两轮升压式空气动压轴承涡轮冷却器起浮压力计算

赵云峰; 胡文超; 朱刚; 宁家强

两轮升压式空气动压轴承涡轮冷却器起浮压力计算

中国航空工业集团公司南京机电液压工程研究中心航空机电系统综合航空科技重点实验室, 南京 211106

计量
- 文章访问数: 1869
- HTML浏览量: 132
- PDF量: 499
- 被引次数: 0
出版历程
- 收稿日期: 2011-10-25
- 刊出日期: 2012-09-28

Calculation of start-up pressure of two-wheel bootstrap air cycle machine with foil air bearing

Aviation Key Laborary of Science and Technology on Aero Electromechanical System Integration, Nanjing Engineering Institute of Aircraft Systems, Aviation Industry Corporation of China, Nanjing 211106, China

摘要

摘要: 通过分析两轮升压式空气动压轴承涡轮冷却器的起浮原理,建立了计算起浮压力的方法.按照该方法编制程序计算了某型涡轮冷却器在不同条件下的起浮压力,计算结果与试验实测数据吻合较好,说明计算方法具有较高准确度.通过计算和分析可以看到涡轮出口背压和轴承预紧对轴承起浮影响较大,背压越低则起浮压力越低;轴承预紧力越大则起浮压力越高.
- 空气动压轴承 /
- 涡轮冷却器 /
- 起浮压力 /
- 脱离转速 /
- 驱动力矩 /
- 摩擦力矩
Abstract: Through an analysis of the start-up principle of two-wheel bootstrap air cycle machine (ACM) with foil air bearing,the method to calculate the start-up pressure has been established has been established.According to this method,a program has been composed to calculate the start-up pressure of one ACM under different conditions.The calculation results matched the actual test data well,which demonstrates that this calculation method is of high accuracy.Calculation and analysis show that the turbine outlet pressure and the bearing preload have great effects on the bearing start-up pressure.The lower the turbine outlet pressure,the lower the start-up pressure is.Meanwhile,the greater the preload,the higher the start-up pressure is.
- foil air bearing /
- air cycle machine /
- start-up pressure /
- lift off speed /
- driving torque /
- pivoting friction torque

HTML

参考文献(16)

[1]	Agrawal G L.Foil gas bearing for turbomachinary. Williamsburg USA:The 20th Intersociety Conference on Environmental System,1990.
[2]	林韶宁,夏葵,李军,等.空气制冷机在飞机空调系统中的应用[J].流体机械,2004,32(10):46-49. LIN Shaoning,XIA Kui,LI Jun.Application of air refrigerator in aircraft air condition system[J].Fluid Machinery,2004 32(10):46-49.(in Chinese)
[3]	陈元先,杨燕生.悬臂式挠性薄片气体动压径向轴承分析研究[J].航空动力学报,1999,14(2):183-186. CHEN Yuanxian,YANG Yansheng.An analysis of a gas lubricated compliant multileaf journal bearing[J].Joural of Aerospace Power,1999,14(2):183-186.(in Chinese)
[4]	十合晋一.气体轴承设计、制作与应用[M].韩焕臣,译.北京:宇航出版社,1988.
[5]	池长青.气体动静压轴承的动力学及热力学[M].北京:北京航空航天大学出版社,2008.
[6]	陈元先,钱传衢.悬臂式扰性薄片气体动压径向轴承试验研究[J].航空动力学报,1999,19(2):187-190. CHEN Yuanxian,QIAN Chuanqu.Experimental study of a gas lubricated compliant multileaf journal bearing[J].Joural of Aerospace Power,1999,19(2):187-190.(in Chinese)
[7]	杨利花,石建华,刘恒,等.弹性箔片动压径向气体轴承起飞转速和承载能力的实验研究[J].润滑与密封,2006(3):15-18. YANG Lihua,SHI Jianhua,LIU Heng,et al.The experimental study on the lift off speed and load capacity of compliant aerodynamic foil journal air bearing[J].Lubrication Engineering,2006(3):15-18.(in Chinese)
[8]	Andre L S,Kim T H.Forced nonlinear response of gas foil bearing supported rotors[J].Tribology International,2008,41(8):704-715.
[9]	DellaCorte C.A new foil air bearing test rig for use to 700℃ and 70000rpm[J].Tribology International,1998,41(3):335-340.
[10]	刘占生,许怀锦,张广辉,等.箔片预变形对箔片气体径向轴承静特性影响分析[J].航空动力学报,2009,24(1):181-188. LIU Zhansheng,XU Huaijin,ZHANG Guanghui,et al.Analysis of foil predeformation influence on the static characteristics of bump foil journal bearings[J].Joural of Aerospace Power,2009,24(1):181-188.(in Chinese)
[11]	耿海鹏,戚社苗,虞烈.有大预紧效应的多叶径向箔片轴承的分析[J].航空动力学报,2006,21(3):569-574. GENG Haipeng,QI Shemiao,YU Lie.Analysis of the multileaf foil journal bearings with large preload effect[J].Joural of Aerospace Power,2006,21(3):569-574.(in Chinese)
[12]	虞烈,戚社苗,耿海鹏.可压缩气体润滑与弹性箔片气体轴承技术[M].北京:科学出版社,2011.
[13]	池长清.流体力学润滑[M].北京:国防工业出版社,1998.
[14]	Meitner P L,Arthur J.Off-design performance loss model for radial turbines with pivoting,variable-area stators. NASA TP-1708,1980.
[15]	李燕生,陆桂林.向心透平与离心压气机[M].北京:机械工业出版社.
[16]	Galvas M R.Analytical correlation of centrifugal compressor design geometry for maximum efficiency with specific speed. NASA TN D-6729,1972.