CN205428520U - High transport capacity power cable - Google Patents
High transport capacity power cable Download PDFInfo
- Publication number
- CN205428520U CN205428520U CN201620207289.9U CN201620207289U CN205428520U CN 205428520 U CN205428520 U CN 205428520U CN 201620207289 U CN201620207289 U CN 201620207289U CN 205428520 U CN205428520 U CN 205428520U
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- power cable
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- transmission capacity
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Abstract
The utility model discloses a high transport capacity power cable, including the conductor, the cladding has interior semiconductive shielding layer, the inner insulating layer, well insulating layer, external insulation layer, outer semiconductive shielding layer, the buffer layer that blocks water, aluminium sheath layer, termite resistance to gnaw to sting layer, non metallic sheath and high fire -retardant isolation layer in proper order outside the conductor, the utility model discloses novel structure, function practicality utilize the crowded ultrapurification crosslinked polyethylene insulating layer that wraps of three -layer, ensure good insulating properties, and then improve power cable's transport capacity, all there is the super smooth semiconductor electric shield layer of one deck inside and outside the insulation, makes field distribution even, simultaneously, crowd package one deck semiconductive shielding layer outside the conductor, increased the radius of conductor, eliminated the produced pointed end of stranded conductor transposition, reduced the high field on conductor surface.
Description
Technical field
This utility model belongs to power cable field, is specifically related to a kind of high transmission capacity power cable.
Background technology
The power transmission sequence used at present has two kinds, one is modal overhead transmission line, it generally uses uninsulated bare conductor, by standing on the shaft tower on ground as holder, wire insulator is suspended on shaft tower, the transmission capacity of this power transmission sequence is high, and (including European and American developed countries) commonly used overhead transmission line is as the main mode of conveying electric energy the most both at home and abroad.
Another kind is power cable line, and it uses the cable of special processing and manufacturing, is embedded in underground or is laid in cable tunnel；Power cable is typically made up of wire, insulating barrier and protective layer, has single, twin-core and three-core cable；Underground cable line mainly considers from urban look and line security angle, is also used for overhead transmission line and sets up the area of difficulty, such as city or the transmission of electricity in special leap location.
Transmission line of electricity is maximum delivery power determined by after considering technology, the every factor of economic dispatch, is referred to as the transmission capacity of this circuit.Transmission capacity substantially to square being directly proportional of transmission voltage.Therefore, improving transmission voltage is the technical way realizing Large Copacity or long distance power transmission, is also the outstanding feature of technology of transmission of electricity level of development.
Utility model content
The purpose of this utility model is to provide the high transmission capacity power cable of novel structure, practical function.
Technical scheme provided by the utility model is: a kind of high transmission capacity power cable, including conductor, outside conductor, it is coated with inner semiconductor layer, inner insulating layer, middle insulating barrier, external insulation layer, out semiconductor layer, water-blocking buffer layer, aluminium sheath layer, the termite-proof layer that bites, non metallic sheath and high fire-retardance sealing coat successively.
As a kind of improvement of the present utility model, the outer surface at described aluminium sheath layer has anticorrosion bitumen layer.
As a kind of improvement of the present utility model, described inner semiconductor layer and out semiconductor layer are ultra-smooth semiconductive polyolefin screen layer.
As a kind of improvement of the present utility model, described inner insulating layer, middle insulating barrier and external insulation layer are the ultrapurification cross-linking polyethylene materials layers extruded in the way of three-layer co-extruded, dry cross-linking, continuous vulcanization.
As a kind of improvement of the present utility model, described high fire-retardance sealing coat uses Ceramic silicon rubber material flame-retardant layer.
As a kind of improvement of the present utility model, described conductor is the conductor that cross section is circle being twisted system by aluminum or copper conductor.
As a kind of improvement of the present utility model, the described termite-proof layer that bites uses polyolefin layers.
As a kind of improvement of the present utility model, it is additionally provided with tear line between layer at described aluminium sheath layer and described termite-proof biting.
Beneficial effect:
This utility model novel structure, practical function, utilize three layers of crosslinked polyetylene insulated layer of the ultrapurification extruded, it is ensured that excellent insulating properties, and then improves the transmission capacity of power cable；Inside and outside insulation, all there is the semi-conductor electricity screen layer that one layer of ultra-smooth is smooth, make Electric Field Distribution uniform；Meanwhile, outside conductor, extrude one layer of semiconductive shielding layer, increase the radius of conductor, eliminate stranded conductor stranded produced most advanced and sophisticated, reduce the high field of conductive surface.
The termite-proof layer that bites is set, can effectively prevent biting of insects particularly Coptotermes formosanus Shtrari., improve the service life of electric power cable.
Outside aluminium sheath layer, coat anticorrosion bitumen layer, the anti-corrosion capability of electric power cable can be improved further.
