CN104575731A - Three-core inflaming retarding aluminum alloy soft cable for communication power source - Google Patents
Three-core inflaming retarding aluminum alloy soft cable for communication power source Download PDFInfo
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- CN104575731A CN104575731A CN201510023458.3A CN201510023458A CN104575731A CN 104575731 A CN104575731 A CN 104575731A CN 201510023458 A CN201510023458 A CN 201510023458A CN 104575731 A CN104575731 A CN 104575731A
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Abstract
The invention belongs to the technical field of wires and cables, and relates to a three-core inflaming retarding aluminum alloy soft cable for a communication power source. The three-core inflaming retarding aluminum alloy soft cable comprises a non-armoring type cable body or an armoring type cable body. The non-armoring type cable body comprises three electric lead cores, a belting layer, a filling layer and a jacket layer. The armoring type cable body comprises three electric lead cores, a belting layer, a filling layer, a lining layer, an armoring layer and a jacket layer. The three-core inflaming retarding aluminum alloy soft cable is characterized in that the three electric lead cores are five-class naked aluminum alloy wire stranded conductors with the cross section area of 1.5-300 mm<2>, the five-class naked aluminum alloy wire stranded conductors are formed by stranding annealed five-class naked aluminum alloy wires with the diameter of 0.2-1.15 mm, an insulating layer and the jacket layer are made of polyvinyl chloride, the minimum bending radius of the non-armoring type cable body is larger than the outer diameter of the non-armoring type cable body by four times, and the minimum bending radius of the armoring type cable body is larger than the outer diameter of the armoring type cable body by 12 times. The softness is improved, the weight is low, the transporting and operating cost is reduced, and the operating intensity is relieved; connection is convenient, the using safety is guaranteed, and the service life of the conductors is prolonged.
Description
Technical field
The invention belongs to technical field of electric wires and cables, be specifically related to a kind of communication power supply three-core flame-retardant aluminium alloy flexible cable.
Background technology
Communication power supply flexible cable is a kind of confession electric connection line of communications facility, widely uses in the distribution system at telecommunication bureau station, distribution box cabinet and so on.Communication power supply flexible cable not only requires to have good flexibility, conveniently to lay in narrow space or when similar, and requires to have desirable anti-flammability, to adapt to the instructions for use under the harsh occasion of fire-protection rating.
Technical information about communication power supply flexible cable can be seen in disclosed Chinese patent literature, such as CN201247632Y recommends have that " communication power supply is with fire-retardant, fire-resistant, shielding anti-interference flexible cable ", CN201302849Y provides " a kind of communication power supply flame-retardant refractory flexible electric cable ", CN202230791Y discloses to be had " the flame-retardant crosslinking polyethylene insulated flexible cable of a kind of communication power supply ", CN202720953U introduces to be had " watt form drag combustion shielded flexible cable for communication power supply ", CN202855416U discloses " communication power supply fire-resistant shield flexible cable " and CN202601277U disclosed " a kind of communication power supply flame-retardant flexible electric cable ", etc..
Although the communication power supply flexible cable being not limited to exemplify above respectively has corresponding technique effect, but there is following common shortcoming: one, due to all using stranded thin copper wire as conductor, and this conductor is called five class copper conductors by industry, and thus softness can not meet the desired requirement.And due to pliability difference, bending radius is restricted, thus narrow space, to hinder by immovable object so the occasion at the place of talking in a roundabout way and so on is laid time, very easily affect speed of application; Its two, due to generally select under technology prejudice with copper as the conductor of flexible cable, thus not only there is the blindness of reasonable employment raw material aspect, and cause the manufacturing cost of flexible cable large; Its three, due to heavy weight, the cost thus not only in logistics transportation, storage link is high, and workmen's labour intensity is large in laid processes, to consume cost of labor high.
Substantially identical with the elongation at break of copper conductor based on aluminium alloy conductor, both allowable stress most diverse are little at normal temperatures, yield strength is roughly the same, thus mean that the croop property of aluminium alloy conductor and copper conductor is basically identical, corrosion resistance is better than copper greatly, so relative to copper wire twisting conductor, naked aluminum-alloy wire stranded conductor has higher cost performance, though the density of naked aluminum-alloy wire stranded conductor is about 1/3rd of copper wire stranded conductor, weight is far below copper conductor, but in the current-carrying situation of ad eundem, cross section and the cross section of aluminium conductor are larger than copper conductor.Naked aluminum-alloy wire stranded conductor is adopted to cause the concern of industry as communication power supply flame retardant cable in view of this, but select which kind of type or claim the aluminium conductor of which kind of specification need through screening repeatedly and test, otherwise have blindness, technical scheme described below produces under this background.
