Sectional wind turbine blade connecting device and method
A technology of wind turbine blades and connection devices, which is applied in the field of wind power, can solve the problems of bad influence of blade fatigue life, poor integrity, and heavy weight, and achieve the effect of small influence of blade fatigue life, light structure and high connection strength
Active Publication Date: 2014-03-26
东台城东科技创业园管理有限公司
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Problems solved by technology
[0005] The technical problem to be solved by the present invention is that the existing segmented blade connecting device has the disadvantages of heavy weight, poor integrity, and adverse effects on the fatigue life of the blade, thereby providing a segmented wind turbine blade connecting device and connection method
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[0030] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.
[0031] A segmented blade comprises at least two blade parts, and in an embodiment of the invention the segmented blade is divided into two two blade parts.
[0032] see figure 1 , the segmented blade includes a blade part 100 and a blade part 200, and the two blade parts are fixedly connected by a connecting device.
[0033] see figure 2 , the connection device includes a blade shell connection device and a shear rib connection device.
[0034] The blade shell connecting device includes several FRP flanges 300, which are arranged on the section of each blade part.
[0035] The FRP flange 300 used in the present invention is integrated with the blade by melting and casting through a mold, and is directly formed on the section of each blade pa...
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The invention discloses a sectional wind turbine blade connecting device and method. The connecting device comprises a blade shell connecting device and a shear rib connecting device. The blade connecting device comprises a plurality of glass reinforced plastic flanges, wherein the glass reinforced plastic flanges are directly formed on sections of blade connecting positions respectively, corresponding threaded holes are formed in every two glass reinforced plastic flanges in butt joint with each other respectively and are provided with bolts, and the bolts are provided with self-locking nuts. The shear rib connecting device comprises a plurality of foams and a plurality of glass reinforced plastic plates, wherein the foams are arranged between two corresponding sections of shear ribs and are provided with through holes, the glass reinforced plastic plates are arranged on connecting positions outside the two corresponding sections of shear ribs respectively, the glass reinforced plastic plates and the shear ribs are provided with corresponding threaded holes corresponding to the through holes in the foams, and the shear rib connecting device further comprises a plurality of bolts and self-locking nuts. The sectional wind turbine blade connecting device is good in integrity, high in connecting strength and light in self-weight and has small impact on the fatigue life of blades.
Description
technical field [0001] The invention relates to the field of wind power, in particular to a connection device and a connection method of segmented blades of a wind power generator. Background technique [0002] Since my country's reform and opening up, the national economy has developed rapidly, and electricity consumption has increased sharply. Traditional fossil fuel power generation has huge environmental protection problems and carbon emission problems. Therefore, the development of clean energy has become a top priority, and wind power is one of them. [0003] In recent years, the single unit power of wind turbines has continued to increase, and the market share of low-wind-speed turbines has continued to increase. These two reasons have caused the length of wind turbine blades (hereinafter referred to as "blades") to continue to increase. At present, the areas where super-large and long blades are installed in China, especially those with low-wind speed, are mainly e...
Claims
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IPC IPC(8): F03D1/06
CPCY02E10/72
Inventor 李海涛张锦南王小涌倪国康郭辉
Owner 东台城东科技创业园管理有限公司