Kaybob Revisited: What We Have Learned about Compressor Stability from Self-Excited Whirling
| Autor: | E. J. Gunter, Brian K. Weaver |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Engineering
Acoustics and Ultrasonics Article Subject lcsh:QC221-246 Stability (learning theory) Self excited 02 engineering and technology Troubleshooting 01 natural sciences law.invention Damper 0203 mechanical engineering law 0103 physical sciences 010301 acoustics Groove (engineering) Bearing (mechanical) business.industry Building and Construction Structural engineering Vibration 020303 mechanical engineering & transports Mechanics of Materials lcsh:Acoustics. Sound business Gas compressor |
| Zdroj: | Advances in Acoustics and Vibration, Vol 2016 (2016) |
| ISSN: | 1687-6261 |
| DOI: | 10.1155/2016/7368787 |
| Popis: | The Kaybob compressor failure of 1971 was an excellent historic example of rotordynamic instability and the design factors that affect this phenomenon. In the case of Kaybob, the use of poorly designed bearings produced unstable whirling in both the low and high pressure compressors. This required over five months of vibration troubleshooting and redesign along with over 100 million modern U.S. dollars in total costs and lost revenue. In this paper, the history of the Kaybob compressor failure is discussed in detail including a discussion of the ineffective bearing designs that were considered. Modern bearing and rotordynamic analysis tools are then employed to study both designs that were considered along with new designs for the bearings that could have ultimately restored stability to the machine. These designs include four-pad, load-between-pad bearings and squeeze film dampers with a central groove. Simple relationships based on the physics of the system are also used to show how the bearings could be tuned to produce optimum bearing stiffness and damping of the rotor vibration, producing insights which can inform the designers as they perform more comprehensive analyses of these systems. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|