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.

Provided is a wind turbine including: a tower, a nacelle mounted on the tower, an electrical generator housed in the nacelle, a wind rotor rotatably coupled to the nacelle for rotating about a rotational axis and having at least one rotatable blade, two rotating shafts for connecting the wind rotor to the electrical generator, a shaft connector for rigidly connecting the two rotating shafts. The shaft connector includes: a hollow body, at least an inner flange protruding from the hollow body towards an axis of rotation of the shaft connector, the inner flange being connectable to one of the two rotating shafts, at least one hole provided on the hollow body for accessing the inner flange.

A convector for cooling a microprocessor includes a volute-shaped housing, a stator, and a rotor, and can be mounted to a CPU board of a computing device for thermal coupling with the microprocessor. The volute-shaped housing of the convector encapsulates the stator and the rotor, and has a radially outer casing which defines a single exit port for guiding a fluid out of the housing. The stator has a plurality of plates configured to conduct heat. The rotor has a plurality of disks and a shaft extending longitudinally along the housing. Together, the housing, the stator, and the rotor define a spiral flow path through the volute-shaped housing, in both radially outward and longitudinal directions, to the single exit port. A motor may be provided to impart rotational motion to the rotor.

A power transmission system for a wind turbine includes a main shaft configured to be driven by the rotor about a main axis, a support structure including at least one bearing supporting the main shaft for rotation about the main axis, and a gearbox having a gearbox housing rigidly coupled to the support structure and a gearbox input member coupled to the main shaft. The gearbox housing supports the gearbox input member for rotation about the main axis, and the gearbox input member is coupled to the main shaft with a translational degree of freedom along the main axis and rotational degrees of freedom about axes perpendicular to the main axis. The main shaft is coupled to the gearbox input member by a flexible coupling positioned at least partially within the main shaft. The flexible coupling may be positioned entirely within the main shaft.

A convector includes a rotor having a shaft extending along an axis of rotation, and a plurality of discs offset from one another along the axis of rotation and mechanically coupled to and rotatable with the shaft. The convector also includes a stator having a plurality of plates offset from one another along the axis of the shaft. Each plate of the plurality of plates defines a through-hole configured to receive the shaft and an opening configured to receive a corresponding disc of the plurality of discs. Rotation of the shaft causes each disc to rotate at least partially within the opening defined by the corresponding plate, and relative to the corresponding plate.

A ram air turbine is presented that includes a turbine having a blade and a turbine shaft, a strut removably coupled to the turbine, wherein the strut has a gearbox section and a drive section, a turbine shaft with a bevel gear oriented perpendicularly to the turbine shaft and positioned within the gearbox section of the strut, a driveshaft coupled to the generator and positioned within the drive section of the strut, and a pinion gear that engages with the bevel gear, wherein the pinion gear is secured to the driveshaft by a spanner nut, wherein the pinion gear utilizes a key configured to interact with the keyed joint of the driveshaft. The pinion gear is supported by a pinion bearing that may be press fit onto the pinion gear and by one of the generator bearings.

A power generating apparatus is provided which has a simple configuration with excellent maintainability and power generation efficiency. A power generating apparatus 100 includes an inlet pipe 101, a rotational coupling unit 102, a generator 110, and a rotating blade 120. The inlet pipe 101 is connected to a supply source of a liquid WK and guides the liquid WK to the rotational coupling unit 102. The rotational coupling unit 102 rotatably couples an input shaft 112 of the generator 110 to the inlet pipe 101. The input shaft 112 configures a rotor in the generator 110 and is formed into a pipe that conveys the liquid WK to a base pipe 121 of the rotating blade 120 to function as piping. The generator 110 generates electric power on the basis of rotary motion of the input shaft 112. The rotating blade 120 includes two arm pipes 123 on an outer side in a radial direction of the base pipe 121 formed into a pipe, and is rotationally driven by jetting the liquid WK along a circumferential direction of the base pipe 121 through a discharge tube 124 provided at a distal end portion of each of the arm pipes 123.

A main shaft assembly of a wind turbine and method for manufacturing the same are provided. Accordingly, the main shaft assembly includes a structural/shaft body defining a cavity therein. The shaft body is configured to transmit a load of the wind turbine developed in response to the wind. An inner body is located within the cavity. The inner body is non-loadbearing with respect to the load. At least one sensor is coupled to the inner body and positioned within the cavity for detecting a deflection of the shaft body in response to the load.

A power generating apparatus is provided which has a simple configuration with excellent maintainability and power generation efficiency. A power generating apparatus 100 includes an inlet pipe 101, a rotational coupling unit 102, a generator 110, and a rotating blade 120. The inlet pipe 101 is connected to a supply source of a liquid WK and guides the liquid WK to the rotational coupling unit 102. The rotational coupling unit 102 rotatably couples an input shaft 112 of the generator 110 to the inlet pipe 101. The input shaft 112 configures a rotor in the generator 110 and is formed into a pipe that conveys the liquid WK to a base pipe 121 of the rotating blade 120 to function as piping. The generator 110 generates electric power on the basis of rotary motion of the input shaft 112. The rotating blade 120 includes two arm pipes 123 on an outer side in a radial direction of the base pipe 121 formed into a pipe, and is rotationally driven by jetting the liquid WK along a circumferential direction of the base pipe 121 through a discharge tube 124 provided at a distal end portion of each of the arm pipes 123.

There is provided a method (100) of installing a pitch tube (27) into an electrical power generator (24) for a wind turbine, the method comprising: installing (105a) the pitch tube (27) so that it is coaxial with a rotational axis (R) of the generator (24); supporting (105b) a bearing arrangement (50) associated with the pitch tube (27) at an end of the generator (24) using one or more primary supports (52), wherein each of the primary supports (52) comprises a first end (58) connected to the bearing arrangement (50) and a second end (60) connected to a component (32) associated with a rotating reference frame of the generator (24); and supporting (110) the bearing arrangement (50) using one or more secondary supports (54), wherein each of the secondary supports (54) comprises a first end (62) connected to the bearing arrangement (50) and a second end (64) connected to a component (42) associated with a stationary reference frame of the generator (24).