Rotating Pump Training

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Pump Types

PUMP

Dynamic Pump Displacement pump

Centrifugal Pump

And

Special effect pump

Reciprocating pump

And

Rotary pump

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Positive Displacement pump

Plunger pump

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Gear Pump (Positive Displacement pump)

Gear Pump (For Oil or Diesel)

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Centrifugal pump Detail

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Centrifugal force

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Pump Diagram

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Sectional view of centrifugal pump

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Impeller Types

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Impeller material

Impeller are generally made of

Bronze

Polycarbonate

Cast iron

Stainless steel

Other material (According to the usage)

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Sleeve

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Mechanical Seal

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Mechanical seal

Parts classification

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Mechanical seal types

Different type of mechanical seal

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Mechanical seal Classification

By Arrangement

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Mechanical Seal Classification

By design

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Pump components

Stationary component( Casing, Gland, pump body)

Rotating component

(Shaft and Impeller)

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Centrifugal pump and working principle

It convert the energy of prime mover in to velocity orkinetic energy and then in to pressure energy of fluid.

Centrifugal pumps in J10 plant

Cooling water pumps- 3nos

BFW pumps- 2nos

Process condensate pump- 2nos

Condensate extraction pump- 2nos

Neutralisation pit pump- 2nos

Waste water pit pump- 2nos

De-min plant pumps

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Select ion of Pump Capacity

Capacity is the flow rate with which liquid is moved orpushed by the pump to the desired point in the

process. Its commonly measured in either gallons

per minute (gpm) or cubic meters per hour (m3/hr)

SELECT CAPACITY BY FEW FACTORS

Process liquid density

Size of the pump and its inlet and outlet sections.

Impeller size

Speed RPM

Size & shape of cavities between vanes

Suction and discharge temp & pressure

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Important Pump Terms

Static suction head hs

Static discharge head hd

Friction head hf

Total suction Head Hs

Total discharge head Hd

Net Positive suction head required NPSHr

Net Positive suction head available NPSHa

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Definitions :

Head:Centrifugal pump curves show PRESSURE as head.

Which is the equivalent height of the water with SG=1

this makes allowance for specific gravity variations in

the pressure to head conversion to cater for higher

power requirements.

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Static Head

The vertical height difference from surface of water

source to centreline of impeller is termed as static

suction head or suction lift.

The vertical height difference from centreline ofimpeller to discharge point is termed as discharge

static head.

The vertical height difference from surface of water

source to discharge point is termed as TOTALSTATIC HEAD

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Total Dynamic head:

Total height difference (total static head) plus frictionlosses & Demand pressure from nozzles

(Total suction head + Total discharge head=Total

dynamic head)

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NPSH

Nett positive suction head - related to how muchsuction lift a pump can achieve by creating a partial

vacuum. atmospheric pressure then pushes liquid in

to the pump. A method of calculating if the pump will

work or not.

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Cavitation:

As liquid moves into a pump, there is a pressure drop

due to the effects of the entrance, friction in the suction

piping, etc.

if the pressure drops below the vapor pressure of the

fluid being moved, the liquid may vaporize.

The bubbles implode, creating shockwaves that can

pit and erode the equipment.

This phenomena is called cavitation and can severely

damage the pump.

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Pump Curve

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Energy Saving Options:

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In case of Trouble shooting:

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In case of Trouble shooting:

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In case trouble shooting:

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Formula for to calculate FLOW in GPM

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Formula for to find HEAD in ft:

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Formula for NPSH:

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BRAKE HORSE POWER CALCULATION:

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WATER HORSE POWER CALCULATION:

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EFFICIENCY CALCULATION:

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Sample Pump Service report:

About BFW pump P-5601-2

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J10 Plant BFW PUMP P-5601