CN201196976Y - Anti-corrosion earth electrode - Google Patents
Anti-corrosion earth electrode Download PDFInfo
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- CN201196976Y CN201196976Y CNU200820067181XU CN200820067181U CN201196976Y CN 201196976 Y CN201196976 Y CN 201196976Y CN U200820067181X U CNU200820067181X U CN U200820067181XU CN 200820067181 U CN200820067181 U CN 200820067181U CN 201196976 Y CN201196976 Y CN 201196976Y
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- earth electrode
- metallic conductor
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Abstract
The utility model relates to an anti-corrosion earthed pole which consists of a metallic conductor (1) and a conductive macromolecular material anti-corrosion layer (2) enwrapping the metallic conductor, wherein the cross section of the conductive macromolecular material anti-corrosion layer is quincuncial. Because the cross section of the conductive macromolecular material anti-corrosion layer of the anti-corrosion earthed pole adopts a quincuncial contour design, the anti-corrosion earthed pole has longer perimeter than a circle under the condition of the same cross section. Therefore, the contour enlarges the contact area between soil and the earthed pole, thereby facilitating the reduction of earth resistance, simultaneously reinforcing the strength of the anti-corrosion layer, and bringing about better mechanical performance for the anti-corrosion layer. In addition, the metallic conductor can be separated from the ambient surroundings and basically have no corrosion, thereby reducing the consumption of the metal in a ground screen and prolonging the service life of the ground screen. Furthermore, no additional cathodic protection is needed for protecting the ground screen. In addition, when the anti-corrosion earthed pole access a plain carbon steel ground screen, the coupling current of the earthed pole to the ground screen is smaller than that of a copper earthed pole by 1 to 2 orders of magnitude.
Description
Technical field
The utility model relates to a kind of earthing device, particularly a kind of earth electrode that self has good Corrosion Protection.
Background technology
In order to work and security needs, at buildings such as systems such as electric power, communication, railway, broadcasting and TV, petrochemical industry and intelligent building, ammunition depots a large amount of earth electrodes need be set, the used material of earth electrode mainly contains copper and steel.Because copper alloy has decay resistance preferably, it is comparatively desirable earthing material, but after being corroded, copper can accumulate in water resources soil, copper belongs to little malicious heavy metal, content to copper in the water resources soil all has strict control both at home and abroad, and China lacks the copper resource, a large amount of copper earth electrodes is imbedded underground meeting cause the wasting of resources; Also have, the electrolytic potential of copper is higher, can produce chemical corrosion near steel structure.Therefore, be not widely used at China's copper earth electrode.The iron and steel earth electrode is used in China in a large number because cheap, but because iron and steel self resistance to corrosion in soil is not strong, and consumption is big, useful life is short, occurs ground connection easily and causes the accident because of corrosion fracture.Now, in order to prolong the useful life of large-scale earth mats such as transformer station, have no alternative but drop into a large amount of funds and carry out cathodic protection.
In order to solve the technological deficiency that at present above-mentioned two kinds of earth electrodes exist, earth electrode self must have corrosion resistance preferably, and can satisfy the basic demand of direct current, power frequency earthing and lightning protection ground connection, can carry bigger fault current and lightning current, and these electric currents are imported the earth.
Chinese patent literature " nano-carbon anticorrosion conductive coating that electric power system ground network is used " (patent No. is 03125237.0); propose earth mat to be carried out high pressure painting with nano-sized carbon and epoxy-based lacquers phenol resin; form anticorrosive coat; protection metal earth electrode, but its bearing capacity at fault current and lightning current is not described.Chinese patent literature " anti-corrosion grounding device " (patent No. is 03214327.3), propose to execute earth electrode around bentonite is set, utilize moistening bentonite protective earthing body.
Summary of the invention
Technical problem to be solved in the utility model is: the deficiency that in use exists for the earth electrode that solves materials such as copper, iron and steel, a kind of novel anticorrosion earth electrode is provided, this earth electrode not only has good electrical conductivity and antiseptic property, and can acid and alkali resistance, salt and electrochemical corrosion.
The technical scheme that its technical problem that solves the utility model adopts is: be made up of metallic conductor and the conducting polymer composite anticorrosive coat that is coated on this metallic conductor outside, wherein, the cross sectional shape of conducting polymer composite anticorrosive coat is " quincunx ", has 3～36 smooth, circular-arc ribs.
