热固耦合作用下9F级燃气轮机碰摩转子的振动分析
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摘要
针对燃气轮机转子碰摩故障的振动特性,建立了包含温度因素的9F级燃气轮机碰摩转子的动力学方程.建立9F级燃气轮机转子的结构模型,对燃气轮机转子进行瞬态热应力分析,同时考虑到碰摩力的影响.研究了9F燃气轮机转子从正常运行到停机72小时不同时刻的温度场及热应力.分析结果表明:采用有限元分析方法对9F级燃气轮机碰摩转子的振动特性研究是可行的,同时考虑到转子热固耦合作用的影响,对于更准确地研究转子的碰摩故障的振动特性具有重要意义.
Based on the vibration characteristics of gas turbine rotor rubbing fault,the dynamic equation of the9 F stage gas turbine rotor is established,and the temperature factor is introduced into the equation. Secondly,structure model of 9 F gas turbine rotor is built. Then,the transient thermal stress analysis of the rotor is carried out,meanwhile,considering the influence of thermal-structure coupling. The temperature field and thermal stress of rotor from normal operation to 72 hours of shutdown are studied. The analysis results show that the application of finite element analysis method to study the vibration characteristics of the 9 F gas turbine rotor is feasible. Furthermore,the effect of the rotor thermal-structure coupling is taken into consideration,and it is of great significance to study the vibration characteristics of rotor rubbing fault more accurately.
Based on the vibration characteristics of gas turbine rotor rubbing fault,the dynamic equation of the9 F stage gas turbine rotor is established,and the temperature factor is introduced into the equation. Secondly,structure model of 9 F gas turbine rotor is built. Then,the transient thermal stress analysis of the rotor is carried out,meanwhile,considering the influence of thermal-structure coupling. The temperature field and thermal stress of rotor from normal operation to 72 hours of shutdown are studied. The analysis results show that the application of finite element analysis method to study the vibration characteristics of the 9 F gas turbine rotor is feasible. Furthermore,the effect of the rotor thermal-structure coupling is taken into consideration,and it is of great significance to study the vibration characteristics of rotor rubbing fault more accurately.
引文
1刘杨,李炎臻,石拓等.转子-滑动轴承系统不对中-碰摩耦合故障分析.机械工程学报,2016,52(13):79~86(Liu Y,Li Y Z,Shi T,et al.Study on misalignmentrubbing coupling fault of rotor system supported by oil film force.Chinese Journal of Mechanical Engineering,2016,52(13):79~86(in Chinese))
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3宋雪萍,刘宇,刘元伟.航空发动机转子系统的动力学特性.大连交通大学学报,2016,37(2):28~31(Song X P,Liu Y,Liu Y W.Study on dynamical characteristics of aero-engine rotor system.Journal of Dalian Jiaotong U-niversity,2016,37(2):28~31(in Chinese))
4马辉,杨健,宋溶泽等.转子系统碰摩故障实验研究进展与展望.振动与冲击,2014,33(6):1~12(Ma H,Yang J,Song R Z,et al.Review and prospect on the research of rub-impact experiment of rotor systems.Journal of Vibration and Shock,2014,33(6):1~12(in Chinese))
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7徐百成,李卫军,吴文健等.9FA燃气轮机高中压转子碰摩振动的分析与处理.浙江电力,2014(12):40~42(Xu B C,Li W J,Wu W J,et al.Analysis and treatment on rubbing vibration of HP-IP rotors for 9FA gas turbines.Zhejiang Electric Power,2014(12):40~42(in Chinese))
8高,秦卫阳,梁晓鹏等.碰摩转子-轴承系统的随机分岔与混沌特性分析.振动与冲击,2013,32(20):161~164(Gao Z,Qin W Y,Liang X P,et al.Stochastic bifurcation and chaos analysis of a rub-impact rotorbearing system.Journal of Vibration and Shock,2013,32(20):161~164(in Chinese))
9 Cao J,Ma C,Jiang Z,et al.Nonlinear dynamic analysis of fractional order rub-impact rotor system.Communications in Nonlinear Science and Numerical Simulation,2011,16(3):1443~1463
10李朝峰,李鹤,马辉等.碰摩故障多自由度转子-轴承系统周期运动稳定性研究.机械工程学报,2010,46(11):107~113(Li C F,Li H,Ma H,et al.Bifurcation and stability of the flexible rotor-bearing system with rubimpact by a continuum model.Chinese Journal of Mechanical Engineering,2010,46(11):107~113(in Chinese))