Outside aluminium sheath layer, tear line is set, so that strip off cable more easily when of installing, safeguard.
By arranging high fire-retardance sealing coat, the flame-retardant ability of power cable can be improved further, improve the safety and reliability of product.
Accompanying drawing explanation
Fig. 1 is a kind of high transmission capacity power cable structure schematic diagram of this utility model.
In figure, 1 is conductor, and 2 is inner semiconductor layer, and 3 is inner insulating layer, 4 is middle insulating barrier, 5 is external insulation layer, and 6 is out semiconductor layer, and 7 is water-blocking buffer layer, 8 is aluminium sheath layer, 9 is anticorrosion bitumen layer, and 10 is the termite-proof layer that bites, and 11 is nonmetal oversheath, 12 is high fire-retardance sealing coat, and 13 is tear line.
Detailed description of the invention
Further illustrate embodiment of the present utility model below in conjunction with the accompanying drawings.
As shown in Figure 1, high transmission capacity power cable in the present embodiment, including conductor 1, being coated with inner semiconductor layer 2, inner insulating layer 3, middle insulating barrier 4, external insulation layer 5, out semiconductor layer 6, water-blocking buffer layer 7, aluminium sheath layer 8, the termite-proof layer 10 that bites, non metallic sheath 11 and high fire-retardance sealing coat 12 outside conductor successively, the outer surface at described aluminium sheath layer 8 has anticorrosion bitumen layer 9.
Described inner semiconductor layer 2 and out semiconductor layer 6 are ultra-smooth semiconductive polyolefin screen layer；Described inner insulating layer 3, middle insulating barrier 4 and external insulation layer 5 are the ultrapurification cross-linking polyethylene materials layers extruded in the way of three-layer co-extruded, dry cross-linking, continuous vulcanization；Described high fire-retardance sealing coat 12 uses Ceramic silicon rubber material flame-retardant layer.
Described conductor 1 is the conductor that cross section is circle being twisted system by aluminum or copper conductor；
The described termite-proof layer 10 that bites uses polyolefin layers, utilizes its hardness and smooth surface, plays the effect that insects such as stopping Coptotermes formosanus Shtrari. bite.
It is additionally provided with tear line 13 between layer at described aluminium sheath layer and described termite-proof biting, facilitates wire stripping.
This utility model is not limited to above-mentioned detailed description of the invention, and those skilled in the art also can make multiple change accordingly, but any all should contain in the range of this utility model claim with this utility model equivalent or similar change.
Claims (8)
1. one kind high transmission capacity power cable, including conductor, it is characterized in that, outside conductor, be coated with inner semiconductor layer, inner insulating layer, middle insulating barrier, external insulation layer, out semiconductor layer, water-blocking buffer layer, aluminium sheath layer, the termite-proof layer that bites, non metallic sheath and high fire-retardance sealing coat successively.
A kind of high transmission capacity power cable the most as claimed in claim 1, it is characterised in that the outer surface at described aluminium sheath layer has anticorrosion bitumen layer.
A kind of high transmission capacity power cable the most as claimed in claim 1 or 2, it is characterised in that described inner semiconductor layer and out semiconductor layer are ultra-smooth semiconductive polyolefin screen layer.
A kind of high transmission capacity power cable the most as claimed in claim 3, it is characterised in that described inner insulating layer, middle insulating barrier and external insulation layer are the ultrapurification cross-linking polyethylene materials layers extruded in the way of three-layer co-extruded, dry cross-linking, continuous vulcanization.
A kind of high transmission capacity power cable the most as claimed in claim 4, it is characterised in that described high fire-retardance sealing coat uses Ceramic silicon rubber material flame-retardant layer.
A kind of high transmission capacity power cable the most as claimed in claim 5, it is characterised in that described conductor is the conductor that cross section is circle being twisted system by aluminum or copper conductor.
A kind of high transmission capacity power cable the most as claimed in claim 1, it is characterised in that the described termite-proof layer that bites uses polyolefin layers.
A kind of high transmission capacity power cable the most as claimed in claim 1, it is characterised in that be additionally provided with tear line between layer at described aluminium sheath layer and described termite-proof biting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620207289.9U CN205428520U (en) | 2016-03-17 | 2016-03-17 | High transport capacity power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620207289.9U CN205428520U (en) | 2016-03-17 | 2016-03-17 | High transport capacity power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205428520U true CN205428520U (en) | 2016-08-03 |
Family
ID=56519995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620207289.9U Expired - Fee Related CN205428520U (en) | 2016-03-17 | 2016-03-17 | High transport capacity power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205428520U (en) |
-
2016
- 2016-03-17 CN CN201620207289.9U patent/CN205428520U/en not_active Expired - Fee Related
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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: 20160803 |