Transcription of Pump Station Design Guidelines Second Edition
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Pump Station Design Guidelines Second Edition
Pump Station Design Guidelines Second Edition Jensen Engineered Systems 825 Steneri Way Sparks, NV 89431 For Design assistance call (855)468-5600 2012 Jensen Precast 2 T AB LE OF C ON T EN T S INTRODUCTION .. 3 PURPOSE OF THIS GUIDE .. 3 OVERVIEW OF A TYPICAL JES SUBMERSIBLE LIFT Station .. 3 Design PROCESS .. 3 BASIC PUMP SELECTION .. 5 THE SYSTEM CURVE .. 5 STATIC 5 FRICTION LOSSES .. 6 TOTAL DYNAMIC HEAD .. 9 HOW pumps WORK .. 13 OVERVIEW OF A SUBMERSIBLE PUMP .. 13 BASIC IMPELLER THEORY .. 14 THE CASING .. 14 THE INLET .. 14 IMPELLER TYPES .. 15 MOTORS .. 17 MECHANICAL SEALS .. 19 PUMP CURVES .. 22 STEEPNESS OF PUMP CURVE .. 24 INTERACTION OF THE SYSTEM CURVE WITH THE PUMP CURVE .. 24 NET POSITVE SUCTION HEAD .. 25 INTRODUCTION TO WET WELL Design .. 26 MINIMUM STORAGE VOLUME .. 27 SIZE OF WELL .. 28 HATCH SIZING .. 28 DIAMETER OF WELL .. 31 CONTROL ELEVATIONS.
The most important part of any pump selection is first determining the system curve. This means, at the very least, the flowrate and head that will be required of the pump must be identified. Often this is the first mistake made in the selection process. In many potable water booster stations, the flowrate is determined by a downstream demand.
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