Pumps Reciprocating

7/23/2019 Pumps Reciprocating

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RECIPROCATING PUMPS


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POWER PUMP


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STEAM PUMPS


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SYSTEM COMPONENTS


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FLOW PULSATION

MULTIPLEXING

PULSATION DAMPENER


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FLOW CURVES


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How it Works

During suction stroke, a fixed amount (fixed

volume) of liquid at near suction conditions is

trapped inside the fluid chamber, then with

discharge stroke compresses it to dischargepressure, and pushes it to outlet nozzle.


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Reasons for Using Reciprocating

Pumps

The total cost is lower.

High efficiency (84% up to 94%).

Suitable for high pressures (10,000 Psig).

Suitable for abrasive and / or viscous

slurries.

Capacity regulation simple.


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Disadvantages

Pulsating flow

maintenance cost sometimes is greater than

that in centrifugal pump.

Low thermal efficiency when driven by a gas

such or steam.


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Classification

Drive end, i.e. power source.

Orientation of centerline of the pumping element i.e.horizontal or vertical.

Action strokes per cycle of the crank shaft, single

acting or doubleacting.

Configuration of the pumping element: piston,plunger or diaphragm.

Number of drive rods, i.e, simples, duplex ormultiplex


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Liquid End Components


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Plunger pump end components


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Liquid cylinder.

Pumping element.

Stuffing boxes

Suction and discharge Valves


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Valve types

stem guided disk valveWing guided valveSemi spherical valve


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Drive end components


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Crankshaft and the main bearings


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Flow characteristics


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Next

CENTRIFUGAL PUMPS
http://localhost/var/www/apps/conversion/tmp/scratch_2/2_pumps-centrifugal.pptx

Documents

Pumps Reciprocating