CN205177476U - 450 750V environment -friendly fire -resistant electric wire for building fire -retardant - Google Patents
450 750V environment -friendly fire -resistant electric wire for building fire -retardant Download PDFInfo
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- CN205177476U CN205177476U CN201520872717.5U CN201520872717U CN205177476U CN 205177476 U CN205177476 U CN 205177476U CN 201520872717 U CN201520872717 U CN 201520872717U CN 205177476 U CN205177476 U CN 205177476U
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Abstract
The utility model relates to a 450 750V environment -friendly fire -resistant electric wire for building fire -retardant, fire -retardant fire -resistant electric wire includes conductor, flame retardant coating and insulating layer, the flame retardant coating cladding is in the periphery of conductor, the pottery rubber flame retardant coating that the flame retardant coating becomes for potteryization rubber, the insulating layer cladding is in the periphery of flame retardant coating, the insulating layer does not hang down the steamed low fire -retardant insulating layer of cigarette of nothing that cigarette flameresistant material made for there being bittern, the thickness of insulating layer is T1, the external diameter of conductor is D, wherein 0.02D <= T1 <= 0.02D+2mm. The utility model discloses a 450 750V environment -friendly fire -resistant electric wire for building fire -retardant, have that the refractiveness is good, the environmental protection, still can the unblocked advantage of holding circuit in the conflagration.
Description
Technical field
The utility model belongs to wire field, is specifically related to a kind of 450/750V environment-friendly type building flame-retardant electric wire.
Background technology
In the last few years, along with the propelling of urbanization and urban planning and construction, the cable more more options buried-pipe laying mode when transformation and the construction of urban distribution network, the sharp increase of urban population, skyscraper, hotel, large supermarket, hospital, station, airport constantly increases, subway, the construction of tunnel traffic, and large-scale Public Physical Education, public place of entertainment, the increase of public transit facility, fire-fighting, the importance of fire safety shows especially out, how in the event of a fire, ensure the unimpeded of electric power and communication within a certain period of time, win valuable rescue time to greatest extent, the injures and deaths of minimizing personnel and the loss of lives and properties become people's problem in the urgent need to address.
At present, the fire-resisting cable that domestic and international common employing magnesium oxide mineral fire-proof insulation cable and mica tape are wound around goes to solve the above problems, but magnesium oxide mineral fire-proof insulation cable needs special manufacturing and processing equipment, material price is expensive, fund input is large, production and processing difficulty, and transport is laid and installs and uses inconvenience, practical application, by restriction to a certain extent, is difficult to extensive universal use.And the fire-resisting cable that mica tape is wound around is owing to needing multi-lay winding in process of production, add that process conditions limit, overlapping the slot place is easily caused to occur defect, and mica tape meeting embrittlement after burning, easily come off, cause fire-resistant weak effect, be difficult to ensure communication, electric power in case of fire safe and smooth.
Utility model content
In order to overcome the deficiencies in the prior art, the purpose of this utility model is to provide that a kind of fire resistance is good, environmental protection, in a fire still can the unimpeded 450/750V environment-friendly type building flame-retardant electric wire of holding circuit.
For solving the problem, the technical scheme that the utility model adopts is as follows:
A kind of 450/750V environment-friendly type building flame-retardant electric wire, described flame-retardant electric wire comprises conductor, flame retardant coating and insulating barrier; Described flame retardant coating is coated on the periphery of conductor, and described flame retardant coating is the ceramic rubber flame retardant coating that ceramic rubber is made; Described insulating barrier is coated on the periphery of flame retardant coating, and described insulating barrier is the LSOH anti-flaming insulating barrier that LSOH anti-flaming material is made; The thickness of described insulating barrier is T1, and the external diameter of described conductor is D, wherein 0.02D≤T1≤0.02D+2mm.
In the utility model, preferred scheme is described conductor is copper conductor.
In the utility model, preferred scheme is T1=0.02D+1mm.
In the utility model, preferred scheme is described conductor is single copper conductor.
In the utility model, to be described conductor formed by least two copper flexible conductors are stranded preferred scheme.
In the utility model, preferred scheme is the thickness of described flame retardant coating is T2, wherein, and D:T2=1:2-4.
In the utility model, preferred scheme is described insulating barrier is the halogen-free polyolefin plastic insulating layer that halogen-free polyolefin plastics are made.
Compared to existing technology, the beneficial effects of the utility model are: the design adopting said structure, the peripheral coated ceramic rubber flame retardant coating of conductor, with low cost, under the ablation of flame, namely start the isolation layer sintering hard ceramic-like housing into after burning 1-2min, effectively can stop the cable that burns away of flame, fire resistance is good; The peripheral coated LSOH anti-flaming insulating barrier of flame retardant coating, not only environmental protection, make cable by the 2-3min in flame combustion early stage the smog that produces be nontoxic, Halogen, but also can accelerate to give up smoking; And the thickness of flame retardant coating and conductor adopts the design of 0.02D≤T1≤0.02D+2mm; as T1 < 0.02D; flame retardant coating is excessively thin; flame retardant coating, when being heated inequality, easily forms some perforation, can not give conductor protection; as T1 > 0.02D+2mm; make wire excessively thick, take up room, and cost is higher.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Accompanying drawing explanation
The utility model embodiment is illustrated further below in conjunction with accompanying drawing.
