Calculation and Analysis of Critical Speed of High-Speed Turbo-Expanders

您当前的位置：

首页 >

文章列表页 >

Calculation and Analysis of Critical Speed of High-Speed Turbo-Expanders

更新时间：2025-07-09

- Calculation and Analysis of Critical Speed of High-Speed Turbo-Expanders
- Vol. 44, Issue 9, Pages: 33-37+58(2010)
- 作者机构：
  
  1. 西安交通大学动力工程多相流国家重点实验室,西安,710049
  2. 西安交通大学能源与动力工程学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TB653
- Online First：10 September 2010，
  
  Published：2010
- 稿件说明：
移动端阅览
Calculation and Analysis of Critical Speed of High-Speed Turbo-Expanders[J]. 2010, 44(9): 33-37+58.
DOI：

Calculation and Analysis of Critical Speed of High-Speed Turbo-Expanders[J]. 2010, 44(9): 33-37+58. DOI：

摘要

为了保障高速透平膨胀机的稳定性

针对高速透平膨胀机转子临界转速的确定问题

分别讨论了Prohl递推法、Riccati传递矩阵法和有限元QZ(FEQZ)法在各向异性的弹性支承轴承转子系统阻尼临界转速计算中的优缺点.考虑到透平膨胀机实际的结构和应用情况

建议气体轴承支承高速透平膨胀机转子临界转速的计算方法采用FEQZ法

同时运用Matlab语言分模块设计了计算程序

大大简化了编程过程

提高了计算精度.在此基础上

通过在实际工况参数范围内的实例

分析了某透平膨胀机转子支承刚度和阻尼对转子系统阻尼临界转速的影响

并与工程实验数据进行了对照

从而验证了模型与分析计算的可靠性.

Abstract

The advantages and disadvantages of the Prohl method

the Riccati recursive method and the finite element QZ(FEQZ)method in estimating critical speed of turboexpander rotor-bearing systems with anisotropic elastic support were discussed to ensure stable operation of high speed turboexpanders. It is suggested that the FEQZ method be the most effective way when the actual structure and practical application of turboexpanders are considered. The Matlab code was employed to design the program

and the results show that the program process is simplified and the calculation accuracy is higher. In addition

the effects of the support stiffness and the damping coefficient on critical speed of the rotor-bearing system of a turboexpander within actual working condition range were analyzed

and the calculation results were validated by the experimental data.

关键词

Keywords

references

陈汝刚, 侯予, 袁秀玲, 等. 气体轴承在高速透平机械中的应用 [J]. 流体机械, 2007,35(4):55-58.

CHEN Rugang, HOU Yu, YUAN Xiuling, et al. Application of gas bearings on high speed turbo-machinery [J]. Fluid Machinery, 2007,35(4):55-58.

赵永辉. 离心式压缩机转子-轴承系统临界转速计算[D]. 沈阳: 沈阳工业大学机械工程学院, 2006.

陆颂元. 转子系统阻尼固有频率的传递矩阵-多项式计算法[J]. 应用力学学报, 1986(3):73-82.

LU Songyuan. A method for calculating damped critical speeds and stability of rotor-bearing systems [J]. Chinese Journal of Applied Mechanics, 1986(3):73-82.

CHILDS D W, NOTEON G K A. Critical-speed solutions for finite element-based rotor models [J]. ASME Journal of Mechanical Design, 1982,104:412-416.

HASHISH E, SANKAR T S. Finite element and modal analyses of rotor-bearing systems under stochastic loading conditions [J].ASME Journal of Vibration, Acoustics Stress and Reliability in Design, 1984, 106:80-89.

MOLER C B, STEWART G W. An algorithm for generalized matrix eigenvalue problems.[J] SIAM Journal on Numerical Analysis, 1973,10(2):241-256.

KAUFMAN L. A generalization of the LR algorithm to solve Ax=λBx, AD0745022 [R]. Stanford, CA, USA: Stanford University. Department of Computer Science, 1972.

WARD R C. The combination shift QZ algorithm [J]. SIAM Journal on Numerical Analysis, 1975,12(6):835-853.

钟一锷, 何衍宗, 王正, 等. 转子动力学 [M]. 北京: 清华大学出版社,1987.

闻邦椿,顾家柳,夏松波,等. 高等转子动力学 [M]. 北京: 机械工业出版社, 1999.

虞烈, 刘恒. 轴承-转子系统动力学[M]. 西安: 西安交通大学出版社, 2000.

吴县制氧机厂, 江西制氧机厂, 西安交通大学. 空气轴承中压透平膨胀机研制第一阶段报告 [R]. 西安:西安交通大学, 1978.

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Experimental Study on Load Capacity for New Aerodynamic Foil Thrust Gas Bearing

study of Miniature High Speed Turboexpander with Gas Lubricated Bearing

Dynamic Performance Analysis and Optimization of High-Speed Rotor-Ball Bearing Systems

Miniature Aerodynamic Elastic Foil Gas Bearing for Palm-Sized High Speed Turboexpander

Analysis for Hydrodynamic Foil Thrust Bearings Considering Temperature Effects

Related Author

侯予 1

刘烨 1

周权 1

陈汝刚 1

陈纯正

侯予

陈汝刚

Related Institution

华中科技大学国家CAD支撑软件工程技术研究中心

State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University

Beijing Key Laboratory of Advanced Manufacturing Technology, Beijing University of Technology

MOE Key Laboratory of Cryogenic Technology and Equipment, Xi'an Jiaotong University

School of Energy and Power Engineering, Northeast Electric Power University

⁰