CN202473390U - Medium-voltage power cable - Google Patents
Medium-voltage power cable Download PDFInfo
- Publication number
- CN202473390U CN202473390U CN 201220075463 CN201220075463U CN202473390U CN 202473390 U CN202473390 U CN 202473390U CN 201220075463 CN201220075463 CN 201220075463 CN 201220075463 U CN201220075463 U CN 201220075463U CN 202473390 U CN202473390 U CN 202473390U
- Authority
- CN
- China
- Prior art keywords
- layer
- medium
- power cable
- cable
- cable core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Insulated Conductors (AREA)
Abstract
The utility model discloses a medium-voltage power cable. The medium-voltage power cable comprises a cable core, an inner semi-conductive shielding layer, a crosslinked polyethylene insulating layer, an outer semi-conductive shielding layer, a metal shielding layer and an outer sheath layer which are sequentially arranged from inside to outside, wherein the cable core comprises an aluminium alloy conductor. According to the utility model, the conductor is the aluminium alloy conductor with the tensile strength larger than or equal to 100 Mpa and the elongation at break larger than or equal to 12 percent, the aluminium alloy material has the electrical conductivity larger than or equal to 61 percent of the IACS (International Annealed Copper Standard), and all the properties of the aluminium alloy conductor are remarkably superior to those of a traditional aluminium conductor cable for electrical purposes. The medium-voltage power cable has outstanding bending property, mechanical property, safety performance, anticorrosion performance and connection performance, as well as greatly prolonged service life.
Description
Technical field
The utility model relates to a kind of power cable, has the medium-pressure power cable that relates to a kind of rated voltage 6～35kV.
Background technology
In the power cable, copper has accounted for the overwhelming majority with its excellent electric property, mechanical performance and stability in power cable conductor; But copper is a kind of scarce resource; Storage capacity is limited, and especially less at the storage of Chinese copper, a large amount of copper need import; This has just expedited the emergence of rising violently fast of copper material price, and then when the river rises the boat goes up to make the price of power cable.Under the surging overall background of this copper valency, people begin to seek the substitute of copper, and the substitution material that at first gets into people's sight line is an aluminium; Because the storage of aluminium is abundant, and price is comparatively cheap with respect to copper, but in the process of using the aluminium conductor power cable, find; Though the electric property of aluminium conductor is not poor; But because the aluminium quality is softer, fracture easily in process of production, the gap appears in cable joint easily in the process of cold cycling; Cause contact resistance to become big, potential safety hazard seriously appears in heating easily.Aluminium alloy conductor has added iron, copper, magnesium, silicon, zinc etc. and other rare earth elements on the basis of aluminium conductor; Make aluminium alloy conductor that the conductivity of electrician's aluminium not only arranged; And good creep resistance is arranged, and tensile strength, Corrosion Protection and bending property are under the identical ampacity; Aluminium alloy only need increase the cross section just can reach electric property and the stability the same with copper conductor, but bending property is than excellent many of copper conductor.
The utility model content
The purpose of the utility model provides all medium-pressure power cables of good rated voltage 6～35kV of a kind of electric property, mechanical property and economy.
The technical scheme that realizes the utility model purpose is a kind of medium-pressure power cable, comprises the cable core external sheath layer outer with being coated on cable core that is positioned at the center; Said cable core comprises aluminium alloy conductor, inner semiconductor layer, crosslinked polyetylene insulated layer, out semiconductor layer and the metal screen layer that sets gradually from the inside to the outside.
The aluminium alloy conductor of said formation cable core is that many single line concentric strandings form, and every single line is molded lines.
Said cable core is one.In this kind structure, can also comprise the waterstop that is arranged between metal screen layer and the external sheath layer.
Said cable core bag is three; The tangent in twos setting of said three cable cores; Three tangent in twos settings of cable core.In this kind structure, also comprise coating successively being arranged at twining package tape, inner covering, the metal armouring layer between cable core and the external sheath layer; Between cable core and twining package tape, filling is set.
Adopted technique scheme; The utlity model has following beneficial effect: the conductor of (1) the utility model adopts aluminium alloy conductor, the tensile strength >=100Mpa of aluminium alloy conductor, elongation at break >=12%; Aluminum alloy materials conductance >=61%IACS; Each item performance of aluminium alloy conductor all significantly is superior to traditional electrician's aluminium conductor cable, and its bending property, mechanical performance, security performance, antiseptic property, switching performance are particularly outstanding, can increase substantially the useful life of cable.
