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Now showing items 1171-1180 of 1233
The Use Of Wavy Face Technology In Various Gas Seal Applications
(Texas A&M University. Turbomachinery Laboratories, 1998)
Wavy face technology in mechanical face seals is the use of circumferential waves manufactured into a seal face. This unique wavy shape is bidirectional, can be used in liquids, gases or combination, and incorporates a ...
An Innovative Upgrade And Performance Rerate Of Large, High Speed, High Temperature, Multistage Barrel Pumps
(Texas A&M University. Turbomachinery Laboratories, 1998)
High pressure hydrocracker charge is one of the most arduous services for multistage centrifugal pumps in the refining industry. Future plant capacity requirements of the hydrocracker unit at a United Kingdom site required ...
Sleeve Type Bearings And Their Lubrication Systems In Vertical Turbine Pumps, Mixed Flow And Axial Flow Pumps
(Texas A&M University. Turbomachinery Laboratories, 1998)
Shafting and different sleeve type bearing systems, and the associated lubrication arrangements to support these systems in vertical diffuser type pumps, are discussed.
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. ...
Analyzing Unacceptable Seal Performance
(Texas A&M University. Turbomachinery Laboratories, 1998)
For many years, acceptable seal performance was defined as “minimal or no visible leakage.” During the last decade, these definitions have changed immensely as government and industry have combined in a massive effort to ...
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 ...
Rotating Equipment Pump Reliability Upgrading Project
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1994)
In 1988, a general performance assessment was undertaken at Shell UK’s Stanlow Manufacturing Complex to review its competitive position in the market place. The review concluded there was a high level of maintenance ...
Continuous Monitoring Of Sealless Pumps - The Next Step
(Texas A&M University. Turbomachinery Laboratories, 1998)
All centrifugal sealless pumps, both canned motor and magnetic drive, should be monitored to determine mechanical condition. In sealless pumps, the pumped fluid is used as the cooling and lubricating medium for the pump ...
Application Guidelines For Pumping Liquids That Have A Large Dissolved Gas Content
(Texas A&M University. Turbomachinery Laboratories, 1998)
A case history is presented pertaining to five (four operating and one spare), 150 hp sealless pumps operating in parallel in a closed loop-65° chilled liquid system. The pumping system is designed to use a liquid refrigerant ...
Understand Progressing Cavity Pumps Characteristics And A Void Abrasive Wear
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1995)
Progressing cavity pumps develop their pumping action by the meshing of the external threads of the elastomer stator and the internal threads of the metallic rotor. The special geometry, as characterized by the different ...