化工学报 ›› 2020, Vol. 71 ›› Issue (7): 3220-3228.doi: 10.11949/0438-1157.20191501

• 表面与界面工程 • 上一篇    下一篇

柱面密封气膜动压效应模拟及试验

俞树荣(),丁俊华(),王世鹏,刘红,丁雪兴,孙宝财   

  1. 兰州理工大学石油化工学院，甘肃 兰州 730050
  • 收稿日期:2019-12-09 修回日期:2020-03-23 出版日期:2020-07-05 发布日期:2020-07-05
  • 通讯作者: 丁俊华 E-mail:yusr@lut.edu.cn;13919104516@163.com
  • 作者简介:俞树荣（1962—），男，博士，教授，yusr@lut.edu.cn
  • 基金资助:
    国家自然科学基金项目(51565029)

Simulation and analysis of dynamic pressure effect of gas film on cylinder seal

Shurong YU(),Junhua DING(),Shipeng WANG,Hong LIU,Xuexing DING,Baocai SUN   

  1. College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou 730050, Gansu, China
  • Received:2019-12-09 Revised:2020-03-23 Published:2020-07-05 Online:2020-07-05
  • Contact: Junhua DING E-mail:yusr@lut.edu.cn;13919104516@163.com

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摘要：

航空发动机柱面密封常因动压不足导致浮环碰磨而破裂。据此利用Fluent软件对现役柱面无槽气膜和螺旋槽气膜两种模型进行了流场动压数值模拟，并进行试验验证。研究结果表明：对于无槽气膜模型，增大偏心率、转速和压差，密封动压效应增强。偏心率和压差的增大会提高模型泄漏率，但转速的改变对模型泄漏率的影响很小；对于螺旋槽气膜密封，增大偏心率、转速和压差，气膜浮升力提升。随偏心率和压差的增大，模型泄漏率随之升高。综合以上两条结论可得，转速是影响泄漏率的次要因素；螺旋槽模型相对无槽模型，动压效果好，泄漏率小，相同工况下具有更好的动压效应，此研究对于研发更优的柱面密封结构有重要参考意义。

关键词: 柱面密封, 气膜, 动压效应, 试验验证, 数值模拟

Abstract:

For aeroengine cylinder seals, the floating ring is often broken due to insufficient dynamic pressure, which causes the floating ring to rub against. Based on this, the Fluent software is used to simulate the flow field of two kinds of models, namely, the existing cylindrical grooved gas film and the spiral grooved gas film, and carry out with test verification. The results show that for the grooveless gas film model, increasing the eccentricity, rotation speed and pressure difference will increase the dynamic pressure effect of the seal. The increase of eccentricity and pressure difference will increase the leakage of the model, but the change of rotation speed has little effect on the leakage of the model; for spiral groove gas film seal, the increase of eccentricity, rotation speed and pressure difference will increase the buoyancy of the gas film. With the increase of eccentricity and pressure difference, the leakage of the model increases. Based on the above two conclusions, it can be concluded that the speed is the secondary factor affecting the leakage; the spiral groove model has better dynamic pressure effect and less leakage compared with the grooveless model, so it can reduce the friction of floating ring. Therefore, this study has important reference significance for the development of better cylindrical seal structure.

Key words: cylinder seal, gas film, dynamic pressure effect, test verification, numerical simulation

中图分类号: 

  • TH 117.2

图1

柱面气膜密封简化几何模型"

表1

两种柱面气膜密封结构参数"

参数符号无槽模型数值螺旋槽模型数值
轴套外半径Rz/mm29.229.2
密封宽度L/mm55
密封半径间隙C/μm1515
槽宽比B—1:1
槽数N—16
螺旋角β/(°)—30
槽长Lc/mm—4
槽深E/μm—8

图3

柱面气膜密封网格划分局部放大示意图"

图2

柱面密封气膜模拟仿真计算流程图"

图4

网格无关性验证参数对比图"

图5

试验系统布置图"

图6

密封环结构"

图7

泄漏率随转速的变化曲线"

图8

泄漏率随压差的变化曲线"

图10

偏心率对两种槽型泄漏率的影响"

图11

偏心率对两种槽型浮升力的影响"

图9

气膜压力云图"

图12

转速对两种槽型泄漏率的影响"

