基于响应面法的船舶艉轴密封结构的优化设计  

Optimization design of ship stern shaft seal structure based on response surface method

作　　者：郑娆[1] 张敬博 李双喜[1] 陈杨 闫欣欣 赵祥 ZHENG Rao;ZHANG Jing-bo;LI Shuang-xi;CHEN Yang;YAN Xin-xin;ZHAO Xiang(School of Mechanical and Electrical Engineering,Beijing University of Chemical Technology,Beijing 100029,China;System Engineering Research Institute,China Shipbuilding Corporation,Beijing 100094,China)

机构地区：[1]北京化工大学机电工程学院,北京100029 [2]中国船舶集团有限公司系统工程研究院,北京100094

出　　处：《机电工程》2022年第11期1544-1550,1626,共8页Journal of Mechanical & Electrical Engineering

基　　金：国家重点研发计划项目(2018YFB2000800)。

摘　　要：由于船舶密封长期处于复杂工况下,会使其密封性能大幅度下降,针对这一问题,对船舶艉轴密封结构优化设计问题进行了研究。首先,分析了船舶艉轴密封结构原理,并定义了摩擦功耗、密封端面最大变形、泄漏量为密封性能参数;然后,采用有限元方法,建立了船舶艉轴密封性能分析模型,确定了研究路线,通过计算得到了不同结构参数下船舶艉轴密封的密封性能变化规律;最后,采用响应面方法对密封动静环典型结构参数进行了多目标优化,建立了各密封性能参数的目标方程,通过设置各优化目标的满意度,得到了最优典型结构参数;搭建了船舶艉轴密封的实验台,对模拟结果进行了验证。研究结果表明:优化结构相较初始设计结构降低了9.8%的端面变形和5.7%的泄漏量;由此可见,该优化结构能够有效提高船舶密封的密封性能,可以为船舶艉轴密封的设计与优化提供思路。Due to the long-term complex working conditions of the ship seal,its sealing performance will be greatly reduced.In view of this problem,the optimization design of the ship s stern shaft seal structure was studied.First of all,the structural principle of the ship s stern shaft seal was analyzed,and the friction power consumption,the maximum deformation of the sealing end face and the leakage amount were defined as the sealing performance parameters.Secondly,the finite element method was used to establish the performance analysis model of the ship s stern shaft seal,and the research route was determined.The change law of the sealing performance of the ship stern shaft seal under different structural parameters was presented.Finally,the response surface method was used to optimize the typical structural parameters of the dynamic and static rings of the seal,and the objective equation of each sealing performance parameter was established.A test bench for ship stern shaft seal was built,and the simulation results were verified.The research results show that the optimized structure reduces the end face deformation by 9.8%and the leakage by 5.7%compared with the initial design structure,which can effectively improve the sealing performance of the seal,and provide ideas for the design and optimization of the ship stern shaft seal.

关 键 词：机械密封结构 整体密封性能参数 摩擦功耗 密封端面最大变形 泄漏量 密封静环优化 结构参数优化 

分 类 号：TH136[机械工程—机械制造及自动化] U664.21[交通运输工程—船舶及航道工程]