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Wind machine's laminae made from composite material and preparation method

A technology of wind turbine blades and composite materials, which is applied to wind turbines, wind generator components, and wind turbines that are in line with the wind direction, etc. It can solve problems such as difficulty in reducing costs, large workshop area, and complicated procedures, and achieves easy on-site preparation. , high quality, simple process effect

Inactive Publication Date: 2005-10-26
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the many molds used for multi-step molding, complex procedures, and large workshop area, it is also difficult to reduce costs by using this method to prepare giant blades on site.

Method used

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  • Wind machine's laminae made from composite material and preparation method
  • Wind machine's laminae made from composite material and preparation method
  • Wind machine's laminae made from composite material and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] In the lower mold cavity 1, spread the surface modification fiber cloth (nylon or spun glass fiber cloth) 2, and then spread the reinforced fiber cloth 3, such as figure 1 shown. The other half of these fiber cloths are suspended outside the front edge of the lower cavity, wherein the upper and lower sections of unidirectional fiber cloth are pre-sewn / glued together with the innermost fiber cloth. At the end of the lower mold cavity, a metal (aluminum alloy, titanium alloy, stainless steel, etc.) connecting piece 4 is placed, and the connecting piece is integrally processed by a flange 5 and a tapered tube 6, see figure 2. Spread elastic core bag 7 again, and heating device 8 is installed in the core bag. Fold and sew each layer of fiber cloth respectively and arrange the seam 13 at the rear edge, so that the core bag and the connecting parts are all wrapped in the fiber cloth, see image 3 . Before sewing, the upper and lower sections of unidirectional fiber cloth...

Embodiment 2

[0032] Embodiment 2 is basically the same as Embodiment 1, but after the hollow leaf shell of the large-scale blade is formed, the upper and lower surfaces inside the leaf shell are respectively pasted with wooden boards or composite boards with strong glue, and then the support column is fixed between the upper and lower wooden boards, using to increase the stability of the blade.

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Abstract

The invention is the blade of composite wind mill and its manufacturing method. It is characterized in that the composite blade is closed die forming, which adopts the flexible core, the core heating and solidifying, the fiber closed along the section and the fixing of the connective device and the blade root. The blade is composed of the reinforcing fiber cloth, the resin base, the connective parts and the filling core. One half of the fiber cloth is spread at the root end of the formed die of the blade, and is put into the stretch core bag with heating equipment, and the connective parts are set at the fiber place of the blade root. The other half of the fiber cloth coats the stretch core bag and the connective parts. Die composition, die locking, vacuuming, resin injection and liquid pumping to the stretch bag to form the sealed head squeezing of the bag and the die chamber, and heat the liquid and solidify the blade under the medium temperature; remove the die chamber and the core bag, and inject poly resin materials into the hollow blade shell to bubble and fill to get the composite wind mill blades.

Description

technical field [0001] The invention relates to a composite material wind turbine blade, in particular to a large composite material wind turbine blade and a preparation method thereof. Background technique [0002] Due to the increasing shortage of primary energy (petroleum, coal, etc.), the development and utilization of renewable energy has become the consensus of mankind and has attracted great attention from all countries. Among them, wind energy is a renewable energy source with the most commercial development value at present, and it will surely become a focus of my country's energy development and utilization. [0003] Wind power generation is to collect scattered wind energy to do mechanical work, and then convert it into electrical energy, so that it can be directly used by human beings. Blades play a pivotal role in wind turbines. The design and manufacturing quality level of the blade is the key technology and technical level representative of the wind power ge...

Claims

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Application Information

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IPC IPC(8): F03D1/06F03D3/06
CPCY02E10/722Y02E10/72Y02E10/74Y02P70/50
Inventor 黄争鸣
Owner TONGJI UNIV
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