A truss type modular wind power blade

Abstract

The present invention relates to the technical field of wind power generation equipment, in particular to a truss-type modular wind power blade, comprising: a blade truss frame, a leading edge shell module and a trailing edge shell module, the blade truss frame includes a main girder, and along the length of the main girder A number of front-edge support trusses and several rear-edge support trusses are distributed in staggered directions. A rear-edge beam and a rear-edge small I-beam are arranged on one side of the rear-edge truss; the front-edge shell module includes a The PS leading edge shell and the SS leading edge shell on the leeward side; the trailing edge shell module includes the PS trailing edge shell on the windward side of the trailing edge support frame, and the SS trailing edge shell on the leeward side; the trailing edge The shell module is connected to the main girder through the front and rear edge support trusses. The front and rear edge support trusses are designed at a certain angle to the main girder. The internal force carried by the main girder is transmitted to the truss and released to the front and rear edges, and finally the force is transmitted to the blade root. An overall stable structure is formed, which improves the overall stability of the wind turbine blades.

Description

technical field [0001] The invention relates to the technical field of wind power generation equipment, in particular to a truss-type modular wind power blade. Background technique [0002] The research on wind power blades at home and abroad has been constantly exploring, especially in foreign countries, many researches have been done on modular blades. The technical characteristics of the modular blade structure solutions developed by the industry at present, the modular structure is designed along the axial direction, and the cross-section is There is a problem of sudden stiffness in the position, the stress at the connection position is complex, and the assembly is also complicated, which leads to the failure of the connection position. At the same time, the segmental connection position is the auxiliary plug of the mechanical connection, and the connection reliability is not strong, which leads to the poor overall stability of the wind turbine blade, which seriously affe...

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Problems solved by technology

[0002] The research on wind power blades at home and abroad has been constantly exploring, especially foreign countries have done many researches on modular blades. At present, the technical characteristics of the modular blade structure scheme developed by the industry, the modular structure is designed along the axial direction. There is a problem of sudden change in stiffness at the position, the stress at the connection position is complex, and the assembly is also relatively complicated, which leads to the failure of the connection position. At the same time, the segmental connection position is mechanically connected to assist plugging, and the connection reliability is not strong, which leads to poor overall stability of the wind turbine blades and seriously affects The service life of wind turbine blades

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