The anticorrosion earth electrode that the utility model provides compared with prior art has following major advantage:
1. the configuration design of " quincunx ", under the situation in identical cross section, it has bigger girth than circle, and therefore, this profile has increased the contact area of soil and earth electrode, helps reducing earth resistance; Simultaneously, increase the intensity of anticorrosive coat, made anticorrosive coat have the better mechanical performance that gets.
2. because the conducting polymer composite anticorrosive coat has good acid-proof alkaline, not perishable, therefore utilize this conducting polymer composite anticorrosive coat that metallic conductor is coated, can metallic conductor is isolated with environment on every side, metallic conductor is not corroded substantially, thereby reduced the use amount and the useful life that prolongs earth mat of metal in the earth mat.Do not need to add cathodic protection protection earth mat yet.
3. because the conducting polymer composite anticorrosive coat can bear 0.1～100kA/cm
2Lightning surge (8/20 μ s waveform) electric current or 0.1～50A/cm
2Therefore (0.6s) power frequency fault current can satisfy the demand of various function ground connection in short-term.
4. when this earth electrode inserts the ordinary carbon steel earth mat, to minimum 1～2 order of magnitude of galvanic couple current ratio copper ground connection of earth mat.This earth electrode is little to the influence of cloudy insurance system when being used for petroleum and petrochemical industry steel pipe and field, station.Can be used for the shielding earth of pipeline protection device, shielding action is arranged for overvoltage, and to its collected current.
Description of drawings
Fig. 1 is the outside cross section enlarged diagram that coats the anticorrosion earth electrode of conducting polymer composite anticorrosive coat of metallic cable.
Fig. 2 is the outside structure chart that coats the anticorrosion earth electrode of conducting polymer composite anticorrosive coat of metallic cable.
Fig. 3 is the outside cross section enlarged diagram that coats the anticorrosion earth electrode of conducting polymer composite anticorrosive coat of tubular metal conductor.
Among the figure: 1. metallic conductor; 2. conducting polymer composite anticorrosive coat.
Embodiment
The anticorrosion earth electrode that the utility model provides, its structure such as Fig. 1, Fig. 2 and shown in Figure 3: form by metallic conductor 1 and conducting polymer composite anticorrosive coat 2, wherein, conducting polymer composite anticorrosive coat 2 is coated on the outside of metallic conductor 1, and the cross sectional shape of this conducting polymer composite anticorrosive coat is petal shape.
Above-mentioned metallic conductor 1 can adopt the metallic cable (see figure 1), for example a kind of in copper stranded conductor, aluminium stranded conductor, the steel strand wire; Also can adopt the tubular metal conductor, for example a kind of (see figure 3) in steel pipe, copper pipe, the aluminum pipe; Also can adopt the strip metal conductor, for example a kind of among band steel, copper bar, the aluminium row.
Above-mentioned conducting polymer composite anticorrosive coat, its profile be as shown in Figure 2: have 3～36 smooth, circular-arc ribs, its cross sectional shape is " quincunx ".Conducting polymer composite can be a kind of in conductive rubber, conductive plastics, electroconductive resin, conductive paint, the conduction rubber and plastic, or above-mentioned both combined anti-corrosion layers of being combined to form arbitrarily.
Above-mentioned conducting polymer composite anticorrosive coat, its making are to be major ingredient with macromolecular materials such as rubber, plastics, resin, rubber and plastic, lacquers, and conductive powder is an auxiliary material, according to certain ratio both is mixed, and ratio depends on the needs.Generally speaking, in 100 parts of macromolecular materials, add 30～80 parts of conductive powders as required, make conductive rubber, conductive plastics, electroconductive resin, conduction rubber and plastic, conductive paint.The specific insulation of conducting polymer composite anticorrosive coat is less than 100 Ω cm.Conducting polymer composite adds this property agent as required at the process need of preparation, makes the conducting polymer composite anticorrosive coat can bear at least 0.1～50kA/cm
2Lightning surge (8/20 μ s waveform) electric current or 0.1～500A/cm
2(0.6s) power frequency fault current in short-term.
Described conductive powder can be a kind of in the conductive materials of graphite, charcoal, nickel, copper, silver and nickel plating on other matrix, copper facing, silver-plated formation, or several mixing.
Described conducting polymer composite anticorrosive coat, its thickness is generally 0.1～20mm.
The utility model is described in further detail below in conjunction with embodiment, but do not limit the utility model.
