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Experimental Investigations In Respect To The Relevance Of Suction Specific Speed For The Performance And Reliability Of Centrifugal Pumps
(Texas A&M University. Turbomachinery Laboratories, 1996)
Recently, several recommendations have been proclaimed concerning limitations of the maximums suction specific speeds (n85) of centrifugal pumps. These recommendations result from statistical evaluations of pump failures ...
Development Of A Noncontacting Seal For Gas/Liquid Applications Using Wavy Face Technology
(Texas A&M University. Turbomachinery Laboratories, 1996)
A seal has been developed and tested that incorporates a circumferential wave pattern with a sealing dam formed on a SiC face, using a proprietary process. When run against a flat carbon face, laboratory tests show that ...
Determination Of NPSHR For Reciprocating Positive Displacement Pumps - A New Approach
(Texas A&M University. Turbomachinery Laboratories, 1996)
NPSHR is a significant pump characteristic; it is often taken as a measure of minimum suction head needed to operate a pump satisfactorily. Hydraulic institute, among others, specifies a measurement of procedure for NPSHR, ...
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, ...
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 ...
The Use Of Basic Hydraulics To Solve Field Problems: Three Cases
(Texas A&M University. Turbomachinery Laboratories, 1996)
Single stage double suction horizontally split pumps are widely used in cooling tower water applications. Their operational record varies depending on installation (sump and piping detail), mode of operation, speed, specific ...
Slurry Pipeline Design For Operation With Centrifugal Pumps
(Texas A&M University. Turbomachinery Laboratories, 1996)
The following covers what the writer sees as the main considerations involved in the design of a slurry pipeline. It is broken down into sections. This section is concerned mainly with the slurry and design of the hydraulics ...
Design And Testing Of Seals To Meet API 682 Requirements
(Texas A&M University. Turbomachinery Laboratories, 1996)
In recent years, manufacturers of mechanical seals have been faced with meeting more stringent leakage requirements along with reliability and extended MTBPM. Regulations by Environmental Protection Agency and standards ...