CN107946790B - A kind of graphite-based flexibility copper conductor earthing or grounding means and the preparation method and application thereof - Google Patents
A kind of graphite-based flexibility copper conductor earthing or grounding means and the preparation method and application thereof Download PDFInfo
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- CN107946790B CN107946790B CN201711170511.8A CN201711170511A CN107946790B CN 107946790 B CN107946790 B CN 107946790B CN 201711170511 A CN201711170511 A CN 201711170511A CN 107946790 B CN107946790 B CN 107946790B
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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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Abstract
The present invention relates to outdoor ENG land technical fields, in particular to a kind of graphite-based flexibility copper conductor earthing or grounding means and the preparation method and application thereof.Graphite-based flexibility copper conductor grounding device constructions of the present invention are simple, preparation method simple process, and corrosion resistance is good, reduce ground resistance significant effect, discharge capacity is strong, and flexibility is good, light-weight, easily construction, overall life cycle cost is low, energy conservation and environmental protection, solves the disadvantage that current all kinds of earthing materials, it is the substitution earthing material of existing metallic ground material, is the first choice of earthing material.
Description
Technical field
The present invention relates to outdoor ENG land technical fields, are grounded in particular to a kind of graphite-based flexibility copper conductor
Device and the preparation method and application thereof.
Background technique
The existing Traction Substation of Electric Railway grounding-for-lightning device material in China mostly uses metal material (the naked strand of fine copper
Line or band steel etc.).It is distributed when laying at grid configuration.Grounded screen buried depth should under frozen soil layer 0.2m, general frozen soil layer thickness
For 1m.Grounding body should avoid equipment framework basis when laying.Indoor and outdoor cable ditch support should all be using Special grounding wire and ground connection
Net connection, ground line use 50mm*5mm Hot-dip zinc-coated flat steel sheet, and grounded screen copper stranded conductor is introduced in ditch and is connect with band steel.Outdoor frame
Structure, outdoor ground installations bracket do down conductor using 50mm*5mm Hot-dip zinc-coated flat steel sheet, and grounded screen copper stranded conductor is drawn ground
It is connect after 200mm with band steel.Plant bottom case and framework earthing method are constructed by unit in charge of construction by related regulation, all grounded screens
Connection uses sweat soldering, and welding securely should not should have the defects of crack, stomata, desoldering, solder skip.Weld seam is answered full, works as welding
After the completion, also one layer of antirust paint should be applied in commissure.All leakages ground line should all figure red lead and pitch-dark.Its underground is close to earth's surface
Layer should all pitching.Equipment ground downlead uses 50mm*5mm Hot-dip zinc-coated flat steel sheet, and arrester ground downlead should be with equipment frame
Structure insulation will be connect after grounded screen copper stranded conductor extraction ground 200mm with band steel.All disconnecting switch bracket ground lines are away from ground
It is welded at 0.5m, M12mm*30mm bolt is for overhauling hanging earthing conductor.The earthing or grounding means and substation ground net of independent lightning rod
Distance cannot be less than 3m in ground.Before earth work construction, repetition measurement should be carried out to soil resistivity, strict implement is answered in measurement work
The regulation of " railway engineering physical prospecting regulation " (TB10013-2010).Measurement, which finishes, should be supplied to measurement result design list
Position.After grounded screen is buried, its grounding resistance should be surveyed.Independent lightning rod ground resistance is not greater than 10 ohm, main grounding grid
Grounding resistance should not exceed 1 ohm.And the safety requirements of contact potential and step voltage should be met.Using heat between ground line
Fusion welding, all outer bleed-out ground lines should use hot galvanizing antirust treatment.Master control room is horizontally mounted interior away from ground 300mm along wall and connects
Ground bus (50mm*5mm Hot-dip zinc-coated flat steel sheet), is fixed on wall with support clamp, and the distance between clamp is supported to be not more than 1m, is applied
If when must not have height rise and fall bending phenomena such as.Connection between indoor earth bus and outdoor grounded screen uses copper stranded conductor.Room
Interior equipment basic pre-buried part is connect by 50mm*5mm Hot-dip zinc-coated flat steel sheet with indoor earth bus, and tie point is no less than at two.
Although grounding-for-lightning device material in the related technology can play a role, there are problems, main to wrap
It includes:
Perishable: copper stranded conductor or other metal materials are embedded in underground for a long time and easily corrode as earthing material, service life
It is limited, it need to often repair, cause overlapping investment；Key is the increase due to ground resistance in use, Bu Nengke
By aerial drainage, Yi Yinqi equipment and personal safety accident occur.The corrosion of metal in the soil, in addition to soil existing for soil itself
Caused by difference, oxygen concentration difference, salt concentration difference, temperature difference corrode, there are also caused by the pollution of the soda acid of soil, stray electrical current etc. corrosion, with
And corrode caused by the welding (galvanic couple) of metal, bending (stress) etc..
