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Now showing items 61-70 of 263
Centrifugal Pump Vibration Caused By Supersynchronous Shaft Instability
(Texas A&M University. Turbomachinery Laboratories, 1996)
Many centrifugal pump vibration problems are due to synchronous phenomena such as vane-pass frequency energy and running speed energy. To address such problems, guidelines have been developed to assist with their identification ...
ASME B73.1m Pump Reliability Program Formation - A Data Based Approach
(Texas A&M University. Turbomachinery Laboratories, 1996)
Data are being used to determine business decisions in this day of competitive business. In years past, many business decisions have been made without the data to support them. Today, with the use of new computer programs, ...
Inside The Sealless Pump
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1992)
Sealless pumps are now specified as the preferred type for handling of toxic, hazardous, and environment threatening chemicals. Magnetically driven sealless pumps have emerged as the first choice, due to their simplicity ...
Mechanical Seal Chamber Design For Improved Performance
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1992)
The influence of pump chamber design to the environment, and mechanical seal reliability has been the been the subject of a major collaborative United Kingdom study. The key mechanisms involved in controlling the flow ...
Pump Vibrations
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1992)
The reliability and failure mechanisms of high energy pumps used in the utilities industry and the high suction specific speed pumps used in the hydrocarbon processing industry show surprising parallels as to root causes. ...
Affordable Quasi Three-Dimensional Inverse Design Method For Pump Impellers
(Turbomachinery Laboratories, Department of Mechanical Engineering, Texas A&M University, 1992)
Traditionally, the hydraulic design of impellers has been more of an empirical art than a well-defined engineering science. Because of the empiricism, new designs have been disappointing at times. Discussed here is a “new” ...
Development And Field Test Results Of High Performance Seals For An NGL Injection Pump
(Texas A&M University. Turbomachinery Laboratories, 1997)
Improvement in the efficiency of enhanced oil recovery techniques at the Kuparak, Alaska, oil field required replacement of reciprocating pump with a larger capacity centrifugal pump. During the specification of a high ...
The Suction Performance Of Centrifugal Pumps Possibilities And Limits Of Improvements
(Texas A&M University. Turbomachinery Laboratories, 1996)
Following a brief description of the general suction performance of pumps and starting from an impeller designed for standard requirements, it will be discussed by which modifications and up to which limit the suction ...
The Control Of Variable Speed Pumps In Parallel Operation
(Texas A&M University. Turbomachinery Laboratories, 1996)
The features are discussed of a PLC based control scheme that was developed for a multipump pumping station to be used to supply oil field produced liquids (crude oil and associated water) from tanks through a dehydration ...
Two-Phase Flow Performance Of A Heat Transport Pump
(Texas A&M University. Turbomachinery Laboratories, 1997)
Heat transport pumps in Canadian deuterium uranium reactor circulate coolant to remove fuel decay heat from the reactor core during normal and accident conditions. A loss-of-coolant-accident is one condition where heat ...