CN214152524U - Moisture-proof reinforced thin-diameter insulated power cable - Google Patents
Moisture-proof reinforced thin-diameter insulated power cable Download PDFInfo
- Publication number
- CN214152524U CN214152524U CN202120221878.3U CN202120221878U CN214152524U CN 214152524 U CN214152524 U CN 214152524U CN 202120221878 U CN202120221878 U CN 202120221878U CN 214152524 U CN214152524 U CN 214152524U
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- Prior art keywords
- layer
- power cable
- moisture
- polypropylene
- insulated power
- 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
- -1 polypropylene Polymers 0.000 claims abstract description 26
- 239000004743 Polypropylene Substances 0.000 claims abstract description 25
- 229920001155 polypropylene Polymers 0.000 claims abstract description 25
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 17
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229920003023 plastic Polymers 0.000 claims abstract description 15
- 239000004033 plastic Substances 0.000 claims abstract description 15
- 239000002131 composite material Substances 0.000 claims abstract description 14
- 239000004020 conductor Substances 0.000 claims abstract description 14
- 239000000805 composite resin Substances 0.000 claims abstract description 11
- 239000011347 resin Substances 0.000 claims abstract description 10
- 229920005989 resin Polymers 0.000 claims abstract description 10
- 150000001875 compounds Chemical class 0.000 claims abstract description 8
- 239000010949 copper Substances 0.000 claims abstract description 8
- 229910052802 copper Inorganic materials 0.000 claims abstract description 8
- 229920005549 butyl rubber Polymers 0.000 claims abstract description 7
- 239000004677 Nylon Substances 0.000 claims abstract description 5
- 239000005030 aluminium foil Substances 0.000 claims abstract description 5
- 229920001778 nylon Polymers 0.000 claims abstract description 5
- 239000002390 adhesive tape Substances 0.000 claims abstract description 4
- 239000011248 coating agent Substances 0.000 claims abstract description 3
- 238000000576 coating method Methods 0.000 claims abstract description 3
- 238000005253 cladding Methods 0.000 claims abstract 2
- 239000004800 polyvinyl chloride Substances 0.000 claims description 9
- 238000010521 absorption reaction Methods 0.000 claims description 8
- 229910001335 Galvanized steel Inorganic materials 0.000 claims description 6
- 239000011889 copper foil Substances 0.000 claims description 6
- 239000008397 galvanized steel Substances 0.000 claims description 6
- 229920006262 high density polyethylene film Polymers 0.000 claims description 6
- 238000010292 electrical insulation Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 229920000915 polyvinyl chloride Polymers 0.000 description 7
- 238000004804 winding Methods 0.000 description 3
- 240000005572 Syzygium cordatum Species 0.000 description 2
- 235000006650 Syzygium cordatum Nutrition 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Insulated Conductors (AREA)
Abstract
The utility model discloses a dampproofing strenghthened type thin footpath insulated power cable, reach including the inner conductor the outside cladding in proper order of inner conductor has the compound area of iron powder resin around package insulating layer, copper plastic composite belt around package shielding layer, butyl rubber dampproof course, polypropylene hygroscopic layer, aluminium foil adhesive tape around package, nylon anticorrosive coating and PVC oversheath, the compound area of iron powder resin is taken the lid around package structure for iron powder polypropylene composite resin area three-layer spiral around the package insulating layer, the polypropylene hygroscopic layer overlaps around the package structure for polypropylene resin area multilayer. The power cable has better moisture-proof and water-blocking performance on the premise of manufacturing the power cable in a small diameter, ensures excellent electrical insulation performance, and is durable in use.
Description
Technical Field
The application relates to the technical field of cables, in particular to a moisture-proof reinforced small-diameter insulated power cable.
Background
Conventional cables are cable products of conventional meaning that are used in large numbers in existing power grids and consumers, such as most low voltage cables, medium voltage cables, etc. The high molecular material for the cable, except polyvinyl chloride, has the largest usage amount of polyolefin, wherein polyethylene and polypropylene are the most commonly used, and are commonly used for manufacturing insulating layers of various wires and cables due to good physical and mechanical properties, high heat resistance, excellent electrical insulation and chemical stability. However, due to manufacturing conditions, weather and other reasons, moisture is inevitably permeated into the cable, water tree aging can occur under the action of an electric field, the insulation of the cable is damaged, and finally, a cable breakdown accident is caused.
