A blade root cover segment suitable for fitting to a wind turbine blade to span a gap between the blade and a spinner cover. The blade root cover segment includes a first end and a second end and comprises: a curved flange for abutting against a correspondingly curved surface of the wind turbine blade; a cover wall extending radially from the flange; and a tensioning band associated with the flange. The tensioning band comprises a first end proximate to the first end of the blade root cover segment and a second end proximate to the second end of the blade root cover segment, and wherein the first end and the second end of the tensioning band include connection means for connecting with and applying tension between a like blade root collar segment. The invention also encompasses a blade root cover comprising a plurality of blade root cover segments. The invention also extends to a method of assembling a blade root cover from a plurality of blade root cover segments.

The present application includes a system for generating energy via a rotating drum. The system includes a housing, a drum, and a plurality of enclosed chambers. The housing surrounds the drum and helps to distinguish between a gravitational domain and a buoyancy domain. The drum is coupled to a shaft and configured to rotate within the housing about a central axis. The plurality of enclosed chambers are radially aligned around an internal surface of the drum. The drum is exposed to a gravitational domain and a buoyancy domain simultaneously so as to induce rotation of the drum around the shaft. The enclosed chambers are subjected to gravitational forces in the gravitational domain and the enclosed chambers are subjected to buoyancy forces in the buoyancy domain.

A wind turbine cooling system, a wind turbine with the cooling system, and a method for testing the cooling system are provided. The cooling system includes a radiator assembly and a nacelle. The nacelle includes a housing rotatably connected with the radiator assembly. The cooling system is configured to thermally couple the radiator assembly to a heat source inside the nacelle. The radiator assembly is moveable between a first position and a second position. When in the first position, the radiator assembly extends away from an upper roof of the housing of the nacelle. When in the second position, the radiator assembly is contained inside the housing of the nacelle.

A sliding bearing includes an inner ring element; an outer ring element; and at least one sliding bearing element, which is arranged between the inner ring element and the outer ring element, wherein the sliding bearing element includes at least two sliding bearing pads, wherein the individual sliding bearing pads each have a bearing surface, which has the basic shape of a spherical cap.

The present invention relates to an access arrangement (90) of a wind turbine blade for accessing a hollow space within the blade. The access arrangement (90) comprises an access opening (180) provided in the blade shell member, a cover panel (92) for covering the access opening (180), a sealing member (96) arranged between the cover panel (92) and the blade shell member, and one or more fasteners (98) for releasably fastening the cover panel (92) to the blade shell member. The present invention also relates to a wind turbine blade comprising the access arrangement (90).

A seal arrangement is disclosed for sealing an interior space between a bearing housing and a rotatable shaft with respect to a surrounding area. The seal arrangement includes a seal body which can be fastened to the bearing housing with a first end and a second end. The seal body is extended in an elongate manner along a main extent direction and is configured to be arranged in an annular manner around the rotatable shaft in a mounted state. The first end and the second end have a common butt joint. A projecting region is arranged at the first end of the seal body and projects tangentially with respect to the rotatable shaft in the direction of a predefined main rotational direction of the rotatable shaft. The projecting region projects beyond the seal body and overlaps the butt joint.

The present invention relates to a water intrusion prevention system (1) mounting on a turbine blade (100) of a wind turbine. In order to exhibit excellent weather protection, the water intrusion prevention system (1) comprises a connecting means (10) adapted for removably fixing the water intrusion prevention system (1) on the turbine blade (100), further a collar sheet (20) disposed on the connecting means (10) and having a collar portion (22) extending away from the connecting means (10), the collar portion (22) constituting an upper collar sealing round about against an outer surface (101) of the turbine blade (100) if the water prevention system (1) is mounted on the turbine blade (100). In addition, the water intrusion prevention system (1) includes an umbrella sheet (30) disposed over the connecting means (10), the umbrella sheet (30) covering an upper side of the pressing means (10) and protruding laterally downwards away from the connecting means (10) round about the turbine blade (100) if the water prevention system (1) is mounted on the turbine blade (100). The umbrella sheet (30) sealingly adjoins the collar portion (22).

A structure adapted to traverse a fluid environment exerting an ambient fluid pressure is provided. The structure includes an elongate body extending from a root to a wingtip and encapsulating at least one interior volume containing an interior fluid exerting an interior fluid pressure that is different from the ambient fluid pressure. A method of retrofitting a structure adapted to traverse a fluid environment exerting an ambient fluid pressure, the structure comprising an elongate body extending from a root to a wingtip and having at least one interior volume is also provided. The method includes sealing the elongate body to encapsulate the at least one interior volume containing an interior fluid; associating at least one valve with the at least one interior volume; and modifying interior fluid content via the at least one valve to produce an interior fluid pressure that is different from the ambient fluid pressure.

A wind energy generation system includes a tower, a nacelle provided in an upper portion of the tower to be rotatable around a central axis of the tower, a hub provided in front of the nacelle to be rotatable around an axis orthogonal to the central axis, and one or more blades provided on the hub. An oil receiving portion is provided on an outer wall of the tower to protrude outward from the outer wall and encircle the outer wall around the central axis. One or more opening portions that guide the oil received by the oil receiving portion into the tower are provided at a portion of the outer wall of the tower at which the oil receiving portion is provided. In the wind energy generation system, outflow of oil to the outside from the generation system can be inhibited.

Disclosed is a method for sealing a joint between a first blade section and a second blade section of a wind turbine blade, a sealing member and a wind turbine blade comprising a sealing member. The sealing member having a first surface and a second surface. The sealing member having a width between a first edge and a second edge. The sealing member being configured for attachment to the first outer shell along the first edge, and for attachment to the second outer shell along the second edge. The sealing member comprising a corrugated section between the first edge and the second edge, the corrugated section comprising one or more valleys and/or ridges extending along a lengthwise direction of the sealing member.