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Now showing items 251-260 of 384
Vibration Problems With An Electric Motor For A Centrifugal Pump Installation
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1993)
A case history is presented in which vibration related problems with two pole electric motors have delayed acceptance of the complete pump packages by the end user. Noncompliance with contract specifications led to a major ...
The Shortcomings Of Using Pump Suction Specific Speed Alone To Avoid Suction Recirculation Problems
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1993)
There is a mistaken belief in the pump industry (fueled by many publications) that the best way to avoid suction recirculation problems is to design and/or apply only pumps having low suction specific speed values (below ...
Table of Contents for the Proceedings of the 10th International Pump Users Symposium
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1993)
Positive Displacement Pumps - Performance And Application
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1994)
The operating principles of positive displacement (PD) pumps differ from centrifugal pumps. This basic difference is evident in the pump’s response to a system’s head/flow curve. Several pump applications are presented to ...
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 ...
Oil Mist Lubrication For The Petrochemical Industry
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1994)
Oil Mist lubrication has been shown to be a very effective method for reducing maintenance costs by minimizing lubrication related bearing failures. What oil mist is, how it works, and typical results from its application ...
An Integral Balance Piston For Centrifugal Pump Impellers
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1991)
Axial thrust balancing of pressure forces in centrifugal pumps has long been a design challenge for pump engineers. This becomes particularly important in sealless pumps, due to their lack of thrust bearing capacity, and ...
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 ...
Single Plane Balancing
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1991)
Balancing rotating equipment is a form of correction for things that were either not uniform in material sciences or in assembly of components on a rotating shaft. The single plane balancing procedures are addressed, wherein ...
The Effects Of Valve Dynamics On Reciprocating Pump Reliability
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1995)
Compared to leading edge technologies such as high speed turbomachinery, reciprocating pumps may appear to be a simple technology: A reciprocating plunger causes liquid to be drawn from a low pressure manifold through the ...