CN111768922A - Coating method of bus insulating layer, bus and power equipment - Google Patents
Coating method of bus insulating layer, bus and power equipment Download PDFInfo
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- CN111768922A CN111768922A CN202010626284.0A CN202010626284A CN111768922A CN 111768922 A CN111768922 A CN 111768922A CN 202010626284 A CN202010626284 A CN 202010626284A CN 111768922 A CN111768922 A CN 111768922A
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- bus
- insulating
- bus bar
- insulating layer
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/0016—Apparatus or processes specially adapted for manufacturing conductors or cables for heat treatment
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/06—Insulating conductors or cables
- H01B13/16—Insulating conductors or cables by passing through or dipping in a liquid bath; by spraying
- H01B13/165—Insulating conductors or cables by passing through or dipping in a liquid bath; by spraying by spraying
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/30—Drying; Impregnating
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/02—Disposition of insulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Installation Of Bus-Bars (AREA)
Abstract
The invention relates to the technical field of electric power, and discloses a coating method of a bus insulating layer, a bus and electric power equipment. The coating method of the bus insulating layer comprises the following steps: heating the bus to a preset temperature range; spraying insulating paint on the surface of the bus; drying the insulating paint on the surface of the bus to form an insulating film; and spraying liquid wax on the outer side of the insulating film to form a wax film. The invention improves the insulating property of the bus, improves the safety, and simultaneously reduces the replacement frequency, thereby reducing the material cost and the working strength of operators.
Description
Technical Field
The invention relates to the technical field of electric power, in particular to a coating method of a bus insulating layer, a bus and electric power equipment.
Background
With the development of society, the living standard of people is continuously improved, and the demand on electric energy is more and more increased. The transformer substation is used as core power equipment in a power system, and plays a vital role in ensuring safe and stable transmission of electric energy. The copper bar is a long conductor with a generally chamfered rectangle section, and plays a role in conveying current and connecting electrical equipment in a circuit. At present, a bus inside an alternating current feeder screen of a transformer substation generally uses a copper bar as the bus, and a thermal shrinkage sleeve is used as an insulating material on the bus to prevent short circuit faults. Because the bus is insulated by the heat-shrinkable sleeve, but the heat-shrinkable sleeve cannot be completely attached to the copper bar, hollowing can occur at a 90-degree corner, a gap can be caused due to the difficulty in complete attachment, insulation hidden danger is generated, and the insulation performance of the bus is greatly reduced; along with the increase of the operation period, the thermal shrinkage sleeve is very easy to fall off to cause short-circuit accidents, and needs to be replaced frequently; moreover, along with the different sizes of the buses, the thermal shrinkable sleeves with different specifications need to be suitable and cut, so that the working strength and the material cost are increased; finally, at the joint of adjacent buses, due to the fact that the connection is achieved through screws, the thermal shrinkage sleeve cannot be used at the position, protection is not comprehensive enough, and the insulation performance of the buses is reduced. The insulating inefficacy of the inside generating line copper bar of transformer substation's alternating current feeder screen can lead to the great improvement of the fault rate of electrical equipment, and insulating destruction can bring very big potential safety hazard for transformer substation's primary equipment and secondary equipment safety and stability's operation.
Accordingly, there is a need for a method for coating a bus bar insulating layer, a bus bar and an electric power device to solve the above problems.
Disclosure of Invention
The invention aims to provide a coating method of a bus insulating layer, a bus and power equipment, which avoid short-circuit accidents caused by aging and falling of the insulating layer, improve the insulating property of the bus, improve the safety, reduce the replacement frequency and further reduce the material cost and the working strength of operators.
In order to achieve the purpose, the invention adopts the following technical scheme:
a coating method of a bus insulating layer comprises the following steps:
heating the bus to a preset temperature range;
spraying insulating paint on the surface of the bus;
drying the insulating paint on the surface of the bus to form an insulating film;
and spraying liquid wax outside the insulating film to form a wax film.
Preferably, before the heating the bus bar, the method further comprises: and cleaning the surface of the bus.
Preferably, in the process of spraying the insulating paint on the surface of the bus bar, the temperature of the bus bar is kept within the preset temperature range until the insulating paint is sprayed.
Preferably, the thickness of the insulating film is 4mm to 6 mm.
Preferably, the spraying of the liquid wax outside the insulating coating further comprises, before forming the wax film: cooling the bus bar to room temperature.
Preferably, the spraying of the liquid wax outside the insulating coating material further includes, after the forming of the wax film: and polishing the outer surface of the wax film.
The bus comprises a bus body and an insulating layer arranged on the bus body, wherein the insulating layer is formed by coating the bus insulating layer by adopting the coating method.
Preferably, the bus bar body is a copper bar.
