CN201387759Y - Power cable with polyolefin insulation and polyvinyl chloride (PVC) sheath - Google Patents
Power cable with polyolefin insulation and polyvinyl chloride (PVC) sheath Download PDFInfo
- Publication number
- CN201387759Y CN201387759Y CN200920085320U CN200920085320U CN201387759Y CN 201387759 Y CN201387759 Y CN 201387759Y CN 200920085320 U CN200920085320 U CN 200920085320U CN 200920085320 U CN200920085320 U CN 200920085320U CN 201387759 Y CN201387759 Y CN 201387759Y
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- cable
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- power cable
- sheath
- pvc
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Abstract
A power cable with a polyolefin insulation and polyvinyl chloride (PVC) sheath comprises a central metal conductor, an insulation layer and a sheath layer. The power cable is characterized in that the outside of the metal conductor (1) is coated by a nano-polyolefin insulation layer (2); the external-most layer of the power cable is a PVC sheath layer (4); and a layer of non-woven cloth wrapping belt (3) is also arranged between the insulation layer (2) and the sheath layer (4). In the utility model, the high temperature resistance capability of the cable is improved from normal 75 DEG C to 105 DEG C, which is equivalent to that the current-carrying capability of the cable with the same section area is improved; alternatively the cost of the cable with the same current-carrying capability is reduced greatly. The adoption of the non-woven cloth wrapping belt leads the cable to also have dampproof performance simultaneously; and the sheath with the flame-retarding performance leads the cable to also have flame-retarding performance.
Description
Technical field
The utility model relates to power cable, is a kind of polyolefin insulation pvc sheath power cable specifically.
Background technology
For power cable, its current capacity is only considered the sectional area of conductor thread core usually, this is because the electric current increase can make conductor temperature raise, and the insulating barrier that an implied condition is arranged here is the conductor outsourcing can only bear 75 ℃ usually, and good material can reach 90 ℃ or higher.The words that temperature surpasses the upper limit can cause the change on the insulating barrier generation performance, and insulating reliability greatly reduces, and higher temperature can cause insulating barrier emerge poisonous dense smoke even burning.This poisonous dense smoke is called halogen gas, is that power line burning back produces the principal element of fatal harm.Common cable all has certain water penetration simultaneously, and cable is as if long-time running under the environment of humidity, and extraneous moisture will form the water tree at leisure to the insulation internal penetration, finally causes cable insulation to puncture, and influences the useful life of cable.
Summary of the invention
The purpose of this utility model provides and a kind ofly can improve the power cable current capacity and strengthen polyolefin insulation pvc sheath power cable moistureproof, fire resistance.
Described polyolefin insulation pvc sheath power cable, the metallic conductor, insulating barrier, the restrictive coating that comprise the center, it is characterized in that: clad nano polyolefin insulation layer outside the described metallic conductor, outermost layer is a PVC pvc sheath layer, also has the layer of non-woven fabric twining package tape between insulating barrier and restrictive coating.
Described restrictive coating can also be a flame-proof PVC sheath.
Described metallic conductor can be copper, aluminium or copper-covered aluminum-core.
The utility model has improved the heat-resisting ability of cable, bring up to 105 ℃ by common 75 ℃, its current capacity of cable that is equivalent to same sectional area is improved, its cost of cable of same current capacity has obtained significantly reducing in other words, this cable has also adopted the nonwoven fabrics twining package tape simultaneously, make cable also have humidity resistance simultaneously, the sheath that has fire resistance makes cable also have fire-retardant performance.
Description of drawings
Fig. 1 is the utility model structural representation.
Among the figure: 1-conductor, 2-insulating barrier, 3-twining package tape, 4-restrictive coating.
Embodiment
Below in conjunction with accompanying drawing the utility model is further specified: polyolefin insulation pvc sheath power cable as shown in fig. 1, the metallic conductor 1, insulating barrier 2, the restrictive coating 4 that comprise the center, clad nano polyolefin insulation layer 2 outside the described metallic conductor 1, outermost layer is a PVC pvc sheath layer 4, also has layer of non-woven fabric twining package tape 3 between insulating barrier 2 and restrictive coating 4.Make the utility model cable have good heatproof, humidity resistance.
Described restrictive coating 4 can also be a flame-proof PVC sheath.Adopt the cable of fire retardant jacket to have outside heatproof, the humidity resistance, also have fire resistance.
Described metallic conductor 1 can be copper, aluminium or copper-covered aluminum-core.
Because insulating barrier 2 adopts nanometer polyolefin insulation material, its resistance to elevated temperatures rises to 105 ℃, also possesses the environmental-protecting performance of low smoke and zero halogen simultaneously.The nanometer polyolefin can replace the cross-linking radiation material, and possesses the low smoke and zero halogen performance, and the polyolefinic processing technology of nanometer is simple, has environmental-protecting performance, and material can reclaim repeated use.Heat-resisting ability improves its current capacity of cable that is equivalent to same sectional area and is improved, and its cost of cable of same current capacity has obtained significantly reducing in other words, and security performance has obtained very big lifting.Excessive in conductor current, when making conductor temperature be elevated to 105 ℃, cable still is operated in the normal working temperature, and common cable carries same electric current and need use the long-pending conductor in heavy in section more, and cost of investment is raise.The utility model can be resisted wet environment work simultaneously.Adopt the cable of fire retardant jacket also to have fire resistance.
Claims (3)
1. polyolefin insulation pvc sheath power cable, the metallic conductor, insulating barrier, the restrictive coating that comprise the center, it is characterized in that: clad nano polyolefin insulation layer (2) outside the described metallic conductor (1), outermost layer is a PVC pvc sheath layer (4), also has layer of non-woven fabric twining package tape (3) between insulating barrier (2) and restrictive coating (4).
2. polyolefin insulation pvc sheath power cable according to claim 1 is characterized in that: described restrictive coating (4) can also be a flame-proof PVC sheath.
3. polyolefin insulation pvc sheath power cable according to claim 1 is characterized in that: described metallic conductor (1) can be copper, aluminium or copper-covered aluminum-core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920085320U CN201387759Y (en) | 2009-04-24 | 2009-04-24 | Power cable with polyolefin insulation and polyvinyl chloride (PVC) sheath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920085320U CN201387759Y (en) | 2009-04-24 | 2009-04-24 | Power cable with polyolefin insulation and polyvinyl chloride (PVC) sheath |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201387759Y true CN201387759Y (en) | 2010-01-20 |
Family
ID=41580300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920085320U Expired - Fee Related CN201387759Y (en) | 2009-04-24 | 2009-04-24 | Power cable with polyolefin insulation and polyvinyl chloride (PVC) sheath |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201387759Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD868701S1 (en) | 2014-08-07 | 2019-12-03 | Henkel Ag & Co. Kgaa | Overhead transmission conductor cable |
-
2009
- 2009-04-24 CN CN200920085320U patent/CN201387759Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD868701S1 (en) | 2014-08-07 | 2019-12-03 | Henkel Ag & Co. Kgaa | Overhead transmission conductor cable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100120 Termination date: 20120424 |