CN103886954A - Three-core inflaming retarding flexible cable for communication power supply - Google Patents
Three-core inflaming retarding flexible cable for communication power supply Download PDFInfo
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- CN103886954A CN103886954A CN201410115183.1A CN201410115183A CN103886954A CN 103886954 A CN103886954 A CN 103886954A CN 201410115183 A CN201410115183 A CN 201410115183A CN 103886954 A CN103886954 A CN 103886954A
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Abstract
The invention discloses a three-core inflaming retarding flexible cable for a communication power supply and belongs to the technical field of wires and cables. The three-core inflaming retarding flexible cable comprises three conducting cable cores which are respectively coated with an insulating layer, a wrapping tape layer wrapped on the conducting cable cores, filling layers and a protecting sheath layer or an inner lining layer, an armor layer and an armor layer outer protecting sheath, wherein cavities between the insulating layers and the wrapping tape layer are filled with the filling layers, the protecting sheath layer is located outside the wrapping tape layer, and the inner lining layer, the armor layer and the armor layer outer protecting sheath are located outside the wrapping tape layer in sequence. The three-core inflaming retarding flexible cable for the communication power supply is characterized in that the conducting cable cores are naked aluminum wire twisted conductors formed by twisting annealed naked aluminum wires with the diameter ranging from 0.2 mm to 1.15 mm, wherein the sectional area of each naked aluminum wire twisted conductor ranges from 1.5 mm<2> to 300 mm<2>, and the insulating layers, the protecting sheath layer and the armor layer outer protecting sheath are all made of inflaming retarding polyvinyl chloride. According to the three-core inflaming retarding flexible cable for the communication power supply, the flexibility performance is significantly improved, the minimum bend radius is four times the outer diameter of the cable, adaptability is good during laying construction, the manufacturing cost is low, the rated operational voltage of the cable and the adaptability of the cable to the environment temperature during cable laying are not influenced, the cost is reduced, working intensity of workers is relieved, and using safety is ensured.
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 flexible electric cable.
Background technology
Communication power supply flexible cable is a kind of electric connection line that supplies of communications facility, in the distribution system of telecommunication bureau station, distribution box cabinet and so on, is widely used.Communication power supply not only requires to have good flexibility with flexible cable, to conveniently lay under situation, and requires to have desirable anti-flammability in narrow space or similarly, to adapt to the instructions for use under the harsh occasion of fire-protection rating.
Can in disclosed Chinese patent literature, be seen in by the technical information of flexible cable about communication power supply, for example 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 " the flame-retardant crosslinking polyethylene insulated flexible cable of a kind of communication power supply ", CN202720953U introduces to be had " for watt form drag combustion shielded flexible cable of 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 that is not limited to exemplify above respectively has corresponding technique effect with flexible cable, 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, thereby soft degree can not meet the desired requirement.And because pliability is poor, bending radius is restricted, thus at narrow space, hindered by immovable object and even when the occasion at the place of talking in a roundabout way and so on is laid, very easily affect speed of application; Its two, owing to generally selecting with copper as the conductor of flexible cable, thereby not only there is the blindness that rationally uses raw material aspect under technology prejudice, and cause the manufacturing cost of flexible cable large; Its three, due to heavy weight, thereby not only logistics transportation, the cost of storage in link are high, and workmen's labour intensity is large in laid processes, to consume cost of labor high.
In view of above-mentioned prior art, still have improved necessity, the applicant has done useful design for this reason, has formed technical scheme described below.
Summary of the invention
Task of the present invention is to provide a kind of and contributes to significantly to enter to increase flexibility and use embodiment and conveniently lay and promote adaptability when small space is laid, be conducive to avoid the blindness that conductor material is selected and use reduction manufacturing cost, be of value to remarkable weight reduction and use and save such as logistics, storage, cable laying operation expense and alleviate workmen's labour intensity and have and be convenient to embody excellent anti-flammability and use and ensure and use safe communication power supply three-core flame-retardant flexible electric cable.
Task of the present invention completes like this, and a kind of communication power supply three-core flame-retardant flexible electric cable comprises three conductor wire cores that are covered with separately insulating barrier; Be wrapped in the belting layer outside three described conductor wire cores; Be filled in the packed layer in the hole between insulating barrier and belting layer; Be positioned at the restrictive coating outside described belting layer or be positioned at successively inner covering, armour and the armour oversheath outside belting layer, feature is: described conductor wire core is to be that stranded that form and the sectional area of the naked aluminium wire of 0.2-1.15 ㎜ is 1.5-300mm by the diameter through annealing in process
2naked aluminium wire stranded conductor, described insulating barrier, restrictive coating and armour oversheath are flame-proof polyvinyl chloride.
The outermost direction of lay of naked aluminium wire stranded conductor of the present invention is that left-hand is stranded, and direction of lay is between layers opposite each other.
The stranded joint square of naked aluminium wire stranded conductor of the present invention is 10～25 times of 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 flame-proof glass fibre band or fire-retardant Halogen band.
