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1、附录2：外文翻译PLCinsteamboilersteamdrumfluidpositionPIDcontrolsystemappliedanalysis1introductionTheindustrysteamboilersteamdrumwatermonitordutyisthecontrolcausesitforthewatercurrentcapacitywiththetranspirationratemaintenancedynamicalequilibrium,maintainsthesteamdrumwaterlevelinthecraftpermissionscope,isg
2、uaranteestheboilersafetyinproductionmovementtheessentialcondition,alsoisoneofboilerregularproductionmovementmajortargetsorquotas.Ifthewaterlevelexcessivelyishigh,affectsthesoftdrinkseparationtheeffect,theusewasmadtheequipmentbreaksdown;Butthewaterlevelexcessivelylowcandestroythesoftdrinkcirculation
3、,isseriouswhencausestheexplosionofaboiler,thereforetheboilersteamdrumwaterlevelmuststrictlycontrol.Inordertoguaranteetheboilertoproducestable,reliableandtheeconomicalmovement,wedesignedusetheperformancetobeadvancedtheboilerPIDautomaticcontrolsystemwhichforevergreatautomaticequipmentandsoonFBs-PLC,f
4、requencyconversionvelometer,computerapplicationwillcompose.Thiscontrolsystemthroughexaminationwatervaporpressure,temperature,movementphysicalquantityandsoonsteamdrumfluidposition,inmovementprocessentireautomaticcontrol,hasguaranteedtheindustryboilersecuritystablehighlyeffectivemovement.2industriesb
5、oilersrelatedcraftintroductionThesteamboileristhefactoriesandminesimportantpowerequipment,itsdutyisthesuppliesqualifiedstablesteam,satisfiestheloadtheneed.Therefore,boilerproductionprocesseachmainparameterallmuststrictlycontrol.Butholdstheverygreatproportionusingtheafterheatgasastheheatchangemedium
6、afterheatboilerinthenation,itsenergyconservationfallsconsumestheeffectespeciallytobeobvious.Somechemicalplantsulfuricacidafterheatboileristhefurnacegaswhichcomesoutusingtheebullitionstove(mainlyisSO2)thehyperpyrexia,takesitastheheatchangeobject,throughafterheatboilervice-mid-productionpressuresteam
7、foreachproductionbranchfactoryuse,alsohasguaranteedtheproductionneed,alsohadachievedtheenergyconservationfallsthegoalwhichconsumes.Theboilerisamorecomplexcontrolledmember,providesthequalifiedsteamfortheguar
