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毕业论文（设计）用纸佳木斯大学教务处第1页毕业论文（设计）用纸佳木斯大学教务处第2页附录1锅炉风机的安装摘要锅炉燃烧离不开锅炉的风系统，风系统包括二次风系统、一次风系统、扫描冷却风系统和炉顶密封风系统。各系统的风均有相应的风机提供。以南京苏源热电有限公司2300MW机组工程4锅炉烟风系统为例分别讲述了AN轴流式吸风机、FAF轴流式送风机、离心风机的安装步骤。关键字锅炉风机作业方法锅炉的燃烧离不开锅炉的风系统，其风系统包括二次风系统、一次风系统、扫描冷却风系统和炉顶密封风系统。各系统的风均有相应的风机提供，所以风机安装的好坏对锅炉安全可靠的运行有着密不可分的作用。以南京苏源热电有限公司2300MW机组工程风机安装作为例子来谈有关风机的安装步骤和有关事宜。南京苏源热电有限公司2300MW机组工程4锅炉烟风系统安装按平衡通风设计，满足一次风机、送风机、吸风机在锅炉低负荷工况或一侧风机故障时单侧运行，空预器进出口烟风道上均设有隔离门。送风机采用50容量的动叶可调轴流风机两台，吸风机采用静叶可调轴流风机两台，一次风机采用50容量的定速单吸离心风机两台。制粉系统采用中速磨冷一次风机正压直吹式。其密封系统采用母管制的密封风系统，每台炉设2台离心式密封风机，一台运行，一台为备用状态。施工任务是安装南京苏源热电有限公司二期2300MW机组4锅炉的送风机、吸风机、一次风机、密封风机。其工程量为动叶可调轴流式送风机两台，配套6KV大功率电动机两台，配备液压润滑油站两套；静叶可调轴流式吸风机两台，配套6KV大功率电动机两台；毕业论文（设计）用纸佳木斯大学教务处第3页单吸离心式一次风机两台，配套6KV大功率电动机两台；单吸离心式密封风机两台，配套380V电动机两台；根据施工图纸要求送风机、吸风机、一次风机、磨煤机密封风机都布置在锅炉房零米层，送风机对称布置在炉架两侧预热器冷空气仓的位置，中心线与锅炉纵向中心线垂直，其起重机械扩侧应为HB36B建筑塔吊，固侧应为KH180履带吊；吸风机对称布置在电除尘器后面，中心线与锅炉纵向中心线平行，其起重机械为KH180履带吊；一次风机对称布置在预热器出口水平烟道的下方，其起重机械为KH180履带吊；密封风机布置在炉内预热器进口空气管道的下方，用卷扬机进行配合安装。在施工作业中具体的步骤如下1AN轴流式吸风机作业方法该类风机安装的一般性规律，是以机壳装配（后导叶和叶轮外壳）为基准和固定端；其进气箱、集气器和前导叶为前（近电机方向）热膨胀滑动端，其扩压器和扩压器芯筒为向后（远电机方向）热膨胀滑动端。其具体安装顺序步骤和要求如下11将全部机件存放于基础附近，清理杂物，除去毛刺，准备起吊设施。12基础清理干净，检查各部分基础标高、各基础孔尺寸；将各部分垫铁、基础板与支腿连接后安放好。基础板找平，检查标高。13将机壳装配（后导叶组件与叶轮外壳组件）并在一起联好后吊入预定位置，穿好地脚螺栓。用框式水平仪找正机壳装配的垂直度和水平度。同时，保持机壳轴线与风机进出口管道一致。14粗找正后，可对后导叶组件和叶轮外壳组件的基础进行一次灌浆。水泥达到规定硬度后，复查找正情况；无误后紧固地脚螺栓达到所需力矩。15将扩压器外壳下半部联好后吊入预定位置，一面与后导叶外壳法兰螺栓相连，另一面将支腿园弧板与支腿和扩压器外壳分段点焊，焊牢。16依次联接小集流器、前导叶组件、大集流器、进气箱各部件下半部。注意按要求在法兰间加密封材料，其进气箱支腿和圆弧调整好位置后电焊点牢。注意在前后支腿毕业论文（设计）用纸佳木斯大学教务处第4页点焊以前，应严格保证其机壳装配的垂直度，防止外悬重力过大，防止倾斜及机壳装配地脚螺栓松动，如吊装就位时不能及时点焊支腿，应用枕木和千斤顶支牢，以保证安全。17按总装图要求对进气箱滑动支腿和扩压器滑动支腿安装。注意螺栓头部外露部分适当加长，以后要加一滑动压板位置（如总装图示）。支腿和支腿圆弧板焊接时注意对称分段焊接，以减少焊接变形。