CN104701644B - Graphite is combined ground protection material and preparation method thereof - Google Patents
Graphite is combined ground protection material and preparation method thereof Download PDFInfo
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- CN104701644B CN104701644B CN201510096748.0A CN201510096748A CN104701644B CN 104701644 B CN104701644 B CN 104701644B CN 201510096748 A CN201510096748 A CN 201510096748A CN 104701644 B CN104701644 B CN 104701644B
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- graphite
- ground protection
- protection material
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- cement
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Ground protection material and preparation method thereof is combined the invention discloses a kind of graphite, graphite, which is combined ground protection material, includes the raw material of following volumn concentration：Crystalline flake graphite 40 70%, cement 25 55%, pitch 2 5%, epoxy resin 2 5%.The graphite is combined ground protection materials application and continued in the metal of metallic ground body and nonmetal grounding body on part; effectively metal can be protected not to be corroded while grounded screen resistance reducing effect is not influenceed; so as to substantially increase the stability and working life of earthed system, production run organizational maintenance cost is reduced.
Description
Technical field
The present invention relates to power system Lightning protection field, more particularly to a kind of graphite is combined ground protection material
And preparation method thereof.
Background technology
With the development of power network, every electric power facility construction just increases year by year, is particularly UHV Transmission Engineering in recent years
Development, large-scale trans-regional transmission line of electricity is more and more wider.China's region area is wide and with a varied topography changeable, exists within the border multiple close
Collection type thunderbolt region, it is especially in the majority with southern area.Thunder-strike phenomenon is a kind of more serious natural calamity, transmission line of electricity it is anti-
Thunder protective grounding is directly connected to the security and stability of power system.
At present, the major measure that power transmission line lightning shielding shielding is taken includes enforced insulator dielectric level, reduces built on stilts ground
Line shielding angle, Transmission Line Arrestor is installed, horizontal lightning rod is installed, using lightning protection such as automatic reclosing, the drop resistances of tower grounding net
Measure.Practical operating experiences show that above-mentioned precautionary measures really serve certain effect, but add simultaneously in lightning protection
Substantial amounts of investment and maintenance load." lightning protection is to be grounded ", long-term effect and cost of investment angle from Lightning stroke Protection Measures for Over-Head Lines
Consider, the impulse earthed resistance of reduction tower grounding net is undoubtedly the raising resistance to thunder level of transmission line of electricity and reduces transmission line lightning stroke
Trip accident is most economical, effective method.
Power system grounded screen is typically using metal materials such as band steel, zinc Baogang, copper covered steel, copper.Except price is more held high
Outside expensive copper earthing material decay resistance is preferable, common metal grounded screen is subject to the corrosion of soil, and grounded screen is rotten
The corollary failure factor that erosion problem is difficult to avoid that as metallic ground body, is always Grounding Technology of Modern Power System practitioner rather head
The problem of pain.The corrosion of electric power grounding grid generally comprises chemical attack and electrochemical corrosion, and metallic ground body is in wetland
And the corrosion process in Simulated Soil liquid is essentially electrochemical corrosion.General estimated 20~30 years use at the beginning of grounded screen is embedded
Life-span, but some mild steel grounding bodies partial earthing metal after running 3~5 years has occurred and that serious surface corrosion, 8~10
Year substantially erodes the 1/3 of carbon steel, severe local corrosion, the electric power for the electric current that can not withstand shocks at all so that grounded screen
Even power network is faced with great operation troubles probability and the personal safety risk of staff.Except metallic ground body body is easy
Outside being corroded, other non-metal grounding materials are such as：At the interconnections such as graphite grounding module, soft graphite bonded earth electrode
Metal continues part there is also etching problem, have impact on the grounding resistance-reducing effect of whole grounded screen.
The content of the invention
Based on this, it is an object of the invention to provide a kind of high conductivity anti-corrosion graphite ground protection material.
Specific technical scheme is as follows：
A kind of graphite is combined ground protection material, includes the raw material of following volumn concentration：Crystalline flake graphite 40-70%,
Cement 25-55%, pitch 2-5%, epoxy resin 2-5%.
In one of the embodiments, graphite, which is combined ground protection material, includes the raw material of following volumn concentration：Squama
Piece graphite 50-70%, cement 25-45%, pitch 2-3%, epoxy resin 2-3%.
In one of the embodiments, the purity of the crystalline flake graphite is 95%.
In one of the embodiments, the epoxy resin viscosity is 100~300mpa.s.
It is a further object of the present invention to provide the preparation method that above-mentioned graphite is combined ground protection material.
Above-mentioned graphite is combined the preparation method of ground protection material, comprises the following steps：By crystalline flake graphite and cement mixing
After add water and be stirred until homogeneous, pitch and epoxy resin are then added before cement solidification, is uniformly mixed, produces.
In one of the embodiments, the addition of its reclaimed water is the 35-45% of crystalline flake graphite and cement cumulative volume.
The principle and advantage of the present invention is as follows：
For problem present in current produce reality, the invention provides a kind of compound ground connection of high conductivity anti-corrosion graphite
Protection materials and preparation method thereof.The metal that it is applied into metallic ground body and nonmetal grounding body continues on part, can be not
Effectively protect metal not to be corroded while influence grounded screen resistance reducing effect, thus substantially increase the stability of earthed system with
Working life, reduces production run organizational maintenance cost.
