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Investigation of a Compressor Coupling Failure by Torsional Excitation
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
This case study examines a repeat compressor coupling failure that was a result of a complex, dynamic interaction of components that excited the 2nd torsional natural frequency of the train. The mature unit had operated ...
Aero-Derivat ive Gas Turbine Vibration Troubleshooting Comparing Traditional ODS and
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
A large aero-derivative gas turbine in electrical generation service was exhibiting high vibration at the LP compressor section (1.5 in/s peak) at low load operation. Thorough testing, using Experimental Modal Analysis ...
New Analytics to Improve Pump Performance
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
Kempner Water Supply Corp. in Central Texas serves a population of 20,000. After installing VFDs, they experienced high pressure spikes which strained their pipe network as well as their staff. Line breaks became a common ...
Introduction of SCC life time estimation for fir tree design on steam turbine
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
Some cracks due to stress corrosion cracking have detected in blade grooves of steam turbine. This presentation describes the residual life and its evaluate method for SCC on Fir tree blade groove.
Conversion of Influence Coefficients among Static-Couple and Multiplane Formats On Two-Plane Balancing
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
The influence coefficient (IC) method is typically used in balancing, especially on-site. For a two-bearing machine, there are basically two approaches to apply this method. The first one is to treat it as a multiplane ...
Laser Welding for Turbomachinery Rotor Restoration
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
Laser cladding is gaining acceptance for restoration of turbine and compressor shafts, which has resulted in increased customer demand for laser cladding options. This has increased the number of laser welding suppliers, ...
Experimental and Numerical Analysis of Starvation in a Tilting Pad Journal Bearing
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
A series of journal bearing tests were conducted to acquire more detailed information on the behavior of individual pads in a tilting pad journal bearing and how the individual behavior may affect the performance and dynamic ...
TURBOMACHINERY FOR OLEFINS PRODUCTION
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
This tutorial covers the basics, applications, and operation of compressors, expanders, and steam turbines in the plastics industry. Plastics manufacturing, which is part of the petrochemical industry, produces polymer ...
IMPELLER MANUFACTURING – UNDERSTANDING THE METHODS & THEIR IMPACT ON PERFORMANCE
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
This tutorial provides an overview of the manufacturing processes used to build centrifugal compressor impellers and how the various processes can impact the performance of these critically important components. Comments ...
Troubleshooting of Start Up for Old Steam Turbine
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
During the start-up of an old steam turbine (about 30 years old), that was internally revamped, it was tripped due to high rotor vibrations. Site investigation was done to find out the root cause. Abnormal casing deformation ...