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Now showing items 21-30 of 171
High-Speed Gear Vibration And Noise Experience
(Texas A&M University. Gas Turbine Laboratories, 1977)
High-speed gear pinion precession-shuttling and noise, caused by overhanging weight of the coupling and by misalignment forces generated by tooth friction in the coupling, are being controlled by reduced bearing clearances. ...
Installation Of Large Rotating Equipment Systems - A Contractor's Comments
(Texas A&M University. Gas Turbine Laboratories, 1976)
The profitability, reliability and maintenance of gas turbine driven centrifugal compressor units are not inherent with the machinery, but for the most part, depend on the piping system to which they are connected and the ...
Site Balancing Of A Large Flexible Rotor Containing Unbalance Eccentricity And Permanent Residual Bow
(Texas A&M University. Gas Turbine Laboratories, 1976)
When turbine-generators operating at constant speed require site trim balancing, this is most commonly performed at the synchronous speed using a conventional influence coefficient method. In some cases, the vibration of ...
Axial Vibration Characteristics Of Metal-Flexing Couplings
(Texas A&M University. Gas Turbine Laboratories, 1976)
Increased usage of metal-flexing couplings on high-speed rotating machinery has created awareness of the axial resonant vibration characteristics of this type of coupling. A testing program has been conducted at Rexnord ...
Planning Turbomachinery Overhauls And Documenting The Results
(Texas A&M University. Gas Turbine Laboratories, 1978)
The paper covers the subject of overhauling turbomachines with particular emphasis on practical field procedures and proven concepts. It does not dwell on one type of machine, but multi-stage centrifugal compressors and ...
Plant Lubrication
(Texas A&M University. Gas Turbine Laboratories, 1978)
The correct lubrication of plant equipment is an important factor in sustaining production with reduced equipment outage and lower maintenance costs. A well planned and coordinated lubrication program is a necessary ...
The Role Of Hydraulic Balance In Mechanical Pump Seals
(Texas A&M University. Gas Turbine Laboratories, 1978)
The mechanical seal is the least reliable component in centrifugal pumps. Most seals fail prematurely, i.e., before the seal face wears out. One cause of premature failure is face instability when the seal geometric balance ...
Transient Analyses Of Synchronous Motor Trains
(Texas A&M University. Gas Turbine Laboratories, 1978)
This paper discusses the philosophy of optimum location of torsional critical speeds which will be excited by the transient startup, as well as methods of adjusting the resonant frequencies. Pulsating torque, average torque, ...
Dynamic Characteristics Of Fluid-Film Bearings
(Texas A&M University. Gas Turbine Laboratories, 1977)
The concept of cross-coupling in bearings is introduced and its influence on bearing dynamics is presented. Procedures for obtaining cross-coupled spring and damping coefficients are explained. The special case of pad pitch ...
The Design Of Support Structures For Elevated Centrifugal Machinery
(Texas A&M University. Gas Turbine Laboratories, 1977)
This paper briefly discusses the computer aided analysis and design of elevated turbomachinery support structures. The paper is focused upon structural behavior and is presented from the civil engineer's viewpoint. The ...