US 12,173,695 B2
Axial seal for a generator rotor of a wind turbine
Niels Karl Frydendal, Herning (DK); Søren Poulsen, Holstebro (DK); Vujadin Petronic, Brande (DK); Kim Thomsen, Skørping (DK); and Morten Thorhauge, Ry (DK)
Assigned to Siemens Gamesa Renewable Energy A/S, Brande (DK)
Filed by Siemens Gamesa Renewable Energy A/S, Brande (DK)
Filed on Nov. 16, 2023, as Appl. No. 18/510,827.
Claims priority of application No. 22210466 (EP), filed on Nov. 30, 2022.
Prior Publication US 2024/0175427 A1, May 30, 2024
Int. Cl. F03D 80/70 (2016.01); F03D 80/80 (2016.01)
CPC F03D 80/709 (2023.08) [F03D 80/88 (2016.05); F05B 2220/706 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A sealing arrangement of a wind turbine comprising an axial seal, a stationary member and a generator rotor for sealing a gap between the stationary member and the generator rotor;
wherein the stationary member is arranged between a lubricant chamber and an air chamber;
wherein the generator rotor is configured to rotate about a rotational axis;
wherein the seal is arranged at an end of the stationary member,
wherein the seal comprises a first lip configured to contact the generator rotor;
wherein the first lip is configured to allow a leakage of lubricant at the contact between the first lip and the generator rotor;
wherein the seal further comprises a second lip arranged radially outwards with respect of the first lip and the rotational axis; and
wherein the second lip is at least partially lubricated by the leakage of lubricant at the contact between the first lip and the generator rotor.