重庆科创职业学院-PLC变频调速恒压供水系统的设计

重庆科技学院高等教育自学考试本科毕业论文中文摘要I重庆科技学院高等教育自学考试本科毕业论文PLC变频调速恒压供水系统的设计考生姓名：准考证号：专业层次：本科院（系）：机械与动力工程学院指导教师：职称：讲师重庆科技学院二O一四年四月二十日重庆科技学院高等教育自学考试本科毕业论文中文摘要II摘要随着社会主义市场经济的发展，人们对供水质量和供水系统可靠性的要求不断提高；再加上目前能源紧缺，利用先进的自动化技术、控制技术以及通讯技术，设计高性能、高节能、能适应不同领域的恒压供水系统成为必然的趋势。本论文分析变频恒压供水的原理及系统的组成结构，提出不同的控制方案，通过研究和比较，本论文采用变频器和PLC实现恒压供水和数据传输，然后用数字PID对系统中的恒压控制进行设计。最后对系统的软硬件设计进行了详细的介绍。本论文设计与实现通过MCGS进行数据传输的远程网络巡回监控系统。具体讲述了系统的总体设计与软件的实现，并对系统采取的可靠性措施进行了说明。本论文的变频恒压供水系统已在国内许多实际的供水控制系统中得到应用，并取得稳定可靠的运行效果和良好的节能效果。经实践证明该系统具有高度的可靠性和实时性，极大地提高了供水的质量，并且节省了人力，具有明显的经济效益和社会效益。关键词：变频调速，恒压供水，PLC，监控系统重庆科技学院成人高等自学考试本科论文英文摘要IIIAbstractWiththerapiddevelopmentofsocialisticmarketingeconomy,thereisagrowingdemandforbetterqualityofwatersupplyandhigherreliabilityofsupplysystem.Inaddition,consideringthecurrentcommonenergycrisis,achievingtheschemeofautomatingthewatersupplysystem.Soitisaninevitabletendencytodesignandcreateanenergy-savingconstant-pressurewatersupplysystemofexcellentperformancewiththehelpofadvancedtechniquesofautomation,monitor-controlsystem;andcommunication.Meanwhile,theSystemcanalsoadapttovariouswaterSupplyregions.ThispaperanalyzesthestructureofVFspeedregulatingconstant-pressurewatersupply,andproposesseveralcontrolmethods.Bycarefulstudyandcomparison,PLCandinverter'smethodfitswatersupplysystemanddatatransmissionverywell.FinallythepapershowsthedesignofconstantpressuresupplywatercontrolleraccordingtoPIDdataanddetailedintroductionofitssoftwareandhardware.Inthispaper,theauthordesignsandrealizestheremotemonitorandcontrolsystemthroughMCGS,andthenillustratesitsgeneraldesign,softwareimplementandthemeasuresofpreventabledisturbanceindetails.Thesystem,whichhasinitiallybeencompletedwithreliableperformanceandexcellentenergy-savingeffect,provestopossesshighreliabilityandreal-timequality.Thesystemcannotonlyremarkablyimprovethequalityofwatersupply,butalsoeconomizeonlabor,whichwillsurelybringusbotheconomicandsocialbenefits.KeyWords:VFspeed,constantpressurewatersupply,PLC,monitorandcontrol-systemIV目录中文摘要................................................II英文摘要...............................................III1绪论..................................................11.1城市供水系统的要求...................................................11.2本论文的主要设计工作.................................................22恒压供水系统..........................................42.1变频恒压供水系统......................................................42.2变频恒压供水控制方式的选择...........................................52.3变频构成恒压供水系统的及工作原理......................................72.3.1系统的构成......................................................72.3.2工作原理........................................................82.3.3变频恒压供水系统中加减水泵的条件分析............................92.4主电路接线图........................................................103器件的选型及介绍......................................123.1可编程控制器........................................................123.1.1PLC的特点.....................................................133.1.2PLC的选型.....................................................133.1.3PLC的接线.....................................................133.1.4PLC的I/O地址分配表...........................................143.2变频器..............................................................143.2.1变频器的特点...................................................153.2.2变频器的选型...................................................153.2.3变频器的接线...................................................173.3PID调节器..........................................................173.4压力传感器的接线.....................................................183.5原件表..............................................................194PLC控制及编程........................................204.1PLC控制............................................................204.1.1手动运行.......................................................214.1.2自动运行.......................................................214.2控制系统流程图.......................................................21重庆科技学院高等教育自学考试本科毕业论文目录V4.3控制系统梯形图......................................................225MCGS组态及仿真.......................................235.1MCGS组态软件........................................................245.2建立界面............................................................255.2.1建立窗口.......................................................255.2.2定义数据对象...................................................255.3编辑界面............................................................275.3.1编辑画面.......................................................275.3.2对象元件的选择.................................................275.4MCGS与PLC之间的连接................................................295.4.1添加PLC设备...................................................295.4.2PLC设备属性的设置..............................................30结论....................................................31参考文献................................................32致谢...................................................33论文原创性声明..........................................34重庆科技学院高等教育自学考试本科毕业论文1绪论11绪论1.1城市供水系统的要求众所周知，水是生产生活中不可缺少的重要组成部分，在节水节能己成为时代特征的现实条件