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Design, Operation, And Maintenance Considerations For Improved Dry Gas Seal Reliability In Centrifugal Compressors.
(Texas A&M University. Turbomachinery Laboratories, 2001)
The use of dry gas seals in process gas centrifugal compressors has increased dramatically over the last 20 years, replacing traditional oil film seals in most applications. Over 80 percent of centrifugal gas compressors ...
Online, Continuous Monitoring Of Mechanical Condition And Performance For Critical Reciprocating Compressors.
(Texas A&M University. Turbomachinery Laboratories, 2001)
This paper outlines the typical problems seen in reciprocating compressors and shows that the existing type of monitoring systems, consisting of vibration level, rod drop, rod runout, and valve cap temperatures, often ...
Innovative Gas Turbine Performance Diagnostics And Hot Parts Life Assessment Techniques.
(Texas A&M University. Turbomachinery Laboratories, 2001)
Traditional service and maintenance contracts are evolving to new form of relationship between providers and operators requiring deep changes in service offerings, with strong emphasis on high-tech contents. In gas turbine ...
Efficiency Improvements On Large Mechanical Drive Steam Turbines.
(Texas A&M University. Turbomachinery Laboratories, 2001)
Many of the mechanical drive steam turbines in service in the world today were designed without the demands for optimum efficiency. In order to meet the changing economic requirements that plants face, technological solutions ...
Rotor Instability Problems In An Integrally Geared Compressor Supported By Tilting Pad Bearings.
(Texas A&M University. Turbomachinery Laboratories, 2001)
The appearance of a strong subsynchronous instability in an overhung compressor highlights the fact that rotordynamic instabilities are not restricted to high-pressure multistage between bearing compressors with overhung ...
Improved Steam Turbine Leakage Control With A Brush Seal Design.
(Texas A&M University. Turbomachinery Laboratories, 2001)
Brush seal designs offer improved leakage control over conventional labyrinth seals by applying a compliant bristle with very tight clearance over the rotating shaft. Originally developed for the aircraft engine industry, ...
Full-Load Testing Of An All-Electric Centrifugal Compressor For Miscible Gas Injection.
(Texas A&M University. Turbomachinery Laboratories, 2001)
A two casing high-pressure injection compressor train driven by a directly coupled high-speed induction motor was tested to demonstrate satisfactory electrical, aerothermal, and rotordynamic performance. Some key test ...
Two Unusual And Catastrophic Bearing Failures Caused By Electrical Arcing In The Oil Film, Their Causes, And The Surprisingly Simple Solutions That Cured Them.
(Texas A&M University. Turbomachinery Laboratories, 2001)
Rotating equipment engineers are frequently not prepared to deal with the catastrophic damage that often accompanies electrical arcing in the oil film of high-speed turbomachinery. Electrical engineers at the site are often ...
A Study Of Parameters That Affect Pivoted Shoe Journal Bearing Performance In High-Speed Turbomachinery.
(Texas A&M University. Turbomachinery Laboratories, 2001)
Journal bearing pad temperatures, oil flow requirements, and power losses can impose limitations on the design and operation of high-speed turbomachinery. Over the past few years, the authors have conducted extensive tests ...
Centrifugal Compressor Noise Reduction By Using Helmholtz Resonator Arrays.
(Texas A&M University. Turbomachinery Laboratories, 2001)
Centrifugal compressors used in the pipeline market generate very strong noise, which is typically dominated by the blade passing frequency and its higher harmonics. The high level of noise is not only very disturbing to ...