CN103871646B - A kind of power cable - Google Patents
A kind of power cable Download PDFInfo
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- CN103871646B CN103871646B CN201410063352.1A CN201410063352A CN103871646B CN 103871646 B CN103871646 B CN 103871646B CN 201410063352 A CN201410063352 A CN 201410063352A CN 103871646 B CN103871646 B CN 103871646B
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Abstract
The invention discloses a kind of power cable that the present invention proposes, comprise two first conductors, two second conductors, the cross section of the first conductor is fan-shaped, the cross section of the second conductor is circular, two first conductors are symmetrical arranged, two second conductors to be arranged between two first conductors and tangent with the side of two first conductors respectively, at two first conductors, two second conductors outer coated fire-retardant belting layer, steel wire woven armored layer, external sheath layers successively, outside two first conductors, be provided with bending kidney-shaped gap-filler bar.Stability Analysis of Structures of the present invention; electric conductivity is excellent; under rated voltage 0.6/1kV condition of power supply; the insulating reliability of polyvinyl chloride insulation layer is large; fire resistance is good; when power cable is on fire, the carburization zone that fire-retardant belting layer, external sheath layer form heat insulation resistance oxygen plays protection to cable, thus stops flame cable expansion burning.
Description
Technical field
The present invention relates to technical field of electric wires and cables, particularly relate to a kind of power cable.
Background technology
Power cable be used in send out, join, defeated, become, forceful electric power delivery of electrical energy in supply line, the electric current passed through large (tens peaces are to a few kilo-ampere), voltage high (220V to 5000kV and more than).
Power cable be divided into some kinds by principal characters such as its scope of application, design feature and performance requirements, power cable is one wherein.Power cable, in be mainly laid in indoor, tunnel and in pipeline, also can buried-pipe laying.Existing common 0.6/1kV power cable, there is structural stability difference and incendive problem, this adds certain difficulty to the design of power cable, therefore the lsafety level of electric wiring and the fire-retardant problem of cable more and more cause the concern of people, the flame-retarded comprehensive developing direction having become cable industry of cable.
The current capacity of power cable is usually relevant with the sectional area of conductor thread core simultaneously, conductor temperature can be made when the current increases to raise, the temperature of the insulating barrier of conductor outer cladding exceedes the change that can cause in insulating barrier generation performance in limited time, thus the insulating reliability of insulating barrier is reduced greatly, affect the useful life of power cable.
Summary of the invention
In order to solve the technical problem existed in background technology, the present invention proposes a kind of power cable, have Stability Analysis of Structures, electric conductivity is excellent, good flame retardation effect, improves the lsafety level of electric wiring.
A kind of power cable that the present invention proposes, comprise two first conductors, two second conductors, the cross section of the first conductor is fan-shaped, the cross section of the second conductor is circular, first conductor is made up of the first wire and the polyvinyl chloride insulation layer be coated on outside the first wire, and the second conductor is made up of the second wire and the polyvinyl chloride insulation layer be coated on outside the second wire; Two first conductors are symmetrical arranged, two second conductors to be arranged between two first conductors and tangent with the side of two first conductors respectively, at two first conductors, two second conductors outer coated fire-retardant belting layer, steel wire woven armored layer, external sheath layers successively, bending kidney-shaped gap-filler bar is provided with outside two second conductors, gap-filler bar two ends lean with the side of two first conductors respectively, inner side and the second conductor lean, and outside and fire-retardant belting layer lean.The present invention adds bending kidney-shaped gap-filler bar in power cable, and the cable core of power cable can be made more tight, prevents cable from causing the first conductor, the second conductor dislocation when distortion or extruding, ensure that the stable of the electric conductivity of power cable.
Preferably, the outer circumferential edges of gap-filler bar and two first fan-shaped edges of conductor are in circumferentially same.
Preferably, the fan-shaped summit of two first conductors is all positioned at the center of power cable.