Summary of the invention
Task of the present invention be to provide a kind of contribute to significantly promoting flexibility and use embodiment conveniently lay and promote adaptability when small space is laid, be conducive to embodying excellent creep-resistant property and use and avoid causing lax because of cold flow or creep, be of value to remarkable weight reduction and use and save such as logistics, storage, cable laying operation expense and alleviate the labour intensity of workmen, have and be convenient to adapt with the expansion of cable connector and constriction coefficient and use to facilitate wiring and have and be good at embodying excellent fire resistance and use the communication power supply three-core flame-retardant aluminium alloy flexible cable ensureing use safety.
Task of the present invention has been come like this, a kind of communication power supply three-core flame-retardant aluminium alloy flexible cable, comprise non-armored type cable body or armored type cable body, described non-armored type cable body comprise three be coated with separately the conductor wire core of insulating barrier, the belting layer be wrapped in outside three conductor wire cores, be filled between insulating barrier and belting layer spatial domain in packed layer and the restrictive coating that is positioned at outside belting layer; Described armored type cable body comprise three be coated with separately the conductor wire core of insulating barrier, the belting layer be wrapped in outside three conductor wire cores, be filled between insulating barrier and belting layer spatial domain in packed layer and the inner covering, armour and the restrictive coating that are positioned at successively outside belting layer, feature is: three described conductor wire cores by the diameter through annealing in process be the stranded formation of the naked aluminum-alloy wire of five classes of 0.2-1.15 ㎜ and sectional area is 1.5-300mm
2the naked aluminum-alloy wire stranded conductor of five classes, described insulating barrier and restrictive coating are flame-proof polyvinyl chloride, the minimum bending radius of described non-armored type cable body is 4 times of the external diameter being greater than non-armored type cable body, and the minimum bending radius of described armored type cable body is 12 times of the external diameter being greater than armored type cable body.
The outermost layer of five class of the present invention naked aluminum-alloy wire stranded conductor is that left-hand is stranded, and direction of lay is between layers contrary.
The twisting pitch of five class of the present invention naked aluminum-alloy wire stranded conductor is 10 ~ 25 times of described five class naked aluminium wire stranded conductor diameter.
Belting layer of the present invention is fire-retardant twining package tape.
Fire-retardant twining package tape of the present invention is the fire-retardant Halogen band of fire-retardant glass fiber belt.
Packed layer of the present invention is flame resistant filler layer.
Flame resistant filler layer of the present invention is fire-retardant PP gasket for packing or flame-proof PVC packing.
Inner covering of the present invention is fire-retardant inner covering.
Fire-retardant inner covering of the present invention is flame-proof PVC band or extrudes flame-proof PVC.
Armour of the present invention is steel band.
One of technique effect of technical scheme provided by the invention, due to have employed by diameter be the naked aluminum-alloy wire of five classes of 0.2-1.15mm stranded form and sectional area is 1.5-300mm
2the naked aluminum-alloy wire stranded conductor of five classes as conductor wire core, thus flexibility is significantly improved, the minimum bending radius of non-armored type cable body is greater than 4 times of the external diameter of non-armored type cable body, the minimum bending radius of armored type cable body is 12 times of the external diameter being greater than armored type cable body, has such as small space, the good adaptability in place of to talk in a roundabout way and so on when cable laying operation; Two, because overall weight is significantly alleviated for copper conductor, be thus conducive to reducing transport and storage and construction operation cost, and the operation intensity of workmen can be alleviated; Three, the Swelling and contraction coefficient being tending towards same cable connector due to Swelling and contraction coefficient matches, and thus can conveniently connect; Four, because insulating barrier and restrictive coating are flame-proof polyvinyl chloride, thus can ensure use safety; Five, the corrosion resistance of aluminium alloy conductor is better than copper greatly, increases conductor useful life.
Accompanying drawing explanation
Fig. 1 is the cross sectional representation of the first embodiment of the present invention.
Fig. 2 is the cross sectional representation of the second embodiment of the present invention.
Embodiment
Embodiment 1:
Refer to Fig. 1, give non-armored type cable body in FIG, this non-armored type cable body comprise three be coated with separately the conductor wire core 1 of insulating barrier 11, the belting layer 2 be wrapped in outside three conductor wire cores 1, be filled between insulating barrier 11 and belting layer 2 spatial domain in packed layer 3 and the restrictive coating 4 that is positioned at outside belting layer 2.
