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外文翻译--可编程控制技术在船用锅炉控制系统中的应用.doc

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外文翻译--可编程控制技术在船用锅炉控制系统中的应用.doc

1TheapplicationofPLCtechniqueinthecontrolofmarineboilersProgrammableforewordcontroller,IscalledPCorPLC,ItappearscausesthecontroldomainfacedwithatechnicaltransformationTaketherelayasthefoundationengineroomcontroldevicestructurecomplex,thecomponentaremany,Thereliabilityisbad,ThebreakdownsometimesoccursThecurrentourcountryshipsusetheimportcompletesetcontroldevice,Itsfunctionconsummates,Thereliabilityisalsohigh,ButthepriceisexpensiveNumberyearago,IuseimportPLCamthecontroller,Owndesignthehardware,Establishmentcontrolprocedure,DevelopssuccessfullythePCGCprogrammableboilercombustioncontrolinstallment,SubstitutesfortheEnglishHAMWORTHYCorporationproductInthenearfuturethesimilarproductwillcomparewiththiscompany,Performancequite,Thepriceonlyisits12.513.4year,AltogetherhasPCGCtoinstall12setsinDazing414andsoon6Stripoiltankersolidshipuse,ExperiencestheSouthChinaSeastormandthenearly70℃hightemperatureadversecircumstancetests,Movesgood,DoesnothaveabreakdownTheexperienceindicated,Introducestheminorityessentialcomponent,Accordingtoconcretecontrolsystemrequest,Designstheappropriatesoftwareandthenecessaryhardware,Istheshipstechnologicaltransformationsandtheequipmentdispositiongoodmeans1systemcompositionThesystemiscomposedbybelowseveralpartsProgrammableforewordcontrollerPCPowersourcePSExaminationunitCooperationunitOBActuationunitMDisplaymonitorIBAuxiliaryrelayunitJBLinebankL,Likechart1showsThefirstsixpartsarethecontroldevicebasiccompositionThisinstallmentadditionallybuildsauxiliaryrelayunitJBincludingfour8portsintermediaterelayJ1,J2,J3andJ4and12portslightcontrolsrelayJGC.Whenthecontrolleroutputmustactuatethehighpowerload,NeedstocarryonthevoltageorthepowerconversionthroughtheintermediaterelayTheintermediaterelaybesidescompletesthehostwhichitundertakestocontrolthefunction,Alsoprovidesmanyviceauxiliaryports,Mayusefortheinterconnectionrelatedequipmentorputthroughtheconditionindicatinglamp,DoesthismaysavethehosttocontroltheunitthehardwareresourcesAfterestablishmentlinebank,Thepowersource,thePCboard,examinethecomponent,carriesoutthecomponent,operatesthebutton,thedisplaylampandsoonthecompletecontactalllinkstothelinebankplugin,Thisfortheequipmentsetup,theserviceandthesearchbreakdownhasprovidedtheconvenienceSystemeachpart2ofcompositionsandconnection。2Systemscontrolsrequest2.1Burningmanagementcontrol1FueloilchoiceThefuelmaychoosetheheavyoilorthelightoilIfchoiceheavyoil,Theoiltemperaturemustin80℃above,ThesidecancarryonburningTheoiltemperatureislowerthan80℃,Thenblowingout,Andthestartheatsuptheinstallmenttoheatuptotheheavyoil2CombustioncontrolAccordingtothestart,frontsweepsthegas,theignition,opensthe1sprayhole,opensthe2sprayholetheordertostartboilerburningAfterclosesthe2sprayhole,closestheorderblowingoutwhichthe1sprayhole,sweepswasmad3SteampressureintermittentcontrolAccordingtoboilersteampressurepANDgatelimitingvaluep10.7MPa,p2approximately0.6MPacontrolstwosprayholesapproximatelytheworkWhenpp1,1,the2sprayholeclosesWhenp1pp2,The1sprayholealoneworksWhenp2p,1,the2sprayholeopens。4Boilerwatermonitortheboilerwaterlevelusesthepairofpositioncontrolmode,whichknewverywell,Therefore,doesnotgiverelatesindetail2.2Interconnectionprotections1SteamoverpressureinterconnectionThesteampressurearrivesreportstothepolicethresholdvaluep0approximatelytime0.72MPa,Sendsoutthesteamoverpressurethewarning,Blowingout,Andshutsofftheloadpowersource,Stopstoallexecutionscomponentpowersupply2TheboilerwaterlevelreportstothepoliceTheestablishmenthighreportstothepolicethewaterlevelandthelowestdangerwarningwaterlevelWhencontrolsmalfunctions,Thewaterlevelsurpassesreportstothepolicethewaterlevel,Thensendsoutthehighwatermarktoreporttothepolice,AndshutsoffthefeedpumpelectricmotorpowersourceWhenthewaterlevelislowerthanthedangerwarningwaterlevel,Thensendsoutthelowwaterleveltoreporttothepolice,Boilerblowingout。