Abstract: A consumption meter, e.g. a water or heat meter, for measuring a flow rate of a fluid supplied in a flow tube. First and second ultrasonic transducers are arranged at the flow tube for transmitting and receiving ultrasonic signals transmitted through the fluid and operated by a flow measurement sub-circuit for generating a signal indicative of the flow rate of the fluid. A noise measurement sub-circuit operates a sensor arranged at the flow tube for detection of acoustic signals of the flow tube, and being arranged to generate a signal indicative of a noise level of the flow tube accordingly. This sensor may comprise a separate transducer, or the sensor may be constituted by one or both of the first and second ultrasonic transducers. The consumption meter may communicate data representative of the noise level via a communication module along with data consumed amount of water, heat etc.

Abstract: Real-time two-way communication between a user immersed in a virtual reality (VR) environment and another party who is not in the VR environment. The sequence of video frames being presented to the VR user on, e.g., a head mounted display, i.e., the VR user's “field of view” in the VR environment, is shown to a guest user on their computing device. Simultaneously, video from a camera in a guest user computing device is shown to the VR user in a window in the VR environment. Audio is also exchanged in real time between the VR user and guest user by use of a microphone and loudspeaker in both the VR system and the guest user computing device. The VR user's system can also support both rotational and translational user movement thus properly changing the VR user's apparent distance from objects displayed in the VR environment.

Abstract: Real-time two-way communication between a user immersed in a virtual reality (VR) environment and another party who is not in the VR environment. The sequence of video frames being presented to the VR user on, e.g., a head mounted display, i.e., the VR user's “field of view” in the VR environment, is shown to a guest user on their computing device. Simultaneously, video from a camera in a guest user computing device is shown to the VR user in a window in the VR environment. Audio is also exchanged in real time between the VR user and guest user by use of a microphone and loudspeaker in both the VR system and the guest user computing device. The VR user's system can also support both rotational and translational user movement thus properly changing the VR user's apparent distance from objects displayed in the VR environment.

Abstract: A wind turbine and a method for assembling a wind turbine is disclosed. The wind turbine, including a first portion, a second portion which is connectable to the first portion, and a spring element which is connected to the first portion and which protrudes therefrom, wherein the spring element configured to guide the second portion towards the first portion and, and wherein the spring element is configured to be deformed while the second portion is guided towards the first portion. Assembly operations are simplified since an elastic guiding system is provided which reduces movements between portions to be connected. In particular, a duration of assembly operations may be reduced.

Abstract: Provided is a blade mounting arrangement at the interface between a hub and a rotor blade of a wind turbine, which blade mounting arrangement includes at least an annular bearing including a stationary part mounted to the hub and a rotating part mounted to the root end of the blade; and a reinforcing ring arranged between the bearing rotating part and the root end of the blade, which reinforcing ring includes a cylindrical body portion shaped as an extension of the root end of the blade. A wind turbine including a hub and a number of blades mounted to the hub, and with such a blade mounting arrangement at the interface between the hub and each rotor blade is also provided. A method of realizing an interface between a hub and a rotor blade of a wind turbine is also provided.

Abstract: Provided is a blade mounting arrangement at the interface between a hub and a rotor blade of a wind turbine, which blade mounting arrangement includes at least an annular bearing including a stationary part mounted to the hub and a rotating part mounted to the root end of the blade; and a reinforcing ring arranged between the bearing rotating part and the root end of the blade, which reinforcing ring includes a cylindrical body portion shaped as an extension of the root end of the blade. A wind turbine including a hub and a number of blades mounted to the hub, and with such a blade mounting arrangement at the interface between the hub and each rotor blade is also provided. A method of realizing an interface between a hub and a rotor blade of a wind turbine is also provided.

Abstract: A wind turbine and a method for assembling a wind turbine is disclosed. The wind turbine, including a first portion, a second portion which is connectable to the first portion, and a spring element which is connected to the first portion and which protrudes therefrom, wherein the spring element configured to guide the second portion towards the first portion and, and wherein the spring element is configured to be deformed while the second portion is guided towards the first portion. Assembly operations are simplified since an elastic guiding system is provided which reduces movements between portions to be connected. In particular, a duration of assembly operations may be reduced.

Abstract: A method of handling the pitch bearing unit of a rotor blade mounted to the hub of a wind turbine, the method including the steps of providing an extension assembly at the interface between the rotor blade and the hub, moving the rotor blade outward from the hub by means of the extension assembly to open a gap large enough to accommodate the pitch bearing unit while maintaining a connection between the rotor blade and the hub, and removing the pitch bearing unit through the gap.

Abstract: A hub for a wind turbine which includes a hub body having a first blade bearing flange, a second blade bearing flange and a main bearing flange, and a stiffening structure stiffening a first portion of the hub body, wherein the first portion is arranged adjacent to the main bearing flange and between the first blade bearing flange and the second blade bearing flange. This hub has the advantage that a stiffness (or a rigidity) of the hub body can be increased close to the main bearing flange.

Abstract: A wind turbine, including a hub, a blade, a blade bearing which is connected to the hub and which enables a rotational movement of the blade relative to the hub, and an adjustment device for adjusting a pitch angle of the blade, wherein the adjustment device includes at least one actuator and wherein an effective direction of an adjustment force of the at least one actuator when adjusting the pitch angle of the blade is tilted in an angle relative to a bearing plane of the blade bearing. One advantage of the wind turbine is that the adjustment force for adjusting the pitch angle is transmitted directly into the blade bearing or the bearing plane. Further, an offset of the attacking point of the adjustment force can be reduced or completely avoided.

