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Wind power blade, manufacturing method thereof and wind power generator

A technology of wind turbines and wind turbine blades, which is applied to wind turbines, wind power generation, engines, etc., can solve problems such as fracture, easy deformation, and impact on the safety of wind turbines, and achieve reduced diameter, weight, and overall reduction. The effect of machine head weight

Pending Publication Date: 2022-04-12
SHANGHAI ELECTRIC WIND POWER GRP CO LTD
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AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the safety defect of the wind turbine generator that the bolts connecting the blades of the wind turbine and the hub are easily deformed and broken due to excessive load during the use of the wind turbine generator, and provide A kind of wind power blade and its manufacturing method, wind power generator

Method used

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  • Wind power blade, manufacturing method thereof and wind power generator
  • Wind power blade, manufacturing method thereof and wind power generator
  • Wind power blade, manufacturing method thereof and wind power generator

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Embodiment Construction

[0056] The present invention is further illustrated below by means of examples, but the present invention is not therefore limited to the scope of the following examples.

[0057] An embodiment of the present invention provides a wind turbine blade, such as figure 1 , figure 2 , Figure 4 and Figure 5 shown. The wind turbine blade includes a blade root 1 , first connecting holes 11 are opened on the end face of the blade root 1 connected to the hub of the wind generator, and the first connecting holes 11 are distributed along the circumferential direction of the blade root 1 . The outer peripheral surface of the blade root 1 is provided with a cylindrical hole 12 communicating with the first connecting hole 11, and the cylindrical hole 12 is provided correspondingly to the first connecting hole 11. shaped pieces. The first connecting hole 11 is used for installing the first connecting piece, one end of the first connecting piece is connected with the cylindrical piece, ...

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Abstract

The invention discloses a wind power blade and a manufacturing method thereof and a wind driven generator, the wind power blade comprises a blade root part, a first connecting hole is formed in the end face of one end, connected with a hub of the wind driven generator, of the blade root part, and the first connecting hole is distributed in the circumferential direction of the blade root part; a cylindrical hole communicated with the first connecting hole is formed in the peripheral face of the blade root part, a cylindrical piece is arranged in the cylindrical hole, the first connecting hole is used for installing a first connecting piece, one end of the first connecting piece is connected with the cylindrical piece, the other end of the first connecting piece is connected with a hub, and a protruding part is arranged on the side wall of the blade root part. A second connecting hole communicating with the cylindrical hole is formed in the end face of the end, facing the hub, of the protruding part and used for installing a second connecting piece. According to the wind power blade, the protruding parts with the second connecting holes are arranged, the number of connecting pieces between the wind power blade and the hub can be increased, the bearing capacity of the blade root part is improved, and the use safety of the wind power blade is further improved.

Description

technical field [0001] The invention relates to a wind power blade, a manufacturing method thereof, and a wind power generator. Background technique [0002] The current blade root bolts adopt a single-row bolt design, that is, a single row of bolt holes distributed along the circumferential direction is opened at the end of the blade root. The design length of wind turbine blades is getting longer and longer, the load on the blade root is also increasing, and the ultimate load and fatigue damage of the blade root bolts are increasing. Therefore, during the use of the wind turbine, the bolts are prone to deformation and breakage, which in turn affects the safety of the wind turbine. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the safety defect of the wind turbine generator that the bolts connecting the blades of the wind turbine and the hub are easily deformed and broken due to excessive load during the use...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D80/00B29C70/36
CPCY02E10/72Y02P70/50
Inventor 张振国
Owner SHANGHAI ELECTRIC WIND POWER GRP CO LTD
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