锅炉汽包安全性评定和剩余寿命评估

3310200510EastChinaElectricPowerVol.33No.10Oct.20051,2(1.,030003;2.,200437):,;::TK225:B:100129529(2005)1020063203SecurityandremaininglifeevaluationforboilerdrumsinpowerplantsGUOShuai1,DUANPeng2(1.TaiyuanIronandSteel(Group)Company,Taiyuan030003,China;2.EastChinaElectricPowerTest&ResearchInstitute,Shanghai200437,China)Abstract:Boilerdrumsinpowerplantsaremainlydamagedbythelow2cyclefatigue.Analyzingthestressconditionofboilerdrumsinoperation,itisconsideredthatthepresswithintheworkingmediumandthethermalstresscausedbytemperaturedifferencearethemainfactorsaffectingthelow2cyclefatiguelifeofdrums.Themethodadoptingfiniteel2ementnumericalcalculationsforevaluatingthesecurityandremaininglifeofdrums,withandwithoutdefects,isex2plainedrespectively.Keywords:boilerdrum;low2frequencyfatigue;security;remaininglife;numericalcalculation1,,4,,,,,,380,,,,[1],,,[2],,,,,,22.1,,,,,,©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(750)2005,33(10)[3]:=Kpp+Ktt(1)p(MPa);Kpt;Kt,KK,,,,,,,,,,ADINA,ANSYS,SUPSAP,ALGOR,,,1/4,,112.2,,,,,,TRD301;,[4][4][5],5%,,,,,,[6],,,33.1,,,,(1)ASMEASME.,b552MPa,b793896MPa,371,(2)BS5500BS5500,b688MPa,375(3)TRD301TRD301202003004005006006(4)19Mn519Mn6BHW235,[7];BHW235[8][7]3,ASMETRD3011,;BS5500©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(751),,3.2(1)[9],a2c:…a=aF2(2)F=1.10+5.2(0.5)5acat1.8+ac;=[1+1.464ac1.65]12;t(mm)2a,2c:…a=a2(3)=1+bad+ak,b=[0.42+2.23ac0.8]-1;k=3.3+[1.1+50ac0.8]-1+1.95ac1.5;d(mm)(2),,,(COD)[9]/s1,ac=/[2s(/s)2](4)/s1,ac=/(+s)(5);s;ac;aac,,,n=ac/a(3),,,,,,Paris[10]dadN=A(Ke)n(6)K,N/mm3/2;A,n4,,,,;,,,:[1],,.[J].,1997,16(2):240244.[2].[J].,2001,19(2):4044.[3].[J].,1998(3):78.[4],.[J].,1988(6):1826.[5],,.[J].1997,17(4):217220.[6],.[J].,2002(4):910.[7],,.[J].,1990(5):111.[8],.BHW-35[J].,1990,10(4):4755.[9].CVDA-84.[10],.2[J].,1999(6):18.:2005208226:(19732),,©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.