Wind turbine with a rotor bearing having channels

A wind turbine with a tower, a nacelle fixed to the tower, and a rotor rotatably mounted on the nacelle via a rotor bearing, the rotor bearing comprising:

• a) an inner ring which is connected to the nacelle, wherein the inner ring is equipped with an oil collecting ring having an outlet;
• b) an outer ring which is connected to the rotor, and wherein the inner ring and the outer ring together delimit an inner bearing space;
• and
• c) a plurality of sealing arrangements which seal the inner bearing space on a nacelle side of the rotor bearing and a rotor side of the rotor bearing;
• wherein the plurality of sealing arrangements each comprise at least two seals, between which a drainage chamber for collecting a leakage oil is formed;
• wherein the drainage chambers on both sides of the rotor bearing are connected to each other via a plurality of channels traversing the outer ring, which are distributed over a circumference of the outer ring, and in that an axis of the rotor bearing is arranged at an angle in a range of 2° to 10° to a horizontal line for promoting a flow of the leakage oil through the plurality of channels to the nacelle side of the rotor bearing;
• wherein the oil collecting ring at least partly wraps around the outer ring in order to collect oil emanating from ends of the plurality of channels in the outer ring when the outer ring is turning;
• and
• wherein the plurality of channels extend in an axial direction of the rotor bearing.

A rotor bearing comprising:

• a) an inner ring equipped with an oil collecting ring having an outlet;
• b) an outer ring, wherein the inner ring and the outer ring together delimit an inner bearing space;
• and
• c) a plurality of sealing arrangements which seal the inner bearing space on one axial end of the rotor bearing and at an opposite axial end of the rotor bearing;
• wherein the plurality of sealing arrangements each comprise at least two seals, between which a drainage chamber for collecting leakage oil is formed;
• wherein the drainage chambers on both sides of the rotor bearing are connected to each other via a plurality of channels traversing the outer ring, which are distributed over a circumference of the outer ring, and in that an axis of the rotor bearing is arranged at an angle in a range of 2° to 10° to a horizontal line for promoting a flow of the leakage oil through the plurality of channels to the axial end of the rotor bearing;
• and
• wherein the oil collecting ring at least partly wraps around the outer ring in order to collect oil emanating from ends of the plurality of channels in the outer ring when the outer ring is turning.