Abstract: The invention concerns a regulating valve for the discharge of liquid from a container comprising a movable main valve body for opening and closing an outlet opening for the liquid to be discharged, and a movable pilot valve body for controlling the main valve body, characterized in that the main valve body and the pilot valve body are mechanically coupled together at least in one position relative to each other.

Abstract: A method for preparing a more reliable connection between two members is provided. The method involves the use of a gas-removal layer which allows for gas transport in a number of overall directions in a plane of the gas-removal layer. The gas-removal layer comprises a resin and during consolidation the gas-removal layer is deformed to form a collection substantially free from entrapped gas voids. In addition, a gas-removal layer is provided as well as a mould for casting of gas-removal layers and a method for preparing such a mould. The method and the gas-removal layer provided are particularly useful for manufacturing of wind turbine blades and spars for such blades.

Abstract: A method of operating a wind turbine above a predefined wind velocity comprising the step of operating a control parameter of the wind turbine within a tolerance band from a reference set-point curve of that control parameter. A wind turbine and a cluster of wind turbines is also contemplated.

Abstract: A hydraulic system and method for controlling the brake of a wind turbine are provided. During operation of the wind turbine, pressurized working fluid in the hydraulic system is blocked from being supplied to the brake. Even if some of this fluid does reach the brake, it is drained to prevent a pressure build-up and activation. To activate the brake, this drainage is stopped and the pressurized fluid is supplied to the brake. The blocking and unblocking the pressurized working fluid may be controlled by first and second activation valves arranged in parallel in a supply line that communicates the working fluid to the brake.

Abstract: A wind turbine includes a tower, a nacelle located adjacent a top of the tower, a rotor coupled to the nacelle, and a dynamic vibration damper coupled to the tower and configured to dampen vibrations induced in the tower in a torsional direction while negligibly effecting vibrations induced in the tower in bending directions. The dynamic vibration damper may be tuned to a resonant frequency of the wind turbine in the torsional direction. A method of retrofitting a wind turbine with a vibration damper is also disclosed.

Abstract: A method for controlling a wind turbine rotor during a stop process by pitching the rotor blades fast, e.g. with an angular rate of 10-15°/s to a no-thrust position, after which the rotor blades are pitched to maintain the no-thrust or a thrust against the direction of the pendulum movement of the tower for a while to prevent the aerodynamic thrust from aggravating the pendulum movement of the tower. With this control strategy, the bending moments of the tower root are minimized, leading to avoidance of wind turbine tower failure, to prolongation of the life time for a wind turbine tower and the possibility of erecting wind turbine towers of less reinforcement at the tower root.

Abstract: A dispenser of viscous fluid, in at least one embodiment a hot melt glue adhesive, has a heater element, an adhesive source, a main common passage, and a series of valves that all fluidly connect to the main passage. A sheet of receiving material, such as an envelope, has hot melt glue applied to its surface as it passes under the series of valves. A variable amount of valves can be activated by moving control rods inwardly or outwardly of the main common passage. The moving control rods have indicator markers, a securing screw and are housed in U-shaped beds which collectively make adjusting the dispensing pattern very easy.

Abstract: Methods of moving a rotating device of a wind turbine during transportation or standstill are provided. The methods include securing at least one auxiliary device to a position and connecting the device to one or more shafts of the rotating device at transportation or standstill. The auxiliary device is able to store, generate and/or convert energy during transportation, transferring energy continuously from at least one auxiliary device to one or more shafts of the rotating device during transportation or standstill, and moving one or more shafts of the rotating device continuously or discontinuously from a position to another. Also provided is a nacelle for a wind turbine, an auxiliary device, a control system for controlling moving of a rotating device of a wind turbine nacelle during transportation of the nacelle and use thereof.

Abstract: The invention relates to a support system for a wind turbine component with a rigid structure such as a wind turbine nacelle or a section of a wind turbine tower. The support system comprises a plurality of engagement mechanisms (6, 7, 8, 9) defining at least three corners, possibly at least four corners, of a surface. The surface, in case of the support system comprising at least four engagement mechanisms, is capable of forming a curved surface, and the surface, in case of the support system comprising at least three engagement mechanisms, is at least capable of being tilted in relation to e.g. a vertical orientation. Further, the invention includes a method for operating the support system by simultaneously operating the lower and upper telescopic actuator on each of the support systems, so that the wind turbine component can be lifted or lowered.

Abstract: The disclosure relates to a method of erecting a tower comprising; —providing a foundation (1); —providing at least one top section (20) of a tower; —providing a first lifting mechanism (10) adapted to carry the top section (20); —providing at least one lower most tower section (25) onto the foundation (1); —lifting said at least one top section (20) of the tower by lifting the first lifting mechanism (10) relative said at least one lower most tower section (25); —adding at least one second lower most section (24) above said at least one lower most tower section (25); —lifting said at least one top section (20) of the tower by lifting the first lifting mechanism (10) relative said at least one second lower most tower section (25). Preferably a second lifting mechanism is carried by a nacelle which is rotatably arranged on the top section, thereby allowing the second lifting mechanism to be orientated in different orientations relative the top section.

