CN219958628U - Self-damping type ultra-high strength steel core expanded diameter stranded wire and high-altitude erection cable - Google Patents
Self-damping type ultra-high strength steel core expanded diameter stranded wire and high-altitude erection cable Download PDFInfo
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- CN219958628U CN219958628U CN202320988589.5U CN202320988589U CN219958628U CN 219958628 U CN219958628 U CN 219958628U CN 202320988589 U CN202320988589 U CN 202320988589U CN 219958628 U CN219958628 U CN 219958628U
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- strength steel
- steel core
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- 229910000797 Ultra-high-strength steel Inorganic materials 0.000 title claims abstract description 16
- 238000013016 damping Methods 0.000 title claims abstract description 14
- 239000004020 conductor Substances 0.000 claims abstract description 78
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 25
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 23
- 230000002787 reinforcement Effects 0.000 claims abstract description 21
- 238000005260 corrosion Methods 0.000 claims description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000004519 grease Substances 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 230000007797 corrosion Effects 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 3
- 150000002910 rare earth metals Chemical class 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002500 effect on skin Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 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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- Non-Insulated Conductors (AREA)
Abstract
The utility model relates to a self-damping ultra-high strength steel core expanded diameter stranded wire and an overhead cable, comprising: a center reinforcement including a plurality of concentrically stranded reinforcement cores, a first conductor layer and a second conductor layer; the first conductor layer comprises a plurality of hollow flat wires which are stranded concentrically, and the hollow flat wires are stranded with each other at the outer side of the central reinforcing piece; a filling layer is arranged between the first conductor layer and the central reinforcing piece; the second conductor layer comprises a plurality of concentrically stranded aluminum alloy molded lines, and the plurality of aluminum alloy molded lines are stranded on the outer side of the first conductor layer. According to the utility model, the filling layer is arranged between the first conductor layer and the inner central reinforcing piece, so that the first conductor layer is prevented from being in direct contact with the central reinforcing piece, and the anti-seismic performance of the first conductor layer can be improved; the second conductor layer is different from the natural frequency of the central reinforcing piece, so that the anti-seismic performance of the whole wire harness can be improved, the accident frequencies of broken wires, broken strands and the like caused by breeze vibration are reduced, and the service life of the wire is prolonged.
Description
Technical Field
The utility model relates to the technical field of overhead line structures, in particular to a self-damping ultra-high strength steel core expanded diameter stranded wire and an overhead cable.
Background
The ultra-high voltage transmission is at the high end of ultra-large scale power transmission system engineering, the ultra-high voltage engineering aims at building an environment-friendly engineering, aims at comprehensively optimizing the design scheme of the engineering, and strictly ensures that the electric field, magnetic field, audible noise and radio interference level meet the standard requirements. One of the measures for saving the line profile land is that the power transmission line adopts a V-shaped insulator string, so that the disassembly and the engineering cost can be reduced, and the economic benefit is obvious, but the adoption of the V-shaped insulator string can deteriorate the electromagnetic environment of the power transmission line. Therefore, if the power transmission line adopts a common wire, the section of the wire needs to be enlarged, the number of split wires needs to be increased, the use amount of the wire, the structural size and weight of the iron tower and the like are increased, and the engineering investment is increased. The use of expanded wire is one of the common solutions.
The existing expanded diameter conductors are high-density polyethylene supported expanded diameter overhead conductors, bundle-stranded expanded diameter conductors, aluminum tube supported expanded diameter conductors and the like. The sag is large. The self-damping characteristics are weak or even not, the vibration of the overhead conductor caused by breeze in the daily use process of the line is very common, the fatigue and strand breakage of the conductor are easily caused by frequent breeze vibration, and even the whole conductor is broken in severe cases.
Disclosure of Invention
Therefore, the utility model aims to solve the technical problems that the self-damping characteristic of the expanded diameter wire is poor, and the wire harness is broken due to the influence of breeze vibration after high-altitude erection.
In order to solve the technical problems, the utility model provides a self-damping ultra-high strength steel core expanded diameter stranded wire, which comprises the following components: a center reinforcement, a first conductor layer, and a second conductor layer;
a central reinforcement comprising a plurality of concentrically stranded reinforcement cores;
the first conductor layer comprises a plurality of hollow flat wires which are stranded concentrically, and the hollow flat wires are stranded on the outer side of the central reinforcing piece; a filling layer is arranged between the first conductor layer and the central reinforcing piece;
the second conductor layer comprises a plurality of concentrically stranded aluminum alloy molded lines, and the aluminum alloy molded lines are stranded on the outer side of the first conductor layer.
