CN201616292U - Double-sheath high-voltage and extra-high-voltage cable - Google Patents
Double-sheath high-voltage and extra-high-voltage cable Download PDFInfo
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- CN201616292U CN201616292U CN2010203025671U CN201020302567U CN201616292U CN 201616292 U CN201616292 U CN 201616292U CN 2010203025671 U CN2010203025671 U CN 2010203025671U CN 201020302567 U CN201020302567 U CN 201020302567U CN 201616292 U CN201616292 U CN 201616292U
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Abstract
The utility model relates to a double-sheath high-voltage and extra-high-voltage cable which is characterized in that the cross section of the cable sequentially comprises a conductor, a conductor shielding layer, an insulating layer, an insulation shielding layer, a waterproof buffer layer, a metal sheath, a sheath layer and a conductive layer from inside to outside, wherein the sheath layer is combined and extruded by polyethylene plastic and polyvinyl chloride plastic; and the conductive layer is extruded by polyvinyl chloride plastic with conductivity. The utility model has the advantages that the sheath layer is combined and extruded by linear low-density polyethylene plastic and semi-rigid polyvinyl chloride flame retardant plastic, therefore, the waterproofness of the cable is improved, and the mechanical properties such as wear resistance, tensile resistance and impact resistance are ensured; the conductive layer is extruded by ultra semiconductive lead free environment-friendly polyvinyl chloride plastic, therefore the firmness of the conductive layer of the cable can be effectively improved, the service life is prolonged, the conductive continuity is ensured, and the environmental pollution caused by a graphite coating can be avoided. The cable is particularly applicable to high-voltage or extra-high-voltage power transmission lines under all circumstances.
Description
Technical field
The utility model belongs to the cables manufacturing technical field, particularly relates to a kind of pair of sheath high pressure and extra-high-tension cable.
Background technology
Along with national economy grows continuously and fast and the improving constantly of people's living standard, increasing to the demand of electric power.Electric power energy under-supply become that the restriction Chinese national economy continues, one of the key factor of high speed development.Therefore develop high voltage power transmission, the electric pressure that improves transmission line is an imperative thing.High voltage power transmission and transforming field twisted polyethylene cable with its conductor working temperature height, excellent electrical properties, transmission capacity is big, simple in structure, the manufacturing cycle is short, easy to use, install and to lay and to keep in repair easy and extensively be subjected to the user and welcome.In the cross-linked polyethylene insulated cable structure of high pressure and superhigh pressure; the outer jacket of cable has also been born the function of a part of insulation when playing certain protection cable inner structure part; the traditional high pressure and the jacket structure of extra-high-tension cable are generally igelite and the vinyon individual layer is extruded structure, applies one deck graphite powder again as conductive layer in its outside then.Because igelite is on molecular structure, its water resistance is relatively poor; The environment for use of this outer cable is abominable, its in the installation and operation process, the effect of various mechanical external forces such as being dragged, draw, grind, bend, pounding or squeezing, so the performance of vinyon is difficult to satisfy above-mentioned requirements through regular meeting.Use graphite powder as conductive layer simultaneously, it also pollutes easily to environment, is easy to again come off, so be difficult to guarantee the continuity of its conduction.
Summary of the invention
The utility model provides a kind of its oversheath to have good wear-resisting effect for solving the technical problem that exists in the known technology, improves the cable waterproof performance, and can avoid the two sheath high pressure and the extra-high-tension cable of environmental pollution.
The technical scheme that the utility model is taked for the technical problem that exists in the solution known technology is: two sheath high pressure and extra-high-tension cable, it is characterized in that: the cross section structure of this cable is for comprising successively from inside to outside: conductor, conductor screen, insulation, insulation shielding, water-blocking buffer layer, metallic sheath, restrictive coating and conductive layer, described restrictive coating is to extrude the restrictive coating of making by vinyon and igelite combination, and described conductive layer is to extrude the conductive layer of making by the igelite with conductive characteristic.
The utility model can also adopt following technical scheme:
Described restrictive coating is the restrictive coating that linear low density polyethylene (LLDPE) plastics and semi-rigid polyvinyl chloride flame retardant plastics are made.
The conductive layer that described conductive layer is made for super semiconductive leadless environment-friendly type igelite.
