Analysis of the Impacts of Bearing on Vibration Characteristics of Rotor

Analysis of the Impacts of Bearing on Vibration Characteristics of Rotor
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轴承对转子振动特性的影响分析

DOI:
10.1155/2017/8098591
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发表时间:
2017-12
影响因子:
1.6
通讯作者:
Chao Huang
Chao Huang
中科院分区:
工程技术4区
文献类型:
--
作者:
Peiji Yang;Qi Yuan;Chao Huang

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针对一台双支承转子、盘端伸出的炉顶煤气回收涡轮机(TRT),从理论和实验两方面分析了圆柱轴承和四瓣轴承对TRT转子系统振动的影响。结果表明,在驱动端和非驱动端,圆柱轴承支承的转子振动比四瓣轴承支承的转子振动稳定。两种轴承支承的转子振幅在无损检测时都随着转速的增加而增加,而无损检测的振幅保持不变。通过与理论分析结果的比较,实际测试结果与在伸出盘端部施加不平衡质量进行的理论响应分析更加吻合。提出了一种盘端伸出双支承转子系统临界特性的分析方法,为盘端伸出双支承转子系统振动故障的处理提供了参考价值。
Aiming at a Top Gas Recovery Turbine Unit (TRT) with double support rotor and the extending disk end, theoretical and experimental analysis about influence of cylindrical bearing and four-lobe bearing on vibration of TRT rotor system are conducted in this paper. The results indicate that vibration of the rotor supported by cylindrical bearing is more stable than that supported by four-lobe bearing at the driving end (DE) and the nondriving end (NDE). The amplitude of rotor is supported by both of these types of bearing increases as the speed increases at the NDE, while the amplitude of the DE remains unchanged. Comparing with the result of theoretical analysis, the practical test results are more consistent with the theoretical response analysis conducted by applying unbalanced mass at the extending disk end. This paper presents an analysis method of the critical characteristics of a double support rotor system with the extending disk end and provides reference value for dealing with vibration fault of double support rotor system with the extending disk end.
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