CN205789235U - A kind of land direct current cables - Google Patents
A kind of land direct current cables Download PDFInfo
- Publication number
- CN205789235U CN205789235U CN201620523232.XU CN201620523232U CN205789235U CN 205789235 U CN205789235 U CN 205789235U CN 201620523232 U CN201620523232 U CN 201620523232U CN 205789235 U CN205789235 U CN 205789235U
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- Prior art keywords
- outside
- layer
- sets
- insulating barrier
- semi
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- 239000004020 conductor Substances 0.000 claims abstract description 31
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 24
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 24
- 239000003063 flame retardant Substances 0.000 claims abstract description 23
- 230000004888 barrier function Effects 0.000 claims abstract description 20
- 229910052751 metal Inorganic materials 0.000 claims abstract description 19
- 239000002184 metal Substances 0.000 claims abstract description 19
- 230000001681 protective effect Effects 0.000 claims abstract description 19
- 239000004677 Nylon Substances 0.000 claims abstract description 12
- 229920001778 nylon Polymers 0.000 claims abstract description 12
- 239000004698 Polyethylene Substances 0.000 claims abstract description 8
- -1 polyethylene Polymers 0.000 claims abstract description 8
- 229920000573 polyethylene Polymers 0.000 claims abstract description 8
- 230000000694 effects Effects 0.000 claims abstract description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052802 copper Inorganic materials 0.000 claims abstract description 4
- 239000010949 copper Substances 0.000 claims abstract description 4
- 239000004703 cross-linked polyethylene Substances 0.000 claims abstract description 4
- 229920003020 cross-linked polyethylene Polymers 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 5
- 229920001169 thermoplastic Polymers 0.000 claims description 5
- 239000004416 thermosoftening plastic Substances 0.000 claims description 5
- 239000004411 aluminium Substances 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 229910052736 halogen Inorganic materials 0.000 claims description 3
- 150000002367 halogens Chemical class 0.000 claims description 3
- 229920000098 polyolefin Polymers 0.000 claims description 3
- 239000000779 smoke Substances 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 235000007926 Craterellus fallax Nutrition 0.000 description 1
- 240000007175 Datura inoxia Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009422 external insulation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
Landscapes
- Insulated Conductors (AREA)
Abstract
A kind of land direct current cables belongs to electrical equipment technical field.Its structural feature is: center conductor, for pressing circular stranded annealed copper twisted wire, sets conductor shield outside center conductor, sets semiconductive nylon tape outside conductor shield, set insulating barrier outside semiconductive nylon tape, and described insulating barrier is XLPE insulating barrier；Outside insulating barrier, it is provided with the Semi-conductive buffer band for playing cushioning effect, outside Semi-conductive buffer band, sets protective metal shell；Setting inner cushion layer outside protective metal shell, described inner cushion layer is polyethylene inner cushion layer, sets water-blocking buffer layer outside inner cushion layer, sets fire retardant jacket outside water-blocking buffer layer, sets high density polyethylene (HDPE) anti-ant layer outside fire retardant jacket, and high density polyethylene (HDPE) anti-ant layer is outside is semi-conductive layer.This utility model mechanical strength is high and fire-retardant, good water-proof effect.
Description
Technical field
This utility model belongs to electrical equipment technical field, especially relates to the improvement of a kind of land direct current cables structure.
Background technology
Cable is made up of conductor and the outsourcing insulating protective layer of one or more mutually insulated, and electric power or information are transferred at one the wire at another.Being typically by the cable of the similar rope of several or several groups wire strandings, often mutually insulated between group wire, and be often twisted into round a center, whole outside is surrounded by the cover layer of high-insulation.Cable has interior energising, the feature of external insulation.
