Pumps for the power industry
Matching a pump to the different combinations of delivery rate and head in a power plant requires a range of impellers, each with its specific speed. However, even with a range of impellers, there are often daily occasions which call for something in between the standard impeller designs. ANDRITZ has incorporated a hydraulic device to adjust the impeller blade angles on its vertical line shaft pumps to react to changing conditions while the pump is operating.
Before a vertical line shaft pump is installed, ANDRITZ selects the impeller design and sets the angle of the blades to meet specific process requirements. However, power plants commonly experience changes in the cooling water flow rate and head (e.g. day/night operations or tidal fluctuations). So, additional flexibility beyond fixed-angle impellers or manually adjusted impellers is needed. There are typically two ways to achieve that flexibility: speed control with a frequency converter or hydraulic impeller blade adjustment. ANDRITZ delivers pumps with either type of adjustment. So the question arises, “When does it make sense to use the hydraulic impeller blade adjustment?” The brief answer is that it depends upon the specific application: range of fluctuation in delivery rate and head, other installed equipment, budget available, etc. The specialists at ANDRITZ will help in the evaluation and selection.
For more information on our pump technologies for the power industry please have a look at our product pages below, brochures in the sidebar or contact us directly.
Cooling water pumps