Preferably, the bus bar is further provided with a flame-retardant layer, and the flame-retardant layer is arranged outside the insulating layer.
An electrical device comprising a bus bar as described above.
The invention has the beneficial effects that:
according to the coating method of the bus insulating layer provided by the embodiment of the invention, firstly, a bus is heated to a preset temperature range, then, the insulating paint is sprayed on the surface of the bus, the insulating paint is dried to form an insulating film, and finally, liquid wax is sprayed on the outer side of the insulating film to form a wax film. The heating bus can make follow-up in-process to the bus spraying insulating coating, utilizes higher temperature to dry insulating coating with higher speed, has reduced follow-up stoving insulating coating's time, has reduced the time cost, has reduced operating personnel's working strength. Insulating coating is sprayed on the surface of the bus, the thermal shrinkable sleeve is replaced by the insulating coating, and the insulating coating can be completely attached to the bus by using a spraying method, so that the short-circuit accident caused by aging and falling of the insulating coating is avoided, the insulating coating can be coated on each part of the bus, the insulating property of the bus is improved, the safety is improved, the fault frequency of power equipment is reduced, the working strength of maintenance personnel is reduced, the potential safety hazard of the power equipment is reduced, the replacement frequency is reduced, and the material cost and the working strength of operating personnel are reduced. And the insulating coating is dried to form an insulating film, so that the insulating film can be stably attached to the bus, and the insulating property of the bus is ensured. Liquid wax is sprayed on the outer side of the insulating film, a wax film is formed on the outer side of the insulating film, the insulating film can be protected by the wax film, the insulating film is prevented from cracking, the oxidation and aging of the insulating film are slowed down, the insulating property of the insulating film is ensured, the service life of the insulating film is prolonged, the replacement frequency is further reduced, and further the material cost and the working strength of operators are reduced.
Drawings
Fig. 1 is a flowchart illustrating main steps of a method for coating a bus bar insulating layer according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating detailed steps of a method for coating a bus bar insulating layer according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
Example one
At present, the thermal shrinkable sleeve is sleeved outside the bus to ensure the insulation performance of the bus, the thermal shrinkable sleeve and the bus are difficult to be completely attached to generate insulation hidden troubles, the insulation performance of the bus is greatly reduced, the thermal shrinkable sleeve needs to be frequently replaced, and the working strength and the material cost of an operator are increased.
In order to solve the above problems, the embodiment provides a method for coating a bus insulating layer, which avoids a short-circuit accident caused by aging and dropping of the insulating layer, improves the insulating property of the bus, improves the safety, and simultaneously reduces the replacement frequency, thereby reducing the material cost and the working strength of operators.
Specifically, as shown in fig. 1, the method for coating a bus bar insulating layer according to the present embodiment includes the following steps:
step one, heating a bus to a preset temperature range;
in the present embodiment, the predetermined temperature range is 150 ℃ to 200 ℃.
Secondly, spraying insulating paint on the surface of the bus;
specifically, the insulating coating used in this embodiment is silicone rubber, which has good insulating properties.
Step three, drying the insulating paint on the surface of the bus to form an insulating film;
and step four, spraying liquid wax on the outer side of the insulating film to form a wax film.
The heating bus can make follow-up in-process to the bus spraying insulating coating, utilizes higher temperature to dry insulating coating with higher speed, has reduced follow-up stoving insulating coating's time, has reduced the time cost, has reduced operating personnel's working strength. Insulating coating is sprayed on the surface of the bus, the thermal shrinkable sleeve is replaced by the insulating coating, and the insulating coating can be completely attached to the bus by using a spraying method, so that the short-circuit accident caused by aging and falling of the insulating coating is avoided, the insulating coating can be coated on each part of the bus, the insulating property of the bus is improved, the safety is improved, the fault frequency of power equipment is reduced, the working strength of maintenance personnel is reduced, the potential safety hazard of the power equipment is reduced, the replacement frequency is reduced, and the material cost and the working strength of operating personnel are reduced. And the insulating coating is dried to form an insulating film, so that the insulating film can be stably attached to the bus, and the insulating property of the bus is ensured. Liquid wax is sprayed on the outer side of the insulating film, a wax film is formed on the outer side of the insulating film, the insulating film can be protected by the wax film, the insulating film is prevented from cracking, the oxidation and aging of the insulating film are slowed down, the insulating property of the insulating film is ensured, the service life of the insulating film is prolonged, the replacement frequency is further reduced, and further the material cost and the working strength of operators are reduced.
Fig. 2 is a flowchart illustrating detailed steps of a method for coating a bus bar insulating layer, and the method for coating the bus bar insulating layer is described in detail with reference to fig. 2, and includes the following steps:
step one, heating the bus to a preset temperature range.
