CN217468009U - Aluminum alloy stranded wire with large span and high strength - Google Patents
Aluminum alloy stranded wire with large span and high strength Download PDFInfo
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- CN217468009U CN217468009U CN202122969600.7U CN202122969600U CN217468009U CN 217468009 U CN217468009 U CN 217468009U CN 202122969600 U CN202122969600 U CN 202122969600U CN 217468009 U CN217468009 U CN 217468009U
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Abstract
The utility model relates to the technical field of power transmission manufacturing, in particular to a large-span high-strength aluminum alloy stranded wire, which adopts an extra-high-strength galvanized steel stranded wire as a reinforcing core, wherein an aluminum alloy wire is twisted outside the reinforcing core to serve as an inner conductive twisted layer, a reinforcing twisted layer is twisted outside the inner conductive twisted layer, and two or more than two outer conductive twisted layers are twisted outside the reinforcing twisted layer; the inner conductive twisted layer is of a spiral twisted structure with two or more layers, the reinforcing twisted layer is of a spiral twisted structure with one or two layers, the diameter of an aluminum alloy wire of the inner conductive twisted layer is the same as that of a single wire of the extra-high-strength galvanized steel strand, the rated breaking force and the anti-fatigue property of the wire are improved on the premise that the smaller outer diameter of the wire is met, the use safety of the wire is improved, and the service life of the wire is prolonged, so that the wire is suitable for power transmission in large-span scenes and other scenes needing large rated breaking force in power transmission lines.
Description
Technical Field
The utility model relates to a power transmission makes technical field, in particular to stride across aluminum alloy stranded conductor of high strength greatly.
Background
In power transmission line engineering, obstacles such as highways and railways and topographic environments such as rivers and canyons are often required to be crossed, and when the construction environments are faced, construction stringing is carried out by adopting a large span, so that a large-crossing wire is required.
The large-span lead needs to have higher safety factor and high rated breaking force requirement. Current cables are generally not able to meet the need for such large spans.
In the large-span project across amazon river accepted by the company, the adopted cable belongs to one of large-span terrain environments, and the required cable meets the basic requirements of the large-span cable.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a stride across high strength's aluminum alloy stranded conductor greatly for solve the present common great transmission line that is used for strideing across range.
The utility model provides a technical scheme that its technical problem adopted is:
an aluminum alloy stranded wire with large span and high strength is characterized in that an extra-high strength galvanized steel stranded wire is used as a reinforcing core, an aluminum alloy wire prepared from an aluminum-magnesium-silicon alloy is stranded outside the reinforcing core to serve as an inner conductive stranded layer, a reinforcing stranded layer prepared from an extra-high strength galvanized steel stranded wire single wire is stranded outside the inner conductive stranded layer, and two or more than two outer conductive stranded layers prepared from aluminum-magnesium-silicon alloy are stranded outside the reinforcing stranded layer; the inner conductive twisted layer is of a spiral twisted structure with two or more layers, the reinforcing twisted layer adopts one or two layers of spiral twisted structures, and the diameter of an aluminum alloy wire of the inner conductive twisted layer is the same as that of a single wire of the extra-high-strength galvanized steel strand.
The common steel-cored aluminum alloy stranded wire adopts the reinforcing core as the steel core, and the electric conduction is the aluminum alloy stranded wire, in the scheme, a reinforcing layer is particularly arranged between the aluminum alloy wires, so that the rated breaking force of the wires is improved, the use safety of the wires is improved, the anti-fatigue property is improved, and the service life is prolonged on the premise of meeting the requirement of smaller outer diameter of the wires as much as possible.
Preferably, the aluminum alloy wire of the outer conductive twisted layer is a special-shaped wire with a trapezoidal section.
Preferably, the thickness of the single layer of the outer conductive stranded layer is two times or more than two times of the diameter of the aluminum alloy wire of the inner conductive stranded layer.
Preferably, the aluminum alloy wire of the outer conductive twisted layer is a circular wire, and the diameter of the aluminum alloy wire of the outer conductive twisted layer is 1.5 times or more than 1.5 times that of the aluminum alloy wire of the inner conductive twisted layer.
Preferably, the reinforcing core is of a three-layer or four-layer structure, and the number of the extra-high-strength galvanized steel strand single wires from inside to outside is 1, 6, 12 or 18.
Preferably, the minimum tensile strength of the inner conductive twisted layer before single twisting is 325 MPa.
Preferably, the reinforcing core has a 1% elongation stress of 1670MPa or more and a tensile strength of 1910MPa or more.
The utility model has the advantages that:
on the premise of meeting the requirement of a smaller outer diameter of the wire, the rated breaking force of the wire is improved, the use safety of the wire is improved, the anti-fatigue property is improved, and the service life is prolonged;
the circuit has better sag characteristics, and the reliability of safe operation of the circuit is improved;
the method is suitable for power transmission in large-span scenes and other scenes needing large rated breaking force in power transmission lines.
Drawings
Fig. 1 shows a schematic structural diagram of the present invention.
Fig. 2 shows another schematic structure of the present invention.
In the figure: 1 reinforcing core, 2 interior conductive stranding layers, 3 reinforcing stranding layers and 4 outer conductive stranding layers.
Detailed Description
Further refinements will now be made on the basis of the representative embodiments shown in the figures, and in which reference is made to the accompanying drawings which form a part of the description, in which specific embodiments according to said embodiments are shown by way of illustration.