18安装主轴承座，按要求加装防松垫，按规定力矩拧紧联接螺栓；拧紧后按图安装径向测温元件。按图安装前后冷风罩和轴向测温元件，其中锥形冷风罩上半部分可最后装。19吊装叶轮，按规定力矩紧固压盖螺栓，盘车检查轮毂与后导叶芯筒间的轴间隙，叶顶与机壳内壁间的径向间隙尺寸。110叶轮侧半联轴器（FORM03）与叶轮连接，按规定力矩拧紧螺栓。111按图示安装电机端联轴器（FORM01），将电机粗定位于预定位置。112吊装传扭中间轴，其拧紧力矩应达到要求。吊装前建议在电机端准备一个门形架，其转轴与叶轮端联好后，另一端用滑轮吊在门形架中，调好高度，尽早与电机端联轴器联好。注意在吊装过程中当叶轮端联好后，另一端偏移距离不得超过5。否则将对膜片联轴器的弹性性能造成不良影响，甚至可能造成联轴器损坏。113按AN系列轴流风机转轴系找正原理示意图以叶轮端半联轴器和电机主轴水平为基准，找平找正。应保证叶轮端后导叶组件中主轴承座位置的热膨胀补偿量，即电机水平位置的预抬量（具体数据见总装图）。应以两个联轴器膜片间的张口值来保证，其张口值大小，可通过计算得知；按一般的比例，其张口值约020（因烟气温度也是控制在一定范围内）即可。114电机基础、进气箱基础、扩压器基础二次灌浆，达到规定硬度后拧紧地脚螺栓，复查张口数值。115组装扩压器芯筒，传扭中间轴护管，轴封筒等。116组装冷风管护筒，冷风管路安装，油管安装。毕业论文（设计）用纸佳木斯大学教务处第5页117进气箱、大集流器、前导叶、小集流器等上半部、扩压器上半部安装。注意各法兰之间加装密封材料，须现场封焊的圆法兰及对口板外不加密封材料（参见风机总装图）。118调整前，导叶开启程度应基本保持一致，建议在0度时（即前导叶叶片与主轴中心线平行时）调整和检查。119安装前导叶操作执行机构，注意叶片开启，机壳外的指示执行器的指示应保持一致。120按图纸要求安装冷却风机、加油装置、现场测温、测振装置、防喘振报警装置（若有）等（具体见各装配图）。121安装进出口膨胀节、内外保温防护层，整个风机与管道系统连接。122轴向预拉量的调整由于该类风机在热态工况时，烟温较高，传扭中间轴较长，其轴热膨胀量较大（约510MM）。因此在冷态安装时应将单个联轴器的安装间隙比自然间隙预拉开255MM。21设备清点、检查在设备到货的情况下，对设备进行清点检查。22基础划线、垫铁配置，纵横中心线相对锅炉中心线偏差不大于20MM。地脚螺栓箱标高误差不大于10MM，相对之间误差不大于2MM。23轴承组安装轴承组就位安装，要求中心距误差5MM，标高误差10MM，轴承组中心线的水平度公差01MM/M。调整调平螺栓，紧固地脚螺栓。24进气室、扩散器的安装进气室、扩散器就位，安装好地脚螺栓，通过调整垫铁使之与主轴承风筒对正，其标高允许偏差为010MM，水平度偏差不大于3MM。两者与主轴承风筒之间的间隙按图纸要求为20MM。25电机找正和连轴器的安装毕业论文（设计）用纸佳木斯大学教务处第6页风机和电机轴线同轴度公差005MM。联轴器端面之间间隙应均匀，间隙偏差不得大于008MM。26风机的润滑261油站及油管道安装中，严格遵照供油装置的厂家所提出的技术要求进行施工。在需要润滑的各个部位，添加图纸或说明书要求的润滑油或润滑脂。262管道安装力求走向合理，工艺美观，回油管需有35的倾斜。油箱及附件检查、清洗，油箱用煤油做渗油试验，冷油器按其工作压力的125倍作水压试验，附件清洗后，喷油恢复。263对油管路系统进行油冲洗，冲洗化验合格后方可具备试运转的条件。