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1、河北工程大学科信学院2013届本科毕业论文(设计)论文题目:热工炉温度和窑压自动监控系统设计学生姓名:所在院系:科信学院所学专业:自动化导师姓名:刘增环完成时间:2013年5月20日28摘要工业窑炉内工件加热质量的提高与燃烧控制技术有着密切的联系。目前国内普遍采用比例控制、双交叉限幅控制等连续燃烧控制形式,但往往受燃料量的测量和调节这一关键环节的制约,控制效果不佳,近年来国际上出现了脉冲燃烧控制技术,克服了这些弊端,被称为“未来工业炉控制技术的发展方向”关键词:窑炉,脉冲燃烧控制,28DesignbasedonthePLCindustrialsewage
2、processingsystemAbstractInrecentyears,sewagetreatmentplanthasalreadybecomeoneofthemostimportantinfrastructuresineverycity,andespeciallyinsmallandmedium-sizedones,tobuildandexpandsuchplantshasbeenonthelocalgovernments’topagendatoimprovepeoples’life.Withthedevelopmentandimprovement
3、ofautomationtechniqueandcomputertechnology,automationlevelofsewagetreatmentplantshasalsomadeacorrespondingleap.WhilePLChasseriesofmeritssuchas:maturetechnique,fineuniversalproperty,highreliability,flexibletoinstall,convenienttoexpand,excellentcostperformance,etc,whichhaveenabledi
4、tgainamoreandmorewidespreadapplicationinindustrialcontrol.Thispaperwillmainlyintroducethecompositionandfunctionoftheautomaticcontrolsysteminsewagetreatmentplantsandseveralproblemsthatmayoccurinthepracticaluseofthesystemandthepossiblesolutionstothem.Sincethetransformationbyemployi
5、ngPLCcontrolsysteminsewagetreatment,thereliabilityofautomaticcontrolhasbeenadvanced,whichhasnotonlyreducedworkers’workintensity,butalsoimprovedtheoperationalefficiencyofthesewagetreatmentplants,thushasmadethescientificadministrationofmanufacturinginsewagetreatmentplantspossible.K
6、eywords:PLC,Sewagetreatment,SBRreaction28目 录摘要IAbstractII1绪论52系统总体设计12.1总体方案...........................................................2.2电气连接图.........................................................3控制系统设计23.1炉温控制23.2助燃空气压力控制33.3窑压控制43.4点火控制53.5空燃比控制64系统硬件设计74.1阀84.2换热器94.3传感器
7、104.4plc.............................................................4.5变频器.............................................................4.6点火器.........................................................4.7点火变压器........................................................4.8 电动执行器........
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