CN219738585U - Armoured high-voltage power cable for preventing biological invasion - Google Patents
Armoured high-voltage power cable for preventing biological invasion Download PDFInfo
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- CN219738585U CN219738585U CN202320648926.6U CN202320648926U CN219738585U CN 219738585 U CN219738585 U CN 219738585U CN 202320648926 U CN202320648926 U CN 202320648926U CN 219738585 U CN219738585 U CN 219738585U
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- layer
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- voltage power
- power cable
- coating
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- 230000009545 invasion Effects 0.000 title abstract description 6
- 239000010410 layer Substances 0.000 claims abstract description 93
- 239000002184 metal Substances 0.000 claims abstract description 43
- 229910052751 metal Inorganic materials 0.000 claims abstract description 43
- 239000004020 conductor Substances 0.000 claims abstract description 25
- 239000011248 coating agent Substances 0.000 claims abstract description 21
- 238000000576 coating method Methods 0.000 claims abstract description 21
- 229910001369 Brass Inorganic materials 0.000 claims abstract description 15
- 239000010951 brass Substances 0.000 claims abstract description 15
- -1 polypropylene Polymers 0.000 claims abstract description 15
- 239000004743 Polypropylene Substances 0.000 claims abstract description 13
- 239000011247 coating layer Substances 0.000 claims abstract description 13
- 229920000642 polymer Polymers 0.000 claims abstract description 13
- 229920001155 polypropylene Polymers 0.000 claims abstract description 13
- 239000011241 protective layer Substances 0.000 claims abstract description 12
- 239000000835 fiber Substances 0.000 claims abstract description 10
- 238000005187 foaming Methods 0.000 claims abstract description 10
- 239000010426 asphalt Substances 0.000 claims abstract description 7
- 238000004804 winding Methods 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229920003020 cross-linked polyethylene Polymers 0.000 claims description 3
- 239000004703 cross-linked polyethylene Substances 0.000 claims description 3
- 238000004049 embossing Methods 0.000 claims description 3
- 229920001903 high density polyethylene Polymers 0.000 claims description 3
- 239000004700 high-density polyethylene Substances 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000005452 bending Methods 0.000 description 3
- 239000013043 chemical agent Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241000256602 Isoptera Species 0.000 description 1
- 241000283984 Rodentia Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Abstract
The utility model relates to an armoured high-voltage power cable capable of preventing biological invasion, which sequentially comprises the following components from inside to outside: the shielding device comprises a conductor, a conductor shielding layer, an insulating shielding layer, a semiconductive buffer layer, a metal sheath layer, a sheath, a metal mothproof layer, an armor layer, a coating protection layer and an outer coating layer, wherein the metal mothproof layer is wrapped on the outer surface of the sheath by a brass strip; the armor layer is extruded on the outer surface of the metal mothproof layer by the foaming polymer; the coating protective layer is coated on the outer surface of the armor layer by asphalt; the outer coating layer is formed by winding polypropylene fiber ropes on the outer surface of the coating protective layer. The biological invasion-preventing armored high-voltage power cable adopts the structure of the foaming polymer armor layer and the polypropylene fiber rope outer coating layer, so that the mechanical protection performance of the high-voltage power cable is improved; the structure of brass strip metal mothproof layer, coating protective layer and polypropylene fiber outer coating is adopted, so that the damage of various organisms to the cable is avoided, the mechanical damage is prevented when the cable is laid, and the service life of the cable is prolonged.
Description
Technical Field
The utility model relates to the field of cables, in particular to an armored high-voltage power cable capable of preventing biological invasion.
Background
The high-voltage power cable is usually laid underground, and is extremely easy to mechanically damage before and after installation, so that the reliability of the cable in long-term operation is reduced. Although the metal sheath of the high-voltage power cable has certain mechanical protection performance, the metal sheath also serves as a short-circuit current channel, and once damaged, serious faults are easily caused, and the main function of the metal sheath is not mechanical protection. High voltage cables generally do not have armor designs, and the traditional practice of reinforcing protection is to add metal armor, but can increase the weight and the use cost of the cable, influence the bending radius of the cable simultaneously, and are unfavorable for installation and laying.
When the cable is laid underground and runs for a long time, the probability of the cable encountering organisms such as rodents and termites is increased, and in order to prevent the organisms from invading the cable, a common method is to add chemical agents into the sheath, and the function of preventing the organisms from invading is realized by the chemical agents. However, after a long time, the chemical agent can fail, so that the safety of the cable is reduced, and the reliability of the cable is affected.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model provides the biological damage-preventing armored high-voltage power cable which has a simple structure, prevents the cable from being mechanically damaged during laying and prolongs the service life of the cable.
