CN202758660U - Aluminum-plastic composite belt shielding water-resistant power cable - Google Patents
Aluminum-plastic composite belt shielding water-resistant power cable Download PDFInfo
- Publication number
- CN202758660U CN202758660U CN 201220406826 CN201220406826U CN202758660U CN 202758660 U CN202758660 U CN 202758660U CN 201220406826 CN201220406826 CN 201220406826 CN 201220406826 U CN201220406826 U CN 201220406826U CN 202758660 U CN202758660 U CN 202758660U
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- aluminium
- power cable
- tape
- resistant power
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Abstract
The utility model provides an aluminum-plastic composite belt shielding water-resistant power cable, which sequentially comprises a conductor, a conductor shielding layer, an insulating layer and an insulation shielding layer from the interior to the exterior, and is characterized in that the outer side of the insulation shielding layer is sequentially provided with a semi-conductive belt wrapped outside, an aluminum-plastic composite belt wrapped outside in longitudinal direction, and a polyethylene sheath. Compared with the prior art, the aluminum-plastic composite belt wrapped in the longitudinal direction is adopted as a shielding structure, thus the same effect as the traditional copper-belt shielding structure can be achieved, and the aluminum-plastic composite belt shielding water-resistant power cable has good radial water resistant effect, reduces the excessive waste of non-ferrous metals, and has low production cost.
Description
Technical field
The utility model relates to the single-core power cables that a kind of rated voltage is 6 ~ 35kV, particularly relates to a kind of the shielding with vertical alclad plastic composite strip and makes cable have the single-core power cables of good radial water-resisting function.
Background technology
(the metallic shield structure of rated voltage 6 ~ 35kV) can form for the combining structure of one or more metal tape, concentric layer metal knitted, wiry or wire and metal tape medium-pressure power cable.The metallic shield structure has two Main Functions, and the one, what produce when cable is switched on is electromagnetic-field-shielded in insulated wire cores, produces to external world electromagnetic interference to reduce; The 2nd, the fault current in the scope of design of system's generation is introduced safely grounding system, with the protection system safe operation.
The shielding construction of present domestic medium-pressure power cable adopts the copper strip shielding structure usually.When rated voltage is that 35kV and conductor nominal area of section are more than or equal to 500mm
2The time, the metal screen layer of power cable should adopt the brass wire shielding structure.
Copper is one of human discovery metal the earliest, also is one of best simple metal, and its quality is slightly hard, has extremely tough and tensile and anti abrasive characteristics, also has good ductility.Heat conduction and the electric conductivity of copper are better, so electric wire adopts copper strips as the metallic shield structure usually.But the content of copper in the earth's crust only is about 0.01%.Along with the fast development of China's industry, increasing to the demand of copper, and the price of copper is relatively high, has increased the production cost of electric wire.
The power cable layer environment mostly is crane span structure, direct-burried, cable trough etc., and cable may be long-term local or be submerged, and the radial water-resisting effect of common medium-pressure power cable is bad, and cable is immersed in the water for a long time, and moisture easily passes plastic sheath and enters cable inside.
Summary of the invention
The utility model purpose provides the single-core power cables that a kind of rated voltage is 6 ~ 35kV, its have preferably the radial water-resisting effect and production cost lower.
For achieving the above object, the utility model by the following technical solutions:
A kind of aluminium-plastic tape shielding water-resistant power cable, it is comprised of conductor, conductor shield, insulating barrier and insulation screen from the inside to the outside successively, it is characterized in that: aluminium-plastic tape and polyethylene sheath that described insulation screen also has successively wrapped semi-conductive tape outward, vertically coats.
Preferably, described aluminium-plastic tape is polyethylene single face aluminium-plastic tape.More preferably, the aluminium lamination of described aluminium-plastic tape inwardly is coated on the surface of described semi-conductive tape, and its plastic layer and described polyethylene sheath are combined closely.
Preferably, described polyethylene sheath also has metal tape armour layer and oversheath outward successively.More preferably, described metal tape armour layer is nonmagnetic metal band armour.
Preferably, described polyethylene sheath also has wire armour, twining package tape and oversheath outward successively.More preferably, described wire armour is nonmagnetic metal silk armour.More preferably, described twining package tape is the non-hygroscopic band.The effect of described twining package tape is the loose phenomenon of wire that causes for self rotation or the other reasons that prevents in the wire armouring operation because of cable.