Preferably, the polyvinyl chloride insulation layer thickness on the first conductor is equal with the polyvinyl chloride insulation layer thickness on the second conductor.
Preferably, the first wire is the copper wire of strands, and the second wire is single copper core.
Preferably, the polyvinyl chloride insulation material that the polyvinyl chloride insulation layer on the first conductor, the polyvinyl chloride insulation layer on the second conductor adopt, comprises following raw material: Corvic: 70 ~ 80 parts; Polyvinyl resin: 20 ~ 30 parts; Plasticizer: 30 ~ 50 parts; Stabilizer: 10 ~ 15 parts; Fire retardant: 10 ~ 35 parts; Filler: 15 ~ 35 parts; Processing aid: 4 ~ 8 parts.The polyvinyl chloride insulation material adopting above-mentioned raw materials to make, has good fire resistance, pinching performance, crushes performance and flexing performance, also have good softness and good processing characteristics.
Preferably, the polyvinyl chloride insulation material that the polyvinyl chloride insulation layer on the first conductor, the polyvinyl chloride insulation layer on the second conductor adopt, comprises following raw material: Corvic: 70 ~ 75 parts; Polyvinyl resin: 25 ~ 30 parts; Plasticizer: 40 ~ 45 parts; Stabilizer: 13 ~ 15 parts; Fire retardant: 20 ~ 25 parts; Filler: 25 ~ 30 parts; Processing aid: 5 ~ 6 parts.
The present invention meets power supply that rated voltage is 0.6/1kV, distribution line, is applicable to the places such as the higher power station of cable laying dense degree, subway, tunnel, skyscraper, large industrial enterprise, oil field, colliery.The present invention allows working temperature to be generally no more than 70 DEG C for a long time, and insulation temperature is 105 DEG C, during short circuit, and the highest refractory temperature is no more than 160 DEG C.Electric conductivity of the present invention is excellent, first conductor is used for high-voltage alternating circuit, and the second conductor is used for low-voltage alternating-current circuit, to meet different current capacities, and the second conductor to be located between the first conductor and at the second conductor arranged outside filler bar, to ensure the compactedness of cable; First wire, the second wire are all coated with polyvinyl chloride insulation layer outward, under rated voltage 0.6/1kV condition of power supply, the insulating reliability of polyvinyl chloride insulation layer is large, fire resistance is good, when power cable is on fire, the carburization zone that fire-retardant belting layer, external sheath layer form heat insulation resistance oxygen plays protection to cable, thus stops flame cable expansion burning; Steel wire woven armored layer also improves the shielding of cable in addition, thus improves the useful life of cable.
Accompanying drawing explanation
Fig. 1 is the cross section structure schematic diagram of a kind of power cable that the present invention proposes.
Embodiment
As shown in Figure 1, Fig. 1 is the cross section structure schematic diagram of a kind of power cable that the present invention proposes.
With reference to Fig. 1, a kind of power cable that the present invention proposes, comprise two first conductors 1, two second conductors 2, the cross section of the first conductor 1 is fan-shaped, the cross section of the second conductor 2 is circular, first conductor 1 is made up of the first wire 11 and the polyvinyl chloride insulation layer 12 be coated on outside the first wire 11, second conductor 2 is made up of the second wire 21 and the polyvinyl chloride insulation layer 22 be coated on outside the second wire 21, first wire 11 is the copper wire of strands, second wire 21 is single copper core, polyvinyl chloride insulation layer 12 thickness on first conductor 1 is equal with polyvinyl chloride insulation layer 22 thickness on the second conductor 2, two first conductors 1 are symmetrical arranged, two second conductors 2 to be arranged between two first conductors 1 and tangent with the side of two first conductors 1 respectively, at two first conductors, 1, two second conductors 2 outer coated fire-retardant belting layer 4, steel wire woven armored layer 5, external sheath layer 6 successively, bending kidney-shaped gap-filler bar 3 is provided with outside two second conductors 2, gap-filler bar 3 two ends lean with the side of two first conductors 1 respectively, inner side and the second conductor 2 lean, and outside and fire-retardant belting layer 4 lean.The outer circumferential edges of gap-filler bar 3 and two first fan-shaped edges of conductor 1 are in circumferentially same, and the fan-shaped summit of two first conductors 1 is all positioned at the center of power cable.The present invention adds bending kidney-shaped gap-filler bar 3 in power cable, and the cable core of power cable can be made more tight, prevents cable from causing the first conductor 1, second conductor 2 to misplace when distortion or extruding, ensure that the stable of the electric conductivity of power cable.
