CN104078145B - Large-carrying-capacity power cable with heat easy to dissipate - Google Patents
Large-carrying-capacity power cable with heat easy to dissipate Download PDFInfo
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- CN104078145B CN104078145B CN201410300821.7A CN201410300821A CN104078145B CN 104078145 B CN104078145 B CN 104078145B CN 201410300821 A CN201410300821 A CN 201410300821A CN 104078145 B CN104078145 B CN 104078145B
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Abstract
The invention discloses a large-carrying-capacity power cable with heat easy to dissipate. External conductors are evenly distributed on the peripheral face of a center conductor, the cross section of the center conductor is round, each external conductor is composed of an inner camber surface, an outer camber surface and two side faces, the cross section of each external conductor is in the shape of a fan blade, the linear side faces and the camber side surfaces of any two adjacent external conductors are opposite, the inner camber surface of each external conductor is matched with the peripheral face of the center conductor, the inner camber surface of each external conductor adheres to the adhesive layer of the center conductor, the inner chamber faces of the external conductors and the center conductor form a cable core, the cable core is sequentially wrapped in a third flame-retarding wrapping layer, a glass fiber layer and a polyvinyl chloride outer sheath layer, and the space between the cable core and the third flame-retarding layer is filled with high-temperature-resistant filler. The large-carrying-capacity power cable with heat easy to dissipate has the advantages of being stable in structure, large in carrying capacity, excellent in conductivity and good in heat dissipating effect, external wires gradually get close to the external camber surfaces in the external conductors, heat dissipated by the external conductors is centralized outside the cable, and the safety level of an electrical circuit is improved.
Description
Technical field
The present invention relates to technical field of electric wires and cables, the big current-carrying capacity electric power cable of more particularly, to a kind of fugitive heat type.
Background technology
Electric power cable be used in send out, join, defeated, become, the forceful electric power electric energy transmission in supply line, the electric current passing through is big, and (tens pacify
To between several kilo-amperes), voltage high (220v to 5000kv and more than).Electric power cable by its range, design feature and property
The principal characters such as energy requirement are divided into some kinds, and electric power cable is one kind therein.Power cable, be mainly laid in room
In interior, tunnel and in pipeline, also can buried-pipe laying., there is structural stability poor and inflammable in the electric power cable of existing big current-carrying capacity
The problem burnt, this increased certain difficulty, the therefore level of security of electric wiring and cable to the design of electric power cable
Fire-retardant problem increasingly causes the concern of people, a flame-retarded comprehensive sexual development side having become as cable industry of cable
To.
The current capacity of electric power cable is generally relevant with the sectional area of conductor thread core simultaneously, can make conductor when the current increases
Temperature raises, and the sectional area being particularly at cable centerline conductor thread core is bigger, and the heat that cable distributes can be put aside in cable,
Can lead to insulating barrier that the change in performance occurs when the temperature of the insulating barrier of conductor outer cladding exceedes the upper limit, so that insulation
The insulating reliability of layer substantially reduces, the service life of impact electric power cable.
Content of the invention
In order to solve technical problem present in background technology, the present invention proposes a kind of big current-carrying capacity electric power of fugitive heat type
Cable, has the advantages that Stability Analysis of Structures, current-carrying capacity are big, electric conductivity is excellent, good heat dissipation effect, improves the safety of electric wiring
Level.
A kind of big current-carrying capacity electric power cable of fugitive heat type proposed by the present invention, including a center conductor, n root outer conductor, 3
≤ n≤8, outer conductor is distributed on center conductor outer peripheral face, and the cross section of center conductor is toroidal, and center conductor is led by center
Line and the first fire-retardant lapping layer being coated on outside center conductor successively, screen layer, the first polyvinyl chloride insulation layer and adhesive-layer
Constitute, screen layer is tin plating copper wire mesh braided layer, it is fan leaf that outer conductor constitutes cross section by intrados, extrados and two sides
Sheet, the arc length of intrados is l1, and the arc length of extrados is l2, l1 ＜ l2, and one of side is linear side, another side
Face is the arcuate flanks of the depression to inside outer conductor, is equipped with the first circular arc chamfering r1, outer arc between extrados and linear side
Be equipped with the second circular arc chamfering r2 between face and arcuate flanks, r1 ＞ r2, the linear side of two outer conductors of arbitrary neighborhood and
Arcuate flanks are relative, the second fire-retardant lapping layer and the second polychlorostyrene second that outer conductor is coated on outer conductor outside by outer conductor and successively
Alkene insulating barrier is constituted, and the intrados of outer conductor is matched with center conductor outer peripheral face, and the intrados of outer conductor is bonded in center and leads
Constitute cable core on adhesive-layer on body and with center conductor, coat the 3rd fire-retardant lapping layer, glass layer outside cable core successively
With polyvinyl chloride external sheath layer, between cable core and the 3rd fire-retardant lapping layer, fill high temperature resistant filler.
