CN113683960A

CN113683960A - Insulating fault detection coating structure of power switch cabinet

Info

Publication number: CN113683960A
Application number: CN202110906437.1A
Authority: CN
Inventors: 唐彬; 梁沁沁; 罗宗昌; 王佳琳; 朱立平; 韩方源; 罗传胜; 伍任能; 覃剑
Original assignee: Electric Power Research Institute of Guangxi Power Grid Co Ltd
Current assignee: Electric Power Research Institute of Guangxi Power Grid Co Ltd
Priority date: 2021-08-09
Filing date: 2021-08-09
Publication date: 2021-11-23

Abstract

The invention discloses an insulation fault detection coating structure of a power switch cabinet, which is characterized by comprising an adhesion layer and a functional color-changing layer; the adhesion layer is adhered to the insulating layer substrate; the functional color-changing layer is sprayed on the attachment layer; the functional color changing layer comprises an irreversible temperature-sensitive color changing coating and an irreversible photochromic color changing coating; one part of the adhesion layer sprayed is an irreversible temperature-sensitive color-changing coating, and the other part of the adhesion layer is an irreversible photochromic color-changing coating. According to the invention, by utilizing the color change effect of the functional color change layer, when the insulating layer is subjected to thermal aging, the color of the irreversible temperature-sensitive color change coating is changed due to an excessively high temperature, so that the fault of the part is prompted; when the insulating layer takes place arc discharge and leads to puncturing, the color change takes place for irreversible photochromic coating receives the arc discharge influence, when the maintainer opens the cubical switchboard and overhauls, through the position that seeks the color change, can be fast accurate effectual find the position of breaking down.

Description

Insulating fault detection coating structure of power switch cabinet

Technical Field

The invention relates to the technical field of power engineering, in particular to an insulation fault detection coating structure of a power switch cabinet.

Background

The power switch cabinet is easy to break down in the operation process, so that equipment is damaged and power is interrupted, and the safe and stable operation of power equipment is greatly influenced. Analysis shows that the main reason of the fault in the switch cabinet is interphase short circuit caused by aging failure of the insulating layer at the electrified part. The causes of aging failure of the insulating layer are divided into two types: thermal aging and arc breakdown. At present, no effective product is available on the market, the reason and the type of the aging failure of the insulating layer can be judged rapidly and effectively, the switch cabinet is provided with more positions which are easy to fail, and the positions where the failure occurs are difficult to judge timely and accurately.

Disclosure of Invention

The invention aims to provide an insulation fault detection coating structure of a power switch cabinet, which can solve the problems that the reason of the aging and the failure of an insulation layer cannot be effectively judged and the fault position cannot be accurately judged in the prior art.

The purpose of the invention is realized by the following technical scheme:

the invention provides an insulation fault detection coating structure of a power switch cabinet, which comprises an adhesion layer and a functional color-changing layer, wherein the adhesion layer is coated with a metal layer; the adhesion layer is adhered to the insulating layer substrate; the functional color-changing layer is sprayed on the attachment layer;

the functional color changing layer comprises an irreversible temperature-sensitive color changing coating and an irreversible photochromic color changing coating; one part of the adhesion layer sprayed is an irreversible temperature-sensitive color-changing coating, and the other part of the adhesion layer is an irreversible photochromic color-changing coating.

Furthermore, the two ends of the irreversible thermochromic coating and the two ends of the irreversible photochromic coating are in mutual contact, so that the surface of the attachment layer is completely covered by the irreversible thermochromic coating or the irreversible photochromic coating.

Further, the adhesion layer is room temperature vulcanized silicone rubber.

Further, the irreversible thermochromic coating contains poly N-isopropylacrylamide and a polymer matrix.

Further, the irreversible photochromic coating contains indoline benzopyran and a polymer matrix.

The coating structure for detecting the insulation fault of the power switch cabinet sequentially sprays the adhesion layer and the functional color changing layer on the surface of the insulation material (the insulation layer substrate). The adhesion layer adopts room temperature vulcanized silicone rubber, has excellent dielectric constant and good insulating property, is similar to the chemical property of the insulating layer base material, has good adhesion and can keep not to fall off for a long time; the heat conducting fillers such as carbon nano tubes, aluminum oxide, silicon nitride, aluminum nitride, silicon carbide and the like contained in the insulating layer can timely and quickly transfer the heat of the insulating layer to the surface functional color changing layer so as to ensure the accuracy of temperature detection of the insulating layer. The functional color changing layer comprises an irreversible temperature-sensitive color changing coating and an irreversible light-sensitive color changing coating, and when the insulating layer is subjected to thermal aging, the irreversible temperature-sensitive color changing coating is subjected to color change due to overhigh temperature, so that the part is prompted to have a fault; when the insulating layer takes place arc discharge and leads to puncturing, the color change takes place for irreversible photochromic coating receives the arc discharge influence, when the maintainer opens the cubical switchboard and overhauls, through the position that seeks the color change, can be fast accurate effectual find the position of breaking down.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an insulation fault detection coating structure of a power switch cabinet.

