Volume 36 Issue 8
Aug.  2021
Turn off MathJax
Article Contents
Article Navigation >  Journal of Aerospace Power  > 2021  >  36(8): 1783-1792
ZHOU Min, SUN Dan, ZHAO Huan, ZHI Qiang, ZHANG Guochen. Leakage characteristics and formula establishment of nonmetallic labyrinth seal based on fluid-solid-thermal coupling[J]. Journal of Aerospace Power, 2021, 36(8): 1783-1792. doi: 10.13224/j.cnki.jasp.20200467
Citation: ZHOU Min, SUN Dan, ZHAO Huan, ZHI Qiang, ZHANG Guochen. Leakage characteristics and formula establishment of nonmetallic labyrinth seal based on fluid-solid-thermal coupling[J]. Journal of Aerospace Power, 2021, 36(8): 1783-1792. doi: 10.13224/j.cnki.jasp.20200467
shu

Leakage characteristics and formula establishment of nonmetallic labyrinth seal based on fluid-solid-thermal coupling

doi: 10.13224/j.cnki.jasp.20200467

  • 1. Key Laboratory of Advanced Measurement and Test Technique for Aviation Propulsion System, Liaoning Province, School of Aero-engine, Shenyang Aerospace University, Shenyang 110136, China;

  • 2. Collaborative Innovation Center of Machine Manufacturing in Liaoning, Shenyang Blower Works Group Company Limited, Shenyang 110142, China

  • Received Date: 2020-11-02
  • Publish Date: 2021-08-28
    Abstract
  • Fluid-solid-thermal coupling numerical model of nonmetallic labyrinth seal leakage characteristics was established considering the deformation of tooth.The flow field, structure mechanical characteristics and leakage characteristics of polyether ether ketone (PEEK),30% carbon fiber-filled reinforced polyether ether ketone (PEEK-CA30) and aluminium alloy in three kinds of material labyrinth seal under different pressure ratios and temperature were studied on the basis of the validation to solve the model accuracy,and based on the formula for Vermes,the nonmetallic labyrinth leakage theory formula was constructed considering the deformation of tooth. The results showed that the fluid-solid-thermal coupling model of labyrinth seal can accurately calculate the deformation of nonmetallic seal teeth and the leakage rate. Among the three materials studied, PEEK-CA30 material had relatively small deformation of sealing teeth, accounting for 0.35%-0.67% of radial length of sealing teeth.Its sealing performance was good,and compared with the leakage rate without considering deformation of teeth,it only increased by 1.2%-6.8%. When the pressure ratio was more than 3 and the temperature was higher than 500 K,the equivalent stress of the seal teeth using aluminium alloy material reached the yield limit of the material, leading to the failure of the seal.The theoretical formula of leakage rate can accurately predict the leakage rate of nonmetallic labyrinth seal considering deformation of tooth,providing a theoretical basis for analysis of the leakage characteristics of nonmetallic labyrinth seal.

     

