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Computational Fluid Dynamical Analysis Of Complex Internal Flows In Centrifugal Pumps
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1994)
A commercial computational fluid dynamics (CFD) computer code was employed to compute the flow field from 105 percent down to 21 percent of the 4525 gpm BEP flowrate of a 1785 rpm, 1500 specific speed impeller of 14,000 ...
The Development Of Low Friction, Low Leakage Mechanical Seals Using Laser Technology
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1994)
An ideal mechanical seal would operate reliably, for long periods, without wear, with permanently low friction and extremely low leakage. Real mechanical seals often do wear and leak appreciably, however, particularly when ...
Analysis And Testing Of Alternative Bearings Materials For Applications In Sealless Pumps
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1994)
As the usage of sealless pumps increases, so do the demands for journal bearing materials that can operate successfully through the thermal upsets that can take place in these pumps. Material specification literature is ...
The Role Of Off-Design Pump Operation On Mechanical Seal Performance
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1994)
Field experience indicates that a high percentage of centrifugal pumps in industrial applications are not operated at their best efficiency point as related to product flow. Dry running, gas ingestion, vibration, cavitation, ...
CMA/STLE Pump Seal Mass Emissions Study
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1994)
The Chemical Manufacturers Association and the Society of Tribologists and Lubrication Engineers conducted a study of the leak rates from pumps equipped with mechanical seals. The resulting analysis indicates that attention ...
Design And Development Of Gas Lubricated Seals For Pumps
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1994)
Gas lubricated double seals are becoming more common in industry for pump applications where product emission, product contamination, and operating costs are a concern. Technology proven on large gas compressors is not ...
Improvement Of A High Temperature Bellows Seal
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1994)
An Inconel 718 metal bellows seal has been developed to meet the demands for high temperature applications in corrosive media such as high Sulphur bearing crude oil. Finite element analysis was used to develop concepts ...
Thermal Test Analysis Of Bearing Frame Inline Pumps On High Temperature Service
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1994)
Testing of an API Standard 610[1] bearing frame inline pump at pumpage temperatures up to 650 degrees F is presented. The thermal response throughout the pump, and specifically in the bearing frame area, is quantified. ...
Monitoring Sealless Pumps For Metal-To-Metal Contact Of The Internal Rotor
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1994)
Monitoring vibration as a predictive maintenance tool will not consistently prevent catastrophic damage and/or fluid release from sealess pumps. When vibration readings are taken periodically, a pump may be destroyed between ...
Reliability Improvements To A High Pressure, High Temperature, Thirteen Stage Charge Pump
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1994)
Reliability of a high pressure charge pump has been a problem for over 20 years. Unplanned unit outages and sometimes fires accompany pump failures. This paper details the joint effort of the OEM and the user to resolve ...