CN203931601U - A kind of easily large ampacity electric power cable of heat radiating type - Google Patents
A kind of easily large ampacity electric power cable of heat radiating type Download PDFInfo
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- CN203931601U CN203931601U CN201420352765.7U CN201420352765U CN203931601U CN 203931601 U CN203931601 U CN 203931601U CN 201420352765 U CN201420352765 U CN 201420352765U CN 203931601 U CN203931601 U CN 203931601U
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- fire
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- outer conductor
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- center conductor
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- 239000004020 conductor Substances 0.000 claims abstract description 109
- 239000010410 layer Substances 0.000 claims abstract description 65
- 239000003063 flame retardant Substances 0.000 claims abstract description 38
- 239000004800 polyvinyl chloride Substances 0.000 claims abstract description 22
- 229920000915 polyvinyl chloride Polymers 0.000 claims abstract description 22
- 230000002093 peripheral effect Effects 0.000 claims abstract description 8
- 239000012790 adhesive layer Substances 0.000 claims abstract description 7
- 241001075561 Fioria Species 0.000 claims abstract description 6
- 239000000945 filler Substances 0.000 claims abstract description 4
- 239000011521 glass Substances 0.000 claims abstract description 4
- 238000009413 insulation Methods 0.000 claims description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 230000017525 heat dissipation Effects 0.000 abstract description 5
- 239000012141 concentrate Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000005253 cladding Methods 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
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- Insulated Conductors (AREA)
Abstract
The utility model discloses a kind of easily large ampacity electric power cable of heat radiating type, outer conductor is distributed on center conductor outer peripheral face, the cross section of center conductor is toroidal, outer conductor is by intrados, it is fan leaf sheet that extrados and two sides form cross section, the linear side of two outer conductors of interior arbitrary neighborhood is relative with arcuate flanks, the intrados of outer conductor and center conductor outer peripheral face match, the intrados of outer conductor is bonded on the adhesive-layer on center conductor and with center conductor and forms cable core, be coated successively the 3rd fire-retardant lapping layer outward at cable core, glass layer and polyvinyl chloride external sheath layer, between cable core and the 3rd fire-retardant lapping layer, fill high temperature resistant filler.The utlity model has Stability Analysis of Structures, ampacity is large, electric conductivity is good, the advantage of good heat dissipation effect, outer conductor gradually near extrados, makes the heat dissipation capacity of outer conductor concentrate on the outside of cable in outer conductor, has improved the lsafety level of electric wiring.
Description
Technical field
The utility model relates to technical field of electric wires and cables, relates in particular to a kind of easily large ampacity electric power cable of heat radiating type.
Background technology
Electric power cable is used in and sends out, joins, forceful electric power delivery of electrical energy in defeated, change, supply line, the electric current passing through large (tens peaces are between several kilo-amperes), voltage high (220V to 5000kV and more than).Electric power cable be divided into some kinds by principal characters such as its scope of application, design feature and performance requirements, electric power cable is one wherein.Power cable, in indoor, the tunnel of being mainly laid in and in pipeline, also can buried-pipe laying.The electric power cable of existing large ampacity, there is the poor and incendive problem of structural stability, this has increased certain difficulty to the design of electric power cable, therefore the fire-retardant problem of the lsafety level of electric wiring and cable more and more causes people's concern, and fire-retardantization of cable become a comprehensive developing direction of cable industry.
The current capacity of electric power cable is conventionally relevant with the sectional area of conductor thread core simultaneously, in the time that increasing, electric current can make conductor temperature raise, the sectional area that is particularly positioned at cable center conductor core is larger, the heat that cable distributes can be put aside in cable, once the temperature of the insulating barrier of conductor outer cladding exceedes the change that can cause in insulating barrier generation performance in limited time, thereby the insulating reliability of insulating barrier is reduced greatly, affect the useful life of electric power cable.
Utility model content
In order to solve the technical problem existing in background technology, the utility model proposes a kind of easily large ampacity electric power cable of heat radiating type, there is Stability Analysis of Structures, ampacity is large, electric conductivity is good, good heat dissipation effect, has improved the lsafety level of electric wiring.