Wherein, the polyvinyl chloride insulation material that the polyvinyl chloride insulation layer 22 on polyvinyl chloride insulation layer 12, second conductor 2 on the first conductor 1 adopts, comprises following raw material: Corvic: 70 ~ 80 parts; Polyvinyl resin: 20 ~ 30 parts; Plasticizer: 30 ~ 50 parts; Stabilizer: 10 ~ 15 parts; Fire retardant: 10 ~ 35 parts; Filler: 15 ~ 35 parts; Processing aid: 4 ~ 8 parts.The polyvinyl chloride insulation material adopting above-mentioned raw materials to make, has good fire resistance, pinching performance, crushes performance and flexing performance, also have good softness and good processing characteristics.
In a particular embodiment, the polyvinyl chloride insulation material that the polyvinyl chloride insulation layer 22 on polyvinyl chloride insulation layer 12, second conductor 2 on the first conductor 1 adopts, comprises following raw material: Corvic: 75 parts; Polyvinyl resin: 25 parts; Plasticizer: 40 parts; Stabilizer: 13 parts; Fire retardant: 25 parts; Filler: 30 parts; Processing aid: 6 parts.
The present invention meets power supply that rated voltage is 0.6/1kV, distribution line, is applicable to the places such as the higher power station of cable laying dense degree, subway, tunnel, skyscraper, large industrial enterprise, oil field, colliery.The present invention allows working temperature to be generally no more than 70 DEG C for a long time, and insulation temperature is 105 DEG C, during short circuit, and the highest refractory temperature is no more than 160 DEG C.Electric conductivity of the present invention is excellent, first conductor 1 for high-voltage alternating circuit, the second conductor 3 for low-voltage alternating-current circuit, to meet different current capacities, and the second conductor 2 to be located between the first conductor 1 and at the second conductor 2 arranged outside filler bar 3, to ensure the compactedness of cable; First wire 1, second wire 2 is outer is all coated with polyvinyl chloride insulation layer, under rated voltage 0.6/1kV condition of power supply, the insulating reliability of polyvinyl chloride insulation layer is large, fire resistance is good, when power cable is on fire, the carburization zone that fire-retardant belting layer 4, external sheath layer 6 form heat insulation resistance oxygen plays protection to cable, thus stops flame cable expansion burning; Steel wire woven armored layer 5 also improves the shielding of cable in addition, thus improves the useful life of cable.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (5)
1. a power cable, it is characterized in that, comprise two first conductors (1), two second conductors (2), the cross section of the first conductor (1) is fan-shaped, the cross section of the second conductor (2) is circular, first conductor (1) is by the first wire (11) and be coated on the first wire (11) polyvinyl chloride insulation layer (12) outward and form, and the second conductor (2) is by the second wire (21) and be coated on the second wire (21) polyvinyl chloride insulation layer (22) outward and form, two first conductors (1) are symmetrical arranged, two second conductors (2) to be arranged between two first conductors (1) and tangent with the side of two first conductors (1) respectively, two first conductors (1), two second conductors (2) coated fire-retardant belting layer (4) successively outward, steel wire woven armored layer (5), external sheath layer (6), bending kidney-shaped gap-filler bar (3) is provided with in two second conductor (2) outsides, gap-filler bar (3) two ends lean with the side of two first conductors (1) respectively, inner side and the second conductor (2) lean, outside and fire-retardant belting layer (4) lean.