SUMMERY OF THE UTILITY MODEL
This application is not enough to prior art, and the technical problem that solve provides an insulating power cable of thin footpath of dampproofing strenghthened type, under thin footpath preparation prerequisite, has better dampproofing water blocking performance, guarantees excellent electrical insulation performance, durable use.
The present application solves the above-mentioned problems by the following technical solutions.
Dampproofing strenghthened type thin footpath insulated power cable, including the inner conductor and the outer portion of inner conductor is wrapped in proper order has the compound area of iron powder resin to wind a package insulating layer, the compound area of copper plastic winds package shielding layer, butyl rubber dampproof course, polypropylene hygroscopic layer, aluminium foil adhesive tape around package covering, nylon anticorrosive coating and PVC oversheath, the compound area of iron powder resin is lapped the cover around the package insulating layer for iron powder polypropylene composite resin takes three-layer spiral and is lapped the package structure, the polypropylene hygroscopic layer is that the multilayer of polypropylene resin takes overlaps around the package structure.
Preferably, the inner conductor is formed by concentrically twisting and pressing a plurality of strands around a galvanized steel wire.
Preferably, the strand is formed by bundling a plurality of tinned copper monofilaments with the diameter of 0.02mm to 0.08 mm.
Preferably, the copper-plastic composite tape lapping shielding layer is a copper-plastic composite tape one-way spiral lapping and covering lapping structure, and the copper-plastic composite tape comprises a copper foil tape outer layer and a high-density polyethylene film inner layer.
Preferably, the thickness ratio of the inner layer of the high-density polyethylene film to the outer layer of the copper foil strip is 0.85:1 to 1.2: 1.
Preferably, the thickness of the iron powder resin composite tape wrapping insulating layer is 5mm to 24 mm.
Preferably, the PVC outer sheath has a thickness of not less than 1.6 mm.
Preferably, the thickness of the polypropylene moisture absorption layer is 0.15mm to 0.4 mm.
The beneficial effect of this application:
1. through set up the butyl rubber dampproof course around the package shielding layer at copper-plastic composite strip and between the PVC oversheath, the polypropylene hygroscopic layer, the aluminium foil sticky tape is three-layer dampproofing altogether around the covering, the moisture absorption, the composite construction blocks water, outside aqueous vapor is the aluminium foil sticky tape around the covering separation, receive operating mode condition and weather reason etc. after the polypropylene hygroscopic layer absorbed moisture, because the excellent dampproofing characteristic of butyl rubber dampproof course, effectual separation moisture further to shielding layer and insulating layer diffusion, thereby effectually prevent that the shielding layer from corroding and the insulating layer takes place the water tree ageing, thereby the electrical insulation characteristic of cable has been protected, service life is delayed.
2. The iron powder polypropylene composite resin belt three-layer spiral lapping and wrapping structure is adopted to replace the original polypropylene insulating layer, the shielding signal interference capacity is enhanced between the inner conductor and the shielding layer, the reduction of power signal attenuation is facilitated, the anti-interference capacity is enhanced, and the diameter thinning manufacturing is facilitated.
3. In the inner conductor, the linear expansion coefficient of the galvanized steel wire is smaller than that of the tinned copper wire, so that the balanced absorption of the extension amount of the cable is facilitated, the extension force of a cable end is restrained, the laying adaptability of the site in a complex environment is improved, the tensile strength of the galvanized steel wire is greater than that of the tinned copper wire, the occurrence of wire breakage is restrained, the electrical characteristics of good long-distance signal transmission are guaranteed, and the bending resistance of the cable is facilitated to be improved.
Drawings
Fig. 1 is a schematic cross-sectional structure diagram of an embodiment of the present application.
Description of reference numerals:
the cable comprises an inner conductor 1, an iron powder resin composite tape lapping insulating layer 2, a copper plastic composite tape lapping shielding layer 3, a butyl rubber moisture-proof layer 4, a polypropylene moisture absorption layer 5, an aluminum foil tape lapping layer 6, a nylon anticorrosion layer 7, a PVC outer sheath 8, a stranded wire 9 and a galvanized steel wire 10.
Detailed Description
The terminology used in the description of the embodiments of the present application is for the purpose of describing particular embodiments of the present application only and is not intended to be limiting of the application, as the embodiments of the present application will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1, the moisture-proof reinforced small-diameter insulated power cable according to the embodiment of the present application includes an inner conductor 1, specifically, the inner conductor 1 is formed by concentrically twisting and pressing a plurality of strands 9 around a galvanized steel wire 10, and further, the strands 9 are formed by twisting a plurality of tinned copper monofilaments with a diameter of 0.02mm to 0.08 mm.
