Turbine pumps provide smooth performance
A
Pump Engineering product story
Edited by the Engineeringtalk editorial team
Jun 19, 2008
The regenerative turbine pump is characterised by its impeller design, where the impeller has a large number of blades machined into its periphery.
Pump Engineering's MTH regenerative turbine pumps suit boiler feed, high-pressure cooling, refrigeration and CIP chemical feed applications.
They are available as direct drive, bareshaft, magnetic drive and canned rotor pumps and provide low flow at high-pressure, very low NPSH for high-temperature or low vapour pressure, a long-life and a smooth, balanced performance, housed in a neat and very compact design.
The regenerative turbine pump is characterised by its impeller design, where the impeller has a large number of blades machined into its periphery.
Typically, a row of blades is located on each side of the impeller to minimise axial thrust.
In a traditional centrifugal pump, fluid enters the impeller at its outer edge and is accelerated through approximately 330 degrees of rotation and exits the pump, at, or near the same radius as the inlet.
An area of about 30 degrees separates the inlet from the outlet and in this area the casing walls parallel to the impeller shroud are situated very close to the rotating impeller.
This in effect, is two impellers in one, operating within identical channels on the casing and the cover.
This allows the impeller to float freely and find its own equilibrium, ensuring long life, smooth and balanced performance and minimises leakage between the high-pressure exit and impeller inlet.
The regenerative turbine pump can generate a very steeply rising head curve between minimum and maximum flow, which ensures very accurate flow control and very stable operation.
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