• CN：11-2187/TH
  • ISSN：0577-6686
机械工程学报

›› 2003, Vol. 39 ›› Issue (4): 124-127.

• 论文 • 上一篇    下一篇

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螺旋槽干运行非接触气体密封的理论分析与试验

徐万孚;刘雨川;李广宇;徐礼富;沈心敏   

  1. 沈阳工业学院润滑技术研究中心;清华大学;沈阳工业学院;北京航空航天大学
  • 发布日期:2003-04-15

THEORETICAL ANALYSIS AND EXPERIMENTAL INVESTIGATION OF SPIRAL GROOVE DRY RUNNING NONCONTACTING GAS SEALS

Xu Wanfu;Liu Yuchuan;Li guangyu;Xu lifu;Shen Xinmin   

  1. Shenyang Institute of Technology Tsinghua University Beijing University of Aeronautics and Astronautics
  • Published:2003-04-15

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摘要： 设计制造了“W?ndef 288型”螺旋槽干运行非接触气体密封(线速度111.4 m/s、温度110 ℃)，并进行了动态与稳定性分析、特别是角向半频自激振动及共振振荡的理论分析。工业模拟运行了近3 000 h(100余次起停)，上万的测试数据表明了其优异的性能。

关键词: 半频自激振动, 螺旋槽密封, 气膜振荡, 稳定性

Abstract: Spiral groove dry running non-contacting gas seals named after“Wlndef 288 type” is designed and manufactured. Its angular wobbly self-excited whirl with “half-frequency” and the gas film resonant whip is analyzed. The commercial DGS is tested for 3 000 h nearly(to start-up and stop for 100 time), Its property is excellent by description of experimental investigation data.

Key words: Gas film resonant whip, Self-excited whirl with “half-frequency”, Spiral groove dry running gas seals, Stability

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