中介轴承环下流道滑油流动及润滑效率分析

朱冬磊; 陈国定; 李炎军; 张朝阳

doi:10.7527/S1000-6893.2019.23022

航空学报 >

2019 , Vol. 40 >Issue 11: 423022 - 423022

DOI: https://doi.org/10.7527/S1000-6893.2019.23022

材料工程与机械制造

中介轴承环下流道滑油流动及润滑效率分析

朱冬磊 ,
陈国定 ,
李炎军 ,
张朝阳

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1. 西北工业大学机电学院, 西安 710072;
2. 中国航发四川燃气涡轮院, 成都 610500

收稿日期: 2019-03-21

修回日期: 2019-04-18

网络出版日期: 2019-06-06

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Inner ring oil flow and lubrication efficiency analysis of intershaft bearing

ZHU Donglei ,
CHEN Guoding ,
LI Yanjun ,
ZHANG Chaoyang

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1. School of Mechnical Engineering, Northwestern Polytechnical University, Xi'an 710072, China;
2. China Gas Turbine Establishment, Chengdu 610500, China

Received date: 2019-03-21

Revised date: 2019-04-18

Online published: 2019-06-06

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摘要

航空发动机主轴轴承（中介轴承）大多采用环下供油方式进行润滑，滑油在环下供油流道中的流动特性影响着轴承润滑效率，为了改善迄今滑油流动分析与喷射-收纳滑油分析相割裂及未考虑环下供油孔与滚动体相对位置变化所产生滑油输出时变性影响的不足，提出了考虑滑油输出时变性影响的喷油-收油与滑油流动集成分析方法。首先，将进入环下供油流道的滑油分解为直接喷入收油孔的滑油和沉积于收油环壁面上并沿周向流入收油孔的滑油，通过计算这两部分滑油流量获得进入环下供油流道的滑油流量；然后，基于环下供油孔和滚动体相对位置变化规律确定供油孔出口的时变边界条件，将其嵌入滑油流动瞬态分析模型，进行模型求解后得到环下供油流道各出口的滑油流量及轴承润滑效率。所提出的滑油流动分析方法较为系统也更符合工程实际，为中介轴承润滑效率的准确计算提供了技术方法和基础数据，有助于中介轴承润滑系统的精确设计。

关键词： 航空发动机; 中介轴承; 环下润滑; 收油效率; 轴承润滑效率; 时变性; 集成分析

本文引用格式

朱冬磊 , 陈国定 , 李炎军 , 张朝阳 . 中介轴承环下流道滑油流动及润滑效率分析[J]. 航空学报, 2019 , 40(11) : 423022 -423022 . DOI: 10.7527/S1000-6893.2019.23022

Abstract

Inner ring oil flow lubrication is applied to principal bearing (intershaft bearing) of aero-engine. The oil-flow characteristics have an influence on lubrication efficiency of bearing. Previous studies have not considered the effect of time-varying oil outlet induced by positional variation between inner ring holes and rollers, and the oil spray-collection analysis is separated from oil flow analysis. To overcome the limitations above, this paper proposes an analytical method considering the effect of time-varying oil outlet, which integrates oil spray-collection and oil flow analysis. Firstly, the oil entering the inner ring tube is decomposed into the oil directly sprayed into tube as well as the oil deposited onto the solid wall and then flowing into the collection holes. By virtue of calculating those two parts of oil flow rates, flow rates of oil entering inner ring tube is obtained. Secondly, time-varying boundary conditions of inner ring holes are determined by positional variation rules of holes and rollers, and are then embedded into transient oil-flow analytical model that could be utilized to obtain the flow rates of each outlet and bearing lubrication efficiency. The proposed oil-flow analytical method is systematic and better qualified for engineering, providing technical method and basic data for the accurate calculation of lubrication efficiency and contributing to the precise design of the intershaft bearing lubrication system.

Key words： aeroengine; intershaft bearing; inner ring lubrication; catch efficiency; bearing lubrication efficiency; time varying characteristic; integration analysis

