Record:   Prev Next
Author Bachus, Larry
Title Know and Understand Centrifugal Pumps
Imprint Oxford : Elsevier Science & Technology, 2003
©2003
book jacket
Edition 1st ed
Descript 1 online resource (265 pages)
text txt rdacontent
computer c rdamedia
online resource cr rdacarrier
Note Cover -- Contents -- Prologue -- About the Authors -- Chapter 1. Basic Pump Principles -- Introduction -- How do pumps work? -- Pressure measurement -- Atmospheric pressure (ATM) -- Absolute pressure (psia) -- Gauge pressure (psig) -- Vacuum -- Pump head -- Specific gravity -- Pressure measurement -- Pressures inside the pump -- Chapter 2. NPSH, Net Positive Suction Head -- Introduction -- Definition of NPSHr (required) -- Definition NPSHa (available) -- Chapter 3. Cavitation -- Introduction -- Vapor pressure -- Cavitation -- The effects of vapor pressure on pump performance -- Cavitation: A practical discussion -- Review for preventing cavitation -- Cavitation review -- Do something about cavitation! -- Chapter 4. The Affinity Laws -- Introduction -- The Laws -- The Affinity Laws and the impeller diameter -- What's the practical application of these laws? -- Chapter 5. Useful Work and Pump Efficiency -- Useful work from a pump -- Flow determination -- Pump efficiency -- Factors that affect the efficiency -- Calculating pump efficiency -- Chapter 6. Pump Classification -- Introduction -- Positive displacement pumps -- Centrifugal pumps -- Conceptual difference -- Centrifugal volute pumps -- Types of centrifugal pumps -- Overhung impeller -- Impeller between the bearings -- Turbine pumps -- Specific duty pumps -- The typical ANSI pump -- API (American Petroleum Institute) pumps -- Vertical turbine pumps -- Non-metallic pumps -- Magnetic drive pumps -- Canned motor pumps -- Pump impellers -- Turbine impellers -- Conventional impellers -- Suction specific speed, Nss -- Open impellers -- Semi open impeller -- Totally enclosed impeller -- Wear bands -- Specific speed, Ns -- Chapter 7. Understanding Pump Curves -- Pump performance curves -- History -- Head versus pressure -- H-Q -- Pump efficiency -- The energy (BHp) curve
The pump's minimum requirements (NPSH) -- Special design pumps -- Family curves -- Chapter 8. The System Curve -- The system controls the pump -- The elements of the Total Dynamic Head (TDH) -- Determining the Hs -- Determining the Hp -- Calculating the Hf and Hv -- The dynamic system -- Variable elevations -- The happy zone -- Dynamic pressures -- Variable resistances -- Short term resistance changes -- Long term resistance changes -- Pumps in parallel and pumps in series -- Pumps in parallel -- Three tips -- Pumps running in series -- Combined parallel and series pump operation -- Chapter 9. Shaft Deflection -- Introduction -- Operation, design and maintenance -- Signs of shaft deflection -- Interpreting the evidence -- The sweet zone -- The dual volute pump -- Chapter 10. Pump and Motor Alignment -- Introduction -- Types of misalignment -- Alignment techniques -- Equipment alignment sequence -- Coupling alignment -- Chapter 11. Bearings -- Introduction -- Bearing lubrication -- Bearing failure -- Bearing maintenance -- Bearing seals -- Chapter 12. Pump Shaft Packing -- History -- Vegetable fibers -- Reciprocating action -- Packing -- Rotary action -- Synthetic fibers -- Compression packing -- The lantern ring -- The packing lubricant -- Stages in the life of packing -- Chapter 13. Mechanical Seals -- Pump packing -- History -- The mechanical seal -- The single, unbalanced, inside mounted mechanical seal -- The single, outside-mounted, unbalanced seal -- The single, balanced, internal mechanical seal -- The single, balanced, external mechanical seal -- Advantages of o-rings -- The balance effect -- Advantages of balance -- Balance explained by math -- Cartridge mechanical seals -- Double seals -- The tandem dual seal -- The back-to-back double seal -- The face-to-face dual seal -- Support systems for dual seals -- The thermal convection tank
The turbo tank -- The pumping unit -- Chapter 14. Failure Analysis of Mechanical Seals -- Causes of premature seal failure -- O-ring (the elastomer) failure -- The elastomer sticks to the shaft -- The springs clog and jam -- The shaft frets under the shaft seal -- Incorrect installation dimension -- Environmental controls for difficult sealing applications -- Difficult pumping applications for mechanical seals -- Environmental controls -- Proper pump repair alignment methods -- Chapter 15. Common Sense Failure Analysis -- Pump maintenance files -- Failure analysis on centrifugal pumps -- Why is this pump in the shop? -- Chapter 16. Avoiding Wear in Centrifugal Pumps -- Introduction -- Erosion -- Corrosion -- Wear rings -- Fluid velocity accelerates wear -- Turbulence -- Throttling -- Chapter 17. Pump Piping -- Introduction -- Piping design to drain tanks and sumps -- The Submergence Laws -- Index
Pumps are commonly encountered in industry and are essential to the smooth running of many industrial complexes. Mechanical engineers entering industry often have little practical experience of pumps and their problems, and need to build up an understanding of the design, operation and appropriate use of pumps, plus how to diagnose faults and put them right. This book tackles all these aspects in a readable manner, drawing on the authors' long experience of lecturing and writing on centrifugal pumps for industrial audiences
Description based on publisher supplied metadata and other sources
Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, 2020. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
Link Print version: Bachus, Larry Know and Understand Centrifugal Pumps Oxford : Elsevier Science & Technology,c2003 9781856174091
Subject Centrifugal pumps
Electronic books
Alt Author Custodio, Angel
Custodio, A
Record:   Prev Next