CN109767884B - Manufacturing method of GI L insulator with surface conductance gradient distribution - Google Patents
Manufacturing method of GI L insulator with surface conductance gradient distribution Download PDFInfo
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- CN109767884B CN109767884B CN201811638105.4A CN201811638105A CN109767884B CN 109767884 B CN109767884 B CN 109767884B CN 201811638105 A CN201811638105 A CN 201811638105A CN 109767884 B CN109767884 B CN 109767884B
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- insulator
- truncated cone
- circular truncated
- cone insulator
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- 239000012212 insulator Substances 0.000 title claims abstract description 65
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 239000002344 surface layer Substances 0.000 claims abstract description 10
- 230000005684 electric field Effects 0.000 claims abstract description 6
- 238000003682 fluorination reaction Methods 0.000 claims description 21
- 239000002390 adhesive tape Substances 0.000 claims description 14
- 239000004642 Polyimide Substances 0.000 claims description 12
- 229920001721 polyimide Polymers 0.000 claims description 12
- 238000011282 treatment Methods 0.000 claims description 12
- 239000010410 layer Substances 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 5
- 230000032798 delamination Effects 0.000 claims 1
- 239000003822 epoxy resin Substances 0.000 abstract description 4
- 229920000647 polyepoxide Polymers 0.000 abstract description 4
- 238000004381 surface treatment Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Abstract
The invention discloses a manufacturing method of a GI L insulator with surface conductance gradient distribution, which is based on the surface gradient layered design of an epoxy resin insulator, wherein a fluorinated surface layer of a circular truncated cone insulator is in gradient distribution by utilizing fluorinated surface treatment, so that the circular truncated cone insulator has surface conductance gradient distribution, the electric field distribution of the circular truncated cone insulator is homogenized, the insulating property of the GI L insulator and the overall reliability of a power transmission system are optimized, and the manufacturing method has important value and significance for optimizing the property of the GI L insulator.
Description
Technical Field
The invention belongs to the field of high-voltage equipment manufacturing, and particularly relates to a manufacturing method of a GI L insulator with surface conductance gradient distribution.
Background
However, insulators poured by epoxy resin always face the problem of serious uneven electric field distribution caused by charge accumulation of a gas-solid interface, and accidents are easily caused.
Disclosure of Invention
Based on the gradient layered design of the surface of the epoxy resin insulator, the fluorinated surface layer of the circular truncated cone insulator is in gradient distribution by utilizing fluorinated surface treatment, so that the circular truncated cone insulator has the gradient distribution of the surface conductivity, the electric field distribution of the circular truncated cone insulator is homogenized, and the insulation performance of the GI L insulator and the overall reliability of a power transmission system are optimized.
The purpose of the invention is realized by the following technical scheme:
a manufacturing method of a GI L insulator with surface conductance gradient distribution comprises the following steps:
(1) according to the gradient distribution of n layers on the surface, the circular platform insulator is divided into n annular areas from top to bottom in equal height, the (n-1) annular areas from bottom to top are pasted with polyimide adhesive tapes, n is an integer and is more than or equal to 2;
(2) placing the circular truncated cone insulator in a fluorination closed reaction kettle, and carrying out fluorination treatment for t min (t > 0) at room temperature, namely forming a fluorinated surface layer in the uppermost annular area which is not covered with the adhesive tape on the surface of the circular truncated cone insulator;
(3) taking out the circular truncated cone insulator from the fluorination closed reaction kettle, taking down the adhesive tape, and adhering polyimide adhesive tapes to (n-2) annular areas from bottom to top;
(4) placing the circular truncated cone insulator in a fluorination closed reaction kettle, and carrying out fluorination treatment at room temperature for t min, namely forming a fluorinated surface layer in the uppermost two-layer annular area on the surface of the circular truncated cone insulator, which is not covered by the adhesive tape;
(5) by repeating the operations of adhering the polyimide tape, fluorinating the circular truncated cone insulator and taking off the tape in the same way, and performing (n-1) fluorination treatment to enable n annular regions from top to bottom of the circular truncated cone insulator to be respectively fluorinated for [ t (n-1) ], [ t (n-2) ], …, t and 0min, so that the circular truncated cone insulator with the surface conductance gradient distribution can be obtained.
Furthermore, the circular truncated cone insulator is subjected to surface fluorination treatment, so that the thickness of a fluorinated layer and the surface conductivity distribution condition are changed, and the electric field distribution in the circular truncated cone insulator is homogenized.
Furthermore, the surface conductivity distribution of the circular truncated cone insulator is determined by surface gradient layering.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
according to the method, the fluorinated surface of the circular truncated cone insulator is treated, fluorinated layers with different thicknesses are formed at different positions on the surface of the circular truncated cone insulator according to a design scheme, so that the surface layer of the circular truncated cone insulator is uneven in conductance and presents gradient distribution, and the performance of the circular truncated cone insulator is optimized.
Drawings
FIG. 1 is a schematic diagram of a design of a circular truncated cone insulator with three layers of surface conductivity in gradient distribution;
fig. 2 is a schematic structural diagram of the epoxy resin circular truncated cone insulator with surface conductance gradient distribution prepared in this embodiment.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention relates to a manufacturing method of a GI L insulator with surface conductivity gradient distribution, which is characterized in that a circular truncated cone insulator is subjected to surface fluorination treatment, the thickness of a fluorinated layer and the surface conductivity distribution condition are changed, and the electric field distribution of the circular truncated cone insulator is homogenized, wherein the surface conductivity distribution condition of the circular truncated cone insulator is determined by surface gradient layering.