Technical essential as technical scheme provided by the invention: conductor wire core 1 be by the diameter through annealing in process be the naked aluminum-alloy wire of five classes of 0.2-1.15mm stranded form and sectional area is 1.5-300mm
2the naked aluminum-alloy wire stranded conductor of five classes, and insulating barrier 11 and restrictive coating 4 are flame-proof polyvinyl chloride.
The direction of lay between layers of the naked aluminum-alloy wire stranded conductor of above mentioned five class is: it is stranded that outermost layer should be left-hand, and the direction of lay between each layer keeps contrary, be 10 ~ 25 times of five classes naked aluminum-alloy wire stranded conductor diameter by twisting pitch control in stranding process, be 15 ~ 25 times preferably, be 15 ~ 20 times better, be preferably 18 times, the present embodiment selects 18 times.Aforesaid belting layer 2 is fire-retardant twining package tape, and fire-retardant twining package tape is fire-retardant glass fiber belt; Aforesaid packed layer 3 is fire-retardant PP gasket for packing.
The communication power supply obtained by the present embodiment is 450 ~ 750V and 600 ~ 1000V with the rated operational voltage of the fire-retardant aluminium alloy flexible cable of two cores; Long-term work adaptive temperature is :-20 DEG C ~ 70 DEG C; Minimum bending radius is 4 times of the external diameter being greater than non-armored type cable body.
A known class in the conductor wire core 1 (i.e. five classes naked aluminum-alloy wire stranded conductor) that the present invention recommends and wires and cables industry and two class aluminium conductors have substantial and are difficult to the difference come to realize by those of skill in the art, because a known class and two class aluminium conductors are commonly a class duralumin conductor and two class duralumin conductors in wires and cables industry.But, the naked aluminium alloy single skein silk that the present invention adopts 5 classes (five classes) ultra-fine closes and forms, namely aforesaid diameter is adopted to be the naked aluminum-alloy wire stranded conductor of five classes of 0.2-1.15 ㎜, the conductor wire core 1 of this structure is in space state up to now in China's wires and cables industry, and there is no national standard and/or industry standard can be followed, the applicant is applied to the cable of communication power supply, has the positive effect being confirmed the technique effect referred in superincumbent technique effect hurdle.
Embodiment 2:
Refer to Fig. 2, give armored type cable body in fig. 2, this armored type cable body comprise three be coated with separately the conductor wire core 1 of insulating barrier 11, the belting layer 2 be wrapped in outside pair of conductive core 1, be filled between insulating barrier 11 and belting layer 2 spatial domain in packed layer 3 and the inner covering 5, armour 6 and the restrictive coating 4 that are positioned at successively outside belting layer 2.In the present embodiment, belting layer 2 adopts fire-retardant Halogen band; Packed layer 3 adopts PVC packing; Inner covering 5 adopts flame-proof PVC band, is wrapped in by flame-proof PVC band outside belting layer 2; Armour 6 is adopted steel band.If adopt the mode extruded to extrude flame-proof PVC outside belting layer 2, replace flame-proof PVC band using this PVC extruded and as inner covering 5, so should be considered as equivalence and substitute and still belong to technology contents category disclosed by the invention.The minimum bending radius of the armored type cable body that the present embodiment obtains is 12 times of the external diameter being greater than armored type cable body.All the other are all with the description to embodiment 1.
The relation preferably but between the radical of the sectional area of be not limited to 16 kinds of specifications, naked aluminum-alloy wire and the diameter of naked aluminum-alloy wire monofilament of the conductor wire core 1 in above-described embodiment 1 and 2 is by shown in following table:
Claims (10)
1.
a kind of communication power supply three-core flame-retardant aluminium alloy flexible cable, packed layer (3) in the spatial domain comprise non-armored type cable body or armored type cable body, described non-armored type cable body comprises three conductor wire cores (1) being coated with insulating barrier (11) separately, be wrapped in three conductor wire cores (1) belting layer outward (2), being filled between insulating barrier (11) and belting layer (2) and be positioned at belting layer (2) restrictive coating outward (4), described armored type cable body comprises the conductor wire core (1) that three are coated with insulating barrier (11) separately, be wrapped in three conductor wire cores (1) belting layer outward (2), be filled in the packed layer (3) in the spatial domain between insulating barrier (11) and belting layer (2) and be positioned at belting layer (2) inner covering outward (5) successively, armour (6) and restrictive coating (4), it is characterized in that: three described conductor wire cores (1) by the diameter through annealing in process be the stranded formation of the naked aluminum-alloy wire of five classes of 0.2-1.15 ㎜ and sectional area is 1.5-300mm 2 the naked aluminum-alloy wire stranded conductor of five classes, described insulating barrier (11) and restrictive coating (4) are flame-proof polyvinyl chloride, the minimum bending radius of described non-armored type cable body is 4 times of the external diameter being greater than non-armored type cable body, and the minimum bending radius of described armored type cable body is 12 times of the external diameter being greater than armored type cable body.