High tension cable is often laid in seabed tunnel or subsoil water compared with in the tunnel of horn of plenty, due to more serious, the moisture of seeping water in tunnel the biggest the fact, and need in view of cable running there will be the situation that local segment will may be intake in a large number under some extreme situation, therefore cable typically requires when oversheath type selecting and is considered as block-water performance and preferably insulate outer jacket.Meanwhile, based on fireproof requirement in tunnel, cable jacket is needed again to have excellent fire resistance.Existing cable oversheath after adding fire retardant easily ftractures, and water resistance declines, and bad mechanical strength, reduces service life.
Summary of the invention
This utility model is aiming at the problems referred to above, it is provided that a kind of mechanical strength is high and fire-retardant, a kind of land direct current cables of good water-proof effect.
For realizing above-mentioned purpose of the present utility model, this utility model adopts the following technical scheme that, a kind of land direct current cables, including center conductor, conductor shield, semiconductive nylon tape, insulating barrier, semi-conductive buffer layer, protective metal shell, polyethylene inner cushion layer, water-blocking buffer layer, fire retardant jacket, high density polyethylene (HDPE) anti-ant layer and semi-conductive layer, its structural feature is: center conductor is for pressing circular stranded annealed copper twisted wire, conductor shield is set outside center conductor, semiconductive nylon tape is set outside conductor shield, insulating barrier is set outside semiconductive nylon tape, described insulating barrier is XLPE insulating barrier；Outside insulating barrier, it is provided with the Semi-conductive buffer band for playing cushioning effect, outside Semi-conductive buffer band, sets protective metal shell；Setting inner cushion layer outside protective metal shell, described inner cushion layer is polyethylene inner cushion layer, sets water-blocking buffer layer outside inner cushion layer, sets fire retardant jacket outside water-blocking buffer layer, sets high density polyethylene (HDPE) anti-ant layer outside fire retardant jacket, and high density polyethylene (HDPE) anti-ant layer is outside is semi-conductive layer.
As a kind of preferred version, described fire retardant jacket uses high-fire-resistance thermoplastic cable's material to make, such as flame-proof PVC, the combustion of fire-retardant poly-second or low smoke, zero halogen polyolefin etc..
As another kind of preferred version, described conductor shield is semiconductive conductor shield.
As another preferred version, described protective metal shell is corrugated aluminium sheath.
The beneficial effects of the utility model.
This utility model fire retardant jacket uses high-fire-resistance thermoplastic cable's material to make, and fire resistance is good and toughness strong, is hardly damaged.Between water-blocking buffer layer and protective metal shell, add inner cushion layer, it is to avoid water-blocking buffer layer directly contacts with protective metal shell, increase water-blocking buffer layer service life, strengthen block-water performance.
Accompanying drawing explanation
Accompanying drawing is used for providing being further appreciated by of the present utility model, and constitutes a part for description, is used for explaining this utility model, is not intended that restriction of the present utility model together with embodiment of the present utility model.
Fig. 1 is this utility model structural representation.
In figure, conductor centered by 1,2 be conductor shield, 3 be semiconductive nylon tape, 4 be insulating barrier, 5 be semi-conductive buffer layer, 6 be protective metal shell, 7 be polyethylene inner cushion layer, 8 be water-blocking buffer layer, 9 be fire retardant jacket, 10 be high density polyethylene (HDPE) anti-ant layer, 11 be semi-conductive layer.
Detailed description of the invention
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is illustrated, it will be appreciated that preferred embodiment described herein is merely to illustrate and explains this utility model, be not used to limit this utility model.
