CN219832228U - Impact-resistant steel-cored aluminum stranded wire core overhead cable - Google Patents
Impact-resistant steel-cored aluminum stranded wire core overhead cable Download PDFInfo
- Publication number
- CN219832228U CN219832228U CN202320488655.2U CN202320488655U CN219832228U CN 219832228 U CN219832228 U CN 219832228U CN 202320488655 U CN202320488655 U CN 202320488655U CN 219832228 U CN219832228 U CN 219832228U
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- China
- Prior art keywords
- layer
- aluminum alloy
- aluminum
- overhead cable
- resistant steel
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 39
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 84
- 239000004020 conductor Substances 0.000 claims abstract description 54
- 239000004677 Nylon Substances 0.000 claims abstract description 23
- 229920001778 nylon Polymers 0.000 claims abstract description 23
- 229920005549 butyl rubber Polymers 0.000 claims abstract description 18
- 229910001335 Galvanized steel Inorganic materials 0.000 claims abstract description 17
- 239000008397 galvanized steel Substances 0.000 claims abstract description 17
- 229920003020 cross-linked polyethylene Polymers 0.000 claims abstract description 12
- 239000004703 cross-linked polyethylene Substances 0.000 claims abstract description 12
- 239000011888 foil Substances 0.000 claims abstract description 10
- 230000006837 decompression Effects 0.000 claims abstract description 9
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 8
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 5
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 5
- 239000011347 resin Substances 0.000 claims abstract description 5
- 229920005989 resin Polymers 0.000 claims abstract description 5
- 229910000077 silane Inorganic materials 0.000 claims abstract description 5
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims abstract description 4
- 210000001503 joint Anatomy 0.000 claims description 6
- 238000009941 weaving Methods 0.000 claims description 6
- 238000005253 cladding Methods 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 230000017105 transposition Effects 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 3
- 239000005030 aluminium foil Substances 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims 3
- 230000035939 shock Effects 0.000 claims 2
- 229910045601 alloy Inorganic materials 0.000 claims 1
- 239000000956 alloy Substances 0.000 claims 1
- 239000010410 layer Substances 0.000 abstract description 85
- 238000005260 corrosion Methods 0.000 abstract description 3
- 239000011241 protective layer Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- FAIFRACTBXWXGY-JTTXIWGLSA-N COc1ccc2C[C@H]3N(C)CC[C@@]45[C@@H](Oc1c24)[C@@]1(OC)C=C[C@@]35C[C@@H]1[C@](C)(O)CCc1ccccc1 Chemical compound COc1ccc2C[C@H]3N(C)CC[C@@]45[C@@H](Oc1c24)[C@@]1(OC)C=C[C@@]35C[C@@H]1[C@](C)(O)CCc1ccccc1 FAIFRACTBXWXGY-JTTXIWGLSA-N 0.000 description 1
- 229910018605 Ni—Zn Inorganic materials 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000009434 installation 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
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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- Insulated Conductors (AREA)
Abstract
The utility model discloses an impact-resistant steel-cored aluminum stranded wire core overhead cable which comprises an inner conductor, a semiconductive nylon belt inner wrapping layer, an XLPE insulating layer, a semiconductive nylon belt outer wrapping layer, an aluminum foil layer, a ferrite film wrapping layer, a PET resin belt longitudinal wrapping protective layer, a butyl rubber water-blocking decompression layer, an impact-resistant aluminum alloy wire plain-woven mesh armor layer, a nylon anti-corrosion layer and a silane grafted crosslinked high-density polyethylene outer sheath layer, wherein the inner conductor comprises a galvanized steel stranded wire inner core, a plurality of inner aluminum alloy fan-shaped conductors are stranded around the outer part of the galvanized steel stranded wire inner core to form an aluminum stranded wire core inner layer, and a plurality of outer aluminum alloy fan-shaped conductors are stranded around the outer part of the aluminum stranded wire inner core to form an aluminum stranded wire core outer layer. The overhead cable has high mechanical strength and better impact resistance, and has good dampproof and water-blocking properties.
Description
Technical Field
The utility model relates to the technical field of cables, in particular to an impact-resistant steel-cored aluminum stranded wire overhead cable.
Background
The cross-linked polyethylene 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. The crosslinked polyethylene power cable is laid on the bracket, is required to be fixed on the indoor and outdoor, in the tunnel and the like, is laid in the concrete pipe or the cable pit, is allowed to be directly buried in loose soil, and has better electrical parameters and mechanical parameters than other types of power cable products, so that the crosslinked polyethylene power cable is widely used. However, under the working condition of outdoor low-temperature environment, the common crosslinked polyethylene aluminum alloy cable product has poor tensile property and has the occurrence of conductor breakage, and how to ensure the mechanical strength, impact resistance, moisture resistance, water resistance and insulativity of the overhead cable is an unavoidable important subject.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model aims to provide the impact-resistant steel-cored aluminum strand overhead cable which has high mechanical strength and better impact resistance and has good dampproof and water-blocking properties.
