中英文文献翻译可编程控制技术在船用锅炉控制系统中的应用.docx
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中英文文献翻译可编程控制技术在船用锅炉控制系统中的应用
TheapplicationofPLCtechniqueinthecontrolofmarineboilers
Programmableforewordcontroller,IscalledPCorPLC,ItappearscausesthecontroldomainfacedwithatechnicaltransformationTaketherelayasthefoundationengineroomcontroldevicestructurecomplex,thecomponentaremany,Thereliabilityisbad,ThebreakdownsometimesoccursThecurrentourcountryshipsusetheimportcompletesetcontroldevice,Itsfunctionconsummates,Thereliabilityisalsohigh,ButthepriceisexpensiveNumberyearago,IuseimportPLCamthecontroller,Owndesignthehardware,Establishmentcontrolprocedure,DevelopssuccessfullythePC-GCprogrammableboilercombustioncontrolinstallment,SubstitutesfortheEnglishHAMWORTHYCorporationproductInthenearfuturethesimilarproductwillcomparewiththiscompany,Performancequite,Thepriceonlyisits12.5~13.4year,AltogetherhasPC-GCtoinstall12setsinDazing414andsoon6Stripoiltankersolidshipuse,ExperiencestheSouthChinaSeastormandthenearly70℃hightemperatureadversecircumstancetests,Movesgood,DoesnothaveabreakdownTheexperienceindicated,Introducestheminorityessentialcomponent,Accordingtoconcretecontrolsystemrequest,Designstheappropriatesoftwareandthenecessaryhardware,Istheshipstechnologicaltransformationsandtheequipmentdispositiongoodmeans
1systemcomposition
Thesystemiscomposedbybelowseveralparts:
ProgrammableforewordcontrollerPC;PowersourcePS;ExaminationunitCooperationunitOB;ActuationunitM;DisplaymonitorIB;AuxiliaryrelayunitJB;LinebankL,Likechart1showsThefirstsixpartsarethecontroldevicebasiccompositionThisinstallmentadditionallybuildsauxiliaryrelayunitJBincludingfour8portsintermediaterelayJ1,J2,J3andJ4and12portslightcontrolsrelayJGC.Whenthecontrolleroutputmustactuatethehigh-powerload,NeedstocarryonthevoltageorthepowerconversionthroughtheintermediaterelayTheintermediaterelaybesidescompletesthehostwhichitundertakestocontrolthefunction,Alsoprovidesmanyvice-auxiliaryports,Mayusefortheinterconnectionrelatedequipmentorputthroughtheconditionindicatinglamp,DoesthismaysavethehosttocontroltheunitthehardwareresourcesAfterestablishmentlinebank,Thepowersource,thePCboard,examinethecomponent,carriesoutthecomponent,operatesthebutton,thedisplaylampandsoonthecompletecontactalllinkstothelinebankplugin,Thisfortheequipmentsetup,theserviceandthesearchbreakdownhasprovidedtheconvenienceSystemeachpartofcompositionsandconnection。
2Systemscontrolsrequest
2.1Burningmanagementcontrol
(1)FueloilchoiceThefuelmaychoosetheheavyoilorthelightoilIfchoiceheavyoil,Theoiltemperaturemustin80℃above,ThesidecancarryonburningTheoiltemperatureislowerthan80℃,Thenblowing-out,Andthestartheatsuptheinstallmenttoheatuptotheheavyoil
(2)CombustioncontrolAccordingtothestart,frontsweepsthegas,theignition,opensthe#1sprayhole,opensthe#2sprayholetheordertostartboilerburning;Afterclosesthe#2sprayhole,closestheorderblowing-outwhichthe#1sprayhole,sweepswasmad
(3)SteampressureintermittentcontrolAccordingtoboilersteampressurepANDgatelimitingvaluep1(0.7MPa,p2(approximately0.6MPa)controlstwosprayholesapproximately)theworkWhenp>p1,#1,the#2sprayholecloses;Whenp1>p>p2,The#1sprayholealoneworks;Whenp2>p,#1,the#2sprayholeopens。
(4)Boilerwatermonitortheboilerwaterlevelusesthepairofpositioncontrolmode,whichknewverywell,Therefore,doesnotgiverelatesindetail
2.2Interconnectionprotections
(1)SteamoverpressureinterconnectionThesteampressurearrivesreportstothepolicethresholdvaluep0(approximatelytime0.72MPa),Sendsout"thesteamoverpressure"thewarning,Blowing-out,Andshutsofftheloadpowersource,Stopstoallexecutionscomponentpowersupply
(2)TheboilerwaterlevelreportstothepoliceTheestablishmenthighreportstothepolicethewaterlevelandthelowestdangerwarningwaterlevelWhencontrolsmalfunctions,Thewaterlevelsurpassesreportstothepolicethewaterlevel,Thensendsoutthehighwatermarktoreporttothepolice,AndshutsoffthefeedpumpelectricmotorpowersourceWhenthewaterlevelislowerthanthedangerwarningwaterlevel,Thensendsoutthelowwaterleveltoreporttothepolice,Boilerblowing-out。
(3)Theemergencyblowing-outprotectsWhenthecollectioncontrolsTaiwantohavetheblowing-outtoorder,Thensendsout"theemergencyblowing-out"thewarning,Boilerblowing-out
(4)HeavyoiltemperaturecontrolinterconnectionWhenchoiceheavyoil,Theoiltemperatureishigherthan80℃procedurestobeabletomoveTheoiltemperaturelowlyislowerthanthisvalue,Sendsoutthewarning,Boilerblowing-out
