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Sectional type lightning guide strip and manufacturing method thereof

A flow-guiding strip and segmented technology is applied in the field of segmented lightning guide strips and their production, which can solve the problems of difficult processing and high cost, and achieve the effects of low cost, convenient processing and use, and reduced breakdown voltage.

Active Publication Date: 2012-07-04
XIAN AIRBORNE ELECTROMAGNETIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In view of the existing domestic processing conditions, especially in small batch production, this method also has defects such as difficult processing and high cost

Method used

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  • Sectional type lightning guide strip and manufacturing method thereof
  • Sectional type lightning guide strip and manufacturing method thereof
  • Sectional type lightning guide strip and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] figure 1 with figure 2 Among them, the insulating base tape 1 is made of polyester film (PET), and its thickness is generally 0.1mm. The width is from 0.5mm to 2mm, cut from the whole polyester film, and the length is determined according to actual needs.

[0053] The first adhesive layer 2 and the other adhesive layer 3 are both flexible epoxy adhesives, which are flexible after curing, so that the entire flow guiding strip can be bent so as to be pasted on curved equipment surfaces. An adhesive layer 2 is relatively thin, generally 0.1 mm to 0.2 mm, and is applied along the center of the insulating base tape 1 , and is mainly used for preliminary positioning of the metal sheet 5 . The location of the metal sheet 5 on the insulating base tape 1 can be by means of such as image 3 The template 8 shown realizes that the hole 9 on the template 8 is consistent with the size of the metal sheet, so that the metal sheet just fits into the hole. In order to reduce the br...

Embodiment 2

[0057] figure 1 with figure 2 The dotted line box is the ground terminal 6, and the dotted line box indicates that this part can be omitted, because some applications do not need the ground terminal. The ground terminal 6 is cut from a thin copper sheet with a thickness of 0.1-0.5mm. The mounting hole 7 is processed by stamping, and the diameter of the hole is determined according to the size of the screw hole at the actual mounting position. The shape of the mounting hole 7 includes but is not limited to a circle or a rounded rectangle, Figure 5 In the example, the mounting hole 7 is a rounded rectangle.

specific Embodiment approach

[0060] 1) Cut the polyester film into long strips with a width of 0.5mm to 5mm. The length is determined according to the needs. Generally, a single piece does not exceed 1m. figure 2 in 1);

[0061] 2) On the thin metal plate (thickness 0.1mm ~ 0.5mm), the metal sheet is cut out by laser cutting, and the shape of the metal sheet is circular or rhombus (such as figure 1 , Figure 4 5 in), the size is 1mm ~ 5mm, it should be ensured that the cut metal sheet is free of burrs and metal residues;

[0062] 3) Cut out the shape of the grounding terminal with a thin copper sheet (such as figure 1 , Figure 5 shown in 6), punch out the mounting holes by punching (such as figure 1 , Figure 5 shown in 7);

[0063] 4) Apply a thin layer of adhesive to the center of the insulating base tape (such as figure 2 2 in), the adhesive thickness is 0.1mm~0.2mm;

[0064] 4), using templates (such as image 3 As shown), the metal sheet is positioned on the insulating base tape, and t...

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Abstract

The invention discloses a lightning guide strip and a manufacturing method thereof. The lightning guide strip is formed by adhering metal sheets on an insulating base band by adhesive at intervals and spraying aluminum powder on the adhesive between the two metal sheets. The lightning guide strip further comprises a grounding terminal. The manufacturing method comprises the following steps of: utilizing a laser cutting technology to machine the metal sheets and utilizing a template to position the metal sheets on the insulating base band coated by the adhesive; removing the template and coating an adhesive layer on the insulating base band after the adhesive on the insulating base band is primarily solidified; spraying one layer of the aluminum powder on the upper surface of the adhesive and finally polishing the whole guide strip to completely expose the upper surfaces of the metal sheets. The lightning guide strip provided by the invention has the advantages of simple structure, convenience for machining and utilization and low cost; the guide strip has a good lightning protection performance so that the influences on a radio frequency performance of a radar antenna are reduced;the aluminum powder between the metal sheets can be used for reducing a breakdown voltage so as to improve the lightning protection performance; and the service life is long so that the lightning guide strip can be widely applied to the lightning protection of equipment including airplane parts, blades of a wind driven generator, a radar antenna cover and the like.

Description

technical field [0001] The invention belongs to the field of lightning protection, and in particular relates to a segmented lightning guide bar and a manufacturing method thereof. Background technique [0002] Aircraft are vulnerable to lightning strikes during flight, and the high voltage and high current during lightning strikes can cause serious damage to aircraft components and threaten flight safety. Equipment such as blades of wind turbines and high-position radomes are also easily damaged by lightning. Therefore, lightning protection must be carried out. [0003] Lightning guide strips can be divided into three types: integral guide strips, segmented guide strips and powder guide strips. Integral flow guide strips are usually made of aluminum strips, with simple structure and good protection effect. However, due to their heavy weight, difficult installation and maintenance, and a certain degree of influence on radar antenna equipment, they are rarely used now. [...

Claims

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Application Information

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IPC IPC(8): H01T4/16H01T21/00
Inventor 熊秀骆立峰范晓宇王龙
Owner XIAN AIRBORNE ELECTROMAGNETIC TECH
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