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Now showing items 51-59 of 59
Journal Bearing Vibration and SSV Hash
(Texas A&M University. Turbomachinery Laboratories, 2008)
Peculiar, low-frequency, radial vibrations have been observed in various turbomachinery using tilt-pad journal bearings. Unlike discrete subsynchronous spikes that often indicate a serious problem, the vibrations are ...
Designing Oil-Free Screw Compressor Systems for Acoustic Resonance During Shop Testing, Field Startup, and Process Operation
(Texas A&M University. Turbomachinery Laboratories, 2008)
An OFS (Oil Free Screw) compressor experienced problems meeting the API 619 3rd Edition vibration level acceptance criteria during shop testing. Extensive testing identified the primary mechanism that increased the rotor ...
Evaluation and Successful Modification of Impeller Using Forced Response Analysis
(Texas A&M University. Turbomachinery Laboratories, 2008)
Investigation of Corrosion Fatigue Phenomena in Transient Zone and Preventive Coating and Blade Design Against Fouling and Corrosive Environment for Mechanical Drive Turbines
(Texas A&M University. Turbomachinery Laboratories, 2008)
For mechanical drive steam turbines, the investigation results of corrosion fatigue phenomena in the transient zone are introduced, including basic phenomena on expansion line and actual design and damage experience. These ...
Design and Mitigation Techniques for Applications with Possible Liquid Contamination of the Sealing Gas Dry Gas Seal System
(Texas A&M University. Turbomachinery Laboratories, 2008)
A compressor in a natural gas gathering service experienced multiple seal failures on the discharge end. Synthetic oil mist contained in the sealing gas was identified as a significant source of contamination that caused ...
Solving Structural Vibration Problems Using Operating Deflection Shape (ODS) Analysis
(Texas A&M University. Turbomachinery Laboratories, 2008)
VFD Induced Coupling Failure
(Texas A&M University. Turbomachinery Laboratories, 2008)
A catastrophic failure of a high performance disc coupling connecting the speed increaser and LP compressor in a VFD controlled 18,300 HP motor/speed increaser/LP compressor/HP compressor train, led to months of reduced ...
A New Method of Accurately Identifying the Location and Movement of Forward and Backward Bending Modes Using Magnetically Suspended Rotor Systems
(Texas A&M University. Turbomachinery Laboratories, 2008)
Rotordynamic calculations done on most turbomachinery often discount or even completely ignore the “backward” modes. In fact, many rotating equipment engineers have never observed a backward mode, leading some to doubt ...
Forage legumes for Texas
(2008)