The reference numbers are as follows:

1-insulating layer substrate, 2-adhesion layer, 3-functional color changing layer, 31-irreversible temperature sensitive color changing coating and 32-irreversible photochromic sensitive coating.

Detailed Description

The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

The embodiments of the present disclosure are described below with specific examples, and other advantages and effects of the present disclosure will be readily apparent to those skilled in the art from the disclosure in the specification. It is to be understood that the described embodiments are merely illustrative of some, and not restrictive, of the embodiments of the disclosure. The disclosure may be embodied or carried out in various other specific embodiments, and various modifications and changes may be made in the details within the description without departing from the spirit of the disclosure. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

The invention provides an insulation fault detection coating structure of a power switch cabinet, which comprises an adhesion layer 2 and a functional color-changing layer 3; the adhesion layer 2 is adhered to the insulating layer substrate 1; the functional color-changing layer 3 is sprayed on the attachment layer 2;

the functional color changing layer 3 comprises an irreversible temperature-sensitive color changing coating 31 and an irreversible photochromic color-sensitive coating 32; one part of the adhesion layer 2 is sprayed with an irreversible temperature-sensitive color-changing coating 31, and the other part is sprayed with an irreversible photochromic color-changing coating 32.

It should be noted that, too high temperature easily causes the color change of the irreversible thermochromic coating 31, thereby prompting that the part fails; when insulating layer substrate 1 takes place arc discharge and leads to puncturing, irreversible photochromic coating 32 receives the arc discharge influence and takes place the colour change, when the maintainer opens the cubical switchboard and overhauls, through looking for the position that the colour changes, can be fast accurate effectual find the position of breaking down.

Further, in a preferred embodiment of the present application, both ends of the irreversible thermochromic coating 31 and the irreversible photochromic coating 32 are in contact with each other, so that the surface of the adhesion layer 2 completely covers the irreversible thermochromic coating 31 or the irreversible photochromic coating 32.

It should be noted that the irreversible thermochromic coating 31 and the irreversible photochromic coating 32 included in the functional photochromic layer 3 may exist in a contact connection manner distributed at intervals, or one half of the irreversible thermochromic coating 31 may be in contact connection with the other half of the irreversible photochromic coating 32.

Preferably, the adhesion layer 2 is room temperature vulcanized silicone rubber. The room temperature vulcanized silicone rubber has excellent dielectric constant, good insulating property, chemical property similar to that of the insulating layer base material 1, good adhesive force and long-term non-shedding prevention; the heat conduction fillers such as carbon nano tubes, aluminum oxide, silicon nitride, aluminum nitride, silicon carbide and the like contained in the room-temperature vulcanized silicone rubber can timely and quickly transfer the heat of the insulating layer to the surface layer function color changing layer so as to ensure the accuracy of the temperature detection of the insulating layer.

Preferably, the irreversible thermochromic coating 31 includes poly-N-isopropylacrylamide and a polymer matrix. When the insulating layer is subjected to thermal aging, the irreversible thermochromic coating is subjected to color change due to the excessively high temperature, and then the failure of the position is prompted.

Preferably, the irreversible photochromic coating 32 comprises an indoline benzopyran and a polymeric matrix. When the insulating layer takes place arc discharge and leads to puncturing, the color change takes place for irreversible photochromic coating receives the arc discharge influence, when the maintainer opens the cubical switchboard and overhauls, through the position that seeks the color change, can be fast accurate effectual find the position of breaking down.

The working principle of the invention is as follows: the functional color changing layer comprises an irreversible temperature-sensitive color changing coating and an irreversible light-sensitive color changing coating, and when the insulating layer is subjected to thermal aging, the irreversible temperature-sensitive color changing coating is subjected to color change due to overhigh temperature, so that the part is prompted to have a fault; when the insulating layer takes place arc discharge and leads to puncturing, the color change takes place for irreversible photochromic coating receives the arc discharge influence, when the maintainer opens the cubical switchboard and overhauls, through the position that seeks the color change, can be fast accurate effectual find the position of breaking down.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

Claims

1. An insulation fault detection coating structure of a power switch cabinet is characterized by comprising an adhesion layer and a functional color-changing layer; the adhesion layer is adhered to the insulating layer substrate; the functional color-changing layer is sprayed on the attachment layer;

2. The power switch cabinet insulation fault detection coating structure according to claim 1, wherein the irreversible thermochromic coating and the irreversible photochromic coating are in mutual contact at two ends, so that the surface of the attachment layer is fully covered with the irreversible thermochromic coating/the irreversible photochromic coating.

3. The power switchgear insulation fault detection coating structure of claim 1, wherein the adhesion layer is room temperature vulcanized silicone rubber.

4. The power switch cabinet insulation fault detection coating structure according to claim 1 or 2, wherein the irreversible temperature-sensitive color-changing coating contains poly-N-isopropylacrylamide and a polymer matrix.

5. The power switchgear insulation fault detection coating structure of claim 1 or 2, wherein the irreversible photochromic coating contains indoline benzopyran and a polymeric matrix.