Analysis of Misalignment Journal Bearings Considering the Turbulent Effects

DOI

10.2991/iccet-15.2015.4How to use a DOI?

Keywords

wear damage; turbulence effect; misalignment; oil pressure

Abstract

In order to investigate the cause of the typical bush rupture and wear damages in the journal bearing of the steam turbine generator set. The misalignment bearing analysis model of considering lubrication turbulence effects was established. The pressure, thickness distribution of the oil film is obtained. Compared with the alignment results, analysis results can be well explains the bearing bush burst at bearings maximum pressure place due to bearing misalignment, resulting in the film maximum pressure is off-center position, and larger than normal result. The bearing bush burst make friction being intensified, the oil temperature increasing, the viscosity drop, eccentricity bigger, attitude angle smaller, bearing point down, the minimum film thickness smaller, thus causing the wear damages until shutdown. It explains the bearing failure phenomena studied in this paper that bush occurred half wear and bearing rupture location downstream of the minimum film thickness position.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Fanwei Meng
AU  - Rui Liu
AU  - Po Qu
AU  - Guohui Xu
PY  - 2015/11
DA  - 2015/11
TI  - Analysis of Misalignment Journal Bearings Considering the Turbulent Effects
BT  - Proceedings of the 5th International Conference on Civil Engineering and Transportation 2015
PB  - Atlantis Press
SP  - 18
EP  - 22
SN  - 2352-5401
UR  - https://doi.org/10.2991/iccet-15.2015.4
DO  - 10.2991/iccet-15.2015.4
ID  - Meng2015/11
ER  -