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Now showing items 451-460 of 734
CSP03 - Motion Amplification Case Study: Relative Motion between Components
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, [2019])
This case study shows how Motion Amplification video has been used to contribute to identifying the root cause of a seal issue. Motion amplification is a video-processing product and software that detects subtle motion and ...
CSP06 - Poor Hydraulic Performance from Large Barrel Pumps
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, [2019])
A pair of large barrel pumps have experienced poor reliability and poor hydraulic performance since their installation in 1993. Despite repeated overhauls and design changes, the problem persisted. A detailed analysis found ...
CSP11 - Testing and Troubleshooting of Pump Dry Gas Seals Operating with sCO2
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, [2019])
During the testing of a 1 MWe power loop with super critical co2, it was discovered that dry ice formation across dry gas seals would be an issue. This case study looks at the negative effects of dry ice formation and how ...
CSP07 - Cavitation in VFD Driven Mainline Pumps in Series
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, [2019])
Review of start-up cavitation issue for pumps in series. Presents initial findings, performance curve review and solution that solved the issue.
CST16 - A Systematic Method For Determining the Source of Unbalance in a Rotor Assembly
(Turbomachinery LaboratoryTexas A&M Engineering Experiment Station, [2019])
Unbalance is present in rotor systems due to manufacturing and assembly tolerances which results in synchronous vibration during operation. Adherence to API guidelines relative to acceptable levels of rotor vibration is ...
CST15 - Morton Effect With Pedestal Support Influence
(Turbomachinery LaboratoryTexas A&M Engineering Experiment Station, [2019])
This Morton effect case is unique since the mitigation method during the high speed balance (increasing the bearing clearance) is opposite to the mechanical test method (decreasing the bearing clearance). The investigation ...
CST12 - High Vibration at Low Speed on a 25MW Turbogenerator System - Root Cause Investigation
(Turbomachinery LaboratoryTexas A&M Engineering Experiment Station, [2019])
During the comissioning and filed-tests of the turbogeneration system of an oil platform, low speed high vibration levels were observed on the generator shaft and other neighbouring vibration sensors. The vibration was ...
CST13 - Manifestations of Thermal Imbalance in Integrally Geared Compressors
(Turbomachinery LaboratoryTexas A&M Engineering Experiment Station, [2019])
Three case studies showing 3 different manifestations of thermally induced bow/ imbalance in integrally geared machine are presented
TL11 - Numerical and Experimental Analysis of Flow-induced Subsynchronous Vibrations in Integrally Geared Turboexpanders
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, [2019])
Turboexpanders are widely used as energy recovery systems, in plants where a stream of pressurized gas is available as output of the main process. The train is typically composed of a single or multi-stage radial inflow ...
CST05 - Fluid-Film Bearing Damage Detection Based on Vibration Data�
(Turbomachinery LaboratoryTexas A&M Engineering Experiment Station, [2019])
This case occurred during startup after outage on a steam turbine generator. Vibration reached over full scale of 20 mil pp at generator drive end bearing and therefore tripped the unit. The major vibration component that ...