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FBG (Fiber Bragg Grating) high-strain-transmissibility rapid pasting and laying method for wind power blade under high humidity

A wind power blade, high humidity technology, applied in wind power generation, mechanical equipment, wind turbines, etc., can solve the problems of long blade production cost, strain monitoring effect, fiber breakage and sticking off, etc., to reduce the use cost, guarantee Strain monitoring stability, the effect of ensuring paste stability

Pending Publication Date: 2022-04-05
ZHUZHOU TIMES NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because it is made of glass, there are many accidents of fiber optic cable breakage and sticking off during the blade rotating service process, and the strain monitoring effect is also easily affected during use, so there is an urgent need for a fatigue-resistant high strain transfer rate stick Way
Before the blades are molded, the longer the mold is used, the higher the cost of blade manufacturing. Therefore, how to quickly and efficiently lay out the blades during the laying process is also an urgent problem to be solved in the wind power industry.

Method used

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  • FBG (Fiber Bragg Grating) high-strain-transmissibility rapid pasting and laying method for wind power blade under high humidity
  • FBG (Fiber Bragg Grating) high-strain-transmissibility rapid pasting and laying method for wind power blade under high humidity
  • FBG (Fiber Bragg Grating) high-strain-transmissibility rapid pasting and laying method for wind power blade under high humidity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Such as figure 1 Shown is a layout method of a surface-mounted FBG strain sensor with high humidity resistance and fracture resistance applied to wind power blades, including surface-mounted FBG sensors, wind power blades, demodulators, optical fiber sensor connectors, 0.27mm thick glass fiber prefabricated Dipping material, Loctite fast two-component epoxy glue.

[0060] Such as figure 1 , image 3 , Figure 4 Shown is a method for pasting a surface-mounted FBG strain sensor that is resistant to high humidity and breakage for wind power blades.

[0061] Step 1: Conduct tensile and shear experiments according to Figure 9 When the environment is determined to be 80% RH, the colloid model is Loctite fast two-component epoxy resin glue

[0062] Step 2: Carry out finite element simulation on pasted parameters according to Figure 7 , Figure 8 Take three effective figures for the strain transfer rate to get the pasting parameters: the pasting width is 11mm, and the ...

Embodiment 2

[0069] Such as figure 1 , Figure 5 , Image 6 A layout method of high strain transfer rate of wind turbine blades based on FBG fiber Bragg grating sensor is shown, including the following steps:

[0070] Step 1: Determine the size of the blade, and select the laying distance of the blade tip before mold closing according to the deepest distance that the laying personnel can enter into the complete blade.

[0071] Step 2: Before closing the mold, use a high-efficiency fusion splicer to connect two adjacent FBG sensors that need to be connected in series at the tip curvature of the determined distance

[0072] Step 3: Paste the white paper on the side of the prepreg white paper to the W-shaped mold with double-sided tape and tear off the plastic film, press and paste the connecting wires of the two FBG sensors on the prepreg, and evenly coat the prepreg Thai fast two-component epoxy resin adhesive.

[0073] Step 4: Use a W-shaped mold to press the adhesive-coated prepreg on...

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Abstract

The invention provides an FBG (Fiber Bragg Grating) high-strain-transmissibility rapid pasting and laying method for a wind power blade under high humidity, which comprises the following steps: S1, a surface-mounted FBG sensor structure: sequentially pasting an optical fiber, a colloid and a glass fiber prepreg on a substrate, and arranging a grid region in the middle of the optical fiber; s2, the pasting method comprises the steps that 1, a mold is selected, wherein the mold is selected from at least one of a linear mold, an S-shaped mold and a W-shaped mold; (2) selecting an adhesive, namely selecting at least one of 502 glue, 5210 glue, 353ND glue and loyd epoxy resin glue; 3) selection of pasting parameters: the pasting width is 11-13mm, and the pasting length is 80-120mm, and 4) a pasting method is that the sensor is pasted with specific pasting parameters by using a tool. According to the invention, the sensor is pasted by using a mold, and in the pasting process, the Loctai epoxy resin glue and the glass fiber prepreg are used for covering and pasting protection with specific parameters.

Description

technical field [0001] The invention relates to the technical field of wind power blades, in particular to a fast pasting and laying method of wind power blades using FBG with high strain transfer rate under high humidity. Background technique [0002] The current production process of large wind power blades is through manual layer laying and mold closing. It is inevitable that small defects will appear in the production process. During the service process, due to the harsh environment, sand, gravel, storms, heavy rainfall and snowfall will cause small defects. Expansion, becoming a more serious defect, will also cause condensed water or accumulated water inside the blade cavity. The long-term adhesion of accumulated water in the blade cavity will have a very serious impact on the internal sensors. Therefore, a moisture-resistant Permanent structural health monitoring is of great significance. [0003] At present, there are mainly two methods commonly used by researchers f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/16F16B11/00F03D80/00
CPCY02E10/72Y02P70/50
Inventor 高康段磊王子菡刘奇星蔡明
Owner ZHUZHOU TIMES NEW MATERIALS TECH
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