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指尖密封/转子系统密封力的一种计算方法

侯国强 汪杨 陈国定 苏华

侯国强, 汪杨, 陈国定, 苏华. 指尖密封/转子系统密封力的一种计算方法[J]. 机械科学与技术, 2018, 37(11): 1641-1649. doi: 10.13433/j.cnki.1003-8728.20180127
引用本文: 侯国强, 汪杨, 陈国定, 苏华. 指尖密封/转子系统密封力的一种计算方法[J]. 机械科学与技术, 2018, 37(11): 1641-1649. doi: 10.13433/j.cnki.1003-8728.20180127
Hou Guoqiang, Wang Yang, Chen Guoding, Su Hua. A Method of Calculating Seal Force of Finger Seal/Rotor System[J]. Mechanical Science and Technology for Aerospace Engineering, 2018, 37(11): 1641-1649. doi: 10.13433/j.cnki.1003-8728.20180127
Citation: Hou Guoqiang, Wang Yang, Chen Guoding, Su Hua. A Method of Calculating Seal Force of Finger Seal/Rotor System[J]. Mechanical Science and Technology for Aerospace Engineering, 2018, 37(11): 1641-1649. doi: 10.13433/j.cnki.1003-8728.20180127

指尖密封/转子系统密封力的一种计算方法

doi: 10.13433/j.cnki.1003-8728.20180127
基金项目: 

国家自然科学基金项目(51575445)与陕西省自然科学基金项目(2014JM7266)资助

详细信息
    作者简介:

    侯国强(1989-),博士研究生,研究方向为密封技术,hgq2017@mail.nwpu.edu.cn

    通讯作者:

    陈国定,教授,博士生导师,gdchen@nwpu.edu.cn

A Method of Calculating Seal Force of Finger Seal/Rotor System

  • 摘要: 指尖密封作为转子系统中组成部件,其与转子之间的相互力学作用对系统动态特性会产生影响。从系统的观点研究提出指尖密封密封力的计算方法,是构建和开展转子系统动力学模型和相关动力学分析的基础工作。本文首先通过流固耦合分析实现了嵌入指尖密封结构效应的指尖密封气膜刚度与气膜阻尼计算,构建了指尖密封气膜刚度和气膜阻尼拟合公式,在此基础上结合指尖密封-转子的接触处理,建立指尖密封/转子相互作用力学模型,提出了一种适用于转子系统动态分析的指尖密封密封力的计算方法,并通过算例实施了指尖密封密封力计算流程,同时探讨了密封力与密封工况条件的关系。计算结果表明:指尖密封气膜刚度随密封压力差增大而增大,转子转速对气膜刚度的影响很小;指尖密封气膜阻尼随密封压力差和转子转速的增大而减小。接触区的密封力随转子涡动幅值增大而增大,但基本不随转子转速变化,非接触区的密封力随转子涡动幅值的增大而减小,随着转子转速增大而增大。指尖密封的密封力随时间呈周期性变化,密封力变化频率随转子转频增加而增加。
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出版历程
  • 收稿日期:  2018-01-01
  • 刊出日期:  2018-11-05

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