CN211907042U - Durable moisture-proof power cable - Google Patents
Durable moisture-proof power cable Download PDFInfo
- Publication number
- CN211907042U CN211907042U CN202020375582.2U CN202020375582U CN211907042U CN 211907042 U CN211907042 U CN 211907042U CN 202020375582 U CN202020375582 U CN 202020375582U CN 211907042 U CN211907042 U CN 211907042U
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- China
- Prior art keywords
- layer
- power cable
- wrapping
- nylon
- copper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000004677 Nylon Substances 0.000 claims abstract description 20
- 229920001778 nylon Polymers 0.000 claims abstract description 20
- 239000002131 composite material Substances 0.000 claims abstract description 18
- 239000004020 conductor Substances 0.000 claims abstract description 18
- 229920003023 plastic Polymers 0.000 claims abstract description 14
- 239000004033 plastic Substances 0.000 claims abstract description 14
- 239000003365 glass fiber Substances 0.000 claims abstract description 13
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 12
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 12
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229920001684 low density polyethylene Polymers 0.000 claims abstract description 9
- 239000004702 low-density polyethylene Substances 0.000 claims abstract description 9
- 229910000077 silane Inorganic materials 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 6
- 239000010959 steel Substances 0.000 claims abstract description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 13
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 5
- 229920002799 BoPET Polymers 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 4
- 239000011889 copper foil Substances 0.000 claims description 4
- 239000000741 silica gel Substances 0.000 claims description 4
- 229910002027 silica gel Inorganic materials 0.000 claims description 4
- 238000010618 wire wrap Methods 0.000 claims description 4
- 229920002943 EPDM rubber Polymers 0.000 claims description 3
- 238000005253 cladding Methods 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000000779 smoke Substances 0.000 claims description 3
- 240000005572 Syzygium cordatum Species 0.000 abstract description 5
- 235000006650 Syzygium cordatum Nutrition 0.000 abstract description 5
- 230000032683 aging Effects 0.000 abstract description 5
- 150000001875 compounds Chemical class 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000009941 weaving Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 230000017105 transposition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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- Insulated Conductors (AREA)
Abstract
The utility model discloses a dampproofing power cable of durable type, including the inner conductor, the outside of inner conductor has nylon dampproofing dielectric layer, interior semiconductive shield layer, silane grafting crosslinked low density polyethylene insulating layer, outer semiconductive shield layer, outer nylon dampproofing dielectric layer, copper-plastic composite band around covering, PTFE around band layer, prevent fires around band layer, inner sheath, steel wire armor, glass fiber high temperature line around covering and oversheath in proper order, interior nylon dampproofing dielectric layer with outer nylon dampproofing dielectric layer thickness is 0.5mm to 1mm, silane grafting crosslinked low density polyethylene insulating layer thickness is 10mm to 18 mm. The power cable can effectively prevent moisture from permeating to cause the aging phenomenon of the insulating layer water tree, and is excellent in insulating property, good in electrical shielding property and durable in use.
Description
Technical Field
The utility model relates to a power cable technical field especially relates to a dampproofing power cable of durable type.
Background
A large number of cables are applied in power construction, the cable has good insulating property, the power supply reliability can be improved, the appearance of the city is beautified, and the popularization and application values are higher. In the cable construction process, the phenomenon that the cable is affected with damp and enters water sometimes happens, and the potential hidden danger influencing the safe operation of the cable is formed. When the cable is laid, the cable often passes through roads, bridges and the like, and due to reasons such as weather and the like, moisture can not permeate into the cable, the water tree aging phenomenon can occur under the action of an electric field, the cable insulation is damaged, and finally the cable breakdown accident is caused. If the thickness of the cable insulating layer is only increased, the water tree aging phenomenon is prevented, the temporary solution and the permanent solution are not achieved, and the cable is not beneficial to the manufacture of small-diameter and small-sized cables.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art not enough, the technical problem that solve provides a dampproofing power cable of durable type, can prevent effectively that moisture infiltration from causing insulating layer water tree ageing phenomenon, and insulating properties is excellent, and electrical shielding performance is good, durable use.
The utility model discloses a make above-mentioned technical problem solve through following technical scheme.
The durable moistureproof power cable comprises an inner conductor, wherein the outer part of the inner conductor is sequentially coated with an inner nylon moistureproof dielectric layer, an inner semiconductive shielding layer, a silane grafted crosslinked low-density polyethylene insulating layer, an outer semiconductive shielding layer, an outer nylon moistureproof dielectric layer, a copper-plastic composite tape wrapping layer, a PTFE (polytetrafluoroethylene) wrapping tape layer, a fireproof wrapping tape layer, an inner sheath, a steel wire armor layer, a glass fiber high-temperature wire wrapping layer and an outer sheath, the thicknesses of the inner nylon moistureproof dielectric layer and the outer nylon moistureproof dielectric layer are 0.5mm to 1mm, and the thickness of the silane grafted crosslinked low-density polyethylene insulating layer is 10mm to 18 mm.
