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Method for nondestructively measuring cross sectional areas of conductors of power cables

A cross-sectional area and power cable technology, which is applied in the field of non-destructive measurement of the cross-sectional area of ​​power cable conductors, can solve problems such as missed detection, and achieve the effects of ensuring structure, simplifying process, and high accuracy

Inactive Publication Date: 2019-05-07
武汉脉源电气有限公司
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Problems solved by technology

Using DC resistance to reverse the cross-sectional area of ​​the conductor will cause less damage to the cable, but the DC resistance of the conductor is also related to the length of the cable. Some manufacturers falsify the area and length of the conductor at the same time. In this case, this method will miss detection.

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  • Method for nondestructively measuring cross sectional areas of conductors of power cables
  • Method for nondestructively measuring cross sectional areas of conductors of power cables
  • Method for nondestructively measuring cross sectional areas of conductors of power cables

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Embodiment Construction

[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are explanations of the present invention and the present invention is not limited to the following examples.

[0028] see Figure 1-Figure 5 In this embodiment, the non-destructive testing technology can accurately measure the cross-sectional area of ​​the cable 4 conductors, cut off a small section perpendicular to the central axis of the cable 4 to be tested, so that the cross-section is smooth, and use ferric chloride solution to assist in physically cleaning the flash at the new cross-section. The principle is: Cu+2FeCl3=2FeCl2+CuCl2, so the capillary flash of the cable 4 section can be eliminated in a short time by the ferric chloride solution, so as to obtain a relatively flat section, and the image of the section is taken by the camera equipment, because the cable 4. Conductor material and its cladding layer have diff...

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Abstract

The invention discloses a method for nondestructively measuring cross sectional areas of conductors of power cables. According to the method, a small section is cut from an axle wire vertical to a to-be-detected cable; trimming at the new section is cleaned by utilizing ferric chloride solution via a physical manner; and a high-definition image of the cross section is shot by a camera shooting device. A copper material of the cable is different from a coating layer thereof in the aspect of imaging grayscale, so that the cross sectional area of a conductor can be obtained through calculating the number of image points in an imaging area of the copper material. The method is convenient to operate and high in accuracy, does not cause damages to detected objects, and has huge economic benefit.

Description

technical field [0001] The invention belongs to the fields of high-voltage technology, cable detection and applied optics, and more specifically relates to a method for non-destructively measuring the cross-sectional area of ​​a power cable conductor. Background technique [0002] In modern society, electric energy is an indispensable driving force for industrial production and people's life. Power cable is the equipment that must be used in the process of transmitting electric energy and manufacturing electrical equipment, and is a necessity in the future electrification and information society. Power cables are also widely used in my country's engineering construction. In 2014, the sales of the cable industry reached 1.2 trillion yuan. [0003] The cable industry is closely related to the development of my country's national economy, and there are still many problems at this stage. Although the total production capacity of my country's cable industry is high, the product ...

Claims

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Application Information

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IPC IPC(8): G01B21/28
Inventor 赵正涛
Owner 武汉脉源电气有限公司
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