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1、本科毕业设计含油污水过滤流程的PLC控制设计34摘要油田污水主要包括原油脱出水(又名油田采出水)、钻井污水及站内其它类型的含油污水。油田污水的处理依据油田生产、环境等因素可以有多种方式。为了实现油田长期高产稳产,得到较高的采收率,需要把油田污水或其他水源经过严格处理然后回注到油田中去。处理后根据当地环境要求排放。本系统采用CQMI系列的PLC,对含油污水处理的沉降和过滤过程进行控制。该系统可靠性高,抗干扰能力强。对于设备最多,对污水处理质量影响最大,控制流程最复杂的加药及过滤系统,论文中详细的提出了含油污水过滤的
2、PLC控制系统实现方案,并结合需求分析详细论证了各个控制功能及系统的控制目标。根据设计内容和设计要求绘制了合理的符合设计标准的工艺流程图。在控制要求方面,对于沉降罐和过滤罐都作出了可行性的分析。根据过滤系统的工艺流程来建立精准的控制系统。本设计对过滤流程控制系统的PLC进行选型,资源进行分配。在模块选择方面包括了电源模块CQM1-PA206,CPU模块CQM1-CPU41-E。设计了PLC程序等。实际应用表明,该系统操作简单,实用,功能齐全,对于含油污水滤处理有一定的参考价值。关键词:过滤;PLC;控制系统34A
3、bstractMainlyincludescrudeoilfieldwateremergencewater(alsonamedoilfieldproducedwater),drillingsewageandstandinsideothertypesofoilywater.Oilfieldsewageprocessingbasisoilfieldproduction,environmentalfactorscanhaveavarietyofways.Inordertoachievehighandstableoil,
4、getahigherlong-termrecoveryoftheoilfield,needwaterorothersourcethroughstricttreatmentandthenbacktonotetheoilfield.Accordingtothelocalenvironmentalemission,ThesystemUSEStoCQMIseriesofPLC,thesettlementofoilywastewatertreatmentandfiltrationprocesscontrol.Thesyst
5、emhashighreliabilityandanti-interferenceability.Accordingtothedesigncontentanddesignrequirementsmappedthereasonablecomplywiththedesignstandardprocessflowdiagram.Inthecontrolrequirementsforsettlement,GolvaGuanallmadethecansandthefeasibilityanalysis.Thedesignof
6、thecontrolsystemoffiltration,processselectionofPLC,resourcesallocation.Inmoduleselectionaspects,includingthepowermodule,theCPUmodulePA206CQM1-CQM1-CPU41-E.DesignanddebugPLCprogram,etc.Accordingtothetechnologicalprocess,filtrationsystemtoestablishprecisecontro
7、lsystem.ThepaperdetailedforwardoilywaterfiltrationPLCcontrolsystemisintroduced,andcombinedwithdemandanalysisdemonstratedindetailvariouscontrolfunctionandsystemcontroltarget,alsoputforwardaccordingtoeachprocesssoftwaremoduleofPLC.Formost,ofthesewagetreatmenteq
8、uipment,controlprocessqualitybiggestinfluenceofthemostcomplexdosingandfilteringsubsystem,thisthesisproposesasetofeffectivesolutions.Practicalapplicationshowsthatthesystemoperationsimple,p