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Instability of multistage compressor K1501
- Source :
- NASA. Lewis Research Center Rotordynamic Instability Problems in High-Performance Turbomachinery, 1986.
- Publication Year :
- 1987
- Publisher :
- United States: NASA Center for Aerospace Information (CASI), 1987.
-
Abstract
- The K1501 compressor, driven by a steam turbine, is used to transport synthetic gas in fertilizer plants of 1000 tons daily production. The turbo-compressor set, which had been in operation since 1982, vibrated rather intensely, and its maximum load was only about 95 percent of the normal value. Damaging vibration to pads and gas-sealing labyrinths occurred three times from 1982 to 1983 and resulted in considerable economic loss. From the characteristics of the vibration, we suspected its cause to be rotor instability due to labyrinth-seal excitation. But, for lack of experience, the problem was not addressed for two years. Finally, we determined that the instability was indeed produced by labyrinth-seal excitation and corrected this problem by injecting gas into the middle-diaphragm labyrinths. This paper primarily discusses the failure and the remedy described above.
- Subjects :
- Mechanical Engineering
Subjects
Details
- Language :
- English
- Database :
- NASA Technical Reports
- Journal :
- NASA. Lewis Research Center Rotordynamic Instability Problems in High-Performance Turbomachinery, 1986
- Publication Type :
- Report
- Accession number :
- edsnas.19870012770
- Document Type :
- Report