CN202650593U - Cable - Google Patents
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- Publication number
- CN202650593U CN202650593U CN 201220332292 CN201220332292U CN202650593U CN 202650593 U CN202650593 U CN 202650593U CN 201220332292 CN201220332292 CN 201220332292 CN 201220332292 U CN201220332292 U CN 201220332292U CN 202650593 U CN202650593 U CN 202650593U
- Authority
- CN
- China
- Prior art keywords
- conductor
- cable
- conductor wire
- layer
- cable core
- 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.)
- Expired - Lifetime
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- 239000004020 conductor Substances 0.000 claims abstract description 167
- 239000000463 material Substances 0.000 claims abstract description 16
- 238000005260 corrosion Methods 0.000 claims abstract description 8
- 230000007797 corrosion Effects 0.000 claims abstract description 8
- 239000002480 mineral oil Substances 0.000 claims abstract description 8
- 235000010446 mineral oil Nutrition 0.000 claims abstract description 8
- 230000002093 peripheral effect Effects 0.000 claims abstract description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 9
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 7
- 239000003063 flame retardant Substances 0.000 claims description 7
- 239000008358 core component Substances 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 9
- 229910052802 copper Inorganic materials 0.000 description 9
- 239000010949 copper Substances 0.000 description 9
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 238000005452 bending Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 206010051246 Photodermatosis Diseases 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000008845 photoaging Effects 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 238000009863 impact test Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Images
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- Insulated Conductors (AREA)
Abstract
The utility model provides a cable, comprising at least a cable core assembly and an oversheath which coated on at least a cable core assembly. Each cable core assembly comprises a cable core and an insulating layer coated outside the cable core assembly. Each cable core is provided with a round cross section and is stranded by at least two conductor wires. At least a conductor wire layer is arranged from inside out on a radial direction of the round cross section. Each conductor wire layer comprises at least a conductor wire, and peripheral surfaces of two adjacent conductor wires which are facing each other fit with each other. A material of the oversheath is a PVC material with mineral oil corrosion resistance property.
Description
Technical Field
The utility model relates to a cable.
Background
Because of the good conductivity of copper, most of the cables used in China currently use copper as a conductor. However, the copper has a high density, and the bending property of the copper often cannot meet the requirement of flexibility of the cable in some industrial installation environments, so that the copper cable is difficult to install. Meanwhile, the price of copper is high, so that the price of the copper cable is high. If pure aluminum is used as the conductor, although aluminum is inexpensive and has good flexibility, the properties in terms of tensile strength and elongation are difficult to satisfy the requirements for industrial use. Therefore, in addition to copper conductors and aluminum conductors, cables using aluminum alloys as conductors are being used in the beginning, in order to balance the characteristics of aluminum alloy cables with the demands of industrial cables in various aspects.
In addition, in the prior art, the cross-section of the metal conductor wire manufactured by drawing, rolling, etc. is generally circular, and the cross-sectional shape of each metal conductor wire is maintained when the cable core is formed by twisting a plurality of metal conductor wires. That is, in the cross-section of the cable core, the shape of each conductor wire still remains circular, with a configuration in which a large gap may exist between adjacent conductor wires. Therefore, the cross section of the cable is large, so that the bending radius of the cable is large, and the installation is not facilitated.
In addition, in the prior art, the outer sheath of the cable cannot meet the requirement of mineral oil corrosion resistance of the outer sheath in national standard GB/T2951.21-2008 in China, so that the service life of the cable is shortened under specific use conditions
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, the utility model provides an aluminum alloy cable, this aluminum alloy cable can solve above-mentioned technical problem through simple structure.
According to an aspect of the present invention, a cable is provided. The cable includes: the cable comprises at least one cable core component and an outer sheath coated on the periphery of the at least one cable core component; each cable core component comprises a cable core and an insulating layer coated outside the cable core component; each cable core is provided with a circular cross section and formed by twisting at least two conductor wires, at least one conductor wire layer is arranged from inside to outside in the radial direction of the circular cross section, each conductor wire layer comprises at least one conductor wire, and the mutually opposite peripheral surfaces of two adjacent conductor wires are mutually attached.
Preferably, at least one of the conductor filament layers is two or more conductor filament layers, and outer circumferential surfaces of two adjacent conductor filament layers facing each other are bonded to each other.