The large ampacity electric power cable of the easy heat radiating type of one the utility model proposes, comprise a center conductor, N root outer conductor, 3≤N≤8, outer conductor is distributed on center conductor outer peripheral face, the cross section of center conductor is toroidal, center conductor is by center conductor and be coated on successively the first fire-retardant lapping layer outside center conductor, screen, the first polyvinyl chloride insulation layer and adhesive-layer form, screen is zinc-plated copper wire mesh braided layer, outer conductor is by intrados, it is fan leaf sheet that extrados and two sides form cross section, the arc length of intrados is L1, the arc length of extrados is L2, L1 < L2, one of them side is linear side, another side is the arcuate flanks to outer conductor inner side depression, between extrados and linear side, be equipped with the first circular arc chamfering R1, between extrados and arcuate flanks, be equipped with the second circular arc chamfering R2, R1 > R2, the linear side of two outer conductors of arbitrary neighborhood is relative with arcuate flanks, outer conductor by outer conductor and the second fire-retardant lapping layer and the second polyvinyl chloride insulation layer that are coated on successively outside outer conductor form, the intrados of outer conductor and center conductor outer peripheral face match, the intrados of outer conductor is bonded on the adhesive-layer on center conductor and with center conductor and forms cable core, be coated successively the 3rd fire-retardant lapping layer outward at cable core, glass layer and polyvinyl chloride external sheath layer, between cable core and the 3rd fire-retardant lapping layer, fill high temperature resistant filler.
Preferably, between the first circular arc chamfering R1 of two outer conductors of arbitrary neighborhood and the second circular arc chamfering R2, be provided with the hollow pipe that gives out heat for transmitting outer conductor.
Preferably, hollow pipe is mutually circumscribed with the first circular arc chamfering R1 and the second circular arc chamfering R2 respectively, with the 3rd fire-retardant lapping layer phase inscribe.
Preferably, the thickness of the first fire-retardant lapping layer, the second fire-retardant lapping layer and the 3rd fire-retardant lapping layer equates.
Preferably, the thickness of the first fire-retardant lapping layer, the second fire-retardant lapping layer and the 3rd fire-retardant lapping layer increases progressively gradually.
Preferably, the thickness of the first fire-retardant lapping layer, the second polyvinyl chloride insulation layer and polyvinyl chloride external sheath layer increases progressively gradually.
Preferably, center conductor and outer conductor are the copper wire of strands.
The utility model is applicable to the places such as power station that cable laying dense degree is higher, subway, tunnel, skyscraper, large industrial enterprise, oil field, colliery, the utility model allows working temperature to be generally no more than 70 DEG C for a long time, insulation temperature is 105 DEG C, when short circuit, the highest refractory temperature is no more than 160 DEG C.The utility model electric conductivity is good, outer conductor is for the large high-voltage alternating circuit of ampacity, center conductor is for the little low-voltage alternating-current circuit of ampacity, to meet different current capacities, outer conductor is by intrados, it is fan leaf sheet that extrados and two sides form cross section, the arc length of intrados is that the arc length that L1 is less than extrados is L2, one of them side is linear side, another side is the arcuate flanks to outer conductor inner side depression, between extrados and linear side, be equipped with the first circular arc chamfering R1, between extrados and arcuate flanks, be equipped with the second circular arc chamfering R2, R1 > R2, outer conductor in outer conductor gradually near extrados, make the heat dissipation capacity of outer conductor concentrate on the outside of cable, between two outer conductors of arbitrary neighborhood, the heat that hollow pipe distributes for conducting outer conductor is set.Center conductor, outer conductor are all coated with polyvinyl chloride insulation layer outward; under rated voltage condition of power supply; the insulating reliability of polyvinyl chloride insulation layer is large; fire resistance is good; in the time that power cable is on fire; the carburization zone that fire-retardant lapping layer, polyvinyl chloride external sheath layer form heat insulation resistance oxygen plays protection to cable, thereby stops flame cable expansion burning.
Brief description of the drawings
Fig. 1 is the cross section structure schematic diagram of the large ampacity electric power cable of a kind of easy heat radiating type that the utility model proposes.
Fig. 2 is the cross section structure schematic diagram of outer conductor in the large ampacity electric power cable of a kind of easy heat radiating type the utility model proposes.
Embodiment
As shown in Figure 1, 2, Fig. 1 is the cross section structure schematic diagram of the large ampacity electric power cable of a kind of easy heat radiating type that the utility model proposes; Fig. 2 is the cross section structure schematic diagram of outer conductor in the large ampacity electric power cable of a kind of easy heat radiating type the utility model proposes.
