Generator Cooling Fan Vibrational Problems: A Design and Operational Case in Jordan

Naamneh, Rakan and Alboursh, Asem and Al-Amer, Ayman (2017): Generator Cooling Fan Vibrational Problems: A Design and Operational Case in Jordan. Forthcoming in: Journal of Economics Bibliography , Vol. 2, No. 154 (20 May 2017): pp. 25-65.

Abstract

This project covers certain types of rotor generator vibrational problem, including both conventionally-cooled (indirect copper cooling) windings and direct cooled copper windings as well as those with spindle and body mounted retaining rings. The options for rewinding, modifying, or upgrading are provided for each case type as encountered in the Jordan Petroleum Refinery. Generally; when dealing with generator rotors, problems like oversizing, misalignment, rotor imbalance, off-design operation, lubrication problems, shaft seals, cavitation, balancing system, and vibration are encountered. Methods of resolving vibration problem diagnosis were discussed using different techniques like vibration design analysis which will enhance root cause problems. We have proposed different maintenance best practice like rotor dynamic balance, appropriate operation, seals selection, and lubricant selection. At the end we have proposed a design solution appropriate for failure prevention using rotor balancing after rework or modifications.

• Item Type: MPRA Paper
• Language: English
• Keywords: conventionally cooled winding, lubrication, design failure
• Subjects: O - Economic Development, Innovation, Technological Change, and Growth > O5 - Economywide Country Studies > O53 - Asia including Middle East; Y - Miscellaneous Categories > Y4 - Dissertations (unclassified) > Y40 - Dissertations (unclassified)

References

1. Alsayyed, PhD, "A Solution to low Vibration Problems in conventionally cooled Compressor Trains Running at 33 MPa Discharge Pressure", Asia turbomachinery pump symposium Singapore,22-25 FEB 2016

2. Ronald J. Zawoysky & Karl C. Tornroos,” GE Generator Rotor Design, Operational Issues, and Refurbishment Options", GE power system publication GER-4212, AUG 2001.

3. M O’sullivan," Diagnosis of Vibration Problems in Holland", B&K application notes BO-0297-11.

4. Tomasz Gałka ,"Vibration-Based Diagnostics of Steam Turbines", Mechanical Engineering, Dr. Murat(2012). Gokcek (Ed.), ISBN: 978-953-51-0505-3, In Tech, Available Source:http://www.intechopen.com/books/mechanical-engineering/vibration-based-diagnostics-of-steam-turbines.

5. Thomas Bertolini and Thomas Fuchs," Vibrations and Noises in Small Electric Motors",P 25-27,Süddeutscher Verlag onpact GmbH, 81677 Munich,b Germany,2012. Source www.sv-onpact.de.

6. Electronic Source (unidentified author): Source:http://www.waukbearing.com/en/engineered-fluid-film/product-lines/This(r)-integral-squeeze-film-damper

7. Donald R. Smith and Harold R. Simmons, “Unique Fan Vibration Problems”, Cases and Solutions, 01/1980. Source: https://www.researchgate.net/publication/295390726_UNIQUE_FAN_VIBRATION_PROBLEMS_THEIR_CAUSES_AND_SOLUTIONS