In the technique scheme, described semi-conductive tape is that the insulation screen to cable causes mechanical damage when reducing vertical alclad plastic composite strip.
Adopt the shielding construction of vertical alclad plastic composite strip, compare with plastics, the internal crystal framework of metal is very fine and close, and good water resistance is arranged.Water penetration such as metallic aluminium, lead is almost nil.The vertical relatively low polyethylene sheath of alclad plastic composite strip water penetration outer field with it is united and has been consisted of a kind of fabulous waterproof, barrier material, so has good radial water-resisting effect.
The utility model is used for the single-core power cables of rated voltage 6 ~ 35kV, compared with prior art, the aluminium-plastic tape shielding water-resistant power cable that the utility model provides adopts the shielding construction of vertical alclad plastic composite strip, can reach the effect identical with the metallic shield structure, that is: one is produce when cable is switched on electromagnetic-field-shielded in insulated wire cores, produces to external world electromagnetic interference to reduce; The 2nd, the fault current in the scope of design of system's generation is introduced safely grounding system, with the protection system safe operation.Simultaneously, because vertical alclad plastic composite strip vinyon layer outer field with it combined closely, make cable have again good radial water-resisting function.On the other hand, aluminium element content in the earth's crust is considerably beyond the content of copper, and the density of aluminium only is 30% of copper density, and the cost ratio copper of aluminium is much lower, adopts vertical alclad plastic composite strip shielding construction more can reduce the excess waste of non-ferrous metal, reduce production costs.
Description of drawings
Accompanying drawing 1 is the structural representation of the utility model aluminium-plastic tape shielding water-resistant power cable the first embodiment.
Accompanying drawing 2 is the structural representation of the utility model aluminium-plastic tape shielding water-resistant power cable the second embodiment.
Accompanying drawing 3 is the structural representation of the utility model aluminium-plastic tape shielding water-resistant power cable the 3rd embodiment.
Embodiment
Below in conjunction with accompanying drawing the utility model preferred embodiment is elaborated.
Embodiment 1
See also Fig. 1, a kind of aluminium-plastic tape shielding water-resistant power cable, it is comprised of conductor 11, conductor shield 12, insulating barrier 13 and insulation screen 14 from the inside to the outside successively, described insulation screen 14 outer aluminium-plastic tape 16 and the polyethylene sheath 17 that also have successively wrapped semi-conductive tape 15, vertically coat.Wherein, described conductor 11 adopts and meets the stranded round conductor that presses of stipulating among the State Standard of the People's Republic of China GB/T 3956-2008 " conductor of cable ", described insulating barrier 13 is crosslinked polyethylene (XLPE) insulating barrier, described aluminium-plastic tape 16 is polyethylene single face aluminium-plastic tape, vertical Bao Shiqi aluminium lamination inwardly is coated on described semi-conductive tape 15 surfaces, and its vinyon layer is outwards combined closely with described polyethylene sheath 17.
Embodiment 2
See also Fig. 2, a kind of aluminium-plastic tape shielding water-resistant power cable, it is comprised of conductor 21, conductor shield 22, insulating barrier 23 and insulation screen 24 from the inside to the outside successively, described insulation screen 24 outer aluminium-plastic tape 26 and the polyethylene sheath 27 that also have successively wrapped semi-conductive tape 25, vertically coat also have nonmagnetic metal band armour 28 and oversheath 210 outside the described polyethylene sheath 27 successively.Wherein, described conductor 21 adopts and meets the stranded round conductor that presses of stipulating among the State Standard of the People's Republic of China GB/T 3956-2008 " conductor of cable ", described insulating barrier 23 is crosslinked polyethylene (XLPE) insulating barrier, described aluminium-plastic tape 26 is polyethylene single face aluminium-plastic tape, vertical Bao Shiqi aluminium lamination inwardly is coated on described semi-conductive tape 25 surfaces, and its vinyon layer is outwards combined closely with described polyethylene sheath 27.