Discharge capacity is poor: copper stranded conductor or other metal materials are made as earthing material in high frequency lightning current or dash current
Under, due to the influence of metal material kelvin effect, effective aerial drainage section has the shortcomings that substantially reduce than its nominal section,
Cannot sufficiently rapid aerial drainage, be the principal element of current lightning protection Frequent Accidents.
Ground resistance constantly increases: since copper or other metal materials are as grounding body, being embedded in various soil environments for a long time
Underground, it is perishable to get rusty, cause ground resistance constantly to increase, and irrecoverable, be struck by lightning at this moment or overvoltage will be made
Forming apparatus and personal safety accident.
Easily be tampered: copper stranded conductor or other metal materials have recovery value, are also easy to recycle as earthing material,
It is difficult to avoid that pilferage damage, cannot such as find in time, huge damage will be caused in overcurrent or thunder and lightning.
In addition, some specific grounding-for-lightning device materials used in the related technology, it may have different disadvantages:
Stainless steel: corrosion resistance is preferable, anti-Cl-Ion etching, but higher cost, cost performance is not high, and use is less；
Copper clad steel: corrosion resistance is preferable, and engineering is poor, higher cost；
Graphite block: being heated frangible, and impact resistance is poor, and service life is shorter；
Friction reducer: causing grounding body to corrode, and limits the application of friction reducer.
In view of this, the present invention is specifically proposed.
Summary of the invention
The first object of the present invention is to provide a kind of graphite-based flexibility copper conductor earthing or grounding means, the graphite-based flexibility
Copper conductor grounding device constructions are simple, and corrosion resistance is good, and ground resistance is low, and discharge capacity is strong, and flexibility is good, light-weight, easily
Construction, overall life cycle cost is low, energy conservation and environmental protection.
The second object of the present invention is to provide the preparation method of graphite-based flexibility copper conductor earthing or grounding means described in one kind,
This method simple process and low cost.
The third object of the present invention is to provide the application of graphite-based flexibility copper conductor earthing or grounding means described in one kind, described
Graphite-based flexibility copper conductor earthing or grounding means can be preferred for substituting as the substitution grounded parts of existing metallic ground material
Existing Traction Substation of Electric Railway copper stranded conductor grounded parts.The graphite-based flexibility copper conductor earthing or grounding means corrosion resistance
Can be good, ground resistance is low, and discharge capacity is strong, and flexibility is good, and it is light-weight, it easily constructs, overall life cycle cost is low, energy conservation and environmental protection.
In order to realize above-mentioned purpose of the invention, the following technical scheme is adopted:
A kind of graphite-based flexibility copper conductor earthing or grounding means, the graphite-based flexibility copper conductor earthing or grounding means include:
At least one graphite-copper recombination line；
Cladding setting graphite protective layer on the outside of at least one graphite-copper recombination line.
Graphite-based flexibility copper conductor grounding device constructions of the present invention are simple, and corrosion resistance is good, and ground resistance is low, aerial drainage energy
Power is strong, and flexibility is good, light-weight, easily constructs, overall life cycle cost is low, energy conservation and environmental protection.
It optionally, include at least one copper conductor, packet on the outside of at least one copper conductor in the graphite-copper recombination line
It covers and sets graphite linings, constitute graphite-copper recombination line.
Optionally, the graphite linings are mainly prepared by expanded graphite and reinforcing fiber line；
Optionally, the dosage of the reinforcing fiber line is the 10%-25% of expanded graphite quality, is chosen as 15%-20%.
Optionally, the reinforcing fiber includes one of inorfil line or a variety of.
Optionally, the inorfil line includes that glass wire, carbon fiber line, boron fibre line, whisker line and asbestos are fine
One of dimension is a variety of.
Optionally, the graphite protective layer includes the graphite protective layer with coaxial reversed braiding structure.
A kind of preparation method of above-mentioned graphite-based flexibility copper conductor earthing or grounding means is included on the outside of graphite-copper recombination line
Cladding setting graphite protective layer.
The preparation method simple process and low cost of graphite-based flexibility copper conductor earthing or grounding means of the present invention.
Optionally, the preparation method of the graphite-copper recombination line includes being wrapped in described at least one using Graphite cloth's cladding
On the outside of root copper conductor, graphite-copper recombination line is obtained.
