节能2025，Vol.44Issue(12)：48-52,5.DOI:10.3969/j.issn.1004-7948.2025.12.011
可变预负荷可倾瓦径向轴承机理研究
Research on the mechanism of variable preload tilting-pad journal bearings
摘要
Abstract
Large rotating machinery equipment widely adopts tilting-pad journal bearings(TPJBs).However,under high load and long-term operation,the oil film thickness of TPJBs decreases,affecting the efficiency of the unit.Rapidly adjusting the preload of TPJBs is an effective way to change the thickness of the oil film thickness.A lubrication model of variable preload TPJBs is constructed.Taking the pad-6 TPJBs used in 1 000 MW units as the research object,the influence laws of different preloads of tilting-pad on the load capacity performance(such as load,pressure distribution,flow rate,minimum oil film thickness,etc.)and dynamic characteristic coefficients are analyzed.The results show that when the preload factors of pad-1 and pad-4 are adjusted,the pressure distribution characteristics of the symmetrical pads of the top pads(pad-2 and pad-6)and the symmetrical pads of the bottom pads(pad-3 and pad-5)are similar.With the increase of the preload factors,the oil flow rate of the TPJBs gradually increases.Compared with adjusting the preload factors of pad-1 and pad-4,adjusting the preload factors of pad-2 and pad-6,pad-3 and pad-5,and pad-3 and pad-6 increased the minimum oil film thickness by approximately 25.9%,7.4%,and 10.3%,respectively.This research can provide a reference for the design of high-performance TPJBs and energy-saving in terms of loss.关键词
可倾瓦轴承/可变预负荷系数/润滑/静动特性/节能降耗Key words
TPJBs/variable preload factors/lubrication/static and dynamic characteristics/energy-saving and consumption reduction分类
机械制造引用本文复制引用
孙克学,王海军,陶亮,吴永胜,夏阳,邴汉昆,陈帅,张国渊..可变预负荷可倾瓦径向轴承机理研究[J].节能,2025,44(12):48-52,5.基金项目
国家自然科学基金资助项目(项目编号:52075407) （项目编号:52075407）