In one embodiment of the utility model, the filling layer is a high temperature resistant and corrosion resistant grease.
In one embodiment of the utility model, the high temperature resistant antiseptic grease drop point is greater than or equal to 300 ℃.
In one embodiment of the present utility model, the external shape of the hollow flat wire is a trapezoid or a sector, and the hollow structure inside the hollow flat wire is similar to the external shape of the hollow flat wire.
In one embodiment of the utility model, the aluminum alloy profile is an S-profile or SZ-profile structure.
In one embodiment of the utility model, at least one of the first conductor layers is wrapped around the outside of the central reinforcement and at least one of the second conductor layers is wrapped around the outside of the first conductor layer.
In one embodiment of the utility model, the material of the reinforcing core is a zinc-5% aluminum-mixed rare earth alloy coating ultra-high strength steel core.
In one embodiment of the utility model, the hollow flat wire and the aluminum alloy profile are both made of 61.8% iacs super heat resistant aluminum alloy.
In one embodiment of the utility model, the twisting direction of the hollow flat wire is left, and the twisting direction of the aluminum alloy wire is right.
A high-altitude erection cable comprises the self-damping ultra-high strength steel core expanded diameter stranded wire.
Compared with the prior art, the technical scheme of the utility model has the following advantages:
according to the self-damping type ultra-high strength steel core expanded diameter stranded wire and the overhead cable, the filling layer is arranged between the first conductor layer and the inner central reinforcing piece, so that the first conductor layer is prevented from being in direct contact with the central reinforcing piece, and the anti-seismic performance of the first conductor layer can be improved; the second conductor layer is different from the natural frequency of the central reinforcing piece, so that the anti-seismic performance of the whole wire harness can be improved, the accident frequencies of broken wires, broken strands and the like caused by breeze vibration are reduced, and the service life of the wire is prolonged.
Drawings
In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings, in which
FIG. 1 is a schematic diagram of the self-damping ultra-high strength steel core expanded diameter strand of the present utility model;
FIG. 2 is a schematic diagram of a second embodiment of the present utility model;
FIG. 3 is a schematic view of another embodiment of the present utility model;
description of the specification reference numerals: 1. a central reinforcement; 2. a first conductor layer; 3. a second conductor layer: 3. and (5) a filling layer.
Detailed Description
The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the utility model and practice it.
Embodiment one:
referring to FIG. 1, the utility model discloses a self-damping ultra-high strength steel core expanded diameter stranded wire, which comprises the following components: a central reinforcement 1, a first conductor layer 2 and a second conductor layer 3;
a center reinforcement 1, the center reinforcement 1 including a plurality of concentrically stranded reinforcement cores;
the first conductor layer 2 comprises a plurality of hollow flat wires which are stranded concentrically, and the hollow flat wires are stranded on the outer side of the central reinforcement 1; and a filling layer 4 is arranged between the first conductor layer 2 and the central reinforcement 1;
the second conductor layer 3, the second conductor layer 3 includes a plurality of concentric stranded aluminum alloy molded lines, and a plurality of aluminum alloy molded lines are stranded outside the first conductor layer 2.
It can be seen that the structure of the expanded diameter stranded wire of the utility model is that: the central reinforcement 1, the first conductor layer 2 and the second conductor layer 3, wherein the central reinforcement 1 mainly bears the tensile force in the laying process, the structure is a plurality of concentrically stranded reinforcing cores, the first conductor layer 2 is a plurality of concentrically stranded hollow flat wires, and the second conductor layer 3 is a plurality of concentrically stranded aluminum alloy line structures; firstly, the filling layer 4 is arranged between the first conductor layer 2 and the inner central reinforcement 1, so that the first conductor layer 2 is prevented from being in direct contact with the central reinforcement 1, and the anti-seismic performance of the first conductor layer 2 can be improved. And secondly, due to the fact that the natural frequency of the second conductor layer 3 is different from that of the central reinforcing piece 1, the anti-seismic performance of the whole wire harness can be improved, accident frequencies such as broken wires and broken strands caused by breeze vibration are reduced, and the service life of the wire is prolonged.
