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凹槽射流对袋型阻尼密封泄漏特性与动力特性影响机理

郭金道 孙丹 赵欢 肖忠会 孟继纲 胡永

郭金道, 孙丹, 赵欢, 肖忠会, 孟继纲, 胡永. 凹槽射流对袋型阻尼密封泄漏特性与动力特性影响机理[J]. 航空动力学报, 2022, 37(2): 308-319. doi: 10.13224/j.cnki.jasp.20210021
引用本文: 郭金道, 孙丹, 赵欢, 肖忠会, 孟继纲, 胡永. 凹槽射流对袋型阻尼密封泄漏特性与动力特性影响机理[J]. 航空动力学报, 2022, 37(2): 308-319. doi: 10.13224/j.cnki.jasp.20210021
GUO Jindao, SUN Dan, ZHAO Huan, XIAO Zhonghui, MENG Jigang, HU Yong. Mechanism of influence of notch jet-flow on leakage and rotordynamic characteristics of pocket damper seals[J]. Journal of Aerospace Power, 2022, 37(2): 308-319. doi: 10.13224/j.cnki.jasp.20210021
Citation: GUO Jindao, SUN Dan, ZHAO Huan, XIAO Zhonghui, MENG Jigang, HU Yong. Mechanism of influence of notch jet-flow on leakage and rotordynamic characteristics of pocket damper seals[J]. Journal of Aerospace Power, 2022, 37(2): 308-319. doi: 10.13224/j.cnki.jasp.20210021

凹槽射流对袋型阻尼密封泄漏特性与动力特性影响机理

doi: 10.13224/j.cnki.jasp.20210021
基金项目: 国家自然科学基金(52075346,51675351); 辽宁省自然科学基金(2019-ZD-0236);辽宁省教育厅基础研究项目(JYT2020047)
详细信息
    作者简介:

    郭金道(1998-),男,硕士生,主要研究方向为涡轮机械动密封动力特性。

    通讯作者:

    孙丹(1981-),男,教授,博士,主要从事涡轮机械先进密封技术研究。E-mail:phd_sundan@163.com

  • 中图分类号: V233.5

Mechanism of influence of notch jet-flow on leakage and rotordynamic characteristics of pocket damper seals

  • 摘要: 采用非定常动网格技术建立了袋型阻尼密封泄漏特性和动力特性多频椭圆涡动求解模型,在验证求解模型准确性的基础上,研究了压比、转速和凹槽位置不同时凹槽射流对袋型阻尼密封泄漏特性与动力特性的影响,分析了袋型阻尼密封轴向与周向的流速和压力分布特性,揭示了凹槽射流对袋型阻尼密封泄漏特性和动力特性的影响机理。研究表明:凹槽射流增强了袋型阻尼密封直通效应,削弱了基本腔室内气流动能的耗散作用,增大了泄漏量,当压比由2增至6.9时,相比无凹槽袋型阻尼密封,有凹槽袋型阻尼密封泄漏量增大11.75%~12.67%。凹槽射流可减小袋型阻尼密封交叉刚度,增大直接阻尼和有效阻尼,且转子低频(频率小于120 Hz)涡动时效果更显著;凹槽射流可抑制下游腔室内气流的周向流动,降低周向压差,使周向压力分布更均匀,提高转子稳定性;凹槽结构参数相同时,基本腔室出口密封齿周向二等分点为最佳凹槽位置,此时袋型阻尼密封具有最小交叉刚度、最大直接阻尼和有效阻尼。

     

