密封面宽度对大潜深船舶尾轴机械密封性能的影响  

Research on the Width of Mechanical Sealing Surface of Stern Shaft Based on Great Diving Depth

作　　者：何涛[1] 王隽[1] 刘旭康 程启超[2] 姜含 HE Tao;WANG Jun;LIU Xukang;CHENG Qichao;JIANG Han(Wuhan Second Ship Design Institute,Wuhan Hubei 430064,China;School of Power and Energy,Wuhan University of Technology,Wuhan Hubei 430063,China)

机构地区：[1]武汉第二船舶设计研究所,湖北武汉430064 [2]武汉理工大学能源与动力工程学院,湖北武汉430063

出　　处：《润滑与密封》2018年第9期71-75,共5页Lubrication Engineering

基　　金：国家自然科学基金项目(51379168)

摘　　要：以水下航行器尾轴机械密封为研究对象,应用有限元方法对不同潜深下、不同密封面宽度的机械密封的性能进行分析对比,探究在大潜深、低转速特殊工况下机械密封面宽度对密封性能的影响。结果表明,当密封面宽度一定时,随着潜深的增加,密封面的最高温度、最大接触压力和轴向应力均随着潜深的增加呈线性上升;当潜深深度一定时,密封面宽度越大,动静环的最高温度越高,最大接触压力和最大轴向应力增加也越快;在相同的工况条件下,泄漏量随着密封面宽度的减小而减少。由此可见,在大潜深、低转速特殊工况下,选择较小的密封宽度有利于降低最高温度,降低最大的轴向应力和接触压力,减少泄漏量。The mechanical seal of the underwater vehicle’s stern shaft was taken as the research object,the finite element method was used to analyze and contrast the sealing performance of the mechanical seals with different seal surface width under different diving depth.The influence of the mechanical seal surface width on the sealing performance under the special conditions such as great diving depth and low speed was invesgiated.The results show that when the sealing surface width is constant,the maximum temperature,contact pressure and axial stress of the sealing surface are increased linearly with the increasing of diving depth.When the diving depth is certain,the greater the width of the sealing surface,the higher the maximum temperature of the static and dynamic rings,the faster the maximum contact pressure and axial stress will increase.Under the same working conditions,the leakage is reduced with the decreasing of the width of the sealing surface.This research shows that under the special conditions of great diving depth and low speed,the selection of smaller seal width is beneficial to reducing the maximum temperature,reducing the maximum axial stress and contact pressure,and reducing the leakage.

关 键 词：机械密封 密封面宽度 泄漏量 潜深 

分 类 号：TH117.1[机械工程—机械设计及理论]