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Now showing items 91-100 of 176
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 ...
Design And Testing Of Dual Seal Series Arrangements For Pressurized Barrier Fluid
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1995)
Dual mechanical seals are operated on pressurized barrier fluid systems when the pump product properties do not support reliable single seal operation. This provides added protection against environmental release of the ...
Diaphragm Development Trends For Safe Leak Free Reciprocating Process Pumps
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1995)
The application of diaphragm pumps for metering and conveying the fluids are continuously expanding because they provide zero-leakage, can run dry, have superior efficiency, offer high reliability, maximize safety and ...
Dual Gas Sealing Technology For Pump
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1995)
Dual gas seals are gaining acceptance by industrial users as a product that offers advantages over conventional liquid lubricated seals. These advantages are measured in terms of controlling emissions, minimizing product ...