摘要
以特殊螺纹接头为研究对象,采用有限元分析的方法,分析常规锥面/锥面密封结构、变锥面密封结构以及逆向台肩3种结构主密封面上接触压力分布规律,并在此基础上提出一种改进型密封结构。有限元分析结果表明:锥面/锥面密封结构主密封面上接触压力分布不均,有效接触长度很短;变锥面密封结构和逆向台肩能够在一定程度上改善接触压力分布,但密封结构参数对接触压力分布影响很大;改进型密封结构综合了上述结构的优点,主密封面上接触压力呈现U型分布,并且在拉伸载荷作用下有着更高的稳定性。
Premium connections were studied with the finite element analysis （ FEA）, the contact pressure distributions on the main sealing surface of cone/cone sealing structure, variable taper sealing structure and reverse shoulder structure were analyzed, and an improved sealing structure was designed. FEA results indicate that the contact pressure distribution on the primary sealing surface of the cone/cone sealing structure is very uneven, and the effective contact length is short. Variable cone sealing structure and reverse shoulder can improve the contact pressure distribution to a certain extent, but the parameters of the structures have a great influence on the distribution. The improved sealing structure combines the ad- vantages of above-mentioned structures, the contact pressure distribution on primary sealing surface shows U-distribution, and the improved sealing structures has high contact pressure stability under the tensile load.
出处
《润滑与密封》
CAS
CSCD
北大核心
2011年第4期15-20,共6页
Lubrication Engineering
基金
国家科技支撑计划课题(2008BAB37B03-3)
关键词
特殊螺纹接头
密封结构
有限元分析
接触压力
premium connection
sealing structure
finite element analysis
contact pressure
