T形滑环组合密封圈密封性能研究
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摘要
利用ANSYS建立T形滑环组合密封的二维轴对称有限元模型,将密封结构划分为4个密封区域,研究静、动密封状态下介质压力、密封间隙、摩擦因数和T形滑环斜边与垂直线之间的角度,对组合密封圈密封性能的影响。仿真结果表明,T形滑环组合密封可以满足研究的压力范围下的静、动密封要求。其最大Von Mises应力和最大接触应力随介质压力增大而增大,随密封间隙增大而减小;最大Von Mises应力和最大接触应力随滑环斜边与垂直线之间角度增大而增大,当角度为2.5°～7.5°时,组合密封可达到密封要求且滑环不易磨损;摩擦因数越小,组合密封动密封性能越好。
The finite element analysis of T-sliding ring combined seal was carried out by ANSYS software,and its two-dimensional axisymmetric finite element model was established. The sealing structure was divided into four sealing zones to study the effects of medium pressure,seal clearance,friction coefficient and the angle φ between the inclined edge of T-type slip ring and the vertical line on sealing performance under static and dynamic seal state.The simulation results show that T-sliding ring combined seal can meet the static and dynamic sealing requirements under the pressure range studied.The maximum Von Mises stress and maximum contact stress are increased with the increasing of the medium pressure and decreased with the increasing of the sealing clearance,and the sealing performance is better when the seal clearance is less than 0.3 mm.The maximum Von Mises stress and maximum contact stress are increased with the increasing of angle φ,when φ is between 2.5° and 7.5°,the combined seal can meet the sealing requirements and the slip ring is not easy to be worn.The smaller the friction coefficient,the better the performance of dynamic seal of the combined seal.
The finite element analysis of T-sliding ring combined seal was carried out by ANSYS software,and its two-dimensional axisymmetric finite element model was established. The sealing structure was divided into four sealing zones to study the effects of medium pressure,seal clearance,friction coefficient and the angle φ between the inclined edge of T-type slip ring and the vertical line on sealing performance under static and dynamic seal state.The simulation results show that T-sliding ring combined seal can meet the static and dynamic sealing requirements under the pressure range studied.The maximum Von Mises stress and maximum contact stress are increased with the increasing of the medium pressure and decreased with the increasing of the sealing clearance,and the sealing performance is better when the seal clearance is less than 0.3 mm.The maximum Von Mises stress and maximum contact stress are increased with the increasing of angle φ,when φ is between 2.5° and 7.5°,the combined seal can meet the sealing requirements and the slip ring is not easy to be worn.The smaller the friction coefficient,the better the performance of dynamic seal of the combined seal.
引文
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[7]刘清友,杨亚强,朱海燕,等.C形滑环式组合密封的密封性能[J].润滑与密封,2017,42(8):36-41.LIU Q Y,YANG Y Q,ZHU H Y,et al.Sealing performance of C-sliding ring combined seals[J].Lubrication Engineering,2017,42(8):36-41.
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[10]陈国定,HAISE H,HAAS W,等.O形圈的有限元力学分析[J].机械科学与技术,2000,19(5):625-626.CHEN G D,HAISE H,HAAS W,et al,Analysis of elastomeric O-ring seals using the finite element method[J].Mechanical Science and Technology,2000,19(5):625-626.
[2]许同乐,张康雷.阶梯组合密封件密封性能的分析[J].煤矿机械,2008(9):87-88.XU T L,ZHANG K L.Performance analysis of ladder compounding airproof element[J].Coal Mine Machinery,2008(9):87-88.
[3]谭晶,杨卫民,丁玉梅,等.滑环式组合密封件的研究(Ⅰ):方形同轴密封件(格来圈)的分析[J].润滑与密封,2007,32(1):53-55.TAN J,YANG W M,DING Y M,et al.The study of sliding ring combined seal ring(Ⅰ):the analysis of rectangle co-axial seal(Ge Lai ring)[J].Lubrication Engineering,2007,32(1):53-55.
[4]谭晶,梁军,杨卫民,等.滑环式组合密封件的研究(Ⅱ):阶梯型同轴密封件(斯特圈)的有限元分析[J].润滑与密封,2007,32(7):16-19.TAN J,LIANG J,YANG W M,et al.The study of sliding ring combined seal ring(Ⅱ):the finite element analysis of step Seals(Si Te ring)[J].Lubrication Engineering,2007,32(7):16-19.
[5]陈社会.一种新型旋转轴密封:齿形滑环式组合密封[J].机械工程师,2000(8):19-21.CHEN S H.A new seal in rotating shaft:tooth and sliding ring combined seal[J].Mechanical Engineers,2000(8):19-21.
[6]张教超,王敏庆,李海飞.齿形滑环式组合密封的有限元分析[J].润滑与密封,2011,36(5):59-62.ZHANG J C,WANG M Q,LI H F.The finite element analysis oftooth and sliding ring combined seal[J].Lubrication Engineering,2011,36(5):59-62.
[7]刘清友,杨亚强,朱海燕,等.C形滑环式组合密封的密封性能[J].润滑与密封,2017,42(8):36-41.LIU Q Y,YANG Y Q,ZHU H Y,et al.Sealing performance of C-sliding ring combined seals[J].Lubrication Engineering,2017,42(8):36-41.
[8]SUI H,POHL H,SCHOMBURG U,et al,Wear and friction of PTFE seals[J].Wear,1999,224(2):175-182.
[9]左正兴,廖日东.12150柴油机橡胶密封圈的有限元分析[J].内燃机工程,1996,17(2):46-49.ZUO Z X,LIAO R D.Finite element analysis of rubber sealing ring for model 12150 diesel engine[J].Internal Combustion Engine Engineering,1996,17(2):46-491.
[10]陈国定,HAISE H,HAAS W,等.O形圈的有限元力学分析[J].机械科学与技术,2000,19(5):625-626.CHEN G D,HAISE H,HAAS W,et al,Analysis of elastomeric O-ring seals using the finite element method[J].Mechanical Science and Technology,2000,19(5):625-626.