排灌机械工程学报2013，Vol.31Issue(7)：605-610,6.DOI:10.3969/j.issn.1674-8530.2013.07.010
不等温下螺旋槽干气密封端面压力分布计算
Approximately estimating pressure distribution in gas lubricated spiral grooved face seal under non-isothermal conditions
摘要
Abstract
The analytical methods for estimating pressure distribution on the end face of a dry gas seal (DGS) were reviewed,and then a novel algorithm for non-isothermal conditions was proposed in this paper based on the Whipple infinite narrow-groove theory.The Tripp function was used to get a temperature profile along the radius on the end face.The heat conductivity angle of gas was selected to be 3 times the conductivity angle of liquid based on experience.To solve the adjusted Gabriel differential functions more conveniently,a curve fitting method was applied to obtain an approximate analytical function of temperature profile T(r).The differential equations were solved by using 4th-order Rung-Kutta method.Compared with the results in literature,the pressures at groove bottom pg obtained by the present method are increased by 6.8％,5.0％,2.7％ when the film thicknesses are 5.08,3.05,2.03 μm,respectively.And this result is consistent with the existing pressure distribution characteristic on a DGS end face.Compared with FEA (finite element analysis),the present novel method can easily be applied in engineering.关键词
干气密封/端面温度/螺旋槽/端面压力/无限槽Key words
dry gas seal/end face temperature/spiral groove/end face pressure/unlimited groove分类
农业科技引用本文复制引用
陈侃,黄泽沛,姚进,张智..不等温下螺旋槽干气密封端面压力分布计算[J].排灌机械工程学报,2013,31(7):605-610,6.基金项目
国家科技重大专项资金资助项目(2009ZX04014-102-03) （2009ZX04014-102-03）
中央高校基本科研业务费专项资金资助项目(SWJTU09ZT06) （SWJTU09ZT06）
