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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,THEPRICEONLYISITS125134YEAR,ALTOGETHERHASPCGCTOINSTALL12SETSINDAZING414ANDSOON6STRIPOILTANKERSOLIDSHIPUSE,EXPERIENCESTHESOUTHCHINASEASTORMANDTHENEARLY70℃HIGHTEMPERATUREADVERSECIRCUMSTANCETESTS,MOVESGOOD,DOESNOTHAVEABREAKDOWNTHEEXPERIENCEINDICATED,INTRODUCESTHEMINORITYESSENTIALCOMPONENT,ACCORDINGTOCONCRETECONTROLSYSTEMREQUEST,DESIGNSTHEAPPROPRIATESOFTWAREANDTHENECESSARYHARDWARE,ISTHESHIPSTECHNOLOGICALTRANSFORMATIONSANDTHEEQUIPMENTDISPOSITIONGOODMEANS1SYSTEMCOMPOSITIONTHESYSTEMISCOMPOSEDBYBELOWSEVERALPARTSPROGRAMMABLEFOREWORDCONTROLLERPC;POWERSOURCEPS;EXAMINATIONUNITCOOPERATIONUNITOB;ACTUATIONUNITM;DISPLAYMONITORIB;AUXILIARYRELAYUNITJB;LINEBANKL,LIKECHART1SHOWSTHEFIRSTSIXPARTSARETHECONTROLDEVICEBASICCOMPOSITIONTHISINSTALLMENTADDITIONALLYBUILDSAUXILIARYRELAYUNITJBINCLUDINGFOUR8PORTSINTERMEDIATERELAYJ1,J2,J3ANDJ4AND12PORTSLIGHTCONTROLSRELAYJGCWHENTHECONTROLLEROUTPUTMUSTACTUATETHEHIGHPOWERLOAD,NEEDSTOCARRYONTHEVOLTAGEORTHEPOWERCONVERSIONTHROUGHTHEINTERMEDIATERELAYTHEINTERMEDIATERELAYBESIDESCOMPLETESTHEHOSTWHICHITUNDERTAKESTOCONTROLTHEFUNCTION,ALSOPROVIDESMANYVICEAUXILIARYPORTS,MAYUSEFORTHEINTERCONNECTIONRELATEDEQUIPMENTORPUTTHROUGHTHECONDITIONINDICATINGLAMP,DOESTHISMAYSAVETHEHOSTTOCONTROLTHEUNITTHEHARDWARERESOURCESAFTERESTABLISHMENTLINEBANK,THEPOWERSOURCE,THEPCBOARD,EXAMINETHECOMPONENT,CARRIESOUTTHECOMPONENT,OPERATESTHEBUTTON,THEDISPLAYLAMPANDSOONTHECOMPLETECONTACTALLLINKSTOTHELINEBANKPLUGIN,THISFORTHEEQUIPMENTSETUP,THESERVICEANDTHESEARCHBREAKDOWNHASPROVIDEDTHECONVENIENCESYSTEMEACHPART2OFCOMPOSITIONSANDCONNECTION。2SYSTEMSCONTROLSREQUEST21BURNINGMANAGEMENTCONTROL1FUELOILCHOICETHEFUELMAYCHOOSETHEHEAVYOILORTHELIGHTOILIFCHOICEHEAVYOIL,THEOILTEMPERATUREMUSTIN80℃ABOVE,THESIDECANCARRYONBURNINGTHEOILTEMPERATUREISLOWERTHAN80℃,THENBLOWINGOUT,ANDTHESTARTHEATSUPTHEINSTALLMENTTOHEATUPTOTHEHEAVYOIL2COMBUSTIONCONTROLACCORDINGTOTHESTART,FRONTSWEEPSTHEGAS,THEIGNITION,OPENSTHE1SPRAYHOLE,OPENSTHE2SPRAYHOLETHEORDERTOSTARTBOILERBURNING;AFTERCLOSESTHE2SPRAYHOLE,CLOSESTHEORDERBLOWINGOUTWHICHTHE1SPRAYHOLE,SWEEPSWASMAD3STEAMPRESSUREINTERMITTENTCONTROLACCORDINGTOBOILERSTEAMPRESSUREPANDGATELIMITINGVALUEP107MPA,P2APPROXIMATELY06MPACONTROLSTWOSPRAYHOLESAPPROXIMATELYTHEWORKWHENPP1,1,THE2SPRAYHOLECLOSES;WHENP1PP2,THE1SPRAYHOLEALONEWORKS;WHENP2P,1,THE2SPRAYHOLEOPENS。