Patent ID: 8844935
Filing Date: 2014-09-30
Classification: F16C,F16J

Abstract:
1. A sealing arrangement for a bearing assembly for supporting a main shaft of a wind turbine, comprising: a static seal carrier coupled to a static component of the bearing assembly and comprising a first plurality of axially projecting rings; a rotating seal carrier coupled to a rotating component of the bearing assembly and comprising a second plurality of axially projecting rings; the first plurality of rings and the second plurality of rings disposed in an interdigitated arrangement so as to define a tortuous passageway therebetween; the tortuous passageway having one end in communication with a high pressure area of the bearing assembly and a second end in communication with a low pressure area of the bearing assembly; a scraper seal coupled to the rotating seal carrier and disposed over the second end of the tortuous passageway; an axially inner edge of the scraper seal is in contact with the static seal carrier; and a dust seal coupled to and disposed radially outward from the axially inner edge of the scraper seal.