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Critical Review Of Compressor Impeller Vibration Parameters For Failure Prevention.
(Texas A&M University. Turbomachinery Laboratories, 2000)
One of the most difficult diagnostic problems for centrifugal compressors is fatigue failure of an impeller, especially those with covers. The structure of a covered impeller is inherently resistant to alternating forces ...
Evaluation Of Centrifugal Compressor Stability Margin And Investigation Of Antiswirl Mechanism.
(Texas A&M University. Turbomachinery Laboratories, 2003)
Stringent stability screening criteria by the American Petroleum Institute (API) result in higher level rotor stability analyses to be performed on more intermediate-pressure compressor rotors and in more detail. These ...
Compressor Discharge Pipe Failure Investigation With A Review Of Surge, Rotating Stall, And Piping Resonance.
(Texas A&M University. Turbomachinery Laboratories, 2002)
Rotating stall, even with multiple cells, can contribute to piping excitation due to acoustic energy traveling down the pipe as a plane wave. The main objective of the paper is to describe causes and solution of fatigue ...
Gas Damper Seal Test Results, Theoretical Correlation, And Applications In Design Of High-Pressure Compressors.
(Texas A&M University. Turbomachinery Laboratories, 2000)
The rotordynamic and leaking characteristics of two types of gas damper seals, honeycomb seal and pocket damper seal, were experimentally evaluated on a rotating test rig. The effect of supply pressure, preswirl, and seal ...
Elimination Of Flow-Induced Instability From Steam Turbine Control Valves.
(Texas A&M University. Turbomachinery Laboratories, 2003)
This paper describes two steam turbine governor valve failures in the same installation, the troubleshooting that determined the root cause, and the new valve designed to prevent similar failures. The original governor ...
Rotating Component Modal Analysis And Resonance Avoidance Recommendations.
(Texas A&M University. Turbomachinery Laboratories, 2004)
Rotating blade and disk fatigue failures cause a fairly small percentage of machine shutdowns, but can require extensive repairs and downtime. This tutorial focuses on steam turbines, centrifugal compressors, and axial ...