| 摘要 |
<p>A yaw brake 3 for an underwater turbine comprises a stacked disc brake comprising a plurality of overlapping brake fins 35, 37 which can be urged against one another to restrict or prevent movement of a rotating portion of the underwater turbine and/or urged apart to allow the rotating portion to move relative to a fixed portion. The pitch of the turbine blades may be varied before or during rotation of the turbine nacelle about the yaw axis to reduce drag. Also disclosed is a means of compensating for bearing wear in a yawing turbine, comprising a coupling which is adapted to permit relative displacement between the first portion and the second portion corresponding to the amount of bearing wear. Further disclosed is a cable management system for handling a cable during installation of a turbine nacelle on a substructure comprising a support arm to support a cable connected to the turbine nacelle as the interface is lowered onto or raised from the substructure.</p> |
