灯泡贯流泵房机组的橡胶垫减振措施研究
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摘要
针对南水北调东线工程大型灯泡贯流泵房的振动问题,首次提出采用橡胶垫减振的振动控制措施.采用经典减振理论进行减振设计,通过参数控制选择合适的橡胶垫,确定设计方案,采用Bouc-Wen微分型恢复力模型模拟橡胶垫的非线性滞回特性,利用MATLAB中的SIMULINK工具进行仿真分析,通过非线性计算验证方案的可行性.将橡胶垫减振措施应用于淮阴三站的减振设计,计算结果表明,采用减振措施后振动强度可降低50%以上.
Vibration damping measure with rubber buffers is proposed for the first time to be applied to the vibration control of the large-scale bulb tubular pump-house in the eastern route of the South-to-North Water Transfer Project.Classical damping theory is used for damping design and suitable rubber buffers are selected through parameter control.Bouc-Wen hysteretic model is applied to simulate the nonlinear characteristics of rubber buffers.With simulation analysis based on SIMULINK of MATLAB,the number and the arrangement of rubber buffers are verified through nonlinear calculation.This damping method is used for the damping design of Huaiyin Third Pumping Station and vibration can be reduced by more than 50% after adopting the damping measure.
Vibration damping measure with rubber buffers is proposed for the first time to be applied to the vibration control of the large-scale bulb tubular pump-house in the eastern route of the South-to-North Water Transfer Project.Classical damping theory is used for damping design and suitable rubber buffers are selected through parameter control.Bouc-Wen hysteretic model is applied to simulate the nonlinear characteristics of rubber buffers.With simulation analysis based on SIMULINK of MATLAB,the number and the arrangement of rubber buffers are verified through nonlinear calculation.This damping method is used for the damping design of Huaiyin Third Pumping Station and vibration can be reduced by more than 50% after adopting the damping measure.
引文
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[2]董毅,吕省三.大型虹吸式轴流泵站启动振动原因分析[J].江苏水利,2001(4):25-26.(DONG Yi,LV Sheng-san.Vibration reason analysis in the starting of the large siphon axial flow pumping station[J].Jiangsu Water Resources,2001(4):25-26.(in Chinese))
[3]ABDEL-RAHMAN S M,HELAL M A,NASSER M A.Vibration problems of axial flow pump[C]∥Proceedings of theInternational Modal Analysis Conference,2000,V1:891-898.
[4]AWASTHI J P.Vibration problem of large capacity pumps-a case study[J].Journal of Indian Water Works Association,1987,19(4):287-294.
[5]ORTWIG H.Experimental and analytical vibration analysis in fluid power systems[J].International Journal of Solids andStructures,2005,42(21-22):5821-5830.
[6]MINISCI E,TELIB H,GIANCARLO C.Hydraulic design validation of the suction intake of a vertical centrifugal pump station,by use of computational fluid dynamic(CFD)analysis[C]∥Proceedings of 2005 ASME Fluids Engineering Division SummerMeeting(FEDSM2005),USA:Houston,2005:1512-1523.
[7]BEEKMAN B.Resonant vibrations in vertical pumps[J].World Pumps,2004(458):18.
[8]WHEATLEY S.Using pulsation dampers to reduce pipework vibrations[J].World Pumps,2002(424):32-35.
[9]WALSHP L,LAMANCUSA J S.A variable stiffness vibration absorber for minimization of transient vibrations[J].Journal ofSound and Vibration,1992,158(2):195-211.
[10]郑建国,姚志远,孙培林.水泵房噪声综合治理[J].噪声与振动控制,1998(3):29-35.(ZHENG Jian-guo,YAO Zhi-yuan,SUN Pei-lin.Synthetic control on yawp in water pump room of one power plant[J].Noise and Vibration Control,1998(3):29-35.(in Chinese))
[11]张宝军,张弛.水泵噪声声源的控制和防护[J].噪声与振动控制,2000(2):39-40.(ZHANG Bao-jun,ZHANG Chi.Control and protection for the noise source of pump[J].Noise and Vibration Control,2000(2):39-40.(in Chinese))
[12]陈水生,万益春,野田尚昭.隔震桥梁地震响应非线性分析[J].长安大学学报:自然科学版,2006,26(1):54-58.(CHEN Shui-sheng,WANYi-chun,NAO-AKI Noda.Nonlinear response of isolated-bridge subjected to seismic excitation[J].Journal of Chang′an University(Natural Science Edition),2006,26(1):54-58.(in Chinese))
[13]刘云贺,陈厚群.大型渡槽铅销橡胶支座减震机理的数值模拟[J].水利学报,2003(12):98-103.(LIUYun-he,CHENHou-qun.A seismic effect of lead rubber bearing for large scaled aqueduct[J].Journal of Hydraulic Engineering,2003(12):98-103.(in Chinese))
[14]BOUC R.Forced vibration of mechanical system with hysteresis[C]∥Proceedings of the 4th International Conference onNonlinear Oscillations,Czechoslovakia Prague,1967:186-197.
[15]WEN Y K.Method for random vibration of hysteretic systems[J].J Eng Mech Div,ASCE,1976,102(2):249-263.
[16]薛定宇.控制系统计算机辅助设计——MATLAB语言与应用[M].2版.北京:清华大学出版社,2006.(XUE Ding-yun.Computer aided control system design using MATLAB language[M].2nd ed.Beijng:Tsinghua University Press,2006.(in Chinese))
[17]王建强,王利娟.铅芯叠层橡胶支座恢复力模型研究[J].世界地震工程,2005,21(2):151-154.(WANG Jian-qiang,WANG Li-juan.Study on restoring force model of a lead rubber bearing[J].World Earthquake Engineering,2005,21(2):151-154.(in Chinese))
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