Preferably, the inner conductor is formed by stranding a plurality of tinned copper monofilaments, and the diameter of each tinned copper monofilament is 0.05mm to 0.08 mm.
Preferably, the lay length of the inner conductor is 12 to 18 times the outer diameter of the inner conductor.
Preferably, the thickness of the inner semiconductive shielding layer is 1mm to 2mm, and the thickness of the outer semiconductive shielding layer is 1mm to 1.5 mm.
Preferably, the inner semiconductive shield layer and the outer semiconductive shield layer are both EVA resin layers.
Preferably, the copper-plastic composite tape wrapping layer is of a copper-plastic composite tape gap wrapping structure, and the copper-plastic composite tape comprises a copper foil tape outer layer and a PET film inner layer.
Preferably, the PTFE wrapping tape layer is a gap wrapping structure.
Preferably, the fireproof wrapping band layer is of a ceramic silica gel composite band wrapping structure.
Preferably, the inner sheath and the outer sheath are low-smoke halogen-free ethylene propylene diene monomer insulating sheaths.
Preferably, the glass fiber high-temperature wire winding cladding is of a double-layer glass fiber high-temperature wire mutually reverse spiral winding weaving structure, and the spiral angles are different.
The utility model has the advantages that:
1. through interior nylon dampproofing dielectric layer and outer nylon dampproofing dielectric layer, can effectually prevent aqueous vapor infiltration insulating layer, great delay insulating layer takes place the water tree phenomenon of ageing, control insulating layer thickness at 10mm to 18mm, prevent that the cable external diameter from thickening, withstand voltage nature is better, extension cable life, durable use.
2. Copper is moulded compound area and is leaked to the outside and restrain the interference that comes from external signal around the covering can effectual signal or the noise that restraines inside, and copper is moulded compound area and is included outer and the PET film inlayer of copper foil tape for this shielding layer is difficult for appearing the fracture phenomenon, adopts PTFE to wind the band layer, and coefficient of friction is little, reduces copper and moulds compound area around covering stress concentration, improves the stability of reinforcing shielding characteristic, guarantees effectual shielding performance, durable use.
3. Set up steel wire armor, glass fiber high temperature wire-wound covering between inner sheath and oversheath, help improving the anti mechanical impact force of whole cable to compromise and improved antistatic and interference killing feature, increase of service life.
4. Adopt ceramic silica gel composite band to wind the band layer as fire prevention, have better electric insulating property, satisfy fireproof cable's the oxygen proof fire prevention effect, form double-deck fire behavior with glass fiber high temperature wire winding covering, effectively prolong heat-conduction to the inside time of cable, reduce the inside temperature of cable, ensure cable safety normal operating.
Drawings
Fig. 1 is a schematic cross-sectional structure diagram of an embodiment of the present application.
In the figure: 1-an inner conductor, 2-an inner nylon damp-proof dielectric layer, 3-an inner semi-conductive shielding layer, 4-a silane grafted cross-linked low-density polyethylene insulating layer, 5-an outer semi-conductive shielding layer, 6-an outer nylon damp-proof dielectric layer, 7-a copper-plastic composite tape wrapping layer, 8-a PTFE wrapping tape layer, 9-a fireproof wrapping tape layer, 10-an inner sheath, 11-a steel wire armor layer, 12-a glass fiber high-temperature wire wrapping layer and 13-an outer sheath.
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 provides a dampproofing power cable of durable type, including inner conductor 1, specific saying so, inner conductor 1 constitutes for a plurality of tinned copper monofilament transposition, the diameter of tinned copper monofilament is 0.05mm to 0.08mm, and is further, the lay length of inner conductor 1 is 12 to 18 times of inner conductor 1 external diameter.
