APP下载

面支承扇形可倾瓦推力轴承特性

2020-05-21李永海郭晓东孙向志汪雷赵鸿博龚玉平武鼎超

哈尔滨理工大学学报 2020年1期

李永海 郭晓东 孙向志 汪雷 赵鸿博 龚玉平 武鼎超

摘 要:以面中心支承可倾瓦推力轴承为研究对象,通过有限元分析得到其主要润滑参数。并将分析结果与同工况下点支承推力轴承的润滑性能比较,得到面支承推力轴承的一般结论:面支承推力轴承润滑特性符合润滑理论的一般规律;在低载荷工况下,面支承推力轴承与点支承推力轴承的润滑特性基本相同;面支承的最佳支点位置沿径向、向外径边偏移5%左右;同一工况下,当轴瓦尺寸一定时,面支承推力轴承润滑性能会随着支承面尺寸的增加而下降。

关键词:推力轴承;面支承;性能对比;有限元分析

DOI:10.15938/j.jhust.2020.01.006

中图分类号: TH133.3

文献标志码: A

文章编号: 1007-2683(2020)01-0036-07

Abstract:In surface center supported thrust bearing as the research object, get the main lubrication parameters of surface supported thrust bearing by finite element analysisThe general conclusions of the surface supported thrust bearings are obtained by comparing the calculated results with those of the point supported thrust bearings at the same working conditions: the lubrication characteristics of the surface supporting thrust bearings accord with the general rule of lubrication theory; Under the low load conditions ,the lubrication characteristics of the surface supporting thrust bearings and the point supported thrust bearings are basically same; the optimum fulcrum position of the surface supported thrust bearing is offset about 5% along the radial and outer diameter side; the thrust bearing dimension is constant, the lubrication performance of the surface supporting thrust bearings will degrade with the increase of the supporting surface dimension at the same working conditions-

Keywords:surface support; fulcrum position; performance comparison;finite element analysis

0 引 言

滑动推力轴承广泛应用于水轮发电机组,汽轮发电机组和船用传动装置等大型装置中[1]。作为其核心部件,滑动轴承起到轴向固定作用,同时也承担轴向载荷。为了满足不同的工况要求,推力轴承可采用不同的支承方式,其润滑性能也不尽相同。

国内外诸多学者对推力轴承性能进行了广泛研究:Lu等 [2]研究了不同支承的轴承对水利发电机组性能的影响。Wasilczuk[3]分析了大型可倾瓦推力轴承的润滑与摩擦性能。Galvo等 [4]研究了动压推力轴承支点位置对推力轴承的润滑性能的影响。Brown等[5]建立了大型弹簧支承推力轴承油膜润滑的迭代求解方法并采用有限元分析方法进行了动、静压轴承润滑特性。李忠等[6]研究了各种刮瓦形式和支承线的倾斜度对推力轴承润滑性能的影响。……

登录APP查看全文