Sine pumps prove effective for high viscosity impregnation resin
27 Mar 2018
One of the world’s largest wind turbine manufacturers, Enercon, is using MasoSine SPS sinusoidal pumps from Watson-Marlow Fluid Technology Group to optimise the delivery of protective impregnating resin at its Magdeburg production facility in Germany.
These positive displacement pumps were selected for their powerful suction capability.
Among the core wind turbine components produced at Magdeburg is the ring generator, which during operation is exposed to particularly high stresses.
By performing impregnation, several objectives are achieved. Firstly, the windings of the generator are protected against humidity, dirt and chemically aggressive substances. Secondly, a potentially disturbing hum from the wind turbine is prevented and any resulting heat can be better directed to the environment.
At Magdeburg, two MasoSine SPS 400 sine pumps are deployed. Each of the pumps delivers approximately 40,000 l/h of (15,000 mPas) impregnating resin at a pumping pressure of around 4 bar (58psi) to coat the copper windings of the ring generator.
MasoSine sine pumps are particularly suitable for use with high viscosity fluids as the rotation of the sinusoidal rotors creates four equal circumferential chambers, into which the impregnating resin is delivered.
Other benefits of the MasoSine pumps include their high suction capability and the significant energy benefits offered, says Watson-Marlow.