Noise reduction structure for wind turbine generator set blades, blades and wind turbine generator set

Abstract

The invention discloses a noise reduction structure for wind turbine generator set blades, the blades and a wind turbine generator set. The noise reduction structure comprises connecting sleeves and tail edge parts connected to the connecting sleeves, and the connecting sleeves can be arranged on blade bodies of the blades from blade tips of the blade bodies of the blades in a sleeving mode, and are matched with shapes of the blade bodies wholly. According to the fact that when the noise reduction structure is used for the blades, tail edges can be replaced timely when being damaged, the costfor replacing the blades is reduced accordingly.

Description

technical field [0001] The invention belongs to the technical field of wind power generators, and in particular relates to a noise reduction structure for a blade of a wind power generator, a blade with the noise reduction structure and a wind power generator with the blade. Background technique [0002] With the rapid development of wind power, the installed capacity is getting bigger and bigger, and the blades are getting longer and longer. At the beginning of the development of wind power, the installed capacity was mainly in relatively remote areas, such as Inner Mongolia, Northwest, Northeast and other areas. There are relatively few requirements; and with the development of wind power, the installed capacity in the southeast coast and southern regions is increasing year by year, and the newly added wind turbines are relatively close to residential areas or breeding areas, so relatively high requirements are put forward for noise. [0003] Since the production of the bl...

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Problems solved by technology

[0003] Since the production of the blade depends on the blade mold (mainly the female mold), and the blade has a slender shape, the manufacturing precision is low. Both lead to relatively high noise, and subsequent installations such as sawtooth trailing edge are used for noise reduction. The reliability is relatively low, and it is easy to fall off after a long time of use.

[0004] In addition, considering the particularity of the blade, that is, the investment cost of the mold is high, and its shape cannot be changed after the production and processing are completed. If additional accessories need to be installed, they can only be installed on the surface of the blade. The installed accessories are affected by their installation reliability. For example, the service life of the sawtooth trailing edge or vortex generator connected by glue connection is basically 2-3 years, and reinstallation after failure will take time and labor, which will affect the income

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