CN204189470U - A kind of metal fiber core low-resistance graphite line - Google Patents
A kind of metal fiber core low-resistance graphite line Download PDFInfo
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- CN204189470U CN204189470U CN201420625076.9U CN201420625076U CN204189470U CN 204189470 U CN204189470 U CN 204189470U CN 201420625076 U CN201420625076 U CN 201420625076U CN 204189470 U CN204189470 U CN 204189470U
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Abstract
The utility model discloses a kind of metal fiber core low-resistance graphite line, the composite graphite comprising metal fiber core and be wrapped in outside metal fiber core is outer, wherein, composite graphite skin adopts composite stone ink ribbon to carry out twisting around metal fiber core or braiding obtains, composite stone ink ribbon comprises two-layer myrmekite layer of ink and the inorfil be laid between two-layer graphite tape is formed, and is coated with adhesive phase outside inorfil.The utility model graphite line resistivity can significantly reduce, and conductivity significantly improves, and is conducive to preparing the good graphite compound earthing material of conductivity.
Description
Technical field
The utility model relates to a kind of electric power system earthing material, particularly relates to a kind of metal fiber core low-resistance graphite line.
Background technology
Transmission line is the element of electric power system, and lightning stroke trip accident is the main natural calamity fault that transmission line faces always frequently.Practical operating experiences shows, pole tower ground resistance is bigger than normal is the main cause causing circuit to strike back tripping operation, " lightning protection is ground connection ", low resistance, transmission line tower grounding network steady in a long-term are the important electric devices reducing transmission line lightning stroke accident, safeguard power equipment safety stable operation.
China's power system transmission line ground network adopts the metal species earthing materials such as band steel, stainless steel, copper usually, and containing the galvanized steel of electroplated metal layer, stainless steel Baogang, copper covered steel metallic ground material.Except transport and difficulty of construction is large, easily occur except steal phenomenon, the maximum bottleneck problem of metallic ground material is the corrosion of earthing material.Practical operating experiences shows, the corrosion of the earthing material such as galvanized steel, band steel is very fast, and namely the general 3-7 that runs heavy corrosion occurs.The corrosion resistance of copper is 3 ~ 4 times of steel, and too high material cost limits its main cause applied at transmission line tower grounding network.
For the etching problem of metal material transmission line tower grounding network, some non-metal grounding materials arise at the historic moment.As " the novel graphite compound earthing material " of patent No. ZL201320654859.5, propose a kind of graphite compound earthing material, can effectively avoid the problems such as the corrosion of metallic ground material.Graphite is as a kind of good conductor, and its conductive characteristic meets the requirement of general grounding characteristics, but for the ground network that distance is longer, earthing material self-resistance rate directly affects the effective grounding length of ground network.Therefore, the resistivity reducing graphite compound earthing material is as far as possible the effective measures reducing Resistance of Grounding Grids, extend its effective grounding length.
In addition, through actual tests, in the preparation of above-mentioned graphite compound earthing material, when metallic fiber is placed in graphite paper by employing roll-in mode, because graphite paper thickness is less, metallic fiber easily exposes graphite paper surface, destroys graphite tape integrality.In addition, with glass fibre or other fibers unlike, metallic fiber is very easily curling, makes to adopt roll-in mode to be compounded in graphite paper by metallic fiber larger for diameter and there is certain difficulty.
Utility model content
For the shortcoming that graphite line resistivity in existing graphite compound earthing material is higher, the utility model provides a kind of metal fiber core low-resistance graphite line.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of metal fiber core low-resistance graphite line, the composite graphite comprising metal fiber core and be wrapped in outside metal fiber core is outer, wherein, composite graphite skin adopts composite stone ink ribbon to carry out twisting around metal fiber core or braiding obtains, composite stone ink ribbon comprises two-layer myrmekite layer of ink and the inorfil be laid between two-layer graphite tape is formed, and is coated with adhesive phase outside inorfil.
Above-mentioned metal fiber core is the metallic fiber of no more than 3.
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.
Above-mentioned inorfil can be glass fibre, carbon fiber, boron fibre, kevlar fiber or ceramic fibre.
