CN103500595B - Low kelvin effect graphite compound earthing material and preparation method thereof - Google Patents
Low kelvin effect graphite compound earthing material and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of low kelvin effect graphite compound earthing material and preparation method thereof, graphite compound earthing material outward appearance of the present invention is rope form or twisted wire shape, comprises the outermost layer composite stone line of ink marker braid wrapped up outside the secondary outer composite stone line of ink marker layer and secondary outer composite stone line of ink marker layer that wrap up outside flexible core, flexible core.Graphite compound earthing material of the present invention have good corrosion-resistant, conductivity, flexible, low kelvin effect, cheap, easy transport, with soil in conjunction with accurate advantages of higher; Due to cheap, also can avoid artificially stealing destruction, all need the engineering field of electrical grounding to be applicable to transformer station, overhead power transmission line pole tower, elevation building etc.
Description
Technical field
The present invention relates to electric power system Lightning protection field, particularly relate to a kind of low kelvin effect graphite compound earthing material and preparation method thereof.
Background technology
System is the critical facility ensureing power equipment safety reliability service power ground.The earth electrode of existing power equipment mainly has the following disadvantages: (1) seriously corroded.Common metal earth electrode estimates 20 years useful life, the even i.e. seriously corrosion in 3 ~ 5 years had.(2) cost is high.The good copper metal price of anticorrosion ability is expensive, domestic less employing.(3) not high with soil bonding tightness.Metallic ground body due to the hard fragility feature of itself, in laid processes with soil in conjunction with defective tightness, contact resistance is large and easily form the electrochemical corrosion of oxygen concentration difference.(4) inconvenience transport and construction.Metallic ground material weight is heavy, the large inconvenience of volume is transported and construction.(5) metal material subjects to theft destruction.Metal material secondary peddle be worth high, ground lead, ground connection box, earth electrode etc. suffer artificial theft repeatly, destroy.
Graphite material electric conductivity is excellent, has good plasticity and stability, is again good resistant material simultaneously, has abundant reserves in China.Graphite electrode is widely used at industrial circles such as smelting, batteries.In electric power system earth electrode field, rectangle and cylindrical graphite grounding module have become a kind of grounding reconstruction material.The Chinese patent of notification number CN1042077C " thunder-preventing graphite grounding device and making and construction method " thereof, the Chinese patent " anti-corrosion grounding module " of notification number CN201478468U, the Chinese patent " a kind of graphite grounding module " of publication No. CN102496790A, the Chinese patent " anti-thunderstrock grounding device of composite carbon material and manufacture method thereof " of publication number CN1110013A, the Chinese patent " manufacture method of low resistance earthing module material " of notification number CN1047881C, the Chinese patent " metal-graphite carthing body " of notification number CN2454912Y, the Chinese patent " grounding conductive concrete " of notification number CN1194930C, the Chinese patent " ground mould with physical resistance reducing agent " of notification number CN2845202Y, the Chinese patent " integrated connection formula expandable graphite nonmetal grounding device " of notification number CN2733631Y, Chinese patent of notification number CN101030458B " non-corrosive assembled grounding electrode and resistance-lowering material and production method " thereof etc. describes and is connected with metal by square or cylindrical graphite, imbed underground and can realize corrosion resistant ground connection.
Graphite also has application as resistance reducing agent material in electric power system ground connection.The Chinese patent " long-effective corrosion-prevention physical resistance-reducing agent " of notification number CN101752021B, the Chinese patent " long service life, corrosion-proof, and electric resistance reducing agent for earthing (modified model) " of notification number CN100498978C, the Chinese patent " a kind of resistance reducing agent " of notification number CN100490020C, the Chinese patent " solid grounded resistance reducing agent and preparation method thereof " etc. of notification number CN1249730C describe the graphite resistance reducing agent for grounding reconstruction.
Above-mentioned graphite grounding module is due to problems such as production cost is high, fragility easy fracture, installation inconvenience, and actual popularization faces some difficulties.Above-mentioned graphite resistance reducing agent is because its poor stability, resistance reducing effect are limited, easily cause the shortcoming of the aspects such as metallic ground body burn into contaminated soil to make its application still be subject to a definite limitation.
