过热器再热器壁温在线监测技术在寿命监测中的应用

1,2(1.,200137;2.,200437):,,,,,L2M,,,300MW,:;;;;;:TK223.3:B:100129529(2004)0720005203Theapplicationofsuperheaterandreheateron2linemetaltemperaturemonitoringtechniqueinlifeassessmentLIUFuang2chi1,YANGDong2(1.WaigaoqiaoElectricPowwerCo.Ltd,Shanghai200137;2.EastChinaElectricPowerTest&ResearchInstitute,Shanghai,200437)Abstract:Thehightemperatureheatingsurfacesuchasthesuperheaterandreheaterofthelarge2sizeutilityboilerallexperi2encearelativelyevereworkingcondition.Thefailureoftheboilertubeswilldirectlyimpactthesafeandeconomicoperationoftheboilers.Tubedamageismainlycausedbytheexceedingofthelimittemperatureoftheheatingsurface.Thesuperheaterandreheateron2linemetaltemperaturemonitoringtechniqueusedalimitednumberofmetaltemperaturemeasuringpointssituatedoutsideofthefurnacetocalculateeverytubesectionmetaltemperatureofthewholebundlesinrealtime.Basedonthistechniqueanon2linelifemonitoringmodeloftheheatingsurfacewassetupaccordingtothewell2knownL2Mformulaofthecreepdamageandtheheatingsurfaceon2linelifemonitoringandmanagementsystemwasdevelopedforthe300MWutil2ityboiler.Aneffectivedevicewasthussuggestedfortheimplementationofthesafeoperationandtheconditionbasedmainte2nanceoftheutilityboilers.Keywords:superheater;reheater;metaltemperature;creep;lifeassessment;on2linemonitoring,,,,,,,,,,1,,,,,,L2M:T(C+lg)=(1)(1)C,C1822,20,10,,,32720047EastChinaElectricPowerVol.32No.7July2004©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:,,,,;,,EPRI(1),,,,,,,,,,2,,,:(1),(2),(3),3,,10,,,,,,,:(kJ/kg):ia=KrKhE0dlaDi(qqpa+qfpa+qp1a+qd2a)(2)Kr,Kh;E0,;d,m;la,m;qq,,kJ/m2h;qf,,kJ/m2h;qp,kJ/m2h;qd,kJ/m2h;qa;1a;2a;Di,kg/h;,,(kJ/kg):i=na=1ia(3)6(426)2004,32(7)©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(,):tb=tq+Jqm11++12(4)():twb=tq+Jqm21++12(5)tq,;;J;,m;,kJ/mhK;2,kJ/m2hK;qm,kJ/m2h,Kr,,,,,33.1Windows2000/98,CisualBasic6.0,SQLServer2000;Browser2Server(Web)113.2(1)();;(2),,,,(3)(4)3.3300MW,20036,,,,,,,,,,1,3,60%,15,1296kWh,(20),,,:2004207203:(19532),,,,,7(427)©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.