Optionally, it is 250- that Graphite cloth's cladding, which is wrapped in the winding rate on the outside of at least one copper conductor,
300mm/min is chosen as 270-280mm/min.
Optionally, the preparation method of the Graphite cloth includes:
Reinforcing fiber line impregnation, wiring, two sides are uniformly laid with expanded graphite, compacting, curing molding, sanction respectively in proportion
It cuts.
Optionally, glue used by the impregnation includes one of electrically conducting adhesive or a variety of, preferably includes organic lead
One of electric bonding agent is a variety of, further preferably includes conductive acrylate adhesive.
Optionally, it is carried out on the outside of at least one graphite-copper recombination line using 2 or more graphite-copper recombination lines same
Axis reversely weaves, and graphite protective layer is prepared on the outside of graphite-copper recombination line.
Optionally, after at least one graphite-copper recombination line ties up bunchy, existed using 2 or more graphite-copper recombination lines
Coaxial reversed braiding is carried out on the outside of at least one graphite-copper recombination line, and graphite is prepared on the outside of graphite-copper recombination line
Protective layer.
A kind of application of above-mentioned graphite-based flexibility copper conductor earthing or grounding means, the graphite-based flexibility copper conductor earthing or grounding means
As earthing or grounding means component, it is preferably used as Traction Substation of Electric Railway earthing or grounding means component.
Graphite-based flexibility copper conductor earthing or grounding means of the present invention can as the substitution grounded parts of existing metallic ground material,
It is preferred for substituting existing Traction Substation of Electric Railway copper stranded conductor grounded parts.The graphite-based flexibility copper conductor ground connection
Device corrosion resistance is good, and ground resistance is low, and discharge capacity is strong, and flexibility is good, light-weight, easily constructs, overall life cycle cost
It is low, energy conservation and environmental protection.
Compared with prior art, the invention has the benefit that
Graphite-based flexibility copper conductor grounding device constructions of the present invention are simple, and preparation method simple process, corrosion resistance is good,
Ground resistance significant effect is reduced, discharge capacity is strong, and flexibility is good, and it is light-weight, it easily constructs, overall life cycle cost is low, energy conservation
Environmental protection solves the disadvantage that current all kinds of earthing materials, is the substitution earthing material of existing metallic ground material, is earthing material
First choice.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of specific embodiment graphite-based flexibility copper conductor earthing or grounding means cross-sectional structure schematic diagram of the present invention.
Fig. 2 is a kind of specific embodiment graphite-based flexibility copper conductor earthing or grounding means vertical section structure schematic diagram of the present invention.
Fig. 3 is that a kind of specific embodiment graphite-based flexibility copper conductor earthing or grounding means of the present invention connects with galvanized steel earthing material
Ground resistance changes over time curve.
Fig. 4 is that a kind of specific embodiment graphite-based flexibility copper conductor earthing or grounding means of the present invention and galvanized steel earthing material are complete
Life cycle cost changes over time curve.
Appended drawing reference:
1- copper conductor；2- graphite linings；3- graphite protective layer.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with the drawings and specific embodiments, but
Be it will be understood to those of skill in the art that it is following described embodiments are some of the embodiments of the present invention, rather than it is whole
Embodiment is merely to illustrate the present invention, and is not construed as limiting the scope of the invention.Based on the embodiments of the present invention, ability
Domain those of ordinary skill every other embodiment obtained without making creative work, belongs to guarantor of the present invention
The range of shield.The person that is not specified actual conditions in embodiment, carries out according to conventional conditions or manufacturer's recommended conditions.Agents useful for same
Or production firm person is not specified in instrument, is the conventional products that can be obtained by commercially available purchase.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
A kind of 1 earthing or grounding means of graphite-based flexibility copper conductor, 1 earthing or grounding means of graphite-based flexibility copper conductor include:
At least one graphite-copper recombination line；
Cladding setting graphite protective layer 3 on the outside of at least one graphite-copper recombination line.
1 grounding device constructions of graphite-based flexibility copper conductor of the present invention are simple, and corrosion resistance is good, and ground resistance is low, aerial drainage
Ability is strong, and flexibility is good, light-weight, easily constructs, overall life cycle cost is low, energy conservation and environmental protection.
It include at least one copper conductor in the graphite-copper recombination line in a kind of preferred embodiment of the present invention
1, cladding setting graphite linings 2, constitute graphite-copper recombination line on the outside of at least one copper conductor 1.
The present invention does not have particular/special requirement to the size of copper conductor 1, using normal dia copper conductor, such as
The flexibility, corrosion resistance and aerial drainage of copper conductor 1 can be effectively improved using the graphite-copper recombination line of specific structure
Ability, while its is light-weight, easily constructs, overall life cycle cost is low, energy conservation and environmental protection.
