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Turbomachinery and Pump Vibrations
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
This group will discuss plant machinery vibration detection, monitoring, and diagnosis, from a Plant O&M point-of-view. All
attendees will be encouraged (but not required) to participate in discussions, and contribute ...
Static and Rotordynamic Analysis of a Plain Annular (Liquid) Seal in the Laminar Regime with a Swirl Brake for Three Clearances
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
Annular seals are non-contacting mechanical elements designed to reduce leakage between two areas of differing pressures such as between two impeller stages in a pump. Circumferential fluid rotation inside the annular ...
Surge Exploration Tests and Second Quadrant Characteristic Dynamic Modeling on High Pressure Ratio Compressor (Hprc) Prototype
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
High Pressure Ratio Compressor (HPRC) technology is based on an innovative architecture that combines unshrouded and shrouded
impellers on a single high-speed shaft to achieve pressure ratios and efficiency levels higher ...
Conventional Servo System to Direct Drive Actuators Why Does It Matter?
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
This paper discusses the development of Actuators over a period of time. The purpose of an Actuator (servo system) is to operate steam turbine control valves. With the increasing demand for better control of steam valves ...
Zero Leakage Compressor Seals
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
Dry gas seal is applied to refrigeration compressor. Some of configurations for dry gas seal system are shown in API 617 and 614, however those systems are designed with condition that leak gas from dry gas seal is released ...
Other Compressors: Reciprocating, Screw (Wet and Dry), Integrally Geared, and Turbo-Expander
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
Suggested Topics:
• Offshore and marine applications
• Cryogenic considerations
• Industry standards
– API 617, 618, API 688, API 670, etc.
• Bearings, seals, and couplings
• Capacity Control
– Speed, IGV, DGV, ...
Impeller Stall Induced by Reverse Propagation of Non-Uniform Flow
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
In the case of centrifugal compressors, minor non-uniform flow
upstream of the impeller is induced by an asymmetrical
configuration in the circumferential direction at the compressor
suction casing. This non-uniform flow ...
Blade Failure on an Axial Compressor Caused by Unexpected Operating at Choke
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2015)
Compressor rotor failure due to fouling at Qatargas condensate refinery
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2015)
•Process Overview
•Hydrogen Recycle Compressor
•The Problem
•Performance Trends
•Compressor Crash
•Vibration analysis
•Internal Inspection of Compressor
•Investigation
•Resolution
•Lessons Learnt
Evaluation of LNG Train Operation Resulting from Refrigeration Compressor Re-wheel
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2015)
• In an LNG production plant, multiple propane (PR)
refrigeration compressor failures since commissioning led to
re-wheeling
• PR refrigeration system was not considered to be the main
bottleneck, nevertheless improved ...