4BOILERWATERMONITORTHEBOILERWATERLEVELUSESTHEPAIROFPOSITIONCONTROLMODE,WHICHKNEWVERYWELL,THEREFORE,DOESNOTGIVERELATESINDETAIL22INTERCONNECTIONPROTECTIONS1STEAMOVERPRESSUREINTERCONNECTIONTHESTEAMPRESSUREARRIVESREPORTSTOTHEPOLICETHRESHOLDVALUEP0APPROXIMATELYTIME072MPA,SENDSOUTTHESTEAMOVERPRESSURETHEWARNING,BLOWINGOUT,ANDSHUTSOFFTHELOADPOWERSOURCE,STOPSTOALLEXECUTIONSCOMPONENTPOWERSUPPLY2THEBOILERWATERLEVELREPORTSTOTHEPOLICETHEESTABLISHMENTHIGHREPORTSTOTHEPOLICETHEWATERLEVELANDTHELOWESTDANGERWARNINGWATERLEVELWHENCONTROLSMALFUNCTIONS,THEWATERLEVELSURPASSESREPORTSTOTHEPOLICETHEWATERLEVEL,THENSENDSOUTTHEHIGHWATERMARKTOREPORTTOTHEPOLICE,ANDSHUTSOFFTHEFEEDPUMPELECTRICMOTORPOWERSOURCEWHENTHEWATERLEVELISLOWERTHANTHEDANGERWARNINGWATERLEVEL,THENSENDSOUTTHELOWWATERLEVELTOREPORTTOTHEPOLICE,BOILERBLOWINGOUT。3THEEMERGENCYBLOWINGOUTPROTECTSWHENTHECOLLECTIONCONTROLSTAIWANTOHAVETHEBLOWINGOUTTOORDER,THENSENDSOUTTHEEMERGENCYBLOWINGOUTTHEWARNING,BOILERBLOWINGOUT4HEAVYOILTEMPERATURECONTROLINTERCONNECTIONWHENCHOICEHEAVYOIL,THEOILTEMPERATUREISHIGHERTHAN80℃PROCEDURESTOBEABLETOMOVETHEOILTEMPERATURE3LOWLYISLOWERTHANTHISVALUE,SENDSOUTTHEWARNING,BOILERBLOWINGOUT5FLAMESURVEILLANCEUNUSUALINTERCONNECTIONWHENAPPEARSTHEIGNITIONDEFEAT,THEMIDWAYFLAMEOUTORTHEBURNINGCONDITIONWORSENING,SENDSOUTTHEFLAMESURVEILLANCETOBEUNUSUALTHEWARNING,BOILERBLOWINGOUT6MANUAL,AUTOMATICOPERATIONINTERCONNECTIONONLYWHENCUTSTHESWITCHTOSETMANUALLYISAUTOMATICTHEPOSITION,ONLYTHENALLOWSCARRIESONMANUALLYISAUTOMATICALLOPERATIONS7THE1SPRAYHOLEDOESNOTWORK,ORTHEAIRTHROTTLEHASNOTSTARTEDINABIGWAY,THE2SPRAYHOLEDOESNOTWORKANDSOON3HARDWAREDESIGNSTHEHARDWAREDESIGNMAINLYREVOLVESTHESYSTEMTHERELIABILITYANDTHECONSUMMATIONITSFUNCTIONTWOGOALCARRIESON31PCSHAPINGTHEPROGRAMMABLEFOREWORDCONTROLLERUSES,THEEXCELLENTCRAFTMANUFACTUREADVANCED,ITSRELIABILITYISTHEGENERALLABORCONTROLSTHEMICROCOMPUTER46TODOUBLE,THEREFORESHOULDSTRESSFROMTHECONTROLFUNCTIONANGLECHOOSESPCREGARDINGTHESINGLEPLANE,THEMEDIUMSCALE,USEINGUARANTEEINGTHEBOILERSAFEOPERATIONTHEAUTOMATICCONTROLSYSTEM,TOCONSERVESENERGYTHEGOALTOBEPOSSIBLENOTTOCONSIDER,THEREFOREDOESNOTNEEDTHEPIDCONTROLFUNCTIONSUCHSYSTEMBYCONDITIONCONTROL,SEQUENTIALCONTROLPRIMARILY,BYTHESWITCHQUANTITYLOGICOPERATION,THETIME,COUNTSISINTHEMAJORITY,TOASPECTTHEANDSOONCOMPONENTRUNNINGRATEPERFORMANCEDOESNOTHAVETHESPECIALREQUEST,THEREFOREMAYACTACCORDINGTOTHEPROCEDURETONEEDTHECAPACITYIOPORTNUMBERANDMEMORYSIZEMAKESTHEPCSHAPINGTHESTORAGECAPACITYPROCEDURESTEPMAY∑IOMAKETHEESTIMATEACCORDINGTOEMPIRICALFORMULAQ610,IFTHEUSERPROGRAMISNOTBIG,SAVESTHEACCUMULATORCAPACITYDEMANDISEASYTOSATISFYTHISSYSTEMALTOGETHERMUSTINPUTTHEPORT,OUTPUTPORTEACH14IFINCREASEBOILERWATERMONITORFUNCTION,MUSTAGAININCREASETHEINPUT,OUTPUTPORTEACH4,THEREFOREUSESMITSUBISHICORPORATIONF130MRORF140MRISTHECONTROLLERF130MRISTHESUBMINIATUREPROGRAMMABLEFOREWORDCONTROLLER,ITSINPUT,OUTPUTSTHEPORTWITHPCMACHINETOASSEMBLEINTOGETHER,DOESNOTNEEDTOCHOOSETHEIOMODULEAGAINF1SERIESPCDOESNOTHAVEBREAKDOWNTIMEINTERVALMTBFIS300,000HOURS,THEMUTABLE055℃,WORK;15℃65℃,STOCK,BEARSTHEVIBRATION,THEIMPACTCONFORMSTOJISC0911,THEC0912STANDARD,ADOPTSTHEPOWERSOURCEPROTECTION,THESUPPLYVOLTAGESURVEILLANCE,THEINSTANTANEOUSPOWERCUT4COMPENSATES,MEASUREANDSOONANTILEVELDISTURBANCE,THERELIABILITYANDTHEANTJAMMINGABILITYAREVERYHIGHITALSOHASMAKESAMISTAKEFROMTHEDIAGNOSISABILITY,INCLUDINGCIRCULARTELEGRAMDIAGNOSIS,PROCEDUREMONITORINGDEVICEWATCHDOGANDEOL,MAYGUARANTEETHECORRESPONDENCEANDTHEPROCEDUREEXECUTIONACCURACYF130MRHASINPUTPORT16,OUTPUTSPORT14,CANSATISFYTHEPROCEDUREEXACTLYTHENEEDWHENTHEEXPANSIONPROCEDUREFUNCTIONALNEEDINCREASESTHEIOPORT,MAYTHROUGHAFFIXTHEEXPANSIONLIST32POWERSOURCESPROTECTIONSANDANTJAMMINGALTHOUGHPCHASTHEGOODPOWERSOURCEADAPTIVENESS,ALSOSHOULDTAKETHEMEASUREFROMTHEELECTRICALPOWERSYSTEM,REDUCESINTHEINSTALLMENTPOWERSUPPLYASFARASPOSSIBLETHEDISTURBANCE,THEUNDULATION,OWESPRESSES,THEINSTANTANEOUSHIGHPRESSURETOTHESYSTEMTHEINFLUENCETHEREFORE,USESINTHEELECTRICALPOWERSYSTEMSEPARATIONPOWERSOURCEPOWERSUPPLY,INSULATINGTRANSFORMERANDPOWERFAILUREPROTECTORPCMACHINE,THEINPUTCIRCUITANDTHEOUTPUTCIRCUITBYSEPARATETHEPOWERSOURCE,THROUGHTHEINSULATINGTRANSFORMERPOWERSUPPLYINSULATINGTRANSFORMERSHIELDLEVELGOODEARTH,THESECONDARYOUTPUTUSESTHETWISTEDPAIRLINETHESEMEASURESREGARDINGSUPPRESSINTHEELECTRICALNETWORKANDMIXINTHEINPUTOUTPUTCIRCUITTHEDISTURBANCETOCAUSETHEPROCEDUREDISOPERATIONTOHAVETHEGOODEFFECTTHEINSULATINGTRANSFORMERUSESTHEHIGHQUALITYHIGHMAGNETICFLUXDENSITYNOTTOHAVECUTSTHECIRCULARCROSSSECTIONCORE,LOSESSLIGHTLY,ENABLETHEEQUIPMENTANTIVOLTAGEUNDULATIONTHEABILITYTOOBTAINTHEENHANCEMENTFRONTENDTHEOUTPUTCIRCUITPOWERSOURCEHASALSOESTABLISHEDTHEEMERGENCYPOWERFAILURESWITCH,WHENHASTHEEMERGENCYCASE,MAYTHEDUMP,PROTECTIONSYSTEMSECURITY33IOALLOCATIONANDEXTERIORCIRCUITDESIGNCONTROLSYSTEMBYPCMACHINEANDINPUTANDOUTPUTCIRCUITCONNECTIONCONSTITUTION,EACHPARTINDEPENDENTLYSUPPLIESPOWERBYELECTRICALNETWORKPS,SEESCHART1THEINPUTCIRCUITDIVIDESTHEEXAMINATIONINPUTCIRCUITANDTHEOPERATIONINPUTCIRCUITTWOKINDSTHEEXAMINATIONINPUTCIRCUITRECEIVESTHELIGHTTOCONTROLTHELIGHTWHICHTHETUBEANDTHESENSORCONTROLSTOCONTROLTHESWITCHANDMAGNETICCONTACTORG,SII1,2,ANDPCINPUTPORTCONNECTION,POTTHESTOVECONDITIONINFORMATIONFEEDBACKGIVESPCOPERATIONINPUTCIRCUITBUTTON,CHANGEOVERSWITCHANDSOONANDPCINPUTPORTCONNECTION,TOPCTRANSFEROPERATIONORDERINTHECONTROLSYSTEMMOVEMENTFIXEDTIMEANDTHESTEAMPRESSURE,THETEMPERATUREANDSOONTHEENTIREDEFINITEVALUEREADSINPCBYTHEPROGRAMMING,

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