In a kind of preferred embodiment of the present invention, the graphite linings 2 are mainly by expanded graphite and reinforcing fiber line
It is prepared；
In a kind of preferred embodiment of the present invention, the dosage of the reinforcing fiber line is expanded graphite quality
10%-25% is chosen as 15%-20%.
The dosage of the reinforcing fiber line can requirement according to final field of employment to mechanical strength, through scientific algorithm
It is determined, using the amount ratio of the reinforcing fiber line and expanded graphite that calculate, gained graphite-copper can be effectively improved
The intensity of recombination line, and ensure that ground resistance is low, aerial drainage can be high.
Expanded graphite of the present invention can be used commercially available purchase and/or the modes such as voluntarily prepare and obtains, present invention tool
Expanded graphite in body embodiment is obtained using commercially available buying pattern, and manufacturer is that Lingshou County power reaches mineral products processing factory.
Common crystalline flake graphite is since carbide impurity is excessive, and its laminated structure is difficult to compression moulding, therefore, by dense
The acidifications such as sulfuric acid, hydrogen peroxide, potassium permanganate obtain expansible graphite, then pass through 1100 DEG C of height by expansible graphite
Temperature obtains the expanded graphite that can be used for compression moulding by processing in 3-5 seconds.Graphite is acidified, oxidation and expansion process
Afterwards, volume increases to original 100-200 times, at vermiform, therefore also known as worm graphite.Worm graphite light specific gravity, has
Stronger machinability.In addition, due to common crystalline flake graphite or acidifying graphite instantaneous expansion at high operating temperatures, no
Pipe is essential for elevated-temperature seal industry or electric system ground connection industry, acidification, the process of expansion.
In a kind of preferred embodiment of the present invention, the reinforcing fiber includes one of inorfil line or more
Kind.
In a kind of preferred embodiment of the present invention, the inorfil line include glass wire, carbon fiber line,
One of boron fibre line, whisker line and asbestos fibre are a variety of.
Inorfil line of the present invention can be used commercially available purchase and/or the modes such as voluntarily prepare and obtains, the present invention
High-strength glass fibre line is used in specific embodiment, the high-strength glass fibre line in the specific embodiment of the invention is using commercially available
Buying pattern obtains, and manufacturer is the town Tongling County Shun An Shuan Long glass factory, model 4800TEX.
In a kind of preferred embodiment of the present invention, the graphite protective layer 3 includes having coaxial reversed braiding knot
The graphite protective layer 3 of structure.
Using the graphite protective layer 3 of specific structure, facilitate the machine for sufficiently improving 1 earthing or grounding means of graphite-based flexibility copper conductor
Tool intensity, corrosion resistance be good and discharge capacity, while reducing ground resistance.
Further, since outer layer graphite protective layer 3 plays main molding and enhancing mechanical strength, and to internal layer stone
Ink-copper composite wire mechanical requirements are relatively low.Therefore, internal layer graphite-copper recombination line can improve conductivity, outer layer graphite as far as possible
Protective layer 3 can improve tensile strength as far as possible.
A kind of preparation method of above-mentioned 1 earthing or grounding means of graphite-based flexibility copper conductor is included on the outside of graphite-copper recombination line
Cladding setting graphite protective layer 3.
The preparation method simple process and low cost of 1 earthing or grounding means of graphite-based flexibility copper conductor of the present invention.
In a kind of preferred embodiment of the present invention, the preparation method of the graphite-copper recombination line includes using stone
Mo Bu cladding is wrapped in 1 outside of at least one copper conductor, obtains graphite-copper recombination line.
In a kind of preferred embodiment of the present invention, Graphite cloth's cladding is wrapped in at least one copper conductor
The winding rate in 1 outside is 250-300mm/min, is chosen as 270-280mm/min.
Using specific winding rate, the intensity of gained graphite-copper recombination line can be effectively improved, and ensures ground resistance
Low, discharge capacity is high.
In a kind of preferred embodiment of the present invention, the preparation method of the Graphite cloth includes:
Reinforcing fiber line impregnation, wiring, two sides are uniformly laid with expanded graphite, compacting, curing molding, sanction respectively in proportion
It cuts.
In a kind of preferred embodiment of the present invention, glue used by the impregnation includes one in electrically conducting adhesive
Kind is a variety of, preferably includes one of organic electrically conducting adhesive or a variety of, further preferably includes conductive acrylate bonding
Agent.
