CN201590286U - Insulating overhead cable - Google Patents
Insulating overhead cable Download PDFInfo
- Publication number
- CN201590286U CN201590286U CN2009202187943U CN200920218794U CN201590286U CN 201590286 U CN201590286 U CN 201590286U CN 2009202187943 U CN2009202187943 U CN 2009202187943U CN 200920218794 U CN200920218794 U CN 200920218794U CN 201590286 U CN201590286 U CN 201590286U
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- China
- Prior art keywords
- carbon fiber
- aerial cable
- wire core
- insulated aerial
- conductor wire
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Abstract
The utility model discloses an insulating overhead cable which comprises a conductive wire core (1) and an insulating layer (4) arranged on the outside of the conductive wire core (1); a carbon fiber layer (2) is intertwisted between the conductive wire core (1) and the insulating layer (4); the carbon fiber layer comprises a plurality of compound carbon fiber wires and the carbon fiber layer (2) consists of compound carbon fiber wires winded and twisted on the conductive wire core (1) in a spaced way. The insulating overhead cable has high tensile strength and small weight so that the number of poles and towers between transmission lines can be decreased and the requirements on the pole and tower strength can be degraded, thus reducing the cost for laying out the lines and also the transportation cost and labor intensity of the workers.
Description
Technical field
The utility model belongs to the power cable technical field, is specifically related to a kind of insulated aerial cable.
Background technology
Insulated aerial cable is a kind of common high-altitude power transmission line, its structure is at aluminum conductor or copper conductor (most cases employing aluminum conductor, copper conductor uses seldom) extrude one deck weatherability insulating material outward, the weatherability insulating material can adopt crosslinked polyethylene, polyethylene or polyvinyl chloride.
The aerial cable of above-mentioned this structure in use tensile strength a little less than, the long-term use ruptured easily.In order to strengthen the tensile strength of aerial cable, avoid the generation of phenomenon of rupture, must cooperate built on stilts being laid on two overhead wire poles during use with steel wire or steel strand wire.Usually the system of laying that adopts has two kinds: a kind of mode is earlier insulated aerial cable and steel wire or steel wire bundle to be lumped together, and is laid in then between two line bars; Another kind of mode is earlier steel wire or steel strand wire to be laid, and insulated aerial cable is bundled on steel wire or the steel strand wire again.Above-mentioned dual mode laid processes complexity, working strength of workers is big during construction.Therefore produced a kind of insulated aerial cable afterwards on this basis, promptly increase steel core, and at the outside of aluminum steel layer extruded insulation layer, the material that insulating barrier adopted also had been crosslinked polyethylene, polyethylene or polyvinyl chloride at the center of aluminum steel layer with steel core.The cable of this structure can directly improve the tensile strength of insulated aerial cable, and easy construction, and labour intensity is lower.
Yet, set up the weight that steel core has increased cable at the center of cable, the span of cable is shortened, therefore, need increase the quantity of shaft tower during the construction of line, thereby increase the cost of circuit.In addition, because the increase of cable weight, therefore, higher to the design strength requirement of shaft tower, this also causes the increase of line cost.
The utility model content
In order to solve the above-mentioned deficiency of existing in prior technology, the utility model provides a kind of tensile strength height, lightweight insulated aerial cable, and it is low that this insulated aerial cable not only lays expense, and low, the easy construction of labour intensity when laying.
Solve technical scheme that the utility model technical problem adopted and be the insulating barrier that this insulated aerial cable comprises conductor wire core and is positioned at the described conductor wire core outside, stranded between described conductor wire core and described insulating barrier have a carbon fiber layer.
Described carbon fiber layer includes the carbon fiber reinforce plastic silk, and described carbon fiber layer is dredged by described many carbon fiber reinforce plastic silks and constituted around being stranded on the conductor wire core.Carbon fiber layer mainly has been the effect that improves the cable endwise tensile strength, because carbon fiber has the semiconductive effect, also can play the effect of screen on conductor wire core, the surface field of homogenizing conductor wire core.
Behind the carbon fiber wire and heat curing-type modified epoxy gluing and solidifying that described carbon fiber reinforce plastic silk can be closed by bundle, coat glass fiber on its surface again and solidify to form with thermosetting epoxy resin.According to different requirements the temperature resistant grade of epoxy resin is also had different requirements, the temperature resistant grade of epoxy resin is respectively 90 ° 0,120 °, 150 °, 200 °.
