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Fluid mech > Pumps > Flashcards

Pumps Flashcards

1
Q

is an equipment used to transfer fluid from a region of low pressure to another region at same or higher pressure

A

Pump

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2
Q

Pump–A device or machine that compresses and/or transports fluids usually by _________

A

pressure or suction

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3
Q

Categories of Pump Classification

A
  1. As to Operating Principle
  2. As to Casing Design
  3. As to Mounting
  4. As to Connection with Driver
    (Motor or Engine)
  5. As to Construction Materials
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4
Q

Pumps under Centrifugal type

A

a. Radial Flow
b. Axial Flow
c. Mixed Flow

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5
Q

Pumps under Positive Displacement Type

A

a. Reciprocating Piston
b. Reciprocating Plunger
c. Rotary Blades
d. Rotary Roots
e. Screw Types
f. Gear

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6
Q

Pumps under Turbine Type

A

a. Axial Flow
b. Mixed Flow

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7
Q

Classification of Pumps as to Casing Design:

A
  1. Horizontal Split Case
  2. Vertical Split Case
  3. Submerged
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8
Q

Classification of Pumps as to Mounting

A
  1. Base Mounted
  2. In –line Mounted
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9
Q

Classification of Pumps as to Connection with Driver:

A
  1. Flexible Coupled
  2. Case Coupled
  3. Belt Driven
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10
Q

Classification of Pump as to Construction Materials

A
  1. Cast Iron
  2. Stainless Steel
  3. Bronze
  4. Concrete
  5. Plastic
  6. Fiberglass
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11
Q

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

A

Centrifugal Pump

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12
Q

The higher the speed of rotation, the greater the ___________ that can be pumped or the greater the ___________- that can be generated.

A

Volume; Head

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13
Q

The recommended suction lift for centrifugal is___meters and should not exceed __ meters

A

4.5; 6

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14
Q

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

A

Submersible Pump

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15
Q

indicates the size of the pump to be installed.

A

Well Diameter

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16
Q

indicates the Static Water Level, the vertical distance from the surface (Datum Line) to the water level when no wateris being pump

A

Well Depth

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17
Q

the vertical distance from the Datum Line to the water level when specified capacity is being pumped.

A

Pumping water level

18
Q

the vertical distance or the difference between the Pumping Water Level and the Static Water Level.

A

Drawdown

19
Q

indicates the Total Discharge Head(Static plus Friction) between Datum line & point of measurement.

A

Head Above Datum

20
Q

volume rate of flow expressed in cubic meters perhouror liters per second to be produced by the pump.

A

Pump Capacity

21
Q

the nominal vertical distance (in meters) from Datum to the discharge pipe connection at the pump

A

Pump Setting

22
Q

make-up of the water to be pumped.

A

Water composition

23
Q

the specification of the available power source (single phase or 3 phase)

A

Type of Drive

24
Q

percentage of rated motor main plate power (in kilowatts or horsepower) that will be permitted to be used

A

Allowable Motor Overload

25
Q

A pump which operates with a to and fro motion

A

Reciprocating Pump

26
Q

The simplest of the reciprocating pump and consists of a piston moving up and down in a cylinder or barrel.

A

Lift Pump

27
Q

A plunger is driven backwards & forwards, or up & down by a mechanical working head

A

Piston or Plunger Pump

28
Q

Deep –well Piston Pump

A

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.

29
Q

displacement pump in which a flexible diaphragm replaces the piston in other displacement pumps. The diaphragm is of leather or heavy –gauge rubber.

A

diaphragm pump

30
Q

used primarily as a source of fluid power in hydraulic system. It continuously scoops the liquid from the pump chamber

A

rotary pump

31
Q

a pump consisting revolving impeller in the pump housing which forces water down a pressure line to an ejector assembly below water level

A

Jet Pump

32
Q

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.

A

Hydraulic Ram

33
Q

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).

A

Pump Performance Curve

34
Q

Pump Selection “Rule of Thumb”:

A
  1. If the well water depth is 6 meters or less, use Centrifugal Pump.
  2. If the well water depth is 6 to 20 meters, use Jet Pump.
  3. If the well water depth is more than 20 meters, use Submersible Pump or
    Vertical Line Shaft Turbine Pumps.
35
Q

Submersible Pumps for Water Pit

A

BMS, BMSP

36
Q

Submersible Shallow Well Pump

A

IDROGO

37
Q

Surface Pumps for Fresh Water Supply, Non Self Priming (Cast Iron Models)

A

End Suction: FSA,MD,CNA/CSA,CM,CDA
In-line: LPD

38
Q

Surface Pumps for Fresh Water Supply, Non Self Priming (Stainless Steel Models)

A

End Suction: CDX Series
3 & 3L Series
Vertical Multistage: EVM,MULTIGO

39
Q

Self Priming(Cast Iron)

A

End Suction:FQ, AG Series

40
Q

Submersible Pumps for Underground Water, Cast Iron model

A

BHS

41
Q

Submersible Pumps for Underground Water, stainless steel model

A

4BHS,6BHS, 4BPS

Fluid mech (1 decks)

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