    • FullText(HTML)
  • loading
    • References(24)
  • [1]
    陈璐琪,张万福,顾乾磊,等. 光滑环形密封阻塞流动特性研究[J].中国电机工程学报,2018,38(22):6632-6640. CHEN Luqi, ZHANG Wanfu, GU Qianlei, et al. Research on the flow characteristics of smooth annular seal under choked flow conditions[J]. Proceedings of the CSEE, 2018, 38(22):6632-6640.(in Chinese)
    [2]
    李钰洁,刘永葆,贺星. 间隙变化对新型涡轮密封气动性能影响的数值分析[J].推进技术,2015,36(8):1179-1185. LI Yujie, LIU Yongbao, HE Xing.Numerical simulation for effects of clearance change of a novel seal on aerodynamic performance of gas turbine[J].Journal of Propulsion Technology,2015,36(8):1179-1185.(in Chinese)
    [3]
    张鹏,朱强,秦鹤勇,等. 航空发动机用耐高温材料的研究进展[J].材料导报,2014,28(11):27-31,37. ZHANG Peng, ZHU Qiang, QIN Heyong, et al. Research progress of high temperature materials for aero-engines[J]. Materials Reports,2014,28(11):27-31,37.(in Chinese)
    [4]
    JOHN K W, EDUARDO A, LESTER P. Thermoplastic labyrinth seal for centrifugal compressors[C]//Proceedings of 33rd Turbomachinery Symposium. College Station, TX, US:Texas A&M University, Turbomachinery Laboratories, 2004.
    [5]
    XU J,AMBROSIA M S,RHODE D L.Effect of tooth bending damage on the leakage of straight-through labyrinth seal[C]//Proceedings of ASME Fluids Engineering Division Summer Meeting.Houston,TX,USA:ASME,2005:119-124.
    [6]
    XU J. Effects of operating damage of labyrinth seal on seal leakage and wheelspace hot gas ingress[D].College Station, Texas,USA:Texas A&M University,2006.
    [7]
    陈尧兴,李志刚,晏鑫,等. 迷宫齿弯曲磨损时密封泄漏特性和转子动力特性系数研究[J]. 西安交通大学学报,2018, 52(6):157-164. CHEN Yaoxing, LI Zhigang, YAN Xin, et al.Investigations on the leakage characteristics and rotordynamic coefficients of labyrinth seal with tooth bending damage[J].Journal of Xi'an Jiaotong University,2018,52(6):157-164.(in Chinese)
    [8]
    陈尧兴,李志刚,晏鑫,等. 迷宫齿蘑菇形磨损时密封泄漏特性和转子动力特性系数研究[J]. 西安交通大学学报, 2018,52(1):40-46. CHEN Yaoxing, LI Zhigang, YAN Xin, et al. Investigation on the leakage performance and rotordynamic coefficients of labyrinth seal with mushroom-shaped tooth wear[J]. Journal of Xi'an Jiaotong University,2018,52(1):40-46.(in Chinese)
    [9]
    孙丹,卢江,王雯,等. 基于热力学效应的迷宫密封封严机理数值研究[J].热力透平,2018,47(3):175-181. SUN Dan,LU Jiang,WANG Wen,et al.Numerical investigations for sealing mechanism of labyrinth seals based on thermodynamic effect[J].Thermal Turbine,2018,47(3):175-181.(in Chinese)
    [10]
    汤赫男,鲁洁,王世杰. 齿形角对迷宫密封性能影响的流固耦合分析[J].润滑与密封,2015,40(10):36-40. TANG Henan,LU Jie,WANG Shijie.Fluid-structure interaction analysis of tooth profile angle effect on labyrinth seal performance[J].Lubrication Engineering,2015,40(10):36-40. (in Chinese)
    [11]
    汤赫男,鲁杰,王世杰. 往复式压缩机迷宫密封中空腔深度对泄漏量的影响分析[J].机械设计与制造,2017(3):122-124. TANG Henan,LU Jie,WANG Shijie.Analysis of the influence of cavity depth on the labyrinth seal leakage of reciprocating compressors[J]. Machinery Design and Manufacture, 2017(3):122-124.(in Chinese)
    [12]
    吴文健,应光耀,魏晨,等. 气流激振与转子系统的流固耦合计算[J].浙江电力,2017,36(1):43-46. WU Wenjian, YING Guangyao, WEI Chen, et al. Fluid-structure interaction computation of airstream excitation and rotor system[J].Zhejiang Electric Power, 2017, 36(1):43-46. (in Chinese)
    [13]
    张雨,张开林. 结构变形对高速齿轮箱直通式迷宫密封性能的影响分析[J].液压与气动,2019(3):14-18. ZHANG Yu, ZHANG Kailin. Influence of structural deformation on sealing performance of high-speed gearbox with straight-through labyrinth seal[J]. Chinese Hydraulics and Pneumatics,2019(3):14-18.(in Chinese)
    [14]
    MARTIN S. Exploring the grants labyrinth[J]. Estates Gazette,2002(246):131-131.
    [15]
    EGLI A. The leakage of gases through narrow channels[J]. Journal of Applied Mechanics,1937,4(2):63-68.
    [16]
    VERMES G. A fluid mechanics approach to the labyrinthseal leakage problem[J]. Journal of Engineering for Power, 1961,83(2):161-169.
    [17]
    胡东旭,贾力,杨立新. 篦齿封严泄漏特性的实验[J]. 航空动力学报,2014,29(3):549-555. HU Dongxu, JIA Li, YANG Lixin. Experiment on leakage characteristics in labyrinth seal[J].Journal of Aerospace Power,2014,29(3):549-555.(in Chinese)
    [18]
    孙丹,邹静岚,赵欢,等. 实际气体参数对迷宫密封静力与动力特性影响机理研究[J]. 动力工程学报,2020,40(1):14-22,30. SUN Dan, ZOU Jingluan, ZHAO Huan, et al. Influence mechanism of real gas parameters on static and dynamic characteristics of labyrinth seals[J]. Journal of Chinese Society of Power Engineering,2020,40(1):14-22,30.(in Chinese)
    [19]
    王福军.计算流体动力学分析-CFD软件的原理与应用[M]. 北京:清华大学出版社, 2004:10-11.
    [20]
    张小伟,王延荣,张潇,等. 涡轮机械叶片的流固耦合数值计算方法[J].航空动力学报,2009,24(7):1622-1626. ZHANG Xiaowei, WANG Yanrong, ZHANG Xiao, et al. Numerical method for fluid-structure interaction in turbomachinery bladings[J].Journal of Aerospace Power,2009,24(7):1622-1626.(in Chinese)
    [21]
    魏炫宇,马咏梅,丁万,等. 机械密封摩擦副界面热流固耦合分析[J].机械设计与制造工程,2017,46(6):89-94. WEI Xuanyu,MA Yongmei,DING Wan, et al. The thermal fluid and solid coupling analysis on the friction surface of mechanical seal[J].Machine Design and Manufacturing Engineering,2017,46(6):89-94.(in Chinese)
    [22]
    马灵童,孟庆睿. 液黏传动摩擦副流固耦合传热分析[J]. 润滑与密封,2019,44(10):98-103. MA Lingtong, MENG Qingrui. Analysis of fluid-solid coupled heat transfer of friction pairs on hydro -viscous drive[J]. Lubrication Engineering,2019,44(10):98-103.(in Chinese)
    [23]
    TOSHIO H,GUO Zenglin,KIRK R G.Application of com-putation fluid dynamicanalysis for rotating machinery:Part Ⅱ labyrinth seal analysis[J].Journal of Engineering for Gas Turbines and Power,2005,127(4):820-826.
    [24]
    饶先花,曹民,代惊奇,等. 国内外特种工程塑料聚芳醚酮的生产、应用及发展前景[J].塑料工业,2012,40(9):18-22. RAO Xianhua, CAO Min, DAI Jingqi, et al.Production, application and development prospects of special engineering plastic polyaryletherketone at home and abroad[J].China Plastics Industry,2012,40(9):18-22.(in Chinese)
    • Relative Articles
    • Supplements(0)
    • Cited By
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索
    Get Citation
    PDF(3715.0KB)
    XML

    Article Metrics

    Article views (557) PDF downloads(291) Cited by()
    Proportional views
    Related

    Copyright © 《Journal of Aerospace Power》 All Rights Reserved.

    Supported by: Beijing Renhe Information Technology Co., Ltd.  

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return