CN109300631A - An anti-corrosion and tensile insulator for ±800kV UHV DC line - Google Patents
An anti-corrosion and tensile insulator for ±800kV UHV DC line Download PDFInfo
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- CN109300631A CN109300631A CN201811150400.5A CN201811150400A CN109300631A CN 109300631 A CN109300631 A CN 109300631A CN 201811150400 A CN201811150400 A CN 201811150400A CN 109300631 A CN109300631 A CN 109300631A
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- steel
- feet
- cap
- insulator
- split pin
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/02—Suspension insulators; Strain insulators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/38—Fittings, e.g. caps; Fastenings therefor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/50—Insulators or insulating bodies characterised by their form with surfaces specially treated for preserving insulating properties, e.g. for protection against moisture, dirt, or the like
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/52—Insulators or insulating bodies characterised by their form having cleaning devices
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Abstract
The invention discloses the anticorrosive strain insulators of one kind ± 800kV UHVDC Transmission Lines, and the insulator includes: steel cap, steel feet, cement, insulating part, split pin；Split pin passes through steel cap and insulating part is connect with steel feet; steel cap is mounted on above insulating part by steel feet; cement is between steel cap and insulating part; steel cap, steel feet, split pin material use stainless steel; hydrophobic coat processing has been carried out to fitting surface, existing protection zinc set has been solved and is easy to fall, the poor technical problem of protection effect; the ability for improving the anti-DC current corrosion of insulator hardware, extends the service life of insulator.
Description
Technical field
The present invention relates to the anti-galvano-cautery research fields of insulator, and in particular, to one kind ± 800kV UHVDC Transmission Lines
Anticorrosive strain insulator.
Background technique
Direct current has apparent advantage in terms of large capacity, long distance power transmission, therefore China's direct current transportation in recent years obtains
It grows rapidly.Finding that the phenomenon that DC Insulator fitting is by galvano-cautery, research find that DC current is exhausted China more
Edge interest has the main reason for galvano-cautery.The corrosion of DC Insulator fitting is an issues that need special attention in recent years, and should
Problem has certain time delay, is primarily due to existing line and considers etching problem, currently, the steel of Direct-current porcelain insulator
Foot is respectively arranged with protection zinc set, and protection zinc set has delayed the corrosion of fitting to a certain degree, but does not solve etching problem fundamentally, when
Zinc set erodes backwardness, and fitting etching problem still protrudes, and insulator Years Of Service and service life are indefinite, is later power transmission line
Road operational safety has buried security risk.
Summary of the invention
The present invention provides the anticorrosive strain insulators of one kind ± 800kV UHVDC Transmission Lines, solve existing guarantor
Shield zinc set is easy to fall, the poor technical problem of protection effect, improves the ability of the anti-DC current corrosion of insulator hardware, prolongs
The service life of insulator is grown.
For achieving the above object, the present inventor has carried out a large amount of experiment for the influence factor of direct current corrosion and has ground
Study carefully.The experiment of DC current Comparison on Corrosion has been carried out using iron electrode and stainless steel electrode, each group actually use 5 it is identical
5 experimental electrodes are placed in parallel in insulating resin plate by cuboid electrode as experimental electrode, the positive phase with experimental power supply
Even.Separately a root long cube electrode is placed in insulating resin plate, is connected with the cathode of power supply as auxiliary electrode, experimental electrode
Perpendicular to auxiliary electrode, the spacing of end to the auxiliary electrode of first experimental electrode is 5mm, and second spacing is 10mm, the
Three spacing are 15mm, and the 4th spacing is 20mm, and the 5th spacing is 25mm.By test product as in experimental box, experimental box is passed through
NaCl salt spray after ultrasonic atomization applies the DC voltage of 450V on experimental electrode and auxiliary electrode, measures total current
It is 300 microamperes, after 60 hours corrosion experiments, finds the corrosion rate of stainless steel much smaller than ordinary steel.It is stainless under the same terms
/ 10th of loss quality less than ordinary steel of steel, therefore, stainless steel have very strong anti-DC current corrosive power.
