Bearing arrangement for direct drive wind turbine, has generator with stator, rotor, and interposed roller bearing that is sealed by contactless seal e.g. labyrinth seal or multi-stage labyrinth, and sealing gap formed between seal elements

摘要

The arrangement (1) has a generator with a stator (4), a rotor (2) and an interposed roller bearing (3) e.g. double-row taper roller bearing, that is sealed by a contactless seal e.g. labyrinth seal or multi-stage labyrinth. The seal is arranged at both sides of the roller bearing. A sealing gap of fixed size is formed between a set of seal elements (10, 11). The gap or clearance is filled with fat or oil in the region of the interposed roller bearing, where the filling is made preferably in a continuous manner or in fixed time intervals. An independent claim is also included for a direct drive wind turbine.