Preferably, it is provided between the first circular arc chamfering r1 and the second circular arc chamfering r2 of two outer conductors of arbitrary neighborhood
Give out the hollow pipe of heat for transmitting outer conductor.
Preferably, hollow pipe is circumscribed with the first circular arc chamfering r1 and the second circular arc chamfering r2 phase respectively, fire-retardant with the 3rd around
Covering 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 is equal.
Preferably, the thickness of the first fire-retardant lapping layer, the second fire-retardant lapping layer and the 3rd fire-retardant lapping layer is gradually incremented by.
Preferably, the thickness of the first fire-retardant lapping layer, the second polyvinyl chloride insulation layer and polyvinyl chloride external sheath layer is gradually
It is incremented by.
Preferably, center conductor and outer conductor are the copper wire of strands.
The present invention is applied to the higher power station of cable laying dense degree, subway, tunnel, skyscraper, large-scale industrial and mineral
The places such as enterprise, oil field, colliery, the present invention allows operating temperature to be usually no more than 70 DEG C for a long time, and insulation temperature is 105 DEG C, short
Lu Shi, highest refractory temperature is less than 160 DEG C.Electric conductivity of the present invention is excellent, and outer conductor is used for the big high-voltage alternating of current-carrying capacity
Circuit, center conductor is used for the little low-voltage alternating-current circuit of current-carrying capacity, to meet different current capacities, outer conductor by intrados,
Extrados and two sides composition cross section are fan leaf sheet, and the arc length that the arc length of intrados is less than extrados for l1 is l2,
One of side is linear side, and another side is the arcuate flanks of the depression to inside outer conductor, extrados and linear side
It is equipped with the first circular arc chamfering r1 between face, be equipped with the second circular arc chamfering r2, r1 ＞ r2 between extrados and arcuate flanks, outward
Wire moves closer to extrados in outer conductor so that the heat dissipation capacity of outer conductor concentrates on the outside of cable, arbitrary neighborhood two
Between outer conductor, setting hollow pipe is used for conducting the heat that outer conductor distributes.All it is coated with polychlorostyrene second outside center conductor, outer conductor
Alkene insulating barrier, under rated voltage condition of power supply, the insulating reliability of polyvinyl chloride insulation layer is big, and fire resistance is good, works as electric power
When cable is on fire, the carburization zone that fire-retardant lapping layer, polyvinyl chloride external sheath layer form heat-insulated resistance oxygen plays protection to cable, thus
Stop the expansion burning of flame cable.
Brief description
Fig. 1 is a kind of cross section structure schematic diagram of the big current-carrying capacity electric power cable of fugitive heat type proposed by the present invention.
Fig. 2 is that the cross section structure of outer conductor in a kind of big current-carrying capacity electric power cable of fugitive heat type proposed by the present invention is illustrated
Figure.
Specific embodiment
As shown in Figure 1, 2, Fig. 1 is that a kind of cross section structure of the big current-carrying capacity electric power cable of fugitive heat type proposed by the present invention shows
It is intended to；Fig. 2 is the cross section structure schematic diagram of outer conductor in a kind of big current-carrying capacity electric power cable of fugitive heat type proposed by the present invention.
With reference to Fig. 1, Fig. 2, a kind of big current-carrying capacity electric power cable of fugitive heat type proposed by the present invention, including a center conductor
1st, six roots of sensation outer conductor 2, outer conductor 2 is distributed on center conductor 1 outer peripheral face, and the cross section of center conductor 1 is toroidal, and center is led
The first fire-retardant lapping layer 12 that body 1 is coated on center conductor 11 outside by center conductor 11 and successively, screen layer 13, the first polychlorostyrene
Ethene insulating barrier 14 and adhesive-layer 15 are constituted, and screen layer 13 is tin plating copper wire mesh braided layer, and center conductor 11 is the copper of strands
Silk；It is fan leaf sheet that outer conductor 2 constitutes cross section by intrados, extrados and two sides, and the arc length of intrados is l1, outward
The arc length of cambered surface is l2, l1 ＜ l2, and one of side is linear side, and another side is to outer conductor 2 inner side depression
Arcuate flanks, are equipped with the first circular arc chamfering r1, are equipped between extrados and arcuate flanks between extrados and linear side
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 by
Outer conductor 21 and the second fire-retardant lapping layer 22 being coated on successively outside outer conductor 21 and the second polyvinyl chloride insulation layer 23 are constituted,
Outer conductor 21 is the copper wire of strands；The intrados of outer conductor 2 is matched with center conductor 1 outer peripheral face, the inner arc of outer conductor 2
Face is bonded on the adhesive-layer 15 on center conductor 1 and constitutes cable core with center conductor 1, coats the 3rd successively fire-retardant outside cable core
Lapping layer 3, glass layer 4 and polyvinyl chloride external sheath layer 5, fill high temperature resistant between cable core and the 3rd fire-retardant lapping layer 3
Filler 6, is provided with for transmitting between the first circular arc chamfering r1 and the second circular arc chamfering r2 of two outer conductors 2 of arbitrary neighborhood
Outer conductor 2 gives out the hollow pipe 7 of heat, and hollow pipe 7 is circumscribed with the first circular arc chamfering r1 and the second circular arc chamfering r2 phase respectively,
With the 3rd fire-retardant lapping layer 3 phase inscribe.Under rated voltage condition of power supply, the first polyvinyl chloride insulation layer 14, the second polychlorostyrene second
The insulating reliability of alkene insulating barrier 23 is big, and fire resistance is good, when power cable is on fire, the 3rd fire-retardant lapping layer 3, polyvinyl chloride
The carburization zone that external sheath layer 5 forms heat-insulated resistance oxygen plays protection to cable, thus stoping the expansion burning of flame cable.