In this example, the bus bar was heated to 150-200 ℃ using an alcohol torch. The insulating coating is accelerated to dry at a higher temperature, so that the time for drying the insulating coating subsequently is shortened, the time cost is reduced, and the working strength of operators is reduced.
Preferably, before the step one, heating the bus bar, further comprises: and cleaning the surface of the bus.
The cleaning bus can remove dirt and rust on the surface of the bus, so that subsequent spraying work is facilitated, the close fit degree of the insulating coating and the bus is improved, and the insulating property is improved.
In this embodiment, use alcohol and acetone to wash the generating line surface in proper order, guarantee that rust and dirt on generating line surface clear away completely, and alcohol and acetone have volatility, avoid remaining on the generating line surface, use alcohol and acetone to wash the generating line in addition and can reduce the corruption to the generating line, guaranteed performances such as electrically conductive. In other embodiments, other cleaning agents or other cleaning methods may be used to clean the surface of the bus bar, which is not limited herein.
And secondly, spraying insulating paint on the surface of the bus.
Insulating coating is sprayed on the surface of the bus, the thermal shrinkable sleeve is replaced by the insulating coating, and the insulating coating can be completely attached to the bus by using a spraying method, so that the short-circuit accident caused by aging and falling of the insulating coating is avoided, the insulating coating can be coated on each part of the bus, the insulating property of the bus is improved, the safety is improved, the fault frequency of power equipment is reduced, the working strength of maintenance personnel is reduced, the potential safety hazard of the power equipment is reduced, the replacement frequency is reduced, and the material cost and the working strength of operating personnel are reduced.
Further, in the process of spraying the insulating paint on the surface of the bus, the temperature of the bus is kept within a preset temperature range until the insulating paint is sprayed. The process that can guarantee at the spraying, the temperature of generating line is higher, utilizes the high temperature of generating line self to accelerate the insulating coating on dry generating line surface, has further shortened the time of later stage stoving, has reduced the time cost, has also reduced operating personnel's operating time.
In this example, the insulating paint was sprayed on the surface of the bus bar, and the bus bar was heated by an alcohol burner. In other embodiments, other heating methods or heat preservation methods may be used to ensure that the temperature of the bus bar is kept within the preset temperature range, which is not limited herein.
Preferably, the thickness of the insulating film is 4mm-6mm, so that the bus has certain insulating performance, and the wiring inside the power equipment is not influenced by the excessive thickness.
And step three, drying the insulating paint on the surface of the bus to form an insulating film.
And the insulating coating is dried to form an insulating film, so that the insulating film can be stably attached to the bus, and the insulating property of the bus is ensured. In this embodiment, the heating of the bus bar using the alcohol burner is continued until the insulating paint dries out to form an insulating film.
Generally, three-phase lines are arranged in power equipment, and each line is provided with a bus passage, so that colored paints with different colors can not be sprayed on the buses of the three-phase lines respectively after the insulating paint is dried, and the three-phase lines are convenient to distinguish.
And step four, spraying liquid wax outside the insulating coating to form a wax film.
Liquid wax is sprayed on the outer side of the insulating film, a wax film is formed on the outer side of the insulating film, the insulating film can be protected by the wax film, the insulating film is prevented from cracking, the oxidation and aging of the insulating film are slowed down, the insulating property of the insulating film is ensured, the service life of the insulating film is prolonged, the replacement frequency is further reduced, and further the material cost and the working strength of operators are reduced.
Preferably, in the fourth step, spraying liquid wax outside the insulating paint, and before forming the wax film, further comprising: the bus bar was cooled to room temperature. Avoid the difficult dry-out of liquid wax because of the high temperature of generating line, reduced operating time.
In this embodiment, the bus bar is cooled to room temperature by air cooling or natural cooling.
Preferably, in the fourth step, spraying liquid wax outside the insulating paint, and after forming the wax film, further comprising: and (5) polishing the outer surface of the wax film. The appearance of the bus bar can be improved.
Example two
The present embodiment provides a bus bar including a bus bar body and an insulating layer disposed on the bus bar body. The insulating layer is formed by coating the bus insulating layer by the coating method of the bus insulating layer mentioned in the embodiment. The thermal shrinkable sleeve is replaced by the insulating coating sprayed on the insulating layer, the insulating coating can be completely attached to the bus by using a spraying method, short-circuit accidents caused by aging and falling of the insulating coating are avoided, insulating coatings can be coated on all parts of the bus, the insulating property of the bus is improved, the safety is improved, the fault frequency of power equipment is reduced, the working intensity of maintenance personnel is reduced, the potential safety hazard of the power equipment is reduced, the replacement frequency is reduced, and the material cost and the working intensity of operating personnel are reduced. The wax film is arranged on the outer side of the insulating film, so that the insulating film is prevented from cracking, the oxidation and aging of the insulating film are slowed down, the insulating property of the insulating film is ensured, the service life of the insulating film is prolonged, the replacement frequency is further reduced, and the material cost and the working strength of operators are further reduced.
In this embodiment, the bus body is the copper bar, and the electric conductive property of copper bar is good, uses extensively and the material is easily obtained, has reduced material cost again.
Preferably, the bus is also provided with a flame-retardant layer, and the flame-retardant layer is arranged outside the insulating layer, so that the safety can be improved, and the influence of combustion on the bus is avoided.
EXAMPLE III
The embodiment provides a power equipment, include as above-mentioned second bus-bar of embodiment, use above-mentioned bus-bar to improve the insulating properties of bus-bar, and then reduced power equipment's fault frequency, alleviateed maintainer's working strength, reduced power equipment's potential safety hazard, also reduced the change frequency simultaneously, and then reduced material cost and operating personnel's working strength. Specifically, the power equipment is an alternating current feeder screen of a transformer substation, and the bus copper bar provided by the second embodiment is arranged inside the alternating current feeder screen.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A method for coating a bus insulating layer is characterized by comprising the following steps:
heating the bus to a preset temperature range;
spraying insulating paint on the surface of the bus;
drying the insulating paint on the surface of the bus to form an insulating film;
and spraying liquid wax outside the insulating film to form a wax film.
2. The method of coating a bus bar insulating layer according to claim 1, further comprising, before the heating the bus bar: and cleaning the surface of the bus.
3. The method for coating the insulating layer of the bus bar according to claim 1, wherein the temperature of the bus bar is maintained within the preset temperature range until the insulating paint is completely sprayed during the process of spraying the insulating paint onto the surface of the bus bar.
4. The method of coating a bus bar insulating layer according to claim 1, wherein the thickness of the insulating film is 4mm to 6 mm.
5. The method for coating the insulating layer of the bus bar according to claim 1, wherein the step of spraying a liquid wax on the insulating coating to form a wax film further comprises: cooling the bus bar to room temperature.
6. The method for coating the insulating layer of the bus bar according to claim 1, wherein the step of spraying a liquid wax on the insulating paint to form a wax film further comprises: and polishing the outer surface of the wax film.
7. A bus bar comprising a bus bar body and an insulating layer provided on the bus bar body, wherein the insulating layer is coated by the coating method of the bus bar insulating layer according to any one of claims 1 to 6.
8. The bus bar of claim 7 wherein the bus bar body is a copper bar.
9. The bus bar of claim 7, further provided with a flame retardant layer disposed outside the insulating layer.
10. An electrical apparatus, comprising a bus bar according to any one of claims 7-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010626284.0A CN111768922A (en) | 2020-07-01 | 2020-07-01 | Coating method of bus insulating layer, bus and power equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010626284.0A CN111768922A (en) | 2020-07-01 | 2020-07-01 | Coating method of bus insulating layer, bus and power equipment |
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| CN111768922A true CN111768922A (en) | 2020-10-13 |
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| CN202010626284.0A Pending CN111768922A (en) | 2020-07-01 | 2020-07-01 | Coating method of bus insulating layer, bus and power equipment |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113769998A (en) * | 2021-09-06 | 2021-12-10 | 陕西斯瑞新材料股份有限公司 | Copper bar paint spraying process for wind generating set |
| CN113964708A (en) * | 2021-10-28 | 2022-01-21 | 河南恒安电力股份有限公司 | Quick repair process for external insulation of water immersion electric power secondary equipment |
| CN114898930A (en) * | 2022-06-06 | 2022-08-12 | 安顺市乾辰谷材科技有限公司 | Insulation film of FIW completely insulated wire in salt-resistant and corrosion-resistant environment |
| CN116618270A (en) * | 2023-05-09 | 2023-08-22 | 河南豫昌电力科技有限公司 | Insulation treatment method for power equipment |
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| CN1437785A (en) * | 1999-12-28 | 2003-08-20 | 阿尔斯通公司 | Method for producing a high-quality insulation of electric conductors or conductor bundles of rotating electric machines by means of thermal spraying |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113769998A (en) * | 2021-09-06 | 2021-12-10 | 陕西斯瑞新材料股份有限公司 | Copper bar paint spraying process for wind generating set |
| CN113964708A (en) * | 2021-10-28 | 2022-01-21 | 河南恒安电力股份有限公司 | Quick repair process for external insulation of water immersion electric power secondary equipment |
| CN114898930A (en) * | 2022-06-06 | 2022-08-12 | 安顺市乾辰谷材科技有限公司 | Insulation film of FIW completely insulated wire in salt-resistant and corrosion-resistant environment |
| CN116618270A (en) * | 2023-05-09 | 2023-08-22 | 河南豫昌电力科技有限公司 | Insulation treatment method for power equipment |
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Application publication date: 20201013 |