方形同轴组合密封的结构及运行参数优化研究

发布时间：2018-05-15 18:59

本文选题：方形同轴组合密封 + 有限元分析　；参考：《天津科技大学学报》2016年04期

【摘要】：利用ANSYS分析了方形同轴组合密封的结构及运行参数对其动静态密封性能的影响.结果表明:主密封面的最大静态接触压力随着滑环厚度的增加而显著减小,随滑环两侧倒角或O形圈压缩率的增加而增大;活塞杆的往复运动速度和滑环的摩擦因数对主密封面的最大动态接触压力和密封面间的摩擦力影响不明显.应用响应曲面法,以得到密封面最大接触压力和最小摩擦力作为优化目标,对该组合密封的结构参数进行优化设计,得到了方形同轴组合密封的最佳参数组合方案,即当方形同轴密封的滑环厚度为2.03,mm、顶倒角角度为33.26°、O形圈压缩率为16.70%,时密封性能最优.
[Abstract]:The effect of the structure and operating parameters of a square coaxial composite seal on the dynamic and static sealing performance of a square coaxial seal is analyzed by ANSYS. The results show that the maximum static contact pressure of the main cover decreases with the increase of the thickness of the slip ring, and increases with the increase of the chamfering or O ring compression rate of the slipping ring; the reciprocating speed and slip ring of the piston rod. The effect of the friction factor on the maximum dynamic contact pressure and the friction force between the sealing surface is not obvious. By using the response surface method, the maximum contact pressure and minimum friction force of the seal face are obtained as the optimization target. The optimum design of the structural parameters of the combined seal is carried out, and the optimum parameter group of the square coaxial composite seal is obtained. The scheme is that when the slip ring of square coaxial seal is 2.03, mm, top chamfering angle is 33.26 degree, and O ring compression ratio is 16.70%, the sealing performance is the best.

【作者单位】：天津市轻工与食品工程机械装备集成设计与在线监控重点实验室天津科技大学机械工程学院;
【基金】：国家自然科学基金资助项目(51075300)
【分类号】：TH136

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