CN-224214292-U - Wind power blade with buckling-resistant prefabricated trailing edge structure

CN224214292UCN 224214292 UCN224214292 UCN 224214292UCN-224214292-U

Abstract

The utility model discloses a wind power blade with an anti-buckling prefabricated trailing edge structure, which comprises a blade body and the anti-buckling prefabricated trailing edge structure arranged on the trailing edge side of the blade body, wherein the anti-buckling prefabricated trailing edge structure comprises a plurality of anti-buckling prefabricated trailing edge sections which are arranged side by side along the direction of the extending direction of the blade, each anti-buckling prefabricated trailing edge section comprises a skin structure and a main body structure wrapped in the skin structure, the main body structure comprises a honeycomb core structure, glass fiber cloth, trailing edge glass fiber cloth, pressure surface UD cloth and suction surface UD cloth, the honeycomb core structure is wrapped by the glass fiber cloth to form a sandwich structure, the pressure surface UD cloth is paved on the pressure surface of the sandwich structure, the suction surface UD cloth is paved on the suction surface of the sandwich structure, and the trailing edge glass fiber cloth is paved on the outer surface of the trailing edge side of the sandwich structure. The utility model can effectively improve the rigidity of the rear edge of the blade, solve the buckling of the rear edge, effectively ensure the bonding quality of the rear edge area, reduce the production deviation and improve the reliability of the blade.

Inventors

Fu Wanbiao
ZHANG JING
HE XUE
ZHANG JUFANG
GU YUHUI

Assignees

广东明阳新能源材料科技有限公司

Dates

Publication Date: 20260508
Application Date: 20250704

Claims (8)

1. The wind power blade with the buckling-restrained prefabricated trailing edge structure is characterized by comprising a blade body and the buckling-restrained prefabricated trailing edge structure arranged on the trailing edge side of the blade body, wherein the buckling-restrained prefabricated trailing edge structure comprises a plurality of buckling-restrained prefabricated trailing edge sections which are arranged side by side along the direction of the extending direction of the blade, each buckling-restrained prefabricated trailing edge section comprises a skin structure and a main body structure wrapped inside the skin structure, the main body structure comprises a honeycomb core structure, glass fiber cloth, trailing edge glass fiber cloth, pressure surface UD cloth and suction surface UD cloth, the honeycomb core structure is wrapped by the glass fiber cloth to form a sandwich structure, the pressure surface UD cloth is paved on the pressure surface of the sandwich structure, the suction surface UD cloth is paved on the suction surface of the sandwich structure, and the rear edge glass fiber cloth is paved on the outer surface of the trailing edge side of the sandwich structure.
2. The wind power blade with the buckling restrained prefabricated trailing edge structure of claim 1, wherein the pressure surface UD cloth is multi-layered, the multi-layered pressure surface UD cloth is arranged in a staggered mode in the chord direction and the span direction of the blade, the suction surface UD cloth is multi-layered, and the multi-layered suction surface UD cloth is arranged in a staggered mode in the chord direction and the span direction of the blade.
3. A wind power blade with an anti-buckling prefabricated trailing edge structure according to claim 1, wherein the blade body comprises a pressure side shell, a suction side shell, a leading edge bonding layer, a pressure side trailing edge bonding layer, a suction side trailing edge bonding layer, a leading edge web and a trailing edge web, the pressure side shell and the leading edge side of the suction side shell are connected through the leading edge bonding layer, the trailing edge side of the pressure side shell is connected with the pressure side of the anti-buckling prefabricated trailing edge structure through the pressure side trailing edge bonding layer, the trailing edge side of the suction side shell is connected with the suction side of the anti-buckling prefabricated trailing edge structure through the suction side trailing edge bonding layer, a leading edge web is arranged in a leading edge area between the pressure side shell and the suction side shell, and a trailing edge web is arranged in a trailing edge area between the pressure side shell and the suction side shell.
4. A wind power blade with an anti-buckling prefabricated trailing edge structure according to claim 3, wherein the bonding interface of the pressure surface shell and the anti-buckling prefabricated trailing edge structure and the bonding interface of the suction surface shell and the anti-buckling prefabricated trailing edge structure are provided with slope structures for increasing bonding areas to ensure bonding quality.
5. The wind power blade with the buckling restrained prefabricated trailing edge structure according to claim 1, wherein the honeycomb core structure comprises a plurality of honeycomb cells which are arranged in an array mode, and the honeycomb cells are of a quadrilateral structure, a regular hexagon structure or a concave hexagon structure.
6. The wind power blade with the buckling restrained prefabricated trailing edge structure according to claim 5, wherein the inner cavity of the honeycomb chamber is filled with rubber.
7. The wind power blade with the buckling restrained prefabricated trailing edge structure of claim 1, wherein the thickness of the honeycomb core structure is changed in a gradient mode along the direction of the extending direction of the blade, and chamfers are respectively arranged at transition positions of different thicknesses.
8. The wind power blade with the buckling restrained prefabricated trailing edge structure according to claim 1, wherein every two adjacent buckling restrained prefabricated trailing edge sections are connected through bolts.

