CN203103006U - Halogen-free low-smoke flame-retardant power cable with high-conductivity aluminum alloy core - Google Patents
Halogen-free low-smoke flame-retardant power cable with high-conductivity aluminum alloy core Download PDFInfo
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- CN203103006U CN203103006U CN 201320079719 CN201320079719U CN203103006U CN 203103006 U CN203103006 U CN 203103006U CN 201320079719 CN201320079719 CN 201320079719 CN 201320079719 U CN201320079719 U CN 201320079719U CN 203103006 U CN203103006 U CN 203103006U
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Abstract
The utility model belongs to the technical field of cable manufacturing and discloses a halogen-free low-smoke flame-retardant power cable with a high-conductivity aluminum alloy core. The power cable comprises a plurality of cable cores, wherein the cable core is sequentially provided with a conductor, a conductor shielding layer, an insulating layer, an insulated shielding layer and a metal shielding layer from inside to outside, and the conductor is twisted by a plurality of high-conductivity aluminum alloy wires; and an oxygen separation layer and an armor layer are sequentially arranged at the outside of the cable core outwards. According to the utility model, the high-conductivity aluminum alloy wires are used as the conductor of the cable to solve the defects of large creep, high expansion coefficient and bad continuous stability of a pure aluminum conductor under heating and pressure conditions; and meanwhile, the aluminum alloy cable is applied in medium and low-voltage distribution systems to replace copper cables, thereby reducing the cable investment, lowering the transport and installation costs, and having promotional value, market prospect and good economic benefit and social benefit.
Description
Technical field
The utility model belongs to the cables manufacturing technical field, is specifically related to a kind of high cond aluminium core zero-halogen low-smoke flame-retardant electrical cable.
Background technology
Our copper resource is poor relatively, and bauxite resource is rich relatively, in the power cable manufacturing technology, is a long-term strategic task with aluminium for copper.
By current metal trade market cathode copper price is 5.62 ten thousand yuan/ton; The electrolytic aluminium price is 1.51 ten thousand yuan/ton, and the copper price is 3.72 times of the aluminium price, conductor as cable, what examine is conductance, the conductance of aluminium alloy conductor is the 61%IACS(International Annealed Copper Standard, IEC60028), under same volume, the actual weight of aluminium alloy approximately is 1/3rd of a copper, calculate by this, under the condition that satisfies the identical conduction performance, the length of the aluminium alloy cable of identical weight is two times of copper cable, press ampacity and calculate, the weight of aluminium alloy cable is half of same ampacity copper cable.
Based on this, and, be necessary to research and develop a kind of novel aluminium alloy cable and substitute existing copper conductor cable in conjunction with our actual mineral resources.
Summary of the invention
At above-mentioned weak point of the prior art, the utility model aims to provide a kind of high cond aluminium core zero-halogen low-smoke flame-retardant electrical cable, reduces cable weight, has reduced installation cost, reduce the wearing and tearing of equipment and cable itself simultaneously, have the value and the prospect of popularization.
To achieve these goals, the technical solution of the utility model: a kind of high cond aluminium core zero-halogen low-smoke flame-retardant electrical cable, comprise several cable cores, it is characterized in that: described cable core has conductor, conductor shield, insulating barrier, insulation screen, metal screen layer from inside to outside successively, wherein, described conductor is by stranded the forming of some high cond aluminium lines; And described cable core outside is successively to being outside equipped with oxygen barrier layer, armour.
Further, described oxygen barrier layer comprises the high flame retardant band that sets gradually from inside to outside, extrudes the oxygen barrier cover.
Be filled with fire-retardant packed layer between described high flame retardant band and the cable core.
Described armour comprises the metal armouring layer that sets gradually from inside to outside, fire-retardant oversheath; Again or described armour comprises aluminum alloy strip lock armo layer.
The lay ratio of the aluminium alloy wire that described conductor is stranded is 28～30.
Described insulating barrier is the crosslinked polyethylene layer.
The beneficial effects of the utility model: with the aluminium alloy wire of high conductivity conductor as cable, reduced the fine aluminium conductor be heated and pressure under creep big, the coefficient of expansion is high, the imperfect shortcoming of continous-stable; While in the mesolow distribution system, can reduce the cable investment with aluminium alloy cable Alloy instead of Copper cable application, reduces transportation and installation cost expense, has promotional value and market prospects, has good economic benefit and social benefit.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the sectional view of the utility model cable;
Fig. 2 is the sectional view of the another kind of structure of the utility model.
Embodiment
Further describe the utility model below in conjunction with specific embodiment and accompanying drawing.
A kind of high cond aluminium core zero-halogen low-smoke flame-retardant electrical cable as depicted in figs. 1 and 2 comprises several cable cores, described cable core has conductor 1, conductor shield 2, insulating barrier 3, insulation screen 4, metal screen layer 5 from inside to outside successively, wherein, described conductor 1 is by stranded the forming of some high cond aluminium lines; And described cable core outside is successively to being outside equipped with oxygen barrier layer, armour.
