| 大型汽轮发电机结构振动故障的分析及治理 |
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| 引用本文： | 何国安,师军.大型汽轮发电机结构振动故障的分析及治理[J].中国电力,2015,48(6):133-128. |
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| 作者姓名： | 何国安 师军 |
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| 作者单位： | 1． 西安热工研究院有限公司，陕西 西安 710032；2． 秦皇岛发电有限责任公司，河北 秦皇岛 066003 |
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| 摘 要： | 对大型汽轮发电机在现场屡屡出现的结构振动故障进行了振动特征分析，并结合发电机的结构及安装特点，指出故障原因是发电机的支撑刚度下降所引发的结构共振。据此提出，现场可通过调整地脚螺栓的紧力、在定子上压重物、定子的安装调整、现场动平衡等措施，来消除或减缓发电机的结构振动故障。同时给出了相应的工程实例，说明该类振动故障的处理方法。
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| 关 键 词： | 汽轮发电机 结构振动 支撑刚度 动平衡 |
| 收稿时间： | 2015-03-25 |
Analysis and Treatment on Structural Vibrations in Large Turbo-Generators |
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| HE Guoan,SHI Jun.Analysis and Treatment on Structural Vibrations in Large Turbo-Generators[J].Electric Power,2015,48(6):133-128. |
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| Authors: | HE Guoan SHI Jun |
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| Affiliation: | 1. Xi′an Thermal Power Research Institute Co., Ltd, Xi′an 710032, China;2. Qinhuangdao Power Generation Co., Ltd, Qinhuangdao 066003, China |
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| Abstract: | In this paper, the analysis on the characteristics of large turbo-generator structural vibrations is conducted. Taking account of the structural and installation characteristics, it is concluded that the deterioration of the generator supporting stiffness is the major cause contributing to the structural vibration. Therefore, preventive measures are proposed to eliminate or alleviate the vibrations, such as adjusting the foundation bolts, increasing the weights on the generator stator, optimizing the installation of the generator stator and tuning dynamic balancing on the spot. Meanwhile, corresponding case studies are presented to demonstrate the troubleshooting technique. |
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| Keywords: | turbo-generator structural vibration support stiffness dynamic balance |
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