Electrically conducting adhesive of the present invention can be used commercially available purchase and/or the modes such as voluntarily prepare and obtains, the present invention
Conductive acrylate adhesive (the mixing addition carbon nanotube in water-and acrylate lotion) in specific embodiment uses
Commercially available buying pattern obtains, Dongguan City Xin Mao Chemical Co., Ltd..
In a kind of preferred embodiment of the present invention, using 2 or more graphite-copper recombination lines in at least one
Coaxial reversed braiding is carried out on the outside of graphite-copper recombination line, and graphite protective layer 3 is prepared on the outside of graphite-copper recombination line.
In a kind of preferred embodiment of the present invention, after at least one graphite-copper recombination line ties up bunchy, adopt
Coaxial reversed braiding is carried out on the outside of at least one graphite-copper recombination line with 2 or more graphite-copper recombination lines, in graphite-
Graphite protective layer 3 is prepared on the outside of copper composite wire.
At least one graphite-copper recombination line between each other can be parallel to each other or constitutes braiding structure.
The mechanical strength of 1 earthing or grounding means of gained graphite-based flexibility copper conductor can be sufficiently ensured using specific weave patterns
And electric conductivity, improve discharge capacity.
A kind of application of above-mentioned 1 earthing or grounding means of graphite-based flexibility copper conductor, the ground connection of graphite-based flexibility copper conductor 1 dress
It sets and is used as earthing or grounding means component, be preferably used as Traction Substation of Electric Railway earthing or grounding means component.
1 earthing or grounding means of graphite-based flexibility copper conductor of the present invention can be as the substitution grounding parts of existing metallic ground material
Part is preferred for substituting existing Traction Substation of Electric Railway copper stranded conductor grounded parts.The graphite-based flexibility copper conductor 1
Earthing or grounding means corrosion resistance is good, and ground resistance is low, and discharge capacity is strong, and flexibility is good, light-weight, easily constructs, life cycle management
It is at low cost, energy conservation and environmental protection.
Embodiment 1
A kind of preparation method of graphite-based flexibility copper conductor earthing or grounding means, comprising:
A. by high-strength glass fibre line (dosage is the 10% of expanded graphite quality) wiring, impregnation, later above and below wiring
Two sides are laid with expanded graphite respectively, using roll squeezer roll-in, are heating and curing, cut to obtain Graphite cloth that (2cm wide, thickness are about 22 μ
M), it is wound on drum；
B. a piece copper conductor of winding is wrapped up into through wire winding in Graphite clothGraphite-copper recombination line is obtained, is twined
It is 250mm/min around rate；
C. 61 woven devices of graphite-copper recombination line is taken to tie up bunchy (be parallel to each other fixation, unbraided)；
D. using 24 coaxial reversed weavings of graphite-copper recombination lines warp on the outside of 61 graphite-copper recombination lines
It is wrapped around graphite protective layer.
Embodiment 2
A kind of preparation method of graphite-based flexibility copper conductor earthing or grounding means, comprising:
A. by high-strength glass fibre line (dosage is the 15% of expanded graphite quality) wiring, impregnation, later above and below wiring
Two sides are laid with expanded graphite respectively, using roll squeezer roll-in, are heating and curing, cut to obtain Graphite cloth that (2cm wide, thickness are about 22 μ
M), it is wound on drum；
B. a piece copper conductor of winding is wrapped up into through wire winding in Graphite clothGraphite-copper recombination line is obtained, is twined
It is 300mm/min around rate；
C. 37 woven devices of graphite-copper recombination line is taken to tie up bunchy (be parallel to each other fixation, unbraided)；
D. using 24 coaxial reversed weavings of graphite-copper recombination lines warp on the outside of 37 graphite-copper recombination lines
It is wrapped around graphite protective layer.
Embodiment 3
A kind of preparation method of graphite-based flexibility copper conductor earthing or grounding means, comprising:
A. by high-strength glass fibre line (dosage is the 20% of expanded graphite quality) wiring, impregnation, later above and below wiring
Two sides are laid with expanded graphite respectively, using roll squeezer roll-in, are heating and curing, cut to obtain Graphite cloth that (2cm wide, thickness are about 22 μ
M), it is wound on drum；
B. a piece copper conductor of winding is wrapped up into through wire winding in Graphite clothGraphite-copper recombination line is obtained, is twined
It is 270mm/min around rate；
C. 49 woven devices of graphite-copper recombination line is taken to tie up bunchy (be parallel to each other fixation, unbraided)；
D. using 24 coaxial reversed weavings of graphite-copper recombination lines warp on the outside of 49 graphite-copper recombination lines
It is wrapped around graphite protective layer.
