CN104616814A - Metal wire woven graphene composite shielding low-load DC (direct current) high-voltage flexible cable - Google Patents
Metal wire woven graphene composite shielding low-load DC (direct current) high-voltage flexible cable Download PDFInfo
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- CN104616814A CN104616814A CN201510048729.0A CN201510048729A CN104616814A CN 104616814 A CN104616814 A CN 104616814A CN 201510048729 A CN201510048729 A CN 201510048729A CN 104616814 A CN104616814 A CN 104616814A
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Abstract
The invention relates to the technical field of cables, particularly to a metal wire woven graphene composite shielding low-load DC high-voltage flexible cable. The metal wire woven graphene composite shielding low-load DC high-voltage shielding flexible cable comprises a conductor and an insulating layer press-wrapping the conductor; the conductor and the insulating layer compose an insulating cable core; a layer of polyester film is wound outside the insulating cable core in a stacked mode, a layer of graphene conducting tapes are wound outside the polyester film, a layer of metal wire woven shielding layer is arranged outside the graphene conducting tapes, and a layer of environment-friendly outer sheath press-wraps the metal wire woven shielding layer; the inside of the polyester film is filled with environment-friendly flexible fillings. The metal wire woven graphene composite shielding low-load DC high-voltage flexible cable has the advantages of being high in shielding effects and anti-interference performance, safe in operation and flexible and can work safely and reliably under high-voltage.
Description
Technical field
The present invention relates to a kind of cable, particularly relate to a kind of metal wire knitted Graphene composite shielding low load DC high voltage flexible cable.
Background technology
In electric wire, be mainly used in requiring jamming-proof various electrical equipment, instrument, telecommunications, computer, network dispatch control system with metal layer shields cable, the connection of power equipment and automation equipment, if mobile occasion mainly adopts metal wire knitted to shield, the cable as metal wire knitted shielding defines metal wire knitted density (be generally and be not less than 80%).
And for low load high-voltage direct-current flexible cable, 1, must ensure that cable has extraordinary pliability in mobile device use procedure, just require multiply fine wire not only will be adopted stranded except conductor at this, insulation thickness is also quite thin.2, under low load high voltage except conductor flexible insulation is thin, also to ensure whether the pliability of cable shield and cable shielding layer earthing facilitate.
Current cable prior art major defect and deficiency have:
1, existing cable insulation thickness is thicker under high voltages, such as: at present in rated voltage 500KV and following direct current transportation extrusion insulating power cable System Technical Specification, 80KV direct current overland cable, insulation recommends nominal thickness to be 9.0mm, and this just can not meet softness requirements.
2, can produce electrostatic interference under capacity coupled effect between core under high voltages, electrical current can give birth to electromagnetic induction interference.The flexibility of current low load high-voltage direct-current cable and shielding can not be simultaneously all standby, and existing metallic shield divides two kinds of i.e. metal wire knitted shielding and the shieldings of all-metal band.If only adopt metal wire knitted shielding, advantage is that metal wire knitted shielding is soft for more convenient in ground connection in mobile occasion and system; Shortcoming is that metal wire knitted shielding has woven gap shield effectiveness not to be very desirable, because metal wire knitted is one deck network structure, there is very many non-woven gap, have impact on shielding factor and shield effectiveness, when count is less, affect also larger.Although if adopt metallic tape shield shield effectiveness relatively good, the resist bending ability of metallic tape shield can not be suitable for bending some occasions frequently, and metallic tape shield ground connection is inconvenient in addition.So metal wire knitted shielding pliability reaches requirement but shielding properties is undesirable, but the effective pliability of metallic tape shield does not reach requirement.
So should ensure cable thinwalled insulation, good shield effectiveness under high voltages, ensure that cable moving makes the pliability made good use of again, the materials and process process difficult that current product uses realizes.
3, the phenomenons such as wire fracture of wire can not be stopped completely in metal wire knitted production process, make metal wire knitted fracture of wire place burr easily puncture cable insulation, occur that cable punctures when carrying out withstand voltage test or breaks down in using.Shielding at the outer single wrapped polyester belt of cable core before braiding in metal wire knitted of current employing, polyester belt is also easily punctured by wire, affects insulation property, and effect is not ideal enough.