The outer portion of the inner conductor 1 is sequentially coated with an inner nylon damp-proof medium layer 2, an inner semi-conductive shielding layer 3, a silane grafted cross-linked low-density polyethylene insulating layer 4, an outer semi-conductive shielding layer 5, an outer nylon damp-proof medium layer 6, a copper-plastic composite tape wrapping layer 7, a PTFE (polytetrafluoroethylene) wrapping tape layer 8, a fireproof wrapping tape layer 9, an inner sheath 10, a steel wire armor layer 11, a glass fiber high-temperature wire wrapping layer 12 and an outer sheath 13. The thickness of the inner nylon moisture-proof medium layer 2 and the thickness of the outer nylon moisture-proof medium layer 6 are 0.5mm to 1mm, and the thickness of the silane grafted cross-linked low-density polyethylene insulating layer 4 is 10mm to 18 mm. For example, the inner semiconductive shielding layer 3 and the outer semiconductive shielding layer 5 may be EVA resin layers, and preferably, the thickness of the inner semiconductive shielding layer 3 is 1mm to 2mm, and the thickness of the outer semiconductive shielding layer 5 is 1mm to 1.5 mm. Specifically, the copper-plastic composite tape wrapping layer 7 is of a copper-plastic composite tape gap wrapping structure, and the copper-plastic composite tape comprises a copper foil tape outer layer and a PET film inner layer. The PTFE wrapping tape layer 8 preferably adopts a gap wrapping structure. Preferably, the fireproof wrapping band layer 9 is a ceramic silica gel composite band wrapping structure. Preferably, the glass fiber high-temperature wire-wound cladding 12 is a double-layer glass fiber high-temperature wire which is in a reverse spiral winding weaving structure and has different spiral angles. For example, the inner sheath 10 and the outer sheath 13 may be low smoke halogen-free epdm rubber insulating sheaths.
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 to 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. Dampproofing power cable of durable type, characterized by: the cable comprises an inner conductor (1), wherein the outer part of the inner conductor (1) is sequentially coated with an inner nylon moistureproof dielectric layer (2), an inner semiconductive shielding layer (3), a silane grafted crosslinked low-density polyethylene insulating layer (4), an outer semiconductive shielding layer (5), an outer nylon moistureproof dielectric layer (6), a copper-plastic composite tape wrapping layer (7), a PTFE (polytetrafluoroethylene) wrapping tape layer (8), a fireproof wrapping tape layer (9), an inner sheath (10), a steel wire armor layer (11), a glass fiber high-temperature wire wrapping layer (12) and an outer sheath (13), the thickness of the inner nylon moistureproof dielectric layer (2) and the thickness of the outer nylon moistureproof dielectric layer (6) are 0.5mm to 1mm, and the thickness of the silane grafted crosslinked low-density polyethylene insulating layer (4) is 10mm to 18 mm.
2. A durable moisture-resistant power cable as claimed in claim 1, wherein: the inner conductor (1) is formed by stranding a plurality of tinned copper monofilaments, and the diameter of each tinned copper monofilament is 0.05 mm-0.08 mm.
3. A durable moisture-resistant power cable as claimed in claim 1, wherein: the lay length of the inner conductor (1) is 12 to 18 times of the outer diameter of the inner conductor (1).
4. A durable moisture-resistant power cable as claimed in claim 1, wherein: the thickness of the inner semi-conductive shielding layer (3) is 1mm to 2mm, and the thickness of the outer semi-conductive shielding layer (5) is 1mm to 1.5 mm.
5. A durable moisture-resistant power cable as claimed in claim 1, wherein: the inner semi-conductive shielding layer (3) and the outer semi-conductive shielding layer (5) are both EVA resin layers.
6. A durable moisture-resistant power cable as claimed in claim 1, wherein: the copper-plastic composite tape wrapping layer (7) is of a copper-plastic composite tape gap wrapping structure, and the copper-plastic composite tape comprises a copper foil tape outer layer and a PET film inner layer.
7. A durable moisture-resistant power cable as claimed in claim 1, wherein: the PTFE is around band layer (8) and is around the package structure for the clearance.
8. A durable moisture-resistant power cable as claimed in claim 1, wherein: the fireproof wrapping belt layer (9) is of a ceramic silica gel composite belt wrapping structure.
9. A durable moisture-resistant power cable as claimed in claim 1, wherein: the inner sheath (10) and the outer sheath (13) are low-smoke halogen-free ethylene propylene diene monomer insulating sheaths.
10. A durable moisture-resistant power cable as claimed in claim 1, wherein: the glass fiber high-temperature wire-wound cladding (12) is of a double-layer glass fiber high-temperature wire mutually reverse spiral winding braided structure and has different spiral angles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020375582.2U CN211907042U (en) | 2020-03-23 | 2020-03-23 | Durable moisture-proof power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020375582.2U CN211907042U (en) | 2020-03-23 | 2020-03-23 | Durable moisture-proof power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211907042U true CN211907042U (en) | 2020-11-10 |
Family
ID=73269284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020375582.2U Expired - Fee Related CN211907042U (en) | 2020-03-23 | 2020-03-23 | Durable moisture-proof power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211907042U (en) |
-
2020
- 2020-03-23 CN CN202020375582.2U patent/CN211907042U/en not_active Expired - Fee Related
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Legal Events
| 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: 20201110 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |