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A kind of wind power blade and its manufacturing method

A technology for wind power blades and manufacturing methods, which is applied in the field of wind power blades and their manufacturing, can solve problems such as the inability to guarantee the quality of glass fiber and core material layup, the difficult manufacturing process of the shell, and the uncontrollable distribution of glue content, etc., to achieve saving The effect of removing bonding and curing time, improving product quality, and making the production process less difficult

Active Publication Date: 2020-10-16
ZHUZHOU TIMES NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this invention, the web is poured in a vertical state, and the quality of the web is prone to quality problems. At the same time, the distribution of the glue content of the web in the vertical state cannot be controlled, and the glue content may be unqualified; in addition, the web needs to be laid in a vertical state. Glass fiber and The core material is difficult, and the quality of the laminated glass fiber and core material cannot be guaranteed. The manufacturing process of the shell is extremely difficult, and there are high quality risks such as glass fiber wrinkles and core material displacement.
In this invention, the web layering or installation during the shell forming process will increase the shell forming cycle. Although the web bonding link in the blade manufacturing process is reduced, the blade forming efficiency is not high.

Method used

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  • A kind of wind power blade and its manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] 1) On the beam mold, lay the lower surface guide net and the lower surface release cloth in sequence, with a density of 150g / m 3 Polyethylene core material (core material chord laying width is 50mm, thickness is 5-50mm), surface density is 1600g / m 2 Girder fiberglass fabric with a density of 1000g / m 3 Place the web on the upper surface of the glass fiber cloth, control the gap between the web and the upper surface of the glass fiber cloth to ≤0.1mm, and then lay the upper surface release cloth on the web and the upper surface of the glass fiber cloth to guide the upper surface Air-pumping bags on the net and the upper surface, and then lay a sealed vacuum bag film on the entire girder mold, so that the girder mold after the web is placed as a whole forms a vacuum system, vacuuming, so that the vacuum degree is ≤ -0.098Mpa and can maintain vacuum negative pressure Not less than 30 minutes, then inject the resin system into the molding cavity through the injection port w...

Embodiment 2

[0046] 1) On the beam mold, lay the lower surface guide net and the lower surface release cloth in sequence, with a density of 80g / m 3 Polyethylene terephthalate core material (core material chord laying width 50mm, thickness 5-50mm), surface density 1000g / m 2 The beam carbon fiber fabric with a density of 1250g / m 3 Place the web on the upper surface of the glass fiber cloth, control the gap between the web and the upper surface of the glass fiber cloth to ≤0.1mm, and then lay the upper surface release cloth on the web and the upper surface of the glass fiber cloth to guide the upper surface The net and the upper surface pump the bag, and then lay a sealed vacuum bag film on the entire girder mold, so that the girder mold after the web is placed as a whole forms a vacuum system, and the same operation method as in Example 1 is used for vacuum infusion of resin and curing molding. Obtain the prefabricated part of the girder web;

[0047] 2) Lay the lower skin reinforcing mate...

Embodiment 3

[0050] 1) On the beam mold, lay the lower surface guide net and the lower surface release cloth in sequence, with a density of 200g / m 3 The balsa wood core material (core material chord laying width is 50mm, thickness is 5-50mm), surface density is 1800g / m 2 The beam carbon fiber fabric with a density of 800g / m 3 Place the web on the upper surface of the glass fiber cloth, control the gap between the web and the upper surface of the glass fiber cloth to ≤0.1mm, and then lay the upper surface release cloth on the web and the upper surface of the glass fiber cloth to guide the upper surface The net and the upper surface pump the bag, and then lay a sealed vacuum bag film on the entire girder mold, so that the girder mold after the web is placed as a whole forms a vacuum system, and the same operation method as in Example 1 is used for vacuum infusion of resin and curing molding. Obtain the prefabricated part of the girder web;

[0051] 2) Lay the lower skin reinforcing materia...

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Abstract

The invention discloses a wind turbine blade, which comprises a pressure surface shell and a suction surface shell of a girder web preform. The girder web preform comprises a girder die, a core material, girder UD fabrics, upper surface glass fiber cloth, and a web. The core material, girder UD fabrics, upper surface glass fiber cloth, and web are paved on the girder die in sequence. The manufacturing method comprises following steps: paving a guide net, demoulding cloth, the core material, girder UD fabrics, and upper surface glass fiber cloth on the girder die; then placing the web; carryingout curing and moulding to obtain the girder web preform; paving the girder web preform and other materials on a suction surface shell die and a pressure surface shell die, then carrying out curing and moulding to obtain the suction surface shell and the pressure surface shell; and adhering the suction surface shell and the pressure surface shell together to obtain the wind turbine blade. Beforethe girder web preform is manufactured, the web is produced by a VARTM technology; then the web is paved on the girder to produce the girder web preform, the resin content is controllable, and the produced wind turbine blade does not have quality risk of the web.

Description

technical field [0001] The invention belongs to the technical field of wind power blades, and in particular relates to a wind power blade and a manufacturing method thereof. Background technique [0002] With the rapid development of technology in the wind power industry, it is required to increase the size and weight of wind power blades. At the same time, it is also required to reduce the weight of the blades, reduce the production cost of the blades, and improve the product quality and blade production efficiency. At present, the technology commonly used in the wind power blade industry is: first make the girder and web prefabricated parts separately, and then use the girder prefabricated parts and other materials to make the stress surface shell and the pressure surface shell together. The plate prefabricated part is bonded to the shell on the force side or the shell on the pressure side with adhesive. After the web adhesive is cured, the adhesive is applied to other bon...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/36F03D1/06
CPCB29C70/36F03D1/0608Y02E10/72Y02P70/50
Inventor 梁自禄黄明富陈煌刘海洋马倩倩
Owner ZHUZHOU TIMES NEW MATERIALS TECH
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