供暖锅炉变频控制系统设计报告学士学位论文.doc

摘要随着社会经济的飞速发展，城市建设规模的不断扩大，以及人们生活水平的不断提高，对城市生活供暖的用户数量和供暖质量提出了越来越高的要求，因此对于供暖锅炉系统也有了更高层次的要求，利用现代自动控制技术，通过变频器和可编程控制器PLC的运用，实现操作简单、自动化程度高、环境污染少、低能耗、供暖质量高和日常维护费用低的供暖变频锅炉系统。本设计利用现代变频技术和PLC控制技术设计出了一套供暖锅炉变频控制系统。系统中共有6台锅炉，每台锅炉各分配1台炉排、1台鼓风机、1台引风机，将6台锅炉分为两组，其中4台用于工矿企业供暖任务，2台用于居民日常供暖任务，每台炉排电机、引风机、鼓风机各配置1台变频器，每组锅炉系统各分配2台补水泵。4台锅炉系统分配4台循环泵，2台锅炉系统分配2台循环泵，两个循环泵系统均配置2台变频器，循环泵变频控制采用“一拖四”和“一拖二”控制方式。关键词：锅炉PLC变频器电机AbstractWiththerapiddevelopmentofsocialeconomy,cityconstructionscalecontinuestoexpand,andpeople'srisinglivingstandards,putsforwardmoreandmorehighrequesttothecitylifeheatinguserquantityandtheheatingquality,sotheheatingboilersystemisalsorequiredhigherlevel,theuseofmodernautomaticcontroltechnology,thefrequencyconverterandapplicationofprogrammablelogiccontrollerPLC,realizationofsimpleoperation,highdegreeofautomation,lessenvironmentalpollution,lowenergyconsumption,highqualityanddailymaintenanceofheatingheatingboilersystemcostlowfrequency.ThedesignoftheuseofmodernvariablefrequencytechnologyandPLCcontroltechnologytodesignasetofheatingboilercontrolsystem.Systemthereare6boilers,eachboilergrate,thedistributionof1setsof1blowers,1fans,6boilersaredividedintotwogroups,ofwhich4unitsusedinindustrialandminingenterprisesheatingtask,2forhouseholdheatingtasks,eachgratemotor,fan,blowerforeachconfiguration1inverters,thedistributionofeachboilersystem2setsofwaterpumps.Boilersystem4setsofdistributionof4circulatingpumps,boilersystem2setsofdistributionof2circulatingpumps,twocirculatingpumpsystemconfiguration2converters,circulationpumpfrequencycontrolby"four"and"two"controlmode.Keywords:BoilerPLCsensormoto目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc359406265"1.绪论PAGEREF_Toc359406265\h1HYPERLINK\l"_Toc359406266"1.1锅炉系统研究背景PAGEREF_Toc359406266\h1HYPERLINK\l"_Toc359406267"1.2国内锅炉系统现状PAGEREF_Toc359406267\h1HYPERLINK\l"_Toc359406268"1.3锅炉系统研究意义PAGEREF_Toc359406268\h2HYPERLINK\l"_Toc359406269"2.总体方案设计PAGEREF_Toc359406269\h3HYPERLINK\l"_Toc359406270"3.系统硬件设计PAGEREF_Toc35940