(2) aluminium alloy conductor of the utility model adopts the structure of many molded lines concentric strandings, and molded lines concentric stranding aluminium alloy conductor has good creep resistance and bending property, and the bending radius minimum is 7 times of external diameters; Adopt the molded lines concentric stranding when stranded, the mutual embedding of each single line joins, and forms stable, firm stranded conductor; Its activity coefficient nearly reaches 0.97, and under same cross-sectional, conductor diameter dwindles 8～15% than conventional circular non-compact conductor; Dwindle 3～6.5% than the conductor diameter of pressing, significantly reduced the consumption of materials such as insulating barrier and restrictive coating, reach the purpose of practicing thrift cost; And the burr on the similar compact conductor can not appear in cable surface; Cable the electric field concentration phenomenon can not occur, and the cable joint of having eliminated electrician's aluminium cable the gap occurs easily and causes contact resistance to become big in the process of cold cycling, and potential safety hazard seriously appears in heating easily; Solved the problem of joint copper-aluminium transition, the useful life of having improved cable.Reduced simultaneously and pressed operation; Reduce cost; Eliminated metal work hardening phenomenon, the conductivity of single line and mechanical performance are constant basically, and electric conductivity is superior to compact conductor under the same cross-sectional; This molded lines concentric stranding aluminium alloy cable each item combination property significantly is superior to electrician's aluminium conductor cable, alternative copper conductor cable after the enlarged cross section.
(3) cable core of the utility model can be selected single core or three cores as required, and compact conformation is convenient to produce.
(4) the utility model can increase waterstop and blocks water; Go for very moist environment; Can also carry out steel band, chain aluminum alloy strip armouring and wire armoring again in the cable outside simultaneously and come cable is carried out mechanical protection, improve cable the adverse circumstances resistance.
Description of drawings
For the content that makes the utility model is expressly understood more easily,, the utility model is done further detailed explanation, wherein below according to specific embodiment and combine accompanying drawing
Fig. 1 is a kind of structural representation of the utility model, and cable conductor is single cored structure among the figure.
Fig. 2 is the another kind of structural representation of the utility model, and cable conductor is a three-core structure among the figure.
Fig. 3 is the another kind of structural representation of the utility model, and cable conductor is a three-core structure among the figure.
Label is in the accompanying drawing:
Embodiment
(embodiment 1)
See Fig. 1, a kind of medium-pressure power cable of present embodiment comprises cable core 1 that is positioned at the center and the external sheath layer 2 that is coated on outside the cable core 1; Cable core 1 comprises aluminium alloy conductor 101, inner semiconductor layer 102, crosslinked polyetylene insulated layer 103, out semiconductor layer 104 and the metal screen layer 105 that sets gradually from the inside to the outside.Cable core 1 is one, and aluminium alloy conductor 101 forms for many single line concentric strandings, and every single line is molded lines.External sheath layer 2 adopts polythene material.Because conductor 101 adopted special material and structure, skin carries out water-proofing treatment again, thus the power cable of present embodiment can be used in bending radius less, in the moist environment.
(embodiment 2)
See Fig. 2, the medium-pressure power cable of present embodiment comprises the cable core 1 that is positioned at the center and the twining package tape 4, inner covering 5, metal armouring layer 6 and the external sheath layer 2 that are coated on outside the cable core 1; Cable core 1 comprises aluminium alloy conductor 101, inner semiconductor layer 102, crosslinked polyetylene insulated layer 103, out semiconductor layer 104 and the metal screen layer 105 that sets gradually from the inside to the outside.Cable core 1 is three; Three tangent in twos settings of cable core 1 are provided with between cable core 1 and twining package tape 4 and fill 7.Metal armouring layer 6 is the steel-tape armouring layer.Because conductor 101 adopted special material and structure, carried out steel-tape armouring again, so the power cable of present embodiment can be used in bending radius less, need bear in the environment of mechanical external pressure.
(embodiment 3)
See Fig. 3, the medium-pressure power cable of present embodiment and embodiment 2 are basic identical, and difference is that metal armouring layer 6 is the wire armoring layer.Certainly metal armouring layer 10 can also be chain aluminum alloy strip armouring.Because conductor 101 adopted special material and structure, the cable deadweight is reduced, anti-crooking ability strengthens, and has carried out wire armoring again, thus the power cable of present embodiment can be used in bending radius less, need bear in the environment of mechanical external broach.
Above-described specific embodiment; Purpose, technical scheme and beneficial effect to the utility model have carried out further explain, it should be understood that the above is merely the specific embodiment of the utility model; Be not limited to the utility model; All within the spirit and principle of the utility model, any modification of being made, be equal to replacement, improvement etc., all should be included within the protection range of the utility model.
Claims (7)
1. a medium-pressure power cable is characterized in that: comprise the cable core (1) that is positioned at the center and be coated on the outer external sheath layer (2) of cable core (1); Said cable core (1) comprises aluminium alloy conductor (101), inner semiconductor layer (102), crosslinked polyetylene insulated layer (103), out semiconductor layer (104) and the metal screen layer (105) that sets gradually from the inside to the outside.
