WIND TURBINE AND METHOD OF CONSTRUCTION OF A WIND TURBINE

• US 20130011273A1
• Filed: 03/11/2011
• Published: 01/10/2013
• Est. Priority Date: 03/26/2010
• Status: Active Grant

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: Munch, Jesper, Kjaergaard, Finn
• Granted Patent: US 9,759,190 B2
• Time in Patent Office: Days
• US Class Current: 416/244.R
• CPC Class Codes: F03D 15/20 Gearless transmission, i.e. direct-drive
• CPC Class Codes: F03D 7/0224 Adjusting blade pitch
• CPC Class Codes: F03D 80/00 Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
• CPC Class Codes: F03D 9/25 the apparatus being an electrical generator F03D9/22 takes precedence
• CPC Class Codes: F05B 2240/14 Casings, housings, nacelles, gondels or the like, protecting or supporting assemblies there within
• CPC Class Codes: F05B 2260/406 through hydraulic systems
• CPC Class Codes: F05B 2260/60 Fluid transfer
• CPC Class Codes: F05B 2260/74 by turning around an axis perpendicular the rotor centre line
• CPC Class Codes: F05B 2260/79 Bearing, support or actuation arrangements therefor
• CPC Class Codes: Y02E 10/72 Wind turbines with rotation axis in wind direction

Abstract

Disclosed is a wind turbine with a nacelle and a rotor, the rotor including a number of blades and a hub, the nacelle and the hub being connected with each other in an interface region, the wind turbine further including a transport system for transporting hydraulic and/or pneumatic fluid from the nacelle into the hub. The transport system includes a rotary unit as a connection through which the fluid passes and a part of which rotates in operation together with the hub which rotary unit is positioned in the hub at a position distanced from the interface region facing away from the nacelle, the transport system further including a pipe system leading from the interface region into the hub to the rotary unit and being fixed in its position. The disclosure also concerns a method of construction of such wind turbine.

Claims

1-10. -10. (canceled)

11. A 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, the transport system comprising a rotary unit and a pipe system,

wherein the rotary unit is positioned in the hub at a distance away from the interface region, a first part of the rotary unit rotatable with the hub and a second part of the rotary unit is stationary, the fluid is transported through the rotary unit

wherein the pipe system leads from the interface region into the hub to the rotary unit and being fixed in its position, and

wherein the fluid is hydraulic fluid and/or pneumatic fluid

12. The wind turbine according to claim 11,

wherein the wind turbine is direct drive with a drive train directly connecting the rotor with a generator.

13. The wind turbine according to claim 11,

wherein the pipe system is fixed within the hub via a rail projecting from the nacelle into the hub.

14. The wind turbine according to claim 13,

wherein the rail extends from the nacelle to the rotary unit.

15. The wind turbine according to claim 13,

wherein the rail is equipped with a cavity in which a pipe of the pipe system is positioned.

16. The wind turbine according to claim 13,

wherein the rail is fixed to the nacelle such that the interface region the rail is situated closely to an inner surface of the nacelle.

17. The wind turbine according to claim 11,

wherein the rotary unit is directly connected to a hydraulic and/or pneumatic pitch system in the hub.

18. The wind turbine according to claim 11, further comprising:

a pump situated in the nacelle, the pump configured to provide for an increased pressure of the fluid in the transport system.

19. The wind turbine according to claim 11,

wherein the rotation axis of the rotary unit is positioned at a rotation axis of a drive train connecting the rotor with a generator.