Volume 31 Issue 7
Jul.  2016
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KONG Xiao-zhi, LIU Gao-wen, LEI Zhao, CHANG Ran, LIU Yang. Experiment on influence of rotational speeds on labyrinth seal in compressor stator well[J]. Journal of Aerospace Power, 2016, 31(7): 1575-1582. doi: 10.13224/j.cnki.jasp.2016.07.005
Citation: KONG Xiao-zhi, LIU Gao-wen, LEI Zhao, CHANG Ran, LIU Yang. Experiment on influence of rotational speeds on labyrinth seal in compressor stator well[J]. Journal of Aerospace Power, 2016, 31(7): 1575-1582. doi: 10.13224/j.cnki.jasp.2016.07.005

Experiment on influence of rotational speeds on labyrinth seal in compressor stator well

doi: 10.13224/j.cnki.jasp.2016.07.005
  • Received Date: 2015-11-02
  • Publish Date: 2016-07-28
  • A rotating experiment rig with high rotational speeds was designed for the experiment of labyrinth seal in a compressor stator well. The influences of rotational speed (1500-8100r/min) on the working tip clearance, leakage characteristic, windage heating and swirl characteristics at different pressure ratios (1.05-1.30) were studied. Results show that the working tip clearance decreases and the mass flow rate declines with the increasing of the rotational speed. For low pressure ratios, increasing the rotational speed results in falling discharge coefficient, while the variation of discharge coefficient is relatively small for high pressure ratios. The windage heating of system increases as the rotational speed increases. Higher rotational speed gives much larger temperature rise. In addition, it is obvious that increasing the rotational speed leads to an increase of the swirl ratio at a specific radial location. However, the swirl ratio shows a decrease with increasing radius in the outlet cavity.

     

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