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A kind of pultrusion pre-embedded blade root connector for wind power generator blade and preparation method thereof

A wind turbine, blade root connection technology, applied in the direction of connecting components, mechanical equipment, threaded fasteners, etc., can solve the problems of blade quality risks, the problem of layup folds becoming more and more prominent, and the impact of blade root strength being greater. , to reduce the pouring and curing time, the quality is continuous, stable and reliable, and the bolt installation time is reduced.

Active Publication Date: 2017-11-21
ZHONGFU CARBON FIBER CORE CABLE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1) With the lengthening of the blade, the thickness of the root increases continuously, and the problem of wrinkling of the layer at the root becomes more and more prominent
[0004] 2) T-bolts are used, and holes need to be drilled at the root of the blade, which has a great influence on the strength of the root of the blade
[0005] At present, although some pre-embedded pultruded pre-embedded blade root connectors have appeared, they cannot be used as a whole as a connector, so some cloth or fibers need to be filled between the connectors, which are forced to fill the blade. The quality of the

Method used

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  • A kind of pultrusion pre-embedded blade root connector for wind power generator blade and preparation method thereof
  • A kind of pultrusion pre-embedded blade root connector for wind power generator blade and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Such as figure 1 As shown, a pultrusion pre-embedded blade root connector for wind turbine blades, which includes a blade root connector (1-1), a lightweight connector (1-1) connected to the blade root connector (1-1) 4), the lightweight material (1-3) filled in the lightweight connector (1-4), the pultrusion wrapped around the blade root connector (1-1) and the outer periphery of the lightweight connector (1-4) Composites section (1-2).

[0041] The blade root connector (1-1) is an internally threaded casing, an externally threaded bolt, an embedded expansion screw or a wedge-shaped clamp connection structure, and its material can be high-strength metal, composite material, engineering plastic or inorganic non-woven fabric. One or more of the metals.

[0042] The pultruded pre-embedded blade root connector for the blade of the wind power generator, the shape of the blade root connector (1-1) is circular, rectangular, square, elliptical, trapezoidal or triangular.

...

Embodiment 2

[0047] Such as figure 2 Shown, a kind of preparation method of pultrusion pre-embedded blade root connector for wind power generator blade comprises the following steps:

[0048] Step 1: Assembly of accessories

[0049] e. Treat the surface of the blade root connector (1-1);

[0050]f. Fill the lightweight material (1-3) into the lightweight connector (1-4)

[0051] g. Assemble and connect the blade root connector (1-1) with the lightweight connector (1-4);

[0052] h. Seal the end joints of the assembled blade root connector (1-1) and the lightweight connector (1-4), preferably straightening;

[0053] Step 2: Embedded composite pultrusion

[0054] a. First measure the tension of each fiber on the creel (2-1) to ensure that the tension of each fiber is respectively the same, and then dehumidify the fiber through dehumidification equipment to obtain dry fiber;

[0055] b. Adjust the position between the curing mold (2-5) and the preforming tooling (2-4) to ensure the conc...

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Abstract

The invention discloses a pultrusion type embedded blade root connector for wind-driven generator blades and a preparation method thereof. The pultrusion type embedded blade root connector comprises blade root connector bodies (1-1), a light connector body (1-4) connected to the blade root connector bodies (1-1), light material (1-3) filling the light connector body (1-4), and a pultrusion type composite material part (1-2) wrapping the peripheries of the blade root connector bodies (1-1) and the periphery of the light connector body (1-4). The pultrusion type preparation method comprises the steps of part assembly, embedded type composite material pultrusion and finishing. The embedded blade root connector has the advantages that the appearance size is stable, the defect rate of products is low, the quality is continuously stable and reliable, locating is accurate, interfaces between different kinds of material are firmly bonded, and the mechanization level is high. The preparation method has the advantages that the time of occupying molds by the products can be shortened, the time of laying material can be shortened, the time of installing bolts can be shortened, the time of pouring and curing can be shortened, the production efficiency is high, and the labor cost is low.

Description

technical field [0001] The invention relates to a blade accessory of a wind power generator, in particular to a pultrusion pre-embedded blade root connector for a wind power generator blade and a pultrusion forming process thereof. Background technique [0002] As the size of the blade becomes larger and larger, the root connection form of the T-bolt is adopted, and there are two unfavorable factors in the application as follows: [0003] 1) With the lengthening of the blade, the thickness of the root increases continuously, and the wrinkle problem of the layer at the root becomes more and more prominent. [0004] 2) T-bolts need to be drilled at the root of the blade, which has a great impact on the strength of the root of the blade. [0005] At present, although some pre-embedded pultruded pre-embedded blade root connectors have appeared, they cannot be used as a whole as a connector, so some cloth or fibers need to be filled between the connectors, which are forced to fi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/52
CPCB29C70/521F16B2/00F16B13/063F16B35/00F16B35/04F16B37/00Y02P70/50
Inventor 任桂芳田超凯王志伟宋朝印庞中强张玉庆陈中伟
Owner ZHONGFU CARBON FIBER CORE CABLE TECH
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