2.
communication power supply three-core flame-retardant aluminium alloy flexible cable according to claim 1, is characterized in that the outermost layer of described five classes naked aluminum-alloy wire stranded conductor is that left-hand is stranded, and direction of lay is between layers contrary.
3.
communication power supply three-core flame-retardant aluminium alloy flexible cable according to claim 1 and 2, is characterized in that the twisting pitch of described five classes naked aluminum-alloy wire stranded conductor is 10 ~ 25 times of described five class naked aluminium wire stranded conductor diameter.
4.
communication power supply three-core flame-retardant aluminium alloy flexible cable according to claim 1, is characterized in that described belting layer (2) is fire-retardant twining package tape.
5.
communication power supply three-core flame-retardant aluminium alloy flexible cable according to claim 4, is characterized in that described fire-retardant twining package tape is the fire-retardant Halogen band of fire-retardant glass fiber belt.
6.
communication power supply three-core flame-retardant aluminium alloy flexible cable according to claim 1, is characterized in that described packed layer (3) is flame resistant filler layer.
7.
communication power supply three-core flame-retardant aluminium alloy flexible cable according to claim 6, is characterized in that described flame resistant filler layer is fire-retardant PP gasket for packing or flame-proof PVC packing.
8.
communication power supply three-core flame-retardant aluminium alloy flexible cable according to claim 1, is characterized in that described inner covering (5) is fire-retardant inner covering.
9.
communication power supply three-core flame-retardant aluminium alloy flexible cable according to claim 8, is characterized in that described fire-retardant inner covering is flame-proof PVC band or extrudes flame-proof PVC.
10.
communication power supply three-core flame-retardant aluminium alloy flexible cable according to claim 1, is characterized in that described armour (6) is steel band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510023458.3A CN104575731A (en) | 2015-01-17 | 2015-01-17 | Three-core inflaming retarding aluminum alloy soft cable for communication power source |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510023458.3A CN104575731A (en) | 2015-01-17 | 2015-01-17 | Three-core inflaming retarding aluminum alloy soft cable for communication power source |
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| CN104575731A true CN104575731A (en) | 2015-04-29 |
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| CN201510023458.3A Pending CN104575731A (en) | 2015-01-17 | 2015-01-17 | Three-core inflaming retarding aluminum alloy soft cable for communication power source |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202736568U (en) * | 2012-07-29 | 2013-02-13 | 安徽新华电缆(集团)有限公司 | Special type high strength long span aluminum alloy cable |
| CN103854737A (en) * | 2012-12-03 | 2014-06-11 | 上海东锐风电技术有限公司 | Cable special for wind electricity and manufacturing method thereof |
| CN103886954A (en) * | 2014-03-26 | 2014-06-25 | 中利科技集团股份有限公司 | Three-core inflaming retarding flexible cable for communication power supply |
| CN204407037U (en) * | 2015-01-17 | 2015-06-17 | 中利科技集团股份有限公司 | Communication power supply three-core flame-retardant aluminium alloy flexible cable |
-
2015
- 2015-01-17 CN CN201510023458.3A patent/CN104575731A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202736568U (en) * | 2012-07-29 | 2013-02-13 | 安徽新华电缆(集团)有限公司 | Special type high strength long span aluminum alloy cable |
| CN103854737A (en) * | 2012-12-03 | 2014-06-11 | 上海东锐风电技术有限公司 | Cable special for wind electricity and manufacturing method thereof |
| CN103886954A (en) * | 2014-03-26 | 2014-06-25 | 中利科技集团股份有限公司 | Three-core inflaming retarding flexible cable for communication power supply |
| CN204407037U (en) * | 2015-01-17 | 2015-06-17 | 中利科技集团股份有限公司 | Communication power supply three-core flame-retardant aluminium alloy flexible cable |
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Application publication date: 20150429 |