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电站动叶可调式轴流风机叶轮动力特性研究

DOI: 10.13334/j.0258-8013.pcsee.2014.24.016, PP. 4118-4128

Keywords: 动叶可调轴流风机,叶轮,流固耦合,静力分析,振动特性

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Abstract:

基于有限元分析方法,结合流固耦合理论,对某电站两级动叶可调式轴流风机叶轮的静态及动态特性分别进行了研究。研究结果表明,离心载荷及气动载荷对叶轮应力及变形分布具有重要影响,考虑流固耦合作用后,叶轮最大等效应力值减小约6%,最大总变形位置从叶尖后缘点变为叶尖前缘点;叶轮一阶模态的坎贝尔图表明,在风机转速1?490?r/min附近,最危险的是k(阶次)=m(节径数)=10“三重点”共振条件,共振裕度为1.9%。当节径数m≤6时,该文的叶轮振动特性避开了“三重点”共振。研究结果对动叶可调轴流风机的安全运行具有重要的理论意义与工程价值。

References

[1]  张磊,王松岭,张倩,等.离心风机旋转失速状态下的流体动力学特征[J].中国电机工程学报,2012,32(14):95-102.Zhang Lei,Wang Songling,Zhang Qian,et al.Dynamic characteristics of rotating stall for centrifugal fans[J].Proceedings of the CSEE,2012,32(14):95-102(in Chinese).
[2]  叶学民,李新颖,李春曦.两级动叶可调轴流风机内流特征的数值模拟[J].动力工程学报,2013,33(11):871-877.Ye Xuemin,Li Xinying,Li Chunxi.Numerical simulation on internal flow field of a two-stage variable vane axial flow fan[J].Journal of Chinese Society of Power Engineering,2013,33(11):871-877(in Chinese).
[3]  黄玉海,仲梁维,陆龙云,等.径流叶轮静态和固有频率的三维有限元分析[J].上海大学学报,2004,26(5):451-453.Huang Yuhai,Zhong Liangwei,Lu Longyun,et al.Three dimensional finite element analysis of radial-flow impellers static and dynamic characteristic[J].Journal of University of Shanghai for Science and Technology,2004,26(5):451-453(in Chinese).
[4]  Kim T G,Lee H C.Failure analysis of MVR impeller blade[J].Engineering Failure Analysis,2003,17(6):307-315.
[5]  Ejaz N,Salam I,Tauqir A.Fatigue failure of a centrifugal compressor[J].Engineering Failure Analysis,2007,14(7):1313-1321.
[6]  Lee Y J,Jhan Y T,Chung C H.Fluid-structure interaction of FRP wind turbine blades under aerodynamic effect[J].Composites:Part B,2012,43(5):2180-2191.
[7]  Otero A D,Ponta F L.Structural analysis of wind-turbine blades by a generalized timoshenko beam model[J].Journal of Solar Energy Engineering,2010,132(1):011015.
[8]  Kim D H,Kim Y H.Performance prediction of a 5?MW Wind turbineblade considering aeroelastic effect[J].Proceedings of World Academy of Science,Engineering and Technology,2011(81):771-775.
[9]  胡丹梅,张志超,孙凯,等.风力机叶片流固耦合计算分析[J].中国电机工程学报,2013,33(17):98-104.Hu Danmei,Zhang Zhichao,Sun Kai,et al.Computational analysis of wind turbine blades based on fluid-structure interaction[J].Proceedings of the CSEE,2013,33(17):98-104(in Chinese).
[10]  Lerche A,Moore J J,Feng Y S .Computational modeling and validation testing of dynamic blade stress in a rotating centrifugal compressor using a time domain coupled fluid-structure computational model[C]//Proceedings of ASME Turbo Expo 2010,Glasgow,UK,2010.
[11]  Dhopade P,Neely A J,Young J.Fluid-structure interaction of gas turbine blade[C]//17th Australasian Fluid Mechanics Conference,Auckland,New Zealand,2010.
[12]  Zhou X,Wolff J M.Transonic compressor IGV/rotor interaction analysis including fluid structure interaction,AIAA2004-5292[C]//22nd AIAA Applied Aerodynamics Conference,Providence,United States,2004.
[13]  毛军,杨立国,郗艳红.大型轴流风机叶片的气动弹性数值分析研究[J].机械工程学报,2009,45(11):133-139.Mao Jun,Yang Liguo,Xi Yanhong.Numeric analysis of on the pneumatic elasticity of large axial-flow fan blade[J].Journal of Mechanical Engineering,2009,45(11):133-139(in Chinese).
[14]  毛军,薛琳,王丹,等.关于地铁轴流风机叶片发生断裂和出现裂纹的分析[J].中国安全科学学报,2003,14(5):75-80.Mao Jun,Xue Lin,Wang Dan,et al.Analysis of the rupture and flaw happened to vanes of axial fans in subway[J].China Safety Science Journal,2003,14(5):75-80(in Chinese).
[15]  杨佑续,吴志刚,杨超.飞翼结构构型气动弹性优化设计方法[J].航空学报,2013,34(12):2748-2756.Yang Youxu,Wu Zhigang,Yang Chao.An aeroelastic optimization design approach for structural configuration of flying wings[J].Acta Aeronautica et Astronautica Sinica,2013,34(12):2478-2756(in Chinese).
[16]  贾欢,孙秦,刘杰.基于修正面元法的机翼静气动弹性计算[J].计算物理,2014,31(1):21-26.Jia Huan,Sun Qin,Liu Jie.A corrected panel method for static aeroelasticity[J].Chinese Journal of Computational Physics,2014,31(1):21-26(in Chinese).
[17]  吴正人,王松岭,戎瑞,等.基于流固耦合的离心风机叶轮动力特性分析[J].动力工程学报,2013,33(1):53-60.Wu Zhengren,Wang Songling,Rong Rui,et al.Dynamic characteristics analysis on impeller of centrifugal fan based on fluid-solid coupling[J].Journal of Chinese Society of Power Engineering,2013,33(1):53-60(in Chinese).
[18]  Jiang Y Y,Yoshimura S,Imai R,et al.Quantitative evaluation of flow-induced structural vibration and noise in turbomachinery by full-scale weakly coupled simulation[J].Journal of Fluids and Structures,2007,23(4):532-544.
[19]  陈杰,沈荣瀛,华宏星,等.通风机叶片振动安全性分析[J].核动力工程,2006,27(5):84-86.Chen Jie,Shen Rongying,Hua Hongxing,et al.Vibration safety analysis of fan blades[J].Nuclear Power Engineering,2006,27(5):84-86(in Chinese).

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