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Redesign Of Large Steam Turbines For Increased Reliability.
(Texas A&M University. Turbomachinery Laboratories, 1999)
Two similar large steam turbines in an ethylene plant are profiled. One drives the cracked gas compressor train and the other
drives the propylene refrigeration compressor. The two machines are similar and this paper ...
Retrofitting A Large Steam Turbine With A Mechanically Centered Squeeze Film Damper.
(Texas A&M University. Turbomachinery Laboratories, 1999)
Reviewed is the application of a squeeze film damper to a large
steam turbine that addresses high vibration passing through the
first critical speed. The turbine was the fifth near identical machine
purchased over the ...
Unexpected Rotordynamic Instability In A "Proven" FCC Wet Gas Compressor.
(Texas A&M University. Turbomachinery Laboratories, 1999)
The cause and effects of a large subsynchronous vibration (3.5
mils at 3490 cpm) in an FCC wet gas compressor are examined.
The compressor is driven at 7850 rpm by a 6000 hp electric motor,
through a speed-increasing ...
Solutions To Field Problems Of A Gas Turbine-Axial Flow Chemical Process Compressor Train Based On Computer Simulation Of The Process.
(Texas A&M University. Turbomachinery Laboratories, 1999)
Operating and maintaining key rotating equipment in a petrochemical service and tight economic constraints requires an indepth evaluation in performance deterioration of key gas turbines and axial flow compressor parameters. ...
Methodology Of Open Bladed Impeller Resonance Indentification.
(Texas A&M University. Turbomachinery Laboratories, 1999)
Open bladed impellers (impellers without shrouds) with high rotational speeds are a vital component of centrifugal compressors. The impeller reliability is directly related to the compressors’ successful operation and ...
The Use Of Computational Fluid Dynamics And Scale Model Component Testing For A Large FCC Prototype Air Compressor.
(Texas A&M University. Turbomachinery Laboratories, 1999)
The purpose of this paper is to describe the use of computational fluid dynamics (CFD) and scale model testing techniques that were used accurately predict and confirm the performance of a large centrifugal air compressor. ...
Advances In Erosion Prediction Of Axial Flow Expanders.
(Texas A&M University. Turbomachinery Laboratories, 1999)
Hot gas expander flow path erosion costs the refining industry millions of dollars per shutdown in labor, material, and lost production to replace eroded components. With erosion being the life limiting factor, there is ...
Analysis Of Hot Section Failures On Gas Turbines In Process Plant Service.
(Texas A&M University. Turbomachinery Laboratories, 1999)
In-service failures of process plant gas turbines can have major economic consequences in terms of repairs and downtime. Following such an incident, steps need to be taken to avoid a recurrence. This is best accomplished ...
Improvement Of Centrifugal Compressor Reliability Handling High Pressure And High Density Gas.
(Texas A&M University. Turbomachinery Laboratories, 1999)
Centrifugal compressors handling high pressure and high density
gas can sometimes encounter trouble such as rotor instability and
impeller resonance vibration while in operation. In order to eliminate
these problems, ...
Influence Of Oil Injection Method On Thrust Bearing Performance At Low Flow Conditions.
(Texas A&M University. Turbomachinery Laboratories, 1999)
The advantage of operating a thrust bearing in an evacuated cavity has been well documented in the literature. By draining the
oil from the bottom of the housing and eliminating standing oil around the thrust collar, ...