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1、自然循环蒸汽锅炉设计哈尔滨理工大学学士学位论文DHL35-3.82/450-AⅡ自然循环蒸汽锅炉设计摘要本次毕业设计的题目是DHL35-3.82/450-AII。应用热量平衡和质量平衡和强度理论以及流动、传热原理对锅炉的出力、安全性进行了计算和探讨，从理论上给出了本锅炉的设计数据的科学性。在锅炉设计的过程中，依据燃烧理论，主要考虑保证炉内着火，炉膛内保持足够的温度，煤的燃尽程度以及炉膛容积热负荷和炉膛面积热负荷的影响。在整个锅炉结构的设计过程中，采用经济性和操作性简单的平衡通风方式，确保燃料在炉膛内微负压燃烧。本设计采用单锅筒
2、横置式自然循环方式。炉膛四周布置水冷壁，可吸收炉膛的辐射热并保护炉墙。为保证燃烧充分，采用高而短的前拱，低而长的后拱。尾部受热面布置省煤器和空气预热器，以降低排烟温度，提高锅炉效率。设计采用CAD绘图，绘制了包括锅炉总图、炉墙图、上锅筒展开图、本体图、侧集箱展开图等图样，从技术角度给出了锅炉的概貌。本设计全面遵守锅炉设计规范，结构简单，安全性可靠，经济性合理，对同类锅炉的设计具有一定的参考价值。关键词锅炉；燃烧；换热；设计-II-自然循环蒸汽锅炉设计哈尔滨理工大学学士学位论文ThedesignofboilerofDHL35-3
3、.82/450-AⅡAbstractThisgraduationprojecttopicisDHL35-3.82/450-AⅡ.Theapplicationheatbalanceandthemassbalancingandthetheoryofstrengthaswellasflowed,theheattransferprinciplestrives,theefficiencytotheboiler,thesecurityhascarriedonthecomputationandthediscussion,theoretica
4、llyhasproducedthisboilerdesigndatascientificnature.Amongthewholedesign,thefirstfactorthatshouldbeconsideratesreiouslyisthatthefurnacemustensureburnthefuel,thefurnacemusthaveenoughheatingandhowthefueliscompletelyburnedandtherangeofreleaserateperunit.Inentireboilerstr
5、ucturedesignprocess,usestheefficiencyandtheoperationalsimplebalancedwellventilatedway,guaranteesthefuelinthechambermicronegativepressureburning.Thisdesignusessingle-drumnaturalcirculationboiler.Aroundthefurnacearewaterfalls.Toensurethegoalandcontinuousignitioninthed
6、ouble-archfurnace,ahighandshortfrontarchandalowandlongbackarch.Inthebackstakeflue,Isetairheatertoreclaimtheheatofstakesgasinordertodiclinethetemperatureofthestackgasandimprovetheefficiencyinthefurnace.ThedesignusestheCADcartography,hasdrawnupincludingtheboilerassemb
7、lydrawing,thewallofboilerchart,onpatternandsoonboilerbarreldevelopedview,mainbodychart,hasproducedtheboilergeneralpicturefromthetechnicalangle.Thisdesigncomprehensivelyobservestheboilerdesignstandard,thestructuresimply,securityreliable,theefficiencyisreasonable,hast
8、hecertainreferencevaluetothesimilarboilerdesign.Keywordsboiler,burning,heattransfer,design不要删除行尾的分节符，此行不会被打印-II-目录摘要..IAbstractII第1章绪论41.1
