Xemc Darwind B.v.

Xemc Vwec B.v.

Cornelus Versteegh

Herman Luimes

The invention concerns a wind turbine comprising a tower (), on top of the tower a nacelle () supported by a vertical drum () enclosing an upper room (), a rotor rotating with a more or less horizontal shaft () supported in bearings () mounted in the nacelle with at one end a hub () with turbine blades () and at the other end a generator rotor () rotating with a narrow gap () inside a generator stator (), the generator stator being mounted with its outer surface against an outer wall () of the nacelle (), which outer wall might have cooling strips () or similar on its outer surface. In accordance with the invention the wind turbine comprises a first cooling system for cooling the part () of the outer surface of the generator stator () and/or of the outer wall () of the nacelle () located in the upper room ().

Wind turbine

A lubrication seal such as an oil seal is described for providing a lubrication barrier to confine lubrication in a bearing with a first bearing ring and second bearing ring, comprising a support ring that rotates with one of the bearing rings, mounted in the support ring are a first seal ring and a second seal ring which seal rings are suitable for forming the lubrication barrier with a sealing surface that rotates with the other bearing ring and which support ring is displaceable from a first sealing position in which the first seal ring forms the lubrication barrier with a first sealing area and the second seal ring does not engage the sealing surface to a second sealing position in which the second seal ring forms the lubrication barrier. The sealing surface comprises a second sealing area that only cooperates with the second seal ring after the support ring is displaced into the second sealing position.

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Hilversum, Netherlands

Cornelus Versteegh