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Wind power blade main girder sheet pultrusion impregnation device, mold, equipment and method

A wind power blade and pultrusion technology is applied in the field of pultrusion and dipping devices for main beams of wind power blades. Uneven, no harmful gas volatilization, reducing the effect of damage to the body

Active Publication Date: 2022-06-21
SINOMA SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent document CN 109372708A discloses a structure and manufacturing method of a wind power blade main girder or auxiliary girder, which uses boards, low-area density fabrics and resins, and the boards are superimposed on each other in both the chord and longitudinal directions to improve production efficiency purpose, but in the structure of the main beam and auxiliary beam manufactured by this method, the splicing seam between the plates is the weak link of its load bearing
However, the glue tank is usually an open structure, and the glue in the glue tank is easily affected by the external temperature and humidity, which will cause the viscosity of the glue to change and the fiber impregnation to be uneven; The amount of glue is large, and it is easy to make the glue concentration distribution uneven when placed for a long time; there will also be problems such as unstable fiber arrangement during the molding process, resulting in poor performance of the final product; in addition, the existing pultrusion Poor process control in glue, heating and curing stages, poor control of fiber content, resulting in uneven distribution of resin and fibers in the final product, poor curing effect, and poor performance of the final product

Method used

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  • Wind power blade main girder sheet pultrusion impregnation device, mold, equipment and method
  • Wind power blade main girder sheet pultrusion impregnation device, mold, equipment and method
  • Wind power blade main girder sheet pultrusion impregnation device, mold, equipment and method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] like figure 1 , figure 2 As shown, a closed dipping device for pultrusion of a main beam of a wind turbine blade described in this embodiment includes: a dipping die 1 and a plurality of gluing devices 2; the dipping die 1 includes a closed first The mold cavity 11 and the first heating device arranged outside the first mold cavity 11; The glue injection holes 13 of the plurality of glue injection devices 2 are connected to the glue injection holes 13 and are suitable for injecting glue into the first mold cavity 11 .

[0056] Wherein, the closed first mold cavity has the same cross-sectional shape as the cross-sectional shape of the product to be molded, only the feed port and the discharge port are open, and the rest of the walls are closed mold cavities.

[0057] The working process of the closed dipping device of the pultrusion molding equipment described in this embodiment is that the reinforcing material fibers enter through the feeding port of the first mold c...

Embodiment 2

[0076] The structure of the pultrusion equipment used in this embodiment is the same as that of the first embodiment, except that the length of the first cavity is 20 cm; the length of the heating section in the curing mold is 30 cm; the length of the gel section is is 40cm; the length of the curing section is 30cm.

[0077] The pultrusion method of the wind turbine blade main beam sheet of the present embodiment is specifically:

[0078] S1. The fiber material is drawn out from the creel, separated by the sanding board, arranged through the preformed board, then penetrated into the dipping mold, passed through other molds in the pultrusion mold, and then passed through the curing oven to the traction device, where the traction Machine traction production, the traction speed is 0.35m / min;

[0079] S2. Add the first resin glue into the precision glue injection machine and preheat at 65°C for 10 minutes, add the second resin glue into another precision glue injection machine an...

Embodiment 3

[0082] The structure of the pultrusion molding equipment for the main beam of the wind turbine blade adopted in this embodiment is the same as that in the first embodiment, except that the length of the first cavity is 40 cm; the length of the heating section in the curing mold is 35 cm; the length of the gel section is is 30cm; the length of the curing section is 35cm.

[0083] The pultrusion method of the wind turbine blade main beam sheet of the present embodiment is specifically:

[0084] S1. The fiber material is drawn out from the creel, separated by the sanding board, arranged through the preformed board, then penetrated into the dipping mold, passed through other molds in the pultrusion mold, and then passed through the curing oven to the traction device, where the traction Machine traction production, the traction speed is 0.8m / min;

[0085] S2. Add the first resin glue into the precision glue injection machine and preheat at 50°C for 10 minutes, add the second resin...

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Abstract

The invention provides a dipping device, a mould, a device and a method for the pultrusion forming of the main girder sheet of a wind power blade. The first heating device outside the cavity; the first mold cavity is provided with a material inlet and a material outlet, and the first mold cavity is also provided with a glue injection hole penetrating into the first mold cavity; multiple glue injection devices, multiple The glue outlet of the glue injection device is connected with the glue injection hole, and is suitable for injecting glue into the first mold cavity. The wind power blade main girder sheet pultrusion dipping device, mold, equipment and method can avoid the influence of environmental factors on the performance of the glue, the glue is mixed and used immediately, the concentration uniformity is high, and the orientation of the fiber is accurate and controllable. And by further controlling the length and temperature of each section in the mold, and controlling the content of fiber materials, the effect of dipping and curing is guaranteed, and the performance of the obtained product is better.

Description

technical field [0001] The invention belongs to the field of equipment for the production of composite material products, and particularly relates to a pultrusion and dipping device, a mold, an equipment and a method for a main beam sheet of a wind power blade. Background technique [0002] Wind power blades are mostly infused with glass fiber reinforced composite materials, which have good strength and rigidity. However, with the development of blades, the weight of blades increases exponentially, which obviously does not meet the requirements of lightweight and low-cost blades. Therefore, it has become an important research direction in the wind power industry to find raw materials with lighter quality and higher cost performance, and to explore the molding process with high molding quality, high production efficiency and low production cost. Chinese patent document CN 109372708A discloses a structure and manufacturing method of a main beam or an auxiliary beam of a wind t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/52B29C70/54
CPCB29C70/523B29C70/525B29C70/526B29C70/528B29C70/54B29C70/521
Inventor 张为军王淑霞于航毛雅赛陈锋刘辉毛义梅
Owner SINOMA SCI & TECH
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