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中文摘要: 振动监测和诊断是及时诊断旋转机械故障的手段之一,其中的频谱分析能有效地诊断出转子裂纹。 介绍了某燃气轮机转子裂纹的振动现象、处理过程以及故障诊断。转子裂纹的振动有以下特征:裂纹转子具 有刚度不对称的特点，运行中存在二倍频振动，在启停机经过转子临界转速一半时存在二倍频共振峰;随着 裂纹的发展，二倍频共振峰值有增大趋势;联轴器瓢偏以及低速盘车时转子晃度也会增大。根据转子的振动 特征判断该转子存在裂纹且仍在发展,检查结果验证了故障诊断的正确性，为转子裂纹的故障分析与诊断提 供参考。
Abstract:Vibration monitoring and diagnosis is one of methods to diagnose the fault of rotating machinery. The spectrum analysis can electively diagnose the rotor cracks. The vibration phenomena, treatment process and fault diagnosis of a gas turbine rotor cracks are introduced. The vibration characteristics of the cracked rotor are summarized as follows. Firstly the cracked rotor has the characteristics of asymmetric stiffness, which will result in 2X vibration during operation. The resonance peak of 2X vibration appears when passing through half of the critical speed during start-up or shutdown. Secondly with the development of cracks, the resonance peak of 2X vibration tends to increase. Thirdly the rotor flutter and skewness of the coupling end place also increase at low speed. According to the vibration characteristics, the existence and development of rotor cracks were judged. The inspection results verified the correctness of the fault diagnosis, which provides references for analysis and fault diagnosis of rotor cracks.
keywords: rotor crack vibration 2X vibration fault diagnosis
文章编号： 中图分类号：TK478 文献标志码：
基金项目:
| 作者 | 单位 |
| 赵卫正 | 浙江省火力发电高效节能与污染物控制技术研究重点实验室； 浙江浙能技术研究院有限公司 |
| 童小忠 | 浙江省火力发电高效节能与污染物控制技术研究重点实验室； 浙江浙能技术研究院有限公司 |
| 谢尉扬 | 浙江省火力发电高效节能与污染物控制技术研究重点实验室； 浙江浙能电力股份有限公司 |
| 张 卫 | 浙江浙能金华燃机发电有限责任公司 |
引用文本：
作者.题名[J].刊名,出版年份,卷号(期号):起止页码.
[2]KIM K M, PARK J S, DONG H L, et al. Analysis of conjugated heat transfer, stress and failure in a gas turbine blade with circular cooling passages[J]. Engineering Failure Analysis, 2011, 18(4):1212-1222.
作者.题名[J].刊名,出版年份,卷号(期号):起止页码.
[2]KIM K M, PARK J S, DONG H L, et al. Analysis of conjugated heat transfer, stress and failure in a gas turbine blade with circular cooling passages[J]. Engineering Failure Analysis, 2011, 18(4):1212-1222.