Above-mentioned metallic fiber can be copper fiber, stainless steel fibre or nickel fiber.
Compared to the prior art, the utility model tool has the following advantages and beneficial effect:
1, the utility model graphite line resistivity significantly reduces, compare with graphite line in existing graphite compound earthing material, the utility model graphite line resistivity can reduce a more than order of magnitude, and conductivity significantly improves, and is conducive to preparing the good graphite compound earthing material of conductivity.
2, preparation is simple, when using larger diameter metallic fiber, also there is not the problem that metallic fiber exposes graphite tape surface.
Accompanying drawing explanation
Fig. 1 is adhesive coating inorganic fiber schematic diagram;
Fig. 2 is two-way stranded metal fiber core graphite line schematic diagram;
Fig. 3 is unidirectional formula metal fiber core graphite line schematic diagram of twisting thread;
Wherein, 1-inorfil; 2-adhesive phase; 3-metal fiber core; The inorfil established in 4-composite stone ink ribbon; 5,6-composite stone ink ribbon; The two-way stranded metal fiber core graphite line of 7-; The unidirectional formula metal fiber core graphite line of twisting thread of 8-.
Embodiment
In concrete enforcement, main raw materials comprise carbon content higher than 85% high-purity worm graphite, ethyl acrylate water-soluble binder, glass fibre and metallic fiber, metallic fiber can be the low resistivity metal fibers such as copper fiber, stainless steel fibre, nickel fiber.
Carry out roll extrusion to worm graphite and make the smooth worm graphite paper without significant depressions of smooth surface, worm graphite paper thickness is advisable with 0.1 ~ 1mm.Adopt the inorfil anticorrosive, cost is low if glass fibre is as " fibrous skeleton " of composite stone ink ribbon.
Preparation method is as follows for composite stone ink ribbon: the glass fibre selecting diameter 0.08 ~ 0.2mm, adopt ethyl acrylate water-soluble binder by fiberglass skin homogeneous immersion, and be equidistantly laid between upper and lower two-layer worm graphite paper, glass fibre interval 0.5mm ~ 1.2mm; Keep 60 ~ 100s to carry out thermosetting process in 80 ~ 120 DEG C of temperature, obtain composite graphite paper through more than twice roll-in simultaneously.Cut the composite stone ink ribbon that composite graphite paper obtains width 10mm ~ 25mm, gained composite graphite belt surface is smooth, exposes graphite tape top layer without fiber.
Select anticorrosive good metallic fiber, as copper fiber, stainless steel fibre etc., metallic fiber diameter can select 1mm ~ 10mm, and quantity is advisable with less than 3.With single or many metallic fibers for core, outer adopt wall scroll composite stone ink ribbon to carry out twisting by unidirectional coiling to obtain composite graphite outer.In addition, also can select 2 composite stone ink ribbons, weave through reverse twisted wire at metal fiber core skin, obtain the metal fiber core graphite line that diameter is larger.The metal fiber core graphite line diameter of preparation is generally 1.8 ~ 4mm.
Several specific embodiments of the low-resistivity graphite line that the utility model provides are as follows:
Embodiment 1
Raw material comprise the copper fiber of the worm graphite of phosphorus content about 95%, the glass fibre of diameter 0.15mm, ethyl acrylate water-soluble binder and diameter 1.5mm.Roll-in mode is adopted to prepare worm graphite paper; See Fig. 1, adopt ethyl acrylate water-soluble binder by fiberglass skin homogeneous immersion, glass fibre is equidistantly laid between two-layer worm graphite paper, through thermosetting, roll-in, cut, obtain the composite stone ink ribbon of width 22mm, thickness 0.28mm, composite graphite belt surface is smooth exposed without fiber.
See Fig. 2, select 2 composite stone ink ribbons (5,6), 1 flat copper fiber (3), utilize stranded wire apparatus to prepare two-way stranded metal fiber core graphite line (7), its diameter is about 3.8mm.Adopt the two-way stranded metal fiber core graphite line resistance of four-electrode method microresistivity survey the present embodiment, length is two-way stranded metal fiber core graphite line resistance about 0.14 Ω of 1m, and length is composite graphite line resistance about 4.5 Ω of the not metal fiber of 1m.
