失谐和叶片通过频率对脉动探头涡轮积分模态叶片振动检测的影响

IF 1.3 Q2 ENGINEERING, AEROSPACE
Takashi Ando
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引用次数: 0

摘要

对于使用重质燃料油(HFO)的发动机,涡轮增压器涡轮的喷嘴环容易因未燃烧燃料沉积物的污染而严重退化。这种污染可能导致叶片共振的激发增加。前人的研究提供了利用远离涡轮尾缘的单探头从脉动谱中提取相关信息的技术指导,以及一些完整模态涡轮振动检测的实验证明。这些理论讨论仅暗示了由经典叶片通过频率引起的失谐和干扰对整体叶片振动模式发出的声辐射模式的影响。在本研究中,这两种效应都进行了深入的讨论。结合理论研究的知识和进一步的实验结果,可以显著扩展该叶片振动检测方法的应用范围。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effect of Mistuning and Blade Passing Frequencies on a Turbine’s Integral Mode Blade Vibration Detection Using a Pulsation Probe
For engines operating using heavy fuel oil (HFO), the nozzle rings of turbocharger turbines are prone to severe degradation because of contamination with unburned fuel deposits. This contamination may lead to increased excitation of blade resonance. A previous study provides technical guidelines on how to extract the relevant information from pulsation spectra using a single probe installed away from the turbine trailing edge and some sound experimental proofs of integral mode turbine vibration detection. These theoretical discussions only allude to the effects of mistuning and interferences due to classical blade passing frequencies on sound radiation patterns emitted by integral blade vibration modes. In this study, both effects are thoroughly discussed. Combining the knowledge of theoretical study and further experimental results, the application range of this blade vibration detection method can be remarkably extended.
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来源期刊
CiteScore
2.30
自引率
21.40%
发文量
29
审稿时长
11 weeks
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