The utility model solves the technical problems through the following technical proposal.
The utility model provides an impact-resistant steel-cored aluminum stranded wire core aerial cable, includes the inner conductor and cladding in proper order the outside semiconductive nylon area inner wrapping layer, XLPE insulating layer, semiconductive nylon area outer wrapping layer, aluminium foil layer, ferrite film wrapping layer, PET resin area are indulged and are wrapped the inoxidizing coating, butyl rubber water blocking decompression layer, impact-resistant aluminum alloy wire plain weave net armor, nylon anticorrosive coating and silane grafting crosslinked high density polyethylene oversheath layer of inner conductor, the inner conductor includes galvanized steel stranded wire inner core, and a plurality of inlayer aluminum alloy fan-shaped conductors are encircleed around galvanized steel stranded wire inner core outside transposition constitutes aluminum stranded wire inner layer, and a plurality of outer aluminum alloy fan-shaped conductors are encircleed around aluminum stranded wire inner layer outside transposition constitutes the outer of aluminum stranded wire core, impact-resistant aluminum alloy wire plain weave net armor includes inside and outside double-deck aluminum alloy wire plain weave net, inlayer aluminum alloy wire plain weave net is fine aluminum alloy wire weaving net structure, outer aluminum alloy wire plain weave net is coarse aluminum alloy wire weaving structure, coarse aluminum alloy wire plain weave forming plain weave net wire diameter is 2 to 5 times.
Preferably, the inner layer aluminum alloy fan-shaped conductor and the outer layer aluminum alloy fan-shaped conductor are formed by twisting a plurality of aluminum alloy wires and compressing the aluminum alloy wires into a fan-shaped conductor structure.
Preferably, the aluminum alloy wire has a diameter of 1mm to 3mm.
Preferably, the XLPE insulation layer has a thickness of 4mm to 6mm.
Preferably, the inner layer circumferential butt joint surfaces contacted between the adjacent inner layer aluminum alloy fan-shaped conductors and the outer layer circumferential butt joint surfaces contacted between the adjacent outer layer aluminum alloy fan-shaped conductors are arranged in a circumferential staggered manner.
Preferably, the weaving density of the inner layer aluminum alloy wire plain weave net is larger than that of the outer layer aluminum alloy wire plain weave net.
Preferably, the aluminum foil layer has a thickness of 30 μm to 55 μm.
Preferably, the galvanized steel strand inner core is formed by twisting a plurality of galvanized steel wires with the wire diameters of 0.8mm to 2.2 mm.
Preferably, the butyl rubber water-blocking decompression layer is of a multi-layer covering and wrapping structure of a butyl rubber belt, and the covering rate of the butyl rubber belt is one-fourth to one-half of the width of the butyl rubber belt.
Preferably, the inner wrapping layer of the semi-conductive nylon belt and the outer wrapping layer of the semi-conductive nylon belt are of a multi-layer overlapping wrapping structure of the semi-conductive nylon belt, and the overlapping rate is 20-35%.
The utility model has the beneficial effects that:
1. the linear expansion coefficient of the inner core of the galvanized steel wire positioned in the center of the inner conductor is smaller than that of the aluminum alloy wire of the inner-outer aluminum alloy fan-shaped conductor, so that the expansion amount of the cable is balanced and absorbed, the extension force of the cable end is restrained, the erection and installation adaptability under the complex field environment is improved, the tensile strength of the galvanized steel wire is larger than that of the aluminum alloy wire, the occurrence of broken wires is restrained, and the mechanical strength, the tensile resistance and the bending resistance of the cable are improved.
2. The double-layer annular aluminum alloy conductor structure formed by the inner aluminum alloy fan-shaped conductors and the outer aluminum alloy fan-shaped conductors is beneficial to relieving stress concentration of the inner conductors and reducing torque force during bending, is beneficial to improving bending resistance of the inner aluminum alloy fan-shaped conductors when the cable is bent, relieving stress concentration of contact parts of the inner aluminum alloy fan-shaped conductors and the outer aluminum alloy fan-shaped conductors, and is beneficial to improving mechanical strength and bending resistance because inner circumferential abutting surfaces, which are in contact with each other, of the adjacent inner aluminum alloy fan-shaped conductors are staggered with outer circumferential abutting surfaces, which are in contact with each other, of the adjacent outer aluminum alloy fan-shaped conductors are prevented from being broken due to the fact that the inner circumferential abutting surfaces and the outer circumferential abutting surfaces are in contact with each other under the stress.
