连续回转电液伺服马达组合密封特性研究
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摘要
为改善连续回转电液伺服马达组合密封性能,建立了O型圈,当其压缩率为10%时,组合密封安装沟槽角度分别为90°,120°,150°和180°的结构模型,运用ABAQUS软件对连续回转电液伺服马达组合密封结构进行仿真分析,通过对比4个角度下组合密封的泄漏量和黏性摩擦力,得到了最优组合密封结构.研究结果表明:当沟槽角度为150°时,密封效果最优.分析了当O型圈压缩率分别为7%,8%,9%和10%时的组合密封密封性能,结果表明:当压缩率为9%时,组合密封效果最优.
In order to improve the combined sealing performance of continuous rotary electro-hydraulic servo motor,the structural models were established when O-ring compression ratio was 10% and combination seal installation groove angles were 90°,120°,150°and 180°,respectively.The combined sealing structures of continuous rotary electro-hydraulic servo motor were simulated and analyzed by ABAQUS.Then the optimal combined sealing structure was obtained by comparing the leakage and viscous friction under four different angles.Research results show that the sealing effect is optimal when the groove angle is 150°.The sealing properties of combined seals were analyzed when the O-ring compression ratios were 7%,8%,9% and 10% respectively,and results show that the sealing effect is optimal when the compression ratio is 9%.
In order to improve the combined sealing performance of continuous rotary electro-hydraulic servo motor,the structural models were established when O-ring compression ratio was 10% and combination seal installation groove angles were 90°,120°,150°and 180°,respectively.The combined sealing structures of continuous rotary electro-hydraulic servo motor were simulated and analyzed by ABAQUS.Then the optimal combined sealing structure was obtained by comparing the leakage and viscous friction under four different angles.Research results show that the sealing effect is optimal when the groove angle is 150°.The sealing properties of combined seals were analyzed when the O-ring compression ratios were 7%,8%,9% and 10% respectively,and results show that the sealing effect is optimal when the compression ratio is 9%.
引文
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[2]魏列江,韩小霞,熊庆辉,等.O形圈密封沟槽倒角半径对密封性能的影响[J].液压气动与密封,2016,36(3):72-75.
[3]湛从昌,邓江洪,陈奎生.低摩擦高频响变间隙密封液压缸研究[J].机械工程学报,2015,51(24):161-167.
[4]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.
[5]夏毅敏,张欢,罗春雷,等.DAS组合密封圈密封特性[J].中南大学学报:自然科学版,2017,48(1):91-98.
[6]NIKAS G K,BURRIDGE G,SAYLES R S.Modelling and optimization of rotary vane seals[J].Proc of the Institution of Mechanical Engineers,Part J:Journal of Engineering Tribology,2007,221(6):699-715.
[7]崔晓,董彦良,赵克定.基于ADINA的组合式动密封泄漏量与摩擦力计算[J].华南理工大学学报:自然科学版,2010,2(39):95-100.
[8]李阁强,赵巧莉,李跃松,等.电液伺服摆动马达密封结构研究[J].润滑与密封,2015,40(4):9-13.
[9]韩传军,任旭云,郑继鹏等.稠油开采中常规螺杆泵定子衬套磨损研究[J].润滑与密封,2018,43(5):25-29.
[10]王冰清.基于软弹流润滑模型的液压格莱圈密封性能分析[J].摩擦学学报,2018,38(1):75-83.
[11]Dowson D.Elasto-hydrodynamic lubrication[M].Pergamon Press,1977:1-36.
[12]NIKAS G K,SAYLES R S.Study of leakage and friction of flexible seals for steady motion via a numerical approximation method[J].Tribology International,2006,39(9):921-936.
[13]孙见君,陈国旗,嵇正波,等.接触式机械密封界面泄漏机理分析[J].化工学报,2018,69(4):1528-1536.