Embodiment 1: it is 35mm that metallic conductor 1 adopts nominal area of section
2Copper hinge line, the outside of copper hinge line adopts the mode of extruding sulfuration to coat one deck conductive silicon rubber, have 6 circular-arc stupefied, minimum thickness d=1mm, the specific insulation 2 Ω cm of conductive silicon rubber.
The anticorrosion earth electrode of this example can bear 50kA/m lightning surge (8/20 μ s waveform) electric current at least, or 1kA/m (0.6s) power frequency fault current in short-term.
Embodiment 2: it is 35mm that metallic conductor 1 adopts nominal area of section
2Copper hinge line, the outside of copper hinge line adopts the mode of extruding to coat one deck conductive plastics, have 12 circular-arc stupefied, minimum thickness d=1mm, the specific insulation 0.5 Ω cm of conductive silicon plastics.
The anticorrosion earth electrode of this example can bear 50kA/m lightning surge (8/20 μ s waveform) electric current at least, or 1kA/m (0.6s) power frequency fault current in short-term.
Embodiment 3: metallic conductor 1 adopts the steel pipe of diameter 48mm, the outside mold pressing one deck of steel pipe conductive silicon rubber, minimum thickness d=2mm.The specific insulation 4 Ω cm of conductive silicon rubber, thickness 3mm.
The anticorrosion earth electrode of this example can bear 150kA/m lightning surge (8/20 μ s waveform) electric current at least, or 5k A/m (0.6s) power frequency fault current in short-term.
The anticorrosion earth electrode that the utility model provides, it is when using, and monomer length can be 0.3m～4000m, or decides as required.The form of monomer can be a gust body, can level or vertical the setting.And can form ground network by different monomers as required.
The anticorrosion earth electrode that the utility model provides, its method that is connected with cable is: can by two ends remove conducting polymer composite anticorrosive coat 2 after, with special joint metallic conductor 1 is connected with cable, carry out preservative treatment with corresponding material then.
The anticorrosion earth electrode that the utility model provides, because of himself having very good Corrosion Protection, and can satisfy the requirement of functional groundings such as direct current, power frequency earthing and lightning protection ground connection, therefore can carry bigger fault current and lightning current, and these electric currents are imported the earth.
Claims (7)
1. anticorrosion earth electrode is characterized in that being made up of metallic conductor (1) and the conducting polymer composite anticorrosive coat (2) that is coated on this metallic conductor outside, and wherein, the cross sectional shape of conducting polymer composite anticorrosive coat (2) is " quincunx ".
2. anticorrosion earth electrode according to claim 1 is characterized in that described metallic conductor (1) adopts a kind of in copper stranded conductor, aluminium stranded conductor, the steel strand wire.
3. anticorrosion earth electrode according to claim 1 is characterized in that described metallic conductor (1) adopts a kind of in steel pipe, copper pipe, the aluminum pipe.
4. anticorrosion earth electrode according to claim 1 is characterized in that described metallic conductor (1) adopts a kind of among band steel, copper bar, the aluminium row.
5. anticorrosion earth electrode according to claim 1 is characterized in that cross sectional shape is the conducting polymer composite anticorrosive coat (2) of " quincunx ", and it has 3～36 smooth, circular-arc ribs.
6. anticorrosion according to claim 1 or 5 earth electrode, it is characterized in that described conducting polymer composite anticorrosive coat (2) adopts a kind of in conductive rubber, conductive plastics, electroconductive resin, conductive paint, the conduction rubber and plastic, or above-mentioned both combined anti-corrosion layers of being combined to form arbitrarily.