Preferably, of the more than two conductor wire layers, the conductor wire layer positioned at the center of the cable core is a central conductor wire layer, and the conductor wire layer surrounding the central conductor wire layer is an outer conductor wire layer; wherein the central conductor wire layer has a circular cross-section; the outer conductor wire layer has a circular cross-section.
Preferably, the more than two conductor filament layers are 2 conductor filament layers, and the central conductor filament layer comprises 3 conductor filaments; the outer conductor filament layer comprises 7 conductor filaments.
Preferably, the more than two conductor filament layers are 3 conductor filament layers, and the central conductor filament layer comprises 3 conductor filaments; the outer conductor filament layer includes a first conductor filament layer and a second conductor filament layer, wherein the first conductor filament layer is closer to the center conductor filament layer than the second conductor filament layer. The first conductor filament layer includes 8 conductor filaments and the second conductor filament layer includes 12 conductor filaments.
By adopting the arrangement mode, gaps among conductor wire layers and gaps among conductor wires are reduced to the greatest extent, so that the compression coefficient of the cable core reaches more than 90%.
Preferably, the outer sheath is made of a mineral oil corrosion resistant PVC material.
The outer sheath meets the mineral oil corrosion resistance of the national standard, and can prolong the service life of the cable.
Preferably, the outer sheath is made of a PVC material having flame retardant properties.
The outer sheath made of the flame-retardant material can enable the flame retardant property of the cable to be better, and provides greater safety.
Preferably, the material of the conductor wire is aluminum alloy.
Preferably, at least one cable core assembly is one cable core assembly.
When the conductor wire is made of aluminum alloy, it has advantages in that it has not only bending properties superior to those of copper cables and lower manufacturing costs, but also tensile strength, elongation and creep resistance superior to those of aluminum cables.
The following detailed description is provided for illustrative purposes, and is not intended to limit the scope of the invention to the particular embodiments described.
Drawings
Fig. 1 is a schematic general structural view of a cable according to all embodiments of the present invention;
figure 2 is a cross-sectional view of a cable core according to a first embodiment of the invention;
figure 3 is a cross-sectional view of a cable core according to a second embodiment of the invention.
Detailed Description
For convenience of explanation of the structural configuration and the usage state of the present invention, the following embodiments will explain the preferred embodiments of the present invention with reference to the drawings.
As shown in fig. 1, the cable 1 according to the present invention includes: a plurality of cable core assemblies 5 and an outer sheath 4; each cable core assembly 5 comprises a cable core 3 and an insulating layer 3 coated outside the cable core assembly 5; the outer sheath 4 is coated on the peripheries of the cable core assemblies 5; each cable core 2 has a circular cross section, each cable core 2 is formed by twisting at least two conductor wires, at least one conductor wire layer is arranged from inside to outside in the radial direction of the circular cross section, each conductor wire layer comprises at least one conductor wire, and the outer peripheral surfaces, opposite to each other, of two adjacent conductor wires are attached to each other.
More specifically, in the preferred embodiment of the present invention, as shown in fig. 2 and 3, at least one conductor wire layer is two or more conductor wire layers, and the outer peripheral surfaces of two adjacent conductor wire layers opposite to each other are attached to each other. Of the two or more conductor filament layers, the conductor filament layer positioned at the center of the cable core 2 is a central conductor filament layer 21, and the conductor filament layer surrounding the central conductor filament layer 21 is an outer conductor filament layer 22; wherein the central conductor wire layer 21 has a circular cross-section; the outer conductor wire layer 22 has a circular cross-section.
In the cable 1 provided by the present invention, all the conductor wires are preformed before twisting. The conductor wires after the preforming process are not in a conventional circular cross section but are formed into different shapes in accordance with the actual requirements of each conductor wire layer (for example, a conductor wire layer of a circular cross section or a conductor wire layer of a circular cross section), and the cable core 2 having different cross-sectional areas is formed by arranging a plurality of conductor wire layers in sequence in the radial direction of the cable core 2. Thus, gaps among different conductor wire layers and between conductor wires are reduced to the maximum extent, and the compression coefficient of the cable core 2 reaches more than 90%. The bending radius of the cable core 2 is only 7 times of the outer diameter of the cable core. Various preferred configurations of the conductor filament layers of the cable core 2 will be specified in connection with the two preferred embodiments.
In the first embodiment of the present invention, referring to fig. 2, the two or more conductor filament layers are 2 conductor filament layers, wherein the central conductor filament layer 21 includes 3 conductor filaments 21 a; the outer conductor filament layer 22 includes 7 conductor filaments 22 a.