Under the same terms, when not being passed through salt fog, experimental electrode will not corrode, therefore metal material surface is carried out
After hydrophobicity processing, DC current can be effectively prevented to corrosion of metal.
The ability that stainless steel uses its electrochemically resistant to corrode at present, present applicant have found that it is anti-outer plus straight
The ability under the function of current with anti-electrolytic etching is flowed, therefore, present invention take advantage of that its ability realizes the present invention.
Existing stainless steel is divided into austenitic stainless steel, martensitic stain less steel and ferritic stainless steel, and three has anti-electricity
Chemical corrosion resistance.There is no hydrophobic coat on general insulator hardware.Common surface hydrophobicity coating has the painting of hydrophobicity fluorine carbon
Material and hydrophobicity Silicone Rubber Based Coatings.The study found that being greater than 30 degree at insulator inclination angle when Hydrophobic Coatings contact angle is greater than 110 °
In the case where, the water droplet of diameter 2mm or more can slide under the effect of gravity, avoid adsorption moisture content；Coating exists in order to prevent
Cracking falls off under natural environment, with reference to " epoxy resin floor coatings material standard specification JCT1015-2006 " and steel construction paint film
The thickness of the requirement of thickness, Hydrophobic Coatings is not less than 0.1mm.
It is described exhausted this application provides a kind of Insulators on HVDC Transmission Line of anti-galvano-cautery according to the studies above achievement
Edge includes:
Steel cap, steel feet, cement, insulating part, split pin；Split pin passes through steel cap and insulating part is connect with steel feet, and steel cap is logical
It crosses steel feet to be mounted on above insulating part, cement is between steel cap, steel feet and insulating part, wherein the steel cap, steel feet and opening
Pin is austenitic stainless steel；Or the steel cap, steel feet and split pin are martensitic stain less steel；Or the steel cap, steel feet and opening
Pin is ferritic stainless steel；Or the steel cap, steel feet and split pin are hot-galvanized steel.
Further, when the steel cap, steel feet and split pin are hot-galvanized steel, steel cap and steel feet surface are coated with coating,
The coating is hydrophobicity fluorocarbon coating.
Further, steel cap and steel feet surface are coated with coating, and the coating is hydrophobicity Silicone Rubber Based Coatings.
Further, the Hydrophobic Coatings contact angle is greater than 110 °.
Further, the thickness of the Hydrophobic Coatings is not less than 0.1mm.
Further, the insulator further includes that condensation aqueous vapor removes structure, and the condensation aqueous vapor removes structure and includes:
Timer switch, controller, motor-driven carrier, upright guide rail, the first detection plate, the second detection plate, first pressure pass
Sensor, second pressure sensor, annulus, first support, second support, third bracket, the 4th bracket, insulating bar, multiple springs
Piece, multiple cleaning rods；
The cross-arm of insulating bar one end and transmission line of electricity connection, from top to bottom first support, second support, third bracket one
End is connect with insulating bar, and the other end of first support is connect with the first detection plate, and the lower surface of the first detection plate is equipped with the
One pressure sensor；The other end of second support is connect with the upright guide rail back side, and motor-driven carrier is mounted on upright guide rail, electronic
Trolley is connect with controller, and controller is connect with timer switch, first pressure sensor, second pressure sensor with control
Device connection, the third bracket other end are connect with the second detection plate, and the upper surface of the second detection plate is equipped with second pressure sensor；
First detection plate and the second detection plate are located at the top of steel cap and the lower section of steel feet, and the 4th bracket one end and motor-driven carrier connect
It connects, the 4th bracket other end is connect with annulus, and the diameter of annulus is greater than the width of insulating part, the center line of insulating part and annulus
Center line is overlapped；Circle ring inner surface is evenly distributed with multiple spring leafs, and one end of spring leaf is connected with cleaning rod.