The specific surface treatment process is as follows:
(1) according to the gradient distribution of 3 layers on the surface, the circular platform insulator is divided into 3 annular areas from top to bottom in equal height, polyimide adhesive tapes are adhered to the 2 annular areas from bottom to top, the diameter of the bottom of the circular platform insulator is 80cm, the diameter of the top of the circular platform insulator is 27cm, and the thickness of each layer of gradient layering is 10 cm.
(2) Placing the circular truncated cone insulator in a fluorination closed reaction kettle, and carrying out fluorination treatment for 20min at room temperature, namely forming a fluorinated surface layer in the uppermost annular region on the surface of the circular truncated cone insulator, which is not covered by the adhesive tape;
(3) taking out the circular truncated cone insulator from the fluorination closed reaction kettle, taking down the adhesive tape, and adhering polyimide adhesive tapes to 1 annular region from bottom to top;
(4) placing the circular truncated cone insulator in a fluorination closed reaction kettle, and carrying out fluorination treatment for 10min at room temperature, namely forming a fluorinated surface layer in the uppermost two-layer annular area on the surface of the circular truncated cone insulator, which is not covered by the adhesive tape;
(5) through 2 fluorination treatments, the top-down 3 annular areas of the circular truncated cone insulator are respectively fluorinated for 20min, 10min and 0min, and the circular truncated cone insulator with the surface conductance distributed in a gradient manner can be obtained. See fig. 1 and 2.
The present invention is not limited to the above-described embodiments. The foregoing description of the specific embodiments is intended to describe and illustrate the technical solutions of the present invention, and the above specific embodiments are merely illustrative and not restrictive. Those skilled in the art can make many changes and modifications to the invention without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (3)
1. A GI L insulator manufacturing method with surface conductance gradient distribution is characterized in that the GI L insulator is a circular truncated cone insulator, and the method comprises the following steps:
(1) according to the gradient distribution of n layers on the surface, the circular table insulator is divided into n annular areas from top to bottom in equal height, the (n-1) annular areas from bottom to top are pasted with polyimide adhesive tapes, n is an integer and is more than or equal to 2;
(2) placing the circular truncated cone insulator in a fluorination closed reaction kettle, and carrying out fluorination treatment at room temperature for t min, wherein t is more than 0, namely forming a fluorinated surface layer in the uppermost annular area of the surface of the circular truncated cone insulator, which is not covered with the polyimide adhesive tape;
(3) taking out the circular truncated cone insulator from the fluorination closed reaction kettle, taking down the polyimide adhesive tape, and adhering the polyimide adhesive tape to (n-2) annular areas from bottom to top;
(4) placing the circular truncated cone insulator in a fluorination closed reaction kettle, and carrying out fluorination treatment at room temperature for t min, namely forming a fluorinated surface layer in the uppermost annular region which is not covered with the polyimide tape on the surface of the circular truncated cone insulator;
(5) repeating the operations of adhering the polyimide tape, fluorinating the circular truncated cone insulator and taking off the polyimide tape by analogy, and respectively fluorinating n annular regions from top to bottom of the circular truncated cone insulator by (n-1) times of fluorination treatment [ t (n-1) ], [ t (n-2) ], …, t, 0min and t & gt 0 to obtain the GI L insulator with the surface conductance gradient distribution.
2. The method for manufacturing the GI L insulator with surface conductivity gradient distribution according to claim 1, wherein the electric field distribution in the truncated cone insulator is homogenized by performing surface fluorination treatment on the truncated cone insulator to change the thickness of the fluorinated layer and the surface conductivity distribution.
3. The method of claim 1, wherein the conductivity distribution of the surface layer of the insulator is determined by surface gradient delamination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811638105.4A CN109767884B (en) | 2018-12-29 | 2018-12-29 | Manufacturing method of GI L insulator with surface conductance gradient distribution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811638105.4A CN109767884B (en) | 2018-12-29 | 2018-12-29 | Manufacturing method of GI L insulator with surface conductance gradient distribution |
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| Publication Number | Publication Date |
|---|---|
| CN109767884A CN109767884A (en) | 2019-05-17 |
| CN109767884B true CN109767884B (en) | 2020-07-10 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111261347A (en) * | 2020-01-21 | 2020-06-09 | 天津大学 | High-voltage direct-current basin-type insulator surface roughness functional gradient electric field homogenization method |
| CN111326299A (en) * | 2020-03-25 | 2020-06-23 | 天津大学 | Continuous gradient surface fluorination modification device and method for polymer material |
| CN111460642B (en) * | 2020-03-25 | 2022-07-01 | 天津大学 | High-voltage GIL gas-solid interface electric field distribution optimization method |
| CN112892932B (en) * | 2021-01-25 | 2021-12-14 | 广东新时代包装材料有限公司 | Transparent adhesive tape preparation process and transparent adhesive tape prepared by same |
| CN113628816B (en) * | 2021-08-18 | 2022-12-20 | 天津大学 | GIL/GIS metal particle lifting inhibition method based on insulator surface layer function gradient modification |
| CN115050526B (en) * | 2022-06-06 | 2023-06-27 | 清华大学 | Pouring method of layered basin-type insulator |
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| CN104804211A (en) * | 2015-04-23 | 2015-07-29 | 商丘师范学院 | Method for inhibiting charge accumulation on polyimide insulation film |
| CN108447630B (en) * | 2018-02-28 | 2019-12-31 | 天津大学 | GIL insulator design method with surface conductance two-dimensional linear gradient distribution |
| CN108484954B (en) * | 2018-02-28 | 2020-01-07 | 天津大学 | GIL insulator design method with surface conductance two-dimensional U-shaped gradient distribution |
| CN108320874B (en) * | 2018-03-16 | 2020-01-07 | 天津大学 | Method for inhibiting GIS insulator surface charge accumulation based on linear gradient processing |
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