Embodiment 4
A kind of preparation method of graphite-based flexibility copper conductor earthing or grounding means, comprising:
A. by high-strength glass fibre line (dosage is the 25% of expanded graphite quality) wiring, impregnation, later above and below wiring
Two sides are laid with expanded graphite respectively, using roll squeezer roll-in, are heating and curing, cut to obtain Graphite cloth that (2cm wide, thickness are about 22 μ
M), it is wound on drum；
B. a piece copper conductor of winding is wrapped up into through wire winding in Graphite clothGraphite-copper recombination line is obtained, is twined
It is 280mm/min around rate；
C. 75 woven devices of graphite-copper recombination line is taken to tie up bunchy (be parallel to each other fixation, unbraided)；
D. using 24 coaxial reversed weavings of graphite-copper recombination lines warp on the outside of 75 graphite-copper recombination lines
It is wrapped around graphite protective layer.
Correlated performance verification experimental verification, equal table are carried out to graphite-based flexibility copper conductor earthing or grounding means obtained by various embodiments of the present invention
Reveal excellent performance, comprising:
Anticorrosive: graphite material has good conductive property, while having long-term corrosion resistance.It is resistant to acid (ph
Value 3~5), alkali (ph value 9~12), salting liquid, seawater it is long-term erosion (2~4 years are lasted in laboratory under the above conditions not have
Have significant change), it can be used safely at -200 DEG C~800 DEG C.With highly conductive, strong corrosion resistant performance.Simultaneously using height in technique
Strong fiber and steel bar reinforced technology, has heat-proof combustion-resistant, the erosion performance of acid and alkali-resistance and organic solvent.Graphite material is in stray electrical current simultaneously
Cell reaction does not occur under effect.It substantially increases and is grounded reliable, stability, thus it is speculated that service life is more than 30 years.
Ground resistance significantly reduces: ground resistance is mainly by the resistance of grounding body itself, contact resistance and spreading resistance group
At contact resistance is ground resistance chief component, and reducing contact resistance is the key that reduce ground resistance.Due to the present invention
Using graphite rope knitting skill, after placing into the soil, grounding body itself has good compactedization to act on soil, so that grounding body
It can combine closely between soil, greatly reduce contact resistance.Ground resistance is just significantly reduced in this way.
Discharge capacity is strong: copper stranded conductor or other metal materials are as earthing material, in high frequency lightning current or high-frequency percussion electricity
Under stream effect, due to the influence of metal material kelvin effect, effective aerial drainage section has than its nominal section to be substantially reduced
Disadvantage, cannot sufficiently rapid aerial drainage, be the principal element of current lightning protection Frequent Accidents.And graphite material is non-metallic material
Material, non-magnetic material utmostly reduce inductance, and there is no kelvin effects to influence, and drainage area is big, can guarantee reliably to let out
Stream.
The resistance and aerial drainage utilization rate under different condition measured by unlike material are had recorded in table 1.
1 unlike material resistance of table and aerial drainage utilization rate correlation data
It can be seen from Table 1 that graphite-based flexibility copper conductor earthing or grounding means of the present invention is able to maintain it at different conditions
Low-resistance characteristic.In addition, the band steel of 40mm × 4mm, magnetism causes kelvin effect serious, in addition the influence of band steel shape, high
The kelvin effect of frequency causes its aerial drainage utilization rate less than 5%；Graphite-based flexibility copper conductor earthing or grounding means of the present invention, it is non magnetic
Its high frequency kelvin effect is effectively relieved in characteristic, and in conjunction with special process structure, aerial drainage utilization rate can be up to 85% or more.
Using softening technology production technology: graphite-based flexibility copper conductor earthing or grounding means of the present invention can draw, can turn round, can roll over, can
Pressure can roll up, and rough surface constitutes pore, with soil creep, can not depart from soil occlusion bonding and not generate air circle
Face, expands significantly and the contact surface of soil, ground connection laying good compatibility can cooperate mud backfill, friction reducer, antifreeze etc. to make
With.Using specific weaving, the mechanical strength of gained graphite-based flexibility copper conductor earthing or grounding means, China and foreign countries are effectively increased
The tensile strength that diameter reaches the graphite-based flexibility copper conductor earthing or grounding means of the present invention of 28mm can reach 100kgf, and outer diameter reaches
The tensile strength of the graphite-based flexibility copper conductor earthing or grounding means of the present invention of 58mm can reach 500kgf, and graphite-based of the present invention is flexible
The mechanical strength of copper conductor earthing or grounding means is fully able to meet daily construction demand.
