CN203826099U - Power cable - Google Patents
Power cable Download PDFInfo
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- CN203826099U CN203826099U CN201420079003.4U CN201420079003U CN203826099U CN 203826099 U CN203826099 U CN 203826099U CN 201420079003 U CN201420079003 U CN 201420079003U CN 203826099 U CN203826099 U CN 203826099U
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- conductors
- conductor
- power cable
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- wire
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Abstract
The utility model discloses a power cable which includes two first conductors and two second conductors. The cross section of each first conductor is fan-shaped. The cross section of each second conductor is a circle. The two first conductors are symmetrically arranged and the two second conductors are arranged between the two first conductors and tangent to the side edges of the two first conductors. The two first conductors and the two second conductors are wrapped externally and sequentially with a flame-retardant wrapping-tape layer, a steel-wire woven armor layer and an external sheath layer. The outer sides of the two first conductors are provided with bent waist-shaped gap filling bars. The power cable is stable in structure and excellent in conductive performance; under a power-supplying condition that a rated voltage is 0.6/1kV, a polyvinyl chloride insulating layer is great in insulating reliability and great in flame retardant performance; and when a power cable is on fire, the flame retardant wrapping-tape layer and the external sheath layer form a thermal-insulation oxygen-blocking carbonization layer to protect the cable so that expanded burning of the flamed cable is prevented.
Description
Technical field
The utility model relates to technical field of electric wires and cables, relates in particular to a kind of power cable.
Background technology
Power cable is used in and sends out, joins, the forceful electric power delivery of electrical energy in defeated, change, supply line, the electric current passing through large (tens peaces are to several kilo-amperes), voltage high (220V to 5000kV and more than).
Power cable by principal characters such as its scope of application, design feature and performance requirements, be divided into some kinds, power cable is wherein a kind of.Power cable, in indoor, the tunnel of being mainly laid in and in pipeline, also can buried-pipe laying.Existing common 0.6/1kV power cable, there is the poor and incendive problem of structural stability, this has increased 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 people's concern, and fire-retardantization of cable become a comprehensive developing direction of cable industry.
The current capacity of power cable is conventionally relevant with the sectional area of conductor thread core simultaneously, when increasing, electric current can make conductor temperature raise, the temperature of the insulating barrier of conductor outer cladding surpasses the upper 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 power cable.
Utility model content
In order to solve the technical problem existing in background technology, the utility model proposes a kind of power cable, there is Stability Analysis of Structures, electric conductivity is good, and good flame retardation effect has improved the lsafety level of electric wiring.
A kind of power cable the utility model proposes, comprise two the first conductors, two the second conductors, the cross section of the first conductor is fan-shaped, the cross section of the second conductor is circular, the first conductor consists of the first wire and the polyvinyl chloride insulation layer that is coated on outside the first wire, and the second conductor consists of the second wire and the polyvinyl chloride insulation layer that is coated on outside the second wire; Two the first conductors are symmetrical arranged, two the second conductors are arranged between two the first conductors and are tangent with the side of two the first conductors respectively, at two the first conductors, two the second conductors, be coated successively fire-retardant belting layer, steel wire woven armored layer, external sheath layer outward, in two the second conductor outsides, be provided with crooked kidney-shaped gap-filler shall bar, gap-filler shall bar two ends lean with the side of two the first conductors respectively, inner side leans with the second conductor, and outside and fire-retardant belting layer lean.The utility model adds crooked kidney-shaped gap-filler shall bar in power cable, can make the cable core of power cable tightr, prevents that cable from causing the first conductor, the second conductor dislocation in distortion or when extruding, has guaranteed electric conductivity stable of power cable.
Preferably, the outer circumferential edges of gap-filler shall bar and two the first fan-shaped edges of conductor are on same circumference.
Preferably, the fan-shaped summit of two the first conductors is all positioned at the center of power cable.
Preferably, the polyvinyl chloride insulation layer thickness on the first conductor equates with the polyvinyl chloride insulation layer thickness on the second conductor.
Preferably, the copper wire that the first wire is strands, 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 weight portion 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 that adopts above-mentioned raw materials to make, has good fire resistance, pinching performance, presses and grind performance and flexing performance, also has 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 weight portion 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 utility model meets power supply, the distribution line that rated voltage is 0.6/1kV, 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 ℃ for a long time, and insulation temperature is 105 ℃, and during short circuit, the highest refractory temperature is no more than 160 ℃.The utility model electric conductivity is good, the first conductor is for high-voltage alternating circuit, and the second conductor is for low-voltage alternating-current circuit, to meet different current capacities, and the second conductor is located between the first conductor and at the second conductor arranged outside filler bar, guarantee the compactedness of cable; The 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, thereby stops flame cable expansion burning; Steel wire woven armored layer has also improved the shielding of cable in addition, thereby has improved 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 utility model proposes.
