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Now showing items 11-20 of 220
Mechanical (Liquid) Seals: General (Installation, Operation, Troubleshooting, and Retrofitting)
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
Mechanical seals are the most common method of sealing industrial centrifugal pumps and other rotary equipment. Although the
basic concepts of a seals are simple, successfully using seals requires an understanding of the ...
Centrifugal Compressors: Operation and Maintenance, Advanced Design, Wet and Sour Gas Operation
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
Topics Outline:
• Meeting current rotordynamics stability standards
• High flow coefficient/mach number impellers
• Low flow coefficiens/high pressure impellers; Reynolds correction
Complicated high pressure gas properties. ...
Gas Turbines: Operation & Maintenance
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
Suggested Topics:
• Preventive/predictive maintenance
Condition monitoring
• Air filtration onshore and offshore
Fogging/evaporative cooling/inlet chilling
• Liquid fuel handling and storage
• Gas fuel issues
• Lean premix ...
Torsional Modal Damping of a LCI Driven Geared Moto-Compressor Train: Evaluation, Optimization Criteria and Active Control
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
The torsional modal response of geared compression trains
driven by Variable Speed Drive Systems (VSDS) can be
heavily affected by electro-mechanical interaction phenomena,
both in terms of excitation mechanism and resulting ...
Investigation of High Bearing Temperature in Centrifugal Compressor
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
Suction side Journal bearing temperature increased to around 130 degC from 60 degC instantaneously. Further the temperature was decreased to 80 degC accompanied by increase in rotor vibration.(from 5 to 15 ?m p-p) •Bearing ...
Fundamentals of Fluid Film Thrust Bearing Operation and Modeling
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
Widely used in turbomachinery, the fluid film thrust bearing is critical to the overall reliability of a machine. Their design complexity and application severity continue to increase, making it challenging for the plant ...
Rotor-Bearing Dynamics of Integrally Geared Turbomachinery
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
This tutorial focuses on the rotordynamic characteristics of
integrally geared compressors and expanders. Although the
focus is for turbomachinery the topics discussed also apply to
industrial gearing. The topics covered ...
Investigation of unexpected Trips in Steam Turbine
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
A 56 MW steam turbine tripped several times over a short period of time
although the trip signal was not sent. A thorough examination of the turbine at site ruled out any problems with the trip system. The pressure data ...
Molten Urea Transfer Pump Seal Failures
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
Urea melt pumps had been a reliability concern since commissioning (1992).
Majority of the concerns were related to the failure of mechanical seal.
Unexpected failures of seal were encountered during plant startups or ...
Benefits of Installing Restrictive Orifice Plates on the Suction of Reciprocating Pumps: 1D Pulsation and CFD Studies
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
It is well understood that static pressure at the inlet of reciprocating pumps, quantified typically by Net Positive Suction
Head Available (NPSHA), must be sufficient to avoid cavitation in the pump suction manifold and ...