锅炉控制系统设计

课程设计说明书课题名称： 锅炉装置自动控制系统设计 专业班级： ************ 学生学号： ****** 学生姓名： ** 学生成绩： 指导教师： ***** 课题工作时间： 2012.12.17至2012.12.21 1武汉工程大学教务处填写说明：表中第一、二、三、六项由指导教师填写；第四、五两项由学生填写。表中第一、二、三在在课程设计开始前填写，第四、五、六项在课程设计完成后填写。本表格填写完整后连同正文装订成册。一、课程设计的任务或学年论文的基本要求一、课程设计的任务或学年论文的基本要求任务：完成锅炉装置自动控制系统设计。包括1．熟悉锅炉装置工作要求，确定系统方案。2．合理选择控制设备型号及规格，编制设备表。3．完成相关图纸的设计。4．编制设计说明书。要求：控制方案合理、控制设备选型合理，图纸符合有关设计标准及规范。具体内容包括1．设计说明书，包括1）锅炉装置工艺说明2）相关控制系统说明3）自控设备选型（计算）说明4）自控设备表一览表2．设计图纸（图纸符合相关国家标准），包括1）仪表管道流程图（PID）2）仪表盘正面布置图3）仪表盘背面电气接线图二、进度安排二、进度安排1～2收集查阅资料，熟悉锅炉装置操作要求确定系统控制方案及选型原则3～4熟悉相关图纸标准、绘制流程图设备选型、编制设备一览表，绘制布置图及接线图5设备计算撰写设计说明书、答辩三、参考资料或参考文献1．产品手册及选型样本2．杨三青，王仁明，曾庆山.过程控制.华中科技大学出版社.20083．孙洪程等.过程自动化工程.机械工业出版社.20104．孙洪程，李大宇.过程控制工程设计.化学工业出版社.20095．谭天恩，窦梅，周明华等.化学工业出版社.2006指导教师签字：年月日教研室主任签字：年月日四、课程设计摘要（中文）本次设计中，我们选取的被控对象为工业领域广泛应用的自然循环锅炉。根据工艺流程指标及其控制要求，本次设计采用反馈控制方案来控制烟气含氧量、排烟温度、蒸汽温度、汽包水位、炉膛压力、燃料气压、除氧器压力及其液位。另外，考虑到安全因素，本次设计还采用了串级控制方案，以蒸汽压力为主变量、汽包压力为副变量，来满足对蒸汽压力的控制。根据控制方案及控制要求，本次设计还完成了自控设备的选型和工艺管道流程图的相关设计内容。关键字：锅炉；反馈控制；串级控制五、课程设计摘要（英文）五、课程设计摘要（英文）Inthedesignthecontrolledobjectwechooseisadevicewhichiswidelyusedinthenaturalcirculationofindustrialfield.Thefeedbackcontrolschemeisadoptedtosatisfythecontrolrequirementsoftheoxygencontentofthefluegas,smoketemperature,steamtemperature,steamdrumwaterlevelofboiler,furnacepressure,fuelpressure,deaeratorpressureanditsliquidlevelaccordingtotheprogress.Inaddition,thecascadecontrolschemeisalsoadoptedtomeettherequirementofthesteampressurewiththesteampressureasmainvariablesandthedrumpressureasassistantvariable,consideringsecuriTheselectionoftheautomationequipmentsandthePIDarealsocompletedinthisdesign.Keywords:Boiler;Feedbackcontrol;Cascadecontrol七、答辩记录七、答辩记录记录人（签字）：年月日答辩意见及答辩成绩答辩小组教师（签字）：年月日课程设计总评成绩：（指导教师评分×80%+答辩成绩×20%）目录1.锅炉流程························································································11.1工艺流程介绍·······················································································11.2工艺过程简介························································································21.3仪表及操作设备说明··············································································32.控制要求及操作步骤·········································································42.1主要控制要求························································································42.2主要操作步骤与运行指标········································································43.控制系统说明··················································································63.1烟气含氧量的控制··················································································63.2烟气温度的控制·····················································································73.3蒸汽温度的控制·····················································································73.4蒸汽压力的控制·····················································································73.5炉膛压力的控制·····················································································73.6燃料气压的控制·····················································································83.7除氧器的压力的控制···············································································83.8除氧器的液位的控制···············································································83.9汽包水位的控制·····················································································94.自控设备的选型及其计算···································································94.1检测类仪表··························································································94.2分电盘的选型······················································································104.3调节阀的选型·······················································································105.设计施工图说明·············································································115.1仪表管道流程图（见附录1）···································································115.2仪表盘正面布置图（见附录2）································································115.3仪表盘背面电气接线图（见附录3）··························································11附录1·····································································································12附录2·