噪声与振动控制

›› 2010, Vol. 30 ›› Issue (4): 81-84.DOI: 10.3969/j.issn.1006-1355.2010.04.022

• 信号处理与故障诊断 • 上一篇    下一篇

《某型航空发动机台架试车异常振动故障诊断》

秦海勤1，徐可君1，刘忠华2，王永旗3   

  1. 1.海军航空工程学院青岛分院航空机械系,山东青岛266041； 2.西安航空发动机（集团）有限公司,西安710021；3.92514部队,山东烟台264007）
  • 收稿日期:2009-09-21 修回日期:1900-01-01 出版日期:2010-08-18 发布日期:2010-08-18
  • 通讯作者: 秦海勤

《Fault Diagnosis of Abnormal Vibration in Aero Engine Bench Test》

QIN Hai-qin1,XU Ke-jun1,LIU Zhong-hua2,WANG Yong-qi3   

  1. (1.Department of Aviation Mechanism, Qingdao Branch of Naval Aviation Engineering Institute, Qingdao Shandong 266041, China;2.Xian Aero Engine(Group) Ltd, Xian 710021, China; 3. 92514 Army, Yantai Shandong 264007, China)
  • Received:2009-09-21 Revised:1900-01-01 Online:2010-08-18 Published:2010-08-18
  • Contact: QIN Hai-qin

摘要： 基于某型航空发动机机匣实测振动信号的分析和该型发动机结构特点的剖析，对该型发动机某次试车振动异常现象进行了研究。研究结果表明，低压涡轮支承间隙和偏心量差是引起异常振动的主要故障原因。同时表明，结合现代信号处理技术和正确的分析思路，能够较为快速准确地定位故障，避免盲目的分解检查。

关键词: 振动与波, 航空发动机, 故障诊断, 结构系统, 振动信号分析

Abstract: Based on the analysis of vibration signal measured in an aeroengines case testing and the analysis of the structural characteristics of the aeroengine, the abnormal vibration in bench test is studied. The result shows that the clearance and eccentricity of the bearing system of the lowpressure turbine are the main contribution to the abnormal vibration. It also shows that combining modern signal process technique with pertinent analysis method, the fault in aeroengine can be located quickly and accurately.

Key words: vibration and wave, aero engine, fault diagnosis, structural system, vibration signal analysis

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