In a particular 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
Degree is gradually incremented by；The thickness of the first fire-retardant lapping layer 14, the second polyvinyl chloride insulation layer 23 and polyvinyl chloride external sheath layer 5 is gradually
It is incremented by.
Electric conductivity of the present invention is excellent, and outer conductor 2 is used for the big high-voltage alternating circuit of current-carrying capacity, and center conductor 1 is used for carrying
The little low-voltage alternating-current circuit of flow, to meet different current capacities, outer conductor 2 is by intrados, extrados and two side structures
One-tenth cross section is fan leaf sheet, and the arc length that the arc length of intrados is less than extrados for l1 is l2, and one of side is linear
Side, another side is the arcuate flanks of the depression to inside outer conductor, is equipped with the first circle between extrados and linear side
Arc chamfering r1, is equipped with the second circular arc chamfering r2, r1 ＞ r2, therefore outer conductor 21 is in outer conductor between extrados and arcuate flanks
Extrados is moved closer to so that the heat dissipation capacity of outer conductor 2 concentrates on the outside of cable, between two outer conductors of arbitrary neighborhood in 2
Setting hollow pipe is used for conducting the heat that outer conductor distributes, it is to avoid accumulation of heat is in outer conductor 2 periphery.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any those familiar with the art the invention discloses technical scope in, technology according to the present invention scheme and its
Inventive concept equivalent or change in addition, all should be included within the scope of the present invention.
Claims (7)
1. a kind of big current-carrying capacity electric power cable of fugitive heat type is it is characterised in that include center conductor (1), a n root outer conductor
(2), 3≤n≤8, outer conductor (2) is distributed on center conductor (1) outer peripheral face, and the cross section of center conductor (1) is toroidal, in
Heart conductor (1) is coated on center conductor (11) first fire-retardant lapping layer (12) outward, shielding by center conductor (11) and successively
Layer (13), the first polyvinyl chloride insulation layer (14) and adhesive-layer (15) are constituted, the cross section of outer conductor (2) be by intrados, outward
Cambered surface and the fan leaf sheet of two side compositions, the arc length of intrados is l1, and the arc length of extrados is l2, l1 ＜ l2, wherein
One side is linear side, and another side is the arcuate flanks of the depression to inside outer conductor (2), extrados and linear side
Between be equipped with the first circular arc chamfering r1, be equipped with the second circular arc chamfering r2, r1 ＞ r2 between extrados and arcuate flanks, arbitrarily
The linear side of two adjacent outer conductors (2) is relative with arcuate flanks, and outer conductor (2) coats by outer conductor (21) and successively
Constitute in outer the second fire-retardant lapping layer (22) of outer conductor (21) and the second polyvinyl chloride insulation layer (23), the intrados of outer conductor
Match with center conductor outer peripheral face, the intrados of outer conductor (2) be bonded on the adhesive-layer (15) on center conductor (1) and with
Center conductor (1) constitutes cable core, coats the 3rd fire-retardant lapping layer (3), glass layer (4) and polyvinyl chloride outside cable core successively
External sheath layer (5), fills high temperature resistant filler (6) between cable core and the 3rd fire-retardant lapping layer (3).
2. the big current-carrying capacity electric power cable of fugitive heat type according to claim 1 is it is characterised in that in arbitrary neighborhood two
It is provided between first circular arc chamfering r1 of outer conductor (2) and the second circular arc chamfering r2 and give out heat for transmitting outer conductor (2)
Hollow pipe (7).
