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On The Manufacture Of Impellers For Turbocompressors.
(Texas A&M University. Turbomachinery Laboratories, 1986)
The efficiency of compressor impellers, apart from the design, depends on some features linked with their manufacture.
These features are the accuracy of geometry, the surface quality obtained, and the blockages which are ...
Dynamic Analysis Of An 8000 HP Steam Turbine Operating Near Its Second Critical Speed.
(Texas A&M University. Turbomachinery Laboratories, 1986)
A rotordynamics analysis of an 8000 hp steam turbine which drives an ethylene compressor is presented. This machine characteristically exhibited increasing vibration levels with increasing speed, in the upper portion of ...
Vibration Analysis Of Vertical Pumps.
(Texas A&M University. Turbomachinery Laboratories, 1986)
Vibration field data was measured on several large motor-driven vertical cooling water pumps which experienced excessive wear of the impellers, wear rings and seals after a short period of operation. The data indicated ...
Effects Of High Pressure Oil Seals On The Rotordynamics Response Of Centrifugal Compressores.
(Texas A&M University. Turbomachinery Laboratories, 1986)
The influence of high pressure bushing-type oil seals on the rotordynamic characteristics of a centrifugal gas compressor, which compresses hydrogen from 1700 psi to 1800 psi is discussed. The compressor rotor is driven ...
Retrofit Installation Of A Boiler Feed Pump Hydraulic Coupling.
(Texas A&M University. Turbomachinery Laboratories, 1986)
The application of main turbine-generator shaft drive for boiler feed pumps is generally accepted as a method to increase unit efficiency. The use of shaft drive eliminates the power requirement of an auxiliary motor or ...
Development And Implementation Of An Expert System To Diagnose Motor Vibration Problems.
(Texas A&M University. Turbomachinery Laboratories, 1986)
An expert system, TurboExpert, has been developed to diagnose vibration problems dealing with rotating equipment.
Starting with a small inexpensive expert system shell, the program was expanded to include many characteristics ...
Oil Seal Dynamics: Considerations For Analysis Of Centrifugal Compressors.
(Texas A&M University. Turbomachinery Laboratories, 1986)
Oil seals are used in many industrial compressor designs where positive control of the process gas is essential. Consideration of the influence of these seals is necessary for proper design evaluation. The oil seals can ...
Retrofitting A Topping Turbine For Performance And Mechanical Improvement.
(Texas A&M University. Turbomachinery Laboratories, 1986)
Current design technology applied to existing rotating equipment can produce significant energy and maintenance dollar savings. The results achieved when a two-stage topping turbine was retrofitted to a three-stage ...
Balancing Of Integral Gear-Driven Centrifugal Compressors.
(Texas A&M University. Turbomachinery Laboratories, 1986)
Due to the complex dynamic behavior of gear-driven centrifugal turbocompressors, selection of the proper balancing and assembly procedures is essential to obtain a smoothly running rotor. Rigid and flexible balancing ...
Improving Critical Speed Calculations Using Flexible Bearing Support FRF Compliance Data.
(Texas A&M University. Turbomachinery Laboratories, 1986)
The importance of including flexible supports in rotordynamic analyses is discussed. Various methods of including the support in rotordynamic calculations are reviewed. A method is described in which actual compliance ...