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Blade of wind-driven generator and manufacturing method thereof

A technology for wind power generators and manufacturing methods, applied to wind power generator components, wind power engines, wind power generation, etc., can solve the problems of reduced strength of formed blades, inconvenient maintenance, time-consuming, etc., and achieve enhanced stress strength and life, The effect of reducing the probability of defective blades and ensuring quality

Inactive Publication Date: 2012-11-28
TPI COMPOSITES (TAICANG) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the existing manufacturing technology of wind turbine blades, vacuum infusion technology is mainly used. During the manufacturing process, for the edges or parts with many layers, there will be wrinkles when laying glass fiber cloth. It is very difficult for the resin to infiltrate the glass fiber cloth at the thick part or the edge of the blade, which is very prone to the disadvantage of imperviousness. At the same time, it will also cause the problem of a decrease in the strength of the formed blade. The current production of wind turbine blades often needs to be repaired and repaired. situation, time-consuming and energy-consuming
At the same time, because the blade shell has been working in a harsh environment for a long time and is suspended at a high altitude, it is extremely inconvenient to maintain

Method used

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  • Blade of wind-driven generator and manufacturing method thereof
  • Blade of wind-driven generator and manufacturing method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A wind turbine blade, characterized in that it includes: a shell, a web, and a root flange, wherein the shell is composed of an upper shell and a lower shell, and the upper shell and the lower shell respectively include Main girder 1, prefabricated part 2, root preforming, and laying; the laying includes glass fiber cloth, balsa wood core material, and foam core material; the web is located between the upper shell and the lower shell of the blade; The root flange is used to connect the blade and the main body of the wind power generator.

Embodiment 2

[0047] Embodiment 2 is a further optimization of Embodiment 1. The blade of a wind power generator as described above is characterized in that the prefabricated part is located at the rear edge of the casing, and its shape deformation area is in line with the rear edge of the casing. The shape of the deformation area is completely consistent.

[0048] Adding prefabricated parts at the trailing edge of the shell can improve the strength and force bearing capacity of the blade.

Embodiment 3

[0050] On the basis of the above embodiments, the design is further optimized, and a lightning rod is installed inside the blade housing.

[0051] Wind turbines are generally installed in relatively open places in the field. Relative to the surrounding objects, the blades are located at a higher position, and they are vulnerable to lightning strikes in thunderstorms. Therefore, installing lightning rods can prevent damage to wind turbines in thunderstorms.

[0052] Method embodiment one

[0053]A method of manufacturing a wind turbine blade, characterized in that it comprises the following steps:

[0054] Step 1: Prepare the root preform, the main beam, and the preform separately by vacuum infusion process in a separate mold;

[0055] Step 2: Lay the root flange, root preform, main girder, and prefabricated parts together with fiberglass cloth, balsa wood, foam core material, and lightning rod in the blade shell mold, and inject resin into the shell through vacuum infusion ...

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Abstract

The invention provides a blade of a wind-driven generator. The blade comprises a housing, a web and a root flange, wherein the housing is divided into an upper housing and a lower housing which respectively comprise main beams, prefabricated components, root preformed parts and paving layers; each paving layer comprises a glass fabric, a balsa core and a foam core; the webs are positioned between the upper housing and the lower housing of the blade; and the root flange is adopted to connect the blade and a main body of the wind-driven generator. The invention also provides a manufacturing method of the blade of the wind-driven generator. The manufacture method comprises the following steps: preparing the root preformed parts, the main beams and the prefabricated components in individual dies; paving the root flanges, the root prefabricated parts, the main beams and the prefabricated components in a housing die together with the glass fabrics, the balsa cores, the foam cores and lightning rods; pouring resin into the housing die through a vacuum pouring technology so as to form the upper housing and the lower housing of the blade; integrally adhering the upper housing and the webs, and overturning the same for 180 degrees to adhere with the lower housing by closing the dies; and then removing the dies to obtain the blade of the wind-driven generator. The blade of the wind-driven generator manufactured by the method provided by the invention has the advantages of high stressing intensity and long service life.

Description

technical field [0001] The invention relates to the field of wind power generation, in particular to a wind power generator blade and a manufacturing method thereof. Background technique [0002] The use of advanced technology to convert wind resources into electrical energy has brought us huge energy-saving potential. The use of wind power not only creates renewable energy, but also has the characteristics of environmental protection, cleanness, inexhaustibility, short production cycle, saving conventional energy such as coal and oil and reducing environmental pollution. The cost of wind power energy is relatively low among renewable energy sources, and it has broad development prospects. Wind power technology is becoming more and more mature, and the installed capacity is flexible. It can be connected to the grid or run independently off the grid. It can also form a complementary power generation system with other energy technologies. Effective use of abundant natural wi...

Claims

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Application Information

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IPC IPC(8): F03D11/00B29C70/34
CPCY02E10/722Y02E10/72Y02P70/50
Inventor 高月红
Owner TPI COMPOSITES (TAICANG) CO LTD
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