Packed layer of the present invention is fire-retardant packed layer.
Fire-retardant packed 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, because stranded that form and the sectional area of naked aluminium wire that to have adopted by diameter be 0.2-1.15mm is 1.5-300mm
2naked aluminium wire stranded conductor as conductor wire core, thereby flexibility significantly improved, minimum bending radius is the outside diameter of cable four times, in the time of cable laying operation, there is the good adaptability to the place such as small space, talking in a roundabout way; Two, owing under the prerequisite that has overcome technology prejudice, naked aluminium wire stranded conductor being substituted to the bare copper wire stranded conductor in prior art, thereby not only significantly reduced manufacturing cost, and the adaptability of ambient temperature is not affected when cable rated operational voltage and cable laying; Three, because overall weight is significantly alleviated for the copper conductor in prior art, thereby be conducive to reduce transport and storage and construction operation cost, and can alleviate workmen's operation intensity; Four, because insulating barrier, restrictive coating and armour oversheath are flame-proof polyvinyl chloride, thus can ensure use safety.
Accompanying drawing explanation
Fig. 1 is the cross sectional representation of first embodiment of the present invention structure.
Fig. 2 is the cross sectional representation of second embodiment of the present invention structure.
Embodiment
Refer to Fig. 1, as the first execution mode, three conductor wire cores 1 are provided, outside these three conductor wire cores 1, be coated with separately by insulating barrier 11, the belting layer 2 that is wrapped and is filled the post of by fire-retardant twining package tape outside three conductor wire cores 1, fire-retardant twining package tape preferably uses flame-proof glass fibre band (also can use fire-retardant Halogen band), and the packed layer 3(preferably being filled the post of by fire-retardant PP gasket for packing being filled between three conductor wire cores 1 and belting layer 2 also can use flame-proof PVC packing as packed layer 3).The squeeze jacket machinery generally using with wires and cables industry squeezes flame-proof polyvinyl chloride to overlay on outside belting layer 2, thereby at the outer formation restrictive coating 4 of belting layer 2.Hence one can see that, and three conductor wire cores 1, belting layer 2 and packed layers 3 are configured in fact cable core, and packed layer 3 plays the effect (under being wrapped of belting layer 2) that makes cable core rounding.Technical essential as technical scheme provided by the invention: stranded that form and the sectional area of naked aluminium wire that three conductor wire cores 1 are is all 0.2-1.15mm by the diameter through annealing in process is 1.5-300mm
2naked aluminium wire stranded conductor, and insulating barrier 2 is flame-proof polyvinyl chloride.
The direction of lay between layers of above mentioned naked aluminium wire stranded conductor is: it is stranded that outermost stranded mode should be left-hand, and it is contrary that the direction of lay between each layer keeps, in stranded process, be 10～25 times of naked aluminium wire stranded conductor diameter by twisting pitch control, being preferably 15～25 times, is 15～20 times better.
The i.e. communication power supply three-core flame-retardant flexible electric cable as shown in Figure 1 being obtained by embodiments of the invention is essentially the communication power supply three-core flame-retardant flexible electric cable of non-armored type, and its rated operational voltage is 450～750V and 600～1000V; Long-term work adaptive temperature is :-20 ℃～70 ℃; Minimum bending radius is greater than four times of the outside diameter of cable.
Refer to Fig. 2, as the second execution mode, outside belting layer 2 successively in conjunction with inner covering 5, armour 6 and armour oversheath 7, inner covering 5 is fire-retardant inner covering, the present embodiment is selected with extruding flame-proof PVC (also can use flame-proof PVC band), and armour 6 adopts steel band, and armour oversheath 7 is flame-proof polyvinyl chloride, squeeze and overlay on outside armour 6, all the other are all with the description to the first execution mode.Hence one can see that this execution mode of the present invention obtains communication power supply three-core flame-retardant flexible electric cable be as shown in Figure 2 essentially the communication power supply three-core flame-retardant flexible electric cable of armored type, bending radius is to be greater than 15 times of the outside diameter of cable.
A known class and two class aluminium conductors in conductor (being naked aluminium wire stranded conductor) and wires and cables industry that the present invention recommends have difference substantial and that be difficult to be 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 present invention adopts 5 classes (five classes) ultra-fine aluminium monofilament is stranded and forms, adopting aforesaid diameter is the naked aluminium wire stranded conductor of 0.2-1.15 ㎜, the conductor of this structure in China's wires and cables industry up to now in space state, and there is no national standard and/or industry standard can follow, the applicant is applied to the cable that communication power supply is used, and has the positive effect that is confirmed the technique effect referring in superincumbent technique effect hurdle.
