液膜密封润滑状态转变及性能分析

发布时间：2018-01-03 15:34

  本文关键词：液膜密封润滑状态转变及性能分析　出处：《润滑与密封》2017年11期 　论文类型：期刊论文

  更多相关文章： 液膜密封 润滑状态 临界转速 参数优化

【摘要】：以螺旋槽液膜密封为研究对象,求解考虑流量因子的平均雷诺方程,研究工况参数和结构参数对密封端面润滑状态转变规律的影响。结果表明:随着转速升高,液膜厚度与液膜承载系数逐渐增加,粗糙峰接触力不断减小至消失,实现摩擦副分离;低黏度介质对临界转速的影响显著;随着压差的增大,临界转速与闭合力均呈线性增大的趋势;临界转速随槽深、螺旋角增大而增大,随槽数、槽坝比增大而减小,结构参数中槽深对其影响最为显著,为提高润滑状态转变能力,建议取槽深3~7μm,螺旋角14°~18°,槽数16~24,槽坝比2/3~5/6。
[Abstract]:The spiral groove seal as the research object, solving Reynolds equation considering the average flow factor, influence of operating parameters and structure parameters on the sealing face transition of lubrication condition. The results showed that: with the increase of speed, the film thickness and the film bearing coefficient increased, asperity contact force decreases to disappear, realize the friction separation; effect of low viscosity medium on critical speed significantly; with the pressure increasing, the critical speed and the closing force showed a linear increasing trend; critical speed increases with the groove depth, the helix angle increases with the number of slots and slot dam than decreases, affect the groove depth of the most significant structure parameters for to improve the lubrication state transformation ability, take 3~7 groove depth m, helix angle of 14 DEG ~18 DEG 16~24, groove number, slot dam 2/3~5/6.

【作者单位】： 中国石油大学(华东)化学工程学院;
【基金】：国家自然科学基金项目(51375497) 山东省自主创新及成果转化专项(2014ZZCX10102-4)
【分类号】：TH117.2;TH136
【正文快照】： )j縥縥縥縥縥縥，

本文编号：1374515