Embodiment
As shown in Figure 1, Fig. 1 is the cross section structure schematic diagram of a kind of power cable that the utility model proposes.With reference to Fig. 1, a kind of power cable the utility model proposes, comprise two the first conductors 1, two the second conductors 2, the cross section of the first conductor 1 is fan-shaped, the cross section of the second conductor 2 is circular, the first conductor 1 consists of the first wire 11 and the polyvinyl chloride insulation layer 12 that is coated on outside the first wire 11, the second conductor 2 consists of the second wire 21 and the polyvinyl chloride insulation layer 22 that is coated on outside the second wire 21, the copper wire that the first wire 11 is strands, the second wire 21 is single copper core, polyvinyl chloride insulation layer 12 thickness on the first conductor 1 equate with polyvinyl chloride insulation layer 22 thickness on the second conductor 2, two the first conductors 1 are symmetrical arranged, two the second conductors 2 are arranged between two the first conductors 1 and are tangent with the side of two the first conductors 1 respectively, coated fire-retardant belting layer 4, steel wire woven armored layer 5, external sheath layer 6 successively outside two the first conductors 1, two the second conductors 2, in two the second conductor 2 outsides, be provided with crooked kidney-shaped gap-filler shall bar 3, gap-filler shall bar 3 two ends lean with the side of two the first conductors 1 respectively, inner side leans with the second conductor 2, and outside and fire-retardant belting layer 4 lean.The outer circumferential edges of gap-filler shall bar 3 and two the first fan-shaped edges of conductor 1 are on same circumference, and the fan-shaped summit of two the first conductors 1 is all positioned at the center of power cable.The utility model adds crooked kidney-shaped gap-filler shall bar 3 in power cable, can make the cable core of power cable tightr, prevents that cable from causing the first conductor 1, the second conductor 2 dislocation in distortion or when extruding, has guaranteed electric conductivity stable of power cable.
Wherein, the polyvinyl chloride insulation material that the polyvinyl chloride insulation layer 12 on the first conductor 1, the polyvinyl chloride insulation layer 22 on the second conductor 2 adopt, comprises following weight portion 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 that adopts above-mentioned raw materials to make, has good fire resistance, pinching performance, presses and grind performance and flexing performance, also has good softness and good processing characteristics.
In specific embodiment, the polyvinyl chloride insulation material that the polyvinyl chloride insulation layer 12 on the first conductor 1, the polyvinyl chloride insulation layer 22 on the second conductor 2 adopt, comprises following weight portion 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 utility model meets power supply, the distribution line that rated voltage is 0.6/1kV, 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 ℃ for a long time, and insulation temperature is 105 ℃, and during short circuit, the highest refractory temperature is no more than 160 ℃.The utility model the utility model electric conductivity is good, the first conductor 1 is for high-voltage alternating circuit, the second conductor 3 is for low-voltage alternating-current circuit, to meet different current capacities, and the second conductor 2 is located between the first conductor 1 and at the second conductor 2 arranged outside filler bars 3, guarantee the compactedness of cable; The first wire 1, the outer polyvinyl chloride insulation layer that is all coated with of the second wire 2, 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, thereby stops flame cable expansion burning; Steel wire woven armored layer 5 has also improved the shielding of cable in addition, thereby has improved the useful life of cable.
The above; it is only preferably embodiment of the utility model; but protection range of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; according to the technical solution of the utility model and utility model design thereof, be equal to replacement or changed, within all should being encompassed in protection range of the present utility model.
Claims (5)
1. a power cable, it is characterized in that, comprise two the first conductors (1), two the second conductors (2), the cross section of the first conductor (1) is fan-shaped, the cross section of the second conductor (2) is circular, the first conductor (1) is by the first wire (11) and be coated on outer polyvinyl chloride insulation layer (12) formation of the first wire (11), and the second conductor (2) is by the second wire (21) and be coated on outer polyvinyl chloride insulation layer (22) formation of the second wire (21), two the first conductors (1) are symmetrical arranged, two the second conductors (2) are arranged between two the first conductors (1) and are tangent with the side of two the first conductors (1) respectively, at two the first conductors (1), the outer coated fire-retardant belting layer (4) successively of two the second conductors (2), steel wire woven armored layer (5), external sheath layer (6), in two the second conductors (2) outside, be provided with crooked kidney-shaped gap-filler shall bar (3), gap-filler shall bar (3) two ends lean with the side of two the first conductors (1) respectively, inner side leans with the second conductor (2), outside leans with fire-retardant belting layer (4).
2. power cable according to claim 1, is characterized in that, the outer circumferential edges of gap-filler shall bar (3) and the fan-shaped edge of two the first conductors (1) are on same circumference.
3. power cable according to claim 1 and 2, is characterized in that, the fan-shaped summit of two the 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) equates 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 |
|---|---|---|---|
| CN201420079003.4U CN203826099U (en) | 2014-02-24 | 2014-02-24 | Power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420079003.4U CN203826099U (en) | 2014-02-24 | 2014-02-24 | Power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203826099U true CN203826099U (en) | 2014-09-10 |
Family
ID=51481573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420079003.4U Withdrawn - After Issue CN203826099U (en) | 2014-02-24 | 2014-02-24 | Power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203826099U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103871646A (en) * | 2014-02-24 | 2014-06-18 | 安徽华联电缆集团有限公司 | Power cable |
-
2014
- 2014-02-24 CN CN201420079003.4U patent/CN203826099U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103871646A (en) * | 2014-02-24 | 2014-06-18 | 安徽华联电缆集团有限公司 | Power cable |
| CN103871646B (en) * | 2014-02-24 | 2016-01-13 | 安徽华联电缆集团有限公司 | A kind of power cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140910 Effective date of abandoning: 20160113 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |