Testing of a simulated rotor system supported on gas foil bearings for a Microturbine

Author

Bo Zhang ; Shemiao Qi ; Haipeng Geng ; Yanhua Sun ; Sheng Feng ; Lie Yu

Author_Institution

State Key Lab. for Strength & Vibration of Mech. Struct., Xi´an Jiaotong Univ., Xi´an, China

fYear

2014

fDate

3-6 Aug. 2014

Firstpage

21

Lastpage

26

Abstract

The rotordynamic characteristics of a simulated rotor system supported on gas foil bearings was investigated, which has a rated speed of 24 krpm. A test rig was established and assembled to simulate the operating performance of the rotor system for a microturbine. The compliant gas foil journal and thrust bearings were designed to support the rotor. The rotor system was driven by high pressure gas pushing on the impellers. As the rotor speed was accelerated to the rated speed of 24 krpm, the rotor response was mostly synchronous. The rotor system was unstable at the speed decreasing to 18 krpm. The paper presents the design, the operational procedures, and preliminary test results for a simulated rotor supported on gas foil bearigs test rig.

Keywords

machine bearings; micromechanical devices; rotors (mechanical); turbines; gas foil bearings; microturbines; rotor speed; rotordynamic characteristics; simulated rotor system; thrust bearings; Educational institutions; Hydraulic turbines; Impellers; Materials; Rotors; Shape; Vibrations; frequency; gas foil bearing; rotordynamic anaylsis; test rig;

fLanguage

English

Publisher

ieee

Conference_Titel

Mechatronics and Automation (ICMA), 2014 IEEE International Conference on

Conference_Location

Tianjin

Print_ISBN

978-1-4799-3978-7

Type

conf

DOI

10.1109/ICMA.2014.6885665

Filename

6885665