Abstract: Wind turbine comprising a rotor having a hub carrying one or more blades, an air intake and a nacelle, the hub being rotatably mounted on a frame and the frame extending forward into the hub, wherein an air flow passage is provided between an inside portion of the hub and the nacelle via at least one first opening to the hub.

Abstract: Wind turbine comprising a hub carrying a plurality of blades, the hub being rotatably mounted on a frame, the frame extending forward into the hub, wherein the frame comprises a manhole arranged in an upper side of the portion of the frame extending forward into the hub and the frame being dimensioned such that an average-size adult human can move around through it at least up to the manhole.

Abstract: It comprises a first member with a plate attached and substantially covering at least one portion of a second member (20), both members being rotatable relative to each other and defining a tortuous way, and it further comprises a brush sealing attached to the first member and resting on a siding plate in the second member such that an inner gap formed between said first and second members is sealed. A flexible member may be provided between the brush sealing and the first member for joining them in a flexible way.

Abstract: An auxiliary drive system for driving a wind turbine component is described. The drive system includes a motor, gearing operationally connected with the motor, and an actuator operationally connected with the gearing for actuating the wind turbine component. The auxiliary drive system is provided with one or more locks. The one or more locks are able to interlock with a component of the gearing to lock the auxiliary drive system.

Abstract: It comprises a first member with a plate attached and substantially covering at least one portion of a second member (20), both members being rotatable relative to each other and defining a tortuous way, and it further comprises a brush sealing attached to the first member and resting on a siding plate in the second member such that an inner gap formed between said first and second members is sealed. A flexible member may be provided between the brush sealing and the first member for joining them in a flexible way.

Abstract: Wind turbine comprising a rotor having a hub carrying one or more blades, an air intake and a nacelle, the hub being rotatably mounted on a frame and the frame extending forward into the hub, wherein an air flow passage is provided between an inside portion of the hub and the nacelle via at least one first opening to the hub.

Abstract: Wind turbine comprising a hub carrying a plurality of blades, the hub being rotatably mounted on a frame, the frame extending forward into the hub, wherein the frame comprises a manhole arranged in an upper side of the portion of the frame extending forward into the hub and the frame being dimensioned such that an average-size adult human can move around through it at least up to the manhole.

Abstract: It comprises a main wind turbine frame and at least one housing member defining an interior where parts of the wind turbine are received. The housing members are arranged at a lateral portion of the main frame such that their interior is separated from the main frame. The housing members comprise releasable hinge means to the main frame allowing the housing member to be opened for accessing the interior. Limiting means for restricting an opening angular movement of the housing member are provided.

Abstract: An auxiliary drive system for driving a wind turbine component is described. The drive system includes a motor, gearing operationally connected with the motor, and an actuator operationally connected with the gearing for actuating the wind turbine component. The auxiliary drive system is provided with one or more locks. The one or more locks are able to interlock with a component of the gearing to lock the auxiliary drive system.

Abstract: A wind turbine has a nacelle frame and a first hoist substantially permanently mounted on the frame. The method comprises the processes of hoisting a second, more powerful hoist and crane on the frame with the first hoist; removably mounting the second hoist and the crane on the nacelle frame; hoisting a winch using the second hoist and the crane on the frame, and removably mounting the winch on said frame; performing operations involving handling heavy parts employing said winch; and removing and lowering said winch, crane, and second hoist from the frame.