JP2003214322A - Divided construction method of surface finished blade for wind power generation - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce a scale of a manufacturing facility, to miniaturize transport equipment and to overthrow a blade related patent which is indispensable for promotion of wind power generation so as to solve a problem that a blade integral mold is optimum for structural strength and efficient collection of wind power energy, a blade recently becomes larger because of necessity for the wind power energy collection, the blade of about 20 m-25 m long in total is not rare, and consequently, cost increases in manufacture and in transportation as a special container and a trailer are required which interferes with the promotion of the wind power generation. <P>SOLUTION: A blade for wind power generation is divided and manufactured by using a carbon fiber system sheet of high strength, etc., and developing a coupler joint. The blade is temporarily assembled at a plant and then delivered to a working site so as to improve construction precision at the working site. A blade frame constitutes is characteristic feature of securing the construction precision only by fitting the coupler on it. The carbonic fiber system sheet of the blade surface, etc., are laminated after fitting the frame body coupler at the working site. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention aims to reduce the cost of transportation equipment from a production facility by dividing the manufacturing process that used to be one-piece molding of wind power generator blades until now. Further, it improves the aerodynamic performance of the blade, and solves a weak point that is unavoidable in the manufacturing method of the blade and is easily cracked or broken.

[0002]

2. Description of the Related Art Wind power generators, blades, etc., which have been patented by the United States and Europe, had to rely on product imports from the United States and Europe, and thus there was a limit to cost reduction and shortening of delivery time. In addition, there is a network of related patents and the number of business companies that can be domestically produced is limited. In addition, wind blades have traditionally been integrally molded, and due to the tendency of blades to increase in size, it is necessary to use special container transportation methods for importing and carrying in, and packaging and transportation costs may reach 50% of the product price, so it will be established as a business. Don't In addition, the integrally molded large blade may be cracked or chipped during transportation before the current assembly.
It is also difficult to replenish parts quickly.

[0003]

In the past, the blade for wind power generation has been optimally integrally formed in Europe and the United States where it originated and spread, in order to efficiently recover structural strength and wind energy. However, in recent years, due to the necessity of utilizing wind energy, it has become large in size, and blades with a total length of 20 to 25 m are not uncommon, and special containers and trailers are required in terms of manufacturing and transportation. There is. On the other hand, domestic production will not be retained due to related patents held by Western manufacturers. Therefore, downsizing of manufacturing facilities and transportation equipment and breaking down of blade-related patents are indispensable for the spread of clean energy wind power generation.

[0004]

In order to solve the above-mentioned problems, the present invention utilizes a high-strength and lightweight carbon fiber-based sheet or the like to separately manufacture a blade to improve the construction accuracy on site. , Carry out temporary assembly at the factory and then carry it to the site. The feature of the blade body is that you can secure the construction accuracy simply by fitting the joint. At the site, after fitting the core joint, the carbon fiber type sheet etc. on the blade surface are laminated and completed, but since the sheet can prevent cracks and defects on the blade surface, there is no concern in terms of functional and structural strength. In addition, a carbon fiber-based sheet or the like with a molding protrusion that reduces air resistance is attached to the entire surface of the blade, but a sheet without a protrusion is stacked and used for the joint.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION According to the present invention, it is possible to carry out divided manufacturing without impairing the original function of the wind power generation blade, and it is possible to reduce the size and simplification of various equipments up to transportation and construction. Since production is possible without a huge initial investment, it will be easy to enter the wind power generation business due to the significant cost reduction. Also,
Easy-to-procure wind power generation blades can be easily procured, so maintenance is easy and the construction process can be significantly shortened.

[0006]

[Embodiment of the present invention] Utilization for wind power generation blades The body of a wind power generation blade is separately manufactured, temporarily assembled in a factory, and then transported to the site for assembly. By winding a carbon fiber sheet with a molded circular protrusion on the surface of the blade, the weaknesses of the conventional blade, which is prone to cracking and chipping, are solved. Therefore, the blade body can be strengthened and the weight can be reduced, and a large cost reduction can be achieved.

[0007]

EFFECTS OF THE INVENTION The present invention not only improves the function of the wind power generation blade, but also significantly reduces the manufacturing and transportation costs by dividing the members and making them smaller. Since capital investment costs can be reduced, it will be easier to enter the wind power generation business.
No special-sized transportation equipment is required for transportation and loading of split blades. Further, since it is considered that the cost of wind power generation, which is also a clean energy, is slow to spread while being expected, it is because the cost is high. Therefore, the present invention significantly reduces the production cost and improves the price competitiveness with other power generation businesses.

[Brief description of drawings]

FIG. 1 is an elevation view of the entire wind turbine generator.

FIG. 2 is an overall view of a wind power generation blade.

FIG. 3 is a detailed view of a body portion joint of a power generation blade.

FIG. 4 is a detailed view of a surface layer joint of a power generation blade.

FIG. 5 is a standard detailed view of a molded sheet with a circular protrusion or the like.

[Explanation of symbols]

1 Power generation tower body 2 power tower foundation 3 nacelle 4 rotor 5 blades 6 Blade joint position 7 Joint reinforcement truss material 8 joint connection pipe 9 Connection pipe fixture 10 Connection pipe guide pipe 11 Protrusion-free sheet for blade joints 12 Sheet with protrusion for blade 13 primer base 14 Body outer wall

Claims (3)

[Claims] 1. A separately manufactured wind power generation blade is assembled on site, and a surface layer is reinforced with a carbon fiber type sheet or the like to prevent cracks and defects. 2. The wind power generation blade is separately manufactured to facilitate handling. This will reduce costs such as manufacturing and transportation costs. 3. A manufacturing facility or the like is downsized by split manufacturing of wind power generation blades to facilitate entry into a wind power generation business.