CN215007625U - Bending-resistant high-strength aerial insulated cable - Google Patents
Bending-resistant high-strength aerial insulated cable Download PDFInfo
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- CN215007625U CN215007625U CN202121753698.6U CN202121753698U CN215007625U CN 215007625 U CN215007625 U CN 215007625U CN 202121753698 U CN202121753698 U CN 202121753698U CN 215007625 U CN215007625 U CN 215007625U
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Abstract
The utility model discloses a resistant high strength aerial insulated cable of buckling, including arranging the enhancement core in cable structure, the enhancement core mainly by steel wire heart yearn and cladding in the outside many steel ladle composite carbon fiber line of steel wire heart yearn are constituteed, these steel ladle composite carbon fiber line with the steel wire heart yearn is arranged as the center the periphery of steel wire heart yearn. The utility model has the advantages that the tensile resistance is greatly increased, the weight is greatly reduced, the laying span can be effectively improved, and the economic benefit is remarkable; furthermore, the utility model discloses a resistant bending property is good, easily lays the construction operation.
Description
Technical Field
The utility model relates to a cable specifically is an aerial insulated cable of resistant buckling, high strength.
Background
The overhead insulated cables are arranged in aerial transmission occasions by using support structures such as towers and the like, for example, the overhead transmission insulated cables erected in the common suburb areas, the old urban areas and the like.
The tensile resistance of the overhead insulated cable determines the arrangement number of the support structures such as the towers, namely the overhead insulated cable with good tensile resistance has larger laying span, fewer tower support structures needing to be arranged and good economical efficiency. On the contrary, more pole tower supporting structures are needed, and the construction cost is increased.
In order to enhance the tensile strength of the overhead insulated cable, it is common practice to add steel wires as a reinforcing structure to the cable structure, for example, "an anticorrosive tensile overhead insulated cable" (publication No. CN 103474156, publication No. 12/25/2013), "a tensile overhead cable" (publication No. CN 209232459, publication No. 2019/08/09/2019), "a copper clad aluminum core tensile overhead cable" (publication No. CN 205406150, publication No. 2016/07/27/2016), and other technologies disclosed in chinese patent documents. The tensile strength of the technologies is in direct proportion to the adding quantity of the steel wires, if an overhead insulated cable with high tensile strength is obtained, the weight of the cable body is inevitably increased by the adding of a large quantity of the steel wires, the outer diameter of the cable body is also increased by the eccentric arrangement of the steel wires, and the improvement effect on the laying span is very little.
SUMMERY OF THE UTILITY MODEL
The technical purpose of the utility model is that: the technical defects of the particularity of the application working condition of the overhead insulated cable and the existing overhead insulated cable are overcome, and the overhead insulated cable which is high in tensile strength and bending resistant can be realized by light weight.
The technical scheme of the utility model realize, a resistant high strength aerial insulated cable that buckles through following technical scheme, including arranging the enhancement core in cable structure, the enhancement core mainly by steel wire heart yearn and cladding in the outside many steel ladle composite carbon fiber line of steel wire heart yearn are constituteed, these steel ladle composite carbon fiber line with the steel wire heart yearn is arranged as the center the periphery of steel wire heart yearn. Aiming at the particularity of the application working condition of the overhead insulated cable, the steel wire core wire and the steel ladle composite carbon fiber wires form the reinforcing core with a combined structure, compared with the overhead insulated cable with the same tensile strength and the single steel wire reinforcing structure, the weight of the unit length is reduced by about 25% in the same ratio, and compared with the overhead insulated cable with the same weight and the single steel wire reinforcing structure, the tensile strength is up to 2.5 times, so that the overhead insulated cable with the reinforcing core with the combined structure can bear greatly increased tensile strength and greatly reduced weight, the laying span can be effectively improved, the laying span can be increased by about 2 times according to the test, the corresponding use number of the tower pole supporting structure can be saved by 50%, and the economic benefit is obvious; in addition, the steel ladle composite carbon fiber wire adopted by the reinforcing core of the technical measure has stronger transverse shearing force resistance, good bending resistance, small bending radius and difficult fracture compared with a single composite carbon fiber wire, and the overhead insulated cable is easy to construct and operate during laying construction.
As one preferable scheme, the number of the steel ladle composite carbon fiber wires coated outside the steel wire core wire is 3-18, and the cross section outline of each steel ladle composite carbon fiber wire is in a fan shape. On one hand, the technical measure is easy to form a reinforcing core with a relatively complete circle and a compact structure, thereby being beneficial to the structure compactness of the overhead insulated cable; on the other hand, the tensile strength can be effectively enhanced.
