Pump Primer 1 $100 - 8 Hours - Technical Learning College

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Types of Pumps The family of pumps comprises a large number of types based on application and capabilities. The two major groups of pumps are dynamic and positive displacement. Dynamic Pumps (Centrifugal Pump) Centrifugal pumps are classified into three general categories: Radial flow—a centrifugal pump in which the pressure is developed wholly by centrifugal force. Mixed flow—a centrifugal pump in which the pressure is developed partly by centrifugal force and partly by the lift of the vanes of the impeller on the liquid. Axial flow—a centrifugal pump in which the pressure is developed by the propelling or lifting action of the vanes of the impeller on the liquid. A centrifugal pump has two main components: I. A rotating component comprised of an impeller and a shaft II. A stationary component comprised of a casing, casing cover, and bearings. Pump Primer I Course © 12/1/2012 (866) 557-1746 www.ABCTLC.com 50
General Pumping Fundamentals Here are the important points to consider about suction piping when the liquid being pumped is below the level of the pump: First, suction lift is when the level of water to be pumped is below the centerline of the pump. Sometimes suction lift is also referred to as ‘negative suction head’. The ability of the pump to lift water is the result of a partial vacuum created at the center of the pump. This works similar to sucking soda from a straw. As you gently suck on a straw, you are creating a vacuum or a pressure differential. Less pressure is exerted on the liquid inside the straw, so that the greater pressure is exerted on the liquid around the outside of the straw, causing the liquid in the straw to move up. By sucking on the straw, this allows atmospheric pressure to move the liquid. Look at the diagram illustrated as “1”. The foot valve is located at the end of the suction pipe of a pump. It opens to allow water to enter the suction side, but closes to prevent water from passing back out of the bottom end. The suction side of pipe should be one diameter larger than the pump inlet. The required eccentric reducer should be turned so that the top is flat and the bottom tapered. Notice in illustration “2” that the liquid is above the level of the pump. Sometimes this is referred to as ‘flooded suction’ or ‘suction head’ situations. Points to Note are: If an elbow and bell are used, they should be at least one pipe diameter from the tank bottom and side. This type of suction piping must have a gate valve which can be used to prevent the reverse flow when the pump has to be removed. In the illustrations you can see in both cases the discharge head is from the centerline of the pump to the level of the discharge water. The total head is the difference between the two liquid levels. Pump Primer I Course © 12/1/2012 (866) 557-1746 www.ABCTLC.com 51
Page 1 and 2: PUMP PRIMER 1 CONTINUING EDUCATION
Page 3 and 4: Important Information about this Ma
Page 5 and 6: Technical Learning College’s Scop
Page 7 and 8: Course Description Pump Primer I Tr
Page 9 and 10: Table of Contents Common Hydraulic
Page 11 and 12: Pump Definitions (Larger Glossary i
Page 13 and 14: Archimedes Pump Primer I Course ©
Page 15 and 16: On the Sphere and Cylinder On Spira
Page 17 and 18: Hydraulic Principles Section Defini
Page 19 and 20: Barometric Loop The barometric loop
Page 21 and 22: On earth, fluids are also subject t
Page 23 and 24: Standard Atmospheric Pressure This
Page 25 and 26: Liquids at Rest In studying fluids
Page 27 and 28: Development of Hydraulics Although
Page 29 and 30: To see what happens in this case, w
Page 31 and 32: The simplest pump is the syringe, f
Page 33 and 34: Small amounts of gas are trapped at
Page 35 and 36: Hydrostatic Paradox What we have he
Page 37 and 38: Large sounding balloons were used t
Page 39 and 40: Pascal’s Law The foundation of mo
Page 41 and 42: Bernoulli’s principle also tells
Page 43 and 44: Understanding the Venturi It is not
Page 45 and 46: Pump Introduction Pumps are used to
Page 47 and 48: Complicated Pumps More complicated
Page 49: • Operating temperature. Pump mat
Page 53 and 54: Positive Displacement Pumps A Posit
Page 55 and 56: Pump Specifications Pumps are commo
Page 57 and 58: Pump Efficiency Pump efficiency is
Page 59 and 60: Here the flow is multiplied by the
Page 61 and 62: Understanding Your Pumping System R
Page 63 and 64: Understanding Pump Viscosity When t
Page 65 and 66: The Darcy friction factor is four t
Page 67 and 68: Pipe Runs A piping system is compos
Page 69 and 70: Understanding the Basic Water Pump
Page 71 and 72: Types of Water Pumps The most commo
Page 73 and 74: Vertical Turbine Pump Primer I Cour
Page 75 and 76: Self-priming Pump A pump that does
Page 77 and 78: It is not easy to understand why lo
Page 79 and 80: Progressing Cavity Pump In this typ
Page 81 and 82: In operation, progressive cavity pu
Page 83 and 84: Screw or Auger Pump The Archimedes'
Page 85 and 86: Reciprocating Pumps Typical recipro
Page 87 and 88: can handle highly viscous liquids.
