I摘要随着社会的发展，各种建筑也在不断地增加，排水系统的好坏会也成为决定一个建筑质量的关键因素，因此排水系统十分重要。对排水泵的控制方式有多种多样，我们需根据不同的要求采用不同的控制方式。民用建筑的排水，主要时用以排除生活污水、溢、漏水和消防废水等。本设计排水系统采用三台排水泵，采用一备两用模式。排水系统由污水集水池，液位器、排水泵组成。正常运行时，两台主泵互为备用，高水位启泵，低水位停泵；如果一定时间内集水池中污水无法排空，第一备用泵投入运行，如发生溢流情况（如存在大量消防废水情况），则发出水位报警，同时投入第二备用泵。以此实现自动和手动控制。关键词：一用两备、互为备用、自动控制。IIIAbstractWiththedevelopmentofsociety,variousbuildingsareconstantlyincreasing,thedrainagesystemwillalsobecomeakeyfactorindeterminingthequalityofabuilding,sothedrainagesystemisveryimportant.Therearemanywaystocontrolthedrainagepump,weneedtousedifferentcontrolaccordingtodifferentrequirements.Drainageofcivilbuilding,mainlyusedtoexcludedomesticsewage,overflow,waterleakageandfirewater.Thedesignofthedrainagesystemusingthreedrainagepumps,usingadual-usemode.Drainagesystemconsistsofsewagepool,liquidlevel,drainagepumpcomponents.Normaloperation,thetwomainpumpsarealternate,highwaterlevelKaipump,lowwaterlevelstoppump;ifacertainperiodoftimethepoolofsewagecannotbeemptied,thefirststandbypumpputintooperation,suchastheoverflowsituation(suchastheexistenceofalargenumberFirewatersituation),thenissuedawaterlevelalarm,whilethesecondstandbypump.Toachieveautomaticandmanualcontrol.Keywords:Onewithtwoequipment,eachotherspare,automaticcontrolIIIII目录1绪论............................................................................................................................11.1项目的意义及应用背景.................................................................................11.1.1民用建筑的排水.........................................................................................11.1.2排水集水池设计要求...................................................................................11.1.3液位器的认识...............................................................................................11.1.4排污泵的认识...............................................................................................21.2排水泵的概述.....................................................................................................31.2.1排水泵的概念...............................................................................................31.2.2排水泵结构...................................................................................................31.2.3排水泵的选型...............................................................................................41.2.4排水泵的工作原理.......................................................................................41.3总体方案设计及要求.........................................................................................41.3.1控制要求.......................................................................................................51.3.2设计控制系统要求.......................................................................................52.控制系统分析与设计...............................................................................................62.1主电路.....................................................................................................