3. The anti-impact aluminum alloy wire plain net armor layer with the double-layer structure of the inner and outer aluminum alloy wire plain net is added outside the cable core, the aluminum alloy wire diameter of the outer aluminum alloy wire plain net is larger than that of the inner aluminum alloy wire plain net, and the anti-impact aluminum alloy wire plain net armor layer has flexibility, is beneficial to enhancing the mechanical strength of the armor layer, improves the impact resistance and has better durability.
4. The dampproof and water-blocking functions are enhanced through the butyl rubber water-blocking decompression layer, so that the diffusion of water to the cable core is effectively inhibited, the safety and reliability of the cable are improved, and the service life of the cable is prolonged.
5. The double-layer shielding layer structure is formed by the aluminum foil layer and the ferrite film wrapping layer, and the ferrite film wrapping layer is wrapped outside the aluminum foil layer, such as the Ni-Zn ferrite film wrapping layer, so that the stress concentration of the aluminum foil layer can be effectively slowed down, the cracking of the aluminum foil layer is prevented, and the durability is better.
Drawings
FIG. 1 is a schematic cross-sectional view of an embodiment of the present utility model.
In the figure: the high-voltage aluminum alloy cable conductor comprises a 1-inner conductor, a 2-semiconductive nylon belt inner wrapping layer, a 3-XLPE insulating layer, a 4-semiconductive nylon belt outer wrapping layer, a 5-aluminum foil layer, a 6-ferrite film wrapping layer, a 7-PET resin belt longitudinal wrapping protective layer, an 8-butyl rubber water-blocking decompression layer, a 9-impact-resistant aluminum alloy wire plain-woven mesh armor layer, a 10-nylon anti-corrosion layer, an 11-silane grafted crosslinked high-density polyethylene outer sheath layer, a 12-galvanized steel strand inner core, a 13-inner aluminum alloy fan-shaped conductor and a 14-outer aluminum alloy fan-shaped conductor.
Detailed Description
The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings.
As shown in fig. 1, the impact-resistant steel-cored aluminum stranded overhead cable provided by the embodiment of the utility model comprises an inner conductor 1, wherein the inner conductor 1 comprises a galvanized steel stranded wire inner core 12, and further, the galvanized steel stranded wire inner core 12 is formed by stranding a plurality of galvanized steel wires with the wire diameters of 0.8mm to 2.2 mm. The inner aluminum alloy fan-shaped conductors 13 are stranded around the outer parts of the galvanized steel strand inner cores 12 to form an aluminum strand core inner layer, the outer aluminum alloy fan-shaped conductors 14 are stranded around the outer parts of the aluminum strand core inner layer to form an aluminum strand core outer layer, and further, the inner circumferential butt joint surfaces, which are contacted with the inner aluminum alloy fan-shaped conductors 13, of adjacent inner aluminum alloy fan-shaped conductors and the outer circumferential butt joint surfaces, which are contacted with the outer aluminum alloy fan-shaped conductors 14, of adjacent outer aluminum alloy fan-shaped conductors are arranged in a circumferential staggered mode. The inner layer aluminum alloy sector conductor 13 and the outer layer aluminum alloy sector conductor 14 are formed by twisting and compressing a plurality of aluminum alloy wires, and the diameters of the aluminum alloy wires are 1-3 mm.
The outer part of the inner conductor 1 is sequentially coated with a semiconductive nylon belt inner wrapping layer 2, an XLPE insulating layer 3, a semiconductive nylon belt outer wrapping layer 4, an aluminum foil layer 5, a ferrite film wrapping layer 6, a PET resin belt longitudinal wrapping protective layer 7, a butyl rubber water-blocking decompression layer 8, an anti-impact aluminum alloy wire plain weave net armor layer 9, an anti-corrosion layer 10 and a silane grafted crosslinked high-density polyethylene outer sheath layer 11. In one embodiment, the semiconductive nylon belt inner wrapping layer 2 and the semiconductive nylon belt outer wrapping layer 4 are both semiconductive nylon belt multilayer overlapping wrapping structures and the overlap ratio is 20% to 35%. XLPE insulation layer 3 has a thickness of 4mm to 6mm. The aluminum foil layer 5 has a thickness of 30 μm to 55 μm. In one embodiment, the butyl rubber water-blocking decompression layer 8 is a butyl rubber tape multilayer lapping structure, and the butyl rubber tape lapping rate is one-fourth to one-half of the width of the butyl rubber tape. The anti-impact aluminum alloy wire plain net armor layer 9 comprises an inner layer aluminum alloy wire plain net and an outer layer aluminum alloy wire plain net, wherein the inner layer aluminum alloy wire plain net is a plain net structure formed by weaving fine aluminum alloy wires, the outer layer aluminum alloy wire plain net is a plain net structure formed by weaving coarse aluminum alloy wires, the wire diameter of the coarse aluminum alloy wires is 2 to 5 times of that of the fine aluminum alloy wires, and the braiding density of the inner layer aluminum alloy wire plain net is greater than that of the outer layer aluminum alloy wire plain net.