Description

Wind power blade with buckling-resistant prefabricated trailing edge structure Technical Field The utility model relates to the technical field of wind power blades, in particular to a wind power blade with an anti-buckling prefabricated trailing edge structure. Background According to the principle of phyllanthin momentum, the power generation of the wind turbine generator is in direct proportion to the square of the length of the blades, so that increasing the length of the blades is an effective means for improving the power generation of a single machine, and the blades designed and manufactured by each host manufacturer are longer and longer. The safety and reliability of the blades, which are used as important components for capturing wind energy of the wind turbine, greatly influence the service life of the wind turbine. As blade length increases, the loads to which the blades are subjected become greater and greater, which presents additional challenges to the design and manufacture of the blades. The trailing edge area of the blade is composed of a trailing edge beam, a trailing edge die-closing core material, structural adhesive and the like, and mainly bears shimmy load, and the problem of insufficient buckling stability of the trailing edge area is increasingly remarkable along with the increase of the length of the blade. The pressure surface and the suction surface of the blade shell are usually manufactured separately on a die, and after the die is formed, the die is assembled and bonded to form a whole, if the die assembly gap and the structural adhesive width are improper in the die assembly process, manufacturing defects are very easy to form, the bearing capacity of a trailing edge area is influenced, and serious manufacturing defects can cause accidents such as trailing edge cracking, blade breakage and the like of the wind field operation blade. Disclosure of utility model The utility model aims to overcome the defects of the prior art, and provides a wind power blade with an anti-buckling prefabricated trailing edge structure, which can effectively improve the rigidity of the trailing edge of the blade, solve the buckling of the trailing edge, effectively ensure the bonding quality of the trailing edge area, reduce the production manufacturing deviation and improve the reliability of the blade. The aim of the utility model can be achieved by adopting the following technical scheme: The utility model provides a wind-powered electricity generation blade with prefabricated trailing edge structure of buckling restrained, includes the blade body and sets up in the prefabricated trailing edge structure of buckling restrained of trailing edge side of blade body, the prefabricated trailing edge structure of buckling restrained includes a plurality of buckling restrained prefabricated trailing edge subsections of arranging side by side along the blade spanwise direction, the prefabricated trailing edge subsection of buckling restrained includes skin structure and parcel at the inside major structure of skin structure, the major structure includes honeycomb core structure, glass fiber cloth, trailing edge glass fiber cloth, pressure face UD cloth and suction face UD cloth, honeycomb core structure is wrapped up by glass fiber cloth, forms the sandwich structure, pressure face UD cloth is laid in the pressure face of sandwich structure, suction face UD cloth is laid in the suction face of sandwich structure, the surface at the trailing edge side of sandwich structure is laid to the glass fiber cloth of trailing edge. Further, the pressure side UD cloth has the multilayer, and multilayer pressure side UD cloth is the staggered floor setting at the chordwise and the spanwise of blade, the suction side UD cloth has the multilayer, and multilayer suction side UD cloth is the staggered floor setting at the chordwise and the spanwise of blade. Further, the blade body includes pressure face casing, suction face casing, leading edge adhesive layer, pressure face trailing edge adhesive layer, suction face trailing edge adhesive layer, leading edge web and trailing edge web, the leading edge side of pressure face casing and suction face casing passes through the leading edge adhesive layer to be connected, the trailing edge side of pressure face casing passes through pressure face trailing edge adhesive layer and is connected with the pressure face of buckling restrained prefabricated trailing edge structure, the trailing edge side of suction face casing passes through suction face trailing edge adhesive layer and buckling restrained prefabricated trailing edge structure's suction face is connected, the leading edge region between pressure face casing and the suction face casing is provided with the leading edge web, the trailing edge region between pressure face casing and the suction face casing is equipped with the trailing edge web. Furthermore, the bonding interface between the pressure surface shell