图13

转速对两种槽型浮升力的影响"

图14

压差对两种槽型泄漏率的影响"

图15

压差对两种槽型浮升力的影响"

1 王泓然, 张栋善. 航空发动机密封技术研究[J]. 科学咨询(科技·管理), 2018, 589(6): 52-52.
Wang H R, Zhang D S. Research on sealing technology of aeroengine[J]. Scientific Consulting (Science and Technology Management), 2018, 589(6): 52-52.
2 马纲, 沈心敏. 先进气膜密封技术研究进展与分析[J]. 航空制造技术, 2009, 3: 58-61.
Ma G, Shen X M. Research progress and analysis of advanced gas film sealing technology[J]. Aviation Manufacturing Technology, 2009, 3: 58-61.
3 Dunlap P H J. An overview of advanced elastomeric seal development and testing capabilities at NASA Glenn research center[C]// AIAA/ASME/SAE/ASEE Joint Propulsion Conference. 2015.
4 Ha T W, Lee Y B, Kim C H. Leakage and rotordynamic analysis of a high pressure floating ring seal in the turbo pump unit of a liquid rocket engine[J]. Tribology International, 2002, 35(3): 153-161.
5 Li G, Zhang Q, Huang E, et al. Leakage performance of floating ring seal in cold/hot state for aero-engine[J]. Chinese Journal of Aeronautics, 2019, 32(9): 2085-2094.
6 Vohr J H, Chow C Y. Characteristics of herringbone-grooved, gas-lubricated journal bearings[J]. Asme. J. Basic Eng., 1964, 87(3): 568-576.
7 Miyanaga N, Tomioka J. Effect of support stiffness and damping on stability characteristics of herringbone-grooved aerodynamic journal bearings mounted on viscoelastic supports[J]. Tribology International, 2016, 100: 195-203.
8 Zhu H T, Ding Q. Numerical analysis of static characteristics of herringbone grooved hydrodynamic journal bearing[J]. Applied Mechanics and Materials, 2011, 105/106/107: 2259-2262.
9 于贺春. 高速静压气体轴承—转子系统的特性研究[D]. 大连：大连海事大学, 2011.
Yu H C. Study on the characteristics of high speed hydrostatic gas bearing rotor system[D]. Dalian：Dalian Maritime University, 2011.
10 马纲, 徐万孚, 徐广州, 等. 建立雷诺方程的一种新概念[J]. 润滑与密封, 2006, 9: 36-39+43.
Ma G, Xu W F, Xu G Z, et al. A new concept of establishing Reynolds equation[J]. Lubrication and Sealing, 2006, 9: 36-39+43.
11 Mel’nik V A. Calculating leaks in rotor-machine radial slot seals. Part 1. Method based on calculated and empirical local pressure loss coefficients[J]. Chemical and Petroleum Engineering, 2009, 45(9/10): 570-576.
12 Mel’nik V A. Calculation of the characteristics of seals with floating rings[J]. Chemical and Petroleum Engineering, 2013, 49(7/8): 542-548.
13 马纲, 何军, 栗秀花, 等. 柱面气膜密封动力特性系数的数值计算[J]. 机械工程学报, 2013, 49(5): 55-62.
Ma G, He J, Li X H, et al. Numerical calculation of dynamic characteristic coefficient of cylindrical gas film seal[J]. Journal of Mechanical Engineering, 2013, 49(5): 55-62.
14 马纲, 何军, 孙晓军, 等. 非线性数值模拟柱面气膜密封动态特性[J]. 航空动力学报, 2014, 29(1): 1-8.
Ma G, He J, Sun X J, et al. Nonlinear numerical simulation of dynamic characteristics of cylindrical gas film seal [J]. Journal of Aeronautical Dynamics, 2014, 29(1): 1-8.
15 Ma G, Li X H, Shen X M. Multi-dimensional optimization of groove parameters in gas film seal[J]. Advanced Materials Research, 2011, 199/200: 1303-1307.
16 丁雪兴, 贺振泓, 张伟政, 等. 柱面螺旋槽干气密封微尺度流动场稳态近似计算[J]. 应用力学学报, 2018, 35(1): 99-105+230.
Ding X X, He Z H, Zhang W Z, et al. Steady state approximate calculation of micro scale flow field in cylindrical spiral groove dry gas seal[J]. Journal of Applied Mechanics, 2018, 35(1): 99-105 + 230.
