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Now showing items 81-90 of 188
Take Transient Startup And Shutdown Data - Rule Number One.
(Texas A&M University. Turbomachinery Laboratories, 1994)
The thrust herein is to encourage more people to take transient data during startups and rundowns. The common complaint is that it takes too much time and effort to prepare for this information. That argument is "weak" ...
Improving The Mechanical Reliability Of A Turbine-Compressor-Expander Used In A Nitric Acid Manufacturing Plant.
(Texas A&M University. Turbomachinery Laboratories, 1994)
The repair of a turbine-compressor-expander to improve its mechanical reliability is described. The machine is unique, with two open-faced centrifugal compressor impellers in the center, three steam turbine stages overhanging ...
Using A Damper Seal To Eliminate Subsynchronous Vibrations In Three Back-To-Back Compressors.
(Texas A&M University. Turbomachinery Laboratories, 1995)
A new type of labyrinth seal that reduces cross coupled rotor forces and produces a remarkable amount of damping has been invented at Texas A&M University. Laboratory tests have shown complete elimination of critical speeds ...
Thermal Effects In Hydrodynamic Journal Bearings Of Speed Increasing And Reduction Gearboxes.
(Texas A&M University. Turbomachinery Laboratories, 1995)
The objective of this work is to minimize the maximum bearing temperatures under severe operating conditions in speed increasing and reduction gearboxes, and to present experimental data to validate the theoretical ...
Twenty Years Of Experience With A Modular Design System For Centrifugal Process Compressors.
(Texas A&M University. Turbomachinery Laboratories, 1992)
The design of single shaft horizontally split and barrel type compressors is based on a modular design system, which comprises fixed geometry components, i.e., impellers, diffusers, return vane channels, scrolls, and inlet ...
Magnetic Bearing Retrofit Of A High Speed, Eight Stage Coker Compressor.
(Texas A&M University. Turbomachinery Laboratories, 1993)
The design, integration, and implementation of a successful project to retrofit a high speed, eight stage centrifugal compressor with magnetic bearings and gas face seals is presented. The application is removal of light ...
Critical Speeds And The Importance Of Stiffness - A Case Study In The Design And Testing Of A Large Mechanical Drive Steam Turbine To API Standard 612.
(Texas A&M University. Turbomachinery Laboratories, 1993)
Rotordynamics has long been one of the major considerations in the design of variable speed rotating equipment. Bearing support stiffness is a significant factor in the designer's ability to predict critical speeds and ...
Analysis Of Torsional Vibrations In Rotating Machinery.
(Texas A&M University. Turbomachinery Laboratories, 1993)
Predicting And Verifying Rerated Compressor Performance Through Single Stage Scale Model And Limited Field Testing.
(Texas A&M University. Turbomachinery Laboratories, 1993)
Performance verification of centrifugal compressor rerates creates a unique challenge to turbomachinery users. It is not often practical to perform flange-to-flange performance tests on machinery already installed in the ...
Hydraulic Removal Of Coupling Hubs - Keyed And Keyless.
(Texas A&M University. Turbomachinery Laboratories, 1993)
In rotating machinery, torque is transmitted from shafts to coupling hubs (or vice versa) through keys, friction, or a combination of the two. As a rule; coupling hubs must be installed on shafts with a certain amount of ...