7. anticorrosion earth electrode according to claim 6, the thickness that it is characterized in that described conducting polymer composite anticorrosive coat (2) is 0.1～20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820067181XU CN201196976Y (en) | 2008-05-15 | 2008-05-15 | Anti-corrosion earth electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820067181XU CN201196976Y (en) | 2008-05-15 | 2008-05-15 | Anti-corrosion earth electrode |
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| Publication Number | Publication Date |
|---|---|
| CN201196976Y true CN201196976Y (en) | 2009-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU200820067181XU Expired - Lifetime CN201196976Y (en) | 2008-05-15 | 2008-05-15 | Anti-corrosion earth electrode |
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| CN (1) | CN201196976Y (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102394389A (en) * | 2011-06-17 | 2012-03-28 | 国网电力科学研究院武汉南瑞有限责任公司 | High ferrochrome silicon electrode for direct-current grounding electrode |
| CN102544779A (en) * | 2011-08-16 | 2012-07-04 | 湖北威达电气有限公司 | Novel anti-corrosion grounding body with cathode protection function and method for manufacturing novel anti-corrosion grounding body |
| CN102983419A (en) * | 2011-09-07 | 2013-03-20 | 崔骥 | Grounding device and grounding method |
| CN103956591A (en) * | 2014-03-25 | 2014-07-30 | 苏州雷仕达电子科技有限公司 | Star-shaped ground body of nanometer conductive anticorrosion coating |
| CN105514629A (en) * | 2016-01-28 | 2016-04-20 | 国家电网公司 | Compound ground electrode |
| CN105742837A (en) * | 2016-04-19 | 2016-07-06 | 北京先研科技有限责任公司 | Efficient discharging grounding electrode |
| CN106207509A (en) * | 2016-08-07 | 2016-12-07 | 河南瑞恒电力电气有限公司 | Substation grounding protection device |
| CN109135496A (en) * | 2018-05-25 | 2019-01-04 | 宁夏中科天际防雷研究院有限公司 | Anticorrosive lightning protection pole of a kind of environment-friendly type and preparation method thereof |
| CN109687174A (en) * | 2017-10-19 | 2019-04-26 | 未来眼世上株式会社 | Compound earth brace and its manufacturing method |
| CN111215709A (en) * | 2020-02-24 | 2020-06-02 | 广东工业大学 | Novel electrode composite electric machining device and machining method |
| CN111641096A (en) * | 2020-04-27 | 2020-09-08 | 国网辽宁省电力有限公司电力科学研究院 | Construction process of conductive polymer material grounding grid |
-
2008
- 2008-05-15 CN CNU200820067181XU patent/CN201196976Y/en not_active Expired - Lifetime
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102394389B (en) * | 2011-06-17 | 2013-09-11 | 国网电力科学研究院武汉南瑞有限责任公司 | High ferrochrome silicon electrode for direct-current grounding electrode |
| CN102394389A (en) * | 2011-06-17 | 2012-03-28 | 国网电力科学研究院武汉南瑞有限责任公司 | High ferrochrome silicon electrode for direct-current grounding electrode |
| CN102544779A (en) * | 2011-08-16 | 2012-07-04 | 湖北威达电气有限公司 | Novel anti-corrosion grounding body with cathode protection function and method for manufacturing novel anti-corrosion grounding body |
| CN102983419A (en) * | 2011-09-07 | 2013-03-20 | 崔骥 | Grounding device and grounding method |
| CN103956591A (en) * | 2014-03-25 | 2014-07-30 | 苏州雷仕达电子科技有限公司 | Star-shaped ground body of nanometer conductive anticorrosion coating |
| CN105514629B (en) * | 2016-01-28 | 2017-10-13 | 国家电网公司 | A kind of compound earthing pole |
| CN105514629A (en) * | 2016-01-28 | 2016-04-20 | 国家电网公司 | Compound ground electrode |
| CN105742837A (en) * | 2016-04-19 | 2016-07-06 | 北京先研科技有限责任公司 | Efficient discharging grounding electrode |
| CN105742837B (en) * | 2016-04-19 | 2018-07-20 | 北京先研科技有限责任公司 | Efficient discharge earthing pole |
| CN106207509A (en) * | 2016-08-07 | 2016-12-07 | 河南瑞恒电力电气有限公司 | Substation grounding protection device |
| CN109687174A (en) * | 2017-10-19 | 2019-04-26 | 未来眼世上株式会社 | Compound earth brace and its manufacturing method |
| CN109135496A (en) * | 2018-05-25 | 2019-01-04 | 宁夏中科天际防雷研究院有限公司 | Anticorrosive lightning protection pole of a kind of environment-friendly type and preparation method thereof |
| CN111215709A (en) * | 2020-02-24 | 2020-06-02 | 广东工业大学 | Novel electrode composite electric machining device and machining method |
| CN111641096A (en) * | 2020-04-27 | 2020-09-08 | 国网辽宁省电力有限公司电力科学研究院 | Construction process of conductive polymer material grounding grid |
| CN111641096B (en) * | 2020-04-27 | 2021-11-09 | 国网辽宁省电力有限公司电力科学研究院 | Construction process of conductive polymer material grounding grid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Beijing Ailao Hi Tech Co. Ltd. Assignor: Wuhan Arrow Advanced Technology Co.,Ltd. Contract record no.: 2011990000629 Denomination of utility model: Heatproof antiseptic earth electrode Granted publication date: 20090218 License type: Exclusive License Record date: 20110714 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20090218 |
|
| CX01 | Expiry of patent term |