3离心风机作业方法31设备检查、检修311检查叶轮旋转方向、叶片弯曲方向、机壳出风口角度应与图纸相符（特别注意叶轮的左右旋之分）；312机壳、转子外观应无裂纹、砂眼、漏焊等缺陷；机壳内部耐磨衬板应牢固、平整、无松动现象；313入口调节挡板门应零件齐全、无变形、损伤，且动作灵活同步、固定牢固；314轴承冷却水室水压实验应严密不漏，按125倍工作压力进行水压试验；叶轮与轴装配应装配正确，不松动；轴承型号及间隙应符合设计，用压保险丝法检测各间隙；风机轴承推力间隙应在0304MM之间，用压保险丝检查，膨胀间隙应符合图纸规定；安装时应使轴承纵横中心偏差10MM，轴水平度偏差01MM/M；315拆卸下来的零件应妥善保管按顺序编号，放置在干净的地方，以免带上杂物，不可碰伤；32离心风机安装方法321首先，检查地基的外形尺寸、各预留空洞的中心尺寸；地基外型尺寸偏差应在20MM范围内，各预留空洞的中心尺寸偏差应在10MM之间；基础划线，以主厂房建筑基点或锅炉纵横中心线为基准，测得基础纵横主中心线偏差应在10MM，中心线毕业论文（设计）用纸佳木斯大学教务处第7页距离偏差应为3MM，基础标高应在5MM之间；322凿平地基，放置地脚螺栓、布置垫铁，垫铁组一般为2平1斜3付垫铁，厚的放下面，斜垫铁应成对使用；并伸出机框约20MM；找正后应焊牢、不许松动；垫铁应放置在设备主受力台板、机框立筋处或地脚螺栓两侧，在不影响二次灌浆的情况下尽量靠近地脚螺栓孔；323机壳下半部粗定位注意厂家的安装标记，通常“A”、“B”号各位一台，就位前注意区分与进出口风管的关系、叶轮旋向等；324将集流器喇叭口插入叶轮内用铁丝固定后，将整个转动组吊入预定位置；安装地脚螺栓，地脚螺栓的弯曲度应L/100（L为地脚螺栓的长度），地脚螺栓底端不应接触孔底、孔壁。地脚螺栓应受力均匀、并螺栓外露23扣；然后松开铁丝将集流器下部与机壳下半部用螺栓固定初步调整叶轮与喇叭口的间隙。325风机转动组找平、找正风机主轴与轴承座之间的垂直度采用如下方法找正将磁力座贴在主轴上，将百分表表头指向轴承外圈或轴承座弹位端面上（既上端盖加工面上）；此时旋转主轴一周以上其表针读数不大于015MM即可，此读数值为该轴承座与主轴的垂直情况。326电动机找平、找正调整风机与电机主轴同轴度（既联轴器找平找正）。用三块百分表找正，轴向两块、径向一块；每盘动轴90度，记录数据，测量其上下左右的读数，调整同轴度，使其误差005MM；且两靠背轮之间应有10MM间隙。找正后，复查轴中心高度等部分数据，做好记录。327在风机找正后，进行机壳上半部扣盖、集流器与机壳安装就位，两机壳之间应垫石棉绳；拧紧连接螺栓，四边螺栓应受力均匀；以叶轮为基准，再次调整叶轮与喇叭口的间隙。328安装进气箱、入口调节挡板门和风机其余部分，调节挡板转动灵活，否则应加润滑油转动、直至转动灵活方能安装；安装时叶板应固定牢靠，与外壳有充分的膨胀间隙；调节操作装置应灵活正确，动作一致、开度指示标记与实际相符；要注意开启方向，不可装反，进气方向与叶轮旋转方向相同。毕业论文（设计）用纸佳木斯大学教务处第8页329冷却水、润滑油管道布置应符合图纸要求，布置正确、美观，且管道内不得有杂物。参考文献1上海鼓风机厂提供的FAF19951型轴流式送风机使用说明书及设备安装图纸。2成都电力机械厂提供的AN28C6型轴流式吸风机使用说明书及设备安装图纸。3成都电力机械厂提供的G64513NO19F型离心式一次风机使用说明书及设备安装图纸。4上海鼓风机厂提供的919NO16D型离心式密封风机使用说明书及设备安装图纸。5华东六省一市电机工程（电力）学会，锅炉设备及其系统。毕业论文（设计）用纸佳木斯大学教务处第9页附录2BOILERAIRBLOWERINSTALLATIONABSTRACTBOILERBURNINGBOILERSCANNOTBESEPARATEDFROMTHEWINDSYSTEMS,WINDSYSTEMS,INCLUDINGSECONDARYAIRSYSTEM,AWINDSYSTEM,SCANNINGTHECOOLINGSYSTEMANDTOPWINDSEALEDAIRSYSTEMTHEWINDSYSTEMSHAVEPROVIDEDTHECORRESPONDINGFANLIMITEDTONANJINGSUYUAN2300MWTHERMOELECTRICGENERATINGUNITS4BOILERWORKSBREATHI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