High cond aluminium line in the utility model adopts the aluminium alloy of high conductivity to make, (the Ω/km) meet GB/T3956-2008 table 2 to stipulate of maximum resistance in the time of its 20 ℃, cable with same size is made comparisons, the conductivity of this aluminium alloy conductor is 61% of the most frequently used reference material copper IACS, but under same volume, the actual weight of aluminium approximately is 1/3rd of a copper, by this calculating, under the condition that satisfies the identical conduction performance, the length of the aluminium alloy cable of identical weight is two times of copper cable, press ampacity and calculate, the weight of aluminium alloy cable is half of same ampacity copper cable.Substitute copper cable by this alloy wire, can reduce the weight of cable, correspondingly reduce installation cost simultaneously, the wearing and tearing of minimizing equipment and cable make the installation frock more light.In addition, this aluminium alloy formula and Technology for Heating Processing have significantly reduced metal to be inclined in " creep " of being heated with pressure, has guaranteed the service quality of cable.And adopt the stranded stranding of multicore, and lay ratio is 28～30, and described lay ratio promptly is the pitch of the stranded cable that forms and the ratio of cable size, and the structure of this aluminium alloy wire meets the requirement of GB/T3956-2008 regulation.
Described oxygen barrier layer adopts the high flame retardant band 7 that sets gradually from inside to outside, extrudes oxygen barrier cover 8; Being filled with fire-retardant packed layer 6 between described high flame retardant band 7 and the cable core carries out fire-retardant; Described insulating barrier 3 is the crosslinked polyethylene layer.
Described armour comprises metal armouring layer 9, the fire-retardant oversheath 10 that sets gradually from inside to outside, perhaps adopts aluminum alloy strip lock armo 11.
This power cable aluminium alloy cable Alloy instead of Copper cable application can reduce the cable investment in the mesolow distribution system, reduces transportation and installation cost expense, has promotional value and market prospects, has good economic benefit and social benefit.
More than technical scheme that the utility model embodiment is provided be described in detail, used specific case herein principle and the execution mode of the utility model embodiment are set forth, the explanation of above embodiment only is applicable to the principle that helps to understand the utility model embodiment; Simultaneously, for one of ordinary skill in the art, according to the utility model embodiment, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as restriction of the present utility model.
Claims (7)
1. one kind high cond aluminium core zero-halogen low-smoke flame-retardant electrical cable, comprise several cable cores, it is characterized in that: described cable core has conductor (1), conductor shield (2), insulating barrier (3), insulation screen (4), metal screen layer (5) from inside to outside successively, wherein, described conductor (1) is by stranded the forming of some high cond aluminium lines; And described cable core outside is successively to being outside equipped with oxygen barrier layer, armour.
2. high cond aluminium core zero-halogen low-smoke flame-retardant electrical cable according to claim 1 is characterized in that: described oxygen barrier layer comprises the high flame retardant band (7) that sets gradually from inside to outside, extrudes oxygen barrier cover (8).
3. high cond aluminium core zero-halogen low-smoke flame-retardant electrical cable according to claim 2 is characterized in that: be filled with fire-retardant packed layer (6) between described high flame retardant band (7) and the cable core.
4. high cond aluminium core zero-halogen low-smoke flame-retardant electrical cable according to claim 1 is characterized in that: described armour comprises the metal armouring layer (9) that sets gradually from inside to outside, fire-retardant oversheath (10).
5. high cond aluminium core zero-halogen low-smoke flame-retardant electrical cable according to claim 1, it is characterized in that: described armour comprises aluminum alloy strip lock armo layer (11).
6. high cond aluminium core zero-halogen low-smoke flame-retardant electrical cable according to claim 1, it is characterized in that: the lay ratio of the aluminium alloy wire that described conductor (1) is stranded is 28～30.
7. high cond aluminium core zero-halogen low-smoke flame-retardant electrical cable according to claim 1 is characterized in that: described insulating barrier (3) is the crosslinked polyethylene layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320079719 CN203103006U (en) | 2013-02-21 | 2013-02-21 | Halogen-free low-smoke flame-retardant power cable with high-conductivity aluminum alloy core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320079719 CN203103006U (en) | 2013-02-21 | 2013-02-21 | Halogen-free low-smoke flame-retardant power cable with high-conductivity aluminum alloy core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203103006U true CN203103006U (en) | 2013-07-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320079719 Expired - Fee Related CN203103006U (en) | 2013-02-21 | 2013-02-21 | Halogen-free low-smoke flame-retardant power cable with high-conductivity aluminum alloy core |
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| Country | Link |
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| CN (1) | CN203103006U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103871574A (en) * | 2014-03-07 | 2014-06-18 | 安徽新华电缆(集团)有限公司 | Flexible electric wire with multiple protecting sheaths for metallurgical power generation |
-
2013
- 2013-02-21 CN CN 201320079719 patent/CN203103006U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103871574A (en) * | 2014-03-07 | 2014-06-18 | 安徽新华电缆(集团)有限公司 | Flexible electric wire with multiple protecting sheaths for metallurgical power generation |
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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: 20130731 Termination date: 20190221 |