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Now showing items 111-120 of 158
Performance of additive manufactured hydrodynamic tilting pad bearings with internal pad cooling
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2020)
The demand for higher power densities in gear-type compressors is pushing the loading of its already highly loaded pinions to even higher levels. The typically applied tilting-pad bearings are exposed to high circumferential ...
SUB-SYNCHRONOUS TORSIONAL INTERACTION (SSTI) CASE STUDY: GENERAL APPROACH APPLIED TO A REAL LNG PLANT
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2020)
Scope of this Case Study is to apply a general approach used for Sub-Synchronous Torsional Interaction (SSTI) studies to a real Liquefied Natural Gas (LNG) plant, where severe SSTI events have been observed during commissioning ...
Vertical Pump Resonance, Finite Element Modeling, and Purchase Specifications
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2020)
When natural frequencies are well separated from machine generated vibration/forcing frequencies there is little amplification, but when not well separated significant vibration amplification can occur due to resonance. ...
Analyzing and Resolving an ID Fan Failure Due to Torsional Vibration
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2020)
In order to better control speed of the electric motor-driven ID Fan, the existing fluid coupling was replaced with avariable speed drive, but this led to two failures of the motor shaft and coupling. The drivetrain was ...
Carbon Ring Seal Failure in a High Pressure CO₂ Compressor
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2020)
During commissioning of a new 8-stage CO₂ pipeline compressor, higher than expected seal vent flows were detected from the carbon ring seals in the high pressure (HP) stages. The problem was severe enough that the machine ...
A PRACTICAL APPROACH FOR MEASURING ENERGY AND CARBON PERFORMANCE OF TURBOMACHINERY IN OFFSHORE APPLICATIONS
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2021)
The purpose of this work is to present the first results of a practical approach developed for measuring the performance on energy and carbon of turbomachinery installed at offshore oil production plants, based on the ...
DIAGNOSIS OF SCREW PUMP FLOW INSTABILITY FROM CASING VIBRATION – A HOLISTIC MACHINERY DIAGNOSTIC APPROACH.
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
This paper discusses the diagnosis, further analysis and resolution of abnormally high vibration and noise detected on Lube Oil (LO) screw pumps A & B supplying a Turbo Expander Compressor (TEC). During the initial ...
Installation of a Stall Ring to Mitigate Boiler Feed Water Pump NPSH3 Requirements at Low Flow
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
An ubiquitous multistage boiler feed water pump for a SMR Hydrogen Plant in a refinery was specified to meet feed water requirements at plant design hydrogen capacity and at a turndown rate. During testing, it was discovered ...
Effects Of Seal Configuration On Seal Performance In Contaminated Applications
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
Vibration Field Problem Resolved with Analytical Diagnostic Approach and Innovative Impeller Design
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
Several pumps of same design exhibited field vibrations above API limits, dominated by Vane Passage Frequency (VPF). Root cause analysis included both experimental and theoretical paths.Experimental investigation , with ...