基于plc控制恒压供水的设计--水泵控制

《基于plc控制恒压供水的设计--水泵控制》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、基于PLC控制恒压供水的设计——水泵控制学生姓名XXX所在系电子工程系专业名称自动化班级XXX学号XXX指导教师XXXXXXXXXXXXXXXXX基于PLC控制恒压供水的设计——水泵控制学生：XXX指导教师：XXX内容摘要：近年来我国中小城市发展迅速，集中用水量急剧增加。在用水量高峰期时供水量普遍不足，造成城市公用管网水压浮动较大。由于每天不同时段用水对供水的水位要求变化较大，仅仅靠供水厂值班人员依据经验进行人工手动调节很难及时有效的达到目的。这种情况造成用水高峰期时水位达不到要求，供水压力不足，用水低峰期时供水水位超标，压力过高，不仅十分浪

2、费能源而且存在事故隐患（例如压力过高容易造成爆管事故）。随着社会的发展和进步，城市高层建筑的供水问题日益突出。一方面要求提高供水质量，不要因为压力的波动造成供水故障；另一方面要求保证供水质量的可靠性和安全性，在发生火灾时能够可靠供水。恒压供水保证了供水的质量，以PLC为主机的控制系统满足了系统的控制功能，提高了系统的可靠性。关键词：PLC恒压供水30BasedonPLCcontrolconstantpressurewatersupplydesign-waterpumpcontrolAbstract：Inrecentyearsourcountr

3、ysmallandmedium-sizedtownandcitiesdevelopmentwasrapid,centralizedwaterconsumptionsharpgrowth.Whenwaterconsumptionpeaktimevolumeofdiversionuniversalinsufficient,causestheurbanpublicpipenetworkhydraulicpressurefluctuationtobebig.Becausethedifferenttimeintervalwaterusedisevery

4、daybigtothewatersupplywaterlevelrequestchange,dependsmerelyforthewaterworksattendantstocarryonthemanualmanualregulationbasedontheexperiencetobeverydifficulteffectivetoservethepurposepromptly.Thiskindofsituationcreateswhenthewaterusedpeakthewaterlevelcannotmeettherequirement

5、s,thewatersupplypressureisinsufficient,whenwaterusedtroughtimesupplieswaterlevelexceedingtheallowedfigure,thepressureisexcessivelyhigh,notonlywastestheenergymoreovertohavetheaccidentpotential(e.g.pressuretobeexcessivelyhigheasilytocreatecartridgeigniteraccident).Alongwithso

6、ciety'sdevelopmentandtheprogress,theurbanhigh-riseconstruction'swatersupplyquestionisdaybydayprominent.Ontheonehandrequeststoimprovethewatersupplyquality,doesnotwant,becausethepressurefluctuationcreatesthewatersupplybreakdown;Ontheotherhandtherequestguaranteewatersupplyqual

7、ity'sreliabilityandthesecurity,inhastimethefirecansupplywaterreliably.Inviewofthesetwoaspect'srequest,thenewwatersupplyandthecontrolsystemariseatthehistoricmoment,thisisthePLCcontrolconstantpressurenon-towerwatersupplysystem.Theconstantpressurewatersupplyhadguaranteedthewat

8、ersupplyquality,asmainengine'scontrolsystemhasenrichedsystem'scontrolfunctiontakeP