Summary of the invention
The present invention is intended to address the aforementioned drawbacks, and provides a kind of metal wire knitted Graphene composite shielding low load DC high voltage flexible cable.
In order to overcome the defect existed in background technology, the technical solution adopted for the present invention to solve the technical problems is: this metal wire knitted Graphene composite shielding low load DC high voltage flexible cable comprises conductor and is extruded in the insulating barrier outside conductor, conductor and insulating barrier are combined into insulated wire cores, the outer overlap of insulated wire cores is surrounded with one deck polyester film, the outer wrapped one deck graphene conductive band of polyester film, one metal wire layer woven shield is provided with outside graphene conductive band, one deck environmental protection oversheath is extruded with outside metal wire knitted screen, be provided with environmental protection flexible in described polyester film to fill.
According to another embodiment of the invention, the core number comprising described insulated wire cores is further 2-16 core.
According to another embodiment of the invention, comprising described insulated wire cores area of section is further 0.5-6 mm
2.
According to another embodiment of the invention, comprise the filament that described conductor is 0.16-0.31mm by 6-189 root diameter further and be twisted into circle by strand winder, the diameter being twisted into the conductor after circle is 0.89-3.6mm.
According to another embodiment of the invention, comprise described insulating barrier further and adopt high pressure resistant ultra-clean direct current polyolefin insulation material.
According to another embodiment of the invention, the thickness comprising described insulating barrier is further 2-2.5mm.
According to another embodiment of the invention, the thickness comprising described polyester film is further 0.02-0.08mm.
According to another embodiment of the invention, the thickness comprising described graphene conductive band is further 0.02-0.15mm.
According to another embodiment of the invention, the filament diameter comprising described metal wire knitted screen is further 0.15-0.3mm.
According to another embodiment of the invention, the thickness comprising described environmental protection oversheath is further 1.0-2.2mm.
The invention has the beneficial effects as follows: this metal wire knitted Graphene composite shielding low load DC high voltage flexible cable has that shield effectiveness is good, strong interference immunity, security of operation and the feature of softness, the Graphene composite shielding DC high voltage flexible cable (Cable Bending Radius 6D) of reliable in quality.1, because of cable working voltage very high (60-80KV) and require soft, this cable thinwalled insulation adopts the very high ultra-clean polyolefin direct current cables material of insulation resistance, 2, for reaching shield effectiveness and pliability is good simultaneously, cable adopts the graphene conductive band of independent research and metal wire knitted to combine shielding, utilize graphene conductive band strength high, soft, the feature that shielding properties is superior can effectively shield electromagnetic reflection, effectively prevent external electromagnetic interference from entering cable, also stop internal electromagnetic radiation to be gone out simultaneously, do not disturb the work of other equipment, this cable shield performance effectively improves, if cable core short circuit, then Leakage Current can pass through the sensible ground network of associating screen, play safeguard protection effect, ground protection effect is more superior, 3, the outer of this cable protects employing environment-friendlysheath sheath material.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of this practicality another embodiment new;
Fig. 3 is the structural representation of this practicality another embodiment new;
Wherein: 1, conductor, 2, insulating barrier, 3, environmental protection flexible fills, 4, polyester film, 5, graphene conductive band, 6, metal wire knitted screen, 7, environmental protection oversheath.
Embodiment
This metal wire knitted Graphene composite shielding low load DC high voltage flexible cable is applicable in the flow directing device of electrostatic spraying and other low load high pressure, main as power supply lead wire, the insulating barrier 2 comprising conductor 1 and be extruded in outside conductor 1, conductor 1 and insulating barrier 2 are combined into insulated wire cores, the outer overlap of insulated wire cores is surrounded with one deck polyester film 4, the outer wrapped one deck graphene conductive band 5 of polyester film 4, one metal wire layer woven shield 6 is provided with outside graphene conductive band 5, one deck environmental protection oversheath 7 is extruded with outside metal wire knitted screen 6, be provided with environmental protection flexible in polyester film 4 and fill 3, fill environmental protection flexible and fill the rounding property that 3 are guarantee cable.
