Blade tip improvement or repairing method of wind turbine blade and blade tip lengthened section structure

Abstract

The invention discloses a blade tip improvement or repairing method of a wind turbine blade. The blade tip improvement or repairing method includes the following steps that a blade tip lengthened section divided into two parts of shell bodies in the axial direction is fixed to the blade; additional reinforcement is carried out on the splicing area of the two parts of shell bodies, so that a new blade tip is formed. The blade tip of the original blade is lengthened or the damaged blade tip of the original blade is repaired, so that the sweeping area of the blade is increased, the generation efficiency of a wind turbine is improved, the economic benefits are obvious, the implementation is simple, and the improvement cost is low. The invention further discloses a blade tip lengthened section structure of the wind turbine blade for improving or repairing the original blade tip. The blade tip lengthened section structure comprises two parts of shell bodies divided in the axial direction. The two parts of shell bodies include the front edge shell body and the rear edge shell body which are spliced and bonded into a whole, and a new blade tip is formed. Or the two parts of shell bodies include the windward side shell body and the leeward side shell body which are spliced and bonded into a whole, and a new blade tip is formed.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to a blade tip modification or repair method of a wind turbine blade and a blade tip lengthened section structure. Background technique [0002] The power generation efficiency of wind turbines is an important factor to be considered in each wind farm. How to improve the power generation efficiency of each wind turbine as much as possible is a problem that needs to be considered when building a wind farm. [0003] Blades are the key components of wind turbines, and their swept area directly affects the power generation efficiency of wind turbines. [0004] In practical applications, although many factors affecting the power generation efficiency of wind turbines are fully considered when building wind farms, for example, with the rapid development of the wind power industry, the blades that were put into operation in the early days, due to their short length, lead to ...

AI Technical Summary

Problems solved by technology

[0004] In practical applications, although many factors that affect the power generation efficiency of wind turbines are fully considered when building wind farms, for example, with the rapid development of the wind power industry, the blades that were put into operation early, due to their short length, lead to The power generation efficiency is not good, and there is a need for lengthening transformation

At present, the method of lengthening the root section of the blade is usually used to lengthen the blade. This method involves a crane entering the site, and the transformation cost is high

[0005] On the other hand, due to transportation reasons or natural disasters (such as lightning strikes, etc.), the tip of the blade is likely to be severely damaged, and there is a need to replace the tip, otherwise the blade needs to be scrapped

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