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Vacuum infusion method for wind turbine blade

A technology of vacuum infusion and wind power blades, which is applied to other household appliances, household appliances, household components, etc., can solve inconvenience and other problems, achieve the effects of avoiding performance degradation, improving blade quality, and solving damage or even breaking

Active Publication Date: 2020-04-28
GUODIAN UNITED POWER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] It can be seen that the above-mentioned existing wind power blade vacuum infusion method obviously still has inconvenience and defects, and needs to be further improved urgently.

Method used

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  • Vacuum infusion method for wind turbine blade
  • Vacuum infusion method for wind turbine blade

Examples

Experimental program
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Effect test

preparation example Construction

[0026] The preparation process of the device for vacuum infusion of wind power blades is described in detail below:

[0027] (1) Selection of anti-wrinkle suction area. There are two options: (a) The main girder, trailing edge beam, and blade root thickening layer are prefabricated parts, and the first air extraction area is arranged within the range of 300mm from the edge of the prefabricated part to the edge, and the overflow pipe of the first air extraction area is both It can be on one side of the prefabricated part or on both sides of the prefabricated part, and can be symmetrical or asymmetrical on both sides of the prefabricated part. The overflow pipe of the first air extraction area can be parallel to the edge of the preform or form an acute angle with the edge of the preform, and the length of the first air extraction area can be equal to or shorter than the edge of the preform and can also be arranged in sections. (b) The main girder, the trailing edge beam, and th...

Embodiment 1

[0038] combine figure 1 , 2 As shown, the vacuum infusion method for wind power blades in this embodiment specifically includes the following steps:

[0039] (1) overall laying. The blade shell layer 2 and the fabric thick layer (main beam 101, trailing edge beam 102) are laid. Lay the release cloth 3 on the layer 2, lay a 100mm wide isolation film 4 in the pre-laying area of ​​the guide tube 7, and lay a woven diversion net 5 and a local shear gap to make a barrier in the edge of the layer. Adhesive tape 6, five guide tubes 7 are arranged in the axial direction, and a glue injection seat 8 is placed every 7m on the guide tube 7, and a VAP vacuum unit 16 is arranged in the area where the mold flanging and the laminate overlap, and the VAP vacuum Unit 16 is an assembled air extraction assembly.

[0040] (2) Arrange the first air extraction area. Since the main beam 101 and the trailing edge beam 102 are prefabricated parts, two 200mm wide air felts 14 (or VAP one-way air-p...

Embodiment 2

[0045] refer to figure 1 , 2 As shown, the vacuum infusion method for wind power blades in this embodiment specifically includes the following steps:

[0046] (1) overall laying. The blade shell lay-up 2 and the fabric thick layer (not shown in the blade root thickening diagram) are laid. Lay release cloth 3 on the layer 2, lay a 100mm wide isolation film 4 in the pre-laying area of ​​the guide tube 7, lay a hot-pressed flow guide net 5 and partially apply a sealant on the edge of the layer Make resist tape 6, arrange three overflow pipes 7 along the chord direction, and place a glue injection seat 8 at the lowest point on the overflow pipe, and arrange VAP vacuum unit 16 in the area where the mold flanging and the laminate overlap.

[0047] (2) Arrange the first air extraction area. Since the thickening layer of the blade root is made of glass fiber fabric, three 100mm-wide diversion nets 5 are respectively arranged at the position close to the rubber inlet seat 8, the le...

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Abstract

The invention discloses a vacuum infusion method for a wind turbine blade. The method is characterized in that an anti-wrinkle air extraction region is set in a preparation process of the wind turbineblade, the anti-wrinkle air extraction region comprises a first air extraction region and a second air extraction region, and the first air extraction region is arranged in a main beam, a rear edge beam and / or a blade root thickening layer region or is arranged in a region near the main beam, the rear edge beam and / or a blade root thickening layer; the second air extraction region is arranged along the periphery of a blade mold in a flanging manner; and in the vacuumizing stage, air extraction is conducted in the first air extraction region firstly, air extraction is conducted in the first air extraction region from low points to high points in sequence, then air extraction is conducted in the second air extraction region, and then blade vacuum infusion is conducted. Besides, an anti-richresin air extraction region is further arranged in the preparation process of the wind turbine blade, and when rich resin appears in the later period of infusion, the corresponding anti-rich resin air extraction region is opened for low-point air extraction. The vacuum infusion method for the wind turbine blade is easy to operate and high in efficiency, and damage and even breakage of the blade due to wrinkles or resin enrichment are avoided.

Description

technical field [0001] The invention relates to the field of wind power generator blade preparation, in particular to a vacuum infusion method for wind power blades. Background technique [0002] The blades of wind turbines are the key components for wind power equipment to convert wind energy into mechanical energy, and are made of composite materials. In the early days, wind power blades were formed by hand lay-up process or prepreg process, but in recent years, vacuum infusion process is the main method. The vacuum infusion process is to lay fiber fabrics, core materials, prefabricated parts, etc. on the mold layer by layer according to the design, and then lay out the release cloth, isolation film, and diversion net in sequence, arrange the resistance tape locally, and arrange the diversion in the shell area. Pipe and rubber inlet seat, arrange the exhaust pipeline on the mold flanging, seal the vacuum bag, plug in the exhaust pipe and the glue inlet pipe, the vacuum pu...

Claims

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Application Information

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IPC IPC(8): B29C70/36B29C70/54B29L31/08
CPCB29C70/36B29C70/54B29L2031/082
Inventor 袁凌褚景春闫文娟刘伟超
Owner GUODIAN UNITED POWER TECH
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