道的保温与防腐......................................................58

7.1供热管道的保温...................................................................................587.2供热管道的防腐...................................................................................59

参考文献........................................................................................................61致谢................................................................................................................62

【篇二：

采暖毕业设计】

目录

一、绪论.......................................................................................................................................................2

二、设计原始资料.........................................................................................................................................3

（一）设计题目..........................................................................................................3

（二）设计原始资料..................................................................................................3

三、采暖系统设计热负荷计算.....................................................................................................................4

（一）设计气象资料的确定......................................................................................4

1．设计气象资料确定原则.......................................................................4

2．具体气象参数选取设...........................................................................5

（二）采暖设计热负荷计算方法..............................................................................6（三）围护结构的基本耗热量..................................................................................6

1．计算公式...............................................................................................6

2．围护结构的传热系数...........................................................................7

3．室内计算温度及温差修正系数...........................................................7

4．基本耗热量的计算举例.......................................................................8（四）围护结构的附加耗热量..................................................................................9

1．围护结构的附加（修正）耗热量........................