Summary of the invention
For existing electric power system lightning-proof grounding body Problems existing, the invention provides a kind of corrosion-resistant, conductivity is good, pliability good, cheap low kelvin effect graphite compound earthing material and preparation method thereof.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
One, low kelvin effect graphite compound earthing material, its outward appearance
For rope form or twisted wire shape, comprise the outermost layer composite stone line of ink marker braid wrapped up outside the secondary outer composite stone line of ink marker layer and secondary outer composite stone line of ink marker layer that wrap up outside flexible core, flexible core, wherein:
Secondary outer composite stone line of ink marker layer is made up of the first composite stone line of ink marker of longitudinal arrangement outside flexible core, the first composite stone line of ink marker is obtained by the first composite stone ink ribbon twisting, and the first described composite stone ink ribbon comprises upper and lower myrmekite layer of ink and the fibrous skeleton between upper and lower myrmekite layer of ink;
Outermost layer composite stone line of ink marker braid is woven by the second composite stone line of ink marker and obtains, the second composite stone line of ink marker is obtained by the second composite stone ink ribbon twisting, and the second described composite stone ink ribbon comprises upper and lower myrmekite layer of ink and the fibrous skeleton between upper and lower myrmekite layer of ink.
The fibrous skeleton between upper and lower myrmekite layer of ink of the first composite stone ink ribbon and the second composite stone ink ribbon mainly plays " skeleton " supporting role, and the described fibrous skeleton between upper and lower myrmekite layer of ink is one or more in organic fiber, inorfil and metallic fiber.The fibrous skeleton between upper and lower myrmekite layer of ink of the first composite stone ink ribbon and the second composite stone ink ribbon can be identical or different.
For strengthening the conductivity of time outer composite stone line of ink marker layer, a kind of preferred version is: the fibrous skeleton between upper and lower myrmekite layer of ink of the first composite stone ink ribbon at least comprises conductive fiber, described conductive fiber is one or more in metallic fiber, alloy fiber and conductive carbon fibre, and the ratio that conductive fiber accounts for fibrous skeleton is not restricted.
For strengthening the mechanical property of outermost layer composite stone line of ink marker braid, a kind of preferred version is: the fibrous skeleton between upper and lower myrmekite layer of ink of the second composite stone ink ribbon at least comprises toughened fiber, described toughened fiber be preferably in Kafra fiber, carbon fiber and nickel fiber one or more, the ratio that toughened fiber accounts for fibrous skeleton is not restricted.
The fibrous skeleton outer surface between upper and lower myrmekite layer of ink of above-mentioned first composite stone ink ribbon and the second composite stone ink ribbon is coated with adhesive phase.
Two, the preparation method of low kelvin effect graphite compound earthing material, comprises step:
Step 1, roll-in is carried out to worm graphite and makes worm graphite paper, fibrous skeleton of arranging between two-layer worm graphite paper obtains the first composite graphite paper and the second composite graphite paper, first composite graphite paper is identical with the fibrous skeleton that the second composite graphite paper bag is drawn together or not identical, carry out roll-in to the first composite graphite paper and the second composite graphite paper, along fibrous skeleton, longitudinally cutting the first composite graphite paper and the second composite graphite paper obtain the first composite stone ink ribbon and the second composite stone ink ribbon;
Step 2, carries out twisting to the first composite stone ink ribbon and the second composite graphite band respectively and obtains the sub-thread first composite stone line of ink marker and the sub-thread second composite stone line of ink marker;
Step 3, adopt braiding machine to be longitudinally wrapped in by the sub-thread first composite stone line of ink marker outside flexible core and obtain at least one level outer composite stone line of ink marker layer, meanwhile, the sub-thread second composite stone line of ink marker is knitted to outside time outer composite stone line of ink marker layer and obtains at least one deck outermost layer composite stone line of ink marker braid.
Above-mentioned worm graphite can be adopted and obtain with the following method:
Successively acidifying is carried out to crystalline flake graphite and oxidation obtains expansible graphite, expansible graphite expanded 5 ~ 6s at 850 ~ 950 DEG C of temperature is obtained worm graphite.
Fibrous skeleton of arranging between two-layer worm graphite paper described in step 1 obtains the first composite graphite paper and the second composite graphite paper, and described fibrous skeleton is the fibrous skeleton of dipped adhesive.
In step 3, adopt single track braiding, double track braiding or many rails weaving manner to be knitted to by the sub-thread second composite stone line of ink marker outside time outer composite stone line of ink marker layer and obtain outermost layer composite stone line of ink marker braid.