Wherein, by the study found that insulator surface by the basic reason of galvano-cautery be due to insulator surface condense
Therefore, in the preferred embodiment of the application aqueous vapor is equipped with condensation aqueous vapor and removes structure, on the insulator so that fundamentally solution is broken off relations
The problem of edge sublist face is by galvano-cautery, specifically: the clean time is arranged by timer switch, it is clear to be such as spaced 3 hours
Except successively aqueous vapor, when timer switch is opened, controller receives the instruction of timer switch transmission, is then turned on electronic small
Vehicle starts to move, and motor-driven carrier moves in orbit, and then drives annulus mobile by the 4th bracket, and annulus moves from top to bottom
During using circle ring inner wall distribution multiple cleaning rods to insulator surface condensation aqueous vapor be purged, due to insulate sublist
Face is uneven therefore the application is provided with spring leaf and is connect with cleaning rod to adapt to the shape of insulator surface and clean, and protects
Hinder clean effect, after annulus completes insulator surface cleaning, the second pressure of the upper surface of annulus and the second detection plate is passed
The pressure information of generation is passed to controller by sensor contact, second pressure sensor contacts, and controller control motor-driven carrier returns
It returns, insulator is once cleaned from newly, then annulus is contacted with the first pressure sensor of the upper surface of the first detection plate,
The pressure information of generation is passed to controller by first pressure sensor contact, and controller controls motor-driven carrier and stops movement, intelligence
The insulator surface condensation aqueous vapor that completes of energy is removed, and without artificial participation, fundamentally solves insulator surface by electric rotten
Erosion problem.
Technical solution in the application is derived from the research of the corrosion mechanism to insulator hardware under DC current: insulator
Fitting sweating water gas is the necessary condition for causing DC current to corrode；Corrosion achievement of the DC current to different materials, height
Under DC current effect serious electrolytic etching can occur for carbon steel, mild steel, copper, cast iron；Austenite, martensite and iron element
Under 300 μ A, DC current effect in 60 hours, microcorrosion only occurs for body stainless steel under salt mist environment.Ordinary steel is on surface
After covering high hydrophobic coating, DC current corrosion is resistant under salt mist environment.According to the studies above achievement, The present invention gives
Anticorrosive strain insulator technical solution as described above.
The direct current that the anti-DC current caustic solution of insulator provided by the invention can also be applied to other voltage class is defeated
Electric line insulator.
One or more technical solution provided by the present application, has at least the following technical effects or advantages:
It solves existing protection zinc set to be easy to fall, the poor technical problem of protection effect improves insulator hardware
The ability of anti-DC current corrosion, extends the service life of insulator.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention；
Fig. 1 is the structural schematic diagram of the Insulators on HVDC Transmission Line of anti-galvano-cautery in the application；
Fig. 2 is the structural schematic diagram for condensing aqueous vapor in the application and removing structure.
Specific embodiment
The present invention provides a kind of Insulators on HVDC Transmission Line of anti-galvano-cautery, solve existing protection zinc set and are easy
It falls, the poor technical problem of protection effect, improves the ability of the anti-DC current corrosion of insulator hardware, extend insulator
Service life.
To better understand the objects, features and advantages of the present invention, with reference to the accompanying drawing and specific real
Applying mode, the present invention is further described in detail.It should be noted that in the case where not conflicting mutually, the application's
Feature in embodiment and embodiment can be combined with each other.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used also
Implemented with being different from the other modes being described herein in range using other, therefore, protection scope of the present invention is not by under
The limitation of specific embodiment disclosed in face.