(5)FlamesurveillanceunusualinterconnectionWhenappearstheignitiondefeat,themidwayflameoutortheburningconditionworsening,Sendsout"theflamesurveillancetobeunusual"thewarning,Boilerblowing-out
(6)Manual,automaticoperationinterconnectiononlywhencutstheswitchtoset"manually"("isautomatic")theposition,onlythenallowscarriesonmanually(isautomatic)alloperations
(7)The#1sprayholedoesnotwork,Ortheairthrottlehasnotstartedinabigway,The#2sprayholedoesnotworkandsoon
3Hardwaredesigns
Thehardwaredesignmainlyrevolvesthesystemthereliabilityandtheconsummationitsfunctiontwogoalcarrieson
3.1PCshaping
Theprogrammableforewordcontrolleruses,theexcellentcraftmanufactureadvanced,itsreliabilityisthegenerallaborcontrolsthemicrocomputer4~6todouble,ThereforeshouldstressfromthecontrolfunctionanglechoosesPC.Regardingthesingleplane,themediumscale,useinguaranteeingtheboilersafeoperationtheautomaticcontrolsystem,Toconservesenergythegoaltobepossiblenottoconsider,ThereforedoesnotneedthePIDcontrolfunctionSuchsystembyconditioncontrol,sequentialcontrolprimarily,Bytheswitchquantitylogicoperation,thetime,countsisinthemajority,Toaspecttheandsooncomponentrunningrateperformancedoesnothavethespecialrequest,Thereforemayactaccordingtotheproceduretoneedthecapacity(IOportnumberandmemorysize)makesthePCshapingThestoragecapacity(procedurestep)may)*∑(IO)maketheestimateaccordingtoempiricalformulaQ=6~10,Iftheuserprogramisnotbig,SavesTheaccumulatorcapacitydemandiseasytosatisfyThissystemaltogethermustinputtheport,outputporteach14(ifincreaseboilerwatermonitorfunction,Mustagainincreasetheinput,outputporteach4),ThereforeusesMitsubishiCorporationF1-30MRorF1-40MRisthecontrollerF1-30MRisthesubminiatureprogrammableforewordcontroller,Itsinput,outputstheportwithPCmachinetoassembleintogether,DoesnotneedtochoosetheIOmoduleagainF1seriesPCdoesnothavebreakdowntimeintervalMTBFis300,000hours,Themutable(0~+55℃,Work;-15℃~+65℃,Stock),Bearsthevibration,theimpact(conformstoJISC0911,theC0912standard),Adoptsthepowersourceprotection,thesupplyvoltagesurveillance,theinstantaneouspowercutcompensates,measureandsoonanti-leveldisturbance,ThereliabilityandtheantjammingabilityareveryhighItalsohasmakesamistakefromthediagnosisability,Includingcirculartelegramdiagnosis,proceduremonitoringdevice(Watchdog)andEOL,MayguaranteethecorrespondenceandtheprocedureexecutionaccuracyF1-30MRhasinputport16,Outputsport14,CansatisfytheprocedureexactlytheneedWhentheexpansionprocedurefunctionalneedincreasestheIOport,Maythroughaffixtheexpansionlist
3.2Powersourcesprotectionsandantjamming
AlthoughPChasthegoodpowersourceadaptiveness,Alsoshouldtakethemeasurefromtheelectricalpowersystem,Reducesintheinstallmentpowersupplyasfaraspossiblethedisturbance,theundulation,owespresses,theinstantaneoushighpressuretothesystemtheinfluenceTherefore,UsesintheelectricalpowersystemSeparationpowersourcepowersupply,insulatingtransformerandpowerfailureprotectorPCmachine,theinputcircuitandtheoutputcircuitbyseparatethepowersource,throughtheinsulatingtransformerpowersupplyInsulatingtransformershieldlevelgoodearth,ThesecondaryoutputusesthetwistedpairlineThesemeasuresregardingsuppressintheelectricalnetworkandmixintheinputoutputcircuitthedisturbancetocausetheproceduredisoperationtohavethegoodeffectTheinsulatingtransformerusesthehighqualityhighmagnetic-fluxdensitynottohavecutsthecircularcross-sectioncore,Losesslightly,Enabletheequipmentanti-voltageundulationtheabilitytoobtaintheenhancementFrontendtheoutputcircuitpowersourcehasalsoestablishedtheemergencypowerfailureswitch,Whenhastheemergencycase,Maythedump,Protectionsystemsecurity
3.3IOallocationandexteriorcircuitdesign
ControlsystembyPCmachineandinputandoutputcircuitconnectionconstitution,EachpartindependentlysuppliespowerbyelectricalnetworkPS,Seeschart1.Theinputcircuitdividestheexaminationinputcircuitandtheoperationinputcircuittwokinds:
TheexaminationinputcircuitreceivesthelighttocontrolthelightwhichthetubeandthesensorcontrolstocontroltheswitchandmagneticcontactorG,Si(i=1,2,)AndPCinputportconnection,Pot
ThestoveconditioninformationfeedbackgivesPC.Operationinputcircuitbutton,change-overswitchandsoonandPCinputportconnection,ToPCtransferoperationorderInthecontrolsystemmovementfixedtimeandthesteampressure,thetemperatureand