In step 3, adopt cover volume mode to be knitted to by the sub-thread second composite stone line of ink marker outside time outer composite stone line of ink marker layer and obtain multilayer outermost layer composite stone line of ink marker braid.
Adopt circular winding displacement plate to carry out assisting knitting in step 3, described circular winding displacement plate offers flexible core entrance hole, around flexible core entrance hole, offer at least one deck first composite stone line of ink marker entrance hole; Before braiding, the flexible core entrance hole of flexible core from winding displacement plate is passed, the first composite stone line of ink marker entrance hole of the sub-thread first composite stone line of ink marker from winding displacement plate is passed.
In the present invention, flexible core can expand the diameter of earthing material, increases the contact area of earthing material and soil.First, obviously can reduce the earth resistance of ground network, improve the lightning withstand level of power equipment, reduce step voltage and touch voltage, the personal safety of maintenance operation personnel; Secondly, flexible core obviously can reduce the kelvin effect in ground network high-frequency current diffusing process, adopts nonmetal flexible inner core Substitute For Partial graphite line that is cheap, wide material sources, can significantly saving resource, reduces manufacturing cost; Again, the feature that relative graphite line is flexible, tensile strength is general, adopts larger, the flexible polymer flexibility inner core of hardness, and when weaving outermost composite stone line of ink marker braid, sub-thread graphite litzendraht wire can load more tension load; Finally, flexible core selects tensile strength to be better than the material of graphite line, significantly improves the mechanical property of earthing material, earthing material of the present invention be can be applicable in the earth work in the region such as frozen soil layer, rock.
Secondary outer field composite stone line of ink marker layer, along longitudinal arrangement outside flexible core, mainly plays electric action.Its current conducting path is shorter, and compactness between graphite line is higher.Form the first composite stone line of ink marker of time outer composite stone line of ink marker layer, one or more conductive fibers of alternative compound strengthen the electric conductivity of the first composite stone line of ink marker.
Outermost composite stone line of ink marker braid mainly plays global formation and electric action.Form the second composite stone line of ink marker of outermost layer composite stone line of ink marker braid, one or more toughened fibers of alternative compound strengthen the mechanical property of the composite stone line of ink marker, to improve the mechanical strength of earthing material entirety.Different weaving manners is adopted to improve the compactness of outer field composite stone line of ink marker braid; When carrying out multilayer cover volume, each braid adopts graphite line quantity to increase progressively successively from inside to outside, and its manufacturing cost is completely controlled.
Compared to the prior art, the present invention has following characteristics:
1, graphite compound earthing material of the present invention have good corrosion-resistant, conductivity, flexible, low kelvin effect, cheap, easy transport, with soil in conjunction with accurate advantages of higher; Due to cheap, also can avoid artificially stealing destruction.
2, simple, the low in raw material price of preparation technology of the present invention, energy-conserving and environment-protective, laying simple and flexible, be applicable to producing in enormous quantities and application.
3, the present invention provides a practicable approach for electric power system Lightning protection field, and all need the engineering field of electrical grounding to be applicable to transformer station, overhead power transmission line pole tower, elevation building etc.
Accompanying drawing explanation
Fig. 1 is composite graphite paper schematic diagram;
Fig. 2 is winding displacement plate schematic diagram;
Fig. 3 is that the one of graphite compound earthing material specifically implements structural representation;
Fig. 4 is that graphite compound earthing material uses schematic diagram.
Wherein, 1-upper strata worm graphite paper; 2-fibrous skeleton; 3-lower floor worm graphite paper; 4-winding displacement plate; 5-flexible core entrance hole; 6-first composite stone line of ink marker incoming line; 7-composite stone line of ink marker braid; 8-composite stone line of ink marker layer; 9-flexible core; 10-gold utensil joint; 11-graphite compound earthing material; 12-air layer, 13-ground level; 14-soil.
Embodiment
The invention provides a kind of low kelvin effect graphite compound earthing material, this graphite compound earthing material comprises three-decker, sees Fig. 3, and internal layer is flexible core (9), secondary skin is the composite stone line of ink marker layer (8) of at least one deck, and outermost layer is the composite stone line of ink marker braid (7) of at least one deck.
Describe the preparation method of graphite compound earthing material of the present invention in detail below in conjunction with embodiment and accompanying drawing, but protection range is not limited to the method.
