2N和N+1支撑三跨转子在三种联轴器下的振动特性实验研究

胡航领,何立东,王晨阳

振动与冲击 ›› 2017, Vol. 36 ›› Issue (5) : 164-168.

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振动与冲击 ›› 2017, Vol. 36 ›› Issue (5) : 164-168.
论文

2N和N+1支撑三跨转子在三种联轴器下的振动特性实验研究

  • 胡航领,何立东,王晨阳
作者信息 +

Tests for vibration characteristics of a N-span & 2N-support rotor system and a N-span & (N+1)-support one connected with three kinds of coupling

  • HU Hangling,HE Lidong,WANG Chenyang
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文章历史 +

摘要

针对2N和N+1支撑转子轴系通过临界转速时振动过大的问题,搭建了2N(三跨六支撑)和N+1支撑(三跨四支撑)轴系实验台,模拟开机启动过程,试验研究两实验台轴系分别使用刚性、膜片和弹性联轴器时的振动特性。结果表明,N+1支撑方式可降低原2N支撑轴系对应的临界转速,且N+1支撑轴系各转轴的耦合更为强烈,容易激起相邻转轴的振动。使用刚性较小的联轴器时,2N 和N+1支撑轴系振动均趋于平稳,说明轴系的耦合减弱,如2N支撑轴系测点1使用弹性联轴器时相比于使用刚性联轴器时在临界转速附近振动幅值降幅达50%。

Abstract

In order to solve the problem that 2 N-span & 2N-support rotor system and a N-span & (N+1)-support one have too large vibrations when passing through their critical speeds,their test benches were established to simulate their operation process.The vibration characteristics of  two rotor systems connected with three kinds of coupling were studied.The results showed that if the 2N-support mode is replaced by the (N+1)-support one,the critical speeds of the rotor system can be reduced; the coupling among rotating shafts of the rotor system with (N+1)-support mode is stronger to easily excite vibrations of adjacent shafts; the vibrations of the 2N-support rotor system and the (N+1)-support one tend to be steady when connected with smaller stiffness couplings,so the coupling among rotating shafts tends to be weaker; for an example,the vibration amplitude of the measurement point 1 on the rotor system with 2N-support when connected with flexible couplings is reduced by 50% near the critical speeds of the system,compared with that when connected with rigid couplings.

关键词

2N支撑轴系 / N+1支撑轴系 / 临界转速 / 共振峰值

Key words

2N-support rotor / (N+1)-support rotor / critical speed / resonance peak

引用本文

导出引用
胡航领,何立东,王晨阳. 2N和N+1支撑三跨转子在三种联轴器下的振动特性实验研究[J]. 振动与冲击, 2017, 36(5): 164-168
HU Hangling,HE Lidong,WANG Chenyang. Tests for vibration characteristics of a N-span & 2N-support rotor system and a N-span & (N+1)-support one connected with three kinds of coupling[J]. Journal of Vibration and Shock, 2017, 36(5): 164-168

参考文献

[1]高庆水,邓小文,张楚,等. 单支撑1000MW超超临界汽轮机轴系不平衡响应分析[J]. 振动与冲击,2014,33(14):201-205.
GAO Qing-shui, DENG Xiao-wen, Zhang Chu, et-al. Unbalance response of 1000MW ultra supercritical turbine with single bearing support [J]. Journal of Vibration and Shock, 2014,33(14):201-205.
[2]吴文健,童小忠,应光耀,等.单支撑超超临界1000MW汽轮发电机组振动诊断与处理[J].浙江电力,2011,10:32-36.
WU Wen-jian, TONG Xiao-zhong, Ying Guang-yao, et-al. Diagnosis and treatment for vibration of ultra-supercritical 1000 MW steam turbine units supported by single bearing[J].Zhejiang Electric Power,2011,10:32-36.
[3] 张学延,张卫军,葛祥,等. 西门子技术1000MW 超超临界机组轴系振动问题[J]. 中国电力,2012,45(05):68-72.
Zhang Xue-yan, Zhang wei-jun, Ge Xiang, et-al.Vibration of turbine shafting in 1000 MW ultra supercriticalunit with Siemens technology[J].ChinaElectric Power, 2012,45(05):68-72.
[4] 武秀峰. 我国超超临界机组参数与结构选型的研究[J]. 电力科学与工程,2008,24(9):45-50.
Wu Xiu-feng. Research on parameter and construction selection of ultra-supercritical unit in China[J]. Electric Power Science and Engineering, 2008,24(9): 45-50.
[5] 赵荣珍,张优云,孟凡明. 双跨转子轴承系统耦合实验研究[J]. 润滑与密封,2003,03:7-8.
Zhao Rong-zhen, Zhang You-yun, Mneg Fan-ming. Experimental study of coupling effects between two spans in rotor-bearing system[J].Lubrication and sealing, 2003,03:7-8.
[6] 罗跃纲,杜元虎,刘晓东,等. 双跨转子系统支承松动的动态特性及故障特征研究[J].机械强度,2006,28(03):327-331.
Luo Yue-gang, Du Yuan-hu, Liu Xiao-dong, et-al. Study on dynamics and fault characteristics of two-span rotor-bearing system with pedestal looseness[J]. Journal of mechanical strength, 2006,28(03):327-331.
[7] 罗跃纲,闻邦椿.双跨松动转子-轴承系统周期运动稳定性[J]. 振动与冲击, 2007,26(08):9-12.
Luo Yueg-ang, Wen Bang-chun. Stability of two-span rotor-bearing system with pedestal looseness fault[J]. Journal of Vibration and Shock, 2007,26(08):9-12.
[8] Springer H. Nonlinear unbalance response and stability thresholds of a warped multi-mass rotor inmisaligned bearings[J]. IMeche,1984,C:295/84.
[9] 高金吉,缪红燕,徐鸿,等. 多转子轴系优化耦联及其不平衡响应有限元分析[J]. 振动与冲击,2005,24(02):1-4.
Gao Jin-ji, Miao Hong-yan, Xu Hong, et-al. Multi-rotors system coupling optimization and unbalance response analysis with finite element method[J], Journal of Vibration and Shock, 2002, 24(02): 1-4.
[10] 缪红燕,高金吉,徐鸿,等. 基于有限元法的柔性转子虚拟动平衡研究[J]. 振动、测试与诊断,2004,24(03):14-18.
Miao Hong-yan, Gao Jin-ji, Xu Hong, et-al. A study of virtual balancing of flexible rotor based on finite element method[J]. Journal of Vibration, Measurement& Diagnosis, 2004, 24(03): 14-18.
[11] R.E.D. Bishop, G.M.L. Gladwell. The vibration and balancing of an unbalance flexible rotor[J]. Journal of Mechanical Engineering for Science, 1959 (1): 66–77.
[12] J.W. Lund, J. Tonnesen. Analyses and experiments on multiplane balancing of a flexible rotor[J]. American Society of Mechanical Engineers Journal of Engineering for Industry, 1972,94:233–242.
[13] 范叶森,王三民,杨振,等. 挠性联轴器耦合多转子系统振动分析的总体耦合矩阵法[J]. 机械科学与技术,2010,29(05):584-588.
FanYe-sen, WangSan-min, YangZhen, et-al. A whole coupled matrixmethod for vibration analysis of multi-rotor system with flexible couplings[J]. Mechanical Science and Techmology for Aerospace Engineering, 2010, 29(05): 584-588

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