The characteristics of present invention takes full advantage of crystalline flake graphite high conductivity；Cement solidification shaping is fast, anti-corrosion, easy to use
The characteristics of feature and pitch, epoxy resin waterproof, protection against the tide, anti-corrosion.In addition, the addition of epoxy resin causes material to be more easy to solidification
And property is more stablized after solidification, not easily runs off, the drop resistance protecting effect that graphite is combined ground protection material is extended.The present invention
Implement convenient succinct, anti-corrosion, conductive effect are good.
Brief description of the drawings
Fig. 1 is that graphite of the present invention is combined ground protection material preparation flow schematic diagram.
Embodiment
The raw material that the embodiment of the present invention is used is as follows：
The present invention is further elaborated by the following examples.
Embodiment 1
A kind of graphite of the present embodiment is combined the preparation method of ground protection material (preparation flow schematic diagram is as shown in Figure 1)：
Add after the crystalline flake graphite of volume fraction 40% stirs with 50% cement powder and adding water and add in deionized water
Graphite, which is obtained, after 5% pitch and 5% epoxy resin are well mixed is combined ground protection material.
The material is homogeneously applied to graphite bonded earth electrode or the continue outer surface of part of metal forms protective coating, should
Resistivity is about 1.9 Ω m after material solidification.
Embodiment 2
A kind of graphite of the present embodiment is combined the preparation method of ground protection material：Volume fraction is added in deionized water
70% crystalline flake graphite and 25% cement powder and adding water adds 2% pitch and 3% epoxy resin after stirring
Graphite is obtained after well mixed and is combined ground protection material.
The material is homogeneously applied to graphite bonded earth electrode or the continue outer surface of part of metal forms protective coating, should
Resistivity is about 0.1 Ω m after material solidification.
Embodiment 3
A kind of graphite of the present embodiment is combined the preparation method of ground protection material：Volume fraction is added in deionized water
50% crystalline flake graphite and 45% cement powder and adding water adds 3% pitch and 2% epoxy resin after stirring
Graphite is obtained after well mixed and is combined ground protection material.
The material is homogeneously applied to graphite bonded earth electrode or the continue outer surface of part of metal forms protective coating, should
Resistivity is about 0.3 Ω m after material solidification.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and it describes more specific and detailed, but simultaneously
Can not therefore it be construed as limiting the scope of the patent.It should be pointed out that coming for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (5)
1. a kind of graphite is combined ground protection material, it is characterised in that include the raw material of following volumn concentration：Crystalline flake graphite
40-70%, cement 25-55%, pitch 2-5%, epoxy resin 2-5%.
2. graphite according to claim 1 is combined ground protection material, it is characterised in that including following volumn concentration
Raw material：Crystalline flake graphite 50-70%, cement 25-45%, pitch 2-3%, epoxy resin 2-3%.
3. graphite according to claim 1 or 2 is combined ground protection material, it is characterised in that the crystalline flake graphite it is pure
Spend for more than 95%；The epoxy resin viscosity is 100~300mpa.s.
4. the graphite described in claim any one of 1-3 is combined the preparation method of ground protection material, it is characterised in that including such as
Lower step：Crystalline flake graphite is stirred until homogeneous with being added water after cement mixing, pitch and asphalt mixtures modified by epoxy resin are then added before cement solidification
Fat, is uniformly mixed, and produces.
5. preparation method according to claim 4, it is characterised in that the addition of its reclaimed water is that crystalline flake graphite and cement are total
The 35-45% of volume.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510096748.0A CN104701644B (en) | 2015-03-04 | 2015-03-04 | Graphite is combined ground protection material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510096748.0A CN104701644B (en) | 2015-03-04 | 2015-03-04 | Graphite is combined ground protection material and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104701644A CN104701644A (en) | 2015-06-10 |
| CN104701644B true CN104701644B (en) | 2017-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510096748.0A Active CN104701644B (en) | 2015-03-04 | 2015-03-04 | Graphite is combined ground protection material and preparation method thereof |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1035497C (en) * | 1992-06-26 | 1997-07-23 | 陈惠民 | Super-strong moisture absorbing resin type resistance reducing agent for grounding |
| CN1110013A (en) * | 1993-08-27 | 1995-10-11 | 王奎宏 | Anti-thunderstrock grounding device of composite carbon material and making method thereof |
| CN201845890U (en) * | 2010-10-09 | 2011-05-25 | 什邡名仕电子有限公司 | Lightning-proof grounding body |
| CN102082331A (en) * | 2011-02-25 | 2011-06-01 | 大庆奉天电力器材厂 | Carbonized grounding electrode and preparation method thereof |
| KR101064342B1 (en) * | 2011-05-19 | 2011-09-14 | (주)옴니엘피에스 | A graphite carbon grounding module and the method of the same |
| CN102496790A (en) * | 2011-12-26 | 2012-06-13 | 江苏金合益复合新材料有限公司 | Graphite grounding module |
| CN102723620B (en) * | 2012-06-20 | 2015-03-25 | 青岛辉安工程控制有限公司 | Composite anticorrosion grounding device and preparation method thereof |
| CN103065703B (en) * | 2012-11-29 | 2015-09-16 | 郑州市永逸降阻材料有限公司 | Corrosion-free conduction resistance-lowering material and earth device without maintenance thereof |
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| CN104701644A (en) | 2015-06-10 |
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Inventor after: Xiao Wei Inventor after: Zhang Sihan Inventor after: Zhan Qinghua Inventor after: Huang Songbo Inventor after: Huang Daochun Inventor before: Xiao Wei Inventor before: Zhan Qinghua Inventor before: Huang Songbo |
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