1, worm graphite is prepared.
Worm graphite can directly be bought, and also can prepare voluntarily.This specifically implements with crystalline flake graphite to be raw material, prepares worm graphite voluntarily, is specially:
(1) expansible graphite is prepared:
Adopt sulfuric acid or nitric acid acidifying crystalline flake graphite, adopt strong oxidizer (e.g., KMnO
4, KClO
4or H
2o
2) oxidation crystalline flake graphite, can expansible graphite be obtained;
(2) worm graphite is prepared:
By expansible graphite expanded 5 ~ 6s at 850 ~ 950 DEG C of temperature, obtain worm graphite.
2, the first composite stone ink ribbon and the second composite stone ink ribbon is prepared.
(1) adopt rolling equipment that worm graphite is pressed into worm graphite paper, the fibrous skeleton (2) of dipped adhesive of arranging between two-layer worm graphite paper (1,3) obtains composite graphite paper, sees Fig. 1.
Fibrous skeleton (2) uniform spreading of one or more dipped adhesives is located in lower floor's worm graphite paper (3), at 110 ~ 300 DEG C of temperature, carries out the thermosetting process of 10 ~ 40s, afterwards, lay upper strata worm graphite paper (1); Rolling equipment is adopted to make composite graphite paper through at least twice roll-in.Composite graphite paper bag draws together the first composite graphite paper and the second composite graphite paper, and the first composite graphite paper and the interior fibrous skeleton laid of the second composite graphite paper can be the same or different.
As a kind of preferred version, at least comprise conductive fiber between the two-layer worm graphite paper of the first composite graphite paper, conductive fiber can be one or more in metallic fiber, alloy fiber and conductive carbon fibre.Mechanics fortifying fibre is at least comprised between the two-layer worm graphite paper of the second composite graphite paper.
Above-mentioned adhesive can be thermosetting polymer glue or conducting resinl, wherein, thermosetting polymer glue can be acrylic size, polyurethane/PU glue, amino resin adhesive, phenolic resin glue, epoxide-resin glue, furane resins glue, resorcin-formaldehyde resin adhesive, diformazan stupid-formaldehyde resin adhesive, unsaturated polyester ester gum, composite resin glue, polyimides glue or urea-formaldehyde resin adhesive etc.; Conducting resinl can be cupric powder conductive adhesive, nickel powder conducting resinl, plating macromolecular compound conducting resinl, carbon black conducting resin, chopped carbon fiber conducting resinl or graphite conductive adhesive.
Above-mentioned fibrous skeleton can be organic fiber (such as: polyester fiber/terylene, Fypro/polyamide fibre or nylon, vinal/polyvinyl, polyacrylonitrile fibre/acrylic fibers, polypropylene fibre/polypropylene fibre or polyvinyl chloride fibre/polyvinyl chloride fibre), inorfil (such as: glass fibre, carbon fiber, boron fibre, kevlar fiber or ceramic fibre) or metallic fiber (such as: copper wire, nickel wire or stainless steel wire).Being laid in fibrous skeleton between two-layer worm graphite paper can be thread, wire or band shape.
(2) the first composite graphite paper is cut and the second composite graphite paper obtains the first composite stone ink ribbon and the second composite stone ink ribbon.
Longitudinally the first composite graphite paper is cut respectively and the second composite graphite paper obtains the first composite stone ink ribbon and the second composite stone ink ribbon along fiber.
Because outermost layer composite stone line of ink marker braid is high to mechanical property requirements, so can select to add toughened fiber to strengthen its mechanical property in the second composite stone ink ribbon.Secondary outer composite stone line of ink marker layer due to focus on electric conductivity, so can select to add conductive fiber to strengthen conductivity in the first composite stone ink ribbon.
As a kind of preferred version, the first composite stone ink ribbon comprises 1 ~ 3 metallic fiber and/or alloy fiber, or comprises 1 ~ 2 conductive carbon fibre.The conductive carbon fibre conductivity adopted should be greater than 1 × 10
-3Ω cm.Second composite stone ink ribbon comprises 1 ~ 3 toughened fiber, and this toughened fiber is preferably Kafra fiber, can select 200D, 400D, 600D, 800D or 1000D model Kafra fiber.
3, respectively twisting is carried out to the first composite stone ink ribbon and the second composite graphite band and obtain the sub-thread first composite stone line of ink marker and the sub-thread second composite stone line of ink marker.
