高速透平发电机自动降速故障试验研究

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振动与冲击 ›› 2015, Vol. 34 ›› Issue (7) : 204-208.

论文

高速透平发电机自动降速故障试验研究

对高速透平发电机在驱动气流量不减少的情况下发生的自动降速现象进行了理论分析及试验研究。应用计算流体力学软件FLUENT对机身内部流场的压力分布进行定量分析，并对转子系统所受轴向力进行定性分析。通过时间三维谱图、轴心轨迹、频谱分析等非线性振动分析方法分析自动降速现象的特征及发展过程。试验分析表明，轴向力的变化引起转子发生轴向位移，进而导致轴向碰摩，引起高速透平发电机发生自动降速现象。

作者信息 +

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.

Author information +

文章历史 +

摘要

对高速透平发电机在驱动气流量不减少的情况下发生的自动降速现象进行了理论分析及试验研究。应用计算流体力学软件FLUENT对机身内部流场的压力分布进行定量分析，并对转子系统所受轴向力进行定性分析。通过时间三维谱图、轴心轨迹、频谱分析等非线性振动分析方法分析自动降速现象的特征及发展过程。试验分析表明，轴向力的变化引起转子发生轴向位移，进而导致轴向碰摩，引起高速透平发电机发生自动降速现象。

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.

导出引用

付忠广 1，边技超 1，杨金福 2，韩东江 2. 高速透平发电机自动降速故障试验研究[J]. 振动与冲击, 2015, 34(7): 204-208

FU Zhongguang1，BIAN Jichao1，YANG Jinfu2,HAN Dongjiang2. Experimental Study on Automatic Slow-down Fault of High-speed Turbine Generator[J]. Journal of Vibration and Shock, 2015, 34(7): 204-208

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