大型火电厂烟道结构设计运用CAE技术的研究

第2卷第4期2004年12月()JournalofNanjingInstituteofTechnology(NaturalScienceEdition)Vol.2,No.4Dec.,2004:1672-2558(2004)04-0056-07CAE:2004-09-09:(1960-),,,,.E-mail:[e-mail]李明惠1沈涛2(1.金陵科技学院,江苏南京,210001;2.江苏省电力设计院,江苏南京,210024):大型火电厂烟道结构设计中如何使其既节省材料又满足使用要求一直是设计人员关注的问题,本文对大型火电厂烟道结构设计中应用CAE(计算机辅助工程分析)技术,从而实现精准设计进行了研究,并介绍了该技术在扬州电厂200MW机组烟气脱硫装置烟道设计中的运用.:大型火电厂;烟道结构设计;烟气脱硫;精准设计;CAE;有限元法:TM621:TB115:ATheApplicationofCAETechnologyinFlueStructureDesignofLargeThermalPowerPlantsLIMinghui1SHENTao2(1.JinlingInstituteofTechnology,Nanjing210001,China;2.JiangsuElectricPowerDesignInstitute,Nanjing210024,China)Abstract:Oneconcernofthefluestructuredesignersinlargethermalpowerplantsishowtomakethestructurebotheconomicalinmaterialandpracticalinuse.ThepaperproposestoapplyCAEtechnologyinfluestructuredesignoflargethermalpowerplantsinordertoachieveprecisedesign.Takingthe200MWgeneratingsetsofYangzhouPowerPlantasanexample,italsogivesanintroductiontotheapplicationofthetechnologyinthefluestructuredesignofthesets'fluegasdesulfurizationdevice.Keywords:largethermalpowerplant;fluestructuredesign;fluegasdesulfurization;precisedesign;CAE;finiteelementmethod1,.,;,;,,;,;,,,,,[1].,,,,.CAE(),,200MW.2CAE[2](CAE).,,,[3].,;;,ANSYS.#5,#4,210m[4,5].[6]2.0m2.0m[7].2.1,.,,,,4mm..2.1.1,,,.:(1)X,Y,Z,6;(2);(3).2.1.2,,;.:(1)X,Y,Z,6,,;5724:CAE(2);(3),.2.1.3,,1.:(1)X,Y,Z,3;(2).11886(,)0.01/m6360.0001/m2430.01/m2.22.2.1,,.,.,.,,,,,,.2.2.2,,,.,,X,Y,Z.,.,;,,,.,(1).2.2.3,,.58()200412图1型钢与钢板连接点示意图2.32.3.123.,.图2烟道壁有限元模型图3钢板等效内力图,,.,,.2.3.24.(5),,;,,,.,,,,5924:CAE图4烟道壁有限元模型图5烟道壁钢板等效应力图,.2.4(6),,.图6内撑杆形式图4kPa,2.,,;,,,,,.2/N/m2/N/m2/N/m2/N/m23.86E+073.26E+071.55E+088.37E+063.87E+073.26E+071.53E+081.01E+073.64E+073.24E+071.08E+074.50E+066.71E+076.65E+075.29E+075.26E+07注:烟道的中间段应力分布基本相同,但烟道的入风口附近应力分布较烟道中间段略有差别,故表中同时列出了烟道构件的最大应力值和烟道中间段的应力值.2.5,,,.60()200412378,;(4kPa).3/N/N/m2/N/m2/N/m2/N/m220001.93E+071.63E+077.73E+065.23E+0640003.86E+073.26E+071.55E+071.05E+0780007.73E+076.52E+073.09E+072.09E+07100009.66E+078.15E+073.87E+072.61E+07200001.93E+081.63E+087.73E+075.23E+07300002.90E+082.45E+081.16E+087.84E+07400003.86E+083.26E+081.55E+081.05E+08600005.80E+084.89E+082.32E+081.57E+09图7钢板等效应力与内压力的关系图8加固肋弯曲应力与内压力的关系2.6,,.,,,,3%;6124:CAE,,,4.4/N/m2/N/m2/%/N/m2/N/m2/%3.86E+073.26E+07-1.55E+071.05E+07-14.19E+073.63E+07102.52E+071.84E+077023.82E+073.26E+0711.62E+081.02E+075注:自重1为烟道水平搁置,自重2为烟道垂直搁置.2.7,.,,,,13.7%,,,.3,:(1),,(SHELL)(BEAM)(LINK);(2),,;(3),,;(4);(5),;(6),,.:[1].[J].,2000,16(2):40-45.[2],,.[J].,1998,6:35-38.[3],,.[J].,2001,5(3):137-139.[4].200MW[J].,2003,19(2):17-18.[5].200MW.2001.[6].[M].:,2002.[7].[M].:,1985.[责任编校:胡可乐]62()200412