Adopt twisting machine to carry out unidirectional twist system to composite graphite band and obtain sub-thread graphite line, gained sub-thread graphite line diameter about 2 ~ 4mm, twisting machine rotating speed is preferably 60 ~ 80r/m.
4, adopt braiding machine outside flexible core, weave time outer composite stone line of ink marker layer and outermost layer composite stone line of ink marker braid.
This step adopts circular winding displacement plate to assist establishment, structure is shown in Fig. 2, winding displacement plate is offered flexible core entrance hole (5), some first composite stone line of ink marker entrance holes (6) be opened in flexible core entrance hole (5) for the center of circle circumferentially, in Fig. 2, flexible core entrance hole (5) around offers 2 layer of first composite stone line of ink marker entrance hole (6).
During braiding, first, the flexible core entrance hole (5) of flexible core from winding displacement plate is passed, the first composite stone line of ink marker entrance hole (6) of the sub-thread first composite stone line of ink marker from winding displacement plate is passed, if need to wrap up one deck composite stone line of ink marker layer outside flexible core, then only by the sub-thread first composite stone line of ink marker certain layer first composite stone line of ink marker entrance hole (6) through winding displacement plate; If need wrapped multiple composite stone line of ink marker layer outside flexible core, then select multilayer first composite stone line of ink marker entrance hole (6) of the sub-thread first composite stone line of ink marker through winding displacement plate.Then, adopt braiding machine, the sub-thread first composite stone line of ink marker is longitudinally wrapped in outside flexible core and obtains at least one deck composite graphite line layer, meanwhile, the sub-thread second composite stone line of ink marker is knitted to outside composite stone line of ink marker layer and obtains at least one deck composite graphite line braid.The weaving manner of composite stone line of ink marker braid can adopt single track braiding, double track braiding or many rails weaving manner; Also cover volume mode can be adopted to weave MULTILAYER COMPOSITE graphite line braid.
In braiding process, the first composite stone line of ink marker for secondary outer composite stone line of ink marker layer should evenly be arranged in flexible core surrounding, and envelopes flexible core as far as possible completely; Sub-thread second composite graphite line tension for outermost layer composite stone line of ink marker braid requires to be 5 ~ 60N, and has good compactness and electrical contact between the sub-thread second composite stone line of ink marker; Material braiding speed is 200 ~ 750mm/min.
In this step, flexible core requires to have flexible, have certain support strength, moisture-resistant, resistant to thermal aging and resist chemical, and it specifically can be Sythetic fiber rope/bundle, inorfil rope/bundle, rubber tube, rubber strip bundle, foamed plastic rope/bundle, bipeltate rope/bundle, plastic coir rope or the plastic rope made of hemp.If be not limited to cost restriction, flexible core also can adopt steel wire rope or steel tendon.Described synthetic fibers are preferably nylon, polypropylene fibre, terylene, aramid fiber, polyethylene, polypropylene or synthetic plastic; Described inorfil is preferably glass fibre or ceramic fibre; Described rubber is preferably general purpose rubber, silicon rubber, butadiene-styrene rubber, butadiene rubber, isoprene rubber or ethylene-propylene rubber.
Flexible core is not limited to the above-mentioned concrete enforcement provided, as long as the material with pliability, support strength, moisture-resistant, resistant to thermal aging and resist chemical all can be used as flexible core of the present invention.
5, reprocessing.
The connector lug produced in employing trimmer finishing graphite compound earthing material braiding process and graphite come off, and for preventing graphite compound earthing material from damaging, shaping diameter rate should control more than 85%.
According to engineering design demand, choose graphite compound earthing material and the gold utensil joint of preseting length, buckle machine is adopted to be crimped with the graphite material of certain length by gold utensil joint, see Fig. 4, gold utensil joint should have stronger corrosion resistance, specifically can select to adopt anticorrosive paint or conducting resinl etc. to carry out antiseptic gold utensil joint.Graphite compound earthing material with to ensure between gold utensil joint to contact closely be connected firmly.
By embodiment, and by reference to the accompanying drawings, the present invention will be further illustrated below.
