CN102969041A - Copper-clad-steel concentric stranded wire - Google Patents
Copper-clad-steel concentric stranded wire Download PDFInfo
- Publication number
- CN102969041A CN102969041A CN 201210483260 CN201210483260A CN102969041A CN 102969041 A CN102969041 A CN 102969041A CN 201210483260 CN201210483260 CN 201210483260 CN 201210483260 A CN201210483260 A CN 201210483260A CN 102969041 A CN102969041 A CN 102969041A
- Authority
- CN
- China
- Prior art keywords
- copper
- stranded wire
- strands
- clad
- copper covered
- 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.)
- Pending
Links
Images
Landscapes
- Non-Insulated Conductors (AREA)
Abstract
The invention relates to a copper-clad-steel concentric stranded wire, and particularly belongs to a copper-clad-steel concentric stranded wire for electric power engineering. The stranded wire is made of hard-state or ultra-hard-state (30H, 30TH or 40H) copper-clad-steel single wires of which the relative electric conductivity is 30% IACS (international annealed copper standard) or 40% IACS, and can be prepared from 3 strands, 7 strands or 19 strands of wires in a concentric stranding manner according to the carrying capacity or the direct current resistance demanded by the stranded wire. The copper-clad-steel concentric stranded wire has the characteristics of good flexibility, high strength and high carrying capacity, is cheaper than a hard copper stranded wire or a copper alloy stranded wire, and can be widely applied to an overhead conductor, a carrier cable of an overhead line system of an electrified railway or urban rail transit, a lightning conductor of a tall building, a ground lead of an electric device and the like.
Description
Technical field
The invention belongs to metal material field, relate to a kind of twisted wire by circular copper covered steel wire concentric stranding for power engineering.
Background technology
Copper covered steel wire is the double metallic composite material that the high strength bond with the good electric conductivity of copper, corrosion resistance and steel is integrated.When using in power engineering, tend to run into such situation: when selecting thinner copper covered steel single line, ampacity does not satisfy requirement, or the poor-performings such as bearing capacity, fatigue strength; When selecting thicker copper covered steel single line, then flexibility is relatively poor, is difficult to flexural deformation, is not easy to cable processing and use.In this case, some copper covered steel single lines can be twisted together and make the copper covered steel twisted wire, then both improve ampacity, bearing capacity and fatigue strength, have again preferably flexibility.The present invention provides the twisted wire of many same diameter copper covered steels of a kind of usefulness single line concentric stranding for this reason.This twisted wire has the characteristic that flexibility is good, intensity is high, ampacity is large, and cost ratio hard drawn copper strand wire or copper-alloy stranded conductor are cheap.Be widely used in the carrier cable of aerial condutor, electric railway and urban rail transit contact network, the lightning conducter of high-lager building, electrical equipment earth connection etc.
Summary of the invention
The present invention provides a kind of copper covered steel concentric lay conductor in order to solve the problems of the technologies described above.
A kind of copper covered steel concentric lay conductor, regulation according to electron trade standard SJ/T11411-2010 " copper covered steel wire ", selecting relative conductance is hard attitude (H) or ultrahard attitude (TH) the copper covered steel single line of 30%IACS or 40%IACS, and its classification is 30H, 30TH or 40H.
Among the present invention, line diameter is φ 2.0mm～φ 4.5mm.
Among the present invention, can select the copper covered steel wire of same type, same diameter, carry out concentric stranding by 3 strands, 7 strands or 19 strands.
Among the present invention, for 3 strands of twisted wires, its lay ratio is about between 14～20 times of the twisted wire diameters.
Among the present invention, its lay ratio is about 16.5 times of twisted wire diameter.
Among the present invention, for 7 strands and 19 strands of twisted wires, its lay ratio is about between 10～16 times of place layer diameter.
Among the present invention, its lay ratio is about 13.5 times of twisted wire diameter.