17 丁雪兴, 贺振泓, 张伟政, 等. 柱面螺旋槽气膜密封微尺度流动场稳态特性分析[J]. 化工学报, 2017, 69(4): 1537-1546.
Ding X X, He Z H, Zhang W Z, et al. Analysis of steady state characteristics of micro scale flow field in cylindrical spiral groove gas film seal[J]. CIESC Journal, 2017, 69(4): 1537-1546.
18 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.
19 Wu D Z, Jiang X K, Li S, et al. A new transient CFD method for determining the dynamic coefficients of liquid annular seals[J]. Journal of Mechanical Science & Technology, 2016, 30(8): 3477-3486.
20 Wu D Z, Jiang X K, Chu N, et al. Numerical simulation on rotordynamic characteristics of annular seal under uniform and non-uniform flows[J]. Journal of Central South University, 2017, 24(8): 1889-1897.
21 马纲, 杨卫如. 双向旋转柱面气膜密封性能数值模拟与参数优化[J]. 北京航空航天大学学报, 2016, 42(11): 2279-2288.
Ma G, Yang W R. Numerical simulation and parameter optimization of gas film sealing performance of two-way rotating cylinder[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(11): 2279-2288.
22 马纲, 罗先海, 沈心敏. 端柱面组合气膜密封系统稳态特性数值模拟与分析[J]. 航空动力学报, 2015, 30(1): 22-28.
Ma G, Luo X H, Shen X M. Numerical simulation and analysis of steady-state characteristics of end cylinder combined gas film seal system [J]. Journal of Aeronautical Dynamics, 2015, 30(1): 22-28.
23 苏泽辉, 刘美红. T型槽柱面气膜密封CFD数值分析[J]. 流体机械, 2016, 44(7): 33-37.
Su Z H, Liu M H. CFD numerical analysis of T-groove cylindrical gas film seal[J]. Fluid Machinery, 2016, 44(7): 33-37.
24 苏泽辉, 刘美红. T型槽柱面气膜密封稳态性能数值分析[J]. 机械与电子, 2015, 12: 41-44.
Su Z H, Liu M H. Numerical analysis of steady-state performance of T-groove cylinder gas film seal[J]. Mechatronics, 2015, 12: 41-44.
25 张学清. 高温微气体动压轴承非等温气膜动力特性及箔片固体润滑涂层研究[D]. 重庆: 重庆大学, 2016.
Zhang X Q. Study on dynamic characteristics of non-isothermal gas film and foil solid lubricating coating of high temperature micro-gas dynamic pressure bearing [D]. Chongqing: Chongqing University, 2016.
26 赵广, 于贺春, 马文琦, 等. 转子-气体轴承-弹性支承系统研究综述[J]. 润滑与密封, 2010, 35(11): 115-122+106.
Zhao G, Yu H C, Ma W Q, et al. Review of rotor gas bearing elastic support system[J]. Lubrication and Sealing, 2010, 35(11): 115-122+106.
27 赵良举, 苏晓燕, 杜长春, 等. 旋转唇形油封泵吸效应及影响因素分析[J]. 合肥工业大学学报(自然科学版), 2011, 34(12): 1782-1786.
Zhao L J, Su X Y, Du C C, et al. Analysis of pumping effect and influencing factors of rotary lip oil seal[J]. Journal of Hefei University of Technology (Natural Science Edition), 2011, 34(12): 1782-1786.
28 董慧芳. 激光加工微凹坑轴表面对唇形密封泵吸效应与摩擦特性的影响[D]. 合肥: 合肥工业大学, 2012.
Dong H F. The effect of laser processing on the suction and friction characteristics of lip seal[D]. Hefei: Hefei University of Technology, 2012.
29 苏泽辉, 刘美红. 柱面气膜密封性能的CFD数值分析[J]. 润滑与密封, 2016, 41(9): 49-53.
Su Z H, Liu M H. CFD numerical analysis of cylinder gas film sealing performance[J]. Lubrication and Sealing, 2016, 41(9): 49-53.
30 Andrés L S, Ashton Z. Comparison of leakage performance in three types of gas annular seals operating at a high temperature (300°C)[J]. Tribology Transactions, 2010, 53(3): 463-471
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