Before twisting the conductor wires, the cross section of each conductor wire 21a in the center conductor wire layer 21 is preformed into a substantially triangular shape, and the cross-sectional shape and area of each conductor wire 21a are equal. In the outer conductor filament layer 22, the cross section of each conductor filament 22a is preformed into a substantially trapezoidal shape, and the cross-sectional shape and area of each conductor filament 22a are equal to each other.
Compared with the conventional cable core consisting of the round conductor wires, the conductor wires arranged in the above way are arranged more compactly and are attached more closely, so that the compression coefficient of the conductor wires is obviously improved, and the bending radius of the cable 1 is reduced.
In the following second embodiment, another configuration of the cable core 2 according to the present invention will be explained.
Referring to fig. 3, in the cable core 2 provided in the second embodiment, the two or more conductor filament layers are 3 conductor filament layers, wherein the central conductor filament layer 21 includes 3 conductor filaments 21 a; the outer conductor filament layer 22 includes a first conductor filament layer 22A and a second conductor filament layer 22B. Further, the first conductor filament layer 22A is closer to the center conductor filament layer 21 than the second conductor filament layer 22B, the first conductor filament layer 22A includes 8 conductor filaments 22A, and the second conductor filament layer 22B includes 12 conductor filaments 22B. Similarly to the first embodiment described above, in this second embodiment, each conductor wire is also subjected to a preforming process to give it a suitable cross-sectional area and shape. Before twisting the conductor wires, the cross section of each conductor wire 21a in the center conductor wire layer 21 is preformed into a substantially triangular shape, and the cross-sectional shape and area of each conductor wire 21a are equal. In the first conductor wire layer 22A, the cross section of each conductor wire 22A is preformed into a substantially trapezoidal shape, and the cross-sectional shape and area of each conductor wire 22A are equal to each other. In the second conductor wire layer 22B, the cross section of each conductor wire 22B is preformed into a substantially trapezoidal shape, and the cross-sectional shape and area of each conductor wire 22B are equal to each other.
As shown in fig. 3, in the present second embodiment, the sectional area of the conductor wire 22b is larger than that of the conductor wire 22 a. However, the present invention is not limited thereto, and those skilled in the art can select the number of the conductor wires and the cross-sectional area of each conductor wire in each conductor wire layer according to actual use and design requirements, as long as the conductor wire layer can be made to conform to the limitations of the present invention. In addition to the two embodiments, there are other conductor wire arrangements, which are not listed here.
Further, in the cable 1 provided in the above two preferred embodiments, the outer sheath 4 is made of PVC material resistant to corrosion by mineral oil. According to the test, the maximum change rate of the tensile strength and the elongation at break of the outer sheath 4 made of the PVC material is-40% after the outer sheath 4 is immersed in oil with the oil temperature of 100 +/-2 ℃ for 24 hours. The test result meets the requirement of mineral oil corrosion resistance in the national standard GT/T2951.21-2008. The outer sheath 4 made of the PVC material is better in mineral oil corrosion resistance than the outer sheath made of other materials, so that the service life of the cable 1 can be prolonged.
Further, in the cable 1 provided by the present invention, the outer sheath 4 can also be made of PVC material with flame retardant property. According to the test, the cable 1 using the outer sheath 4 made of the PVC material passes the flame vertical spreading test of the vertically installed bundled wire cable, the flame vertical spreading test of the C type flame retardant test, the longest distance of the carbonized part on the test sample does not exceed 2.5m above the bottom edge of the blast burner, and the result meets the requirement of the national GB/T18380.35-2008. Therefore, the cable 1 using the outer sheath 4 made of the PVC material has better flame retardant property.
In addition, the cable 1 with the outer sheath 8 made of PVC material has resistance to ultraviolet ageing and low temperature. In terms of ultraviolet ray aging resistance, the outer sheath 4 has a change rate of tensile strength and a fracture growth rate of not more than 30% after 1008 hours of photoaging in a 0-1008 hour artificial weathering test. After photo-aging at 504 and 1008h, the change rate of the tensile strength and the fracture growth rate of the outer sheath 4 is not more than 15%. The result meets the requirements of the national standard GB/T12527-2008. In terms of low temperature resistance, in the test at a test temperature of-40 °, the low temperature tensile elongation at break portion of the outer sheath 4 was less than 20%, and the test piece after the low temperature impact test was free from cracks.