Embodiment 3
See also Fig. 3, a kind of aluminium-plastic tape shielding water-resistant power cable, it is comprised of conductor 31, conductor shield 32, insulating barrier 33 and insulation screen 34 from the inside to the outside successively, described insulation screen 34 outer aluminium-plastic tape 36 and the polyethylene sheath 37 that also have successively wrapped semiconductive belt 35, vertically coat also have nonmagnetic metal silk armour 38, twining package tape 39 and oversheath 310 outside the described polyethylene sheath 37 successively.Wherein, described conductor 31 adopts and meets the stranded round conductor that presses of stipulating among the State Standard of the People's Republic of China GB/T 3956-2008 " conductor of cable ", described insulating barrier 33 is crosslinked polyethylene (XLPE) insulating barrier, described aluminium-plastic tape 36 is polyethylene single face aluminium-plastic tape, vertical Bao Shiqi aluminium lamination inwardly is coated on described semi-conductive tape 35 surfaces, and its vinyon layer is outwards combined closely with described polyethylene sheath 37.Described twining package tape 39 is reverse wrapped non-hygroscopic band, and its effect is the loose phenomenon of wire that causes for self rotation or the other reasons that prevents in the wire armouring operation because of cable.
Above-described embodiment only is explanation technical conceive of the present utility model and characteristics; its purpose is to allow the personage who is familiar with technique can understand content of the present utility model and according to this enforcement; can not limit protection range of the present utility model with this; all equivalences of doing according to the utility model Spirit Essence change or modify, and all should be encompassed within the protection range of the present utility model.
Claims (8)
1. an aluminium-plastic tape shields water-resistant power cable, it is comprised of conductor, conductor shield, insulating barrier and insulation screen from the inside to the outside successively, it is characterized in that: aluminium-plastic tape and polyethylene sheath that described insulation screen also has successively wrapped semi-conductive tape outward, vertically coats.
2. aluminium-plastic tape according to claim 1 shields water-resistant power cable, and it is characterized in that: described aluminium-plastic tape is polyethylene single face aluminium-plastic tape.
3. aluminium-plastic tape according to claim 2 shields water-resistant power cable, and it is characterized in that: the aluminium lamination of described aluminium-plastic tape inwardly is coated on the surface of described semi-conductive tape, and its plastic layer and described polyethylene sheath are combined closely.
4. aluminium-plastic tape according to claim 1 shields water-resistant power cable, and it is characterized in that: described polyethylene sheath also has metal tape armour layer and oversheath outward successively.
5. aluminium-plastic tape according to claim 4 shields water-resistant power cable, and it is characterized in that: described metal tape armour layer is nonmagnetic metal band armour.
6. aluminium-plastic tape according to claim 1 shields water-resistant power cable, and it is characterized in that: described polyethylene sheath also has wire armour, twining package tape and oversheath outward successively.
7. aluminium-plastic tape according to claim 6 shields water-resistant power cable, and it is characterized in that: described wire armour is nonmagnetic metal silk armour.
8. according to claim 6 or 7 described aluminium-plastic tapes shielding water-resistant power cables, it is characterized in that: described twining package tape is the non-hygroscopic band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220406826 CN202758660U (en) | 2012-08-16 | 2012-08-16 | Aluminum-plastic composite belt shielding water-resistant power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220406826 CN202758660U (en) | 2012-08-16 | 2012-08-16 | Aluminum-plastic composite belt shielding water-resistant power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202758660U true CN202758660U (en) | 2013-02-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220406826 Expired - Fee Related CN202758660U (en) | 2012-08-16 | 2012-08-16 | Aluminum-plastic composite belt shielding water-resistant power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202758660U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103137264A (en) * | 2013-03-26 | 2013-06-05 | 金杯电工衡阳电缆有限公司 | Environment-friendly medium voltage power supply cable for rail transit |
-
2012
- 2012-08-16 CN CN 201220406826 patent/CN202758660U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103137264A (en) * | 2013-03-26 | 2013-06-05 | 金杯电工衡阳电缆有限公司 | Environment-friendly medium voltage power supply cable for rail transit |
| CN103137264B (en) * | 2013-03-26 | 2016-02-17 | 金杯电工衡阳电缆有限公司 | A kind of track traffic environment-friendly type medium-pressure electricity supply cable |
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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: 20130227 Termination date: 20150816 |
|
| EXPY | Termination of patent right or utility model |