Device and method for rotating rotor of wind turbine generator system
A technology for wind turbines and rotors, which is applied in the assembly of wind turbines, wind turbines, and wind power generation, etc., can solve the problems of generator structure deformation, damage to the generator structure, affecting the use and work of wind turbines, etc. Service life and safety of use, the effect of eliminating structural deformation
Active Publication Date: 2017-05-31
JIANGSU GOLDWIND SCI & TECH CO LTD
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Problems solved by technology
[0007] In the prior art, when the hydraulic cylinder 1 is used to drive the wheel hub 2 to rotate, deformation of the generator structure often occurs, and in severe cases, the structure of the generator is damaged, which seriously affects the use and work of the wind turbine.
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Embodiment Construction
[0059] Aiming at the technical problem of deformation of the generator structure when the rotating device drives the wheel hub to rotate in the prior art, the present invention has carried out in-depth research and found that the force between the hydraulic cylinder and the pin shaft in the prior art rotating device is as follows: figure 2 As shown, this force not only produces the driving force Fx that pushes the hub to rotate, but also produces the radial force Fy. The radial force Fy acts on the generator, which easily causes the internal stress of the generator, and is the main factor causing the structural deformation of the generator.
[0060] On the basis of the above-mentioned research findings, this paper proposes a technical solution to solve the above-mentioned technical problems in the prior art, as follows.
[0061] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be furt...
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The invention discloses a device and method for rotating a rotor of a wind turbine generator system. The device comprises at least one rotating unit, wherein the rotating unit comprises a main telescopic cylinder and an auxiliary telescopic cylinder. In the rotating process of the device for rotating the rotor of the wind turbine generator system driving the rotor to rotate, the auxiliary telescopic cylinder applies radial force on the rotor, and the radial force is controlled in real time to be opposite to the direction of the force of the main telescopic cylinder applied on the rotor in the radial direction, so that the radial force applied on the rotor by the main telescopic cylinder in the process of driving the rotor can be relatively reduced or completely offset, the structure deformation of an electric generator can be weakened or eliminated, an internal gap inside the electric generator is maintained in the predetermined size, damage to the electric generator due to rotating of the rotor is avoided, the service life of the electric generator is prolonged, and the using safety of the electric generator is improved.
Description
technical field [0001] The invention relates to the technical field of wind power generation, in particular to a device and method for rotating a rotor of a wind power generating set. Background technique [0002] A wind turbine is an electrical device that converts wind energy into mechanical energy and mechanical energy into electrical energy. The principle of wind power generation is to use the wind force to drive the blades of the windmill to rotate to promote the generator to generate electricity. [0003] A wind turbine includes main components such as a nacelle, a generator, and blades. The generator includes a rotor and a stator. The main shaft of the rotor is provided with a hub. The blades are installed on the hub of the rotor to receive wind force and drive the rotor to rotate, which in turn drives the generator rotor to rotate. The stator winding of the generator cuts the magnetic field lines to generate electric energy. [0004] The number of blades is at leas...
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IPC IPC(8): F03D13/10F03D80/50
CPCY02E10/72
Inventor 陈金龙张竹张新刚
Owner JIANGSU GOLDWIND SCI & TECH CO LTD