DCS控制系统设计(本科生毕业论文)

I碱回收燃烧工段DCS控制系统设计摘要燃烧是造纸过程的一个重要环节，旧的燃烧工段存在许多的缺点。本设计是利用DCS系统对造纸过程中碱回收燃烧工段进行控制。工业实时监控系统是目前研究的热点问题之一，其中生产数据采集的方法和生产数据发布系统的稳定性和高效性更是研究的重点。在该系统中采用西门子的S7300系列CPU模块内置的MPI接口，PLC来对燃烧工段进行控制，并用WinCC5.0来组态一个HMI平台，对该控制系统进行监控。WinCC是一个功能强大的全面开放的监控系统，既可以用来完成小规模的简单过程监控，也可以用来完成复杂的应用。本文详细介绍了如何构建一个高效的基于WinCC软件的工业实时监控系统，本设计运用WinCC组态软件制作出了碱回收燃烧工段的上位机监控画面，通过控制画面可对碱回收燃烧工段的设备进行控制。本设计体现出WinCC软件的多种自动化设备及控制软件集成，具有丰富的设置项目、可视窗口和菜单选项，使用方式灵活，功能齐全。在控制画面中还可以看见趋势曲线等，通过趋势曲线可了解工厂的生产状况，为操作者提供了直观的操作环境。不仅了解了工厂生产线状态，而且提高了工作效率。WinCC能够用于多种用途的控制系统，同时提供嵌入式C语言编程，用户可以通过编辑项目函数和行为来实现特殊的功能。关键词:HMI，燃烧，WinCC，DCSIITheDesignofDCSControlSystemonAlkaliRecoveryCombustionWorkshopSectionABSTRACTThecombustionisanimportantlinkofthedeckleprocess,theoldburnableworksegmentexistsmuchweakness.ThisdesignistomakeuseoftheDCSsystemtocarryonacontroltothealkalirecoverycombustionworksegmentinthedeckleprocess，Supervisedandcontrolsystemwhenindustrywassolidheatbecurrentlytostudytoorderoneoftheproblems，Producethemethodandtheproductiondatathatthedatacollecttoreleasethestabilityofthesystemamongthemandefficientlyisalsothepointoftheresearch.AdopttheS7300seriesCPUmoldpieceofSiemensinthatsystemtoconnectinsidetheMPIplace，ThePLCcomestotheworksegmenttocarryonacontroltothecombustionCounteractWincc5.0cometosetHMIterrace，carryonsupervisiontothatcontrolsystem.TheWinCCisafunctionstrongoverallliberalsupervisionsystem,sincecanusetothesimpleprocesssupervisionofcompletethesmallscale,alsocanusetocompleteacomplicatedapplication.ThisdesignmakeuseofWinCCsoftwareworkalkalitherecoveryburntheworksegmentoftheplaceofhonormachinecontrolappearance,Theequipmentsthatcontrolappearanceandcansrecovertheburnableworksegmenttothealkalicarriesonacontrol.ThebodyappearsvariousautomationequipmentsesandthecontrolsoftwareintegrationoftheWinCCsoftware，HaveabundantconstitutionitemCantheWindowsoptionswithsinglefixedmenuinrestaurant,Useawayvivid，Thefunctioniswell-found.Canalsoseetrendcurveetc.inthecontroltheappearance，Passtheoperationenvironmentthattheappearancecanunderstandtheproductionconditionofthefactorytoprovidetokeepaviewfortheoperation.Notonlyunderstoodtoproduceperiod,Andraiseaworkefficiency.Providethebuilt-inClanguageplaitdistanceinthemeantime，thecustomercanpasstoedittheitemfunctionandbehaviortocarryoutspecialfunction.KEYWORDS：HMI，Combustion，WinCC，DCSIII目录摘要.....................................................................IABSTRACT...............................................................II1绪论...................................................................12DCS系统的简介..........................................................22.1DCS的组成.........................................................22.2DCS系统的发展过程................................................22.3MPI网.............................................................32.4PROFIBUS-DP网络.................................................43燃烧工段的工艺流程......................................................53.1燃烧工段的工艺流程.................................................53.1.1燃烧工段工艺流程..........................................53.1.2现代碱回收炉控制系统的目标................................63.2燃烧工段设备介绍...................................................63.2.1碱回收炉..................................................63.2.2静电除尘器................................................73.2.3圆盘蒸发器................................................73.2.4引风机....................................................73.2.5一、二、三次风的作用......................................73.3本设计采用的方案..................................................84PLC硬件设计............................................................94.1可编程控制器PLC..................................................94.1.1可编程序控制器的基本结构..................................94.1.2可编程控制器的工作原理...................................104.1.3可编程序控制器的特点.....................................104.2硬件设计..........................................................114.2.1PLC模块的安装...........................................114.2.2CPU模块.................................................114.2.3SM321数字量输入模块.....................................134.2.4SM322数字量输出模块.....................................134.2.5SM331模拟量输入模块.....................................134.2.6SM332模拟量输出模块.....................................144.2.7电源模块.................................................14IV4.3传感器............................................................154.4PID算法..........................................................155WinCC组态部分........................................................175.1西门子WinCC简介................................................175.1.1WinCC的主要功能.........................................175.1.2WinCC选件...............................................185.2WinCC组态.......................................................195.2.1创建新项目...............................................195.2.2添加驱动程序与组态变量...................................205.2.3创建变量.................................................225.2.4画面的创建...............................................245.2.5创建动态.................................................265.3组态报警....