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Method for improving nondestructive testing accuracy of carbon fiber lead

A carbon fiber wire, non-destructive testing technology, applied in the field of electric power, can solve the problems of economic loss, great safety, damage to the inner mandrel, etc.

Inactive Publication Date: 2015-01-28
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This means that if the wires are not strictly operated in accordance with the specifications during the production and processing of the mandrel and the stranding, crimping of fittings, and wire hanging construction, especially when the production and construction personnel have not been exposed to professional training, the traditional steel-reinforced aluminum stranding is still used. The production of the wire and the wire hanging mode will easily cause damage to the inner mandrel. Due to the existence of the outer layer of aluminum stranded wire, it is difficult for the operator to intuitively find out that if the damaged wire is directly hung on the net, there will be a large potential safety hazards, resulting in huge economic losses

Method used

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  • Method for improving nondestructive testing accuracy of carbon fiber lead
  • Method for improving nondestructive testing accuracy of carbon fiber lead

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Carbon fiber is used as a reinforcing material, thermosetting resin is used as a matrix, and nanoscale heavy metal compound powder is used as a developer to produce carbon fiber composite wire mandrels. , solidified, cooled, and shaped under the traction of the tractor, and then the product is stranded to obtain the finished product. The content of the developer is 5 wt%, and the imaging effect of the internal mandrel is observed by an X-ray nondestructive testing device.

Embodiment 2

[0026] Carbon fiber is used as a reinforcing material, thermosetting resin is used as a matrix, and nanoscale heavy metal powder is used as a developer to produce carbon fiber composite wire mandrels. The details are as follows: 100 pieces of 12K carbon fiber filaments enter the preforming mold and forming mold through the glue tank with developer added. Under the traction of the tractor, it is solidified, cooled and formed, and then the product is twisted to obtain the finished product. The content of the developer is 10 wt%, and the imaging effect of the internal mandrel is observed by an X-ray nondestructive testing device.

Embodiment 3

[0028] Carbon fiber is used as a reinforcing material, thermosetting resin is used as a matrix, and nano-scale heavy metal powder is used as a developer to produce carbon fiber composite wire mandrels. The details are as follows: 66 pieces of 12K carbon fiber filaments enter the preforming mold and forming mold through the glue tank with developer added, Under the traction of the tractor, it is solidified, cooled and formed, and then the product is twisted to obtain the finished product. The content of the developer is 15 wt%, and the imaging effect of the internal mandrel is observed by an X-ray nondestructive testing device.

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Abstract

The invention relates to a method for improving the nondestructive testing accuracy of a carbon fiber lead. The method comprises the following steps: adding resin and a developing agent in high-carbon fiber, carrying out pull-extrusion molding to form a carbon fiber composite lead core rod, or coating the surface of the lead core rod made of the carbon fiber and the resin by the developing agent, and then performing X-ray nondestructive testing. According to the method, an image can be directly developed, the development effect is good, the storage is convenient, one-time flaw detection during flaw detection can be performed, and convenience and rapidness are realized.

Description

technical field [0001] The invention relates to a method for non-destructive detection of carbon fiber wires, which is suitable for online non-destructive detection in the process of erecting wires and is widely used in the field of electric power. Background technique [0002] China's land resources are limited, the choice of transmission corridors is restricted, and the need to increase the transmission power of a unit corridor is increasingly urgent. For overhead transmission lines whose transmission capacity depends on the thermal stability of the conductors, replacing high-performance conductors can significantly improve the transmission capacity of the line. With the 13 With the promulgation of national standards for carbon fiber mandrels in 2010, the production and application of wires have gradually formed a system and standardization, and have gradually been widely recognized by the State Grid and users. Since the end of 2013, the state has issued 3 batches of carbo...

Claims

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Application Information

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IPC IPC(8): G01N23/00G01N1/28
Inventor 王永伟朱波曹伟伟乔琨刘玉兰
Owner SHANDONG UNIV
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