Page 89 and 90: Cavitation is what net positive suc
Page 91 and 92: A chart or some type of publication
Page 93 and 94: Rope Pumps Devised in China as chai
Page 95 and 96: Wheel The function of the rope pump
Page 97 and 98: Impulse Pumps Impulse pumps use pre
Page 99 and 100: These types of pumps have a number
Page 101 and 102:
Both systems involve storing energy
Page 103 and 104:
Wind Mills In the past, windmills h
Page 105 and 106:
Understanding Progressing Cavity Pu
Page 107 and 108:
Understanding Pump NPSH NPSH is an
Page 109 and 110:
The reason for this requirement Whe
Page 111 and 112:
More on Positive Displacement Pumps
Page 113 and 114:
Reciprocating Positive Displacement
Page 115 and 116:
Centrifugal pumps can further be cl
Page 117 and 118:
Darcy-Weisbach Formula Flow of flui
Page 119 and 120:
In 1944, Lewis Ferry Moody plotted
Page 121 and 122:
Steam Pumps Steam pumps have been f
Page 123 and 124:
Sling Pump A sling pump is powered
Page 125 and 126:
Valveless Pumps Valveless pumping a
Page 127 and 128:
Positive displacement rotary pumps
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Glossary A Absolute Pressure: The p
Page 131 and 132:
For steady state incompressible flo
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1 lb f /in 2 (psi) = 6.894 10 3 N/m
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Cavitation Continued: Increasing th
Page 137 and 138:
Coanda Effect: The tendency of a st
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D Darcy-Weisbach Equation: The pres
Page 141 and 142:
Drag Coefficient: Used to express t
Page 143 and 144:
Energy: The ability to do work. Ene
Page 145 and 146:
ds = c v ln(T 2 / T 1 ) + R ln(ρ 1
Page 147 and 148:
p in + ρ v in 2 / 2 + γ h in + ρ
Page 149 and 150:
Pressure Static Pressure and Press
Page 151 and 152:
Hazen-Williams Factor: Hazen-Willia
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Since the Stoke is an unpractical l
Page 155 and 156:
When you compress something, you ta
Page 157 and 158:
O Oxidizing: The process of breakin
Page 159 and 160:
Absolute Pressure The absolute pres
Page 161 and 162:
Saybolt Universal Seconds (or SUS,
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How pressure changes with elevation
Page 165 and 166:
Surface tension is typically measur
Page 167 and 168:
Vapor Pressure: For a particular su
Page 169 and 170:
frequently measured using a device
Page 171 and 172:
Appendixes and Charts Density of Co
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Glycerol 25 1126 Heptane 25 676 Hex
Page 175 and 176:
Dynamic or Absolute Viscosity Units
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6 8 10 150 9.5 1.3 2.4 2.9 3.1 6.2
Page 179 and 180:
Material Hazen-Williams Coefficient
Page 181 and 182:
Thermal Properties of Water Tempera
Page 183 and 184:
Viscosity Converting Chart The visc
Page 185 and 186:
Various Flow Section Channels and t
Page 187 and 188:
Heads at different velocities can b
Page 189 and 190:
Reynolds Number Turbulent or lamina
Page 191 and 192:
Water - Dynamic and Kinematic Visco
Page 193 and 194:
References "A High-Quality Digital
Page 195 and 196:
Patrick, Dale R; Fardo, Stephen W.,
Page 197 and 198:
Math Conversion Factors and Practic
Page 199 and 200:
Run (ft) Run (ft) POPULATION EQUIVA
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