Referring to FIG. 1, this application provides a kind of Insulators on HVDC Transmission Line of anti-galvano-cautery, the insulation attached bag
It includes:
Steel cap 1, steel feet 2, cement 3, insulating part 4, split pin 5；Split pin 5 passes through steel cap 1 and insulating part 4 and steel feet 2 connects
It connects, steel cap 1 is mounted on 4 top of insulating part by steel feet 2, and cement 3 is located between steel cap 1, steel feet 2 and insulating part 4.
Further, the steel cap, steel feet and split pin are austenitic stainless steel.Or the steel cap, steel feet and split pin
For martensitic stain less steel.Or the steel cap, steel feet and split pin are ferritic stainless steel.Or the steel cap, steel feet and split pin
For hot-galvanized steel, steel cap and steel feet surface are coated with coating, and the coating is hydrophobicity fluorocarbon coating.Or steel cap and steel feet surface
Coated with coating, the coating is hydrophobicity Silicone Rubber Based Coatings.
Further, the Hydrophobic Coatings contact angle is greater than 110 °.The thickness of the Hydrophobic Coatings is not less than
0.1mm。
Further, referring to FIG. 2, the insulator further includes that condensation aqueous vapor removes structure, the condensation aqueous vapor is removed
Structure includes:
Timer switch, controller, motor-driven carrier 15, upright guide rail 16, the first detection plate 10, the second detection plate 11,
One pressure sensor 12, second pressure sensor 13, annulus 14, first support 7, second support 8, third bracket 9, the 4th bracket
17, insulating bar 6, multiple spring leafs 18, multiple cleaning rods 19；
The cross-arm of insulating bar one end and transmission line of electricity connects, from top to bottom first support 7, second support 8, third bracket 9
One end connect with insulating bar, the other end of first support is connect with the first detection plate, the installation of the lower surface of the first detection plate
There is first pressure sensor；The other end of second support is connect with the upright guide rail back side, and motor-driven carrier is mounted on upright guide rail,
Motor-driven carrier is connect with controller, and controller is connect with timer switch, first pressure sensor, second pressure sensor with
Controller connection, the third bracket other end are connect with the second detection plate, and the upper surface of the second detection plate is equipped with second pressure biography
Sensor；First detection plate and the second detection plate are located at the top of steel cap and the lower section of steel feet, the 4th bracket one end with it is electronic
Trolley connection, the 4th bracket other end connect with annulus, the diameter of annulus greater than insulating part width, the center line of insulating part and
The center line of annulus is overlapped；Circle ring inner surface is evenly distributed with multiple spring leafs, and one end of spring leaf is connected with cleaning rod.
Wherein, by the study found that insulator surface by the basic reason of galvano-cautery be due to insulator surface condense
Therefore, in the preferred embodiment of the application aqueous vapor is equipped with condensation aqueous vapor and removes structure, on the insulator so that fundamentally solution is broken off relations
The problem of edge sublist face is by galvano-cautery, specifically: the clean time is arranged by timer switch, it is clear to be such as spaced 3 hours
Except successively aqueous vapor, when timer switch is opened, controller receives the instruction of timer switch transmission, is then turned on electronic small
Vehicle starts to move, and motor-driven carrier moves in orbit, and then drives annulus mobile by the 4th bracket, and annulus moves from top to bottom
During using circle ring inner wall distribution multiple cleaning rods to insulator surface condensation aqueous vapor be purged, due to insulate sublist
Face is uneven therefore the application is provided with spring leaf and is connect with cleaning rod to adapt to the shape of insulator surface and clean, and protects
Hinder clean effect, after annulus completes insulator surface cleaning, the second pressure of the upper surface of annulus and the second detection plate is passed
The pressure information of generation is passed to controller by sensor contact, second pressure sensor contacts, and controller control motor-driven carrier returns
It returns, insulator is once cleaned from newly, then annulus is contacted with the first pressure sensor of the upper surface of the first detection plate,
The pressure information of generation is passed to controller by first pressure sensor contact, and controller controls motor-driven carrier and stops movement, intelligence
The insulator surface condensation aqueous vapor that completes of energy is removed, and without artificial participation, fundamentally solves insulator surface by electric rotten
Erosion problem.
