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Modifying a Non-Clog Pump Experiencing Multiple Natural Frequency issues Based on Field Vibration Testing and FEA Analysis
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
In order to fully understand the true causes of the elevated vibration of a non-clog pump, driven by a long drive-shaft, a detailed FEA analysis was used to simulate the entire pump system (foundation and piping) to identify ...
Pump Success Stories
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
Processes across different sectors of energy business. This lecture paper describes two case studies which may help machinery diagnostic engineers / condition monitoring engineer in understanding real life vibration ...
Reciprocating Compressor Crankshaft Fatigue Failure
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
Determining the cause of a crankshaft failure which resulted in significant collateral damage within an Oxygen compressor safety barrier can be challenging despite having the industry recommended instrumentation. This case ...
EFFECT OF REDUCED OIL FLOW RATE ON THE STATIC AND DYNAMIC PERFORMANCE OF A TILTING PAD JOURNAL BEARING RUNNING IN BOTH THE FLOODED AND EVACUATED CONDITIONS
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
The lecture presents measurements of the static and dynamic load performance conducted with a tilting pad journal bearing running under flooded and evacuated conditions and lubricated with flow rates ranging from a nominal ...
Shannon’s Machine Capacity & Degradation
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
Current methodologies on health assessment and diagnostics of systems and components are limited in analysis and accuracy. Methodologies like artificial intelligence or limit checks examine statistical significance rather ...
High Frequency Acoustic Excitation in Centrifugal Compressor and Adjacent Piping Vibration
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
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 ...
Stability Analysis of a Multi-stage Gas Compressor With Swirl-brakes Using Three Dimensional Transient CFD Model
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
Minimizing fluid induced forces through the secondary leakage flow paths in shrouded centrifugal impellers is crucial to improve the rotordynamic stability of high-pressure centrifugal gas compressors. Swirl brakes (SBs) ...
Cavitation Performance Improvement of an Industrial Cryogenic Centrifugal Pump by Implementing Variable Pitch Inducer
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
Cavitation performance improvement of an industrial cryogenic pump is studied in this paper. A variable pitch helical inducer is designed and implemented to the existing pump assembly to enhance the cavitation performance ...
Modern Methods to Detect Degradation in Centrifugal Compressor Performance and Use of Thermodynamic Performance Modelling to Identify Causes
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
Detecting degradation in centrifugal compressor thermodynamic performance can be challenging. Machines can operate at different inlet and discharge conditions, different inlet guide vane positions, different speeds and ...
CALCULATING SHAFT COUPLING MISALIGNMENT FORCES IN FLEXIBLE COUPLINGS
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
The goal for this tutorial is to show a screening method to determine if shaft misalignment forces, moments and directions are significant with common misalignments. This tutorial paper provides information to calculate the ...