Patent ID: 9194364
Filing Date: 2015-11-24
Classification: F03D,F05B,Y02E

Abstract:
1. A direct drive wind turbine, comprising: a rotor comprising a hub and a plurality of blades, a nacelle connected to the hub in an interface region; a transport system for transporting fluid from the nacelle into the hub, wherein the transport system comprising a rotary unit positioned in the hub at a distance from the interface region in a direction away from the nacelle, a first part of the rotary unit is rotatable together with the hub and a second part of the rotary unit is stationary, the fluid is transported through the rotary unit, wherein the fluid is hydraulic fluid, pneumatic fluid, or both pneumatic fluid and hydraulic fluid; wherein the transport system comprises a pipe system leading from the interface region into the hub to the rotary unit, wherein the pipe system is fixed within the hub such that the pipe is not rotated during operation of the rotary unit; and wherein the pipe system is fixed within the hub by a rail projecting from the nacelle into the hub.