3TheemergencyblowingoutprotectsWhenthecollectioncontrolsTaiwantohavetheblowingouttoorder,Thensendsouttheemergencyblowingoutthewarning,Boilerblowingout4HeavyoiltemperaturecontrolinterconnectionWhenchoiceheavyoil,Theoiltemperatureishigherthan80℃procedurestobeabletomoveTheoiltemperature3lowlyislowerthanthisvalue,Sendsoutthewarning,Boilerblowingout5FlamesurveillanceunusualinterconnectionWhenappearstheignitiondefeat,themidwayflameoutortheburningconditionworsening,Sendsouttheflamesurveillancetobeunusualthewarning,Boilerblowingout6Manual,automaticoperationinterconnectiononlywhencutstheswitchtosetmanuallyisautomatictheposition,onlythenallowscarriesonmanuallyisautomaticalloperations7The1sprayholedoesnotwork,Ortheairthrottlehasnotstartedinabigway,The2sprayholedoesnotworkandsoon3HardwaredesignsThehardwaredesignmainlyrevolvesthesystemthereliabilityandtheconsummationitsfunctiontwogoalcarrieson3.1PCshapingTheprogrammableforewordcontrolleruses,theexcellentcraftmanufactureadvanced,itsreliabilityisthegenerallaborcontrolsthemicrocomputer46todouble,ThereforeshouldstressfromthecontrolfunctionanglechoosesPC.Regardingthesingleplane,themediumscale,useinguaranteeingtheboilersafeoperationtheautomaticcontrolsystem,Toconservesenergythegoaltobepossiblenottoconsider,ThereforedoesnotneedthePIDcontrolfunctionSuchsystembyconditioncontrol,sequentialcontrolprimarily,Bytheswitchquantitylogicoperation,thetime,countsisinthemajority,Toaspecttheandsooncomponentrunningrateperformancedoesnothavethespecialrequest,ThereforemayactaccordingtotheproceduretoneedthecapacityIOportnumberandmemorysizemakesthePCshapingThestoragecapacityprocedurestepmay∑IOmaketheestimateaccordingtoempiricalformulaQ610,Iftheuserprogramisnotbig,SavesTheaccumulatorcapacitydemandiseasytosatisfyThissystemaltogethermustinputtheport,outputporteach14ifincreaseboilerwatermonitorfunction,Mustagainincreasetheinput,outputporteach4,ThereforeusesMitsubishiCorporationF130MRorF140MRisthecontrollerF130MRisthesubminiatureprogrammableforewordcontroller,Itsinput,outputstheportwithPCmachinetoassembleintogether,DoesnotneedtochoosetheIOmoduleagainF1seriesPCdoesnothavebreakdowntimeintervalMTBFis300,000hours,Themutable055℃,Work15℃65℃,Stock,Bearsthevibration,theimpactconformstoJISC0911,theC0912standard,Adoptsthepowersourceprotection,thesupplyvoltagesurveillance,theinstantaneouspowercut4compensates,measureandsoonantileveldisturbance,ThereliabilityandtheantjammingabilityareveryhighItalsohasmakesamistakefromthediagnosisability,Includingcirculartelegramdiagnosis,proceduremonitoringdeviceWatchdogandEOL,MayguaranteethecorrespondenceandtheprocedureexecutionaccuracyF130MRhasinputport16,Outputsport14,CansatisfytheprocedureexactlytheneedWhentheexpansionprocedurefunctionalneedincreasestheIOport,Maythroughaffixtheexpansionlist3.2PowersourcesprotectionsandantjammingAlthoughPChasthegoodpowersourceadaptiveness,Alsoshouldtakethemeasurefromtheelectricalpowersystem,Reducesintheinstallmentpowersupplyasfaraspossiblethedisturbance,theundulation,owespresses,theinstantaneoushighpressuretothesystemtheinfluenceTherefore,UsesintheelectricalpowersystemSeparationpowersourcepowersupply,insulatingtransformerandpowerfailureprotectorPCmachine,theinputcircuitandtheoutputcircuitbyseparatethepowersource,throughtheinsulatingtransformerpowersupplyInsulatingtransformershieldlevelgoodearth,ThesecondaryoutputusesthetwistedpairlineThesemeasuresregardingsuppressintheelectricalnetworkandmixintheinputoutputcircuitthedisturbancetocausetheproceduredisoperationtohavethegoodeffectTheinsulatingtransformerusesthehighqualityhighmagneticfluxdensitynottohavecutsthecircularcrosssectioncore,Losesslightly,EnabletheequipmentantivoltageundulationtheabilitytoobtaintheenhancementFrontendtheoutputcircuitpowersourcehasalsoestablishedtheemergencypowerfailureswitch,Whenhastheemergencycase,Maythedump,Protectionsystemsecurity3.3IOallocationandexteriorcircuitdesignControlsystembyPCmachineandinputandoutputcircuitconnectionconstitution,EachpartindependentlysuppliespowerbyelectricalnetworkPS,Seeschart1.TheinputcircuitdividestheexaminationinputcircuitandtheoperationinputcircuittwokindsTheexaminationinputcircuitreceivesthelighttocontrolthelightwhichthetubeandthesensorcontrolstocontroltheswitchandmagneticcontactorG,Sii1,2,AndPCinputportconnection,PotThestoveconditioninformationfeedbackgivesPC.Operationinputcircuitbutton,changeoverswitchandsoonandPCinputportconnection,ToPCtransferoperationorderInthecontrolsystemmovementfixedtimeandthesteampressure,thetemperatureandsoontheentiredefinitevaluereadsinPCbytheprogramming,

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