Embodiment 1
The present embodiment, flexible core is the rubber tube of external diameter 20mm, internal diameter 12mm.Adopt 48 first composite stone lines of ink marker to be evenly arranged in flexible core surrounding, between the upper and lower myrmekite layer of ink of the first composite stone ink ribbon of the twisting first composite stone line of ink marker, be laid with glass fibre.24 second composite stone lines of ink marker are adopted to obtain through double track interlacing the graphite compound earthing material that diameter is about 33mm.The Kafra fiber of 12 glass fibres and 1 600D model is laid with between the upper and lower myrmekite layer of ink of the second composite stone ink ribbon of the twisting second composite stone line of ink marker; Gained sub-thread second graphite recombination line graphite line tension force 15N.
Embodiment 2
In the present embodiment, flexible core is the nylon rope of diameter 20mm.Adopt 48 first composite stone lines of ink marker to be evenly arranged in flexible core surrounding, between the upper and lower myrmekite layer of ink of the first composite stone ink ribbon of the twisting first composite stone line of ink marker, be laid with 12 glass fibres and 1 nickel fiber.Adopt 24 second composite stone lines of ink marker through double track interlacing, obtain the graphite compound earthing material that diameter is about 33mm.The Kafra fiber of 12 glass fibres and 1 600D model is laid with between the upper and lower myrmekite layer of ink of the second composite stone ink ribbon of the twisting second composite stone line of ink marker; Gained sub-thread second graphite recombination line graphite line tension force 15N.
Embodiment 3
In the present embodiment, flexible core is the polyethylene/PE plastic ties of diameter 25mm.Adopt 56 first composite stone line of ink marker plates to be evenly arranged in flexible core surrounding, between the upper and lower myrmekite layer of ink of the first composite stone ink ribbon of the twisting first composite stone line of ink marker, be laid with 12 glass fibres and 1 nickel fiber.Adopt 24 second composite stone lines of ink marker through double track interlacing, obtain the graphite compound earthing material that diameter is about 40mm.The Kafra fiber of 12 glass fibres and 1 600D model is laid with between the upper and lower myrmekite layer of ink of the second composite stone ink ribbon of the twisting second composite stone line of ink marker; Gained sub-thread second composite stone line of ink marker graphite line tension force 15N.
Embodiment 4
In the present embodiment, flexible core is the polypropylene/PP plastic ties of diameter 25mm.Adopt 56 first composite stone lines of ink marker to be evenly arranged in flexible core surrounding, between the upper and lower myrmekite layer of ink of the first composite stone ink ribbon of the twisting first composite stone line of ink marker, be laid with 11 glass fibres and 2 copper fibers.Adopt 24 second composite stone lines of ink marker through double track interlacing, obtain the graphite compound earthing material that diameter is about 40mm.The Kafra fiber of 12 glass fibres and 1 600D model is laid with between the upper and lower myrmekite layer of ink of the second composite stone ink ribbon of the twisting second composite stone line of ink marker; Gained sub-thread second composite stone line of ink marker graphite line tension force 15N.
The graphite compound earthing material of embodiment 1 ~ 4 is buried underground by digging in-situ ground connection ditch, simulate actual transmission line tower grounding network, in soil resistivity 55 Ω m area, small-sized tower grounding net is set, ground network is 3 × 3m square and 4 corner levels, 45 ° of direction extensions 3 meters, the overall depth of burying is about 0.6m, power frequency grounding resistance value about 1.87 Ω is (along with the prolongation of the depth of burying and earth mat perimetric length, grounding resistance can reduce further), reach soil resistivity in power industry " overvoltage protection of DL/T 620-1997 alternating-current electric device and insulation coordination " and be less than the standard-required that 100 Ω m area pole tower ground resistances are less than 10 Ω.
The graphite compound earthing material resistivity that embodiment 1 ~ 4 is made all is less than 2.1 × 10
-5Ω m; By " GB/T 21698-2008 bonded earth electrode technical conditions ", impulse current resistance test is carried out to embodiment 1 ~ 4 graphite compound earthing material, more than impulse current amplitude 200kA during test, the structure of graphite material and outward appearance are all unchanged, resistivity is floated within 2%, is applicable to power system transmission line tower grounding engineering and other ground connection occasions.
Graphite compound earthing material of the present invention has good conductivity, corrosion resistance, flexible, low kelvin effect, high with the conjugation of soil, conveniently to transport and site operation, the advantages such as safe antitheft, are applicable to the occasion that transformer station, electric power line pole tower and building etc. need electrical grounding.
