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Pumps 101
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
This course is aimed at technical professionals who need a broad-based introduction to basic pump selection, application and operation. This course starts with the basics and builds to provide a full understanding of ...
Motion Amplification: A New Way to Visualize Vibrations
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
Motion Amplification utilizes a camera to turn each pixel into a displacement sensor capable of measuring vibrations and amplifying them to a level visible to the eye. This capability lends itself to an advanced troubleshooting ...
High Performance Coupling and Rotating Machines
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
This course covers the design and application of high performance couplings and rotating machines. Initially the Turbomachinery driver and driven machines are analyzed together with their characteristics and how they affect ...
BB1 Lateral Dynamic Analysis
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
Customer has four 4x8x13 BB1 booster pumps for produced water injection. One pump was recently repaired and ran for only 4 months. Typically these pumps run about 16-18 months. Before shutting down the pump it had a high ...
Structural Natural Frequency Tuning on a Vertical Pump
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
This case study demonstrates the steps taken to solve a structural resonance issue on a VFD driven vertical pump installed in the field. Topics discussed include problem validation, steps taken to solve the issue, the ...
Predicting, Understanding and Avoiding the Ekofisk Rotor Instability Forty Years Later
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
This famous machine is re-examined to assess how well (or not) current design and analytical methods have evolved to avoid shaft whip instability. In addition to reviewing the compressors history and design evolution, the ...
Unsteady Vibration Due to Cavitation in Mixed Flow Pumps
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
In regarding to the large vertical mixed flow pump for seawater supply pump, the authors experienced the strange excessive vibration: the vibration level intermittently changed and the peak frequency was the blade passing ...
Blade Failures on an Axial Compressor by Unexpected Gas Compositions
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
A fifteen stage axial compressor including a bleed extraction was subject to a major overhaul after nearly 20 years of trouble free operation. Shortly after recommissioning and resumption of the production the compressor ...
Large Vibrations on Centrifugal Compressor Caused by Inappropriate Operation During Mechanical Running Test
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
During the mechanical test of a centrifugal compressor, the rotor experienced a sudden increase of the radial vibrations. After re-start, the compressor showed unacceptably high vibrations.
The RCA revealed: The vibrations ...
Accurate Estimation of Start-Up Pulsating Torque of Direct On Line Synchronous Motors Driving Compressor Trains
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
In a compressor train driven by fixed speed synchronous motor (>17MW) was discovered a potential torsional problem on the input shaft of the hydraulic variable speed gear during the start-up phase when only low speed shaft ...