The ultra-clean polyolefin direct current cables material that insulating barrier 2 adopts insulation resistance very high, and complete under specific technique.Screen adopts graphene conductive band 5 to combine shielding with metal wire knitted, by two materials be combined in high voltage and mobile occasion under can ensure that the flexibility of cable can ensure again the shielding properties that cable is higher.Compensate for the defect of single metal wire knitted shielding, can avoid because metal wire knitted exists the impact on shield effectiveness that gap causes, the shield effectiveness improving cable further, utilize the feature that graphene conductive band strength is high, soft, shielding properties is superior simultaneously, not only increase cable cable core protection intensity before braiding, preventing shielded metal silk from weaving affects insulating performance of cable because fracture of wire penetrates cable core.Also utilize Graphene peculiar in electromagnetic reflection-absorption performance simultaneously, can effectively prevent external electromagnetic interference from entering cable, stop internal electromagnetic radiation to be gone out, do not disturb the work of other equipment.By metal wire knitted screen 6 and graphene conductive band 5 combine shielding reach the flexibility of cable under cable high voltage and excellent shielding properties simultaneously all standby, ground protection effect is also more superior.
Below just by reference to the accompanying drawings and chart be described in detail:
In chart the length of external diameter refer to each stacked add after overall diameter, such as: cable core is made up of conductor 1 outsourcing insulation 2, the 0.9mm of the diameter of conductor 1, the thickness of insulating barrier 2 is 2mm, and last overall diameter is 4.9mm.
Example one
As shown in Figure 1, in figure, the core number of insulated wire cores is 2 cores
,the area of section of insulated wire cores is 0.5 mm
2.Conductor 1 is many flexible conductor lay configuration.The copper filament that conductor 1 is 0.20mm by 15 single diameters forms, and is twisted into round by strand winder, and the stranded rear diameter of conductor 1 is 0.89mm.Insulating barrier 2 adopts high pressure resistant ultra-clean direct current polyolefin insulation material, and this material is extruded on conductor 1 by plastic extruding machine, and the processing temperature of plastic extruding machine is 180 DEG C ~ 200 DEG C, and extruding thickness is 2.0mm, and after extruded insulation layer 2, external diameter is 4.9mm.
Cable core is twisted into by cabler by 2 insulated wire cores after high pressure resistant ultra-clean direct current polyolefin extruded insulation, laying up pitch is 157, the stranded diameter of cable core is 9.8 mm, wrapped two strata ester films 4 while twisted cable core, the thickness of polyester film 4 is 0.04mm, the outer wrapped one deck graphene conductive band 5 simultaneously of polyester film 4, the thickness of graphene conductive band 5 is 0.02mm.In cable core, place 2 diameters is that 5.0mm environmental protection fills 3, and then wrapped graphene conductive band 5, wrapped rear external diameter is 10.0mm.
The cable core of wrapped graphene conductive band 5 is with metal wire knitted screen 6 on braiding machine, and the filament diameter of metal wire knitted screen 6 is 0.15mm, and after braiding, external diameter is 10.6mm, and count is 80%.
Environmental protection oversheath 7 is environment-friendly PVC material, is extruded on metal wire knitted screen 6 by plastic extruding machine, and the processing temperature of plastic extruding machine is 160 DEG C ~ 180 DEG C, and the thickness of environmental protection oversheath 7 is 1.0mm, and the diameter finally forming cable is 12.6mm.
Cable product inspection:
Insulation, jacket structure inspection: insulation average thickness is 2.0mm, and sheath average thickness is this this cable needs of data fit of 1.0mm.
Conductor DC resistance test when 20 DEG C: when surveying 20 DEG C, conductor DC resistance is 38.9 Ω/Km, meets the regulation of GB/T3956-2008.
Outer jacket sparking test: meet the regulation in GB/T3048.9-94.
DC test: DC test, when 100 kV, continues 15 min insulation and do not puncture.
The bending property of cable: cable is bend test under 6 times of diameters, stable performance normal operation.
By above example, this meets the requirements through each performance of inspection cable.
Example two
As shown in Figure 2, in figure, the core number of insulated wire cores is 4 cores
,the area of section of insulated wire cores is 1.5 mm
2.Conductor 1 is many flexible conductor lay configuration, and the copper filament that conductor 1 is 0.25mm by 27 single diameters forms, and is twisted into round by strand winder, and the stranded diameter of conductor 1 is 1.5mm.Insulating barrier 2 adopts high pressure resistant ultra-clean direct current polyolefin insulation material, and this material is extruded on conductor 1 by plastic extruding machine, and the processing temperature of plastic extruding machine is 180 DEG C ~ 200 DEG C, and extruding thickness is 2.0mm, and after extruded insulation layer 2, external diameter is 5.5mm.
Cable core is twisted into by cabler by 4 insulated wire cores after high pressure resistant ultra-clean direct current polyolefin extruded insulation, laying up pitch is 213, the stranded external diameter of cable core is 13.3mm, wrapped two strata ester films 4 while twisted cable core, the thickness of polyester film 4 is 0.04mm, at the outer wrapped one deck graphene conductive band 5 simultaneously of polyester film 4, the thickness of graphene conductive band 5 is 0.15mm.In cable core, place 5 diameters is that 6.0mm environmental protection flexible fills 3, and then after wrapped graphene conductive band 5, external diameter is 14.0mm.
The cable core of wrapped graphene conductive band 5 is with metal wire knitted screen 6 on braiding machine, and the filament diameter of metal wire knitted screen 6 is 0.20mm, and after braiding, external diameter is 14.8mm, and count is 80%.
Environmental protection sheath 7 is environment-friendly PVC material, is extruded on metal wire knitted screen 6 by plastic extruding machine, and the processing temperature of plastic extruding machine is 160 DEG C ~ 180 DEG C, and the thickness of environmental protection sheath 7 is 1.0mm, and the diameter finally obtaining cable is 16.8mm.
Cable product inspection:
Insulation, jacket structure inspection: insulating barrier average thickness is 2.0mm, and environmental protection sheath average thickness is this this cable needs of data fit of 1.0mm.
Conductor DC resistance test when 20 DEG C: when surveying 20 DEG C, conductor DC resistance is 13.1 Ω/Km, meets the regulation of GB/T3956-2008.
Outer jacket sparking test: meet the regulation in GB/T3048.9-94.
DC test: DC test, when 100 kV, continues 15 min insulation and do not puncture.
The bending property of cable: cable is bend test under 6 times of diameters, stable performance normal operation.
By above example, this meets the requirements through each performance of inspection cable.
Example three
As shown in Figure 3, in figure, the core number of insulated wire cores is 16 cores
,the area of section of insulated wire cores is 6 mm
2.Conductor 1 is many flexible conductor lay configuration, and the copper filament that conductor 1 is 0.20mm by 189 single diameters forms, and is twisted into round by strand winder, and the diameter after conductor 1 is stranded is 3.6mm.Insulating barrier 2 adopts high pressure resistant ultra-clean direct current polyolefin insulation material, and this material is extruded on conductor 1 by plastic extruding machine, and the processing temperature of plastic extruding machine is 180 DEG C ~ 200 DEG C, and extruding thickness is 2.5mm, and the external diameter after extruded insulation layer 2 is 8.6mm.
Cable core is twisted into by cabler by 16 insulated wire cores after high pressure resistant ultra-clean direct current polyolefin extruded insulation, laying up pitch is 646mm, the stranded external diameter of cable core is 40.4mm, wrapped two strata ester films 4 while twisted cable core, the thickness of polyester film 4 is 0.08mm, the outer wrapped one deck graphene conductive band 5 simultaneously of polyester film 4, the thickness of graphene conductive band 5 is 0.15mm.In cable core, place the environmental protection flexible filling 3 that 17 diameters are 9.0mm, the external diameter then after wrapped graphene conductive band 5 is 41.2mm.
The cable core of wrapped graphene conductive band 5 is with metal wire knitted screen 6 on braiding machine, and the filament diameter of metal wire knitted screen 6 is 0.30mm, and after braiding, diameter is 42.4mm, and count is 80%.
Environmental protection oversheath 7 is environment-friendly PVC material, is extruded on metal wire knitted screen 6 by plastic extruding machine, and the processing temperature of plastic extruding machine is 160 DEG C ~ 180 DEG C, and the thickness of environmental protection oversheath 7 is 2.2mm, and the outside diameter of cable finally obtained is 46.8mm.
Cable product inspection:
Insulation, jacket structure inspection: insulating barrier average thickness is 2.5mm, and environmental protection oversheath average thickness is 2.2mm, this this cable needs of data fit.
Conductor DC resistance test when 20 DEG C: when surveying 20 DEG C, conductor DC resistance is 3.28 Ω/Km, meets the regulation of GB/T3956-2008.
