Pumps Flashcards
is an equipment used to transfer fluid from a region of low pressure to another region at same or higher pressure
Pump
Pump–A device or machine that compresses and/or transports fluids usually by _________
pressure or suction
Categories of Pump Classification
- As to Operating Principle
- As to Casing Design
- As to Mounting
- As to Connection with Driver
(Motor or Engine) - As to Construction Materials
Pumps under Centrifugal type
a. Radial Flow
b. Axial Flow
c. Mixed Flow
Pumps under Positive Displacement Type
a. Reciprocating Piston
b. Reciprocating Plunger
c. Rotary Blades
d. Rotary Roots
e. Screw Types
f. Gear
Pumps under Turbine Type
a. Axial Flow
b. Mixed Flow
Classification of Pumps as to Casing Design:
- Horizontal Split Case
- Vertical Split Case
- Submerged
Classification of Pumps as to Mounting
- Base Mounted
- In –line Mounted
Classification of Pumps as to Connection with Driver:
- Flexible Coupled
- Case Coupled
- Belt Driven
Classification of Pump as to Construction Materials
- Cast Iron
- Stainless Steel
- Bronze
- Concrete
- Plastic
- Fiberglass
A vane or impeller rotate inside a close-fitting case, draw in liquid at the center and, by virtue of centrifugal force, throw liquid out through an opening in the periphery of the case
Centrifugal Pump
The higher the speed of rotation, the greater the ___________ that can be pumped or the greater the ___________- that can be generated.
Volume; Head
The recommended suction lift for centrifugal is___meters and should not exceed __ meters
4.5; 6
is basically a centrifugal pump complete with electric motors which are positioned underwater in a suitable bored hole that delivers the water to the surface
Submersible Pump
indicates the size of the pump to be installed.
Well Diameter
indicates the Static Water Level, the vertical distance from the surface (Datum Line) to the water level when no wateris being pump
Well Depth
the vertical distance from the Datum Line to the water level when specified capacity is being pumped.
Pumping water level
the vertical distance or the difference between the Pumping Water Level and the Static Water Level.
Drawdown
indicates the Total Discharge Head(Static plus Friction) between Datum line & point of measurement.
Head Above Datum
volume rate of flow expressed in cubic meters perhouror liters per second to be produced by the pump.
Pump Capacity
the nominal vertical distance (in meters) from Datum to the discharge pipe connection at the pump
Pump Setting
make-up of the water to be pumped.
Water composition
the specification of the available power source (single phase or 3 phase)
Type of Drive
percentage of rated motor main plate power (in kilowatts or horsepower) that will be permitted to be used
Allowable Motor Overload
A pump which operates with a to and fro motion
Reciprocating Pump
The simplest of the reciprocating pump and consists of a piston moving up and down in a cylinder or barrel.
Lift Pump
A plunger is driven backwards & forwards, or up & down by a mechanical working head
Piston or Plunger Pump
Deep –well Piston Pump
When water is more than 7.50 meters below the ground, it is virtually necessary to place the pump in or near the water in the well and pump from there. Water is forced up the drop pipe and out into the delivery pipe.
displacement pump in which a flexible diaphragm replaces the piston in other displacement pumps. The diaphragm is of leather or heavy –gauge rubber.
diaphragm pump
used primarily as a source of fluid power in hydraulic system. It continuously scoops the liquid from the pump chamber
rotary pump
a pump consisting revolving impeller in the pump housing which forces water down a pressure line to an ejector assembly below water level
Jet Pump
uses the energy of falling water to raise a smaller quantity of water to greater heights. It is a pump in which the power generated from flowing in an enclosed pipe is used to raise part of the water to a height above that from which the flow began.
Hydraulic Ram
The characteristic curve of a pump describes the factors that affect its performance. They are usually expressed graphically with the rate of discharge (Q) as abscissa& other factors plotted as ordinates, such as the Head (H), & the Net Positive Suction Head (NPSH).
Pump Performance Curve
Pump Selection “Rule of Thumb”:
- If the well water depth is 6 meters or less, use Centrifugal Pump.
- If the well water depth is 6 to 20 meters, use Jet Pump.
- If the well water depth is more than 20 meters, use Submersible Pump or
Vertical Line Shaft Turbine Pumps.
Submersible Pumps for Water Pit
BMS, BMSP
Submersible Shallow Well Pump
IDROGO
Surface Pumps for Fresh Water Supply, Non Self Priming (Cast Iron Models)
End Suction: FSA,MD,CNA/CSA,CM,CDA
In-line: LPD
Surface Pumps for Fresh Water Supply, Non Self Priming (Stainless Steel Models)
End Suction: CDX Series
3 & 3L Series
Vertical Multistage: EVM,MULTIGO
Self Priming(Cast Iron)
End Suction:FQ, AG Series
Submersible Pumps for Underground Water, Cast Iron model
BHS
Submersible Pumps for Underground Water, stainless steel model
4BHS,6BHS, 4BPS
