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Now showing items 11-20 of 268
Design Of Pump Shaft Trains Having Variable-Speed Electric Motors
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1986)
With converter-fed variable speed electric motors, pulsating torques inevitably occur in the air gap and can cause torsional oscillation in the whole shaft line. The origin and behavior of these torques and how to calculate ...
Development Of An Advanced Gas Turbine Driven High-Speed Centrifugal Pump For Injection Services
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1986)
The high-speed centrifugal pump dealt with herein has been designed principally for applications in high-pressure injection for enhanced oil recovery. To assure the high output flexibility necessary for this service, the ...
Gas-Liquid Flow Through Centrifugal Pumps - Correlation Of Data
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1986)
The head capacity characteristics of three different submersible centrifugal pumps were correlated as a function of the gas-to-liquid ratio and pressure at the pump suction. The experimental data were from two independent ...
A Powerful Application And Troubleshooting Method For Mechanical Seals
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1985)
Understanding the possible thermodynamic paths that a sealed fluid can follow as it goes from stuffingbox conditions, across the seal faces, and then exits to the atmosphere is a basic, but often overlooked, aspect of seal ...
Screw Pumps Of One, Two And Three Screw Design
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1985)
Some fluid solutions utilized throughout the world have proven to be difficult to move, using “conventional” pumps. These included gas-liquid, Newtonian and non-Newtonian fluids. The screw pump, with its inherent slow ...
Critical Speed Analysis Of An Eight-Stage Centrifugal Pump
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1985)
A critical speed and unbalance response analysis of an eight-stage centrifugal pump was performed, considering the variation of stiffness and damping coefficients with speed for both the oil firm bearings and the fluid ...
Experimental Study Of The Influence Of Backflow Control On Pump Hydraulic-Mechanical Interaction
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1985)
A series of right-angle pump intakes, incorporating minimum axial depths and decelerating flows, has been experimentally evaluated using an air flow test procedure. Performance was measured, internal flow fields observed ...
Table of Contents for the Proceedings of the 2nd International Pump Symposium
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1985)
Modern Cavitation Criteria For Centrifugal Pumps
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1985)
It is well known that the performance of a rotordynamic pump deteriorates when the suction pressure is reduced below a certain value. The suction pressure is usually qualified in relation to the vapor pressure at the suction ...
Flow Patterns Causing Instabilities In The Performance Curves Of Centrifugal Pumps With Vaned Diffusers
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1985)
It is well known that backflow regimes at the impeller inlet can lead to performance instabilities for centrifugal pumps at flowrates smaller than about 65 percent of the impeller inlet design flowrate. Performance curve ...