As one preferable scheme, the steel ladle composite carbon fiber wire is coated outside the steel wire core wire in a twisted structure. Further, the stranding pitch diameter ratio of the steel ladle composite carbon fiber wire stranded and coated outside the steel wire core wire is 12-14 times. According to the technical measure, the steel ladle composite carbon fiber wires are stranded outside the steel wire core wires, particularly according to a specific pitch-diameter ratio, so that the overhead insulated cable has extension length compensation of an internal reinforcing core in a bending state (namely compensation is realized by peristaltic elasticity), the bending resistance and the transverse shearing resistance of the overhead insulated cable are effectively enhanced, and the laying construction operation is facilitated.
As one of the preferable schemes, the steel ladle composite carbon fiber wire mainly comprises a composite carbon fiber core wire and a steel cladding layer for cladding the composite carbon fiber core wire. Furthermore, the composite carbon fiber core wire is a single-strand structure formed by gluing a plurality of carbon fibers. The steel cladding is a longitudinal cladding structure of a stainless steel band, and the thickness of the stainless steel band is less than or equal to 0.25 mm. The technical measure forms effective protection for the glued composite carbon fiber core wire through the corrosion-resistant steel cladding, and improves the tensile strength and the bending resistance of the composite carbon fiber core wire.
As one of the preferable schemes, the reinforced core is arranged at the center of the cable, the outer part of the reinforced core is coated with a plurality of conductors in a twisted structure, and the outer part of the conductor twisted layer is coated with an insulating layer; this technical measure can make the extension length compensation maximize of strengthening the core when aerial insulated cable buckles to reduce aerial insulated cable's bending radius, difficult fracture easily the construction operation. Further, the number of conductors of the cable is at least 12, and the conductors are concentrically stranded into at least two layers outside the reinforcing core; each conductor is a round aluminum single-wire structure. The insulating layer is of an extruded structure of cross-linked polyolefin; the insulating layer is stably combined with the aluminum conductor, and the phenomenon of insulation cracking caused by uneven shrinkage of the matrix can be avoided when the insulating layer is thermally expanded and shrunk in the long-term operation process, so that the insulating property is good.
The utility model has the beneficial technical effects that: the technical measures aim at the particularity of the application working condition of the overhead insulated cable, the steel wire core wire and the steel ladle composite carbon fiber wires form the reinforcing core of the combined structure, compared with the overhead insulated cable with the same tensile strength of a single steel wire reinforcing structure, the weight of the unit length is reduced by about 25% in the same ratio, compared with the overhead insulated cable with the same weight of the single steel wire reinforcing structure, the tensile strength is up to 2.5 times, therefore, the overhead insulated cable with the reinforcing core of the combined structure has the advantages that the tensile strength is greatly increased, the weight is greatly reduced, the laying span can be effectively improved, the laying span can be increased by about 2 times according to the test, the using number of the tower pole supporting structures can be saved by 50% correspondingly, and the economic benefit is obvious; in addition, the steel ladle composite carbon fiber wire adopted by the reinforcing core of the technical measure has stronger transverse shearing force resistance, good bending resistance, small bending radius and difficult fracture compared with a single composite carbon fiber wire, and the overhead insulated cable is easy to construct and operate during laying construction. The utility model discloses an overhead insulated cable has the high-quality characteristic of the operation of doubly capacity to and have characteristics such as tensile strength height, sag are little, light in weight, can make the span increase between the shaft tower bearing structure, highly reduce, the cost of same capacity circuit is lower than conventional overhead insulated cable, and the economic nature is showing, can extensively be as in long distance overhead power transmission's the circuit.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a perspective view of the cable shown in fig. 1.
The reference numbers in the figures mean: 1-an insulating layer; 2-a conductor; 3-steel ladle composite carbon fiber wire; 31-composite carbon fiber core wire; 32-steel cladding; 4-steel wire core wire.
Detailed Description
The utility model relates to a cable specifically is a resistant overhead insulated cable who buckles, high strength, and is right with a plurality of embodiments below the utility model discloses a main part technical content carries out the detailed description. In the embodiment 1, the technical solution content of the present invention is clearly and specifically explained with reference to the drawings of the specification, i.e., fig. 1 and fig. 2; in other embodiments, although not separately depicted, the main structure of the embodiment can still refer to the drawings of embodiment 1.