3. the big current-carrying capacity electric power cable of fugitive heat type according to claim 2 it is characterised in that hollow pipe (7) respectively with
First circular arc chamfering r1 and the second circular arc chamfering r2 phase are circumscribed, with the 3rd fire-retardant lapping layer (3) phase inscribe.
4. the big current-carrying capacity electric power cable of fugitive heat type according to claim 1 is it is characterised in that the first fire-retardant lapping layer
(12), the thickness of the second fire-retardant lapping layer (22) and the 3rd fire-retardant lapping layer (3) is equal.
5. the big current-carrying capacity electric power cable of fugitive heat type according to claim 1 is it is characterised in that the first fire-retardant lapping layer
(12), the thickness of the second fire-retardant lapping layer (22) and the 3rd fire-retardant lapping layer (3) is gradually incremented by.
6. the big current-carrying capacity electric power cable of fugitive heat type according to claim 1 is it is characterised in that the first fire-retardant lapping layer
(12), the thickness of the second polyvinyl chloride insulation layer (23) and polyvinyl chloride external sheath layer (5) is gradually incremented by.
7. the big current-carrying capacity electric power cable of fugitive heat type according to claim 1 is it is characterised in that center conductor (11) and outer
Wire (21) is the copper wire of strands.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410300821.7A CN104078145B (en) | 2014-06-27 | 2014-06-27 | Large-carrying-capacity power cable with heat easy to dissipate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410300821.7A CN104078145B (en) | 2014-06-27 | 2014-06-27 | Large-carrying-capacity power cable with heat easy to dissipate |
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| Publication Number | Publication Date |
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| CN104078145A CN104078145A (en) | 2014-10-01 |
| CN104078145B true CN104078145B (en) | 2017-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410300821.7A Expired - Fee Related CN104078145B (en) | 2014-06-27 | 2014-06-27 | Large-carrying-capacity power cable with heat easy to dissipate |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104599773A (en) * | 2015-01-20 | 2015-05-06 | 安徽德源电缆集团有限公司 | High temperature resistance and fire prevention multifunctional cable |
| CN105913965B (en) * | 2016-05-30 | 2017-12-19 | 国网山东省电力公司聊城供电公司 | A kind of optical electrical hybrid cable |
| CN106601362A (en) * | 2016-12-09 | 2017-04-26 | 晋源电气集团股份有限公司 | Large-current-carrying high-heat-dissipation multicore power cable |
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| WO1999043187A1 (en) * | 1998-02-20 | 1999-08-26 | G.H. Induction Deutschland Induktions-Erwärmungs-Anlagen GmbH | Induction heating of metals |
| CN202584848U (en) * | 2012-03-29 | 2012-12-05 | 安徽太平洋电缆集团有限公司 | High temperature-resisting anticorrosion computer cable |
| CN203013317U (en) * | 2012-11-05 | 2013-06-19 | 安徽金桥电缆有限公司 | Heat-radiation-type instrument control cable |
| CN103617836A (en) * | 2013-12-06 | 2014-03-05 | 上海特种电线电缆（集团）有限公司 | Nanometer type super-A-class flame-retardant power cable |
| CN203607151U (en) * | 2013-12-17 | 2014-05-21 | 加铝（天津）铝合金产品有限公司 | Aluminum-alloy-conductor variable frequency cable |
| CN203931601U (en) * | 2014-06-27 | 2014-11-05 | 安徽弘毅电缆集团有限公司 | A kind of easily large ampacity electric power cable of heat radiating type |
-
2014
- 2014-06-27 CN CN201410300821.7A patent/CN104078145B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999043187A1 (en) * | 1998-02-20 | 1999-08-26 | G.H. Induction Deutschland Induktions-Erwärmungs-Anlagen GmbH | Induction heating of metals |
| CN202584848U (en) * | 2012-03-29 | 2012-12-05 | 安徽太平洋电缆集团有限公司 | High temperature-resisting anticorrosion computer cable |
| CN203013317U (en) * | 2012-11-05 | 2013-06-19 | 安徽金桥电缆有限公司 | Heat-radiation-type instrument control cable |
| CN103617836A (en) * | 2013-12-06 | 2014-03-05 | 上海特种电线电缆（集团）有限公司 | Nanometer type super-A-class flame-retardant power cable |
| CN203607151U (en) * | 2013-12-17 | 2014-05-21 | 加铝（天津）铝合金产品有限公司 | Aluminum-alloy-conductor variable frequency cable |
| CN203931601U (en) * | 2014-06-27 | 2014-11-05 | 安徽弘毅电缆集团有限公司 | A kind of easily large ampacity electric power cable of heat radiating type |
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Granted publication date: 20170125 Termination date: 20180627 |