Experimental Study on Automatic Slow-down Fault of High-speed Turbine Generator
The theoretical analysis and experimental research of high-speed turbine generator automatic slow-down fault were conducted on the condition that the drive gas flow didn’t reduced. The FLUENT was used to quantitative analysis the internal flow field pressure distribution and the axial force of rotor system was qualitative analyzed. The time-frequency-amplitude waterfall diagrams, shaft orbit, frequency spectrum characters and bifurcation diagram were used to analyse characteristic and development process of automatic slow-down fault. Experimental results shows that the change of axial force causes axial displacement of rotor system and axial displacement causes axial contacts. In the finally, the result leads to automatic slow-down of high-speed turbine generator.
1.School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing 102206，China；
2. Institute of Engineering Thermo physics, Chinese Academy of Sciences，Beijing 100190，China；
Abstract：The theoretical analysis and experimental research of high-speed turbine generator automatic slow-down fault were conducted on the condition that the drive gas flow didn’t reduced. The FLUENT was used to quantitative analysis the internal flow field pressure distribution and the axial force of rotor system was qualitative analyzed. The time-frequency-amplitude waterfall diagrams, shaft orbit, frequency spectrum characters and bifurcation diagram were used to analyse characteristic and development process of automatic slow-down fault. Experimental results shows that the change of axial force causes axial displacement of rotor system and axial displacement causes axial contacts. In the finally, the result leads to automatic slow-down of high-speed turbine generator.
[1] 王顺康，周荣成，任浩瀚. 分布式供能系统的运行分析及优化研究[J].华东电力，2012,40（12）：2311-2313.
[2] 隋军，金红光. 我国分布式供能关键技术研究进展[J].发电与空调，2012,（4）：1-4.
SUI Jun, JIN Hongguang. Research and Development on Key Technologies of Distributed Energy System in China[J]. Power Generation & Air Condition, 2012,（4）：1-4. (in Chinese)
[3] 宋志强，马震岳.考虑不平衡电磁拉力的偏心转子非线性振动分析[J]. 振动与冲击，2010，29(08):169-173，250.
SONG Zhiqiang, MA Zhenyue. Nonlinear Vibration Analysis of an Eccentric Rotor with Unbalance Magnetic Pull[J]. Journal of Vibration and Shock, 2010,08:169-173,250. (in Chinese)
[4] 沈松，郑兆昌，应怀樵.非对称转子-轴承-基础系统的非线性振动[J].振动与冲击，2004，23(04)：31-33，39.
SENG Song, ZHENG Zhaochang, YING Huaiqiao. Nonlinear Vibration of Unsymmetrical Rotor-Bearing-Foundation System [J]. Journal of Vibration and Shock, 2004,23(04): 31-33,39.(in Chinese)
[5] 罗跃纲，张松鹤，闻邦椿. 转子-轴承系统裂纹-碰摩耦合故障的非线性特性研究[J].振动与冲击，2005，24(03)：43-46，4.
LUO Yuegang, ZHANG Songhe, WEN Bangchun. Study on Nonlinear Characteristics of Rotor-Bearing System with Coupling Faults of Crack and Rub-impact[J].Journal of Vibration and Shock, 2005,24(03): 43-46,4.(in Chinese)
[6] 陈果.具有不平衡-碰摩耦合故障的转子-滚动轴承系统非线性动力学研究[J].振动与冲击，2008，27(04)：43-48，167-168.
CHEN Guo. Nonlinear Dynamic Study Rotor-Ball Bearing System with Unbalance-Rubbing Coupling Fault[J]. Journal of Vibration and Shock, 2008,27(04): 43-48,167-168.(in Chinese)
[7] 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[J]. 振动与冲击，2014，33(06)：1-12.
MA Hui, YANG Jian, SONG Rongze et al. Review and Prospect on the Research of Rub- impact Experiment of Rotor Systems[J]. Journal of Vibration and Shock, 2014, 33(06):43-48.(in Chinese)
[8] 刘杨，太兴宇，姚红良等.双盘转子轴承系统不对中-碰摩耦合故障分析[J].振动、测试与诊断，2013，05：819-823，913.
Liu Yang, Tai Xingyu, Yao Hongliang et al. Study on Misalignment-Rubbing Coupling Fault of Dual-disk Rotor-Bearing System Including the Impact of Motor Coupling[J].Journal of Vibration, Measurement ＆Diagnosis, 2013,05:819-823,913.
[9] 华征潇，易风. 转子系统动静件碰摩故障的影响因素研究[J]. 常熟理工学院学报（自然科学），2013，27(04)：46-50.
HUA Zheng-xiao, YI Feng. A Study on the Influence Factors of Rub-impact Fault in the Rotor System[J]. Journal of Changshu Institute Technology (Natural Sciences), 2013,27(04):46-50.
[10] 宋光雄，张亚飞，宋君辉等. 大型汽轮发电机组碰摩故障案例研究及分析[J]. 汽轮机技术，2013，55(04)：241-246.
SONG Guang-xiong, ZHANG Ya-fei, SONG Junhui et al. Case Research on Rub- impact Fault of Large Turbine Generator Unit[J]. Turbine Technology, 2013,55(04):241-246. (in Chinese)
[11] 刘桂珍，于影，于峰等.非稳态油膜力的转子-定子-轴承系统碰摩故障研究[J].中国工程机械学报，2013，11(05)：432-436.
LIU Gui-zhen, YU Ying YU Feng et al. Rubbing Fault Study on Unsteady Oil-film Forces for Rotor-stator Bearing System[J]. Chinese Journal of Construction Machinery, 2013,11 (05):432-436.
[12] 张跟胜，丁 千，陈予恕.轴向摩擦双盘转子的振动分析[J].机械强度，2009，31(5)：712-718.
ZHANG Gensheng, DING Qian, CHEN Yushu.Vibration Analysis of a Two-disc Shaft with Axial Rubs[J].Journal of Mechanical Strength, 2009,31(5):712-718.
[13] 丁 千.转子-轴承系统受轴向摩擦时的振动[J].机械强度，2004，26（2）：132-137.
DING Qian.Lateral Vibration of a Rotor/Bearing System with Axial Rubs[J].Journal of Mechanical Strength,2004, 26（2）:132-137.
