24.01.2016 Views

Centrifugal Pumps Design and Application 2nd ed - Val S. Lobanoff, Robert R. Ross (Butterworth-Heinemann, 1992)

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

Stage <strong>Pumps</strong>. Single-Suction Single-Stage Overhung <strong>Pumps</strong>. Multi-Stage <strong>Pumps</strong><br />

Notation. References.<br />

17 Mechanical Seals 354<br />

by James P. Netzel<br />

Theory of Operation. <strong>Design</strong> Fundamentals. Seal Leakage. Seal Wear. Classification<br />

of Seals by Arrangement. Classification of Seals by <strong>Design</strong>. Materials of Construction,<br />

Mating Ring <strong>Design</strong>s. Adaptive Hardware. Upstream Pumping. Mechanicai<br />

Seals for Chemical Service. Mechanical Seals for Refinery Service. Typical <strong>Application</strong>s.<br />

Light Hydrocarbon Service. Mechanical Seal Installation <strong>and</strong> Troubleshooting<br />

References.<br />

48 Vibration <strong>and</strong> Noise in <strong>Pumps</strong> .............................. 422<br />

by Fr<strong>ed</strong> R. Szenasi<br />

Introduction. Sources of Pump Noise. Mechanical Noise Sources. Liquid Noise<br />

Sources. Causes of Vibrations. Installation/Maintenance Effects. <strong>Application</strong>. Hydraulic<br />

Effects. Half-Wave Resonance (Open-Open <strong>and</strong> Clos<strong>ed</strong>-Clos<strong>ed</strong>). Quarter-Wave<br />

Resonance (Open-Clos<strong>ed</strong>). <strong>Design</strong>/Manufacturing. Rotordynamic Analysis. Lateral<br />

Critical Spe<strong>ed</strong> Analysis. Seal Effects. Response to Unbalance. Acceptable Unbalance<br />

Levels. Allowable Vibration Criteria. Rotor Stability Analyses. Torsional Critical Spe<strong>ed</strong><br />

Analysis. Variable Spe<strong>ed</strong> Drives. Diagnosis of Pump Vibration Problems. Measure<br />

ment Techniques. Impact Tests. Troubleshooting, Impact Tests. Appendix. Acoustic<br />

Velocity of Liquids. References.<br />

Part4: Extending Pump Life 495<br />

19 Alignment 497<br />

by Malcolm G. Murray, Jr.<br />

Definitions. Why Bother With Precise Alignment? Causes of Misalignment. Management<br />

<strong>and</strong> Human Factors. Physical Factors. Pre-Alignment Steps. Methods of Primary<br />

Alignment Measurement. Methods of Calculating Alignment Movements. Jig<br />

Posts. Numerical Examples. Thermal Growth. References.<br />

20 Rolling Element Bearings <strong>and</strong> Lubrication 524<br />

by Heinz P. Bloch<br />

Friction Torque. Function of the Lubricant. Oil Versus Grease. Advantages. Disadvantages.<br />

Oil Characteristics. Viscosity. Viscosity Index. Pour Point. Flash <strong>and</strong> Fire Point.<br />

ix

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!