Paper Title:
Experimental Identification for Seals Rotordynamic Coefficients Based on Double Plane Balance Method
  Abstract

This paper presents a new rotordynamic measurements conducted on a test rig for evaluation of multiple rings of labyrinth seals. Considering the tilting motion of cylinder occurs in experiments, the impedance matrix of cylinder system is obtained first. An equivalent seal force identification model is set up for multiple seals based on double plane balance theory of rotor dynamics. The resultant seal forces are calculated on two end planes of the cylinder, and resolved to multiple sections that seals located. A frequency domain identification method delivers the test seals stiffness and damping coefficients. Compressed air inlet tests were run from 1000 rpm-2200rpm, 0.1-0.6Mpa supply pressures were used. For each ΔP test condition, the static eccentricity ratio ε=e/Cr is range from zero to approximately 0.6. Results show that 8 rotordynamic coefficients increase almost linearly with inlet/outlet pressure ratio. Increasing eccentricity ratio weakens the stability of seal-rotor system obviously.

  Info
Periodical
Advanced Materials Research (Volumes 291-294)
Chapter
Vibration, Noise Analysis and Control
Edited by
Yungang Li, Pengcheng Wang, Liqun Ai, Xiaoming Sang and Jinglong Bu
Pages
1965-1969
DOI
10.4028/www.scientific.net/AMR.291-294.1965
Citation
H. Cao, J. G. Yang, W. F. Zhang, R. Guo, "Experimental Identification for Seals Rotordynamic Coefficients Based on Double Plane Balance Method", Advanced Materials Research, Vols. 291-294, pp. 1965-1969, 2011
Online since
July 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: De Qing Guan, Hong Wei Ying, Xiao Lin Zhong
Chapter 7: Frontiers of Computer Applicated in Building
Abstract:By means of the wavelet analysis theory, the damage identification of elastic plate was studied. Adopted the finite element method to analyze...
4078
Authors: Wei Li, Wei Guo, Hua Bai
Chapter 3: Mechanical Engineering and Applied Mechanics
Abstract:To study the aerodynamic characteristics of strayed cable under wind and rain, with the object of the Zhijiang bridge, pressure experiments...
412