Abstract: Apparatus and methods for repairing damaged tendons or ligaments. Various repair apparatus include an elongate tensile member and a pair of anchor assemblies connected for movement along the tensile member on either side of a repair site, such as a tear or laceration. The anchor assemblies or structures may take many forms, and may include barbed, helical, and crimp-type anchors. In the preferred embodiments, at least one anchor structure is movable along the elongate tensile member to assist with adjusting a tendon segment to an appropriate repair position and the anchor structure or structures are then lockable onto the elongate tensile member to assist with affixing the tendon at the repair position. Tendon and/or ligament-to-bone repair apparatus and methods employ similar concepts.

Abstract: A tower part for a wind turbine includes at least one wall segment and at least one aperture segment including at least one aperture. The wall segment and the aperture segment are connected and the aperture segment is of a substantially uniform thickness and is thicker than the thickness of the wall segment. The tower part further includes an aperture cover system for covering at least one aperture in a tower part for a wind turbine, including cover plates and attachments for attaching the system to the tower part, where the attachments do not affect the fatigue limit of the tower part.

Abstract: A wind turbine includes a rotor having a rotational axis and a wind turbine blade connected to a hub through a pitch bearing. The pitch bearing includes an outer ring, a center ring and an inner ring. The pitch bearing further includes a first rolling element arrangement having at least two rows of rolling elements between the center ring and one of the inner and outer rings, and a second rolling element arrangement having at least one row of rolling elements between the center ring and the other of the inner and outer rings. A first row of the at least two rows is arranged at a first distance from the rotational axis, and a second row of the at least two rows is arranged at a second distance from the rotational axis greater than the first distance. A pitch bearing for a wind turbine is also disclosed.

Abstract: The present invention relates to a slip ring assembly for providing electricity to a rotor which is able to rotate in relation to a stator in a generator or an electrical motor, the slip ring assembly being in connection with an encoder. The slip ring assembly includes a slip ring unit having at least one first slip ring, and an encoder shaft holder connected to the slip ring unit and in which holder an encoder shaft is situated. The encoder shaft holder is made from an electrically insulating material for providing an electrical insulation between the slip ring unit and the encoder.

Abstract: Wind turbine blade includes a first blade part and a second blade part, the blade parts being bonded by bonding means forming a bond. To reduce peel stresses of the bond and reduce the risk of crack formation, an edge portion of the bond is covered by a low elastic modulus adhesive joint bridging a gap between the first blade part and the second blade part.

Abstract: A system for monitoring the quality of maintenance performed on a wind turbine. A restoration factor is used to determine the quality of maintenance performed of the wind turbine. A restoration factor determined after a scheduled maintenance is compared to historical and comparative references to determine the quality of the maintenance performed on the wind turbine. Based upon these comparisons, maintenance of the wind turbine may be modified to increase the capacity of the wind turbine.

Abstract: A device for dispensing a heated liquid, such as a hot melt adhesive, which includes a dispenser body adapted to dispense the heated liquid, a solenoid valve, and a pneumatic section including a housing coupled between the solenoid valve and dispenser body. The pneumatic housing is formed from a thermally insulating material which may include a thermoplastic polymer such as polyphenylene sulfide (PPS) or a fluoroplastic polymer to reduce heat transfer from the dispenser body through the pneumatic housing thereby thermally insulating the solenoid valve.

Abstract: A device for transporting and processing foodstuffs, in particular meat, includes a feeding device, a grinder with an input and an outlet, and a drive element to drive cutting elements situated in a housing of the grinder. The cutting elements are situated in the housing of the grinder in such a way that the cutting elements can be removed from the housing of the grinder through the outlet by means of a force applied to the side of the input.

Abstract: A tensile testing machine has a jaw which includes a unitary ‘H’ section member having a cross piece and two uprights. The cross piece is mounted to a cantilever beam which is supported on said test machine and has force measuring elements. A pneumatic actuator applies tensile forces to the first ends of the jaw via strands to urge the first ends apart. When first ends of the uprights are urged apart, their oppositely disposed second ends are urged together to grip a sample deposit to be pulled off a substrate in a tensile test. In use, the jaws can be moved at speed, in the order of 500 mm/s to pull the deposit off of the substrate. The force required to pull the deposit off the substrate in this tensile test is measured by the force measuring elements on the beam.

Abstract: A wind turbine rotor blade root load sensor includes an insert secured within a root portion of a wind turbine rotor blade and including an internal bore. The sensor also includes a carrier member fixedly connected to the internal bore of the insert so that loads can be transmitted therebetween. The sensor further includes a sensing element supported by the carrier member within the internal bore of the insert. The sensing element is positioned to detect loads applied to the wind turbine rotor blade and transferred through the insert and the carrier member.