攀枝花学院本科毕业设计（论文）双恒压无塔供水控制系统学生姓名：青涛学生学号：200910503075院（系）：电气信息工程学院年级专业：2009级自动化指导教师：陶文英副教授助理指导教师：二〇一三年六月攀枝花学院本科毕业设计（论文）摘要摘要该毕业设计对环保、节能、自动补压型给水设备作了介绍。从节能科技的实践出发，阐述了双恒压无塔供水系统在给高楼供水设备中的应用。以PLC电路控制方式，介绍了智能水压控制系统的工作原理及PLC控制系统。在分析水压控制的工作流程的基础上，给出了PLC控制系统的硬件和软件设计。智能水压控制系统的基本控制策略是：采用电动机调速装置与可编程控制器（PLC）构成控制系统，进行优化控制，完成供水压力的恒定控制，当管网流量变化来达到稳定的供水压力和节约电能。系统的控制目标是总泵的出口压力、系统设定的压力值和反馈给水压力实际值进行了比较。处理后的差值输入逆变器，发出控制指令，控制泵电动机的投运台数和运行变量泵电动机的转速，从而达到给水总管压力稳定在设定的压力值上。关键词：PLC控制器，压力传感器，变频器PID运算，双恒压供水。I攀枝花学院本科毕业设计（论文）ABSTRACTABSTRACTThegraduationdesignofenvironmentalprotection,energysaving,automatictypepressurefeedwaterequipmentareintroduced.Startingfromthepracticeofenergysavingtechnology,andexpoundsthedoubleconstantpressurenotowerwatersupplysystemforhigh-risebuildingswatersupplyequipmentapplication.CircuitwithPLCcontrolmethod,thispaperintroducestheworkingprincipleofhydrauliccontrolsystemandPLCintelligentcontrolsystem.Onthebasisofanalyzingtheworkingprocessofthehydrauliccontrol,PLCcontrolsystemhardwareandsoftwaredesignaregiven.Intelligenthydraulicpressurecontrolsystemofthebasiccontrolstrategyis:USESmotordrivedeviceandaprogrammablecontroller(PLC)controlsystem,optimizationcontrol,completewaterpressureconstantcontrol,whenthenetworktrafficvariationtoachievestablewatersupplypressureandsavepower.Controlobjectivesofthesystemisalwayspumpoutletpressure,systempressuresetvalueandfeedbackfeedpressurecomparestheactualvalues.Aftertreatmentthedifferencebetweentheinputinverter,sendsoutcontrolinstructions,controlstationsandpumpmotorwasputintooperationofvariablepumpmotorspeed,soastoachievestablewatersupplymainpipepressureonthesetpressurevalue.KeywordsPLCcontroller,pressuresensors,inverterPIDarithmetic,thedoubleconstantpressurewatersupply.II攀枝花学院本科毕业设计（论文）目录目录摘要..................................................................................................................................IABSTRACT....................................................................................................................II1绪论................................................................................................................................11.1选题的意义和背景...........................................................................................................11.2双恒压供水系统简介.....................................................................................................11.3本文的主要内容.............................................................................................................22恒压供水的基本构成....................................................................................................32.1总体概述...........................................................................................................................32.2设计内容..............................................................................