The structure of the utility model can solve the accidents of broken wires, broken strands and the like caused by breeze vibration, improve the tensile property of the whole wire harness and prolong the service life of the whole expanded diameter stranded wire.
Further, the filling layer 4 is high-temperature-resistant and anti-corrosion grease, and the high-temperature-resistant and anti-corrosion grease not only can play a role in isolating the first conductor layer 2 from the central reinforcing piece 1, but also has good lubricity and oxidation stability; and secondly, the high-temperature-resistant anti-corrosion grease has good anti-corrosion performance, and can effectively reduce oxidation and corrosion of corrosive liquid and gas in the air such as rainwater, salt fog, ozone, industrial waste gas and the like on the lead.
Further, as the first conductor layer 2 and the second conductor layer 3 can reach 210 ℃ for long-term use due to current-carrying capacity in the use process, the high-temperature-resistant anti-corrosion grease does not lose efficacy in the use process, and the dropping point of the high-temperature-resistant anti-corrosion grease is more than or equal to 300 ℃ in order to ensure the use effect of the high-temperature-resistant anti-corrosion grease.
Further, at least one first conductor layer 2 is wrapped around the outside of the central reinforcement 1, and at least one second conductor layer 3 is wrapped around the outside of the first conductor layer 2. Specifically, after determining the optimal outer diameter of the wire-type design, the appropriate single wire size can be designed by adjusting the number of strands of the first conductor layer 2 and the second conductor layer 3.
As the preferable scheme of the utility model, the material of the reinforcing core is a zinc-5% aluminum-mixed rare earth alloy coating ultra-high strength steel core; specifically, the zinc-5% aluminum-mixed plating layer ultra-high strength steel wire with high corrosion resistance has the performances of tensile strength, 1% elongation stress, zinc layer weight and the like which are equal to those of the G5A steel wire in the GB/T3428-2012 standard.
Further, as a preferable scheme of the utility model, the hollow flat wire and the aluminum alloy molded line are made of 61.8 percent IACS super heat-resistant aluminum alloy; the electric conductivity of the aluminum alloy wire is greater than or equal to 61.8% IACS, and the tensile strength is not lower than that of an electrician round aluminum wire with the same effective section, namely, the current carrying capacity of the hollow flat wire and the aluminum alloy wire is larger under the same cross section.
Further, in order to improve the tightness and stability of the twisting of the first conductor layer 2 and the second conductor layer 3, the twisting direction of the hollow flat wire is left, and the twisting direction of the aluminum alloy molded wire is right, so that the loosening of the whole twisted wire is avoided.
Embodiment two:
further, as another embodiment of the present utility model: in order to facilitate the formation of the first conductor layer 2, the external structure of the hollow flat wire is trapezoidal or fan-shaped, and a plurality of hollow flat wires are easy to form a cylinder shape in the stranding process, so that gaps among the hollow flat wires are reduced. And the hollow structure inside the hollow flat wire is similar to the appearance structure of the hollow flat wire, and the first conductor layer 2 adopts the hollow flat wire structure, so that the unit weight of the first conductor layer 2 can be reduced, and the sag of the whole cable can be reduced in the erection process.
Comparing fig. 2 and fig. 3, after determining the optimal outer diameter of the wire harness type design, the aspect ratio and the number of strands of the hollow flat wire of the first conductor layer 2 can be adjusted to design a proper single wire size, so that less aluminum material is used to produce a wire meeting the requirements of large section and low single weight under the condition of meeting the current carrying capability; the requirements of power transmission and corona of the line are met, the skin effect of the wires used in alternating current engineering is reduced, and the worse electromagnetic environment is born.
Further, as a preferable scheme of the utility model, the aluminum alloy molded line is an S-shaped line or an SZ-shaped line structure; specifically, in the twisting process, the S-shaped line or the SZ-shaped line is meshed with each other between two adjacent wire bundles, so that the tightness after twisting is improved. And the surface is smooth when the wire harness is stranded on the outermost side of the whole wire harness.
Embodiment III:
a high-altitude erection cable comprises a self-damping ultra-high strength steel core expanded diameter stranded wire.
