CN217982879U - Wear-resistant and cracking-resistant medium-high voltage power cable - Google Patents
Wear-resistant and cracking-resistant medium-high voltage power cable Download PDFInfo
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- CN217982879U CN217982879U CN202222017246.2U CN202222017246U CN217982879U CN 217982879 U CN217982879 U CN 217982879U CN 202222017246 U CN202222017246 U CN 202222017246U CN 217982879 U CN217982879 U CN 217982879U
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- Prior art keywords
- layer
- density polyethylene
- voltage power
- high voltage
- power cable
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Links
- 238000005336 cracking Methods 0.000 title claims description 12
- 239000004020 conductor Substances 0.000 claims abstract description 32
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910000077 silane Inorganic materials 0.000 claims abstract description 28
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 27
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 27
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229920002943 EPDM rubber Polymers 0.000 claims abstract description 16
- 239000011889 copper foil Substances 0.000 claims abstract description 14
- 239000011248 coating agent Substances 0.000 claims abstract description 13
- 238000000576 coating method Methods 0.000 claims abstract description 13
- 239000005020 polyethylene terephthalate Substances 0.000 claims abstract description 11
- 239000004677 Nylon Substances 0.000 claims abstract description 10
- 229920001778 nylon Polymers 0.000 claims abstract description 10
- 238000009941 weaving Methods 0.000 claims abstract description 10
- 229920005989 resin Polymers 0.000 claims abstract description 9
- 239000011347 resin Substances 0.000 claims abstract description 9
- 229920001684 low density polyethylene Polymers 0.000 claims abstract description 8
- 239000004702 low-density polyethylene Substances 0.000 claims abstract description 8
- 230000007423 decrease Effects 0.000 claims abstract description 5
- 238000004132 cross linking Methods 0.000 claims abstract 6
- 239000010410 layer Substances 0.000 claims description 91
- 239000011241 protective layer Substances 0.000 claims description 12
- 238000004804 winding Methods 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 230000017105 transposition Effects 0.000 claims description 2
- 238000005299 abrasion Methods 0.000 claims 7
- 239000004760 aramid Substances 0.000 claims 2
- 229920003235 aromatic polyamide Polymers 0.000 claims 2
- 238000005253 cladding Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 5
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 8
- 239000005038 ethylene vinyl acetate Substances 0.000 description 8
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 8
- 229920000139 polyethylene terephthalate Polymers 0.000 description 8
- 238000005452 bending Methods 0.000 description 4
- 229920006231 aramid fiber Polymers 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 2
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 2
- 229920003020 cross-linked polyethylene Polymers 0.000 description 2
- 239000004703 cross-linked polyethylene Substances 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- -1 polyethylene terephthalate Polymers 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The utility model discloses a abrasionproof decreases fracture type medium and high voltage power cable, including the inner conductor, ethylene propylene diene monomer inner semi-conductive layer, silane grafting crosslinking low density polyethylene insulating layer, ethylene propylene diene monomer outer semi-conductive layer, shielding mesh conductor layer, the copper foil layer, the PET resin area is indulged and is wrapped the inoxidizing coating, the AFRP weaving layer, silane grafting crosslinking high density polyethylene inner sheath layer, the nylon anticorrosive coating, silane grafting crosslinking high density polyethylene oversheath layer and the wear-resisting inoxidizing coating of EVA, the inner conductor is that the soft copper wire hank of a plurality of footpaths is not less than 0.05mm and sticiss and form circular conductor structure, the wear-resisting inoxidizing coating thickness of EVA is no longer than 0.1mm. This cable has better pliability, stretch-proofing performance, prevents effectively that disconnected core broken string from taking place, can adapt to low temperature operating mode environment, prevents effectively that the restrictive coating wearing and tearing fracture from taking place, reduces and lays the construction degree of difficulty.
Description
Technical Field
The utility model relates to the technical field of cables, especially, relate to an abrasionproof decreases fracture type medium and high voltage power cable.