The present utility model has been described in terms of embodiments, and it will be appreciated by those of skill in the art that various changes can be made to the features and embodiments, or equivalents can be substituted, without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.
Claims (10)
1. Impact-resistant steel-cored aluminum stranded wire overhead cable is characterized by: including inner conductor (1) and cladding in proper order be in semi-conductive nylon tape inner cladding (2), XLPE insulating layer (3) outside inner conductor (1), semi-conductive nylon tape outer cladding (4), aluminium foil layer (5), ferrite film is around cladding (6), PET resin tape longitudinal wrapping inoxidizing coating (7), butyl rubber water-blocking decompression layer (8), shock resistance aluminium alloy wire plain weave net armor (9), nylon anticorrosive coating (10) and silane grafting crosslinked high density polyethylene oversheath layer (11), inner conductor (1) include galvanized steel strand inner core (12), a plurality of inlayer aluminium alloy fan-shaped conductors (13) are centers on galvanized steel strand inner core (12) outside transposition constitutes aluminium stranded conductor core inlayer, a plurality of outer aluminium alloy fan-shaped conductors (14) are centers on aluminium stranded conductor core inlayer outside transposition constitutes aluminium stranded conductor core skin, shock resistance aluminium alloy wire plain weave net armor (9) are inside and outside double-deck aluminium alloy wire plain weave net, inlayer aluminium alloy wire plain weave net is fine aluminium alloy wire plain weave net forming plain weave net structure, outer aluminium alloy wire plain weave net is that fine alloy wire plain weave wire diameter is the thick structure to 5 times aluminium alloy wire diameter.
2. The impact resistant steel-cored aluminum strand overhead cable of claim 1, wherein: the inner layer aluminum alloy fan-shaped conductor (13) and the outer layer aluminum alloy fan-shaped conductor (14) are formed by stranding a plurality of aluminum alloy wires and compressing the aluminum alloy wires into a fan-shaped conductor structure.
3. The impact resistant steel-cored aluminum strand overhead cable of claim 2, wherein: the diameter of the aluminum alloy wire is 1mm to 3mm.
4. The impact resistant steel-cored aluminum strand overhead cable of claim 1, wherein: the XLPE insulation layer (3) has a thickness of 4mm to 6mm.
5. The impact resistant steel-cored aluminum strand overhead cable of claim 1, wherein: the inner layer circumferential butt joint surfaces contacted between the adjacent inner layer aluminum alloy fan-shaped conductors (13) and the outer layer circumferential butt joint surfaces contacted between the adjacent outer layer aluminum alloy fan-shaped conductors (14) are circumferentially staggered.
6. The impact resistant steel-cored aluminum strand overhead cable of claim 1, wherein: the weaving density of the inner-layer aluminum alloy wire plain weave net is larger than that of the outer-layer aluminum alloy wire plain weave net.
7. The impact resistant steel-cored aluminum strand overhead cable of claim 1, wherein: the thickness of the aluminum foil layer (5) is 30 μm to 55 μm.
8. The impact resistant steel-cored aluminum strand overhead cable of claim 1, wherein: the galvanized steel strand inner core (12) is formed by stranding a plurality of galvanized steel wires with the wire diameters of 0.8mm to 2.2 mm.
9. The impact resistant steel-cored aluminum strand overhead cable of claim 1, wherein: the butyl rubber water-blocking decompression layer (8) is of a multi-layer covering and wrapping structure of a butyl rubber belt, and the covering rate of the butyl rubber belt is one fourth to one half of the width of the butyl rubber belt.
10. The impact resistant steel-cored aluminum strand overhead cable of claim 1, wherein: the semi-conductive nylon belt inner wrapping layer (2) and the semi-conductive nylon belt outer wrapping layer (4) are of a semi-conductive nylon belt multi-layer overlapping wrapping structure, and the lap coverage rate is 20-35%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320488655.2U CN219832228U (en) | 2023-03-15 | 2023-03-15 | Impact-resistant steel-cored aluminum stranded wire core overhead cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320488655.2U CN219832228U (en) | 2023-03-15 | 2023-03-15 | Impact-resistant steel-cored aluminum stranded wire core overhead cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219832228U true CN219832228U (en) | 2023-10-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320488655.2U Active CN219832228U (en) | 2023-03-15 | 2023-03-15 | Impact-resistant steel-cored aluminum stranded wire core overhead cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219832228U (en) |
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2023
- 2023-03-15 CN CN202320488655.2U patent/CN219832228U/en active Active
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