The technical scheme adopted by the utility model is as follows:
an armoured high voltage power cable for preventing biological attack, which comprises the following components from inside to outside in sequence: the cable comprises a conductor, a conductor shielding layer, an insulating shielding layer, a semiconductive buffer layer, a metal sheath layer, a sheath, a metal mothproof layer, an armor layer, a coating protection layer and an outer coating layer, wherein the conductor is formed by twisting and compacting a plurality of single wires; the conductor shielding layer is formed by extruding conductor shielding materials on the outer surface of a conductor; the insulating layer is formed by extruding crosslinked polyethylene insulating material on the outer surface of the conductor shield; the insulating shielding layer is formed by extruding insulating shielding materials on the insulating outer surface; the metal sheath layer is formed by longitudinally wrapping, welding and embossing a metal plate; the sheath is formed by extruding high-density polyethylene on the outer surface of the metal sheath layer; the metal mothproof layer is formed by wrapping brass strips on the outer surface of the sheath; the armor layer is formed by extruding foaming polymer on the outer surface of the metal mothproof layer; the coating protective layer is formed by coating asphalt on the outer surface of the armor layer; the outer coating layer is formed by winding polypropylene fiber ropes on the outer surface of the coating protective layer.
Preferably, the foaming polymer is formed by foaming polypropylene or polyurethane.
Preferably: the semi-conductive buffer layer is formed by wrapping a plurality of layers of semi-conductive buffer water-blocking tapes on the outer surface of the insulating shield.
Preferably: the metal sheath layer is made of aluminum, aluminum alloy or copper.
Preferably: the thickness of the metal plate of the metal sheath layer is 0.5-4.0mm.
Preferably: the thickness of the brass strip is 0.05-2.0mm.
Preferably: the brass strip is a multilayer overlapped wrapping bag.
Preferably: the thickness of the armor layer is 0.5-5.0mm.
Compared with the prior art, the utility model has the beneficial effects that:
the biological invasion-preventing armored high-voltage power cable adopts the structure of the foamed polymer armor layer and the polypropylene fiber rope outer coating layer, so that the mechanical protection performance of the high-voltage cable is improved, the loss of the foamed polymer armor layer is small, the electric loss of the cable armor is not increased, and the current-carrying capacity and the bending performance of the cable are not influenced; meanwhile, the foaming polymer armor layer can absorb impact energy, does not influence the inner wire core, and has lighter weight and lower cost than the traditional metal armored cable; the structure of the brass band metal mothproof layer, the coating protective layer and the polypropylene fiber outer coating layer is adopted, so that the damage of various organisms to the cable is avoided, the mechanical damage to the cable during the laying process is prevented, the service life of the cable is prolonged, and the reliability of the cable is improved.
Drawings
Fig. 1 is a schematic structural view of the biohazard-resistant armored high voltage power cable of the present utility model.
The main component symbols in the drawings illustrate:
in the figure:
1. conductor 2, conductor shielding layer
3. An insulating layer 4, an insulating shield layer;
5. semiconductive buffer water-blocking layer 6 and metal sheath layer
7. Sheath 8, metal mothproof layer
9. Armor layer 10, coating protective layer
11. And an outer coating layer.
Detailed Description
The utility model is described in detail below with reference to the attached drawings and examples:
as shown in fig. 1, a biological invasion-preventing armored high-voltage power cable is characterized in that a conductor 1 is formed by twisting and compacting a plurality of single wires, and a semiconductive belt is wrapped outside the conductor; the conductor shielding layer 2 is formed by extruding conductor shielding materials on the outer surface of a conductor; the insulating layer 3 is formed by extruding crosslinked polyethylene insulating material on the outer surface of the conductor shield; the insulating shielding layer 4 is formed by extruding insulating shielding materials on the insulating outer surface; the semi-conductive buffer layer 5 is formed by wrapping a plurality of layers of semi-conductive buffer water-blocking tapes on the outer surface of the insulating shield; the metal sheath layer 6 is formed by longitudinally wrapping and welding an aluminum plate and embossing the aluminum plate; the sheath 7 is formed by extruding high-density polyethylene on the outer surface of the metal sheath layer; the metal mothproof layer 8 is formed by wrapping a brass strip on the outer surface of the sheath; the armor layer 9 is formed by extruding foamed polymer on the outer surface of the metal mothproof layer; the coating protective layer 10 is formed by coating asphalt on the outer surface of the armor layer; the outer coating 11 is formed by winding polypropylene fiber ropes on the outer surface of the coating protective layer.
The foaming polymer is formed by foaming polypropylene or polyurethane.
The semi-conductive buffer layer is formed by wrapping a plurality of layers of semi-conductive buffer water-blocking tapes on the outer surface of the insulating shield.
The metal sheath layer is made of aluminum, aluminum alloy or copper.
The thickness of the metal plate of the metal sheath layer is 0.5-4.0mm.
The thickness of the brass strip is 0.05-2.0mm.
