|Table of Contents|

Experimental study on high-speed running of rolling bearing-rotor system of turbo-pump(PDF)

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]

Issue:
2020年02期
Page:
50-56
Research Field:
研究与设计
Publishing date:

Info

Title:
Experimental study on high-speed running of rolling bearing-rotor system of turbo-pump
Author(s):
HUANG Jinping;  WANG Jun;  HUANG Daoqiong;  DOU Yu
(Science and Technology on Liquid Rocket Engine Laboratory, Xi’an 710100, China)
Keywords:
turbo pump;  rotor;  rolling bearing;  rotor dynamic balancing;  axial force
PACS:
V433.9
DOI:
-
Abstract:
According to the specific structural characteristics of turbo pump rotor, the problems of supporting, driving, bearing lubrication and cooling, vibration measurement, high speed rotor dynamic balance, axial force loading and control of rolling bearing rotor system during high-speed operation test were solved.Combined with the fault diagnosis technology of rotating machinery, the optimization methods of high speed dynamic balancing efficiency, rotor supporting state and axial force loading sate have been put forward, and the experimental verification has also been carried out.Finally, the high speed and stable operation of turbo pump rotor has been achieved.The results show that flexible coupling with rigid connection should be used when turbine pump rotor runs at high speed.High-speed bearing of the turbo-pump rotor requires high pressure and direct injection oil supply.By optimizing the balance efficiency, the primary balance efficiency of the rotor under the influence of nonlinear vibration can be increased from 30% to 73.7%.In order to avoid loosening of the foundation during high speed, the outer ring of rolling bearing should be installed with a tight fit during the test.The axial force should be uniformly loaded along the bearing circumference, and its magnitude should be determined according to the comprehensive analysis of the specific bearing rotor system structure and the running state.

References:

[1] 休泽尔D K. 液体火箭发动机现代工程设计[M].朱宁昌,译.北京:中国宇航出版社, 2004.
[2] 吕运, 童大鹏, 田野, 等.滚动轴承-转子系统动力学建模与仿真分析[J].机械强度, 2015, 37(6):1178-1185.
[3] GUNDUZ A, DREYER J T, SINGH R.Effect of bearing preloads on the modal characteristics of a shaft-bearing assembly:Experiments on double row angular contact ball bearings[J].Mechanical Systems and Signal Processing, 2012, 31:176-195.
[4] 蒋云帆, 廖明夫.航空发动机高压转子前轴承刚度特性分析[J].推进技术, 2014, 35(8):1123-1130.
[5] 窦唯, 叶志明, 闫宇龙.液体火箭发动机氢涡轮泵转子动力学特性研究[J].导弹与航天运载技术, 2016(4):17-21.
[6] MUSZYNSKA A.Rotordynamics[M].New York:CRC Pr ess Taylor & Francis Group, 2005.
[7] 苗旭升, 李斌, 黄智勇.发动机涡轮泵流体动静压轴承应用分析[J].火箭推进, 2004, 30(6):1-4.MIAO X S, LI B, HUANG Z Y.Application analysis of liquid hybrid bearing for engine turbopump[J].Journal of Rocket Propulsion, 2004, 30(6):1-4.
[8] 毛凯, 苗旭升, 陈晖, 等.液体火箭发动机涡轮泵用轴承寿命试验研究[J].火箭推进, 2016, 42(5):24-27.MAO K, MIAO X S, CHEN H, et al.Experimental research on bearing life of turbopump in liquid rocket engine[J].Journal of Rocket Propulsion, 2016, 42(5):24-27.
[9] 刘红彬, 王海洋, 张磊, 等.高速滚动轴承喷油润滑油液穿透机理分析[J].航空动力学报, 2016, 31(7):1766-1776.
[10] 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.
[11] 李松生, 张钢, 陈晓阳, 等.超高速电主轴轴承的润滑条件分析[J].润滑与密封, 2005, 30(5):162-165.
[12] 郑龙席, 高晓果, 姜宏伟.小型航空发动机油雾润滑技术实验与数值研究[J].机械科学与技术, 2011, 30(7):1133-1136.
[13] 廖明夫.航空发动机转子动力学[M].西安:西北工业大学出版社, 2015.
[14] BENTLY D E, CHARLES T H.Fundamentals of Rotating Machinery Diagnostics[M].Minden, NV:Bently Pressurized Bearing Press, 2002.
[15] 马辉, 孙伟, 王学军, 等.转子系统松动故障特征分析[J].东北大学学报(自然科学版), 2009, 30(3):400-404.
[16] CHU F, TANG Y.Stability and non-linear responses of a rotor-bearing system with pedestal looseness[J].Journal of Sound and Vibration, 2001, 241(5):879-893.
[17] WU T, CHUNG Y, LIU C.Looseness diagnosis of rotating machinery via vibration analysis through Hilbert-Huang transform approach[J].Journal of Vibration and Acoustics, 2010, 132(3):1-9.
[18] 金路, 李爱民, 陈晖, 等.配合间隙对涡轮泵转子低速动平衡的影响研究[J].火箭推进, 2017, 43(4):14-17.JIN L, LI A M, CHEN H, et al.Effect of tolerance clearance on low-speed dynamic balance of turbopump rotor[J].Journal of Rocket Propulsion, 2017, 43(4):14-17.

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Last Update: 2020-04-25