热连轧层流冷却水系统的改造

,,(430083):,,,:;;:TG335.11:B:1008-4371(2005)02-0033-05RevamponLamellarFlowCoolingSystematHotRollingStripMillZENGJiang-hua,WANGYou-fa,YUChang-sheng(EnergySource&PowerCompanyofWISCO,Wuhan430083,China)Abstract:Theproblemsexistinginthelamellarflowcoolingsystemareanalyzedandtocopewiththeproblemsarevampplanisadopted,inwhichthewatercontrolandadjustmentboxandaspeedregulationpumparecooperativelyusedintheoperationandinthemeanwhiletheproblemabouttheinsufficientcapacityofthebearingofthefrequencyvariablemotorissolved.Astheresultstheproductqualityisimprovedandtheenergyconsumptionreducedandthustheneedfornormaloperationisbasicallysatisfied.Keywords:lamellarflowcooling;stabilizedpressure;energysaving:2004-11-23:(1956-),,,.12,()1700mm:P207DN1500,60,,(,),,(50%),,P207,112P-207ABCDE5,13320054321/kV/kW/A/(rmin-1)/Hz/(m3min-1)/kW/m/(rmin-1)/mm/%345011274050B504084174060082P207,MLA-2504DDFV-0,2,,,2.1:,,,,,,,P2073,,P2073,,,,1.216.0mm,P207,2.2P20741m,50m3/min,25m,40m3/min,,,25m,73m3/min(2),,,,243,WISCOTECHNOLOGY2005,43(2)2.3,,2,23,,1,2,,,33.1,,,6060,3s1.5sP207,,,PLC,60,,,0.25MPa,,,,,,,41m25m,(H1/H2=(n1/n2)2),740r/min590r/min740r/min,590r/min:Q1/Q2=n1/n2;H1/H2=(n1/n2)2Q1Q2H1H2n1n2:Q2=Q1n2/n1=Q1590/740=0.797Q1H2=H1(n2/n1)2=H1(590/740)2=0.636H1,2590r/min2Q1/(m3min-1)H1/mQ2/(m3min-1)H2/m1048.57.9730.8204615.9429.26304423.9127.98404331.8827.35504139.8526.08603647.8222.97027.555.7917.49,,280kW590r/min380V(3)3/kV/kW/A/(rmin-1)/Hz/(m3min-1)/kW/m/(rmin-1)/mm/%380280545.559050B422262559060076,,3,2532005432,,,,,,23.23.2.12001,3kV380V,,,3,,,,12,,,,,21,,3.2.2,(1)P207,,,,,,,(2),46230590r/min,100,:2100kg,1500kg,:F=H(D02-d2)/4=4364kg,=1.0103kg/m3)H,H=25mD0,D0=0.48md,d=0.09m:C=(fhff/fnft)PC,C=18467kgfhfn,fn=0.384ft,ft=1.0ff,ff=1.2P,P=7964kg:fh=Cfnft/(ffP)=0.742Lh205h,,3.2.3(1),,:,,,(3)363,WISCOTECHNOLOGY2005,43(2)(2),,Lh10000h,fh=2.46ff=1.2fn=0.423ft=1.0P=5864kgC=(fhff/fnft)P=40923kgC59200kg9039330Co123200kg1300r/min(5864kg)(590r/min)(3)46230,fh=2.71ff=1.2fn=0.384ft=1.0C=(fhff/(fnft))P=17784kg4623018467kg,Co23067kg1600r/min(2100kg)(590r/min)2,20041,,P207,4(1),,,,(2),,,,,,(29):(1)60Si2MnA,50HRC[2](2)(3),,,,3,4,,,,,,,:[1].[M].:,1988.[2].[M].:,2001.732005432