Among the present invention, outer field strand direction processed is generally left strand, and adjacent layer strand direction processed should be opposite.
The invention has the beneficial effects as follows: the present invention provides the twisted wire of many same diameter copper covered steels of a kind of usefulness single line concentric stranding for this reason.This twisted wire has the characteristic that flexibility is good, intensity is high, ampacity is large, and cost ratio hard drawn copper strand wire or copper-alloy stranded conductor are cheap.Be widely used in the carrier cable of aerial condutor, electric railway and urban rail transit contact network, the lightning conducter of high-lager building, electrical equipment earth connection etc.
Description of drawings
Fig. 1 is the cross-sectional structure schematic diagram of 3 strands of copper covered steel concentric lay conductors;
Fig. 2 is the cross-sectional structure schematic diagram of 7 strands of copper covered steel concentric lay conductors
Fig. 3 is the cross-sectional structure schematic diagram of 19 strands of copper covered steel concentric lay conductors.
Embodiment
Embodiment 1.The calculating of copper covered steel concentric lay conductor characteristic value
(1) the minimum of computation pull-off force of copper covered steel concentric lay conductor is 95% of each single line fracture strength summation for 3 strands of twisted wires; Be 90% of each single line fracture strength summation for 7 strands and 19 strands of twisted wires.
(2) weight of copper covered steel concentric lay conductor unit length and resistance are relevant with lay ratio.For 3 strands, 7 strands and 19 strands of twisted wires, its increment calculates by 0.8%, 1.0% and 1.4% respectively.
Maximum D.C. resistance when the copper covered steel concentric lay conductor of different classes of, wire diameter and number of share of stock, the average weight of its minimum of computation pull-off force, unit length and 20 ℃ is listed in table 1.
(3) the desirable 160000MPa of the modulus of elasticity of copper covered steel concentric lay conductor, coefficient of linear expansion desirable 12.9 * 10
-6
Embodiment 2.The strand system of copper covered steel concentric lay conductor
Now to select hard attitude copper covered steel wire 40H, wire diameter is φ 3.0mm, and making 19 strands of copper covered steel twisted wires is example, and its strand method processed is described.
The characteristic of this copper covered steel single line should satisfy the requirement of SJ/T11411-2010 " copper covered steel wire " standard.The surface is answered smooth rounding, is not had the defectives such as indenture, crackle, dew steel and oxidation.The tensile strength 9000MPa of 40H-φ 3.0 copper covered steel wires, percentage elongation 1.5%, copper layer thickness 0.25mm, dc resistivity 0.04296 Ω mm
2/ m, density is 8.24g/cm
3
19 strands of copper covered steel wires are put into stranding machine carry out concentric stranding by 19 strands of cross-sectional structures of Fig. 1.
Each root copper covered steel wire can weld or soldering.But the distance between the same layer top connection of twisted wire is 17m.The lay ratio of strand system is 13.5, and outermost strand direction processed is left strand, determines that thus the strand direction processed of the second layer is right strand.Require all single lines in the finished product twisted wire should naturally be in they should the position on.When twisted wire cut off in arbitrary position, these single lines should be tending towards keeping its original position.After twisted wire one end is opened, should be able to it be set back with hand.After the copper covered steel twisted wire strand system, detect property indices, and by after the above-mentioned given coefficient calculations, its value should satisfy the requirement of the 40H properties of sequence number 15 in the table 1.
Table 1 is for the copper covered steel wire of soft, the hard attitude of difference and different wire diameters, be stranding into 3 strands, 7 strands and 19 strands concentric lay conductors minimum of computation pull-off force, average weight and maximum resistance list in table 1, for reference.
Those skilled in the art can also twisted pair wire number of share of stock repair Yi, or utilize many copper covered steel concentric lay conductors to make multiple twisted wire.
