ACOUSTIC AND VIBRATIONAL ANALYSES ON A MULTI-STAGE COMPRESSOR FOR UNSTABLE BEHAVIOR PRECURSOR IDENTIFICATION

机译：多级压缩机的声学和振动分析，用于不稳定的行为前兆识别

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The analysis of compressor behavior in critical working conditions, such as rotating stall and surge, represents a key aspect in the turbomachinery research field. In fact, both phenomena can lead to severe damage to the compression system and so the identification of unstable behaviour precursors is needed. The paper shows the test results of an experimental campaign conducted on a small size compressor with six axial stages and one centrifugal stage. In particular, the paper focuses on the analysis of acoustic and vibration measurements for both stationary conditions and for varying-over-time (I.e. gradually increasing) inlet mass flow rate. The correlation between compressor behavior in the operating region close to the surge line and vibration and acoustic measurements is investigated.

机译：压缩机在关键工作条件下的性能分析，例如旋转失速和喘振，代表了涡轮机械研究领域的关键方面。实际上，这两种现象都可能导致压缩系统的严重损坏，因此需要确定不稳定行为的前兆。本文显示了在具有六个轴向级和一个离心级的小型压缩机上进行的实验活动的测试结果。特别是，本文着重分析了在固定条件下以及随时间变化（即逐渐增加）的入口质量流量的声学和振动测量结果。研究了在接近喘振线的工作区域中压缩机行为与振动和声学测量之间的相关性。

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来源
《ASME(American Society of Mechanical Engineers) Turbo Expo vol.4 pt.B; 20070514-17; Montreal(CA)》|2007年|P.1415-1423|共9页
会议地点 Montreal(CA)
作者
M. Morini; M. Pinelli; M. Venturini;
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作者单位

Engineering Department in Ferrara (ENDIF) - University of Ferrara Via Saragat, 1-44100 Ferrara, Italy;

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原文格式 PDF
正文语种 eng
中图分类气体透平（涡轮机）;
关键词
A: axial, spectrum amplitude; BPF: blade passing frequency; C: centrifugal; f: frequency; M: mass flow rate; n: N/60 order number; N: rotational speed; P: power; P: absolute pressure; Q: volumetric flow rate; RH: relative humidity; r: N_C/N_E gearbox vel;

机译：A：轴向频谱幅度; BPF：叶片通过频率; C：离心; f：频率; M：质量流量; n：N / 60阶数; N：转速; P：功率; P：绝对压力; Q ：体积流量; RH：相对湿度; r：N_C / N_E变速箱vel;

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6. Assessment of the Impact of Shot-Peening on the Fatigue Life of a Compressor Blade Subjected to Resonance Vibrations [O] . Arkadiusz Bednarz, Wojciech Z. Misiolek 2020

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7. Part I. Analysis of a multi-stage axial compressor with high reaction blading. Part II. A design study of a multi-stage axial compressor with blading of high aspect ratio. [O] . Mauldin James H. 1963

机译：第一部分：具有高反应叶片的多级轴向压缩机的分析。第二部分高长径比叶片的多级轴流压缩机的设计研究。

ACOUSTIC AND VIBRATIONAL ANALYSES ON A MULTI-STAGE COMPRESSOR FOR UNSTABLE BEHAVIOR PRECURSOR IDENTIFICATION

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