小区变频恒压供水系统设计

恒压供水二级项目1电子电气二级项目项目名称：小区变频恒压供水PLC控制系统设计级别：2013专业：机械设计制造及其自动化组员：漆良文、吴海斌、刘良基、程泳钢指导老师：陈少波、郑志丹2016年6月恒压供水二级项目2小区变频恒压供水PLC控制系统设计摘要：随着中国经济和城市化的快速发展，人民的生活水平不断提高，大量新型的高级住宅小区拔地而起，更高的楼层和更复杂的布局给供水系统提出了更高的要求。根据这一现象，结合学生的实际情况，学校希望以电子电气二级项目这个电气类的综合性项目中的小区变频恒压供水PLC控制系统设计这个课题，让学生亲自了解和学习电气电路的设计过程、PLC及变频调速技术的应用和控制过程，学会用所学的知识去解决实际生活中所面临的工程问题。Abstract:withtherapiddevelopmentofChina'seconomyandurbanization,people'slivingstandardscontinuetoimprove,alargenumberofnewseniorresidentialdistricthavesprungup,thehigherfloorsandmorecomplexlayouttothewatersupplysystemproposedhigherrequirements.Accordingtothisphenomenon,accordingtothestudents'actualsituation,theschoolhopesthatinelectronicandelectricallevel2projectoftheelectricalintegratedprojectsincellfrequencyconstantpressurewatersupply,PLCcontrolsystemdesignedinthispaper.Letthestudentsthemselvestounderstandingandlearningofelectricalcircuitdesignprocess,applicationandcontrolofPLCandfrequencycontroltechnology,learnhowtousetheknowledgetoSolvetheengineeringproblemsinreallife.关键词：PLC组态王仿真设计变频调速Keyword：PLC，Kingview，simulationdesign，variablefrequencyspeed-regulating.恒压供水二级项目3目录一、绪论...........................................................................................................................................41.1工业背景..............................................................................................................................41.2技术发展趋势......................................................................................................................41.3项目设计学习的价值..........................................................................................................4二、技术方案...................................................................................................................................52.1工具软件的选择..................................................................................................................52.1.1PLC的选择.................................................................................................................52.1.2变频器的选型...........................................................................................................62.1.3压力变送器的选型....................................................................................................62.1.4组态王的介绍及选型............................................................................................62.2设计原理...............................................................................................................................72.2.1系统控制原理与概述图...........................................................................................72.2.2电路原理设计图.......................................................................................................82.2.3变频器参数设置.......................................................................................................82.3组态王仿真设计...................................................................................................................92.3.1组态王的通信参数设置...........................................................................................92.3.2新建工程与组态变量.............................................................................................102.3.3组态画面.................................................................................................................122.4PLC程序方案设计..............................................................................................................142.4.1水泵先开先停原则................................................................................................142.4.2传感器标定、PID和系统模型的建立................................................................152.5柜屏的设计........................................................................................................................172.6仿真调试和结果分析........................................................................................................172.6.1先开先停原则的检测............................................................................................172.6.2水压调节实时曲线的获取.....................................................................................18三、小组分工...................................................................................................................................20四、总结...........................................................................................................................................214.1项目总结............................................................................................................................214.2个人总结............................................................................................................................21附录1主电路图附录2控制电路图附录3柜屏图附录4元器件清单附录5符号表和DB块附录6PLC程序附录7组态王命令语言参考文献恒压供水二级项目4一、绪论1.1工业背景随着中国经济以及城市化的不断发展，城市的各类基础设施建设也在不断完善，人民的生活水平和需求不断提高，城市里越来越多的高级住宅小区拔地而起，更高的楼层和更复杂的设计对小区的供水系统提出了更高的要求。长期以来区域的供水系统都是由市政委管网经二次加压和水塔或开天面水池来满足用户的用水需求，传统的恒压供水方式是采用水塔、高水位水池等设施来实现，其控制方式存在精度低、能耗大的缺点。常常出现以下问题：在用水高峰的时间段，水的供给量经常低于需求量，从而出现水压降低、供不应求的现象；在用水量较小的时间段，往往出现水压增高、供过于求的情况，这会造成水资源的浪费，严重的甚至会造成水管的爆