1. display and controls 2. pump with motor 3. ball vale for adjusting the head
4. outlet side manometer 5. inlet side manometer
Description
Centrifugal pumps are turbomachines that are used for conveying fluids. The HD 150.04 unit can be used to study a centrifugal pump and to record a typical pump characteristic curve.
The experimental unit includes a self-priming centrifugal pump, a ball valve on the outlet side and manometers on the inlet and outlet side. It is driven by an asynchronous motor. The speed is infi-nitely adjustable by using a frequency converter. A ball valve is used to adjust the head.
In experiments, the operating behaviour of the pump as a function of the flow rate is studied and displayed in characteristic curves. The motor’s speed and electrical power are displayed digitally. Pressures on the inlet and outlet side are displayed on two manometers.
The experimental unit is positioned easily and securely on the work surface of the HD 150 base module. The pump draws in water from the tank on the base module HD 150. The flow rate is de-termined volumetrically by flowing back into the measuring tank on HD 150.
TECHNICAL DETAILS
Centrifugal pump, self-priming
· max. flow rate: 2700L/h
·max. head: 36m
Asynchronous motor
· nominal power: 450W
Measuring ranges
·pressure (outlet): -1…5bar
· pressure (inlet): -1…1,5bar
·speed: 0…3000min-1
· power: 0…1000W
230V, 50Hz, 1 phase
Specification
· Investigation of a centrifugal pump
· Drive with variable speed via frequency coverter
· Ball valve to adjust the head
· Manometers on the inlet and outlet side o the pump
· Digital display of speed and power
· Flow rate determined by base moule HD 150
· Water supply using base module HD 150
EXPERIMENTATION
· Familiarisation with operating behaviour and characteristics of a centrifugal pump through experiments
· Recording the pump characteristic curve at a constant pump speed
· Measuring the inlet and outlet pressure
· determining the flow rate
· Recording the pump characteristics for different speeds
· Power and efficiency curves
· Measuring the electrical drive power
· Determining the hydraulic power
· Calculating the efficiency