Practical Introduction to Pumping Technology. A basic guide by Uno Wahren (Auth.)

By Uno Wahren (Auth.)

Content material:
- Contents

, Pages v-viii
Chapter 1 - Parameters

, Pages 1-8
Chapter 2 - Pump Calculations

, Pages 9-18
Chapter three - Required facts for Specifying Pumps

, Pages 19-20
Chapter four - Pump Types

, Pages 21-41
Chapter five - Specifications

, Pages 42-44
Chapter 6 - Pump Curves

, Pages 45-54
Chapter 7 - results of Viscosity on Pump Performance

, Pages 55-60
Chapter eight - Vibration

, Pages 61-82
Chapter nine - internet confident Suction Head (NPSH)

, Pages 66-73
Chapter 10 - Pump Shaft Sealing

, Pages 74-82
Chapter eleven - Pump Bearings

, Pages 83-91
Chapter 12 - Metallurgy

, Pages 92-99
Chapter thirteen - Pump Drivers

, Pages 100-113
Chapter 14 - Gears

, Pages 114-120
Chapter 15 - Couplings

, Pages 121-127
Chapter sixteen - Pump Controls

, Pages 128-136
Chapter 17 - Instrumentation

, Pages 137-139
Chapter 18 - Documentation

, Pages 140-145
Chapter 19 - Inspection and Testing

, Pages 142-145
Chapter 20 - set up and Operation

, Pages 146-150
Chapter 21 - Troubleshooting

, Pages 151-153
Appendix 1 - pattern Pump Specifications

, Pages 154-159
Appendix 2 - Centrifugal Pump information Sheet

, Page 160
Appendix three - inner Combustion Engine info Sheet

, Page 161
Appendix four - electrical Motor facts Sheet

, Page 162
Appendix five - Centrifugal Pump Package

, Page 163
Appendix 6 - greatest workable Suction Lifts at quite a few Altitudes

, Page 164
Appendix 7 - prompt checklist of Vendors

, Pages 165-174
Appendix eight - API-610 Mechanical Seal category Code

, Page 175
References

, Page 176
Index

, Pages 177-182

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Additional resources for Practical Introduction to Pumping Technology. A basic guide to pumps—from specification to installation and operation

Example text

21), a helical screw rotates in a stationary trough. This is the oldest pump still in use. The ancient Egyptians used it to lift water from the Nile to irrigate surrounding fields. More recently, this pump is enjoying a renaissance. This specialty pump is used in applications requiting large flows and low heads. In its original form, the inefficient pump had a lot of backflow. In a modem improvement, a cylinder contains conically pitched helical flights, welded to the cylinder's walls. The whole assembly rotates.

I 2 I I I I I I 3 ~. 5 6 "7 8 I 9 I I 1000 FLOW IN I I I I 2 3 4 5 ' I 6 I I "7 8 I g I 2000 I I I I I 2 3 41. 12, the two booster pumps are delivering 2,000 gpm into the suction of the main pump, thus boosting the NPSHA of that pump to 49 ft. 13). The sizes of the cylinders or other types of cavities as well as the rpm of the crankcase govern the pumps' capacities. Throttling the discharge is not recommended. A little throttling does not reduce the capacity much. Throttling the discharge enough to change the capacity significantly will increase the discharge pressure until the pump pressure may exceed the design pressure.

Internal G e a r P u m p s . 15). When the gears rotate, they produce pockets into which the product moves at higher and higher pressures until forced out at the discharge end. An internal gear pump costs more money than an external one but can handle more viscous fluids. Pressures and flows are comparable between the two. Sliding Vane Pumps. 17). The centrifugal force of the rotor causes the stiff vanes to slide in and out of the slots in the rotor. The vanes glide across the casing, forming a seal.

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