2. a kind of medium-pressure power cable according to claim 1 is characterized in that: the aluminium alloy conductor (101) of said formation cable core (1) forms for many single line concentric strandings, and every single line is molded lines.
3. a kind of medium-pressure power cable according to claim 1 and 2 is characterized in that: said cable core (1) is one.
4. a kind of medium-pressure power cable according to claim 3 is characterized in that: also comprise the waterstop (3) that is arranged between metal screen layer (105) and the external sheath layer (2).
5. a kind of medium-pressure power cable according to claim 1 and 2 is characterized in that: said cable core (1) bag is three; The tangent in twos setting of said three cable cores (1).
6. a kind of medium-pressure power cable according to claim 5 is characterized in that: also comprise coating successively being arranged at twining package tape (4), inner covering (5), the metal armouring layer (6) between cable core (1) and the external sheath layer (2); Between cable core (1) and twining package tape (4), filling (7) is set.
7. a kind of medium-pressure power cable according to claim 6 is characterized in that: said metal armouring layer (6) is steel-tape armouring layer or wire armoring layer or chain aluminum alloy strip armouring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220075463 CN202473390U (en) | 2012-03-02 | 2012-03-02 | Medium-voltage power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220075463 CN202473390U (en) | 2012-03-02 | 2012-03-02 | Medium-voltage power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202473390U true CN202473390U (en) | 2012-10-03 |
Family
ID=46921534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220075463 Expired - Fee Related CN202473390U (en) | 2012-03-02 | 2012-03-02 | Medium-voltage power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202473390U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103325473A (en) * | 2013-05-31 | 2013-09-25 | 远东电缆有限公司 | Fire-proof low smoke zero halogen medium-pressure hoisting cable for high-rise building and production process thereof |
| CN103928112A (en) * | 2013-09-17 | 2014-07-16 | 安徽华天电缆有限公司 | Low-smoke zero-halogen polyolefin sheath cable |
-
2012
- 2012-03-02 CN CN 201220075463 patent/CN202473390U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103325473A (en) * | 2013-05-31 | 2013-09-25 | 远东电缆有限公司 | Fire-proof low smoke zero halogen medium-pressure hoisting cable for high-rise building and production process thereof |
| CN103325473B (en) * | 2013-05-31 | 2017-09-26 | 远东电缆有限公司 | Skyscraper fire resisting low-smoke halogen-free medium voltage crane cable and its production technology |
| CN103928112A (en) * | 2013-09-17 | 2014-07-16 | 安徽华天电缆有限公司 | Low-smoke zero-halogen polyolefin sheath cable |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202018850U (en) | Extruded-insulation aluminum alloy power cable with rated voltage from 6kV to 35kV | |
| CN202473390U (en) | Medium-voltage power cable | |
| CN201897997U (en) | 110kV cross-linked polyethylene insulated power cable | |
| CN203192526U (en) | Specially-shaped aerial conductor | |
| CN202563954U (en) | Optical fiber composite aluminum alloy conductor metal sheath flame-retarding water-blocking environment-friendly type constructional intelligent cable | |
| CN202018848U (en) | Low-voltage aluminum alloy power cable | |
| CN203026205U (en) | Special high-voltage motor lead wire | |
| CN203433881U (en) | Scandium-contained aluminium alloy conductor-based low-voltage power cable | |
| CN203242381U (en) | Aluminum alloy interlocking armored waterproof cable | |
| CN202749110U (en) | Constant resistance steel-clad copper cable | |
| CN202549473U (en) | Butyronitrile electric flexible cable | |
| CN202584888U (en) | Power cable with large-section sector-shaped conductor | |
| CN204558081U (en) | The anti-oxidant copper stranded conductor of a kind of anti-die mould | |
| CN205303033U (en) | Island is with anticorrosive dampproofing low pressure power cable | |
| CN204480782U (en) | A kind of colliery armouring insulated power cable | |
| CN203573723U (en) | Aluminum alloy cable | |
| CN210805312U (en) | Corrosion-resistant aluminum-coated steel-cored aluminum stranded wire | |
| CN204558146U (en) | A kind of terminal direct current high voltage cable | |
| CN204166974U (en) | Energy-conserving and environment-protective complex function type cable | |
| CN202103875U (en) | Double-conductor heating cable | |
| CN202650634U (en) | Aluminum alloy cable | |
| CN204480788U (en) | A kind of space flight armoured power cable | |
| CN202563966U (en) | Low voltage cable special for frequency converter | |
| CN202103876U (en) | Modified structure of single conductor heating cable | |
| CN203165552U (en) | High-strength power cable |
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: 20121003 Termination date: 20210302 |