Advantage and the good effect that the utlity model has are: because the utility model adopts technique scheme, be that the restrictive coating of this cable adopts linear low density polyethylene (LLDPE) plastics and the combination of semi-rigid polyvinyl chloride flame retardant plastics to extrude to form, improved the water resistance of cable, guaranteed that it is wear-resisting, mechanical performance such as tension and shock resistance; Conductive layer adopts super semiconductive leadless environment-friendly type igelite to extrude and forms, and not only can effectively improve the robustness of cable conduction layer, prolongs its useful life, guarantees conduction continuity, the environmental pollution that also can avoid equadag coating to cause simultaneously.The utility model especially is suitable for all-environment high pressure or extra high voltage network.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Among the figure: 1, conductor; 2, conductor screen; 3, insulating barrier; 4, insulation shielding; 5, water-blocking buffer layer; 6, metallic sheath; 7, sheath; 8, conductive layer.
Embodiment
For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
See also Fig. 1, two sheath high pressure and extra-high-tension cable, the cross section structure of described cable is for comprising successively from inside to outside: conductor 1, conductor screen 2, insulating barrier 3, insulation shielding 4, water-blocking buffer layer 5, metallic sheath 6, restrictive coating 7 and conductive layer 8.Wherein conductor screen 2 is semiconductive plastics, conductor screen 2 is coated on the outside of conductor 1 by the mode of extruding, be coated with the insulating barrier 3 of crosslinked polyethylene plastic by the mode of extruding in the outside of conductor screen 2, outside at insulating barrier 3 is coated with the insulation shielding 4 that semiconductive plastics are made by the mode of extruding, insulation shielding 4 outsides are surrounded with water-blocking buffer layer 5, described water-blocking buffer layer 5 is waterstop and buffering waterstop, and described metallic sheath 6 is that aluminium bar is through extruding the aluminium matter sheath that forms continuously.Described restrictive coating 7 is to extrude the restrictive coating of making by vinyon and igelite combination, and this restrictive coating is the restrictive coating that linear low density polyethylene (LLDPE) plastics and semi-rigid polyvinyl chloride flame retardant plastics are made.Described conductive layer 8 is to extrude the conductive layer of making, the conductive layer that this conductive layer is made for super semiconductive leadless environment-friendly type igelite by the igelite with conductive characteristic.
Claims (3)
1. two sheath high pressure and extra-high-tension cable, it is characterized in that: the cross section structure of this cable is for comprising successively from inside to outside: conductor (1), conductor screen (2), insulation (3), insulation shielding (4), water-blocking buffer layer (5), metallic sheath (6), restrictive coating (7) and conductive layer (8), described restrictive coating is to extrude the restrictive coating of making by vinyon and igelite combination, and described conductive layer (8) is to extrude the conductive layer of making by the igelite with conductive characteristic.
2. according to claim 1 pair of sheath high pressure and extra-high-tension cable is characterized in that: described restrictive coating (7) is the restrictive coating that linear low density polyethylene (LLDPE) plastics and semi-rigid polyvinyl chloride flame retardant plastics are made.
3. according to claim 1 pair of sheath high pressure and extra-high-tension cable is characterized in that: the conductive layer that described conductive layer (8) is made for super semiconductive leadless environment-friendly type igelite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010203025671U CN201616292U (en) | 2010-02-08 | 2010-02-08 | Double-sheath high-voltage and extra-high-voltage cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010203025671U CN201616292U (en) | 2010-02-08 | 2010-02-08 | Double-sheath high-voltage and extra-high-voltage cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201616292U true CN201616292U (en) | 2010-10-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010203025671U Expired - Fee Related CN201616292U (en) | 2010-02-08 | 2010-02-08 | Double-sheath high-voltage and extra-high-voltage cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201616292U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102496410A (en) * | 2011-12-16 | 2012-06-13 | 苏州市东沪电缆有限公司 | Flat cable with composite special-function core resistant to cold, abrasion and bending |
-
2010
- 2010-02-08 CN CN2010203025671U patent/CN201616292U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102496410A (en) * | 2011-12-16 | 2012-06-13 | 苏州市东沪电缆有限公司 | Flat cable with composite special-function core resistant to cold, abrasion and bending |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101027 Termination date: 20130208 |