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Preparation method of balsa wood core material for wind turbine blade web

A technology of wind turbines and blades, which is applied to wind engines, engines, mechanical equipment, etc., can solve problems such as corrosion and inability to meet diversified performance requirements, and achieve the effects of overcoming deficiencies, reducing the risk of corrosion, and controlling costs

Active Publication Date: 2021-03-23
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 power generator blades, in particular to a method for preparing a wind power generator blade web balsa wood core material; comprising: slicing, fine grinding, dehumidification, double-end sawing and gluing, followed by pretreatment Perform shallow grooving, punching, patching, deep grooving, finished product inspection, template making, line drawing, edge trimming, logo writing, chamfering, IPQC process inspection, board separation, dehumidification, laying inspection and packaging. The opening of shallow grooves is to open shallow grooves on at least one surface of the core material. There are several shallow grooves, and the several shallow grooves are interlaced and arranged in a rectangular grid on the surface of the core material. For the through holes on the upper and lower surfaces of the core material, three humidity detections are set in the preparation method of the present invention, which further reduces the possibility of moisture absorption of the core material during the preparation process, and reduces the corrosion of bacteria enclosed in the core material during operation. risk, thereby effectively overcoming the deficiency of the balsa wood core material.

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 Patents(China)
IPC IPC(8): F03D80/00B27D1/06B27M1/08
CPCB27D1/06B27M1/08Y02P70/50
Inventor 谢炎利
Owner 常州兆庚新材料有限公司
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