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Now showing items 191-200 of 264
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 ...
Turbine Bearing Housing Fire Accident Due To hydrogen inflow into nitrogen line of dry gas seal
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
Fire incidents occurred in the turbine bearing housing at every start-upsince the original wet type seal in the compressor was replaced with a dry gas seal(DGS). The first investigation focused on leakage of the lube oil ...
An Overview of the Design and Performance Testing of a 275 BAR Integrally Geared Supercritical CO2 Compressor for Power Generation
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
An integrally geared compressor-expander (compander) for supercritical CO2 (sCO2) was developed to convert thermal energy to electricity. With operating pressures of 275 bar, this turbomachine represents the state of the ...
Whats inside the ‘box’ when considering API Piping Plan 54?
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
API Piping Plan 54 utilizes an external source to provide a clean pressurized barrier fluid to a dual pressurized mechanical seal designed to allow minimal leakage across the primary sealing interface into the process ...
Power Turbine Field And Shop Balance Experience
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
A power turbine (PT) experienced a high 1X vibration issue. Balancing was attempted at two accessible planes on the shaft section. However, the unit could only operate with vibration below the alarm level in steady-state ...
Precision Grouting of Turbomachinery
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
Rotating equipment being installed in industrial environments, including refineries and chemical processing plants, are critically aligned with exact tolerances. When in operation, this equipment experiences heavy dynamic ...
Transforming Maintenance Using Virtual Assembly
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
Virtual assembly is challenging historical maintenance paradigms by reducing durations up to 75%, while improving quality and safety. Turbomachinery can be virtually assembled to identify and address assembly issues prior ...