Sectional wind power generation blade with interchangeability

Abstract

The invention relates to a sectional wind power generation blade with interchangeability, which is used for solving the problem that a large wind power generation blade is difficult in manufacturing, transportation and installation. The sectional wind power generation blade with the interchangeability comprises a first blade section, a first metal connection component, a second metal connection component, a second blade section and a maintenance cover plate, wherein the first blade section and the first metal connection component are of an integrated structure, the right end of the first metal connection component and the left end of the second metal connection component are assembled in a matching manner, the second metal connection component and the second blade section are of an integrated structure, and the maintenance cover plate is arranged at the assembled position of the first metal connection component and the second metal connection component. According to the sectional wind power generation blade with the interchangeability, the manufacturing difficulty of the large wind power generation blade and the transportation cost are reduced, the assembly efficiency of the sectional wind power generation blade is improved, and meanwhile the maintenance cost of the sectional wind power generation blade is saved.

Description

technical field [0001] The invention relates to a blade for wind power generation, in particular to a connection structure for a segmented blade for wind power generation, and belongs to the technical field of wind power generation. Background technique [0002] With the rapid development of industrialization and modernization, people's demand for energy is also growing rapidly. In contrast, the reserves of fossil energy such as coal, oil and natural gas are decreasing day by day, and there are serious environmental pollution problems in the process of fossil energy consumption. In recent years, wind power has developed rapidly in countries all over the world due to its advantages of environmental protection, safety and renewability. In 2010, my country's total installed capacity of wind power surpassed that of the United States, becoming the largest wind power country in terms of installed capacity. [0003] At present, the enlargement of wind turbines has become a trend in...

AI Technical Summary

Problems solved by technology

However, the above-mentioned technical scheme also has the following defects: 1. The exposed connectors, connecting bolts and nuts outside the blade affect the aerodynamic shape of the blade, thereby affecting the aerodynamic characteristics of the blade; Rust under the action of sun and rain, which affects the connection strength of the blade; 3. The connection between the upper and lower sections of the blade is not positioned correctly, which increases the installation error; 4. The force of the connecting bolt is mainly due to shear, which can withstand Stress is highly constrained

However, the above-mentioned technical solution also has the following disadvantages: 1. The on-site installation of the blades requires tooling to adjust the position of the rebar, and the positioning accuracy is not guaranteed and the efficiency is low; The corresponding molds are pasted on site to make the shape of the connecting part, and the installation efficiency is low; 3. Once the blade is partially damaged, the upper and lower sections of the blade cannot be replaced separately, and the blade will be scrapped as a whole, which is not conducive to the maintenance of the blade, which increases the maintenance and repair cost

[0006] To sum up, the existing segmented blades have technical problems such as complex blade connection structure, poor interchangeability, low blade positioning accuracy and repeat positioning accuracy, low installation efficiency, and failure to ensure reliable operation of the blades.

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