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature of disclosing in this manual or any combination newly, and the step of the arbitrary new method disclosed or process or any combination newly.
Claims (10)
1. low kelvin effect graphite compound earthing material, is characterized in that:
For rope form or twisted wire shape, comprise the outermost layer composite stone line of ink marker braid wrapped up outside the secondary outer composite stone line of ink marker layer and secondary outer composite stone line of ink marker layer that wrap up outside flexible core, flexible core, wherein:
Flexible core is Sythetic fiber rope/bundle, inorfil rope/bundle, rubber tube, rubber strip bundle, foamed plastic rope/bundle, bipeltate rope/bundle, plastic coir rope or the plastic rope made of hemp;
Secondary outer composite stone line of ink marker layer is made up of the first composite stone line of ink marker of longitudinal arrangement outside flexible core, the first composite stone line of ink marker is obtained by the first composite stone ink ribbon twisting, and the first described composite stone ink ribbon comprises upper and lower myrmekite layer of ink and the fibrous skeleton between upper and lower myrmekite layer of ink;
Outermost layer composite stone line of ink marker braid is woven by the second composite stone line of ink marker and obtains, the second composite stone line of ink marker is obtained by the second composite stone ink ribbon twisting, and the second described composite stone ink ribbon comprises upper and lower myrmekite layer of ink and the fibrous skeleton between upper and lower myrmekite layer of ink.
2. low kelvin effect graphite compound earthing material as claimed in claim 1, is characterized in that:
The first described composite stone ink ribbon and the fibrous skeleton between upper and lower myrmekite layer of ink of the second composite stone ink ribbon are one or more in organic fiber, inorfil and metallic fiber.
3. low kelvin effect graphite compound earthing material as claimed in claim 1, is characterized in that:
The fibrous skeleton between upper and lower myrmekite layer of ink of the first described composite stone ink ribbon at least comprises conductive fiber.
4. low kelvin effect graphite compound earthing material as claimed in claim 1, is characterized in that:
The fibrous skeleton between upper and lower myrmekite layer of ink of the second described composite stone ink ribbon at least comprises toughened fiber.
5. low kelvin effect graphite compound earthing material as claimed in claim 1, is characterized in that:
The first described composite stone ink ribbon and the fibrous skeleton outer surface between upper and lower myrmekite layer of ink of the second composite stone ink ribbon are coated with adhesive phase.
6. the preparation method of low kelvin effect graphite compound earthing material, is characterized in that, comprise step:
Step 1, roll-in is carried out to worm graphite and makes worm graphite paper, fibrous skeleton of arranging between two-layer worm graphite paper obtains the first composite graphite paper and the second composite graphite paper, first composite graphite paper is identical with the fibrous skeleton that the second composite graphite paper bag is drawn together or not identical, carry out roll-in to the first composite graphite paper and the second composite graphite paper, along fibrous skeleton, longitudinally cutting the first composite graphite paper and the second composite graphite paper obtain the first composite stone ink ribbon and the second composite stone ink ribbon;
Step 2, carries out twisting to the first composite stone ink ribbon and the second composite graphite band respectively and obtains the sub-thread first composite stone line of ink marker and the sub-thread second composite stone line of ink marker;
Step 3, adopt braiding machine to be longitudinally wrapped in by the sub-thread first composite stone line of ink marker outside flexible core and obtain at least one level outer composite stone line of ink marker layer, meanwhile, the sub-thread second composite stone line of ink marker is knitted to outside time outer composite stone line of ink marker layer and obtains at least one deck outermost layer composite stone line of ink marker braid;
Described flexible core is Sythetic fiber rope/bundle, inorfil rope/bundle, rubber tube, rubber strip bundle, foamed plastic rope/bundle, bipeltate rope/bundle, plastic coir rope or the plastic rope made of hemp.
7. the preparation method of low kelvin effect graphite compound earthing material as claimed in claim 6, is characterized in that:
Fibrous skeleton of arranging between two-layer worm graphite paper described in step 1 obtains the first composite graphite paper and the second composite graphite paper, and described fibrous skeleton is the fibrous skeleton of dipped adhesive.
8. the preparation method of low kelvin effect graphite compound earthing material as claimed in claim 6, is characterized in that:
In step 3, adopt single track braiding, double track braiding or many rails weaving manner to be knitted to by the sub-thread second composite stone line of ink marker outside time outer composite stone line of ink marker layer and obtain outermost layer composite stone line of ink marker braid.