  • [1] 曹树谦,陈予恕.现代密封转子动力学研究综述[J].工程力学,2009,26(增刊Ⅱ):68-79.
    [2] ELDRIDGE T M,SOULAS T A.Mechanism and impact of damper seal clearance divergence on the rotordynamics of centrifugal compressors[R].ASME Paper GT2005-69104,2005.
    [3] 苏华,陈国定.指尖密封的温度场及热结构耦合分析[J].航空动力学报,2009,24(1):196-203.
    [4] VANCE J M,SCHULTZ R R.New damper seal for turbomachinery[C]∥Proceedings of 14th Vibration and Noise Conference.Albuquerque,US:ASME,1993:139-148.
    [5] 于萍.工程流体力学[M].北京:科学出版社,2015.
    [6] LAOS H E.Rotordynamic effect of pocket damper seals[D].College Station,US:Texas A&M University,1999.
    [7] SHENG N,RUGGIERO E J,DEVI R,et al.Experimental and analytical leakage characterization of annular gas seals:honeycomb,labyrinth and pocket damper seals[C]∥Proceedings of Turbine Technical Conference and Exposition.Vancouver,Canada:American Society of Mechanical Engineers,2011:723-729.
    [8] CHILDS D W,WADE J.Rotordynamic-coefficient and leakage characteristics for hole-pattern-stator annular gas seals-measurements versus predictions[J].Journal of Tribology,2004,126(2):326-333.
    [9] GAMAL A M,ERTAS B H,VANCE J M.High-pressure pocket damper seals:leakage rates and cavity pressures[J].Journal of Turbomachinery.2006,129(4):1303-1312.
    [10] LI Zhigang,LI Jun,FENG Zhenping,et al.Numerical investigations on the leakage flow characteristics of pocket damper seals[R].ASME Paper GT2011-45114,2011.
    [11] 李志刚,李军,丰镇平.高转速袋型阻尼密封泄漏的特性[J].航空动力学报,2012,27(12):193-200.
    [12] KANNAN S B.Development and validation of an analytical model for the notched pocket damper seal[D].College Station,US:Texas A&M University,2004.
    [13] LI J,AGUILAR R,ANDRES L S,et al.Dynamic force coefficients of a multiple-blade,multiple-pocket gas damper seal:test results and predictions[J].Journal of Tribology,2000,122(1):317-322.
    [14] ELDIN G,MOHAMED A.Leakage and rotordynamic effects of pocket damper seals and see-through labyrinth seals[D].College Station,US:Texas A&M University.2007.
    [15] 孙丹,李胜远,艾延廷,等.袋型阻尼密封动力特性分析及对转子稳定性的影响[J].中国电机工程学报,2018,38(12):3621-3628.
    [16] 李志刚,陈尧兴,李军.高偏心率下旋转密封泄漏特性和静态动力特性研究[J].西安交通大学学报,2017,51(7):1-5.
    [17] 张万福,马凯,潘渤,等.基于变厚度挡板的新型渐扩/渐缩袋型阻尼密封动力特性研究[J].热能动力工程,2020,35(5):24-33.
    [18] ERTAS B.Rotordynamic force coefficients of pocket damper seals[D].College Station,US:Texas A&M University College Station,2005.
    [19] PUGACHEV A O,GRIEBEL C,TIBOS S,et al.Performance analysis of hybrid brush pocket damper seals using computational fluid dynamics[C]∥Proceedings of Turbomachinery Technical Conference and Exposition.Seoul,Korea:American Society of Mechanical Engineers 2016:233-240.
    [20] GRIEBEL C.Impact analysis of pocket damper seal geometry variations on leakage performance and rotordynamic force coefficients using computational fluid dynamics[J].Journal of Engineering for Gas Turbines and Power,2019,141(4):041024.1-041024.9.
    [21] CHILDS D.Turbomachinery rotordynamics:phenomena,modeling,and analysis[M].New York:John Wiley & Sons,1993.
    [22] CHILDS D W,WADE J.Rotordynamic coefficient and leakage characteristics for hole-pattern-stator annular gas seals-measurements versus predictions[J].Journal of Tribology,2004,126(2):326-333.
    [23] ERTAS B H,DELGADOA,VANNINI G.Rotordynamic force coefficients for three types of annular gas seals with inlet preswirl and high differential pressure ratio[J].Journal of Engineering for Gas Turbines and Power,2012,134(4):42501-42503.
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出版历程
  • 收稿日期:  2021-01-16
  • 刊出日期:  2022-02-28

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