An aluminum alloy stranded wire with large span and high strength is shown in figures 1 and 2, adopts a steel core, and is suitable for power transmission in large span scenes and other scenes requiring large rated breaking force in power transmission lines.
Specifically, the aluminum alloy stranded wire adopts an extra-high strength galvanized steel stranded wire as a reinforcing core, the 1% elongation stress of the reinforcing core is more than or equal to 1670MPa, and the tensile strength is more than or equal to 1910 MPa. The reinforcing core is of a three-layer or four-layer structure, and the number of the extra-high-strength galvanized steel strand single wires from inside to outside is 1, 6, 12 or 18.
The reinforced core is externally twisted with an aluminum alloy wire prepared by aluminum-magnesium-silicon alloy as an inner conductive twisted layer, and the inner conductive twisted layer has a spiral twisted structure with two or more layers. The diameter of the aluminum alloy wire of the inner conductive stranding layer is the same as that of the ultrahigh-strength galvanized steel strand single wire. The minimum tensile strength of the inner conductive twisted layer before single-wire twisting is 325 MPa.
A reinforced twisted layer which adopts a single wire of the extra-high strength galvanized steel strand is twisted outside the inner conductive twisted layer, and the reinforced twisted layer adopts a one-layer or two-layer spiral twisted structure;
two or more than two outer conductive twisted layers of aluminum alloy wires prepared by aluminum-magnesium-silicon alloy are twisted outside the reinforcing twisted layer;
as shown in fig. 1, the aluminum alloy wire of the outer conductive twisted layer is a special-shaped wire with a trapezoidal cross section, and the thickness of the single layer of the outer conductive twisted layer is 1.5 times or more than 1.5 times of the diameter of the aluminum alloy wire of the inner conductive twisted layer.
As shown in fig. 2, the aluminum alloy wire of the outer conductive twisted layer is a circular wire, and the aluminum alloy wire of the outer conductive twisted layer is 1.5 times or more than 1.5 times of the diameter of the aluminum alloy wire of the inner conductive twisted layer.
The aluminum alloy stranded wire can improve the rated breaking force of the wire, improve the use safety of the wire, improve the anti-fatigue property and prolong the service life on the premise of meeting the requirement of smaller outer diameter of the wire; the circuit has better sag characteristics, and the reliability of safe operation of the circuit is improved; the method is suitable for power transmission in large-span scenes and other scenes needing large rated breaking force in power transmission lines.
For purposes of explanation, specific nomenclature is used in the above description to provide a thorough understanding of the described embodiments. It will be apparent, however, to one skilled in the art that certain modifications, combinations, and variations are possible in light of the above teachings.
Claims (6)
1. The utility model provides a stride across aluminum alloy stranded conductor of high strength greatly which characterized in that: the aluminum alloy stranded wire adopts an ultrahigh-strength galvanized steel stranded wire as a reinforcing core, an aluminum alloy wire prepared from an aluminum-magnesium-silicon alloy is stranded outside the reinforcing core to serve as an inner conductive stranded layer, a reinforcing stranded layer prepared from an ultrahigh-strength galvanized steel stranded wire single wire is stranded outside the inner conductive stranded layer, and two or more than two outer conductive stranded layers of the aluminum alloy wire prepared from the aluminum-magnesium-silicon alloy are stranded outside the reinforcing stranded layer; the inner conductive twisted layer is of a spiral twisted structure with two or more layers, the reinforcing twisted layer adopts one or two layers of spiral twisted structures, and the diameter of an aluminum alloy wire of the inner conductive twisted layer is the same as that of a single wire of the extra-high-strength galvanized steel strand.
2. The aluminum alloy stranded wire with large span and high strength as claimed in claim 1, wherein: the thickness of the single layer of the outer conductive twisted layer is more than 1.5 times of the diameter of the aluminum alloy wire of the inner conductive twisted layer.
3. The aluminum alloy stranded wire with large span and high strength as claimed in claim 1, wherein: the aluminum alloy wire on outer electrically conductive transposition layer is circular line, and the aluminum alloy wire on outer electrically conductive transposition layer is more than 1.5 times of interior electrically conductive transposition layer aluminum alloy wire diameter.
4. The aluminum alloy stranded wire with large span and high strength as claimed in claim 1, wherein: the reinforcing core is of a three-layer or four-layer structure, and the number of the extra-high-strength galvanized steel strand single wires from inside to outside is 1, 6, 12 or 18.
5. The aluminum alloy stranded wire with large span and high strength as claimed in claim 1, wherein: the minimum tensile strength of the inner conductive twisted layer before single-wire twisting is 325 MPa.
6. The aluminum alloy stranded wire with large span and high strength as claimed in claim 1, wherein: the 1% elongation stress of the reinforced core is more than or equal to 1670MPa, and the tensile strength is more than or equal to 1910 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122969600.7U CN217468009U (en) | 2021-11-30 | 2021-11-30 | Aluminum alloy stranded wire with large span and high strength |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122969600.7U CN217468009U (en) | 2021-11-30 | 2021-11-30 | Aluminum alloy stranded wire with large span and high strength |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217468009U true CN217468009U (en) | 2022-09-20 |
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| CN202122969600.7U Active CN217468009U (en) | 2021-11-30 | 2021-11-30 | Aluminum alloy stranded wire with large span and high strength |
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| Country | Link |
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| CN (1) | CN217468009U (en) |
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2021
- 2021-11-30 CN CN202122969600.7U patent/CN217468009U/en active Active
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