Wind power generating device, tower tube and method for restraining tower shadow effect of tower tube

Abstract

The invention discloses a wind power generating device, a tower tube and a method for restraining the tower shadow effect of the tower tube. The tower tube is provided with suction through holes running through the inner side and the outer side of the circumferential wall of the tower tube and distributed in the circumferential direction of the tower tube. The tower tube is further provided with a suction device which can suck the suction through holes from outside to inside. By means of the tower tube and the method, when the suction through holes of the windward side are sucked, the adverse effects of the tower shadow effect can be weakened or eliminated, the service life of a pitch bearing can be prolonged, noise can be reduced, and the wind energy utilization coefficient can be improved. When the suction through holes in the streaming disengagement direction are sucked, the vortex-induced vibration can be restrained; meanwhile, the suction force can be freely adjusted according to actual conditions during sucking, and higher flexibility is achieved; when the suction gas flow is discharged to the inside, the effect of heat exchange cooling and the effect of preventing external rainwater, dust and the like from entering a wind deflector or a hub can also be achieved.

Description

technical field [0001] The invention relates to the technical field of tower tubes, in particular to a wind power generation device, a tower tube and a method for suppressing the tower shadow effect of the tower tube. Background technique [0002] Please refer to Picture 1-1 , Picture 1-1 Schematic diagram of wind power generation equipment. [0003] The foundation of the wind power generation equipment is the tower tube 10, which acts as a load bearing and enclosure for the whole machine. As an example, take a circular section tower tube 10 as an example. The tower tube 10 can be a steel tube, or a steel tube and a steel tube. Combination of concrete towers. The tower 10 carries the nacelle 30 of the wind power generation equipment, the generator and the wind turbine 20 . The wind power generating set composed of the wind turbine 20 and the generator completes the task of obtaining wind energy and converting it into electrical energy. The converted electric energy is t...

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Problems solved by technology

[0031] The wind speed of the air flow will change. If the characteristic parameters (pitch, height) of the helix 10a (or spiral plate) are processed to change according to the change of the wind speed of the air flow, the corresponding manufacturing cost and maintenance cost will increase significantly;

[0032] The coverage of the helix 10a (or spiral plate) on the surface of the tower will affect the effect of suppressing lateral vibration. When the coverage reaches (or exceeds) 50%, the effect of suppressing lateral vibration reaches the best, but at this time the helix 10a (or Spiral plate) and the wind-induced noise of air flow have a serious impact on natural environment organisms, which are not allowed by ecological regulations;

[0033] The installation helix 10a (or spiral plate) is only used in the hoisting stage, which reduces the significance and loses a lot. Considering the long-term operation and use, it is difficult to adapt to the change of wind speed and correspond to different wind speeds due to the requirements of device cost and environmental protection, that is: It is difficult to function under different wind speeds

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