Filter systems for windpower plants - Lynch Fluid Controls Inc. - #4

The lubrication system developed by INTERNORMEN Technology and co-ordmated with Ihe users and be fore-mentioned co-operating partners has proved its general functional iiy by special experiments. Cold start conditions up to -4^JF ambieni temperature were simulated, and the special gear oil was used, The oil cross-How oi the air-oil-cooler cooled down 1o 4 F could be achieved afler 2 minutes. The time until an evident increase of temperature T7 at the cooler ouiiet. respectively until an oil cross-flow OK ot about 20% ol the total How Q In Ihe range ot set pressures Irom B7 lo 174 PSI and Irom to to 2 minutes coiild be influenced by an adjustable pressure difference valve VD3. Ail syslem components such as the pump, the fitter, the valve system of the filters as well as the tube sys

lem wo<Ked propefly from the cold start up to the maximum temperature of 158^ without any negative

effects on ihe total function oi the oil supply to Ihe gear.

At any time the oil flow Q was filtered 100 %. and the oil flow was conducted in full extent - except of the deaeration flow Q5 - through the main element HS, filter fineness 10 urn glass tore fleece at otl viscosities < 4635 SUS. To indicate Ihe respeciive stales of operallon INTERNORMEN Technology offers efectrc. electronic and visual pressure difference indicators which are connected with the filter without any tubes. For the protection of the pump a further combined protective filter with mesh width of ?50. respectively 5oo urn and a permanent magnet is being prepared as a supplement to the proved lubrication system.