Carbon fiber layer has the following advantages: 1. light weight, density is about 1.6g/cm
3, and the density of steel is about 7.8g/cm
3, weight saving about 80%, can reduce the weight of unit volume cable; 2. the tensile strength height is about 7～8 times of steel, so can increase the span of cable, thereby reduces the quantity of shaft tower, reduces the construction cost of transmission line; 3. the temperature resistant grade height can be resisted about 160 ° high temperature; 4. have certain conductive capability, therefore, can reduce the loss of cable; 5. also have characteristics such as corrosion-resistant, wear-resistant, that the coefficient of expansion is little, therefore, can improve the life-span of cable.
For the mesohigh aerial cable, also can be provided with screen between preferred described carbon fiber layer and the described insulating barrier.The effect of screen is a homogenizing conductor wire core surface field under high pressure, eliminates the discharge of conductor wire core surface spine, has protected insulation, avoids the puncture of cable.Preferred described screen adopts semiconductive shielding layer.The material of described semiconductive shielding layer can adopt semiconductive shieldin material, and this material is to be that base-material adding conductive carbon black is made with the polyolefin mostly, is divided into two types of thermoplastics type and cross-linking types.
Preferably, described conductor wire core is by tight stranded the forming of multiple conducting wires branch multilayer, and outermost direction of lay is a left-hand, also can be dextrad.Described lead can adopt aluminium single line or copper single line.
Further preferably, described insulating barrier adopts the weather resisteant insulating material to make.Preferred described weather resisteant insulating material can adopt crosslinked polyethylene, polyethylene or polyvinyl chloride etc.
Described conductor wire core can adopt and non-ly press round structure or press round structure.
The utlity model has following advantage:
The utility model insulated aerial cable is provided with carbon fiber layer between conductor wire core and insulating barrier, carbon fiber layer can not only improve the tensile strength of insulated aerial cable, and can also alleviate the weight of cable, therefore, can increase the span of cable, the quantity of minimizing shaft tower and reduction are to the shaft tower requirement of strength, thereby the cost of transmission line is laid in reduction.In addition, owing to the utility model insulated aerial cable has characteristics in light weight, that external diameter is little (comparing with respect to band steel core insulated aerial cable in the prior art), therefore can also reduce cost of transportation and working strength of workers.
Description of drawings
Fig. 1 is the structural representation of the utility model low-pressure type insulated aerial cable
Fig. 2 is the structural representation of the utility model medium-pressure type insulated aerial cable
Among the figure: 1-conductor wire core 2-carbon fiber layer 3-screen 4-insulating barrier
Embodiment
For making those skilled in the art understand the technical solution of the utility model better, the utility model is described in further detail below in conjunction with drawings and Examples.
Following examples are indefiniteness embodiment of the present utility model.
As shown in Figure 1, insulated aerial cable comprises conductor wire core 1, carbon fiber layer 2 and insulating barrier 4 in the present embodiment, and carbon fiber layer 2 is arranged between conductor wire core 1 and the insulating barrier 4, and the insulated aerial cable of this structure is applicable under the low pressure situation and uses.
The aluminum conductor that it is 3.0mm that conductor wire core 1 adopts 36 diameters (can certainly with copper conductor or other lead) divides three layers and closely twists together, wherein, the direction of lay of innermost layer conductor wire core is a left-hand, and inferior outer field direction of lay is a dextrad, and outermost direction of lay is a left-hand.In the present embodiment, conductor wire core 1 adopts and presses round structure.
The carbon fiber reinforce plastic silk dextrad that it is 1.0mm that carbon fiber layer 2 adopts 40 diameters is dredged on conductor wire core 1 and is formed.Single carbon fiber reinforce plastic silk is to close carbon fiber wire and heat curing-type modified epoxy by bundle to solidify glued togetherly, and then coats glass fiber in its outside and solidify to form through thermosetting epoxy resin.Wherein the temperature resistant grade of thermosetting epoxy resin is 160 °.Because the density of carbon fiber is about 1.6g/cm
2, therefore, the weight of insulated aerial cable can alleviate about 80% like this, (tensile strength is 350N/mm and tensile strength strengthens on the contrary
2, improved 25%).In actual applications, also can according to circumstances increase the quantity of carbon fiber reinforce plastic silk to improve the tensile strength of cable.
