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Now showing items 21-30 of 53
Vibration Problems (Acoustical And Bearing Housing Resonance) Resolved On Centrifugal Pump
(Texas A&M University. Turbomachinery Laboratories, 2008)
Installing VFDs on pumps that were formerly constant speed pumps can cause new vibration problems to be encountered. Acoustical resonance conditions can occur in the long cross over. New methods of measuring acoustical ...
A Vibration Problem In Vertical Circulating Water Pumps
(Texas A&M University. Turbomachinery Laboratories, 2008)
Pump Baseplate Resonance Responsible For Large Piping Vibration And Component Failures
(Texas A&M University. Turbomachinery Laboratories, 2008)
Emerging Advanced Technologies to Assess Reliability of Industrial Steam Turbine Blade Design
(Texas A&M University. Turbomachinery Laboratories, 2008)
New industrial processes sometimes require equipment that either has not yet been applied to the new use or even a completely new design. In some situations, established design criteria that have resulted in reliable ...
A Review of Aerodynamically Induced Forces Acting on Centrifugal Compressors, and Resulting Vibration Characteristics of Rotors
(Texas A&M University. Turbomachinery Laboratories, 2008)
There are several sources of nonsynchronous forced vibration of centrifugal compressor rotors. Many of them are aerodynamic phenomena, created within the gas path of the compressor. Phenomena such as impeller stall, diffuser ...
Vibrations in High Pressure Centrifugal Compressors of Offshore Platforms
(Texas A&M University. Turbomachinery Laboratories, 2008)
During the startup of one of the compression trains of an offshore platform, in August/2006, excessively high vibrations were observed at the high pressure compressor. The same problem was also verified one week later, ...
Tilting Pad Journal Bearing Starvation Effects
(Texas A&M University. Turbomachinery Laboratories, 2008)
Improved turbomachinery aerodynamic performance requirements have increased journal bearing operating speeds and loads well above traditionally acceptable values. For example, for high performance gearboxes, pinion bearing ...
The Synchronous Rotor Instability Phenomenon (Morton Effect)
(Texas A&M University. Turbomachinery Laboratories, 2008)
This paper gives an overview on the "Morton Effect" and explains how synchronous rotor instability, due to nonuniform heating of bearing journals, can occur in high-speed turbomachinery. Theoretical investigation by Keogh ...
A Det Norske Veritas Modeled Qualification Process for a Turbocompressor Incorporating a Rotary Separator Known as the Integrated Compression System
(Texas A&M University. Turbomachinery Laboratories, 2008)
The Det Norske Veritas (DNV) Technology Qualification Process requires several steps to be completed before new technology can be qualified for service based on proven experience. This paper will present a brief overview ...
Reducing Reliability Incidents And Improving Meantime Between Repair
(Texas A&M University. Turbomachinery Laboratories, 2008)
Recently much attention is being given to the total cost of pump ownership. In many cases, for process plants, the cost of unscheduled maintenance can become critical since these costs can impact production runs and result ...