基于近似模型的柱面气膜密封槽型优化设计  

Optimal groove design of cylindrical gas seal based on approximate model

作　　者：张伟政[1] 冯帆 任娅南 孙月月 ZHANG Wei-zheng;FENG Fan;REN Ya-nan;SUN Yue-yue(College of Petrochemical Technology,Lanzhou Univ.of Tech.,Lanzhou 730050,China)

机构地区：[1]兰州理工大学石油化工学院,甘肃兰州730050

出　　处：《兰州理工大学学报》2023年第5期67-76,共10页Journal of Lanzhou University of Technology

基　　金：甘肃省自然科学基金(18JR3RA145)。

摘　　要：针对旋转轴套侧开设反向人字槽型的新型柱面气膜密封,建立柱面气膜密封数学模型并利用有限差分法数值求解反向人字槽气膜压力分布,并通过Isight平台集成MATLAB软件,采用最优拉丁超立方试验设计及其后处理模块提取出影响密封性能参数的关键槽型结构参数,同时建立近似模型代替耗时的数值计算,通过集成NSGA-Ⅱ多目标优化算法对槽型结构参数进行多目标优化,为轴套侧开槽柱面气膜密封槽型多目标优化设计提供理论参考.Aiming at the new type of cylindrical gas film seal with reverse herringbone groove on the side of rotating shaft sleeve,the mathematical model of cylindrical gas film seal was established and the pressure distribution of reverse herringbone groove gas film was numerically solved by finite difference method.Through the Isight platform integrated with MATLAB software,the optimal Latin hypercube test design and its post-processing module were used to extract the key groove structure parameters affecting the sealing performance parameters.An approximate model was established instead of time-consuming numerical calculation,and the multi-objective optimization of groove structure parameters was carried out by integrating the NSGA-Ⅱmulti-objective optimization algorithm,which provided theoretical reference for the multi-objective optimization design of groove type for cylindrical gas film seal slotted on the side of shaft sleeve.

关 键 词：柱面气膜密封 反向人字槽 近似模型 优化设计 

分 类 号：TQ051[化学工程]