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Justifying The Reinstallation And Upgrading Of Problem ANSI Pumps At An Operating Chemical Plant
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1995)
Many facilities do not obtain the expected life out of ANSI and other centrifugal pumps, seals, and bearings that need to be obtained to be competitive in today’s market place. The analysis of this situation leads to two ...
Modern Manufacturing Of Advanced Impeller And Diffuser Vane Profiles
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1995)
Both fluid dynamics and manufacturing technology have seen rapid progress over the last few years. Vane profiles need no longer be developed in cavitation demonstration experiments, but can be optimized by computerized ...
Effect Of Mechanical Unbalance On Vibrations, Forces And Reliability Of A Single-Stage Centrifugal Pump
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1995)
The effect of rotor mechanical unbalance on pump vibrations was tested for a typical ANSI pump. It was found that significant damping of vibrations occurs at actual (wet) operations as compared to dry run. Rotor forces and ...
Experimental Evaluation Of High Energy Pump Improvements Including Effects Of Upstream Piping
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1995)
The suction-impeller (single-suction) of a 33,500hp, four-stage barrel pump used in boiler feed service at a fossil fuel steam plant experienced operating life ranging from 6.0 to 19 months. Cavitation erosion on the suction ...
Magnetic Bearings As An Impeller Force Measurement Technique
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1995)
The technique of measuring steady loads on centrifugal pump impellers via magnetic bearings is demonstrated and shown to be reliable way of clarifying loads, which have been traditionally difficult to determine both ...
Design And Implementation Of A Mechanical Seal Improvement Program At An Oil Refinery
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1995)
A mechanical seal improvement program was initiated at a major oil refinery. The program was intended to improve seal reliability, reduce emissions, improve safety, and reduce costs. A partnership agreement was reached ...
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 ...
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 ...
Dry Running Bellows Type Tandem Seals For VOC Services
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1995)
Dry running bellows seal technology, where the secondary (outer) seal operates in a dry condition, was originally developed in the UK and Europe for protection against primary seal failure. Over the past three years, it ...
Dry Running Tests Utilizing Silicon Carbide Bearings And Polymer Lubricating Strips With Conductive And Nonconductive Containment Shells In An ANSI Magnetic Drive Pump
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1995)
As users continue to turn to sealless pumps to solve their leakage (emission) problems they are demanding robust designs that are more tolerant of system upsets and have the ability to survive short periods of dry running. ...