It is expressly stated here that the drawings of the present invention are schematic, and unnecessary details have been simplified for the purpose of clarity in order to avoid obscuring the technical solutions that contribute to the prior art.
Example 1
Referring to fig. 1 and 2, the present invention includes a core, a conductor 2 coated outside the core, and an insulating layer 1 coated outside the conductor 2.
Wherein the strength core is arranged at the center of the entire cable. The reinforced core mainly comprises a steel wire core wire 4 and six steel ladle composite carbon fiber wires 3.
Specifically, the steel wire core wire 4 is a high-strength round steel wire, and the surface of the steel wire core wire is plated with a corrosion-resistant zinc layer structure.
The steel-clad composite carbon fiber wire 3 is mainly composed of a composite carbon fiber core wire 31 and a steel clad 32 covering the composite carbon fiber core wire 31. The composite carbon fiber core wire 31 is a single-strand structure formed by gluing a plurality of carbon fibers with epoxy resin. The steel cladding 32 is a corrosion-resistant stainless steel strip longitudinal cladding structure, the thickness of the selected stainless steel strip is about 0.2mm, and the joints of the longitudinal cladding stainless steel strip are continuously welded. The stainless steel band forms the fan-shaped structure that narrow, the wide and all takes the circular arc in outside in the cross-section to the compound carbon fiber heart yearn 31 cladding of veneer of ladle compound carbon fiber line 3 to die-casting mode formation, and the cross-sectional profile of ladle compound carbon fiber line 3 is fan-shaped promptly, and fan-shaped radian size should satisfy two points basically:
1. the inner arc of the steel ladle composite carbon fiber wire 3 basically corresponds to the outer contour radian of the steel wire core wire 4;
2. the six steel ladle composite carbon fiber wires 3 can be continuously assembled and spliced into a whole round structure around the steel wire core wire 4 in the annular direction.
The six steel ladle composite carbon fiber wires 3 with the structure are tightly coated outside the steel wire core wire 4 by using the steel wire core wire 4 as a center in a stranded structure, and the stranded pitch ratio of the steel ladle composite carbon fiber wires 3 stranded and coated outside the steel wire core wire 4 is about 13 times.
The conductor 2 is an aluminum single-wire structure, and the section of the conductor is circular; the conductors 2 are twenty-six in number. These conductors 2 are twisted concentrically around the reinforcing core into two layers, ten inner layers and sixteen outer layers.
The insulating layer 1 is a black and weather-resistant extruded structure of cross-linked polyolefin.
Example 2
The utility model discloses a strengthen the core, cladding in the outside conductor of strengthening the core and cladding in the outside insulating layer of conductor.
Wherein the strength core is arranged at the center of the entire cable. The reinforced core mainly comprises a steel wire core wire and four steel ladle composite carbon fiber wires.
Specifically, the steel wire core wire is a round steel wire, and the surface of the steel wire core wire is plated with a corrosion-resistant zinc layer structure.
The steel ladle composite carbon fiber wire mainly comprises a composite carbon fiber core wire and a steel cladding layer for cladding the composite carbon fiber core wire. The composite carbon fiber core wire is a single-strand structure formed by gluing a plurality of carbon fibers with epoxy resin. The steel cladding is a corrosion-resistant stainless steel band longitudinal cladding structure, the thickness of the selected stainless steel band is about 0.25mm, and the joints of the longitudinal cladding stainless steel band are continuously welded. The stainless steel band forms the compound carbon fiber line of ladle that the cladding of the compound carbon fiber heart yearn of veneer formed to the die-casting mode is the fan-shaped structure of interior limit narrow, the wide and all taking the circular arc of outside in the cross-section, and the cross-sectional profile of the compound carbon fiber line of ladle is fan-shaped promptly, and fan-shaped radian size should satisfy two points basically:
1. the inner arc of the steel ladle composite carbon fiber wire basically corresponds to the outer contour radian of the steel wire core wire;
2. four steel ladle composite carbon fiber wires can be annularly and continuously assembled and spliced into a whole round structure around the steel wire core wire.
The four steel ladle composite carbon fiber wires with the structure take the steel wire core wire as a center, are tightly wrapped outside the steel wire core wire by a twisted structure, and the twisted pitch ratio of the steel ladle composite carbon fiber wires twisted and wrapped outside the steel wire core wire is about 12.5 times.