Background
Along with the continuous improvement of electric power high-voltage technology and the continuous acceleration of global urbanization process, the crosslinked polyethylene medium-high voltage power cable is popularized and applied by more and more power distribution systems due to the excellent characteristics of excellent performance, simple and easy manufacturing safety process and the like. Crosslinked polyethylene medium-high voltage power cables are laid indoors and outdoors, in tunnels and the like, need to be fixed on brackets, are laid in concrete pipes or cable ducts, are allowed to be directly buried in loose soil, and are widely adopted due to better electrical parameters and mechanical parameters than other types of power cable products. However, the lowest allowable bending radius of the cable is not generally specified in common cable products, construction conditions are not specified, the flexibility and tensile resistance of the common cable products are poor under outdoor low-temperature environment working conditions, the cable is subjected to deformation processes such as bending, stretching and the like in the laying and installation process, laying and wiring operations are difficult, construction difficulty is high, core breaking and wire breaking are easy to occur, even the sheath is seriously abraded, cracking and breakage are caused, and potential safety hazards are increased.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art not enough, the technical problem that solve provides an abrasionproof decreases fracture type medium and high voltage power cable, has better pliability, stretch-proofing performance, prevents effectively that disconnected core broken string from taking place, can adapt to low temperature operating mode environment, prevents effectively that the restrictive coating wearing and tearing fracture from taking place, reduces to lay the construction degree of difficulty.
The utility model discloses a make above-mentioned technical problem can solve through following technical scheme.
The wear-resistant and cracking-resistant medium-high voltage power cable comprises an inner conductor, an ethylene propylene diene monomer inner semi-conducting layer, a silane grafted cross-linked low-density polyethylene insulating layer, an ethylene propylene diene monomer outer semi-conducting layer, a shielding mesh conductor layer, a copper foil layer, a PET resin tape longitudinal wrapping protective layer, an AFRP woven layer, a silane grafted cross-linked high-density polyethylene inner sheath layer, a nylon anticorrosive layer, a silane grafted cross-linked high-density polyethylene outer sheath layer and an EVA wear-resistant protective layer, wherein the inner conductor is formed by twisting and pressing a plurality of soft copper wires with the wire diameter not less than 0.05mm into a round conductor structure, and the thickness of the EVA wear-resistant protective layer is not more than 0.1mm.
Preferably, the inner conductor has a diameter of 8mm to 50mm.
Preferably, the thickness of the silane grafted and crosslinked low-density polyethylene insulating layer is 3mm to 35mm.
Preferably, the thicknesses of the ethylene propylene diene monomer inner semi-conductive layer and the ethylene propylene diene monomer outer semi-conductive layer are both 0.5mm to 3mm.
Preferably, the silane grafted and crosslinked high-density polyethylene inner sheath layer, the nylon anticorrosive layer and the silane grafted and crosslinked high-density polyethylene outer sheath layer are bonded together into a whole through an EAA adhesive.
Preferably, the inner conductor lay length is 10 to 20 times the outer diameter of the inner conductor.
Preferably, the shielding mesh conductor layer is formed by mixing and spirally winding two tinned copper wires with different wire diameters and a wire diameter ratio of 0.9-1, the wire diameter of each tinned copper wire is 0.01-0.04 mm, and the shielding density is 92-95%.
Preferably, the copper foil layer is formed on the inner surface of the longitudinal covering protective layer of the PET resin tape through electroplating, and the thickness of the copper foil layer is 10-25 μm.
Preferably, the AFRP woven layer is formed by weaving an inner aramid fiber twisted wire and an outer aramid fiber twisted wire in a mutually reverse spiral winding manner, and the thickness of the AFRP woven layer is not less than 0.3mm.
Preferably, the thickness of the silane grafted and crosslinked high-density polyethylene inner sheath layer is 0.45mm to 1.2mm, and the thickness of the silane grafted and crosslinked high-density polyethylene outer sheath layer is 0.5mm to 6.5mm.
The utility model has the advantages that:
1. the silane-grafted crosslinked high-density polyethylene inner sheath layer, the silane-grafted crosslinked high-density polyethylene outer sheath layer and the nylon anticorrosive layer are integrated into a bonding structure, the interlayer peeling phenomenon is not easy to occur, the nylon anticorrosive layer is high in hardness, the silane-grafted crosslinked high-density polyethylene inner sheath layer and the silane-grafted crosslinked high-density polyethylene outer sheath layer are adopted, the static friction coefficient is small, the flexibility and the bending resistance of a cable are improved, the cable sheath cracking phenomenon under the low-temperature working condition environment is greatly reduced, the EVA wear-resistant protective layer is additionally arranged outside the silane-grafted crosslinked high-density polyethylene outer sheath layer, the optimized thickness is not more than 0.1mm, the wear resistance of the cable sheath is effectively improved, and the wear phenomenon of the outer sheath layer in laying construction is effectively prevented.
