电厂锅炉高温过热器爆管事故分析

(210008)(212006)[],,,,[]121160t/h199310,199711523694h1997115,4h,(SA213TP304H,57mm8mm)2,91mm,134mm(1)1,018mm,718mm,190mm(2)2,,100mm11/mm-300-200-100/mm+100+200+300/mm616261190606060/%78.876.15.35.35.33,,22CSPSiMnCrNi/%0.0760.0050.0220.411.6018.519.76ASTM213-83/%0.040.100.0300.0400.752.0018.0020.008.0011.004,33b/MPa670646ASTM213-83515ž©1999(2)©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:1:,,,(345)2:,(6)3(63)4(125)5(125)3:,(7)4:,(89)12,,34,62(125)73(250)84(125)94(800)1999(2)žª©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.=b2SDpj=2bS/(DW-S)(1)Pb,MPab,MPaS,mmDpj,mmDW,mm(1)b=Pb(DW-S)/2S(2)217.29MPa,17.29MPa(),:b=Pb(DW-S)2S=51.02MPaJISG4311-81[1],44t/450475500525550575600625650675700725750775800b/MPa388381371360346330311290268243218191164136109[2]55t/399482538593649704760816b/MPa414386366334296241186141b-T(10),600,(),b51MPa850,90510b-T71234,12,,34,900,1300,540,,,:(1);(2)(4h),,,,,,,,,,,,,,,,(62)ž«1999(2)©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[4],,,125,,,,,,,m1111:,19852,1111985(1)3,11()1199141111994:,(58)8(1),900,(2),,,,Ÿ¥1999(2)©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(42)Theenergylossreal-timeanalyseisaimportantdevelopingtrendofpowerplantmodernization.Accordingtotheneedofplanttoachievehighef2ficiencyoperationandmanagement,areal-timeenergylossanalysesystemhasbeendesigned.Thepraticeindicatesthatthissystemiseffectiveinimprovingtheoperationssafetyandeconomyofplant,thusitwouldbegreatadvantageoustospreadthissystem.ASSEMBLYDISTRIBUTEDINTELLIGENTMONITORINGSYSTEMANDITSAPPLICATIONINFAIL2UREDIAGNOSISOFBOILERWATERWALL.CaiJianguoetal(46)Thispaperintroducesacomputer-basedmontioringsystemappliedtothefailurediagnosisofboilerwaterwall.Accordingtotheprinciplesofinter2communicationpattern,thehardwarestructurethatshouldbeorganizedforanoptimumandminimuminstrrmentationsysteminthelightofactualsitrationofunitcanbeelasticallydesigned.Moreover,accordingtothetheoryofsoftwareengineering,asuitofcomputersoftwaresystem,whichpossessesmultifunctionlikedataacquisition&processing,networkprotocal&on-linemonitoring,over-limitalarm&failureanalysisandgraphicdisplay&reportformsprintingetc,hasbeendesigned.Thiscomputersoftwarehasmanyadvantages,suchasfriendlyuserinterfaceandhighporta2bility.ThiscomputermonitoringsystemhasbeensuccessfullyappliedtoPingweiPowerPlant.COMPUTER-BASEDPRODUCTIVEANDMANAGEMENTSYSTEMOFPOWERPLANT.JuLincangetal(49)Accordingtothepresentandfuturedevelopmentofthepowerindustryofourcountry,aproductivemanagementsystemofpowerplanthasbeendeveloped.Theconnectionisbuilttolinkthenetworksofmanagementandproductron,bymeansofwhichtheresourcesintheproductionnetworkcouldbeusedinmanagementnetworkandtheoperatingproccessoftheunitscouldbesuperisedremotely.Areal-timeanalysiscanbemadethenontheeconomicoperationofunitssoastoguidtneiropertion.Andinthemeantime,thegenerationofdifferentstatiaicalreportsissimplified.ELECTRICALCONDUCTIVITYMEASUREMENTOFHIGHPUREWATERBYDYNAMICIMPULSEMETHOD.LiuKaipeietal(51)Afterstudyingthecurrentmethodsusedforelectricconductivitymeasurementofhighpurewater,anewmethodofdynamicimpulesisproposedinthispaper.Withthewidthandampitudeofimpulsesourcechangingwiththemeasurements,thismethodhasabettersolutiontothenegativeef2fectscausedbycapacityandpoliarizationofsensors.DEGRADATIONANALYSISANDANTI-MEASURESFORNON-FLAMMABLEOILUSEDBYANIMPORTED300MWUNITHeJianrong(54)Thispaperdescribesanon-flammableoilsystemanditsoperationofanimported300MWunit.Causesofoildegradationwereanalyzedandan2timeasureswereputforward.SUPERCRITICALTUBEFAILUREANALYSISOFUTILITYBOILERXiaoXiangdongWenJie(56)Thispaperpresentsastudyonsupercriticaltubefailureofautilityboilerandproposessomepreventivemeasuresagainstsuchafailure.ANEWMETHODTODETERMINETHEPARAMETERS