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Application Of A Heat Barrier Sleeve To Prevent Synchronous Rotor Instability.
(Texas A&M University. Turbomachinery Laboratories, 1998)
This paper explains how synchronous rotor instability can occur
in high speed turbomachinery due to differential heating of bearing
journals. Theoretical investigations have indicated that rotors
supported by fluid-film ...
High Speed Oil-Free Turbomachinery String.
(Texas A&M University. Turbomachinery Laboratories, 1998)
This paper is a discussion of the design, manufacture, test, and
field operation of a totally oil-free string of rotating equipment. The
turbomachinery string consists of a multistage centrifugal
compressor driven by a ...
Vibration And Eccentricity Measurements Combined With Rotordynamic Analyses On A Six Bearing Turbine Generator.
(Texas A&M University. Turbomachinery Laboratories, 1998)
This lecture discusses how the vibration characteristics and
eccentricity measurements were combined with rotordynamic
analyses to help improve the reliability of a turbine generator unit.
It also explains certain ...
Design Modifications And Active Balancing On An Integrally Forged Steam Turbine Rotor To Solve Serious Reliability Problems.
(Texas A&M University. Turbomachinery Laboratories, 1998)
This paper describes the design modifications and active
balancing on a 19,000 hp integrally forged steam turbine rotor to
improve its dynamic characteristics and reliability. The turbine was
purchased as a replacement ...
Starter Motor Sizing For Large Gas Turbine (Single-Shaft) Driven LNG Strings.
(Texas A&M University. Turbomachinery Laboratories, 1998)
The purpose of this paper is to describe how computer
simulation was used to size the main starter motors for single shaft
gas turbine driven compressor strings used in a large LNG plant.
The paper describes how the ...
Root Cause Analysis Of A Long Term Reliability Problem With Reciprocating Compressors In H2 Service.
(Texas A&M University. Turbomachinery Laboratories, 1998)
Three large reciprocating compressors in H2 makeup service had
been a chronic reliability problem for 30 years. Unit revisions
greatly compounded this issue by eliminating builtin spare
capacity. A Root Cause Analysis ...
Acoustic Fatigue Involving Large Turbocompressors And Pressure Reduction Systems.
(Texas A&M University. Turbomachinery Laboratories, 1998)
Much work has been done over the years to predict the potential
for acoustic fatigue in piping systems associated with pressure
reducing systems in the design stage. However, an easily usable
screening criteria for ...
Increased Reliability And Reduction In Long Term Cost Of Ownership Through Proper Spare Rotor Storage, Inspection, Documentation, And Tracking.
(Texas A&M University. Turbomachinery Laboratories, 1998)
Recently, a major chemical company put together a project to
specifically address the repetitive corrosion problem experienced
on the long term storage of critical rotors in a Texas facility.
However, as the strategy ...
Eliminating Oil Leaks By Optimizing Bearing Case Oil Labryinths.
(Texas A&M University. Turbomachinery Laboratories, 1998)
Many pieces of rotating equipment experience oil leaks. Any
piece of equipment with oil fed bearings, such as turbines, motors,
gearboxes, and compressors, are susceptible to oil leaks from the
bearing case seals. Usually ...
Experience With High Speed Induction Motors For Direct Driving Of Compressors.
(Texas A&M University. Turbomachinery Laboratories, 1998)
This paper presents the high speed, high power induction motor as a viable alternative for direct driving of compressors. A comparison is made between the existing different mechanical and electrical solutions, and the ...