旋转机械设备常见故障诊断

第18卷第3期湖南工程学院学报Vo1.18.No.320089JournalofHunanInstituteofEngineeringSept.2008:2008-03-04:(1971-),,,:.宋生钰(,810108):旋转机械设备是工业企业常用的设备,对它进行监测和故障诊断,确保设备正常运行或预知设备运行状态是现代设备管理的一项重要内容.分析了旋转机械故障产生机理,对诊断的对象周期诊断点和原理进行了论述,提出了判定标准,对旋转机械故障的判断具有现实的指导作用.:旋转机械;故障;诊断:TH165+.3:A:1671-119X(2008)03-0041-050,.,,,,.,,,,,,,,.1,:(l).,,,.(2).,.,,,.(3).,.,.,,,.,.(4).,,,,,,,,,,.(5).,,,,.,,.21:1.3,,.,,,,,,,,,,...,,,.X(t),,,,2.2-,.3.1.,3.33.2,,,:.4.4(1)2,12,,2;(2)123,50%,,,,4~10;(3),,,;(4);(5),123.3.3.40%,,,.422008..,,,,.:.,,:f=n/60(Hz)(1):fg=D2d11-(d/D)2cos2A2f(Hz)(2)():fb=12(1-dDcosA)f(Hz)(3):fn=12Z(1+dDcosA)f(Hz)(4):fw=12Z(1-dDcosA)f(Hz)(5)n)))D)))d)))()Z)))A))).,,.3.4:.5.5(1),,3~10;(2),;(3)1/2,3/2;(4),;(5),.4,,,,,,,.,,,,,,=/60,,,,,,.5:.:1980rpm,:f=1980/60=33(Hz).:fw=12Z(1-dDcosA)f=12@10@(1-8/65@cos20b)@33=145.92(Hz).:fn=12Z(1+dDcosA)f=12@10@(1+8/65@cos20b)@33=184.09(Hz).:fg=D2d[1-(d/D)2cos2A)f=16.53(Hz):fb=12(1-dDcosA)f=121-8/65@cos20b)@33=14.59(Hz)6.6433:,,278.2(:mm/s)(V)(H)(A)19165121333188VH210121131324158VH(mm/s)711711711ISO2372:,12VH,1,146Hz,2184Hz.,.145.92Hz(146Hz),184.09Hz(184Hz),,1,2,,(9).,,.6,,.,,,,,,,.,,,442008.参考文献[1].[M].,2006:25.[2].[M].,2001.[3].[M].,2001:12-14.[4].()[M].,2000.FailureDiagnoseinRevolvingMechanicalDeviceSONGSheng2yu(QinghaiBranch,ChinaAluminumCo.Ltd,Xining810108,China)Abstract:RevolvingmechanicaldeviceiswidelyusedinIndustrialenterprise.It'simportanttoperformthemonitorandthefailurediagnosissothattheequipmentnormaloperationanditsrunningstatepredicationcanbeguaranteed.Thearticleanalyzesthemechanismofleadingtothebreakdownoftherevolvingme2chanicalequipment.Thediagnosedobject,thecycle,thediagnosispointandtheprinciplearealsodis2cussed.Finally,thestandardisproposed,whichishelpfultojudgethebreakdownoftherevolvingmechani2calequipment.Keywords:revolvingmachinery;Breakdown;diagnosis(上接第12页)参考文献[1],,.[J].,2006,30(18):75-80.[2],,,.[J].,2003,27(22):41-44.[3],.[J].,2005,33(7):21-2549.[4],,,.[J]..2005,33(15):66-70.[5],,,.[J].,2004,24(4):80-84.[6],,,.[J].,2006,26(11):75-81.ANovelApproachonIdentificationofPermanentFaultsforSingle2phaseAuto2reclosureLILing,JINGuo2bin,HUANGShao2ping(CollegeofElect.andInformation,HunanInstituteofEngineering,Xiangtan411101,China)Abstract:Anovelapproachonidentificationoffaulttypeforhighvoltagetransmissionlineispresentedinthispaper.Undertransientfaultsafterthebreakertripping,thecurrentoflinetogroundisdetectedfromthefirstend,whichisasmallcaptivecurrentforinstantaneousfaultsandabiggerelectromagneticcou2plingcurrentforpermanentfaults.Theidentificationoffaulttypeisrealizedbydetectingcurrent.Thismethodiseffectivetojudgethegroundingfaulttypeofsingle2phaseandabletobearsometransitionim2pedance.Itsefficiencyhasbeenshownbysimulationresults.Keywords:single2phaseauto2reclosure;currentdetection;permanentfault;instantaneousfault453: