Patent ID: 11879439
Assignee: VESTAS WIND SYSTEMS A/S
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 15:
16. A wind turbine drivetrain component comprising a rotating shaft with a radial seal, the radial seal comprising a stationary part and a rotating part,
the stationary part comprising a ring with an inner edge and an outer edge, the inner edge being configured for contactlessly surrounding the shaft,
the rotary part comprising a disc, coaxially connected to the shaft for rotation therewith and comprising a flange that wraps around the outer edge of the ring, and
the radial seal further comprising an annular air lock gap for containing an amount of lubrication fluid and thereby closing off the air lock gap when the rotary part rotates at a rotational speed above a predetermined threshold speed, the annular air lock gap being formed by an inner surface of the flange, an outer part of the opposing parallel surface of the disc and the outer edge of the ring,
wherein the radial seal further comprises a labyrinth seal, provided downstream the annular air lock gap and between the stationary part and the rotary part.