Abstract: A rotor of a wind turbine is disclosed with a pitch system locking arrangement to lock the position of a wind turbine rotor blade. A rotor comprises a rotor hub and a rotor blade, whereby the rotor blade is connected to the hub via a bearing, to be rotatable in respect to the hub in a pitch movement. The rotor blade comprises a root section, and the root section comprises a plate, that at least partially covers the cross section of the rotor blade. A certain predetermined rotational position of the rotor blade with respect to the hub is a locked position. The hub includes a locking pawl. The plate comprises an opening, and the locking pawl is at least partially located in the opening of the plate, when the rotor blade is in the locked position.

Abstract: A reinforced pitch bearing of a wind turbine having a first reinforcement plate and a second reinforcement plate is provided. The pitch bearing includes an outer bearing ring and an inner bearing ring, whereby both bearing rings are arranged coaxially to each other, thus comprising a common axis of symmetry. The first reinforcement plate is arranged at a first axial end of the pitch and the second reinforcement plate is arranged at a second axial end of the pitch bearing. The reinforcement plates are arranged substantially parallel to each other and the pitch bearing includes further means for reinforcement arranged in between the first reinforcement plate and the second reinforcement plate. The invention also relates to a wind turbine having at least one rotor blade and at least one pitch bearing, pivotably connecting the rotor with a hub of the wind turbine.

Abstract: A wind turbine is provided, including a hub, a blade shaft which is connected to the hub, a rotor blade which is connected to the blade shaft, a fixed bearing arrangement which is arranged at a blade end) of the blade shaft, and a floating bearing arrangement which is arranged at a hub end of the blade shaft, wherein the bearing arrangements enable a rotational movement of the rotor blade relative to the blade shaft. One advantage of the wind turbine including the bearing arrangements is that a better distribution of the loads is achieved. Further, the serviceability is better compared to bearings with rolling elements.

Abstract: A wind turbine, including a hub, a blade, a blade bearing which is connected to the hub and which enables a rotational movement of the blade relative to the hub, and an adjustment device for adjusting a pitch angle of the blade, wherein the adjustment device includes at least one actuator and wherein an effective direction of an adjustment force of the at least one actuator when adjusting the pitch angle of the blade is tilted in an angle relative to a bearing plane of the blade bearing. One advantage of the wind turbine is that the adjustment force for adjusting the pitch angle is transmitted directly into the blade bearing or the bearing plane. Further, an offset of the attacking point of the adjustment force can be reduced or completely avoided.

Abstract: A method of handling the pitch bearing unit of a rotor blade mounted to the hub of a wind turbine, the method including the steps of providing an extension assembly at the interface between the rotor blade and the hub, moving the rotor blade outward from the hub by means of the extension assembly to open a gap large enough to accommodate the pitch bearing unit while maintaining a connection between the rotor blade and the hub, and removing the pitch bearing unit through the gap.

Abstract: A main bearing of a wind turbine, wherein the main bearing is reinforced by a reinforcement element which includes a cavity to reduce a torsional deformation of the main bearing, is provided. A wind turbine for generating electricity including such a main bearing is also provided.

Abstract: A pitch system locking arrangement is provided. A rotor of a wind turbine is disclosed with a pitch system locking arrangement to lock the position of a wind turbine rotor blade. A rotor comprises a rotor hub and a rotor blade, whereby the rotor blade is connected to the hub via a bearing, to be rotatable in respect to the hub in a pitch movement. The rotor blade comprises a root section, and the root section comprises a plate, that at least partially covers the cross section of the rotor blade. A certain predetermined rotational position of the rotor blade in respect to the hub 1 is a locked position. The hub includes a locking pawl. The plate comprises an opening, and the locking pawl is at least partially located in the opening of the plate, when the rotor blade is in the locked position.

Abstract: A reinforced pitch bearing of a wind turbine having a first reinforcement plate and a second reinforcement plate is provided. The pitch bearing includes an outer bearing ring and an inner bearing ring, whereby both bearing rings are arranged coaxially to each other, thus comprising a common axis of symmetry. The first reinforcement plate is arranged at a first axial end of the pitch and the second reinforcement plate is arranged at a second axial end of the pitch bearing. The reinforcement plates are arranged substantially parallel to each other and the pitch bearing includes further means for reinforcement arranged in between the first reinforcement plate and the second reinforcement plate. The invention also relates to a wind turbine having at least one rotor blade and at least one pitch bearing, pivotably connecting the rotor with a hub of the wind turbine.

Abstract: A bolted connection for connecting two wind turbine components by bolts is proposed. Each of the bolts has a shaft and a plurality of threads. A transition region between the bolt shaft and the bolt threads is tapered. The bolted connection can be used to connect a rotor blade to a blade bearing of a wind turbine.

Abstract: Disclosed is an indicator apparatus for indicating a displacement of two segments, in particular two wall segments of a wind turbine tower wall, relative to each other, the indicator apparatus comprising: a body; a first connection element mounted at the body and adapted to be connected to a first segment; and a second connection element mounted at the body and adapted to be connected to a second segment, wherein the body is configured to generate information indicative of a relative displacement of the first connection element and the second connection element.