Embodiment 2
Raw material comprise the copper fiber of the worm graphite of phosphorus content about 95%, the glass fibre of diameter 0.15mm, ethyl acrylate water-soluble binder and diameter 1mm.Roll-in mode is adopted to prepare worm graphite paper; See Fig. 1, adopt ethyl acrylate water-soluble binder by fiberglass skin homogeneous immersion, glass fibre is equidistantly laid between two-layer worm graphite paper, through thermosetting, roll-in, cut, obtain the composite stone ink ribbon of width 22mm, thickness 0.28mm, composite graphite belt surface is smooth exposed without fiber.
See Fig. 3, select 1 composite stone ink ribbon (9), 1 flat copper fiber (3), utilize twisting device to prepare unidirectional formula metal fiber core graphite line (8) of twisting thread, its diameter is about 2.2mm.Adopt the unidirectional formula metal fiber core graphite line resistance of twisting thread of four-electrode method microresistivity survey the present embodiment, length is unidirectional formula metal fiber core low-resistance graphite line resistance about 0.23 Ω that twists thread of 1m,, and length is composite graphite line resistance about 4.5 Ω of the not metal fiber of 1m.
Illustrate this patent described in above-described embodiment; though be described by specific term in literary composition; but the protection range of this patent can not be limited with this; the personage being familiar with this technical field can change it or revise and reach equivalent object after the spirit understanding this patent and principle; and this equivalence is changed and amendment, all should be covered by right and define in category.
Claims (2)
1. a metal fiber core low-resistance graphite line, is characterized in that:
The composite graphite comprising metal fiber core and be wrapped in outside metal fiber core is outer, wherein, composite graphite skin adopts composite stone ink ribbon to carry out twisting around metal fiber core or braiding obtains, composite stone ink ribbon comprises two-layer myrmekite layer of ink and the inorfil be laid between two-layer graphite tape is formed, and is coated with adhesive phase outside inorfil.
2. metal fiber core low-resistance graphite line as claimed in claim 1, is characterized in that:
Described metal fiber core is the metallic fiber of no more than 3.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420625076.9U CN204189470U (en) | 2014-10-27 | 2014-10-27 | A kind of metal fiber core low-resistance graphite line |
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| CN201420625076.9U CN204189470U (en) | 2014-10-27 | 2014-10-27 | A kind of metal fiber core low-resistance graphite line |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104269203A (en) * | 2014-10-27 | 2015-01-07 | 武汉大学 | Metal fiber core low-resistance graphite yarn and preparation method thereof |
| CN105826705A (en) * | 2016-05-18 | 2016-08-03 | 山东华安铁塔有限公司 | Anti-corrosion high-carbon flexible grounding body and preparation method |
| CN110197954A (en) * | 2019-06-13 | 2019-09-03 | 武汉昱仝科技有限公司 | A kind of soft graphite grounding body and its application |
| CN114737298A (en) * | 2022-03-31 | 2022-07-12 | 圣华盾防护科技股份有限公司 | High-barrier electromagnetic shielding protective clothing fabric and preparation method thereof |
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2014
- 2014-10-27 CN CN201420625076.9U patent/CN204189470U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104269203A (en) * | 2014-10-27 | 2015-01-07 | 武汉大学 | Metal fiber core low-resistance graphite yarn and preparation method thereof |
| CN105826705A (en) * | 2016-05-18 | 2016-08-03 | 山东华安铁塔有限公司 | Anti-corrosion high-carbon flexible grounding body and preparation method |
| CN105826705B (en) * | 2016-05-18 | 2018-09-25 | 山东华安铁塔有限公司 | A kind of anticorrosion high-carbon flexible ground body and preparation method |
| CN110197954A (en) * | 2019-06-13 | 2019-09-03 | 武汉昱仝科技有限公司 | A kind of soft graphite grounding body and its application |
| CN114737298A (en) * | 2022-03-31 | 2022-07-12 | 圣华盾防护科技股份有限公司 | High-barrier electromagnetic shielding protective clothing fabric and preparation method thereof |
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