A manufacturer of wind turbines uses three Boerger Rotary Lobe Pumps for conveying impregnating resins. Resin is used for sealing certain components (rotor and stator parts, windings). The Boerger pumps transfer the resin from a storage tank to an impregnating vat.
The components that need to be sealed are heated and immersed in the impregnating vat of resin. The heat then causes the resin to harden on the heated components. After impregnating, the components are removed from the vat. To prevent the remaining resin from hardening in the vat, it needs to be pumped back to the storage tank as quickly as possible.
When constructing the plant, the wind turbine manufacturer sought a pump which would be able to convey the highly viscous resin, be low on space and which could achieve a very high pump output if the impregnating vat had to be emptied in an emergency. The customer decided on three Boerger Rotary Lobe Pumps. The pumps were assembled vertically to prevent any medium deposits in the pipes.
|Börger||Rotary Lobe Pumps|
|Viscosity||max. 15,000 mPas|
|Rated capacity||40 m³/h (176 usgpm/h)|
|Pressure||6 bar (87 psi)|
|Speed||50 - 100 rpm|