Volume 28 Issue 1
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ZHANG Yan-chao, LIU Kai, ZHOU Lian-jie, HU Hai-tao. Analysis of leakage characteristics of finger seal based on system responses[J]. Journal of Aerospace Power, 2013, 28(1): 205-210.
Citation: ZHANG Yan-chao, LIU Kai, ZHOU Lian-jie, HU Hai-tao. Analysis of leakage characteristics of finger seal based on system responses[J]. Journal of Aerospace Power, 2013, 28(1): 205-210.
shu

Analysis of leakage characteristics of finger seal based on system responses

  • 1.

    School of Mechanical Instrumental Engineering, Xi'an University of Technology,Xi'an 710048,China

  • 2.

    The Research Laboratory of Mechanical System,China Gas Turbine Establishment, Aviation Industry Corporation of China,Chengdu 610500,China

  • Received Date: 2012-01-02
  • Publish Date: 2013-01-28
    Abstract
  • The current work obtained the seal rotor displacement excitation through studying the association rules of rotor speed,rotor unbalanced force and rotor runout based on dynamic working characteristics of finger seal.Then,a dynamic computational model of finger seal system was constructed.The leakage clearance computation method was researched according to the dynamic displacement response characteristics from the constructed model.Then the dynamic leakage calculation method was constructed and the leakage analysis work was conducted.The results preliminarily shows that dynamic displacement response changes with the rotor excitation time in every rotation period.The dynamic leakage clearance produced by dynamic displacement response also changes with the rotor excitation time.The results also indicate that leakage numerical size is affected by working conditions,installation conditions and the abrasion degree of finger boots.The method was validated by the computational example of a special engine and the comparison of calculating results and test data in references.The research work can provide valuable reference for dynamic performances design and study of finger seal.

     

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