As shown in Figure 1, a kind of land direct current cables, including center conductor 1, conductor shield 2, semiconductive nylon tape 3, insulating barrier 4, semi-conductive buffer layer 5, protective metal shell 6, polyethylene inner cushion layer 7, water-blocking buffer layer 8, fire retardant jacket 9, high density polyethylene (HDPE) anti-ant layer 10 and semi-conductive layer 11, its structural feature is: center conductor 1 is for pressing circular stranded annealed copper twisted wire, setting conductor shield 2 outside center conductor 1, described conductor shield 2 is semiconductive conductor shield；Conductor shield 2 is outside sets semiconductive nylon tape 3, and semiconductive nylon tape 3 is outside sets insulating barrier 4, and described insulating barrier 4 is XLPE insulating barrier；Being provided with the Semi-conductive buffer band 5 for playing cushioning effect outside insulating barrier 4, Semi-conductive buffer band 5 is outside sets protective metal shell 6, and described protective metal shell 6 is corrugated aluminium sheath；Protective metal shell 6 is outside sets inner cushion layer 7, described inner cushion layer 7 is polyethylene inner cushion layer, inner cushion layer 7 is outside sets water-blocking buffer layer 8, water-blocking buffer layer 8 is outside sets fire retardant jacket 9, described fire retardant jacket uses high-fire-resistance thermoplastic cable's material to make, such as flame-proof PVC, the combustion of fire-retardant poly-second or low smoke, zero halogen polyolefin etc.；Setting high density polyethylene (HDPE) anti-ant layer 10 outside fire retardant jacket, high density polyethylene (HDPE) anti-ant layer outside 10 is semi-conductive layer 11.
This utility model fire retardant jacket uses high-fire-resistance thermoplastic cable's material to make, and fire resistance is good and toughness strong, is hardly damaged.Between water-blocking buffer layer and protective metal shell, add inner cushion layer, it is to avoid water-blocking buffer layer directly contacts with protective metal shell, increase water-blocking buffer layer service life, strengthen block-water performance.
Preferred embodiment of the present utility model described in detail above.Should be appreciated that those of ordinary skill in the art just can make many modifications and variations according to design of the present utility model without creative work.Therefore, all technical staff in the art pass through the available technical scheme of logical analysis, reasoning, or a limited experiment on the basis of existing technology according to design of the present utility model, all should be in the protection domain being defined in the patent claims.
Claims (4)
1. a land direct current cables, including center conductor, conductor shield, semiconductive nylon tape, insulating barrier, semi-conductive buffer layer, protective metal shell, polyethylene inner cushion layer, water-blocking buffer layer, fire retardant jacket, high density polyethylene (HDPE) anti-ant layer and semi-conductive layer, it is characterized in that: center conductor is for pressing circular stranded annealed copper twisted wire, conductor shield is set outside center conductor, semiconductive nylon tape is set outside conductor shield, setting insulating barrier outside semiconductive nylon tape, described insulating barrier is XLPE insulating barrier；Outside insulating barrier, it is provided with the Semi-conductive buffer band for playing cushioning effect, outside Semi-conductive buffer band, sets protective metal shell；Setting inner cushion layer outside protective metal shell, described inner cushion layer is polyethylene inner cushion layer, sets water-blocking buffer layer outside inner cushion layer, sets fire retardant jacket outside water-blocking buffer layer, sets high density polyethylene (HDPE) anti-ant layer outside fire retardant jacket, and high density polyethylene (HDPE) anti-ant layer is outside is semi-conductive layer.
A kind of land the most according to claim 1 direct current cables, it is characterised in that: described fire retardant jacket uses high-fire-resistance thermoplastic cable's material to make, such as flame-proof PVC, the combustion of fire-retardant poly-second or low smoke, zero halogen polyolefin etc..
A kind of land the most according to claim 1 direct current cables, it is characterised in that: described conductor shield is semiconductive conductor shield.
A kind of land the most according to claim 1 direct current cables, it is characterised in that: described protective metal shell is corrugated aluminium sheath.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620523232.XU CN205789235U (en) | 2016-06-02 | 2016-06-02 | A kind of land direct current cables |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620523232.XU CN205789235U (en) | 2016-06-02 | 2016-06-02 | A kind of land direct current cables |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205789235U true CN205789235U (en) | 2016-12-07 |
Family
ID=58137340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620523232.XU Expired - Fee Related CN205789235U (en) | 2016-06-02 | 2016-06-02 | A kind of land direct current cables |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205789235U (en) |
-
2016
- 2016-06-02 CN CN201620523232.XU patent/CN205789235U/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 |
Granted publication date: 20161207 Termination date: 20170602 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |