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TROUBLESHOOTING OF AIR COMPRESSOR HIGH VIBRATION DURING COMMISSIONING STAGE
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
An air compressor encountered high vibration issue during its commissioning stage, leading to impeller and casing rub. Inspection performed found dislodged shrink fitted thrust collar, resulting in excessive axial movement ...
High Frequency Acoustic Excitation in Centrifugal Compressor and Adjacent Piping Vibration
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
In a centrifugal compressor, interactions between impeller blades and stationary parts such as diffuser vanes will generate high frequency pressure pulsations. The frequencies of these pulsations, so called “blade passing ...
ON THE INFLUENCE OF LUBRICANT FEEDHOLE SIZE AND END PLATE SEALS’ CLEARANCE ON THE DYNAMIC PERFORMANCE OF INTEGRAL SQUEEZE FILM DAMPERS
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
In rotating machinery, squeeze film dampers (SFDs) reduce rotor synchronous response amplitude motions, provide structural isolation and enhance rotordynamic stability. Compared to conventional squirrel cage supported SFDs, ...
Gas Turbine Load Limited due to High Exhaust Temperature Deviation
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
This case study presents an incident of sudden exhaust temperature spread increase of a medium power range Gas Turbine Generator (GTG) during normal operation. The analysis of exhaust temperature spread, field troubleshooting ...
ADVANCES IN AMMONIA COMBUSTION CHEMISTRY AND NH3 SENSING USING LASER DIAGNOSTICS
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
Ammonia (NH3) is a promising alternative carbon-free fuel. For this reason and others, significant research is directed towards studying NH3 especially pertaining to its chemical kinetics. A brief review of the literature ...
MITIGATION OF AXIAL VIBRATION AND THRUST BEARING FAILURES IN ROTATING MACHINERY
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
The objectives of this tutorial are to familiarize rotating machinery engineers involved in detailed engineering and site operation on various aspects of axial vibration in rotating machinery. Among all rotating machines ...
MODERN LUBRICATING OIL SYSTEMS
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
Lubricating oil systems are vital to operation, long-term reliability, and availability of turbomachinery trains (or strings) which are strategic and expensive components of industrial plants. Sometimes, the entities that ...
EVALUATION OF VARIOUS METHODS FOR MANUFACTURING ONE PIECE, SMALL TIP OPENING IMPELLERS
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
Closed centrifugal compressor impellers have been manufactured using several methods through the years. Due to limitations of the materials and machining processes, most of these impellers have been manufactured in what ...
SILO EXHAUST FAN – STRUCTUAL VIBRATION ODS AND MA
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
This case study outlines how structural vibration was resolved using two different technologies and highlighting secondary issues that can arise due to continued vibration because of structural resonance. Continued high ...
CENTRIFUGAL COMPRESSOR IN HIGH FLOW AND LOW HEAD APPLICATIONS: AN IMPELLER DESIGN CONCEPT FOR COPING WITH THE INCREASING VOLUME FLOW IN POLYOLEFIN PROCESSES
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
The paper discusses the development of a novel impeller design concept that addresses changing requirements for radial centrifugal compressors applied in the polymer/downstream petrochemical industry. The impeller design ...