2. Through increasing the AFRP weaving layer, high strength has, the high modulus, reduce the moment of torsion power when crooked, the holistic tensile strength of cable has been improved greatly, reinforcing cable laying adaptability, reduce the cable laying degree of difficulty, add PET resin area and indulge a packet inoxidizing coating between AFRP weaving layer and copper foil layer, in laying the installation, when the cable withstands the bending, produce corresponding friction of sliding between inoxidizing coating and the AFRP weaving layer, be of value to the stress concentration who reduces the copper foil layer, thereby effectually prevent that the copper foil layer from producing chap, guarantee the electrical property of cable, durability is better.
Drawings
Fig. 1 is a schematic cross-sectional structure diagram of an embodiment of the present application.
In the figure: the cable comprises, by weight, 1-an inner conductor, 2-an ethylene propylene diene monomer inner semi-conducting layer, 3-a silane grafted and crosslinked low-density polyethylene insulating layer, 4-an ethylene propylene diene monomer outer semi-conducting layer, 5-a shielding mesh-shaped conductor layer, 6-a copper foil layer, 7-a PET (polyethylene terephthalate) resin tape longitudinal wrapping protective layer, 8-an AFRP (acrylonitrile-butadiene-styrene) woven layer, 9-a silane grafted and crosslinked high-density polyethylene inner sheath layer, 10-a nylon anticorrosive layer, 11-a silane grafted and crosslinked high-density polyethylene outer sheath layer and 12-an EVA (ethylene-vinyl acetate) wear-resistant protective layer.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
As shown in fig. 1, the utility model discloses high voltage power cable in abrasionproof decreases fracture type, including inner conductor 1, inner conductor 1 is the soft copper silk transposition of a plurality of line footpaths not less than 0.05mm and sticiss and form circular conductor structure, and is further, 1 lay length of inner conductor does 10 to 20 times of 1 external diameter of inner conductor. Specifically, the diameter of the inner conductor 1 is 8mm to 50mm.
The outer part of the inner conductor 1 is sequentially coated with an ethylene propylene diene monomer inner semi-conducting layer 2, a silane grafted crosslinked low-density polyethylene insulating layer 3, an ethylene propylene diene monomer outer semi-conducting layer 4, a shielding mesh-shaped conductor layer 5, a copper foil layer 6, a PET (polyethylene terephthalate) resin tape longitudinal coating protective layer 7, an AFRP (acrylonitrile butadiene styrene) woven layer 8, a silane grafted crosslinked high-density polyethylene inner sheath layer 9, a nylon anticorrosive layer 10, a silane grafted crosslinked high-density polyethylene outer sheath layer 11 and an EVA (ethylene-vinyl acetate) wear-resistant protective layer 12. The thicknesses of the ethylene propylene diene monomer inner semi-conductive layer 2 and the ethylene propylene diene monomer outer semi-conductive layer 4 are both 0.5mm to 3mm. The thickness of the silane grafted crosslinked low density polyethylene insulating layer 3 is 3mm to 35mm. The thickness of the EVA wear-resistant protective layer 12 is not more than 0.1mm. In one embodiment, the shielding mesh conductor layer 5 is formed by mixing and spirally winding two kinds of tinned copper wires with different wire diameters and a wire diameter ratio of 0.9-1, wherein the wire diameter of the tinned copper wire is 0.01-0.04 mm, and the shielding density is 92-95%. In one embodiment, the copper foil layer 6 is formed on the inner surface of the longitudinal covering protective layer 7 of the PET resin tape by electroplating, and the thickness of the copper foil layer 6 is 10-25 μm. The AFRP weaving layer 8 is formed by weaving inner and outer double-layer aramid fiber twisted threads in a mutually reverse spiral winding mode, and the thickness of the AFRP weaving layer 8 is not smaller than 0.3mm. In one embodiment, the silane-grafted crosslinked high density polyethylene inner sheath layer 9, the nylon corrosion protection layer 10 and the silane-grafted crosslinked high density polyethylene outer sheath layer 11 are bonded together by EAA adhesive. The thickness of the silane grafted and crosslinked high-density polyethylene inner sheath layer 9 is 0.45mm to 1.2mm, and the thickness of the silane grafted and crosslinked high-density polyethylene outer sheath layer 11 is 0.5mm to 6.5mm.
