CN202694965U - Polyimide-teflon insulating polyethylene jacketed high-voltage direct-current cable - Google Patents
Polyimide-teflon insulating polyethylene jacketed high-voltage direct-current cable Download PDFInfo
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- CN202694965U CN202694965U CN 201220228192 CN201220228192U CN202694965U CN 202694965 U CN202694965 U CN 202694965U CN 201220228192 CN201220228192 CN 201220228192 CN 201220228192 U CN201220228192 U CN 201220228192U CN 202694965 U CN202694965 U CN 202694965U
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- film wrapped
- polyimide
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Abstract
The utility model belongs to the field of cables, and specifically relates to a polyimide-teflon insulating polyethylene jacketed high-voltage direct-current cable. The cable is provided with a polrvinyl chloride sheath, a teflon film wrapped insulating layer, a polyimide film wrapped insulating layer, a copper conductor and a semiconductive shielding layer, wherein the semiconductive shielding layer is arranged on the exterior of the copper conductor, the polyimide film wrapped insulating layer is arranged on the exterior of the semiconductive shielding layer, the teflon film wrapped insulating layer is arranged on the exterior of the polyimide film wrapped insulating layer, and the polrvinyl chloride sheath is arranged on the exterior of the teflon film wrapped insulating layer. According to the utility model, an insulating structure is formed by combining the teflon film wrapped insulating layer and the polyimide film wrapped insulating layer, so that an electric breakdown phenomenon of the cable can be effectively prevented.
Description
Technical field
The utility model belongs to field of cables, is specially a kind of copper core polyimides/polytetrafluoroethylcombination combination insulation pe sheath high voltage direct current cable.
Background technology
At present, the voltage that the high-power high voltage cable of widely applying both at home and abroad bears is alternating voltage, and under the alternating voltage operating state, the main puncture mechanism of cable is thermal breakdown, lessly embodies electrical breakdown.
High voltage direct current cable is used for the flow directing device of electrostatic painting, electrostatic separation, quiet flocking and other weak current high pressure, does the power supply lead wire, can improve the efficient of long distance power transmission.The structure of high voltage direct current cable is: be coated with successively interior shield semiconductors layer, insulating barrier, outer half layer body electric screen layer, metal screen layer, expansion glue belt, aluminum slice layer etc. in the conductor outside, the puncture mechanism of direct current high voltage cable is less to appear in the newspapers.After deliberation, the puncture of cable under high direct voltage mainly is because a small amount of air gap of the inner wire outer surface that electrical breakdown, the especially electric field strength that a small amount of air-gap causes in the cable insulation is comparatively concentrated becomes weak spot under the effect of electric field.Therefore, how to guarantee that the whole cable insulation property become key.
The utility model content
The purpose of this utility model is to provide a kind of copper core polyimides/polytetrafluoroethylcombination combination insulation pe sheath high voltage direct current cable, solves the problems such as electrical breakdown that existing cable exists.
The technical solution of the utility model is:
A kind of polyimides-teflon insulation pe sheath high voltage direct current cable, this cable is provided with pvc sheath, polytetrafluoroethylene film wrapping insulation layer, polyimide film wrapping insulation layer, copper conductor, semiconductive shielding layer, the outside of copper conductor is semiconductive shielding layer, the outside of semiconductive shielding layer is the polyimide film wrapping insulation layer, the outside of polyimide film wrapping insulation layer is the polytetrafluoroethylene film wrapping insulation layer, and the outside of polytetrafluoroethylene film wrapping insulation layer is pvc sheath.
The beneficial effects of the utility model are:
1, the utility model adopts polytetrafluoroethylene film wrapping insulation layer and polyimide film wrapping insulation layer combined insulation structure, can effectively prevent the electric breakdown phenomena of cable.
2, the utility model adopts the polytetrafluoroethylene film wrapping insulation layer, and is high temperature resistant, uses working temperature to reach 250 ℃; Low temperature resistant, have good mechanical tenacity, even drop in temperature also can keep 5% percentage elongation to-196 ℃; Corrosion-resistant, to most of chemicals and solvent, show inertia, energy strong alkali-acid resistance, water and various organic solvent; Weather has aging life-span best in the plastics.
3, the utility model adopts the polyimide film wrapping insulation layer, polyimides is one of high-molecular organic material of combination property the best, high temperature resistant reaching more than 400 ℃, long-term serviceability temperature scope-200～300 ℃, without sharp melting point, high insulating property, 103 hertz of lower dielectric constants 4.0, dielectric loss only 0.004～0.007 belongs to F to H class F insulating material F.
4, the utility model adopts polyvinyl chloride (PVC) sheath, and its good flame retardation effect is widely used in fire prevention.
Description of drawings
Fig. 1 is structure cutaway view of the present utility model.
Among the figure, 1. polyvinyl chloride (PVC) sheath; 2. polytetrafluoroethylene film wrapping insulation layer; 3. polyimide film wrapping insulation layer; 4. copper conductor; 5. semiconductive shielding layer.
Embodiment
As shown in Figure 1, the utility model polyimides/teflon insulation pe sheath high voltage direct current cable, mainly comprise: polyvinyl chloride (PVC) sheath 1, polytetrafluoroethylene film wrapping insulation layer 2, polyimide film wrapping insulation layer 3, copper conductor 4, semiconductive shielding layer 5 etc., concrete structure is as follows:
The outside of copper conductor 4 is semiconductive shielding layer 5, the outside of semiconductive shielding layer 5 is polyimide film wrapping insulation layer 3, the outside of polyimide film wrapping insulation layer 3 is polytetrafluoroethylene film wrapping insulation layer 2, and the outside of polytetrafluoroethylene film wrapping insulation layer is polyvinyl chloride (PVC) sheath 1.
Claims (1)
1. polyimides-teflon insulation pe sheath high voltage direct current cable, it is characterized in that: this cable is provided with pvc sheath, polytetrafluoroethylene film wrapping insulation layer, polyimide film wrapping insulation layer, copper conductor, semiconductive shielding layer, the outside of copper conductor is semiconductive shielding layer, the outside of semiconductive shielding layer is the polyimide film wrapping insulation layer, the outside of polyimide film wrapping insulation layer is the polytetrafluoroethylene film wrapping insulation layer, and the outside of polytetrafluoroethylene film wrapping insulation layer is pvc sheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220228192 CN202694965U (en) | 2012-05-19 | 2012-05-19 | Polyimide-teflon insulating polyethylene jacketed high-voltage direct-current cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220228192 CN202694965U (en) | 2012-05-19 | 2012-05-19 | Polyimide-teflon insulating polyethylene jacketed high-voltage direct-current cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202694965U true CN202694965U (en) | 2013-01-23 |
Family
ID=47550547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220228192 Expired - Fee Related CN202694965U (en) | 2012-05-19 | 2012-05-19 | Polyimide-teflon insulating polyethylene jacketed high-voltage direct-current cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202694965U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114283974A (en) * | 2021-12-20 | 2022-04-05 | 四川九洲线缆有限责任公司 | Special cable for connection between high-voltage equipment |
-
2012
- 2012-05-19 CN CN 201220228192 patent/CN202694965U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114283974A (en) * | 2021-12-20 | 2022-04-05 | 四川九洲线缆有限责任公司 | Special cable for connection between high-voltage equipment |
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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 |
Granted publication date: 20130123 Termination date: 20150519 |
|
| EXPY | Termination of patent right or utility model |