Light-weight, easily construct: graphite-based flexibility copper conductor earthing or grounding means of the present invention can adapt to all kinds of execution conditions, transport
It is convenient to construct, and transports light, can coil, can the wiring of snakelike excavations, avoid rock, trees, backfill is simple, can mud backfill, time
Fill out compact, connection is simple, and crimping can be used, and without welding, is not necessarily to the site requirements such as power supply welding machine.
Overall life cycle cost (LCC) is minimum: graphite-based flexibility copper conductor earthing or grounding means of the present invention can once be put into, for a long time
Stablize, remove periodic detection ground resistance from, avoid grounding reconstruction repeatability investment, save human and material resources, life cycle management at
This (LCC) is minimum.Improve resource utilization: earthed system is chronically at dormant state, and lightning stroke or short circuit Shi Caifa only occurs
The effect of waving, lightning stroke or short circuit are minimum probability events, do not waste precious steel copper material.
Fig. 3 shows graphite-based flexibility copper conductor earthing or grounding means (soft graphite body) of the present invention and galvanized steel earthing material phase
Than ground resistance over time changes, it can be seen that galvanized steel earthing material is with the extension for using the time, ground resistance
In significantly raised trend, and graphite-based flexibility copper conductor earthing or grounding means of the present invention is with the extension for using the time, ground resistance front and back
It tends towards stability.
Fig. 4 shows graphite-based flexibility copper conductor earthing or grounding means (soft graphite body) of the present invention and galvanized steel earthing material phase
Than the cost in life cycle management compares, it can be seen that galvanized steel earthing material with the extension for using the time, it is all kinds of at
Originally it dramatically increases, and graphite-based flexibility copper conductor earthing or grounding means of the present invention, with the extension for using the time, cost is not further added by, zinc-plated
The overall life cycle cost of steel to be significantly higher than the life cycle management of graphite-based flexibility copper conductor earthing or grounding means of the present invention at.
Energy conservation and environmental protection: the production discharge of the year-on-year metal material of graphite-based flexibility copper conductor earthing or grounding means of the present invention and energy consumption are wanted
It is low.Tradition ground connection consumption steel, need using number in terms of ten million ton/year, and can not recycle；The resource consumption of 1 ton of steel: power consumption
600 degree=240kg standard coal consumes 3.5 tons of new water, the disposal of pollutants of 1 ton of steel: CO2: 600kg, SO2: 23kg, NOX: 9kg, carbon dust
Dirt: 170kg.
Although illustrate and describing the present invention with specific embodiment, it will be appreciated that the above various embodiments is only used
To illustrate technical solution of the present invention, rather than its limitations；Those skilled in the art should understand that: without departing substantially from this hair
It in the case where bright spirit and scope, is possible to modify the technical solutions described in the foregoing embodiments, or to wherein
Some or all of technical characteristic is equivalently replaced；And these are modified or replaceed, and do not make the essence of corresponding technical solution
It departs from the scope of the technical solutions of the embodiments of the present invention；It is, therefore, intended that in the following claims including belonging to the present invention
All these substitutions and modifications in range.
Claims (13)
1. a kind of graphite-based flexibility copper conductor earthing material, which is characterized in that the graphite-based flexibility copper conductor earthing material packet
It includes:
More graphite-copper recombination lines；
Cladding setting graphite protective layer on the outside of the more graphite-coppers recombination line；
It include at least one copper conductor in the graphite-copper recombination line, cladding setting graphite on the outside of at least one copper conductor
Layer constitutes graphite-copper recombination line；
The graphite protective layer includes the graphite protective layer with coaxial reversed braiding structure；
The preparation method of the graphite-copper recombination line includes being wrapped in outside at least one copper conductor using Graphite cloth's cladding
Side obtains graphite-copper recombination line；Wherein, the preparation method of the Graphite cloth includes: in proportion by reinforcing fiber line impregnation, cloth
Line, two sides are uniformly laid with expanded graphite respectively, compacting, curing molding, cut, and Graphite cloth's cladding is wrapped in described at least one
Winding rate on the outside of root copper conductor is 250-300mm/min；The width of the Graphite cloth is 2cm, with a thickness of 22 μm；
Coaxial reversed braiding is carried out on the outside of the more graphite-copper recombination lines using 2 or more graphite-copper recombination lines, in stone
Graphite protective layer is prepared on the outside of ink-copper composite wire.
2. a kind of graphite-based flexibility copper conductor earthing material according to claim 1, which is characterized in that the reinforcing fiber
The dosage of line is the 10%-25% of expanded graphite quality.
