Fault Identification of Rotor Partly Filled with Liquid on Aero-Engine

被引：0
|
作者：
Wang Y.-K. [1 ]
Shao Z.-D. [1 ]
Liao M.-F. [1 ]
Wang X. [1 ]
机构：
[1] School of Power and Energy, Northwestern Polytechnical University, Xi'an
来源：
Tuijin Jishu/Journal of Propulsion Technology | 2020年 / 41卷 / 06期
关键词：
Aero-engine; Diagnostic process; Identification criteria; Monitoring method; Rotor partly filled with liquid; Vibration characteristics;
D O I：
10.13675/j.cnki.tjjs.190187
中图分类号：
学科分类号：
摘要：
For the difficulties in monitoring and diagnosing the aero-engine liquid fault, this paper divided the liquid fault into early liquid fault and serious liquid fault and analyzed the vibrations features respectively. Firstly, the influence law of unbalanced quantity and early liquid on rotor vibration was studied. Based on the area distribution characteristics of the amplitude-frequency characteristic curve, one identification criterion for early liquid was proposed. Then, the instability vibration characteristics of serious liquid rotor was analyzed. It was found that the instability due to serious liquid occurred, there would be a sudden increase of vibration amplitude and sub-harmonic even beat vibration. Based on the characteristics, three identification criterions for serious liquid were proposed. Finally, a complete monitoring method and diagnostic process of liquid fault was proposed, which could provide early warning before instability and avoid fault from getting worse. 30 sets of experimental data were selected for verification. The results show that the accuracy of the method proposed is 96%, which has engineering application value. © 2020, Editorial Department of Journal of Propulsion Technology. All right reserved.
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页码：1371 / 1378
页数：7
相关论文
共 19 条
  • [1] 2
  • [2] 15, 4
  • [3] Han Q, Wang M, Chu H., Nonsynchronous Vibrations of Rotor System with an Oil-Block Inside the Rotating Drum[J], Advances in Vibration Engineering, 12, 2, pp. 165-178, (2013)
  • [4] 39, 1
  • [5] 2, pp. 5-9, (1999)
  • [6] 1
  • [7] (2010)
  • [8] 17, 2
  • [9] Nikiforov A N., Self-Excitation of an Experimental Rotor with Radial Walls and Filled Partially with Liquid, Journal of Machinery Manufacture & Reliability, 44, 3, pp. 200-203, (2015)
  • [10] Firouz-Abadi R D, Permoon M R., Effect of Liquid Viscosity on Instability of High-Spinning Partially-Filled Shell Rotors, International Journal of Structural Stability and Dynamics, 13, 6, (2013)
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