资源描述：
《外文翻译---plc在蒸汽锅炉汽包液位pid控制系统的应用分析》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。
1、附录2：外文翻译PLCinsteamboilersteamdrumfluidpositionPIDcontrolsystemappliedanalysis1introductionTheindustrysteamboilersteamdrumwatermonitordutyisthecontrolcausesitforthewatercurrentcapacitywiththetranspirationratemaintenancedynamicalequilibrium,maintainsthesteamdrumwaterlevelinthecraftpermissions
2、cope,isguaranteestheboilersafetyinproductionmovementtheessentialcondition,alsoisoneofboilerregularproductionmovementmajortargetsorquotas.Ifthewaterlevelexcessivelyishigh,affectsthesoftdrinkseparationtheeffect,theusewasmadtheequipmentbreaksdown;Butthewaterlevelexcessivelylowcandestroythesoft
3、drinkcirculation,isseriouswhencausestheexplosionofaboiler,thereforetheboilersteamdrumwaterlevelmuststrictlycontrol.Inordertoguaranteetheboilertoproducestable,reliableandtheeconomicalmovement,wedesignedusetheperformancetobeadvancedtheboilerPIDautomaticcontrolsystemwhichforevergreatautomatice
4、quipmentandsoonFBs-PLC,frequencyconversionvelometer,computerapplicationwillcompose.Thiscontrolsystemthroughexaminationwatervaporpressure,temperature,movementphysicalquantityandsoonsteamdrumfluidposition,inmovementprocessentireautomaticcontrol,hasguaranteedtheindustryboilersecuritystablehigh
5、lyeffectivemovement.2industriesboilersrelatedcraftintroductionThesteamboileristhefactoriesandminesimportantpowerequipment,itsdutyisthesuppliesqualifiedstablesteam,satisfiestheloadtheneed.Therefore,boilerproductionprocesseachmainparameterallmuststrictlycontrol.Butholdstheverygreatproportionu
6、singtheafterheatgasastheheatchangemediumafterheatboilerinthenation,itsenergyconservationfallsconsumestheeffectespeciallytobeobvious.Somechemicalplantsulfuricacidafterheatboileristhefurnacegaswhichcomesoutusingtheebullitionstove(mainlyisSO2)thehyperpyrexia,takesitastheheatchangeobject,throug
7、hafterheatboilervice-mid-productionpressuresteamforeachproductionbranchfactoryuse,alsohasguaranteedtheproductionneed,alsohadachievedtheenergyconservationfallsthegoalwhichconsumes.Theboilerisamorecomplexcontrolledmember,providesthequalifiedsteamfortheguar
