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29420094JournalofPowerEngineeringVol.29No.4Apr.2009:2008208218:2008210221:(19762),,,,,,.(Tel.):13940068183;E2mail:jiangchong@dky.ne.sgcc.com.cn.:100026761(2009)0420335207:TK223.3+1:A:470.30600MW1,2,2,1,2,1,1,1(1.,110006;2.,115007):2600MW.:500MW,M,..2,.:;;;;DistributionCharacteristicsofOutletTemperatureofWorkingMediuminLowerWaterwallof600MWUltra2SupercriticalBoilersJIANGChong1,ZHANGMing2jie2,XUJia2wei2,ZHANGJia2wei1,YANGXu2hong2,ZOUTian2shu1,LENGJie1,WUJing2xing1(1.NortheastElectricPowerResearchInstituteCo.,Ltd.,Shenyang110006,China;2.HuanengYingkouPowerPlant,Yingkou115007,China)Abstract:Thedistributioncharacteristicsofoutlettemperatureofworkingmediuminlowerwaterwalloftwosetsof600MWultra2supercriticalboilersinHuanengYingkouPowerPlantwereanalyzedunderdifferentloads.ResultsshowthatthedistributionofoutlettemperatureofworkingmediumineachsideofboilerlowerwaterwalltaketheshapeofMwhentheloadisabove500MW,andthetemperatureintheregionnearthesideofupstreamburnersisthehighest.Themainreasonforthehighoutlettemperatureoftheworkingmediuminlowerwaterwallisthatthecollocationoftheorificeplugdoesntgivefullplaytocontroldeviations.Accordingtothepresentoperationalcharacteristicsofthetwoboilers,suggestionsareproposedtoimprovetheoperationalsafetyoftheboilerbychangingthemeasuringmethodofthewalltemperature,reducingthedegreeofsuperheating,adjustingtheinnerdiameteroftheorificeplugandsoon.Keywords:ultra2supercriticalboiler;waterwall;outlettemperatureofworkingmedium;orificeplug;distributioncharacteristics,,2..2600MW,,.1342600MW(MitsuibishiHeavyIndustriesCo.,Ltd).HG21795/26.152YM1NOxMACTNOx;;/,;;.(BMCR),1795t/h,605,603.2,..,,,,(DNB)(DRO).39628.6mm6.4mm,SA213T12,161,3802,103.1,2,3.2,,99,1Fig.1Verticalviewofburnercollocation2Fig.2Schematicofzonesarrangedwithwaterwallofrifledtubes3Fig.3Schematicoftrifurcatetube,,.2.14734(3,,863329,,2%),134.471:(1)440MW,,5.134Tab.1Comparisonofoperationaldataandoutlettemperatureofworkingmediuminlowerwaterwallbetweenboilerthreeandboilerfour34/MW520602438500604/(th-1)16401743123614261708/(th-1)223259193.8222.1256.1A/%2.023.343.53B/%4.52.84.33.33ABCDEABCDEABCEABCEFABCEF/601.6601602602602/MPa2523.92224.924.9/331349330321345/MPa3.864.543.23.84.4/598602.5597597600/MPa3.474.1233.64.1/(th-1)00000/(th-1)00000/MPa29.429.925.528.930/277286267279290/MPa29.329.6252830/306313.6300302312/420436.2407411420/MPa26.526.32326.126.9/399.7409.6349.0415.1412.2/385.9391.4349.9399.5397.5/398.0403.4349.9420.1414.8/396.3404.5351.4416.5411.4/394.9402.2350.0412.8409.04Fig.4Outlettemperaturedistributioncurveofworkingmediuminlowerwaterwalloffrontwall5Fig.5Outlettemperaturedistributioncurveofworkingmediuminlowerwaterwallofrearwall7334,:600MW6Fig.6Outlettemperaturedistributioncurveofworkingmediuminlowerwaterwallofleftwall7Fig.7Outlettemperaturedistributioncurveofworkingmediuminlowerwaterwallofrightwall(2)500MW,,4500MW132K,500MW,3451K.(3)500MW,,(40150)1,,(300380)1,1,M.(4),31,450.(5),43.2.28118Fig.8Comparisonbetweenactualoperationalcurvesanddesigncurvesoffrontwall9Fig.9Comparisonbetweenactualoperationalcurvesanddesigncurvesofrearwall10Fig.10Comparisonbetweenactualoperationalcurvesanddesigncurvesofleftwall(13,24,3,4).2.8112:8332911Fig.11Comparisonbetweenactualoperationalcurvesanddesigncurvesofrightwall2Tab.2Comparisonofoutlettemperatureofworkingmediuminlowerwaterwallbetweenactualoperationalvaluesanddesignvalues3600MW4600MWBMCR/C409.6412.2400/C486.3475.3411/C383.3387.3383/K103.188.128/C391.4397.5393/C420.8427.9403/C369.9376.9375/K50.95128/C403.4414.8401/C437.2468.1410/C375.6385.4368/K61.682.741/C404.5411.4400/C442.8456.2408/C368.9375.9364/K73.980.344/C402.2409.0398.5(1),10.5K;(2),.(3),3486.3,41175.3K.(4),3103.1K,28K75.1K.2.2.1,,,,,,,,[1].30MPa,402.47:440MW,,,,,;500MW520MW600MW,,,,,.2.2.2[2].402,,,.34,450,,.,,(12),,,.,,,,,,,.811,,9334,:600MW12Fig.12Schematicofthermalloaddistributioninfurnace,.(40150),,,.,,,,.,,.2.2.3,().,,.,.,,.,,[3].,4(,)315K,435K,43,3,,.,.,.4:,,,30K.,,,,,,AA.2.3384172,,,,.,.500,,540,.,,[4].,,530.413,,.,.,.,,,.,.043293(1)M,,,.(2),.(3).:[1],.[M].:,2004.[2].[J].,1999,26(4):33238.[3].[J].,2006,26(1):38241.[4].[J].,2006(3):22224.(329):Z.S.Spakovszky,.:[1]DEANRC,SENOOY.Rotatingwakesinvanelessdiffuser[J].ASMEJournalofBasicEngineering,1960,82(4):5632574.[2]INOUEM,CUMPSTYNA.Smallperturbationa2nalysisofnonuniformrotatingdisturbancesinavane2lessdiffuser[J].ASMEJournalofEngineeringforPower,1978,100(4):7112721.[3],,,.[J].,2007,41(9):151821521.[4]SPAKOVSZKYZS.Applicationofaxialandradialcompresordynamicsystemmodeling[D].DepartmentofAeronauticsandAstronautics,MIT,Cambridge:MA,2001.[5]SPAKOVSZKYZS.Backwardtravellingrotatingstallwavesincentrifugalcompressors[J].ASMEJournalofTurbomachinery,2004,126(1):1212.[6]SENOOY,ISHIDAM.Behaviorofseverelyasym2metricflowinavanelessdiffuser[J].ASMEJournalofEngineeringforPower,1975,97(3):3752387.[7],,,.[J].,2006,26(6):8492853.2,,,,(200240):2.,,ASME.,,2.1434,:600MW