摘要:
The invention relates to a device for changing the angle of inclination (13) in wind turbines, which device is formed by a connection part (4) having a peripheral rolling ring (10) on which three support points (11), which support a bed (6) where the power train is supported, roll, thereby permitting the orientation of the yaw angle. At least one line of pistons (14) and their corresponding cylinders (15) are provided on each of the rolling support points (11), anchored to the bed (6) via a plate (16) for each group of actuators, thereby integrating the yaw and tilt actuation system. When the cylinder (15) pushes or retracts the piston (14) and the piston (14) extends or retracts the ringshaped connection part (4) (the fixed part), and the bed (6) that supports the power train (the mobile part) displacing a certain angle ±, the piston (14), which is articulated (17) in the lower end thereof, progressively inclines in proportion to the angle of inclination ±. The degree of inclination reached, for a leeward wind turbine, is based on the measurements of respective anemometers (5) established in the front portion of the nacelle (3).
摘要:
Wind turbine drive train with a nacelle (3) as much compact as possible in a tower (2) with a big diameter which allows to embed the generator (6) inside and reduce the loads in the supports (10) of the rotation system and in the tower (2). The mainframe (5) of the nacelle (3) has a triangular shape based on structural frames or ribs, taking profit of the big reaction arm with the most compact solution. The generator (6) is integrated in this mainframe (5) and partially crosses the connection piece (4) of the tower (2). The rotation system is made by individual supports in a continuous raceway and the traction elements provokes the rotation of the nacelle (3) around the tower (2) without the need of the usual geared pinion - zip systems, using pneumatic wheels (20) which roll by the raceway made by the rotation ring (9) with inverted T shape with one or two circular sections on the top of its profile.
摘要:
The invention relates to a system for connecting the lattice tower (2) and the gondola (3) of a wind turbine having a horizontal axis, consisting of a cylindrical ring piece (4) that has high flexural rigidity and enables direct transition between the gondola yaw system (3) and the vertical members of the lattice tower (2). The connecting piece (4) consists of two rings (13 and 14) joined together with outer vertical plates (12) and lower (16) and top (17) horizontal plates forming the faces (15 and 18) which internally have transverse (20), central (19) and auxiliary (21) ribs joined together and with the outer vertical plates (12) through cylindrical joints (24). The central ribs (19) form a large polygonal hole (22) at the center thereof depending on the number of legs that are part of the lattice tower (2). The connection of the part (4) to a straight tower having three columns (2) is an optimal solution, enabling: reduction of column tower loads by increasing torque arm, load reduction on the frame and Yaw for the same reason, load reduction on the tower due to the embedded generator in the annular gap, tower cost reduction by reducing the necessary elements and total weight and reducing transport costs due to the modularity of the solution.
摘要:
The invention relates to a device for changing the angle of inclination (13) in wind turbines, which device is formed by a connection part (4) having a peripheral rolling ring (10) on which three support points (11), which support a bed (6) where the power train is supported, roll, thereby permitting the orientation of the yaw angle. At least one line of pistons (14) and their corresponding cylinders (15) are provided on each of the rolling support points (11), anchored to the bed (6) via a plate (16) for each group of actuators, thereby integrating the yaw and tilt actuation system. When the cylinder (15) pushes or retracts the piston (14) and the piston (14) extends or retracts the ringshaped connection part (4) (the fixed part), and the bed (6) that supports the power train (the mobile part) displacing a certain angle ±, the piston (14), which is articulated (17) in the lower end thereof, progressively inclines in proportion to the angle of inclination ±. The degree of inclination reached, for a leeward wind turbine, is based on the measurements of respective anemometers (5) established in the front portion of the nacelle (3).