Outer jacket sparking test: meet the regulation in GB/T3048.9-94.
DC test: DC test, when 100 kV, continues 15 min insulation and do not puncture.
The bending property of cable: cable is bend test under 6 times of diameters, stable performance normal operation.
By above example, this meets the requirements through each performance of inspection cable.
By the graphene conductive band adopted, there is very good electric property and mechanical strength; graphene conductive band has good conductivity, very high intensity and toughness; there is shielding gap except metal wire knitted can be avoided, improve the shield effectiveness only having metal wire knitted shielded type cable; prevent from, outside electromagnetic interference, also protecting cable core to insulate because metal wire knitted not easily punctures film.Screen adopts graphene conductive band and metal wire knitted composite shielding.Graphene conductive band strength is high, soft, and shielding properties is superior can be made up single metal wire knitted with metal wire knitted composite shielding and shield or the defect of single metallic tape shield.
Claims (10)
1. a metal wire knitted Graphene composite shielding low load DC high voltage flexible cable, it is characterized in that: comprise conductor (1) and be extruded in conductor (1) insulating barrier outward (2), conductor (1) and insulating barrier (2) are combined into insulated wire cores, the outer overlap of insulated wire cores is surrounded with one deck polyester film (4), polyester film (4) is wrapped one deck graphene conductive band (5) outward, one metal wire layer woven shield (6) is provided with outside graphene conductive band (5), one deck environmental protection oversheath (7) is extruded with outside metal wire knitted screen (6), be provided with environmental protection flexible in described polyester film (4) and fill (3).
2. metal wire knitted Graphene composite shielding low load DC high voltage flexible cable as claimed in claim 1, is characterized in that: the core number of described insulated wire cores is 2-16 core.
3. metal wire knitted Graphene composite shielding low load DC high voltage flexible cable as claimed in claim 1, is characterized in that: described insulated wire cores area of section is 0.5-6 mm
2.
4. metal wire knitted Graphene composite shielding low load DC high voltage flexible cable as claimed in claim 1, it is characterized in that: the filament that described conductor (1) is 0.16-0.31mm by 6-189 root diameter is twisted into circle by strand winder, the diameter being twisted into the conductor after circle (1) is 0.89-3.6mm.
5. metal wire knitted Graphene composite shielding low load DC high voltage flexible cable as claimed in claim 1, is characterized in that: described insulating barrier (2) adopts high pressure resistant ultra-clean direct current polyolefin insulation material.
6. metal wire knitted Graphene composite shielding low load DC high voltage flexible cable as claimed in claim 1, is characterized in that: the thickness of described insulating barrier (2) is 2-2.5mm.
7. metal wire knitted Graphene composite shielding low load DC high voltage flexible cable as claimed in claim 1, is characterized in that: the thickness of described polyester film (4) is 0.02-0.08mm.
8. metal wire knitted Graphene composite shielding low load DC high voltage flexible cable as claimed in claim 1, is characterized in that: the thickness of described graphene conductive band (5) is 0.02-0.15mm.
9. metal wire knitted Graphene composite shielding low load DC high voltage flexible cable as claimed in claim 1, is characterized in that: the filament diameter of described metal wire knitted screen (6) is 0.15-0.3mm.
10. metal wire knitted Graphene composite shielding low load DC high voltage flexible cable as claimed in claim 1, is characterized in that: the thickness of described environmental protection oversheath (7) is 1.0-2.2mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510048729.0A CN104616814A (en) | 2015-01-30 | 2015-01-30 | Metal wire woven graphene composite shielding low-load DC (direct current) high-voltage flexible cable |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510048729.0A CN104616814A (en) | 2015-01-30 | 2015-01-30 | Metal wire woven graphene composite shielding low-load DC (direct current) high-voltage flexible cable |
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| CN201510048729.0A Pending CN104616814A (en) | 2015-01-30 | 2015-01-30 | Metal wire woven graphene composite shielding low-load DC (direct current) high-voltage flexible cable |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106876010A (en) * | 2017-02-22 | 2017-06-20 | 江苏通鼎光电科技有限公司 | A kind of braid shielded answering machine data transmission cable |
| CN108604842A (en) * | 2016-02-11 | 2018-09-28 | 西门子股份公司 | For power-weight ratio improve motor electric conductor and for the electrical components of the motor |
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Application publication date: 20150513 |