The outer portion of the inner conductor 1 is sequentially coated with an iron powder resin composite tape, a winding insulating layer 2, a copper plastic composite tape, a winding shielding layer 3, a butyl rubber moisture-proof layer 4, a polypropylene moisture absorption layer 5, an aluminum foil adhesive tape, a winding layer 6, a nylon anticorrosive layer 7 and a PVC outer sheath 8. The iron powder resin composite tape lapping insulating layer 2 is an iron powder polypropylene composite resin tape three-layer spiral lapping and covering lapping structure, and the thickness of the iron powder resin composite tape lapping insulating layer 2 is 5mm to 24 mm. In one embodiment, the copper-plastic composite tape lapping and shielding layer 3 is a copper-plastic composite tape one-way spiral lapping and lapping structure, the copper-plastic composite tape comprises a copper foil tape outer layer and a high-density polyethylene film inner layer, and further, the thickness ratio of the high-density polyethylene film inner layer to the copper foil tape outer layer is 0.85:1 to 1.2: 1. Polypropylene moisture absorption layer 5 is overlapping for polypropylene resin area multilayer and winds the package structure, and is preferred, polypropylene moisture absorption layer 5 thickness is 0.15mm to 0.4 mm. The thickness of the PVC outer sheath 8 is not less than 1.6 mm.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present application, and are used for illustrating the technical solutions of the present application, but not limiting the same, and the scope of the present application is not limited thereto, and although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope disclosed in the present application; such modifications, changes or substitutions do not depart from the spirit and scope of the exemplary embodiments of the present application, and are intended to be covered by the scope of the present application.
Claims (8)
1. Dampproofing strenghthened type thin footpath insulated power cable, characterized by: including inner conductor (1) and inner conductor (1) outside cladding in proper order has the compound area of iron powder resin to wind around package insulating layer (2), the compound area of copper plastic winds package shielding layer (3), butyl rubber dampproof course (4), polypropylene hygroscopic layer (5), aluminium foil adhesive tape around package layer (6), nylon anticorrosive coating (7) and PVC oversheath (8), the compound area of iron powder resin winds package insulating layer (2) and takes the lid around the package structure for iron powder polypropylene composite resin area three-layer spiral, polypropylene hygroscopic layer (5) overlap for the polypropylene resin area multilayer around the package structure.
2. The moisture-proof reinforced small-diameter insulated power cable according to claim 1, characterized in that: the inner conductor (1) is formed by concentrically twisting and pressing a plurality of strands (9) around a galvanized steel wire (10).
3. The moisture-proof reinforced small-diameter insulated power cable according to claim 2, characterized in that: the folded yarn (9) is formed by bundling a plurality of tinned copper monofilaments with the diameter of 0.02mm to 0.08 mm.
4. The moisture-proof reinforced small-diameter insulated power cable according to claim 1, characterized in that: the copper-plastic composite tape lapping shielding layer (3) is of a copper-plastic composite tape one-way spiral lapping and covering lapping structure, and the copper-plastic composite tape comprises a copper foil tape outer layer and a high-density polyethylene film inner layer.
5. The moisture-proof reinforced small-diameter insulated power cable according to claim 4, wherein: the thickness ratio of the inner layer of the high-density polyethylene film to the outer layer of the copper foil strip is 0.85:1 to 1.2: 1.
6. The moisture-proof reinforced small-diameter insulated power cable according to claim 1, characterized in that: the thickness of the iron powder resin composite tape wrapping insulating layer (2) is 5mm to 24 mm.
7. The moisture-proof reinforced small-diameter insulated power cable according to claim 1, characterized in that: the thickness of the PVC outer sheath (8) is not less than 1.6 mm.
8. The moisture-proof reinforced small-diameter insulated power cable according to claim 1, characterized in that: the thickness of the polypropylene moisture absorption layer (5) is 0.15mm to 0.4 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120221878.3U CN214152524U (en) | 2021-01-27 | 2021-01-27 | Moisture-proof reinforced thin-diameter insulated power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120221878.3U CN214152524U (en) | 2021-01-27 | 2021-01-27 | Moisture-proof reinforced thin-diameter insulated power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214152524U true CN214152524U (en) | 2021-09-07 |
Family
ID=77549092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120221878.3U Expired - Fee Related CN214152524U (en) | 2021-01-27 | 2021-01-27 | Moisture-proof reinforced thin-diameter insulated power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214152524U (en) |
-
2021
- 2021-01-27 CN CN202120221878.3U patent/CN214152524U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210907 |