Patent ID: 11879442
Assignee: SIEMENS GAMESA RENEWABLE ENERGY INNOVATION & TECHNOLOGY S.L.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  G  Y | IPC F  G

Claim 8:
9. A wind turbine comprising:
a tower,
a nacelle having a tower aperture, and
a seal maintenance arrangement arranged about the tower aperture of the nacelle, wherein the seal maintenance arrangement comprises an annular channel and an annular lip extending downwards into the annular channel, wherein the annular channel and the annular lip are mounted at opposite sides of a gap between the nacelle and the tower, a liquid level sensor arranged to monitor a level of liquid in the annular channel, a liquid reservoir arranged to provide a supply of liquid to the annular channel, and a conveyor for conveying liquid from the reservoir to the annular channel on the basis of a sensor output.