双恒压无塔供水系统

论文题目：双恒压无塔供水系统专业：机械设计制造及其自动化专业本科生：（签名）_____________指导教师:（签名）_____________摘要城市供水系统的优劣会直接影响到供水的质量。采用传统的继电器控制的方式给城市高层建筑供水，可靠性差、效率低，供水质量得不到保障。本文在研究了供水控制系统发展现状的基础上，针对以上问题设计了一套以PLC作为控制核心的生活/消防双恒压无塔供水系统。本文主要完成的工作如下：1）提出了双恒压无塔供水系统的组成结构及工作原理；2）对供水控制系统进行了硬件设计和软件设计；3）绘制了电气原理图及接线图。包括：电气控制系统主电路图、控制电路图、PLC硬件接线图等；4）编制了系统程序并对程序进行模拟调试，分析总结了程序运行的结果。关键词：PLC双恒压供水系统Subject:DoubleConstant-pressuresystemwithoutwatertowerAbstractThemeritsofthecitywatersupplysystemwilldirectlyaffectthequalityofthewatersupply.Usingconventionalrelaycontrolledmannertourbanhigh-risebuildingwatersupply,poorreliability,lowefficiency,waterqualitycannotbeguaranteed.Basedonthestudyofthewatersupplycontrolsystemdevelopmentstatus,basedontheaboveproblemsdevisedbyPLCasthecontrolcoreoflife/firedoubleconstantwatertowersystem.Inthispaper,theworkaccomplishedasfollows:1)proposeadualconstantpressurewatertowersystemstructureandworkingprinciple;2)thewatersupplycontrolsystemhardwareandsoftwaredesign;3)drawselectricalschematicsandwiringdiagrams.Include:electricalcontrolsystemmaincircuitandcontrolcircuit,PLChardwarewiringdiagram;4)thepreparationofasystematicprogramtosimulateanddebugprograms,analyzesandsummarizestheresultsofrunning.Keywords:PLCDoubleConstant-pressureWaterSupply目录摘要....................................................................................................................................................................I1绪论...............................................................................................................................................................51.1课题研究的背景及其意义.................................................................................................................51.2PLC控制系统及恒压供水系统发展现状.........................................................................................51.3论文主要研究工作及组织结构.........................................................................................................72PLC技术介绍................................................................................................................错误!未定义书签。2.1PLC定义.............................................................................................................错误!未定义书签。2.2PLC的分类及特点..............................................................................................错误!未定义书签。2.3PLC与其它典型控制系统的区别......................................................................错误!未定义书签。2.4PLC的组成与工作原理......................................................................................错误!未定义书签。2.5编程语言介绍......................................................................................................错误!未定义书签。3系统设计........................................................................................................................错误!未定义书签。3.1双恒压供水系统的构成及工作原理..................................................................错误!未定义书签。3.2PLC的选型及I/O地址分配..............................................................................错误!未定义书签。3.2.1PLC的选型...............................................................................................错误!未定义书签。3.2.2I/O地址分配.............................................................................................错误!未定义书签。3.3电气控制系统原理图..........................................................................................错误!未定义书签。3.3.1电气控制系统主电路...............................................................................错误!未定义书签。3.3.2电气控制系统控制电路...........................................................................错误!未定义书签。3.3.3PLC硬件接线图.......................................................................................错误!未定义书签。3.4系统的程序设计..................................................................................................错误!未定义书签。3.4.1程序流程图..............................................................................................错误!未定义书签。3.4.2程序编制..................................................................................................错误!未定义书签。3.4.3系统实验程序的仿真与运行结果分析...................................................错误!未定义书签。4总结与展望....................................................................................................................错误!未定义书签。4.1总结.....................................................................................................................错误!未定义书签。4.2展望.....................................................................................................................错误!未定义书签。致谢....................................................................................................................................错误!未定义书签。参考文献............................................................................................................................错误!未定义书签。附录....................................................................................................................................错误!未定义书签。1绪论1.1课题研究的背景及其意义本课题主要研究基于PLC控制的供水系统。随着经济社会的发展，国家对能源的需求越来越大。水是不可或缺的重要资源，水资源短缺对国家的发展有很大的制约。我国的水电资源都非常短缺，国家一直大力提倡节能减排，因而合理的做好节能减排，已是摆在人们面前很迫切的工作。长期以来我国在各种需要用水的