The relation preferably but between cross section, the radical of naked aluminium wire and the diameter of naked aluminium wire monofilament of 16 kinds of specifications that are not limited to of above-mentioned conductor wire core 1 is by shown in following table:
Claims (10)
1.
a kind of communication power supply three-core flame-retardant flexible electric cable, comprises three conductor wire cores (1) that are covered with separately insulating barrier (11); Be wrapped in the outer belting layer (2) of described three conductor wire cores (1); Be filled in the packed layer (3) in the hole between insulating barrier (11) and belting layer (2); Be positioned at the outer restrictive coating (4) of described belting layer (2) or be positioned at successively belting layer (2) outer inner covering (5), armour (6) and armour oversheath (7), being characterized in: described conductor wire core (1) is to be that stranded that form and the sectional area of the naked aluminium wire of 0.2-1.15 ㎜ is 1.5-300mm by the diameter through annealing in process 2 naked aluminium wire stranded conductor, described insulating barrier (11), restrictive coating (4) and armour oversheath (7) are flame-proof polyvinyl chloride.
2.
communication power supply three-core flame-retardant flexible electric cable according to claim 1, is characterized in that the outermost direction of lay of described naked aluminium wire stranded conductor is that left-hand is stranded, and direction of lay is between layers opposite each other.
3.
communication power supply three-core flame-retardant flexible electric cable according to claim 1 and 2, the stranded joint square that it is characterized in that described naked aluminium wire stranded conductor is 10～25 times of naked aluminium wire stranded conductor diameter.
4.
communication power supply three-core flame-retardant flexible electric 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 flexible electric cable according to claim 1, is characterized in that described fire-retardant twining package tape is flame-proof glass fibre band or fire-retardant Halogen band.
6.
communication power supply three-core flame-retardant flexible electric cable according to claim 1, is characterized in that described packed layer (3) is fire-retardant packed layer.
7.
communication power supply three-core flame-retardant flexible electric cable according to claim 6, is characterized in that described fire-retardant packed layer is fire-retardant PP gasket for packing or flame-proof PVC packing.
8.
communication power supply three-core flame-retardant flexible electric 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 flexible electric 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 flexible electric 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 |
|---|---|---|---|
| CN201410115183.1A CN103886954A (en) | 2014-03-26 | 2014-03-26 | Three-core inflaming retarding flexible cable for communication power supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410115183.1A CN103886954A (en) | 2014-03-26 | 2014-03-26 | Three-core inflaming retarding flexible cable for communication power supply |
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| CN103886954A true CN103886954A (en) | 2014-06-25 |
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| CN201410115183.1A Pending CN103886954A (en) | 2014-03-26 | 2014-03-26 | Three-core inflaming retarding flexible cable for communication power supply |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104575829A (en) * | 2015-01-17 | 2015-04-29 | 中利科技集团股份有限公司 | Five-core inflaming retarding aluminum alloy soft cable for communication power source |
| CN104575731A (en) * | 2015-01-17 | 2015-04-29 | 中利科技集团股份有限公司 | Three-core inflaming retarding aluminum alloy soft cable for communication power source |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1768133A2 (en) * | 2005-09-22 | 2007-03-28 | HEW-KABEL /CDT GmbH & Co. KG | Highly flexible shielded electrical cable for high frequency data transmission in rotatable monitors, especially for rotatable LCD devices |
| CN203406054U (en) * | 2013-05-14 | 2014-01-22 | 安徽华星电缆集团有限公司 | Fireproof aluminum conductor cable |
| CN203433880U (en) * | 2013-09-13 | 2014-02-12 | 安徽凌宇电缆科技有限公司 | Scandium-contained aluminium alloy conductor-based medium-voltage flame-retardant power cable |
| CN203773971U (en) * | 2014-03-26 | 2014-08-13 | 中利科技集团股份有限公司 | Three-core flame-retardant flexible cable used for communication power supply |
-
2014
- 2014-03-26 CN CN201410115183.1A patent/CN103886954A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1768133A2 (en) * | 2005-09-22 | 2007-03-28 | HEW-KABEL /CDT GmbH & Co. KG | Highly flexible shielded electrical cable for high frequency data transmission in rotatable monitors, especially for rotatable LCD devices |
| CN203406054U (en) * | 2013-05-14 | 2014-01-22 | 安徽华星电缆集团有限公司 | Fireproof aluminum conductor cable |
| CN203433880U (en) * | 2013-09-13 | 2014-02-12 | 安徽凌宇电缆科技有限公司 | Scandium-contained aluminium alloy conductor-based medium-voltage flame-retardant power cable |
| CN203773971U (en) * | 2014-03-26 | 2014-08-13 | 中利科技集团股份有限公司 | Three-core flame-retardant flexible cable used for communication power supply |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104575829A (en) * | 2015-01-17 | 2015-04-29 | 中利科技集团股份有限公司 | Five-core inflaming retarding aluminum alloy soft cable for communication power source |
| CN104575731A (en) * | 2015-01-17 | 2015-04-29 | 中利科技集团股份有限公司 | Three-core inflaming retarding aluminum alloy soft cable for communication power source |
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Application publication date: 20140625 |