The conductor is of an aluminum single-wire structure, and the section of the conductor is circular; the conductors are counted into eighteen. The conductors are stranded concentrically around the core to form two layers, seven inner layers and eleven outer layers.
The insulating layer is a black and weather-resistant extruded structure of cross-linked polyolefin.
Example 3
The utility model discloses a strengthen the core, cladding in the outside conductor of strengthening the core and cladding in the outside insulating layer of conductor.
Wherein the strength core is arranged at the center of the entire cable. The reinforced core mainly comprises a steel wire core wire and thirteen steel ladle composite carbon fiber wires.
Specifically, the steel wire core wire is a round steel wire, and the surface of the steel wire core wire is plated with a corrosion-resistant zinc layer structure.
The steel ladle composite carbon fiber wire mainly comprises a composite carbon fiber core wire and a steel cladding layer for cladding the composite carbon fiber core wire. The composite carbon fiber core wire is a single-strand structure formed by gluing a plurality of carbon fibers with epoxy resin. The steel cladding is a corrosion-resistant stainless steel band longitudinal cladding structure, the thickness of the selected stainless steel band is about 0.15mm, and the joints of the longitudinal cladding stainless steel band are continuously welded. The stainless steel band forms the compound carbon fiber line of ladle that the cladding of the compound carbon fiber heart yearn of veneer formed to the die-casting mode is the fan-shaped structure of interior limit narrow, the wide and all taking the circular arc of outside in the cross-section, and the cross-sectional profile of the compound carbon fiber line of ladle is fan-shaped promptly, and fan-shaped radian size should satisfy two points basically:
1. the inner arc of the steel ladle composite carbon fiber wire basically corresponds to the outer contour radian of the steel wire core wire;
2. thirteen ladle composite carbon fiber wires can be annularly and continuously assembled and spliced into a whole round structure around the steel wire core wire.
The thirteen steel ladle composite carbon fiber wires with the structure take the steel wire core wire as a center, tightly cover the outside of the steel wire core wire by a stranded structure, and the stranding pitch ratio of the steel ladle composite carbon fiber wires stranded and covered outside the steel wire core wire is about 14 times.
The conductor is of an aluminum single-wire structure, and the section of the conductor is circular; the conductors are forty in total. The conductors are stranded outside the reinforcing core in a concentric manner into three layers, seven inner layers, eleven middle layers and twenty two outer layers, with the reinforcing core as the center.
The insulating layer is a black and weather-resistant extruded structure of cross-linked polyolefin.
Example 4
The utility model discloses a strengthen the core, cladding in the outside conductor of strengthening the core and cladding in the outside insulating layer of conductor.
Wherein the strength core is arranged at the center of the entire cable. The reinforced core mainly comprises a steel wire core wire and eighteen steel ladle composite carbon fiber wires.
Specifically, the steel wire core wire is a round steel wire, and the surface of the steel wire core wire is plated with a corrosion-resistant zinc layer structure.
The steel ladle composite carbon fiber wire mainly comprises a composite carbon fiber core wire and a steel cladding layer for cladding the composite carbon fiber core wire. The composite carbon fiber core wire is a single-strand structure formed by gluing a plurality of carbon fibers with epoxy resin. The steel cladding is a corrosion-resistant stainless steel band longitudinal cladding structure, the thickness of the selected stainless steel band is about 0.2mm, and the joints of the longitudinal cladding stainless steel band are continuously welded. The stainless steel band forms the compound carbon fiber line of ladle that the cladding of the compound carbon fiber heart yearn of veneer formed to the die-casting mode is the fan-shaped structure of interior limit narrow, the wide and all taking the circular arc of outside in the cross-section, and the cross-sectional profile of the compound carbon fiber line of ladle is fan-shaped promptly, and fan-shaped radian size should satisfy two points basically:
1. the inner arc of the steel ladle composite carbon fiber wire basically corresponds to the outer contour radian of the steel wire core wire;
2. eighteen steel ladle composite carbon fiber wires can be continuously assembled and spliced into a whole round structure around the steel wire core wire in the circumferential direction.
Eighteen steel ladle composite carbon fiber wires with the structure take the steel wire core wire as a center, are tightly coated outside the steel wire core wire in a stranded structure, and the stranded pitch ratio of the steel ladle composite carbon fiber wires stranded and coated outside the steel wire core wire is about 12 times.