While the invention has been described with reference to exemplary embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the claims of the present application belong to the protection scope of the present invention.
Claims (10)
1. Abrasionproof decreases high voltage power cable in fracture type, characterized by: including inner conductor (1) and cladding in proper order in outer semi-conducting layer (2) in the ethylene propylene diene monomer rubber of inner conductor (1) outside, silane grafting cross-linking low density polyethylene insulating layer (3), ethylene propylene diene monomer rubber outer semi-conducting layer (4), shielding mesh conductor layer (5), copper foil layer (6), PET resin area indulge a packet inoxidizing coating (7), AFRP weaving layer (8), silane grafting cross-linking high density polyethylene inner sheath layer (9), nylon anticorrosive coating (10), silane grafting cross-linking high density polyethylene outer sheath layer (11) and EVA wear-resisting inoxidizing coating (12), inner conductor (1) is the soft copper wire transposition of a plurality of line footpaths not less than 0.05mm and sticiss and form circular conductor structure, EVA wear-resisting inoxidizing coating (12) thickness is no more than 0.1mm.
2. The abrasion and cracking resistant medium and high voltage power cable of claim 1, wherein: the diameter of the inner conductor (1) is 8mm to 50mm.
3. The abrasion and cracking resistant medium and high voltage power cable of claim 1, wherein: the thickness of the silane grafted crosslinked low-density polyethylene insulating layer (3) is 3mm to 35mm.
4. The medium and high voltage power cable of claim 1, wherein the cable further comprises: the thickness of the ethylene propylene diene monomer inner semi-conductive layer (2) and the thickness of the ethylene propylene diene monomer outer semi-conductive layer (4) are both 0.5mm to 3mm.
5. The abrasion and cracking resistant medium and high voltage power cable of claim 1, wherein: the silane grafted and crosslinked high-density polyethylene inner sheath layer (9), the nylon anticorrosive layer (10) and the silane grafted and crosslinked high-density polyethylene outer sheath layer (11) are bonded together into a whole through an EAA adhesive.
6. The abrasion and cracking resistant medium and high voltage power cable of claim 1, wherein: the lay length of the inner conductor (1) is 10 to 20 times of the outer diameter of the inner conductor (1).
7. The abrasion and cracking resistant medium and high voltage power cable of claim 1, wherein: the shielding mesh conductor layer (5) is formed by spirally winding two tinned copper wires with different wire diameters and a wire diameter ratio of 0.9-1 in a mixed mode, the wire diameter of each tinned copper wire is 0.01-0.04 mm, and the shielding density is 92-95%.
8. The medium and high voltage power cable of claim 1, wherein the cable further comprises: the inner surface of the PET resin tape longitudinal wrapping protective layer (7) is plated with the copper foil layer (6), and the thickness of the copper foil layer (6) is 10-25 micrometers.
9. The abrasion and cracking resistant medium and high voltage power cable of claim 1, wherein: the AFRP woven layer (8) is formed by weaving an inner aramid twisted wire layer and an outer aramid twisted wire layer in a mutually reverse spiral winding mode, and the thickness of the AFRP woven layer (8) is not less than 0.3mm.
10. The abrasion and cracking resistant medium and high voltage power cable of claim 1, wherein: the thickness of the silane grafted and crosslinked high-density polyethylene inner sheath layer (9) is 0.45mm to 1.2mm, and the thickness of the silane grafted and crosslinked high-density polyethylene outer sheath layer (11) is 0.5mm to 6.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222017246.2U CN217982879U (en) | 2022-08-02 | 2022-08-02 | Wear-resistant and cracking-resistant medium-high voltage power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222017246.2U CN217982879U (en) | 2022-08-02 | 2022-08-02 | Wear-resistant and cracking-resistant medium-high voltage power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217982879U true CN217982879U (en) | 2022-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222017246.2U Expired - Fee Related CN217982879U (en) | 2022-08-02 | 2022-08-02 | Wear-resistant and cracking-resistant medium-high voltage power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217982879U (en) |
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2022
- 2022-08-02 CN CN202222017246.2U patent/CN217982879U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20221206 |
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| CF01 | Termination of patent right due to non-payment of annual fee |