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周向收敛与人字槽组合型指尖密封结构与性能分析

吕文洋 苏华

吕文洋, 苏华. 周向收敛与人字槽组合型指尖密封结构与性能分析[J]. 机械科学与技术, 2015, 34(11): 1641-1647. doi: 10.13433/j.cnki.1003-8728.2015.1101
引用本文: 吕文洋, 苏华. 周向收敛与人字槽组合型指尖密封结构与性能分析[J]. 机械科学与技术, 2015, 34(11): 1641-1647. doi: 10.13433/j.cnki.1003-8728.2015.1101
Su Hua, . Analysis of Structure and Performance of Finger Seal Combined with Circumferential Convergent Boots and Herringbone-groove[J]. Mechanical Science and Technology for Aerospace Engineering, 2015, 34(11): 1641-1647. doi: 10.13433/j.cnki.1003-8728.2015.1101
Citation: Su Hua, . Analysis of Structure and Performance of Finger Seal Combined with Circumferential Convergent Boots and Herringbone-groove[J]. Mechanical Science and Technology for Aerospace Engineering, 2015, 34(11): 1641-1647. doi: 10.13433/j.cnki.1003-8728.2015.1101

周向收敛与人字槽组合型指尖密封结构与性能分析

doi: 10.13433/j.cnki.1003-8728.2015.1101
基金项目: 

国家自然科学基金项目(51575445)与陕西省自然科学研究计划项目(2014JM7266)资助

详细信息
    作者简介:

    吕文洋(1989-),硕士研究生,研究方向为指尖润滑与密封,290307128@qq.com

    通讯作者:

    苏华,副教授,硕士生导师,博士,huasu@nwpu.edu.cn

Analysis of Structure and Performance of Finger Seal Combined with Circumferential Convergent Boots and Herringbone-groove

  • 摘要: 针对流体动压型指尖密封结构和工作特点,建立了具有周向收敛靴和轴上人字槽组合结构特征的指尖密封(简称组合型指尖密封)结构形式,采用流固耦合数值分析方法,分析了不同结构和工况条件下组合型指尖密封的泄漏率、气膜承载力及气膜流场特征,详细讨论了密封各结构参数变化对组合型指尖密封性能的影响。结果表明:在通常工况范围内,压力流对组合型指尖密封性能的影响占主导地位;楔形气膜膜厚比、楔形气膜径向最小厚度对组合型密封泄漏率影响最大;人字槽偏离高压片的距离、槽纵向间距和槽宽对组合型指尖密封的性能影响较为明显。与现有人字槽型指尖密封和周向收敛型指尖密封的性能相比,组合型指尖密封气膜承载力明显高于人字槽型指尖密封;其泄漏率与周向收敛型指尖密封相当而气膜承载力较大,具有较好的综合性能优势。
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出版历程
  • 收稿日期:  2013-12-02
  • 刊出日期:  2015-11-05

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