The paper presents results of a modal analysis for developing a project of a provisory axle of a 69 MW generator’s rotor. The uniqueness of this project, using the modal analysis technique, is that a whole generator set was temporarily (about 90 days) replaced by a sole axle projected, designed, and manufactured by the user. The specific aim of this provisory axle is to provide net 39 MW at 3600 rpm to the blower of the CST’s #1 Blast Furnace during maintenance period of the extracted rotor and without additional risks of interrupting normal operations of steel production. The theoretical modal analysis of the provisory axle was developed with the aid of ANSYS 5.6 with SOLID type elements. The project was based on the geometry of the rotor to be temporarily replaced and main field boundaries conditions were also taken in account as, for example, the clamps in the flanges and the supports in the bearings. After balancing, and under over speed conditions, experimental tests were accomplished successfully, by means of a test “shooting” tunnel, as to check the theoretical critical resonances data and to verify the structural integrity conditions after testing. The results of the theoretical model were also proved successful after the installation, start up, and operation in the field.
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ASME 2005 Power Conference
April 5–7, 2005
Chicago, Illinois, USA
Conference Sponsors:
- Power Division
ISBN:
0-7918-4182-0
PROCEEDINGS PAPER
Design of a Provisory Axle for Substitution of a 69MW Generator’s Rotor
Salustiano Martins Pinto Junior,
Salustiano Martins Pinto Junior
CST, Serra, Brazil
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Hernani De Pinho Carvalho
Hernani De Pinho Carvalho
CST, Serra, Brazil
Search for other works by this author on:
Salustiano Martins Pinto Junior
CST, Serra, Brazil
Hernani De Pinho Carvalho
CST, Serra, Brazil
Paper No:
PWR2005-50016, pp. 1-6; 6 pages
Published Online:
October 27, 2008
Citation
Pinto Junior, SM, & De Pinho Carvalho, H. "Design of a Provisory Axle for Substitution of a 69MW Generator’s Rotor." Proceedings of the ASME 2005 Power Conference. ASME 2005 Power Conference. Chicago, Illinois, USA. April 5–7, 2005. pp. 1-6. ASME. https://doi.org/10.1115/PWR2005-50016
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