2. power cable according to claim 1, is characterized in that, outer circumferential edges and two fan-shaped edges of first conductor (1) of gap-filler bar (3) are in circumferentially same.
3. power cable according to claim 1 and 2, is characterized in that, the fan-shaped summit of two first conductors (1) is all positioned at the center of power cable.
4. power cable according to claim 1, is characterized in that, polyvinyl chloride insulation layer (12) thickness on the first conductor (1) is equal with polyvinyl chloride insulation layer (22) thickness on the second conductor (2).
5. power cable according to claim 1, is characterized in that, the copper wire that the first wire (11) is strands, and the second wire (21) is single copper core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410063352.1A CN103871646B (en) | 2014-02-24 | 2014-02-24 | A kind of power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410063352.1A CN103871646B (en) | 2014-02-24 | 2014-02-24 | A kind of power cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103871646A CN103871646A (en) | 2014-06-18 |
| CN103871646B true CN103871646B (en) | 2016-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410063352.1A Expired - Fee Related CN103871646B (en) | 2014-02-24 | 2014-02-24 | A kind of power cable |
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| Country | Link |
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| CN (1) | CN103871646B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104200907B (en) * | 2014-09-11 | 2016-09-07 | 安徽恒晶电缆集团有限公司 | A kind of Aero-Space high temperature resistance control cable |
| CN106816210A (en) * | 2016-12-05 | 2017-06-09 | 国网江苏省电力公司盐城供电公司 | A kind of power cable |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101083157A (en) * | 2006-05-30 | 2007-12-05 | 上海亚龙工业（集团）有限公司 | Radiation resistant power cable for nuclear island of nuclear plant and process for producing the same |
| CN201413724Y (en) * | 2009-02-20 | 2010-02-24 | 深圳市大为集团有限公司 | PVC insulated power cable |
| CN202473380U (en) * | 2012-02-29 | 2012-10-03 | 江苏亚飞电线电缆有限公司 | Crosslinked polyethylene insulated steel wire armoured polyvinyl chloride sheath power cable |
| CN202549475U (en) * | 2012-03-30 | 2012-11-21 | 安徽华源电缆集团有限公司 | Metallic shielded power cable |
| CN202855388U (en) * | 2012-06-12 | 2013-04-03 | 安徽五洲特种电缆集团有限公司 | Polrvinyl chloride insulated and sheathed power cable |
| CN203826099U (en) * | 2014-02-24 | 2014-09-10 | 安徽华联电缆集团有限公司 | Power cable |
-
2014
- 2014-02-24 CN CN201410063352.1A patent/CN103871646B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101083157A (en) * | 2006-05-30 | 2007-12-05 | 上海亚龙工业（集团）有限公司 | Radiation resistant power cable for nuclear island of nuclear plant and process for producing the same |
| CN201413724Y (en) * | 2009-02-20 | 2010-02-24 | 深圳市大为集团有限公司 | PVC insulated power cable |
| CN202473380U (en) * | 2012-02-29 | 2012-10-03 | 江苏亚飞电线电缆有限公司 | Crosslinked polyethylene insulated steel wire armoured polyvinyl chloride sheath power cable |
| CN202549475U (en) * | 2012-03-30 | 2012-11-21 | 安徽华源电缆集团有限公司 | Metallic shielded power cable |
| CN202855388U (en) * | 2012-06-12 | 2013-04-03 | 安徽五洲特种电缆集团有限公司 | Polrvinyl chloride insulated and sheathed power cable |
| CN203826099U (en) * | 2014-02-24 | 2014-09-10 | 安徽华联电缆集团有限公司 | Power cable |
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| Publication number | Publication date |
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| CN103871646A (en) | 2014-06-18 |
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Granted publication date: 20160113 Termination date: 20190224 |