Fig. 1 is the structural representation of the flame-retardant electric wire of embodiment 1;
Wherein, 1, conductor; 2, flame retardant coating; 3, insulating barrier.
Embodiment
Embodiment 1
A kind of 450/750V environment-friendly type building flame-retardant electric wire, described flame-retardant electric wire comprises conductor 1, flame retardant coating 2 and insulating barrier 3; Described flame retardant coating is coated on the periphery of conductor, and described flame retardant coating is the ceramic rubber flame retardant coating that ceramic rubber is made; Described insulating barrier is coated on the periphery of flame retardant coating, and described insulating barrier is the LSOH anti-flaming insulating barrier that LSOH anti-flaming material is made; The thickness of described insulating barrier is T1, and the external diameter of described conductor is D, wherein 0.02D≤T1≤0.02D+2mm.
Adopt the design of said structure, the peripheral coated ceramic rubber flame retardant coating of conductor, with low cost, under the ablation of flame, namely start the isolation layer sintering hard ceramic-like housing into after burning 1-2min, effectively can stop the cable that burns away of flame, fire resistance is good; The peripheral coated LSOH anti-flaming insulating barrier of flame retardant coating, not only environmental protection, make cable by the 2-3min in flame combustion early stage the smog that produces be nontoxic, Halogen, but also can accelerate to give up smoking; And the thickness of flame retardant coating and conductor adopts the design of 0.02D≤T1≤0.02D+2mm; as T1 < 0.02D; flame retardant coating is excessively thin; flame retardant coating, when being heated inequality, easily forms some perforation, can not give conductor protection; as T1 > 0.02D+2mm; make wire excessively thick, take up room, and cost is higher.
Flame-retardant electric wire of the present utility model, conductor wherein does not do special restriction, includes but not limited to that described conductor is copper conductor and silver conductor.
Best balance is reached, T1=0.02D+1mm in order to flame-retardant effect, cable cost and cable can be made to take up room.
Flame-retardant electric wire of the present utility model, conductor can be single or at least two stranded formation of copper flexible conductor; Concrete, described copper conductor is single copper conductor, or described conductor is formed by least two copper flexible conductors are stranded; Stranded mode includes but not limited to that single-screw is stranded and SZ is stranded.
In flame-retardant electric wire of the present utility model, the thickness of described flame retardant coating is T2, wherein, and D:T2=1:2-4.
In flame-retardant electric wire of the present utility model, described insulating barrier is the LSOH anti-flaming insulating barrier that LSOH anti-flaming material is made, and wherein the concrete kind of LSOH anti-flaming material can be not particularly limited.Concrete, insulating barrier is the halogen-free polyolefin plastic insulating layer that halogen-free polyolefin plastics are made.
Above-mentioned execution mode is only preferred implementation of the present utility model; can not limit the scope of the utility model protection with this, change and the replacement of any unsubstantiality that those skilled in the art does on basis of the present utility model all belong to the utility model scope required for protection.
Claims (7)
1. a 450/750V environment-friendly type building flame-retardant electric wire, is characterized in that: described flame-retardant electric wire comprises conductor, flame retardant coating and insulating barrier; Described flame retardant coating is coated on the periphery of conductor, and described flame retardant coating is the ceramic rubber flame retardant coating that ceramic rubber is made; Described insulating barrier is coated on the periphery of flame retardant coating, and described insulating barrier is the LSOH anti-flaming insulating barrier that LSOH anti-flaming material is made; The thickness of described insulating barrier is T1, and the external diameter of described conductor is D, wherein 0.02D≤T1≤0.02D+2mm.
2. 450/750V environment-friendly type building flame-retardant electric wire according to claim 1, is characterized in that: described conductor is copper conductor.
3. 450/750V environment-friendly type building flame-retardant electric wire according to claim 1, is characterized in that: T1=0.02D+1mm.
4. 450/750V environment-friendly type building flame-retardant electric wire according to claim 1, is characterized in that: described conductor is single copper conductor.
5. 450/750V environment-friendly type building flame-retardant electric wire according to claim 1, is characterized in that: described conductor is formed by least two copper flexible conductors are stranded.
6. 450/750V environment-friendly type building flame-retardant electric wire according to claim 1, is characterized in that: the thickness of described flame retardant coating is T2, wherein, and D:T2=1:2-4.
7. 450/750V environment-friendly type building flame-retardant electric wire according to claim 1, is characterized in that: described insulating barrier is the halogen-free polyolefin plastic insulating layer that halogen-free polyolefin plastics are made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520872717.5U CN205177476U (en) | 2015-10-31 | 2015-10-31 | 450 750V environment -friendly fire -resistant electric wire for building fire -retardant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520872717.5U CN205177476U (en) | 2015-10-31 | 2015-10-31 | 450 750V environment -friendly fire -resistant electric wire for building fire -retardant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205177476U true CN205177476U (en) | 2016-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520872717.5U Active CN205177476U (en) | 2015-10-31 | 2015-10-31 | 450 750V environment -friendly fire -resistant electric wire for building fire -retardant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205177476U (en) |
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2015
- 2015-10-31 CN CN201520872717.5U patent/CN205177476U/en active Active
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| C14 | Grant of patent or utility model | ||
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