In summary, the utility model introduces a self-damping ultra-high strength steel core expanded diameter stranded wire and a high-altitude erection cable, which comprise a central reinforcing piece 1, a first conductor layer 2 and a second conductor layer 3, wherein the central reinforcing piece 1 is a bearing reinforcing core formed by concentrically stranding zinc-5% aluminum-mixed plating steel wires, a plurality of first conductor layers 2 consisting of a plurality of 61.8% IACS electric conductivity hollow flat wire section super heat-resistant aluminum alloy wires are concentrically stranded outside the reinforcing core, high-temperature-resistant anti-corrosion grease is filled between the first conductor layer 2 and the central reinforcing piece 1, and at least one second conductor layer 3 consisting of a plurality of 61.8% IACS electric conductivity super heat-resistant aluminum alloy wires is concentrically stranded on the first conductor layer 2. The first conductor layer 2 and the second conductor layer 3 are different from the natural frequency of the inner central reinforcement 1, so that accidents such as broken wires and broken strands caused by breeze vibration can be solved, the tensile property of the whole wire harness is improved, and the service life of the whole expanded stranded wire is prolonged; secondly, the hollow flat wire structure can reduce the unit mass of the first conductor layer 2 and reduce sag of the whole wire harness in the erection process; finally, the proper single wire size can be designed by adjusting the aspect ratio and the twisting number of the hollow flat wire, fewer aluminum materials are used for producing the wire which meets the requirements of large cross section and low single weight, the wire is subjected to poorer electromagnetic environment, and the skin effect of the wire used in alternating current engineering is reduced.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present utility model will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.
Claims (10)
1. The utility model provides a from damping formula extra-high strength steel core expanded diameter stranded conductor which characterized in that includes:
a central reinforcement comprising a plurality of concentrically stranded reinforcement cores;
the first conductor layer comprises a plurality of hollow flat wires which are stranded concentrically, and the hollow flat wires are stranded on the outer side of the central reinforcing piece; a filling layer is arranged between the first conductor layer and the central reinforcing piece;
the second conductor layer comprises a plurality of concentrically stranded aluminum alloy molded lines, and the aluminum alloy molded lines are stranded on the outer side of the first conductor layer.
2. The self-damped extra-high strength steel core expanded diameter strand according to claim 1, wherein: the filling layer is high-temperature-resistant and corrosion-resistant grease.
3. The self-damped extra-high strength steel core expanded diameter strand according to claim 2, wherein: the dropping point of the high-temperature-resistant anti-corrosion grease is more than or equal to 300 ℃.
4. The self-damped extra-high strength steel core expanded diameter strand according to claim 1, wherein: the appearance structure of the hollow flat wire is trapezoid or fan-shaped, and the hollow structure inside the hollow flat wire is similar to the appearance structure of the hollow flat wire.
5. The self-damped extra-high strength steel core expanded diameter strand according to claim 1, wherein: the aluminum alloy molded lines are S-shaped molded lines or SZ-shaped molded line structures.
6. The self-damped extra-high strength steel core expanded diameter strand according to claim 1, wherein: at least one layer of the first conductor layer is coated on the outer side of the central reinforcing piece, and at least one layer of the second conductor layer is coated on the outer side of the first conductor layer.
7. The self-damped extra-high strength steel core expanded diameter strand according to claim 1, wherein: the reinforced core is made of a zinc-5% aluminum-mixed rare earth alloy coating ultrahigh strength steel core.
8. The self-damped extra-high strength steel core expanded diameter strand according to claim 1, wherein: the hollow flat wire and the aluminum alloy molded line are made of 61.8% IACS super heat-resistant aluminum alloy.
9. The self-damped extra-high strength steel core expanded diameter strand according to claim 1, wherein: the twisting direction of the hollow flat wire is left, and the twisting direction of the aluminum alloy molded wire is right.
10. An overhead cable comprising the self-damped ultra-high strength steel core expanded strand of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320988589.5U CN219958628U (en) | 2023-04-27 | 2023-04-27 | Self-damping type ultra-high strength steel core expanded diameter stranded wire and high-altitude erection cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320988589.5U CN219958628U (en) | 2023-04-27 | 2023-04-27 | Self-damping type ultra-high strength steel core expanded diameter stranded wire and high-altitude erection cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219958628U true CN219958628U (en) | 2023-11-03 |
Family
ID=88552755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320988589.5U Active CN219958628U (en) | 2023-04-27 | 2023-04-27 | Self-damping type ultra-high strength steel core expanded diameter stranded wire and high-altitude erection cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219958628U (en) |
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2023
- 2023-04-27 CN CN202320988589.5U patent/CN219958628U/en active Active
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