11 Bachschmid N,Pennacchi P,Vania A.Thermally induced vibrations due to rub in real rotors.Journal of Sound and Vibration,2007,299(4-5):683~719
12 Zhao T Y,Yuan H Q,Li B B,et al.Analytical solution for rotational rub-Impact plate under thermal shock.Journal of Mechanics,2016,32(3):297~311
13 Banaszkiewicz M.On-line monitoring and control of thermal stresses in steam turbine rotors.Applied Thermal Engineering,2016,94(3):763~776
14沈士一,庄贺庆,康松等.汽轮机原理.北京:水利电力出版社,1992(Shen S Y,Zhuang H Q,Kang S,et al.Principles of Steam Turbine.Beijing:Water Resourcesand Electric Power Press,1992(in Chinese))
15何鹏.弹塑性接触和温度分布对拉杆转子动力学特性的影响研究[博士学位论文].哈尔滨:哈尔滨工业大学,2013(He P.Research on the influence of elasticplastic and temperature distribution on tie-bolted fastened rotor dynamics[PhD Thesis].Haerbin:Harbin Institute of Technology,2013(in Chinese))
2韩清凯,王美令,赵广等.转子系统不对中问题的研究进展.动力学与控制学报,2016,14(1):1~13(Han QK,Wang M L,Zhao G,et al.A review of rotor system with misalignment.Journal of Dynamics and Control,2016,14(1):1~13(in Chinese))
3宋雪萍,刘宇,刘元伟.航空发动机转子系统的动力学特性.大连交通大学学报,2016,37(2):28~31(Song X P,Liu Y,Liu Y W.Study on dynamical characteristics of aero-engine rotor system.Journal of Dalian Jiaotong U-niversity,2016,37(2):28~31(in Chinese))
4马辉,杨健,宋溶泽等.转子系统碰摩故障实验研究进展与展望.振动与冲击,2014,33(6):1~12(Ma H,Yang J,Song R Z,et al.Review and prospect on the research of rub-impact experiment of rotor systems.Journal of Vibration and Shock,2014,33(6):1~12(in Chinese))
5 Abu-Mahfouz I,Banerjee A.On the investigation of nonlinear dynamics of a rotor with rub-impact using numerical analysis and evolutionary algorithms.Procedia Computer Science,2013,20(1):140~147
6梁明轩,袁惠群.滚动轴承-柔性碰摩转子系统非线性动力学响应分析.动力学与控制学报,2013,11(2):153~158(Liang M X,Yuan H Q.Nonlinear dynamic response on rotor system of ball bearing-flexible rub.Journal of Dynamics and Control,2013,11(2):153~158(in Chinese))
7徐百成,李卫军,吴文健等.9FA燃气轮机高中压转子碰摩振动的分析与处理.浙江电力,2014(12):40~42(Xu B C,Li W J,Wu W J,et al.Analysis and treatment on rubbing vibration of HP-IP rotors for 9FA gas turbines.Zhejiang Electric Power,2014(12):40~42(in Chinese))
8高,秦卫阳,梁晓鹏等.碰摩转子-轴承系统的随机分岔与混沌特性分析.振动与冲击,2013,32(20):161~164(Gao Z,Qin W Y,Liang X P,et al.Stochastic bifurcation and chaos analysis of a rub-impact rotorbearing system.Journal of Vibration and Shock,2013,32(20):161~164(in Chinese))
9 Cao J,Ma C,Jiang Z,et al.Nonlinear dynamic analysis of fractional order rub-impact rotor system.Communications in Nonlinear Science and Numerical Simulation,2011,16(3):1443~1463
10李朝峰,李鹤,马辉等.碰摩故障多自由度转子-轴承系统周期运动稳定性研究.机械工程学报,2010,46(11):107~113(Li C F,Li H,Ma H,et al.Bifurcation and stability of the flexible rotor-bearing system with rubimpact by a continuum model.Chinese Journal of Mechanical Engineering,2010,46(11):107~113(in Chinese))
11 Bachschmid N,Pennacchi P,Vania A.Thermally induced vibrations due to rub in real rotors.Journal of Sound and Vibration,2007,299(4-5):683~719
12 Zhao T Y,Yuan H Q,Li B B,et al.Analytical solution for rotational rub-Impact plate under thermal shock.Journal of Mechanics,2016,32(3):297~311
13 Banaszkiewicz M.On-line monitoring and control of thermal stresses in steam turbine rotors.Applied Thermal Engineering,2016,94(3):763~776
14沈士一,庄贺庆,康松等.汽轮机原理.北京:水利电力出版社,1992(Shen S Y,Zhuang H Q,Kang S,et al.Principles of Steam Turbine.Beijing:Water Resourcesand Electric Power Press,1992(in Chinese))
15何鹏.弹塑性接触和温度分布对拉杆转子动力学特性的影响研究[博士学位论文].哈尔滨:哈尔滨工业大学,2013(He P.Research on the influence of elasticplastic and temperature distribution on tie-bolted fastened rotor dynamics[PhD Thesis].Haerbin:Harbin Institute of Technology,2013(in Chinese))