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1、外文翻译PLCinsteamboilersteamdrumfluidpositionPIDcontrolsystemappliedanalysis1introductionTheindustrysteamboilersteamdrumwatermonitordutyisthecontrolcausesitforthewatercurrentcapacitywiththetranspirationratemaintenancedynamicalequilibrium,maintainsthesteamdrumwaterlevelinthecraftpermissionscope,is
2、guaranteestheboilersafetyinproductionmovementtheessentialcondition,alsoisoneofboilerregularproductionmovementmajortargetsorquotas.Ifthewaterlevelexcessivelyishigh,affectsthesoftdrinkseparationtheeffect,theusewasmadtheequipmentbreaksdown;Butthewaterlevelexcessivelylowcandestroythesoftdrinkcircu
3、lation,isseriouswhencausestheexplosionofaboiler,thereforetheboilersteamdrumwaterlevelmuststrictlycontrol.Inordertoguaranteetheboilertoproducestable,reliableandtheeconomicalmovement,wedesignedusetheperformancetobeadvancedtheboilerPIDautomaticcontrolsystemwhichforevergreatautomaticequipmentandso
4、onFBs-PLC,frequencyconversionvelometer,computerapplicationwillcompose.Thiscontrolsystemthroughexaminationwatervaporpressure,temperature,movementphysicalquantityandsoonsteamdrumfluidposition,inmovementprocessentireautomaticcontrol,hasguaranteedtheindustryboilersecuritystablehighlyeffectivemovem
5、ent.2industriesboilersrelatedcraftintroductionThesteamboileristhefactoriesandminesimportantpowerequipment,itsdutyisthesuppliesqualifiedstablesteam,satisfiestheloadtheneed.Therefore,boilerproductionprocesseachmainparameterallmuststrictlycontrol.Butholdstheverygreatproportionusingtheafterheatgas
6、astheheatchangemediumafterheatboilerinthenation,itsenergyconservationfallsconsumestheeffectespeciallytobeobvious.Somechemicalplantsulfuricacidafterheatboileristhefurnacegaswhichcomesoutusingtheebullitionstove(mainlyisSO2)thehyperpyrexia,takesitastheheatchangeobject,throughafterheatboilervice-m
7、id-productionpressuresteamforeachproductionbranchfactoryuse,alsohasguaranteedtheproductionneed,alsohadachievedtheenergyconservationfallsthegoalwhichconsumes.Theboilerisamorecomplexcontrolledmember,providesthequalifiedsteamfortheguarante