With reference to Fig. 1, Fig. 2, the large ampacity electric power cable of the easy heat radiating type of one the utility model proposes, comprise a center conductor 1, six roots of sensation outer conductor 2, outer conductor 2 is distributed on center conductor 1 outer peripheral face, the cross section of center conductor 1 is toroidal, center conductor 1 is made up of center conductor 11 and the first fire-retardant lapping layer 12, screen 13, the first polyvinyl chloride insulation layer 14 and the adhesive-layer 15 that are coated on successively outside center conductor 11, screen 13 is zinc-plated copper wire mesh braided layer, the copper wire that center conductor 11 is strands, outer conductor 2 is by intrados, it is fan leaf sheet that extrados and two sides form cross section, the arc length of intrados is L1, the arc length of extrados is L2, L1 < L2, one of them side is linear side, another side is the arcuate flanks to outer conductor 2 inner side depressions, between extrados and linear side, be equipped with the first circular arc chamfering R1, between extrados and arcuate flanks, be equipped with the second circular arc chamfering R2, R1 > R2, the linear side of two outer conductors 2 of arbitrary neighborhood is relative with arcuate flanks, outer conductor 2 is made up of outer conductor 21 and the second fire-retardant lapping layer 22 and the second polyvinyl chloride insulation layer 23 that are coated on successively outside outer conductor 21, the copper wire that outer conductor 21 is strands, the intrados of outer conductor 2 and center conductor 1 outer peripheral face match, the intrados of outer conductor 2 is bonded on the adhesive-layer 15 on center conductor 1 and with center conductor 1 and forms cable core, be coated successively the 3rd fire-retardant lapping layer 3 outward at cable core, glass layer 4 and polyvinyl chloride external sheath layer 5, between cable core and the 3rd fire-retardant lapping layer 3, fill high temperature resistant filler 6, between the first circular arc chamfering R1 of two outer conductors 2 of arbitrary neighborhood and the second circular arc chamfering R2, be provided with the hollow pipe 7 that gives out heat for transmitting outer conductor 2, hollow pipe 7 is mutually circumscribed with the first circular arc chamfering R1 and the second circular arc chamfering R2 respectively, with the 3rd fire-retardant lapping layer 3 phase inscribes.Under rated voltage condition of power supply; the insulating reliability of the first polyvinyl chloride insulation layer 14, the second polyvinyl chloride insulation layer 23 is large; fire resistance is good; in the time that power cable is on fire; the carburization zone that the 3rd fire-retardant lapping layer 3, polyvinyl chloride external sheath layer 5 form heat insulation resistance oxygen plays protection to cable, thereby stops flame cable expansion burning.
In specific embodiment, the thickness of the first fire-retardant lapping layer 12, the second fire-retardant lapping layer 22 and the 3rd fire-retardant lapping layer 3 increases progressively gradually; The thickness of the first fire-retardant lapping layer 14, the second polyvinyl chloride insulation layer 23 and polyvinyl chloride external sheath layer 5 increases progressively gradually.
The utility model electric conductivity is good, outer conductor 2 is for the large high-voltage alternating circuit of ampacity, center conductor 1 is for the little low-voltage alternating-current circuit of ampacity, to meet different current capacities, outer conductor 2 is by intrados, it is fan leaf sheet that extrados and two sides form cross section, the arc length of intrados is that the arc length that L1 is less than extrados is L2, one of them side is linear side, another side is the arcuate flanks to outer conductor inner side depression, between extrados and linear side, be equipped with the first circular arc chamfering R1, between extrados and arcuate flanks, be equipped with the second circular arc chamfering R2, R1 > R2, therefore outer conductor 21 in outer conductor 2 gradually near extrados, make the heat dissipation capacity of outer conductor 2 concentrate on the outside of cable, between two outer conductors of arbitrary neighborhood, the heat that hollow pipe distributes for conducting outer conductor is set, avoid heat to be accumulated in outer conductor 2 peripheries.
The above; it is only preferably embodiment of the utility model; but protection range of the present utility model is not limited to this; any be familiar with those skilled in the art the utility model disclose technical scope in; be equal to replacement or changed according to the technical solution of the utility model and utility model design thereof, within all should being encompassed in protection range of the present utility model.
