CN108610899B - Sensing coating for gas leakage of GIS (gas insulated switchgear) - Google Patents

Sensing coating for gas leakage of GIS (gas insulated switchgear) Download PDF

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CN108610899B
CN108610899B CN201810267170.4A CN201810267170A CN108610899B CN 108610899 B CN108610899 B CN 108610899B CN 201810267170 A CN201810267170 A CN 201810267170A CN 108610899 B CN108610899 B CN 108610899B
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parts
coating
agent
organic silicon
gis
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CN108610899A (en
Inventor
韩丽
王强
刘玲
孙建新
马东春
高世德
孙凯
王建伟
熊鹏
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Wuhan Xinyunwei Photoelectric Technology Co ltd
Jinzhong Power Supply Co of State Grid Shanxi Electric Power Co Ltd
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Wuhan Xinyunwei Photoelectric Technology Co ltd
Jinzhong Power Supply Co of State Grid Shanxi Electric Power Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • C09D163/10—Epoxy resins modified by unsaturated compounds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/65—Additives macromolecular
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2227—Oxides; Hydroxides of metals of aluminium
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2289—Oxides; Hydroxides of metals of cobalt
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
    • C08L2205/16—Fibres; Fibrils

Abstract

The invention discloses a perception coating for gas leakage of GIS equipment, which is prepared from the following raw materials, by weight, 30-50 parts of organic silicon modified epoxy acrylic acid, 0.2 part of cobalt oxide crystal, 2 parts of water, 3-5 parts of cellulose nanofibril, 60 parts of bismuth vanadate, 20-30 parts of polyvinyl alcohol, 18 parts of aluminum oxide, 12 parts of sea foam powder, 20-30 parts of talcum powder, 20 parts of mica powder, 6-10 parts of organic silicon coupling agent, 20-30 parts of dimethylbenzene, 2-4 parts of dispersing agent, 1-3 parts of anti-settling agent, 3-5 parts of defoaming agent, and Bi2WO60.2 part.