The conductor is of an aluminum single-wire structure, and the section of the conductor is circular; the conductors are forty in total. The conductors are stranded outside the reinforcing core in a concentric manner into three layers, seven inner layers, eleven middle layers and twenty two outer layers, with the reinforcing core as the center.
The insulating layer is a black and weather-resistant extruded structure of cross-linked polyolefin.
The above examples are only for illustrating the present invention and are not to be construed as limiting the same.
Although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that: it is still possible to modify the above-described embodiments or to equally replace some of the technical features, for example to arrange the reinforcing cores eccentrically in the cable structure, etc. (neither the bending resistance nor the tensile strength is as good as the central arrangement); and such modifications or substitutions do not depart from the spirit and scope of the present invention in its essence.
Claims (10)
1. The utility model provides a resistant high strength aerial insulated cable that buckles, includes the reinforcement core of arranging in cable structure, its characterized in that: the reinforced core mainly comprises a steel wire core wire (4) and a plurality of steel ladle composite carbon fiber wires (3) coated outside the steel wire core wire (4), and the steel ladle composite carbon fiber wires (3) are distributed on the periphery of the steel wire core wire (4) by taking the steel wire core wire (4) as the center.
2. The bending-resistant high-strength aerial insulated cable according to claim 1, characterized in that: the number of the steel ladle composite carbon fiber wires (3) coated outside the steel wire core wire (4) is 3-18, and the cross section outline of each steel ladle composite carbon fiber wire (3) is fan-shaped.
3. The bending-resistant high-strength aerial insulated cable according to claim 1 or 2, characterized in that: the steel ladle composite carbon fiber wire (3) is coated outside the steel wire core wire (4) in a stranded structure.
4. The bending-resistant high-strength aerial insulated cable according to claim 3, characterized in that: the steel ladle composite carbon fiber wire (3) is stranded and coated outside the steel wire core wire (4) with a stranding pitch diameter ratio of 12-14 times.
5. The bending-resistant high-strength aerial insulated cable according to claim 1 or 2, characterized in that: the steel ladle composite carbon fiber wire (3) mainly comprises a composite carbon fiber core wire (31) and a steel cladding (32) for cladding the composite carbon fiber core wire (31).
6. The bending-resistant high-strength aerial insulated cable according to claim 5, characterized in that: the composite carbon fiber core wire (31) is of a single-strand structure formed by gluing a plurality of carbon fibers.
7. The bending-resistant high-strength aerial insulated cable according to claim 5, characterized in that: the steel cladding (32) is a longitudinal cladding structure of a stainless steel band, and the thickness of the stainless steel band is less than or equal to 0.25 mm.
8. The bending-resistant high-strength aerial insulated cable according to claim 1, characterized in that: the reinforced core is arranged at the center of the cable, the outer part of the reinforced core is coated with a plurality of conductors (2) in a twisted structure, and the outer part of the conductor twisted layer is coated with an insulating layer (1).
9. The bending-resistant high-strength aerial insulated cable according to claim 8, characterized in that: the number of conductors (2) of the cable is at least 12, and the conductors (2) are concentrically twisted into at least two layers outside the reinforcing core; each conductor (2) is of a round aluminum single-wire structure.
10. The bending-resistant high-strength aerial insulated cable according to claim 8, characterized in that: the insulating layer (1) is of an extruded structure of cross-linked polyolefin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121753698.6U CN215007625U (en) | 2021-07-30 | 2021-07-30 | Bending-resistant high-strength aerial insulated cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121753698.6U CN215007625U (en) | 2021-07-30 | 2021-07-30 | Bending-resistant high-strength aerial insulated cable |
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| Publication Number | Publication Date |
|---|---|
| CN215007625U true CN215007625U (en) | 2021-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121753698.6U Active CN215007625U (en) | 2021-07-30 | 2021-07-30 | Bending-resistant high-strength aerial insulated cable |
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| CN (1) | CN215007625U (en) |
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- 2021-07-30 CN CN202121753698.6U patent/CN215007625U/en active Active
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Address after: 621000 No. 89, south section of kekecheng Avenue, high tech Zone, Mianyang City, Sichuan Province Patentee after: SICHUAN JIUZHOU WIRE AND CABLE Co.,Ltd. Address before: 621000 No.9, middle section of Kefa Avenue, Fucheng District, Mianyang City, Sichuan Province Patentee before: SICHUAN JIUZHOU WIRE AND CABLE Co.,Ltd. |