Claims (7)
1. the large ampacity electric power cable of easy heat radiating type, it is characterized in that, comprise a center conductor (1), N root outer conductor (2), 3≤N≤8, outer conductor (2) is distributed on center conductor (1) outer peripheral face, the cross section of center conductor (1) is toroidal, center conductor (1) is by center conductor (11) and be coated on successively the first outer fire-retardant lapping layer (12) of center conductor (11), screen (13), the first polyvinyl chloride insulation layer (14) and adhesive-layer (15) form, outer conductor (2) is by intrados, it is fan leaf sheet that extrados and two sides form cross section, the arc length of intrados is L1, the arc length of extrados is L2, L1 < L2, one of them side is linear side, another side is the arcuate flanks to outer conductor (2) inner side depression, between extrados and linear side, be equipped with the first circular arc chamfering R1, between extrados and arcuate flanks, be equipped with the second circular arc chamfering R2, R1 > R2, the linear side of two outer conductors (2) of arbitrary neighborhood is relative with arcuate flanks, outer conductor (2) is by outer conductor (21) and be coated on successively the second outer fire-retardant lapping layer (22) of outer conductor (21) and the second polyvinyl chloride insulation layer (23) formation, the intrados of outer conductor and center conductor outer peripheral face match, the adhesive-layer (15) that the intrados of outer conductor (2) is bonded on center conductor (1) above and with center conductor (1) forms cable core, be coated successively the 3rd fire-retardant lapping layer (3) outward at cable core, glass layer (4) and polyvinyl chloride external sheath layer (5), between cable core and the 3rd fire-retardant lapping layer (3), fill high temperature resistant filler (6).
2. the large ampacity electric power cable of easy heat radiating type according to claim 1, it is characterized in that, between the first circular arc chamfering R1 of two outer conductors (2) of arbitrary neighborhood and the second circular arc chamfering R2, be provided with the hollow pipe (7) that gives out heat for transmitting outer conductor (2).
3. the large ampacity electric power cable of easy heat radiating type according to claim 2, is characterized in that, hollow pipe (7) is mutually circumscribed with the first circular arc chamfering R1 and the second circular arc chamfering R2 respectively, with the 3rd fire-retardant lapping layer (3) phase inscribe.
4. the large ampacity electric power cable of easy heat radiating type according to claim 1, is characterized in that, the thickness of the first fire-retardant lapping layer (12), the second fire-retardant lapping layer (22) and the 3rd fire-retardant lapping layer (3) equates.
5. the large ampacity electric power cable of easy heat radiating type according to claim 1, is characterized in that, the thickness of the first fire-retardant lapping layer (12), the second fire-retardant lapping layer (22) and the 3rd fire-retardant lapping layer (3) increases progressively gradually.
6. the large ampacity electric power cable of easy heat radiating type according to claim 1, it is characterized in that, the thickness of the first fire-retardant lapping layer (14), the second polyvinyl chloride insulation layer (23) and polyvinyl chloride external sheath layer (5) increases progressively gradually.
7. the large ampacity electric power cable of easy heat radiating type according to claim 1, is characterized in that, center conductor (11) and outer conductor (21) are the copper wire of strands.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420352765.7U CN203931601U (en) | 2014-06-27 | 2014-06-27 | A kind of easily large ampacity electric power cable of heat radiating type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420352765.7U CN203931601U (en) | 2014-06-27 | 2014-06-27 | A kind of easily large ampacity electric power cable of heat radiating type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203931601U true CN203931601U (en) | 2014-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420352765.7U Expired - Fee Related CN203931601U (en) | 2014-06-27 | 2014-06-27 | A kind of easily large ampacity electric power cable of heat radiating type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203931601U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104078145B (en) * | 2014-06-27 | 2017-01-25 | 安徽弘毅电缆集团有限公司 | Large-carrying-capacity power cable with heat easy to dissipate |
| CN107393649A (en) * | 2017-05-24 | 2017-11-24 | 晋源电气集团股份有限公司 | A kind of big current-carrying capacity power cable of easy heat radiation |
-
2014
- 2014-06-27 CN CN201420352765.7U patent/CN203931601U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104078145B (en) * | 2014-06-27 | 2017-01-25 | 安徽弘毅电缆集团有限公司 | Large-carrying-capacity power cable with heat easy to dissipate |
| CN107393649A (en) * | 2017-05-24 | 2017-11-24 | 晋源电气集团股份有限公司 | A kind of big current-carrying capacity power cable of easy heat radiation |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 Termination date: 20160627 |