Technical solution in the application is derived from the research of the corrosion mechanism to insulator hardware under DC current: insulator
Fitting sweating water gas is the necessary condition for causing DC current to corrode；Corrosion achievement of the DC current to different materials, height
Under DC current effect serious electrolytic etching can occur for carbon steel, mild steel, copper, cast iron；Austenite, martensite and iron element
Under 300 μ A, DC current effect in 60 hours microcorrosion only occurs for body stainless steel under salt mist environment.Ordinary steel is on surface
After covering high hydrophobic coating, DC current corrosion is resistant under salt mist environment.According to the studies above achievement, The present invention gives
Anticorrosive strain insulator technical solution as described above.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (5)
1. the anticorrosive strain insulator of one kind ± 800kV UHVDC Transmission Lines, which is characterized in that the insulator includes:
Steel cap (1), steel feet (2), cement (3), insulating part (4), split pin (5)；Split pin (5) passes through steel cap (1) and insulating part
(4) it is connect with steel feet (2), steel cap (1) is mounted on above insulating part (4) by steel feet (2), and cement (3) is located at steel cap (1), steel
Between foot (2) and insulating part (4), wherein the steel cap (1), steel feet (2) and split pin (5) are austenitic stainless steel；Or it is described
Steel cap (1), steel feet (2) and split pin (5) are martensitic stain less steel；Or the steel cap (1), steel feet (2) and split pin (5) are iron
Ferritic stainless steel.
2. the anticorrosive strain insulator of ± 800kV UHVDC Transmission Lines according to claim 1, which is characterized in that when
When the steel cap (1), steel feet (2) and split pin (5) are hot-galvanized steel, steel cap (1) and steel feet (2) surface are coated with coating, institute
Stating coating is hydrophobicity fluorocarbon coating.
3. the anticorrosive strain insulator of ± 800kV UHVDC Transmission Lines according to claim 1, which is characterized in that when
The steel cap (1), steel feet (2) and split pin (5) are austenitic stainless steel；Or the steel cap (1), steel feet (2) and split pin (5)
For martensitic stain less steel；Or the steel cap (1), steel feet (2) and split pin (5) be when being ferritic stainless steel, steel cap (1) and steel feet
(2) surface is coated with coating, and the coating is hydrophobicity Silicone Rubber Based Coatings.
4. the anticorrosive strain insulator of ± 800kV UHVDC Transmission Lines according to claim 2 or 3, which is characterized in that
The Hydrophobic Coatings contact angle is greater than 110 °.
5. the anticorrosive strain insulator of ± 800kV UHVDC Transmission Lines according to claim 2 or 3, which is characterized in that
The thickness of the Hydrophobic Coatings is not less than 0.1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811150400.5A CN109300631A (en) | 2018-09-29 | 2018-09-29 | An anti-corrosion and tensile insulator for ±800kV UHV DC line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811150400.5A CN109300631A (en) | 2018-09-29 | 2018-09-29 | An anti-corrosion and tensile insulator for ±800kV UHV DC line |
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| Publication Number | Publication Date |
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| CN109300631A true CN109300631A (en) | 2019-02-01 |
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| CN201811150400.5A Pending CN109300631A (en) | 2018-09-29 | 2018-09-29 | An anti-corrosion and tensile insulator for ±800kV UHV DC line |
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| CN206819816U (en) * | 2017-03-22 | 2017-12-29 | 宁夏凯速德科技有限公司 | A kind of special rod type suspension composite structure of high ferro circuit |
| CN207781295U (en) * | 2018-01-19 | 2018-08-28 | 江西正强电瓷电器有限公司 | A kind of ceramic insulator for high voltage |
| CN207781273U (en) * | 2018-01-23 | 2018-08-28 | 江西泉新电气有限公司 | AC type glass insulator |
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