Various embodiments include gas turbine seals and methods of forming such seals. In some cases, a turbine includes: a first arcuate component adjacent to a second arcuate component, each arcuate component including one or more slots located in an end face, each of the one or more slots having a plurality of axial surfaces and radially facing surfaces extending from opposite ends of the axial surfaces and a seal assembly disposed in the slot. The seal assembly including a backup intersegment seal disposed in the slot on a high-pressure side of the slot and a shim seal disposed in the slot over the backup intersegment seal and covering the backup intersegment seal on a low-pressure side of the slot. The shim seal including one or more shim seal segments and having a gap formed between each of the one or more shim seal segments.

The present disclosure is directed to a system and method for reducing audible tonality of a wind turbine caused by vibrations generated by the drivetrain assembly thereof. The system includes a plurality of damping elements mounted at a plurality of locations on an inner surface of a tower of the wind turbine, the plurality of locations having vibration levels above a predetermined threshold. Thus, during operation of the wind turbine, the plurality of damping elements are configured to damp vibrations of the tower so noise generated thereby.

This application relates to hinged tower segments and transport methods, and particularly to methods and apparatus for transporting and storing hinged segments of steel wind turbine towers. The wind turbine tower comprises a plurality of cylindrical vertical tower sections, which in the finished tower are mounted on top of one another. The vertical section of the tower has a longitudinal axis and comprises a plurality of wind turbine tower segments, the tower segments have vertical and horizontal edges and combine to form a complete vertical tower section by joining along their edges. Adjacent vertical tower sections are joined to each other along the horizontal edges of the wind turbine tower segments. Hinges are secured between tower segments and the tower segments rotated about the hinged axis to make them suitable for transport or storage. A method of assembling a tower section is discussed.

A Pelton runner with a wheel disk and separately fabricated buckets (2), which may be cast or made from a solid block of material and secured detachably to the wheel disk (1), fastened by at least one screw (5) or at least one bolt. At least one screw or at least one bolt is designed as an expansion screw (5) or expansion bolt, where the expansion screw (5) or expansion bolt is subjected to controlled pre-stressing, and each bucket (2) has at least one expansion screw (5) or expansion bolt that is arranged perpendicular to the axis of rotation of the wheel disk (1) and secured to the wheel disk (1).

A method for moving a wind turbine component (42) relative to a wind turbine (16) having a tower (18) with a door (26) for closing off an opening (90) through the tower (18) includes removably positioning a transport system (40) relative to the wind turbine (16), the transport system (40) having a track (44) and a powered drive device (118), such that a first end (78) of the track (44) is positioned outside the tower (18), a second end (80) of the track (44) is positioned inside the tower (18), and the track (44) extends through the opening (90) in the tower (18). The transport system (40) is configured to facilitate movement of the wind turbine component (42) between an inside of the tower (18) and an outside of the tower (18) through the opening (90). The method further comprises moving the wind turbine component (42) vertically within the tower (18) away from or toward the track (44) using the powered drive device (118) of the transport system (40). A transport system (40) for implementing such a method is also disclosed.

The invention provides a hub for a wind turbine, the hub comprising a continuous shell being assembled from at least two shell parts. To improve stiffness of the hub, a plate element is attached within blade flanges of the assembled hub. Due to the combination between shell parts and a plate element, manufacturing and transportation is facilitated while strength and rigidity is ensured.

Disclosed is a wind turbine blade and a method for its manufacture. A lower shell part and an upper shell part are provided, each shell part having a leading edge end and a trailing edge end. A flatback profile component and web for connecting an inner surface of the lower side shell part with an inner surface of the upper side shell part are connected. The assembly which comprises the flatback profile component and the at least one web are placed on the lower shell part and the upper shell part is mounted. The wind turbine blade comprises a flatback profile component being arranged at the trailing edge, wherein the flatback profile component is coupled by at least one distance holder with at least one web, wherein the web couples the interior surface of the upwind side shell part with the interior surface of the downwind side shell part.

A component for a wind turbine blade is described having a reinforced through-going aperture. The reinforcement can be provide by way of a fibre rope arranged around the periphery of the aperture, or as fibre material arranged in a radially-extending arrangement from the aperture.

A rotor blade of a wind turbine. The rotor blade comprises at least one rotor-blade inner portion, having a region connecting to the rotor-blade hub, and at least one rotor-blade outer portion, having a rotor-blade tip, the rotor-blade inner portion and the rotor-blade outer portion each being made substantially of a fibre-reinforced plastic, and the rotor-blade inner portion and the rotor-blade outer portion being connected to each other by a connecting device. The connecting device in this case comprises an inner insert that is at least partially wrapped in the fibre-reinforced plastic of the rotor-blade inner portion, an outer insert that is at least partially incorporated in the fibre-reinforced plastic of the rotor-blade outer portion, the inner insert and the outer insert being connected to each other via a connecting element.

The present invention relates to conductor connection system for a wind turbine lightning protection system adapted to protect a wind turbine blade from lightning strikes. The lightning protection system comprises a down conductor cable adapted to extend in a longitudinal direction of the wind turbine blade and arranged for connection to the root end of the wind turbine blade, and comprises a number of lightning receptors electrically connected to and distributed along the length of the down conductor cable. The down conductor connection system comprises a modular down conductor cable having a first and second down conductor cable part, and at least one down conductor connector arranged between and connected to the ends of the down conductor cable parts. The down conductor connector comprises first and second terminals, connected to an end of each down conductor part, respectively, where the first and second terminals are adapted for mutual connection.