Pumps Flashcards
(37 cards)
is an equipment used to transfer fluid from a
region of low pressure to another region at same or
higher pressure. (PSME Code 1993)
Pump
invented the first force pump.
Ctesibius
When was the pump invented?
120BCE
A device or machine that compresses and/or
transports fluids usually by pressure or suction, or both;
may be used to remove water from a construction site or
to convey water from one elevation to another. (Harris,
C.M.; Dictionary of Architecture and Construction, 1975
Pump
What are the different classifications
of pumps?
- As to Operating Principle
- As to Casing Design
- As to Mounting
- As to Connection with Driver
(Motor or Engine) - As to Construction Materials
Classification of Pumps as to
Operating Principle:
- centrifugal
2.positive displacement type
3.turbine type
Operating Principle: Centrifugal Type
- Radial
- Axial
- Mixed
Operating principle: Positive displacement type
- Reciprocating Piston
- Reciprocating Plunger
- Rotary Blades
- Rotary Roots
- Screw types
- Gears
Operating Principle: Turbine Type
- Axial
- Mixed
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
(Built by Osborne Reynolds, 1875) 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
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
What are the important considerations for
accurate Submersible Pump selection?
- Well Diameter
- Well Depth
3.Pumping Water Level - Drawdown
- Head above Datum
- Pump Capacity
- Pump Setting
- Water Composition
- Type of Drive
- Allowable Motor Overload
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
water is being pump.
Well Depth
the vertical
distance from the Datum Line to the water
level when specified capacity is being
pumped. During the pumping test, Pumping
Water Level is the depth of water when the
amount of water withdrawn from the well &
the amount of replenishment of water to the
well is equal.
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 per hour or 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