When insulated aerial cable in depress when using, (this figure is middle pressure 240mm to the structure of insulated aerial cable as shown in Figure 2
2The aluminum conductor insulated aerial cable).The difference of the low-voltage insulation aerial cable among Fig. 2 and Fig. 1 is to have increased screen 3 between carbon fiber layer 2 and insulating barrier 4, and the low-voltage insulation aerial cable structure among other structure and Fig. 1 is identical, and the thickness of insulating barrier 4 is 3.4mm.
Be understandable that above execution mode only is the illustrative embodiments that adopts for principle of the present utility model is described, yet the utility model is not limited thereto.For those skilled in the art, under the situation that does not break away from spirit of the present utility model and essence, can make various modification and improvement, these modification and improvement are also in protection range of the present utility model.
Claims (10)
1. insulated aerial cable comprises conductor wire core (1) and is positioned at the insulating barrier (4) in described conductor wire core (1) outside, and it is characterized in that strandedly between described conductor wire core (1) and described insulating barrier (4) has a carbon fiber layer (2).
2. insulated aerial cable according to claim 1 is characterized in that being provided with screen (3) between described carbon fiber layer (2) and the described insulating barrier (4).
3. insulated aerial cable according to claim 2 is characterized in that described screen (3) adopts semiconductive shielding layer.
4. according to the described insulated aerial cable of one of claim 1-3, it is characterized in that described carbon fiber layer (2) includes many carbon fiber reinforce plastic silks, described carbon fiber layer (2) is dredged around being stranded in conductor wire core (1) by described carbon fiber reinforce plastic silk and is gone up formation.
5. insulated aerial cable according to claim 4, it is characterized in that carbon fiber wire and heat curing-type modified epoxy gluing and solidifying that described carbon fiber reinforce plastic silk closes by bundle after, coat glass fiber on its surface and solidify to form with thermosetting epoxy resin.
6. according to the described insulated aerial cable of one of claim 1-3, it is characterized in that described conductor wire core (1) is by tight stranded the forming of multiple conducting wires branch multilayer.
7. insulated aerial cable according to claim 6 is characterized in that described lead adopts aluminium single line or copper single line.
8. according to the described insulated aerial cable of one of claim 1-3, it is characterized in that described insulating barrier (4) adopts the weather resisteant insulating material to make.
9. insulated aerial cable according to claim 8 is characterized in that described weather resisteant insulating material is crosslinked polyethylene, polyethylene or polyvinyl chloride.
10. according to the described insulated aerial cable of one of claim 1-3, it is characterized in that described conductor wire core (1) presses round structure or presses round structure for non-.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202187943U CN201590286U (en) | 2009-11-16 | 2009-11-16 | Insulating overhead cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202187943U CN201590286U (en) | 2009-11-16 | 2009-11-16 | Insulating overhead cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201590286U true CN201590286U (en) | 2010-09-22 |
Family
ID=42750076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202187943U Expired - Fee Related CN201590286U (en) | 2009-11-16 | 2009-11-16 | Insulating overhead cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201590286U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102800401A (en) * | 2012-08-07 | 2012-11-28 | 王晖 | Special aerial cable |
| CN103426543A (en) * | 2012-05-17 | 2013-12-04 | 河南科信电缆有限公司 | Suspension type seabed carbon fiber compound cable |
| CN103456409A (en) * | 2012-06-05 | 2013-12-18 | 河南科信电缆有限公司 | Impregnation reinforced type carbon fiber electric cable |
| CN109300581A (en) * | 2017-07-24 | 2019-02-01 | 中国石油化工股份有限公司 | A kind of single-core power cables |
-
2009
- 2009-11-16 CN CN2009202187943U patent/CN201590286U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103426543A (en) * | 2012-05-17 | 2013-12-04 | 河南科信电缆有限公司 | Suspension type seabed carbon fiber compound cable |
| CN103456409A (en) * | 2012-06-05 | 2013-12-18 | 河南科信电缆有限公司 | Impregnation reinforced type carbon fiber electric cable |
| CN102800401A (en) * | 2012-08-07 | 2012-11-28 | 王晖 | Special aerial cable |
| CN109300581A (en) * | 2017-07-24 | 2019-02-01 | 中国石油化工股份有限公司 | A kind of single-core power cables |
| CN109300581B (en) * | 2017-07-24 | 2020-02-14 | 中国石油化工股份有限公司 | Single-core power cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100922 Termination date: 20151116 |
|
| EXPY | Termination of patent right or utility model |