3. a kind of graphite-based flexibility copper conductor earthing material according to claim 1, which is characterized in that the reinforcing fiber
The dosage of line is the 15%-20% of expanded graphite quality.
4. a kind of graphite-based flexibility copper conductor earthing material according to claim 1, which is characterized in that the reinforcing fiber
Including one of inorfil line or a variety of.
5. a kind of graphite-based flexibility copper conductor earthing material according to claim 4, which is characterized in that the inorfil
Line includes one of glass wire, carbon fiber line, boron fibre line, whisker line and asbestos fibre or a variety of.
6. a kind of preparation method of graphite-based flexibility copper conductor earthing material a method as claimed in any one of claims 1 to 5, feature exist
In being included in cladding setting graphite protective layers on the outside of more graphite-copper recombination lines；
The preparation method of the graphite-copper recombination line includes being wrapped in outside at least one copper conductor using Graphite cloth's cladding
Side obtains graphite-copper recombination line；
Coaxial reversed braiding is carried out on the outside of the more graphite-copper recombination lines using 2 or more graphite-copper recombination lines, in stone
Graphite protective layer is prepared on the outside of ink-copper composite wire；
The preparation method of the Graphite cloth includes: that reinforcing fiber line impregnation, wiring, two sides are uniformly laid with expansion respectively in proportion
Graphite, curing molding, is cut compacting；
It is 250-300mm/min that Graphite cloth's cladding, which is wrapped in the winding rate on the outside of at least one copper conductor,.
7. a kind of preparation method of graphite-based flexibility copper conductor earthing material according to claim 6, which is characterized in that institute
Stating the winding rate that Graphite cloth's cladding is wrapped on the outside of at least one copper conductor is 270-280mm/min.
8. a kind of preparation method of graphite-based flexibility copper conductor earthing material according to claim 6, which is characterized in that institute
It includes one of electrically conducting adhesive or a variety of for stating glue used by impregnation.
9. a kind of preparation method of graphite-based flexibility copper conductor earthing material according to claim 6, which is characterized in that institute
Stating glue used by impregnation includes one of organic electrically conducting adhesive or a variety of.
10. a kind of preparation method of graphite-based flexibility copper conductor earthing material according to claim 6, which is characterized in that
Glue used by the impregnation includes conductive acrylate adhesive.
11. a kind of preparation method of graphite-based flexibility copper conductor earthing material according to claim 6, which is characterized in that
After the more graphite-copper recombination lines tie up bunchy, using 2 or more graphite-copper recombination lines in the more graphite-coppers
Coaxial reversed braiding is carried out on the outside of recombination line, and graphite protective layer is prepared on the outside of graphite-copper recombination line.
12. a kind of application of graphite-based flexibility copper conductor earthing material a method as claimed in any one of claims 1 to 5, which is characterized in that
The graphite-based flexibility copper conductor earthing material is used as earthing or grounding means component.
13. a kind of application of graphite-based flexibility copper conductor earthing material according to claim 12, which is characterized in that institute
Graphite-based flexibility copper conductor earthing material is stated as Traction Substation of Electric Railway earthing or grounding means component.
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| CN103490180A (en) * | 2013-10-23 | 2014-01-01 | 阮江军 | Novel graphite composite grounding material and preparation method thereof |
| CN106450825A (en) * | 2016-12-01 | 2017-02-22 | 武汉黉门电工科技有限公司 | Graphite-metal compound anticorrosion flexible grounding material and manufacturing process thereof |
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| WO2010075873A1 (en) * | 2008-12-29 | 2010-07-08 | Prysmian S.P.A. | Submarine electric power transmission cable with cable armour transition |
| CN204333295U (en) * | 2015-01-16 | 2015-05-13 | 武汉科迪奥电力科技有限公司 | Graphite-based flexible compound earth electrode |
| CN104638387B (en) * | 2015-02-26 | 2017-03-01 | 广东电网有限责任公司佛山供电局 | Graphite bonded earth electrode and preparation method thereof |
| CN105514629B (en) * | 2016-01-28 | 2017-10-13 | 国家电网公司 | A kind of compound earthing pole |
| CN105896110A (en) * | 2016-06-07 | 2016-08-24 | 宁夏中科天际防雷股份有限公司 | Corrosion-resistant grounding device with graphene coating and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103490180A (en) * | 2013-10-23 | 2014-01-01 | 阮江军 | Novel graphite composite grounding material and preparation method thereof |
| CN106450825A (en) * | 2016-12-01 | 2017-02-22 | 武汉黉门电工科技有限公司 | Graphite-metal compound anticorrosion flexible grounding material and manufacturing process thereof |
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