Description

Sensing coating for gas leakage of GIS (gas insulated switchgear)
Technical Field
The invention relates to a sensing coating for gas leakage of GIS equipment, and belongs to the technical field of coatings.
Background
As sulfur hexafluoride (SF6) gas insulation media are increasingly widely used in high-voltage electrical equipment, gas leakage is more and more heavy to repair, and SF6 gas leakage becomes one of important factors influencing the operation safety of GIS electrical equipment. The leakage reasons of the SF6 gas are many, the leakage reasons can be classified into the aspects of selection processing and assembly of equipment production materials, field installation, design defects of equipment, aging, damage and use of sealing materials and the like according to the conclusion of production, installation and use links of sulfur hexafluoride equipment, and the existing leakage detection technical means not only has huge workload, but also cannot find the position of a leakage point at the first time and cannot guide the operation, maintenance and overhaul work of the equipment. With the continuous improvement of the technical requirements of sulfur hexafluoride leakage detection, finding a technical means capable of effectively detecting the leakage state of sulfur hexafluoride in real time has very important significance for promoting production safety and even operation safety of a power grid.
At present, research results of various research institutions at home and abroad on the aspect of GIS equipment leakage perception coatings are few. The project is based on the actual production, a research method combining theoretical research, sampling test and field operation is adopted, the leakage sensing coating special for the GIS is developed for the field test, and the position of a leakage point is accurately judged through the change of color, so that theoretical and practical basis is provided for timely detection of gas leakage of the GIS.
The invention provides technical support for gas leakage prevention and early warning of the GIS, can directly guide the model selection and operation maintenance of the GIS equipment, can find the hidden danger of the equipment caused by slow leakage of a gas chamber sand hole and the like in time, provides accurate early warning information for maintenance and first-aid repair of the equipment, and has great significance for ensuring the safe and stable operation of the GIS equipment.
The gas leakage detection color-changing coating is prepared, the optimal preparation conditions are selected by researching different color-changing pigments, fillers, pigment ratios, the content of the color-changing pigments, the amount of epoxy resin and organic silicon contained in the base paint required by the coating and the influence of the technical process of coating preparation on the color-changing coating, and a new formula and a new process are innovatively developed.
The invention designs two coating application modes, namely a tape mode with a coating layer and a tank mode capable of spraying, performs field test to verify the feasibility of the technical application, further optimizes the development technology of the color-changing coating through inductive analysis of field data, summarizes experience, and formulates a leakage judgment method based on perception coating.
Disclosure of Invention
The invention aims to provide a perception coating for GIS equipment gas leakage.
The technical problem to be solved by the invention can be realized by the following technical scheme.
The present inventors have studied the color development, corrosion and other properties of a cobalt metal compound which reacts with SF6 and its characteristic decomposition products to form a color-changing compound, and as a result, have found that a color-developing paint containing a product of cobalt chloride hydrolyzed as a color former is the best.
Although the leakage point may only contain a trace amount of sulfur acid gas, the leakage point reacts with a color former (cobalt oxide crystal) in the coating to generate obvious color change along with the increase of time, and the position of the leakage point can be accurately judged according to the color change occurrence point. The magnitude of the leakage point can be determined from the rate of color change.
According to the color-changing mechanism and by combining the current process flow of coating production and processing at home and abroad, the invention develops more sufficient laboratory research on the preparation of the color-changing coating.
The whole color-changing coating comprises three parts of a base material, a pigment (a color former) and a filler, and the preparation technology of each part is improved to a certain extent according to the field situation of practical application.
A perception coating for GIS equipment gas leakage is characterized in that,
the paint is prepared from the following raw materials, by weight, 30-50 parts of organic silicon modified epoxy acrylic acid, 0.2 part of cobalt oxide crystal, 2 parts of water, 3-5 parts of cellulose nanofibril, 60 parts of bismuth vanadate, 20-30 parts of polyvinyl alcohol, 18 parts of aluminum oxide, 12 parts of sea foam powder, 20-30 parts of talcum powder, 20 parts of mica powder, 6-10 parts of organic silicon coupling agent, 20-30 parts of dimethylbenzene, 2-4 parts of dispersing agent, 1-3 parts of anti-settling agent, 3-5 parts of defoaming agent, and Bi2WO60.2 part.
According to the selected formula, the organic silicon modified epoxy acrylic acid color-changing coating is prepared according to the operation of the coating preparation process flow.
Generally, a color former in a coatingThe (cobalt oxide crystal) has short service life after being sprayed, generally the color development function is basically disappeared after 6-10 months, the invention adopts innovative formula proportion, in particular the cellulose nano-fibril and Bi2WO6The addition of the additive in a specific proportion in the whole formula can greatly prolong the service life to more than 18 months.
The invention has the advantages that:
the invention provides a novel GIS equipment leakage perception coating. The application of the technology can obviously reduce the workload of leakage detection work of the GIS equipment, improve the working efficiency and provide a feasible technical means for searching and early warning the gas leakage point of the GIS tank body. If a leak occurs, the leak will produce a green spot. The project practicability is strong, the technology is advanced, the project research result not only provides specific technical guidance for GIS equipment operation and maintenance personnel, but also can effectively guide the design, production and assembly of equipment manufacturers. In addition, the coating has long service life and convenient use.
Detailed Description
The following examples of the present invention are described in detail, and are only for the purpose of illustrating the present invention and are not to be construed as limiting the present invention.
Specific examples of the present invention are described below.
Example 1
A perception coating for GIS equipment gas leakage is characterized in that,
the paint is prepared from the following raw materials, by weight, 30 parts of organic silicon modified epoxy acrylic acid, 0.2 part of cobalt oxide crystal, 2 parts of water, 3 parts of cellulose nanofibril, 60 parts of bismuth vanadate, 20 parts of polyvinyl alcohol, 18 parts of aluminum oxide, 12 parts of sea foam powder, 20 parts of talcum powder, 20 parts of mica powder, 6 parts of organic silicon coupling agent, 20 parts of dimethylbenzene, 2 parts of dispersing agent, 1 part of anti-settling agent, 3 parts of defoaming agent, and Bi2WO60.2 part.
If a leak occurs, the leak will produce a green spot. At a coating thickness of 0.2cm, the discoloration function began to fade at 18 months.
Example 2:
a perception coating for GIS equipment gas leakage is characterized in that,
the paint is prepared from raw materials of, by weight, 50 parts of organic silicon modified epoxy acrylic acid, 0.2 part of cobalt oxide crystal, 2 parts of water, 5 parts of cellulose nanofibril, 60 parts of bismuth vanadate, 30 parts of polyvinyl alcohol, 18 parts of aluminum oxide, 12 parts of sea foam powder, 30 parts of talcum powder, 20 parts of mica powder, 10 parts of organic silicon coupling agent, 30 parts of dimethylbenzene, 4 parts of dispersing agent, 3 parts of anti-settling agent, 5 parts of defoaming agent, and Bi2WO60.2 part.
If a leak occurs, the leak will produce a green spot. At a coating thickness of 0.2cm, the discoloration function began to fade at 19 months.
Example 3
A perception coating for GIS equipment gas leakage is characterized in that,
the paint is prepared from the following raw materials, by weight, 40 parts of organic silicon modified epoxy acrylic acid, 0.2 part of cobalt oxide crystal, 2 parts of water, 4 parts of cellulose nanofibril, 60 parts of bismuth vanadate, 28 parts of polyvinyl alcohol, 18 parts of aluminum oxide, 12 parts of sea foam powder, 26 parts of talcum powder, 20 parts of mica powder, 8 parts of organic silicon coupling agent, 26 parts of xylene, 3 parts of dispersing agent, 2 parts of anti-settling agent, 4 parts of defoaming agent, and Bi2WO60.2 part.
If a leak occurs, the leak will produce a green spot. At a coating thickness of 0.2cm, the discoloration function began to fade at 23 months.
Example 4
Comparative example 1: without adding Bi2WO6：
A perception coating for GIS equipment gas leakage is characterized in that,
the material comprises, by weight, 40 parts of organic silicon modified epoxy acrylic acid, 0.2 part of cobalt oxide crystal, 2 parts of water, 4 parts of cellulose nanofibril, 60 parts of bismuth vanadate, 28 parts of polyvinyl alcohol, 18 parts of aluminum oxide, 12 parts of sea foam powder, 26 parts of talcum powder, 20 parts of mica powder, 8 parts of organic silicon coupling agent, 26 parts of dimethylbenzene, 3 parts of dispersing agent, 2 parts of anti-settling agent and 4 parts of defoaming agent.
At a coating thickness of 0.2cm, the discoloration function began to fade at 6 months.
Example 5
Comparative example 2, without cellulose nanofibrils:
a perception coating for GIS equipment gas leakage is characterized in that,
the paint is prepared from the following raw materials, by weight, 40 parts of organic silicon modified epoxy acrylic acid, 0.2 part of cobalt oxide crystal, 2 parts of water, 60 parts of bismuth vanadate, 28 parts of polyvinyl alcohol, 18 parts of aluminum oxide, 12 parts of sea foam powder, 26 parts of talcum powder, 20 parts of mica powder, 8 parts of organic silicon coupling agent, 26 parts of xylene, 3 parts of dispersing agent, 2 parts of anti-settling agent, 4 parts of defoaming agent, and Bi2WO60.2 part.
At a coating thickness of 0.2cm, the discoloration function began to fade at 7 months.
Example 6
Comparative example 3, cellulose nanofibrils and Bi2WO6The proportion is not right:
the paint is prepared from the following raw materials, by weight, 40 parts of organic silicon modified epoxy acrylic acid, 0.2 part of cobalt oxide crystal, 2 parts of water, 2 parts of cellulose nanofibril, 60 parts of bismuth vanadate, 28 parts of polyvinyl alcohol, 18 parts of aluminum oxide, 12 parts of sea foam powder, 26 parts of talcum powder, 20 parts of mica powder, 8 parts of organic silicon coupling agent, 26 parts of xylene, 3 parts of dispersing agent, 2 parts of anti-settling agent, 4 parts of defoaming agent, and Bi2WO60.4 part.
At a coating thickness of 0.2cm, the discoloration function began to fade at 7 months.
As shown above, the novel perception coating has good color change effect, long service life and stability.
It should be understood, however, that the foregoing description is only a preferred embodiment of the invention,
variations that do not depart from the gist of the invention are intended to be within the scope of the invention.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (1)