参考文献

[1] PINEL S I, SIGNER H R, ZARETSKY E V. Comparison between oil-mist and oil-jet lubrication of high-speed, small-bore, angular-contact ball bearings[J]. Tribology Transactions, 2001, 44(3):327-338.
[2] JIANG S, MAO H. Investigation of the high speed rolling bearing temperature rise with oil-air lubrication[J]. Journal of Tribology, 2011, 133(2):021101.
[3] 陈军. 涡扇发动机主轴承环下供油方法分析研究[D]. 西安:西北工业大学, 2007. CHEN J. Research on the inner ring oil supplying method of mainshaft bearing in turbofan engine[D]. Xi'an:Northwestern Polytechnical University, 2007(in Chinese).
[4] 雷燕妮, 苏华, 陈国定, 等. 进油口结构型式对轴承润滑性能影响分析[J]. 润滑与密封, 2005(1):82-83. LEI Y N, SU H, CHEN G D, et al. Analysis of the influences of lubricating oil entrance's configuration on bearing's lubrication performance[J]. Lubrication and Seal, 2005(1):82-83(in Chinese).
[5] 张兆会, 张永红, 陈国定, 等. 航空发动机中介轴承润滑系统的流场分析[J]. 轴承, 2004(12):22-24. ZHANG Z H, ZHANG Y H, CHEN G D, et al. Analysis of oilflow field in lubrication system serving for an aero engine intershaft bearing[J]. Bearing, 2004(12):22-24(in Chinese).
[6] 张永红, 宋乐民, 陈国定, 等. 基于中介轴承润滑性能改善的新结构研究[J]. 润滑与密封, 2005(3):124-125. ZHANG Y H, SONG L M, CHEN G D, et al. The research of new structure aimed to improve the lubrication performance[J]. Lubrication and Seal, 2005(3):124-125(in Chinese).
[7] 张永红, 陈国定, 宋乐民, 等. 叶扇/环下孔组合结构参数对轴承润滑性能的影响分析[J]. 机械传动, 2005, 29(2):55-57. ZHANG Y H, CHEN G D, SONG L M, et al. Analysis on the bearing lubrication performance influenced by fan-like/inner-ring hole structure parameter[J]. Journal of Mechanical Transmission, 2005, 29(2):55-57(in Chinese).
[8] KRUG M B, PEDUTO D, KURZ W, et al. Experimental investigation into the efficiency of an aero engine oil jet supply system[J]. Journal of Engineering for Gas Turbines and Power,2015,137:011505.
[9] FULLER R, WU P K, KIRKENDALL K, et al. Effects of injection angle on the breakup processes of liquid jets in subsonic crossflows[C]//33rd Joint Propulsion Conference and Exhibit, 1997:2966.
[10] ZHANG R, WEI C, WU W, et al. CFD investigation on the influence of jet velocity of oil-jet lubricated ball bearing on the characteristics of lubrication flow field[C]//2015 International Conference on Fluid Power and Mechatronics (FPM), 2015:1324-1328.
[11] WU W, HU J, YUAN S, et al. Numerical and experimental investigation of the stratified air-oil flow inside ball bearings[J]. International Journal of Heat & Mass Transfer, 2016, 103:619-626.
[12] WU W, HU C, HU J, et al. Jet cooling for rolling bearings:Flow visualization and temperature distribution[J]. Applied Thermal Engineering, 2016, 105:217-224.
[13] 杨淋麟, 张丽, 朱惠人. 篦齿结构对封严性能的影响[J]. 科学技术与工程, 2013, 13(33):10069-10073. YANG L L, ZHANG L, ZHU H R. Effect of labyrinth structure on seal performance[J]. Science Technology and Engineering, 2013, 13(33):10069-10073(in Chinese).
[14] 张留祥, 陈俊东, 耿旭辉, 等. 直通式篦齿密封性能的数值模拟与试验研究[J]. 润滑与密封, 2013(10):51-54. ZHANG L X, CHEN J D, GENG X H, et al. Numerical simulation and experimental investigation on straight-through labyrinth seal performance[J]. Lubrication and Seal, 2013(10):51-54(in Chinese).
[15] 杨军. 直通型封严篦齿流动特性的试验研究及数值计算[D]. 成都:电子科技大学, 2009. YANG J. Numerical calculation and experimental investigation on straight-through labyrinth seal flow characteristic[D]. Chengdu:University of Electronic Science and Technology of China, 2009(in Chinese).
[16] 王莉娜, 陈国定, 孙恒超. 轴承腔油滴沉积特性及油膜流动特征分析[J]. 航空学报, 2016, 37(10):3159-3169. WANG L N, CHEN G D, SUN H C. Characteristics analysis of oil droplet deposition and oil film flow in a bearing chamber[J]. Acta Aeronautica et Astronautica Sinica, 2016, 37(10):3159-3169(in Chinese).
[17] 陈薄, 陈国定, 王涛. 考虑油滴变形和二次油滴效应的轴承腔壁面油膜流动分析[J]. 航空学报, 2013, 34(8):1980-1989. CHEN B, CHEN G D, WANG T. Flow characteristics analysis of wall oil film with consideration of oil droplet deformation and secondary oil droplet[J]. Acta Aeronautica et Astronautica Sinica, 2013, 34(8):1980-1989(in Chinese).
[18] CHEN B, CHEN G D, SUN H C, et al. Effect of oil droplet deformation on its deposited characteristics in an aeroengine bearing chamber[J]. Proceedings of the Institution of Mechanical Engineers, Part G:Journal of Aerospace Engineering, 2014, 228(2):206-218.
[19] MUNSON B R, OKIISHI T H, ROTHMAYER A P, et al. Fundamentals of fluid mechanics[M]. New York:John Wiley & Sons, 2014.
[20] 徐建东, 陈国定. 高速圆柱滚子轴承运动的简化分析[J]. 机械科学与技术, 1993(4):57-60. XU J D, CHEN G D, Simplified motion analysis of high speed roller bearings[J]. Mechanical Science and Technology for Aerospace Engineering, 1993(4):57-60(in Chinese).
[21] 张成铁,陈国定,李建华. 高速滚动轴承的动力学分析[J]. 机械科学与技术,1997,16(1):136-139. ZHANG C T, CHEN G D, LI J H. Dynamic analysis of high speed roller bearings[J]. Mechanical Science and Technology for Aerospace Engineering, 1997,16(1):136-139(in Chinese).
[22] 刘秀海, 邓四二, 滕弘飞. 高速圆柱滚子轴承保持架运动分析[J]. 航空发动机, 2013, 39(2):31-38. LIU X H, DENG S E, TENG H F.Kinematics analysis of cages in high-Speed cylindrical roller bearings[J]. Aeroengine, 2013, 39(2):31-38(in Chinese).

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