The present invention is described by embodiment, and those skilled in the art know, in the situation that does not break away from the spirit and scope of the present invention, can carry out various changes or equivalence replacement to these features and embodiment.In addition, under guidance of the present invention, can make amendment to adapt to concrete situation and material to these features and embodiment and can not break away from the spirit and scope of the present invention.Therefore, the present invention is not subjected to the restriction of specific embodiment disclosed herein, and all interior embodiment of claim scope that fall into the application belong to protection scope of the present invention.
Claims (3)
1. copper covered steel concentric lay conductor, it is characterized in that, regulation according to electron trade standard SJ/T11411-2010 " copper covered steel wire ", selecting relative conductance is hard attitude (H) or ultrahard attitude (TH) the copper covered steel single line of 30%IACS or 40%IACS, and its classification is 30H, 30TH or 40H.
2. copper covered steel concentric lay conductor according to claim 1 is characterized in that, line diameter is φ 2.0mm～φ 4.5mm.
3. copper covered steel concentric lay conductor according to claim 1 is characterized in that, can select the copper covered steel wire of same type, same diameter, carries out concentric stranding by 3 strands, 7 strands or 19 strands.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210483260 CN102969041A (en) | 2012-11-26 | 2012-11-26 | Copper-clad-steel concentric stranded wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210483260 CN102969041A (en) | 2012-11-26 | 2012-11-26 | Copper-clad-steel concentric stranded wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102969041A true CN102969041A (en) | 2013-03-13 |
Family
ID=47799127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210483260 Pending CN102969041A (en) | 2012-11-26 | 2012-11-26 | Copper-clad-steel concentric stranded wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102969041A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104658661A (en) * | 2015-02-05 | 2015-05-27 | 江苏藤仓亨通光电有限公司 | Copper-coated steel core copper stranded wire |
-
2012
- 2012-11-26 CN CN 201210483260 patent/CN102969041A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104658661A (en) * | 2015-02-05 | 2015-05-27 | 江苏藤仓亨通光电有限公司 | Copper-coated steel core copper stranded wire |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203386485U (en) | Copper-clad steel concentric twisted wire | |
| CN101174490A (en) | Low-sag soft aluminum conducting wire | |
| US8357856B2 (en) | Electric cable | |
| RU171205U1 (en) | Bearing reinforced cable of the contact network of the railway | |
| US20160133353A1 (en) | Multilayer Composite Conductor and Manufacturing Method Thereof | |
| CN102969041A (en) | Copper-clad-steel concentric stranded wire | |
| CN104376911A (en) | Weather-proof high-conductivity composite structure power cable and manufacturing method thereof | |
| CN211699820U (en) | High-strength aluminum alloy stranded wire for electrified railway | |
| CN104616723A (en) | Copper clad steel strand wire structure | |
| CN204215788U (en) | Weather high connductivity composite construction power cable | |
| CN204480749U (en) | A kind of silver coated aluminum alloy strip armouring motor leading cable | |
| CN106816222A (en) | Power transmission cable | |
| JP7073871B2 (en) | Conductors, wires and cables | |
| CN204577120U (en) | A kind of copper-clad strand structure | |
| CN202487197U (en) | Novel aluminum clad steel-cored aluminum stranded wire | |
| CN202720959U (en) | Bending-resistance high-frequency digital cable | |
| CN202473390U (en) | Medium-voltage power cable | |
| CN208385041U (en) | Copper alloy concentric lay conductor | |
| CN208256304U (en) | Electric railway copper-alloy stranded conductor | |
| CN105405508A (en) | Reinforced aluminium alloy compressive cable | |
| WO2016158377A1 (en) | Insulation cable | |
| CN203870992U (en) | Aluminum-clad steel-cored heat-resistant aluminum alloy conducting wire for power transmission | |
| CN202796123U (en) | Car irradiation crosslinking polyethylene insulating wire of 125 DEG C | |
| CN109300608A (en) | Aerial cable | |
| CN103354106A (en) | Tensile integrated grounding cable for urban rail transit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130313 |
|
| RJ01 | Rejection of invention patent application after publication |