9. the preparation method of low kelvin effect graphite compound earthing material as claimed in claim 6, is characterized in that:
In step 3, adopt cover volume mode to be knitted to by the sub-thread second composite stone line of ink marker outside time outer composite stone line of ink marker layer and obtain multilayer outermost layer composite stone line of ink marker braid.
10. the preparation method of low kelvin effect graphite compound earthing material as claimed in claim 6, is characterized in that:
Adopt circular winding displacement plate to carry out assisting knitting in step 3, described circular winding displacement plate offers flexible core entrance hole, around flexible core entrance hole, offer at least one deck first composite stone line of ink marker entrance hole; Before braiding, the flexible core entrance hole of flexible core from winding displacement plate is passed, the first composite stone line of ink marker entrance hole of the sub-thread first composite stone line of ink marker from winding displacement plate is passed.
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| CN104269206A (en) * | 2014-10-27 | 2015-01-07 | 武汉大学 | Low-specific resistance graphite thread and preparation method thereof |
| CN104269664B (en) * | 2014-10-27 | 2016-06-08 | 武汉大学 | A kind of low temperature rise compound ground connector and its preparation method |
| CN104269203A (en) * | 2014-10-27 | 2015-01-07 | 武汉大学 | Metal fiber core low-resistance graphite yarn and preparation method thereof |
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| CN106229703A (en) * | 2016-08-22 | 2016-12-14 | 国家电网公司 | Graphite bonded earth electrode and the preparation method of impulse earthed resistance can be reduced |
| CN107069249B (en) * | 2016-12-09 | 2020-04-14 | 西峡县金方圆密封材料有限责任公司 | Carbon fiber graphite flexible grounding film and preparation method thereof |
| CN109066262B (en) * | 2018-06-25 | 2019-12-13 | 大连格林艾克创新科技有限公司长垣县分公司研发生产基地 | preparation method of graphene modified flexible non-metal conductive grounding body |
| CN109411139B (en) * | 2018-10-31 | 2019-10-25 | 湖南湘江电缆有限公司 | A kind of antifatigue long-life wind-powered electricity generation cable of anti-torsion and preparation method thereof |
| CN109888519A (en) * | 2019-03-14 | 2019-06-14 | 四川健坤科技有限公司 | A kind of graphite grounding body and processing technology conducive to conduction |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1805066A (en) * | 2006-01-24 | 2006-07-19 | 袁大铭 | Anti-interference nonmetal cable and its manufacturing method |
| CN202159779U (en) * | 2011-07-11 | 2012-03-07 | 刘建华 | Lightning protection grounding electrode body |
| CN102800382A (en) * | 2012-08-24 | 2012-11-28 | 潍坊市宏宇电力设备防护有限公司 | Graphite wire, production process for graphite wire and production equipment for graphite wire |
| CN202695740U (en) * | 2012-07-29 | 2013-01-23 | 保定中良电力科技有限公司 | Lightning protection grounding body |
| CN203205551U (en) * | 2013-04-22 | 2013-09-18 | 潍坊市宏宇电力设备防护有限公司 | Lightning protective grounding body |
| CN203521648U (en) * | 2013-10-23 | 2014-04-02 | 阮江军 | Low skin effect graphite composite grounded material |
-
2013
- 2013-10-23 CN CN201310501286.7A patent/CN103500595B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1805066A (en) * | 2006-01-24 | 2006-07-19 | 袁大铭 | Anti-interference nonmetal cable and its manufacturing method |
| CN202159779U (en) * | 2011-07-11 | 2012-03-07 | 刘建华 | Lightning protection grounding electrode body |
| CN202695740U (en) * | 2012-07-29 | 2013-01-23 | 保定中良电力科技有限公司 | Lightning protection grounding body |
| CN102800382A (en) * | 2012-08-24 | 2012-11-28 | 潍坊市宏宇电力设备防护有限公司 | Graphite wire, production process for graphite wire and production equipment for graphite wire |
| CN203205551U (en) * | 2013-04-22 | 2013-09-18 | 潍坊市宏宇电力设备防护有限公司 | Lightning protective grounding body |
| CN203521648U (en) * | 2013-10-23 | 2014-04-02 | 阮江军 | Low skin effect graphite composite grounded material |
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