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An insulator with a textured surface of holes and microgrooves and a preparation method thereof

An insulator and texturing technology, which is applied in the field of insulators with a textured surface of holes and micro-grooves and its preparation, can solve the problems that it is difficult to meet the vacuum insulation requirements of high-voltage devices, the insulators have low surface breakdown voltage resistance, and low reliability. , to achieve the effect of easy control, few influencing factors, and inhibition of multiplication

Active Publication Date: 2018-10-26
NORTHWEST INST OF NUCLEAR TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the technical problems of low surface breakdown resistance, low reliability, poor repeatability, and difficulty in meeting the vacuum insulation requirements of high-voltage devices in the prior art, and to provide a textured insulator with holes and microgrooves. Surface polymer insulator and method for preparing same

Method used

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  • An insulator with a textured surface of holes and microgrooves and a preparation method thereof
  • An insulator with a textured surface of holes and microgrooves and a preparation method thereof
  • An insulator with a textured surface of holes and microgrooves and a preparation method thereof

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Embodiment 1

[0040] see figure 1 , figure 2 , at room temperature, according to image 3 The flow chart shown carries out the surface texturing process of polymer insulators. Firstly, the machined plexiglass (polymethyl methacrylate) cylindrical insulator body 1 with a diameter of 40 mm and a height of 10 mm is cleaned and installed on a rotary table. Secondly, a carbon dioxide laser with a wavelength of 10640nm is used, the pulse frequency is set to 150kHz, the power is 30W, the scanning rate of the laser beam is 50mm / s, and the number of scanning is 5 times. Focus the light beam on the surface of the material, and carve an array of parallel linear microgrooves 2 in the center of the material, wherein a single microgroove 2 has a width of 150 microns, a depth of 100 microns, and a spacing of 50 microns; The shortest distance between them is 1mm, and there are 40 parallel micro-groove rings in total. Again, choose a carbon dioxide laser with a wavelength of 10640nm, set the laser powe...

Embodiment 2

[0042] At room temperature, clean the machined epoxy resin cylindrical insulator body with a diameter of 40 mm and a height of 10 mm, and install it on a rotary table. A fiber laser with a wavelength of 1064nm is used, the pulse frequency is set to 100kHz, the power is 20W, the scanning rate of the laser beam is 30mm / s, and the number of scanning is 3 times. Focus the light beam on the surface of the material, and carve an array of parallel linear microgrooves in the center of the material. Among them, the width of a single microgroove is 80 microns, the depth is 100 microns, and the pitch is 80 microns; the shortest distance between the microgroove array and the end face of the cylinder is 1mm, and a total of 50 parallel microgroove rings are formed. After the engraving is completed, reduce the laser power to 3W, and perform hole-making treatment on the surface of the microgroove. A three-dimensional profilometer is used to measure the profile of the microgroove and the size...

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Abstract

The invention discloses an insulator which possesses a hole microgroove texturing surface and is applied to the high voltage insulating material technology field and a manufacturing method thereof. In the prior art, a surface breakdown voltage resistance ability is poor; reliability is not high and repeatability is poor, which is difficult to satisfy a vacuum insulation requirement of a high voltage apparatus; and there are other technical problems. By using the insulator and the method of the invention, the above problems are mainly solved. The insulator comprises an insulator body. The insulator body is made of a polymer material and a surface is woven with periodically parallel V-shaped microgroove arrays. Microgroove surfaces are uniformly distributed with holes with a micron order size. The microgrooves are etched by a laser. And the holes are formed through ablation by the laser. The manufacturing method comprises the following steps of using laser grooving to etch the microgroove arrays on an insulator body surface; and using laser ablation so as to form the holes on the microgroove surfaces. The insulator and the method can be applied to the vacuum high-voltage insulation device field and the high-voltage insulation fields under other environments.

Description

technical field [0001] The invention belongs to the technical field of high-voltage electrical insulating materials, and in particular relates to an insulator with a textured surface of hole microgrooves and a preparation method thereof. Background technique [0002] An insulator is a component used for electrical insulation and mechanical fixing. Its function is to connect conductors with different potentials to each other mechanically and to insulate them electrically. In vacuum high-voltage electrical equipment, with the increase of operating voltage, the vacuum surface flashover phenomenon that occurs on the surface of insulators has become a bottleneck factor that limits the development of equipment performance. The flashover along the surface makes the withstand voltage of the insulator far lower than its volume breakdown voltage, and much lower than the vacuum gap at the same distance. With the increasingly prominent role of high-power pulse technology in the nationa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B17/50H01B19/04
CPCH01B17/50H01B19/04
Inventor 刘文元霍艳坤柯昌凤陈昌华蔡利兵孙钧汤俊萍
Owner NORTHWEST INST OF NUCLEAR TECH
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