动力管道水锤激振分析谭平

30220064JournalofNanjingUniversityofScienceandTechnologyVo.l30No.2Apr.2006　:2004-09-27　　:2006-01-23　:(1965-),,,,:,E-mail:[e-mail]。谭　平1,徐　蕾2,凌晓聪2(1.,210096;2.,210024)　:该文利用有限元方法,对动力管道进行了建模,把水锤基本方程计算得出的水锤力作为加载力,计算出了动静态组合工况下管道系统动力响应的位移及转角幅值、约束力及力矩,以及各个水锤激发出来的管系动力响应贡献的系数。从计算结果看出水锤对管道有重要影响,在管道设计时必须加以考虑,最后提出了消除水锤影响的措施。:水锤;管道;振动;控制:TM365,TB123　　:A　　:1005-9830(2006)02-0182-04VibrationofWaterHammerofPowerPipeSystemTANPing1,XULei2,LINGXiao-cong2(1.VibrationCenter,SoutheastUniversity,Nanjing210096,China;2.JiangsuElectricPowerDesignInstitute,Nanjing210024,China)Abstract:ApipesystemmodalissetupwithFMEmethod.Awaterhammerforceissolvedasanexternalforcetobeappliedtothepipesystem.Theamplitudesofthetranslationsandrotations,therestrictionforceandmomentofthepipesystem,theresponsecontributivefactorsofeverywaterhammerarecalculatedoutunderthestaticanddynamicsloadcases.Thecomputationalresultsshowthatthehammerhasinfluencesonthepipesystem.Inthepipesystemdesignphase,itisimportanttotakeintoconsiderationthewaterhammereffec.tSomemeasuresareputforwardaboutthereduc-tionharmfromwaterhammeronthepipesystem.Keywords:waterhammer;pipesystem;vibration;control　　,,,(、、、),。,,[1]。,,,、、,,,,[2]。DOI牶牨牥牣牨牬牨牱牱牤j牣cnki牣牫牪牠牨牫牴牱n牣牪牥牥牰牣牥牪牣牥牨牪147　　　　　　。1　,,,,。,。,2,,,。。,,,,、,1[3]。1　,p0(p0+Δp),ρρ+Dρ,,　ΔH=cv0g(1)(1),v0。ΔH,c,,,c=Eρ,E。,[4]　Hx+1gvt+vgvx+fDv|v|2g=0(2):H(m);f;v(m/s),;g;x,;D。,。2　,2,32.5cm,4MPa。3:10-20210-220,40、110、120、160、190,10、140、180、220、230。210-220,,。2　、、,、。,、、,　EI4ws4+ρl1–v22ws2+2ρl1–v2wst+(ρl1+ρl2)2wt2=0(3):EI,ρl1,ρl2,–v,w,s,t。–vc,,。,、。、,、,,,183　　　　　　　　302。30.9cm,456t/h,,。,2.503MPa、187.699kN。,0.5ms,1/2,。Lc,6,20-30、30-50、50-80、90-110、110-130130-170,1.81、2.44、4.2、4.8、6.7、8.0ms。1303。20、30、50、90、110。6,。3　1301。2,,。2,190-110,20-301。2110-130,20-30、90-1102。390-110110-130,20-30、130-1703。450-80,20-30、130-1704。。44。4　41　/cmDXDYDZ/(°)RXRYRZ401.772.001.270.620.400.65603.901.400.000.290.820.40803.873.445.380.510.580.741003.793.295.700.520.640.481202.993.953.460.390.550.331601.330.760.270.190.070.111902.332.171.260.610.620.602001.751.700.010.480.480.39184147　　　　　　2　CXCYCZ11.41.09-6.1-0.90.050-8011.4-3.100.0-7.10.090-11011.40.920.0-13.59.9110-13011.4-0.3411.8-7.10.0130-17011.40.000.0-2.70.020-3011.4-0.040.0-0.53.630-5022.20.91-6.1-0.90.050-8022.20.000.0-7.10.090-11022.2-5.430.0-13.59.9110-13022.2-0.1211.8-7.10.0130-17022.20.000.0-2.70.020-3022.20.040.0-0.53.630-5033.5-0.95-6.1-0.90.050-8033.5-5.230.0-7.10.090-11033.5-5.360.0-13.59.9110-13033.50.0111.8-7.10.0130-17033.50.000.0-2.70.020-3033.5-0.380.0-0.53.630-5043.74.54-6.1-0.90.050-8043.7-0.970.0-7.10.090-11043.7-0.730.0-13.59.9110-13043.70.1311.8-7.10.0130-17043.70.000.0-2.70.020-3043.70.260.0-0.53.630-50　　3　,,,、、,,:(1),,;(2),,、、;(3)(snubber)。:[1]　,.[J].,1993,5(14):58-64.[2],,.[M].:,1993.[3]Stretcher,Wolfgang.Minimizingtheriskofwaterhammerandotherproblemsatthebeginningofstag-nationofsolarthermalplants[J].SolarEnergy2001,69(6):187-196.[4]ChunMH,YuSO.Aparametricstudyandaguidecharttoavoidcondensation-inducedwaterhammerinahorizontalpipe[J].NuclearEngineeringandDesign,2000,201(2,3):239-257.185