Twin Screw Pumps (Bơm trục vít đôi)

1) INTRODUCTION TO THEORY OF TWIN SCREW PUMPS
2) FEATURES AND ADVANTAGES
3) BASIC EXECUTIONS
4) APPLICATION FIELDS
5) 3P PRINZ TWIN SCREW PUMP RANGE
6) 3P PRINZ MODEL DE-CODIFICATION
7) MATERIALS SELECTION
8) FLUIDS HANDLED
9) PUMP EXECUTIONS FOR THE MAIN SECTORS
10) NPSHr AND SUCTION LIFT
11) CRITICAL APPLICATIONS
12) PERFORMANCE TEST STANDARDS
13) API 676 COMPLIANCE AND DEVIATIONS
14) SIZING OF TWIN SCREW PUMPS


PERA-PRINZ® TWIN SCREW PUMPS WORKING PRINCIPLE




PERA-PRINZ® TWIN SCREW PUMPS EXECUTIONS

BY APPLICABLE STANDARD:

• Manufacturer Standard

• API 676

BY MOUNTING:

• Overhung Twin Screws

/ Single Volute (Single End)

/ Single Pair of Screws

• Between Bearing Twin Screws

/ Double Volute (Double End)

/ Double Pair of Screws

• Only the Radial Loads are balanced on the Single Volute Twin Screw Pumps.

• The Radial and Axial Loads are balanced on the Double Volute Twin Screw Pumps.

PERA-PRINZ® TWIN SCREW PUMPS EXECUTIONS


PERA-PRINZ® TWIN SCREW PUMPS EXECUTIONS


PERA-PRINZ® TWIN SCREW PUMPS ADVANTAGES

• Self Priming

• They ensure a constant flow, pulsation-free

• High Suction Lift Capability – the pump NPSH being very low

• Suitable to pump fluids with low, medium, high and very high viscosity.

Very well suited to pump very viscous liquids, sensitive to shear forces and turbulences thanks to the low Internal velocities given by the screws movement.

• Low Noise Level and Low Vibrations

• The Screws are Contactless and Wear out is minimized

PERA-PRINZ® TWIN SCREW PUMPS ADVANTAGES

• Flow can be reversed (reversibility) in low pressure applications, upon request

• Entrapped Air or Gas in the Liquid are tolerated up to 50-60% volume (multi-phase service on request)

• Capability of Dry Running for a limited period and in particular conditions

• Compact Design and Dimensions

PERA-PRINZ® TWIN SCREW PUMPS

GENERAL FEATURES AND PERFORMANCES

• CAPACITY: from 1 m3/h up to 3.500 m3/h [from 4.5 GPM up to 15,500 GPM]

• CASING PRESSURE: up to ANSI 900 - 149 barg [2160 Psig]

• DIFFERENTIAL PRESSURE: up to 60 bar [870 Psi]

• NPSHr: down to 1,5 meters [5 ft]

• VISCOSITIES: from 0,5 cSt up to 50.000 cSt (up to 250.000 cSt in special execution)

• PUMP NOISE LEVEL: up to 85 dB for small and medium sizes

• GAS/AIR HANDLING: Gas/Air Content up to 50% (dissolved, not slug)

• TEMPERATURE: up to 300°C [573°F]

PERA-PRINZ® TWIN SCREW PUMPS COVERAGE CHART


Pera Prinz® - Comparison between HR and HD Series

Pera Prinz® - Comparison between HR and HD Series


Pera Prinz® - Some HD Series pumps dimensions


PERA-PRINZ® TWIN SCREW PUMPS – HM250


PERA-PRINZ® TWIN SCREW PUMPS – HM200 VERTICAL (OFFSHORE / MARINE)


PERA-PRINZ® TWIN SCREW PUMPS WITH ELECTRIC MOTOR – HD PUMPS WITH DRAIN


PERA-PRINZ® TWIN SCREW PUMPS WITH ELECTRIC MOTOR – HM PUMPS



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