The brass strip is a multilayer overlapped wrapping bag.
The thickness of the armor layer is 0.5-5.0mm.
The armoured high-voltage power cable capable of preventing biological invasion is produced by adopting three layers of coextrusion, namely the conductor shielding layer 2, the insulating layer 3 and the insulating shielding layer 4, the layers are directly combined tightly, the product quality is stable, and the eccentricity is easy to control.
The metal mothproof layer 8 of the armoured high-voltage power cable is formed by overlapping and winding brass bands, and the brass bands can be wound by 1 layer or multiple layers. The brass strip has high hardness, can effectively resist biological attack, has small metal shielding loss and does not influence the current-carrying capacity of the cable.
The utility model discloses a biological invasion-preventing armored high-voltage power cable, which adopts a foaming polymer armor layer 9 to replace the traditional metal armor layer, thereby greatly reducing the weight of the cable and the cost. Meanwhile, the cable core can absorb impact energy, so that the cable core inside is effectively protected, the bending performance of the high-voltage cable is not affected, and the cable core is convenient to lay and install; the foam polymer armor layer has small loss, does not increase the electric loss of the cable armor and does not influence the current-carrying capacity of the cable.
According to the biological invasion-preventing armored high-voltage power cable, the structure of the coating protection layer 10 and the outer coating layer 11 is adopted, the coating protection layer 10 is coated on the outer surface of the armor layer by asphalt, the outer coating layer 11 is wrapped on the outer surface of the asphalt coating layer by the polypropylene fiber rope, and the asphalt and the polypropylene fiber rope are bonded into a whole, so that the mechanical protection performance of the cable is further improved, meanwhile, the invasion of various organisms to the cable is avoided, the service life of the cable is greatly prolonged, and the reliability of the cable is improved.
The above description is only of the preferred embodiment of the present utility model, and is not intended to limit the structure of the present utility model in any way. Any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present utility model fall within the technical scope of the present utility model.
Claims (8)
1. An armoured high voltage power cable for preventing biological attack, which comprises the following components from inside to outside in sequence: conductor, conductor shielding layer, insulating shielding layer, semiconductive buffer layer, metal sheath layer, sheath, metal mothproof layer, armor, coating protective layer, outer coating layer, its characterized in that: the conductor is formed by twisting and compacting a plurality of single wires; the conductor shielding layer is formed by extruding conductor shielding materials on the outer surface of a conductor; the insulating layer is formed by extruding crosslinked polyethylene insulating material on the outer surface of the conductor shield; the insulating shielding layer is formed by extruding insulating shielding materials on the insulating outer surface; the metal sheath layer is formed by longitudinally wrapping, welding and embossing a metal plate; the sheath is formed by extruding high-density polyethylene on the outer surface of the metal sheath layer; the metal mothproof layer is formed by wrapping brass strips on the outer surface of the sheath; the armor layer is formed by extruding foaming polymer on the outer surface of the metal mothproof layer; the coating protective layer is formed by coating asphalt on the outer surface of the armor layer; the outer coating layer is formed by winding polypropylene fiber ropes on the outer surface of the coating protective layer.
2. The biohazard protected armored high voltage power cable of claim 1, wherein the foamed polymer is foamed from polypropylene or polyurethane.
3. A biohazard protected armored high voltage power cable according to claim 1, wherein: the semi-conductive buffer layer is formed by wrapping a plurality of layers of semi-conductive buffer water-blocking tapes on the outer surface of the insulating shield.
4. A biohazard protected armored high voltage power cable according to claim 1, wherein: the metal sheath layer is made of aluminum, aluminum alloy or copper.
5. A biohazard protected armored high voltage power cable according to claim 1, wherein: the thickness of the metal plate of the metal sheath layer is 0.5-4.0mm.
6. A biohazard protected armored high voltage power cable according to claim 1, wherein: the thickness of the brass strip is 0.05-2.0mm.
7. A biohazard protected armored high voltage power cable according to claim 1, wherein: the brass strip is a multilayer overlapped wrapping bag.
8. A biohazard protected armored high voltage power cable according to claim 1, wherein: the thickness of the armor layer is 0.5-5.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320648926.6U CN219738585U (en) | 2023-03-29 | 2023-03-29 | Armoured high-voltage power cable for preventing biological invasion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320648926.6U CN219738585U (en) | 2023-03-29 | 2023-03-29 | Armoured high-voltage power cable for preventing biological invasion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219738585U true CN219738585U (en) | 2023-09-22 |
Family
ID=88052701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320648926.6U Active CN219738585U (en) | 2023-03-29 | 2023-03-29 | Armoured high-voltage power cable for preventing biological invasion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219738585U (en) |
-
2023
- 2023-03-29 CN CN202320648926.6U patent/CN219738585U/en active Active
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