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Preparation method of Balsa wood core material of wind driven generator blade web

A technology for wind turbines and blades, which is used in wood processing appliances, the joining of wooden veneers, and manufacturing tools, etc., can solve problems such as corrosion and inability to meet diverse performance requirements, overcome deficiencies, and improve resin filling. Efficiency and cost control

Active Publication Date: 2020-11-20
常州兆庚新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, balsa wood belongs to cellulose, and cellulose is the food of bacteria, fungi and insects. It is too hydrophilic, and there is a risk of corrosion caused by bacteria that are enclosed in the core material during operation. performance requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A method for preparing a core material of balsa wood for a wind turbine blade web, comprising the following steps:

[0039] S1 Incoming balsa wood pretreatment, the moisture content of the balsa wood raw material is ≤12%, and the density is 135-175kg / m 3 ;

[0040] S101 slice: Slice the balsa wood according to the size of the design thickness ±0.6mm;

[0041] S102 fine grinding: fine grinding is carried out according to the design thickness ±0.5mm;

[0042] S103 Dehumidification: Dehumidification is processed by circulating hot air. The specific control of hot air temperature is as follows: the initial temperature is room temperature, the final temperature is 40°C, the heating rate is 8°C / h, and the dehumidification treatment reaches a moisture content of ≤11.5%.

[0043] S104 double-end sawing treatment: the length and width meet the requirements of standard boards, and the diagonal line is ≤3mm;

[0044] S105 Glue coating: the glue coating is double-sided coating, ...

Embodiment 2

[0065] A method for preparing a core material of balsa wood for a wind turbine blade web, comprising the following steps:

[0066] S1 Incoming balsa wood pretreatment, the moisture content of the balsa wood raw material is ≤12%, and the density is 135-175kg / m 3 ;

[0067] S101 slice: Slice the balsa wood according to the size of the design thickness ±0.6mm;

[0068] S102 fine grinding: fine grinding is carried out according to the design thickness ±0.5mm;

[0069] S103 Dehumidification: Dehumidification is processed by circulating hot air. The specific control of hot air temperature is as follows: the initial temperature is room temperature, the final temperature is 45°C, the heating rate is 10°C / h, and the moisture content is ≤11.5%.

[0070] S104 double-end sawing treatment: the length and width meet the requirements of standard boards, and the diagonal line is ≤3mm;

[0071] S105 Glue coating: the glue coating is double-sided coating, and the weight of the coating layer ...

Embodiment 3

[0092] A method for preparing a core material of balsa wood for a wind turbine blade web, comprising the following steps:

[0093] S1 Incoming balsa wood pretreatment, the moisture content of the balsa wood raw material is ≤12%, and the density is 135-175kg / m 3 ;

[0094] S101 slice: Slice the balsa wood according to the size of the design thickness ±0.6mm;

[0095] S102 fine grinding: fine grinding is carried out according to the design thickness ±0.5mm;

[0096] S103 Dehumidification: Dehumidification is processed by circulating hot air. The specific control of the temperature of the hot air is: the initial temperature is room temperature, the final temperature is 50°C, the heating rate is 10°C / h, and the moisture content is ≤11.5%.

[0097] S104 double-end sawing treatment: the length and width meet the requirements of standard boards, and the diagonal line is ≤3mm;

[0098] S105 Gluing: Gluing is double-sided coating, and the weight of the coating layer is 16±3g / side; ...

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Abstract

The invention relates to the technical field of wind driven generator blades, and particularly relates to a preparation method of a Balsa wood core material of a wind driven generator blade web. The preparation method comprises the steps of slicing, accurate grinding, dehumidification, double-end sawing treatment and gluing, and after pretreatment, shallow groove forming, punching, cloth pasting,deep groove forming, finished product inspection, template manufacturing, line drawing, edge cutting, mark writing, chamfering, IPQC process inspection, plate separation, dehumidification, laying inspection and packaging and warehousing are sequentially conducted. According to shallow groove forming, a plurality of shallow grooves are formed in at least one surface of the core material and are staggered on the surface of the core material to be arranged in a rectangular grid shape, and through holes penetrating through the upper surface and the lower surface of the core material are punched inthe intersection points of the multiple shallow grooves. According to the preparation method, three times of humidity detection are set, the moisture absorption possibility of the core material in the preparation process is further reduced, the risk of corrosion of bacteria and the like sealed in the core material in the operation process is reduced, and therefore the defects of the Balsa wood core material are effectively overcome.

Description

technical field [0001] The invention relates to the technical field of wind power generator blades, in particular to a method for preparing a wind power generator blade web balsa core material. Background technique [0002] The blade is the key component of the wind turbine to capture wind energy, and it is also the power source and main bearing part of the wind turbine, which plays a key role in the safe operation of the entire wind turbine. With the development of wind power technology, the capacity of a single unit increases, and the blades become longer and longer. The influence of the web on the performance of the blades is also becoming more and more obvious. In addition, the middle and downstream wind turbines in the wind field will be affected by the wake field of the upstream wind turbine during operation. At the same time, due to the randomly changing natural atmospheric environment, the stress and movement conditions of the wind turbine blades are very complicated...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27D1/06B27M1/08
CPCB27D1/06B27M1/08Y02P70/50
Inventor 谢炎利
Owner 常州兆庚新材料有限公司
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