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Fatigue Damage Of Steam Turbine Blade Caused By Frequency Shift Due To Solid Buildup - A Case Study.
(Texas A&M University. Turbomachinery Laboratories, 1994)
The case history is presented of a large steam turbine that experienced blade damage after about eight years of service. The probable cause and subsequent solution to the problem are addressed. A discussion of the metallurgical ...
Take Transient Startup And Shutdown Data - Rule Number One.
(Texas A&M University. Turbomachinery Laboratories, 1994)
The thrust herein is to encourage more people to take transient data during startups and rundowns. The common complaint is that it takes too much time and effort to prepare for this information. That argument is "weak" ...
Improving The Mechanical Reliability Of A Turbine-Compressor-Expander Used In A Nitric Acid Manufacturing Plant.
(Texas A&M University. Turbomachinery Laboratories, 1994)
The repair of a turbine-compressor-expander to improve its mechanical reliability is described. The machine is unique, with two open-faced centrifugal compressor impellers in the center, three steam turbine stages overhanging ...
Recent Experiences In Full Load Full Pressure Shop Testing Of A High Pressure Gas Injection Centrifugal Compressor.
(Texas A&M University. Turbomachinery Laboratories, 1994)
The Use Of Engineering Thermoplastics For Centrifugal Compressor Labyrinths.
(Texas A&M University. Turbomachinery Laboratories, 1994)
The use of engineering thermoplastics is increasing rapidly in today's turbomachinery industry. The primary use of these thermoplastics has been as a material upgrade from aluminum for centrifugal compressor labyrinths. ...
False And Misleading Sources Of Vibration.
(Texas A&M University. Turbomachinery Laboratories, 1994)
Many false sources of "vibration" in rotating machinery of all types are described and discussed. The focus is on the practical distinction between actual vibration and spurious indications of vibration caused by problems ...
The Baffling And Temperature Prediction Of Coupling Enclosures.
(Texas A&M University. Turbomachinery Laboratories, 1994)
Increasingly, turbomachinery users are setting upper limits on coupling enclosure temperatures. This is done either to protect personnel, to ensure the proper operating temperature for bearing oil that leaks past seals (or ...
Impeller Repair Techniques For Centrifugal Compressors.
(Texas A&M University. Turbomachinery Laboratories, 1994)
Successfully repairing centrifugal compressor impellers requires careful consideration and planning. The selection of techniques for inspection, material, and welding procedures are determined by numerous factors. Original ...
Selection Of Turbomachinery - Centrifugal Compressors.
(Texas A&M University. Turbomachinery Laboratories, 1994)
One of the primary functions of the rotating machinery engineer is the application and selection of turbomachinery. During the early stages of a project, the process engineer needs to know the performance of turbomachinery, ...
Retuning A Gear Disc Profile To Eliminate High Gear Vibration.
(Texas A&M University. Turbomachinery Laboratories, 1994)
High gear case acceleration levels, experienced during shop string testing of a compressor train, were traced to gear element structural resonance, which was excited by the gear tooth meshing frequency. Finite element ...