Further, the conductor wire is made of aluminum alloy. The tensile strength of the conductor wire made of the aluminum alloy is 100-140Mpa, the elongation is more than 20 percent, and the creep resistance is greatly improved compared with that of pure aluminum.
The above description is only for the preferred embodiment and the accompanying drawings, which are not intended to limit the scope of the present invention, and the present invention is not limited by the scope of the claims, which are embodied by the same technical means or the scope of the claims.
Claims (9)
1. A cable, comprising: the cable comprises at least one cable core component and an outer sheath coated on the periphery of the at least one cable core component; wherein
Each cable core assembly comprises a cable core and an insulating layer coated outside the cable core assembly; and is
Each cable core is provided with a circular cross section and formed by twisting at least two conductor wires, at least one conductor wire layer is arranged from inside to outside in the radial direction of the circular cross section, each conductor wire layer comprises at least one conductor wire, and the outer peripheral surfaces, opposite to each other, of two adjacent conductor wires are attached to each other.
2. The cable of claim 1,
the at least one conductor wire layer is more than two conductor wire layers, and the outer peripheral surfaces of the two adjacent conductor wire layers, which are opposite to each other, are attached to each other.
3. The cable of claim 2,
among the more than two conductor wire layers, the conductor wire layer positioned at the center of the cable core is a central conductor wire layer, and the conductor wire layer surrounding the central conductor wire layer is an outer conductor wire layer; wherein,
the center conductor wire layer has a circular cross-section and the outer conductor wire layer has a circular cross-section.
4. The cable of claim 3,
the more than two conductor wire layers are 2 conductor wire layers; wherein
The central conductor silk layer comprises 3 conductor silks, and the outer conductor silk layer comprises 7 conductor silks.
5. The cable of claim 3,
the more than two conductor wire layers are 3 conductor wire layers; wherein
The central conductor wire layer comprises 3 conductor wires;
the outer conductor filament layer includes a first conductor filament layer and a second conductor filament layer, wherein the first conductor filament layer is closer to the center conductor filament layer than the second conductor filament layer, the first conductor filament layer includes 8 conductor filaments, the second conductor filament layer includes 12 conductor filaments.
6. The cable of any one of claims 1-5, wherein the outer jacket is made of a mineral oil corrosion resistant PVC material.
7. The cable of any one of claims 1-5, wherein the outer jacket is made of a PVC material having flame retardant properties.
8. The cable of claim 1, wherein the conductor wire is an aluminum alloy.
9. The cable of claim 1, wherein the at least one core assembly is one core assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220332292 CN202650593U (en) | 2012-07-10 | 2012-07-10 | Cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220332292 CN202650593U (en) | 2012-07-10 | 2012-07-10 | Cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202650593U true CN202650593U (en) | 2013-01-02 |
Family
ID=47419661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220332292 Expired - Lifetime CN202650593U (en) | 2012-07-10 | 2012-07-10 | Cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202650593U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103500615A (en) * | 2013-09-04 | 2014-01-08 | 安徽电气集团股份有限公司 | Process for manufacturing spliced conductor type cable |
| CN109686505A (en) * | 2018-11-27 | 2019-04-26 | 广州岭南电缆股份有限公司 | Press the preparation method of milliken conductor |
-
2012
- 2012-07-10 CN CN 201220332292 patent/CN202650593U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103500615A (en) * | 2013-09-04 | 2014-01-08 | 安徽电气集团股份有限公司 | Process for manufacturing spliced conductor type cable |
| CN109686505A (en) * | 2018-11-27 | 2019-04-26 | 广州岭南电缆股份有限公司 | Press the preparation method of milliken conductor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: TONGYONG (TIANJIN) ALUMINIUM ALLOY PRODUCT CO., LT Free format text: FORMER NAME: ALCAN (TIANJIN) ALLOY PRODUCTS CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 300308, No. 251, fourteen West Road, Dongli Airport Logistics Development Zone, Tianjin Patentee after: TONGYONG (TIANJIN) ALUMINIUM ALLOY PRODUCTS CO.,LTD. Address before: 300308, No. 251, fourteen West Road, Dongli Airport Logistics Development Zone, Tianjin Patentee before: ALCAN (TIANJIN) ALLOY PRODUCTS Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20130102 |
|
| CX01 | Expiry of patent term |