1. A perception coating for GIS equipment gas leakage is characterized in that,
the paint is prepared from the following raw materials, by weight, 30-50 parts of organic silicon modified epoxy acrylic acid, 0.2 part of cobalt oxide crystal, 2 parts of water, 3-5 parts of cellulose nanofibril, 60 parts of bismuth vanadate, 20-30 parts of polyvinyl alcohol, 18 parts of aluminum oxide, 12 parts of sea foam powder, 20-30 parts of talcum powder, 20 parts of mica powder, 6-10 parts of organic silicon coupling agent, 20-30 parts of dimethylbenzene, 2-4 parts of dispersing agent, 1-3 parts of anti-settling agent, 3-5 parts of defoaming agent, and Bi2WO60.2 part.
CN201810267170.4A 2018-03-28 2018-03-28 Sensing coating for gas leakage of GIS (gas insulated switchgear) Active CN108610899B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111117491A (en) * 2019-12-27 2020-05-08 国网浙江省电力有限公司宁波供电公司 GIS equipment gas leakage perception coating and preparation process thereof
CN111509608B (en) * 2020-04-23 2021-11-16 广东电网有限责任公司东莞供电局 GIS equipment

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101871833A (en) * 2009-04-23 2010-10-27 Abb研究有限公司 Sf6 gas leakage detection method and material
CN106995632A (en) * 2017-05-22 2017-08-01 湖南省湘电试验研究院有限公司 The production method of fault diagnosis method and thermo colour and the coating

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Publication number Priority date Publication date Assignee Title
BR102013002517A2 (en) * 2013-02-01 2014-09-09 Termopernambuco S A INORGANIC THERMOCHROME ADDITIVE USED AS SENSOR IN THE PREVENTION OF SURGE IN ELECTRICAL DEVICES

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101871833A (en) * 2009-04-23 2010-10-27 Abb研究有限公司 Sf6 gas leakage detection method and material
CN106995632A (en) * 2017-05-22 2017-08-01 湖南省湘电试验研究院有限公司 The production method of fault diagnosis method and thermo colour and the coating

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