化工学报Issue(2)：208-215,8.DOI:10.11949/j.issn.0438-1157.20141035
自泵送流体动压型机械密封性能分析
Performance analysis of hydrodynamic mechanical seals based on self-pumping principle
摘要
Abstract
A kind of self-pumping hydrodynamic mechanical seal was presented based on the principle of centrifugal pump. The three-dimensional flow fields of self-pumping grooves were analyzed using Fluent, and the influences of geometric parameters and operating parameters on the sealing properties, including opening force and leakage rate were also discussed. Leakage rate and opening force decreased with increasing speed, and increased with increasing pressure, aperture diameter, helix angle and the ratio of groove width and ridge width. With increasing groove number, ratio of groove length and dam length, opening force decreased and leakage rate increased slightly. The influence of groove depth on opening force was similar to the influence on leakage rate, and there existed an optimal groove depth which could achieve higher opening force and lower leakage rate. Consequently, the self-pumping hydrodynamic mechanical seal proposed could get larger opening force and lower leakage rate by matching groove parameters.关键词
机械密封/自泵送/力学性能/计算机模拟/数值分析Key words
mechanical seal/self-pumping/mechanical properties/computer simulation/numerical analysis分类
机械制造引用本文复制引用
周敏,孙见君,马晨波,於秋萍,周培岩..自泵送流体动压型机械密封性能分析[J].化工学报,2015,(2):208-215,8.基金项目
国家自然科学基金项目（51375245）；江苏省研究生培养创新工程项目（CXLX13_514）；江苏省大学生实践创新训练计划资助项目(201410298051Z)。 （201410298051Z）
