CN201331962Y - Low-smoke non-halogen flame retardant fire-resistant cable - Google Patents
Low-smoke non-halogen flame retardant fire-resistant cable Download PDFInfo
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- CN201331962Y CN201331962Y CNU200820178718XU CN200820178718U CN201331962Y CN 201331962 Y CN201331962 Y CN 201331962Y CN U200820178718X U CNU200820178718X U CN U200820178718XU CN 200820178718 U CN200820178718 U CN 200820178718U CN 201331962 Y CN201331962 Y CN 201331962Y
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Abstract
The utility model discloses a low-smoke non-halogen flame retardant fire-resistant cable, which comprises one or more insulated cores. The insulated core comprises conductors in the center of the core and a conductor insulating layer (3) coated outside each conductor (1), the outermost layer of the cable is a cable sheath (7), and an oxygen isolating layer (6) is arranged on the inner layer of the cable sheath (7) to cover the insulated cores. By using the above technical scheme, the low-smoke non-halogen flame retardant fire-resistant cable can not only transmit electricity under the normal working conditions, but also can keep safe operation for a while in case of combustion. The oxygen isolating layer is high-temperature resistant and can decompose to form an oxygen isolating casing to take flame retardant action, and the low-smoke non-halogen oxygen isolating layer generates less smoke and releases non-halogen and non-toxic gases in case of flame combustion. The low-smoke non-halogen flame retardant fire-resistant cable can remarkably reduce the harm to human body, instruments and equipment in case of fire occurrence.
Description
Technical field
The utility model belongs to the technical field of power cable, and specifically, the utility model relates to a kind of low-smoke non-halogen flame-retardant fire-resisting cable.
Background technology
Along with the high speed development of economic construction and people to growth in the living standard, traditional cable can not satisfy the demands.Particularly aspect safety and environmental protection, more and more high to the requirement of cable.
Traditional cable great majority all are combustible materials, and the burning back produces solid granule and forms smog, has reduced light transmittance, influence people's escape and non-refractory during breaking out of fire; Some material also contains halogen, and the pernicious gas that halogen burning back produces has very strong toxicity, the respiratory system of harm people.In addition, the halogen gas that the halogen containing polymers burning discharges can generate corrosivity pernicious gas (hydrogen halides) when combining with water vapour, some equipment and building are caused corrosion.And smog and toxic gas are the key factors that hinders rescue and escape, causes casualties in the fire.
The utility model content
Problem to be solved in the utility model provides a kind of low-smoke non-halogen flame-retardant fire-resisting cable, its objective is to adapt to safety and environmental requirement, reduces the release of harmful substance at high temperature, guarantees that cable can normally move in the regular hour after the burning.
To achieve these goals, the technical scheme taked of the utility model is:
This low-smoke non-halogen flame-retardant fire-resisting cable provided by the utility model, comprise one or more insulated wire cores, the structure of described insulated wire cores be the core center conductor, be wrapped in the outer insulating layer of conductor of every conductor, the outermost layer of described cable is a cable cover(ing), internal layer at described cable cover(ing), if oxygen barrier layer wraps all insulated wire cores.
For making the utility model more perfect, more detailed and concrete technical scheme below also further having proposed, to obtain best practical function, realize goal of the invention better, and improve novelty of the present utility model and creativeness:
The material of oxygen barrier layer described in the utility model is the low smoke and zero halogen material, and this material at high temperature decomposes the protective layer that the back produces oxygen barrier.
Insulating layer of conductor described in the utility model adopts the polyolefin of low-smoke non-halogen flame-retardant, adds special modifier, fire retardant and antioxidant.
Cable cover(ing) described in the utility model adopts low-smoke halogen-free flame-retardant sheath, and its base-material is the EVA material of halogen-free environmental, adds the Al (OH) of environmental protection
3Fire retardant, described EVA material macromolecular structure is: [CH
2-CH
2]
n[CH
2-COOH]
m
In described oxygen barrier layer, the outside of all insulated wire cores, establish glass fiber tape, wrap all insulated wire cores.
Above-described glass fiber tape adopts wrapped package structure.
In the space in glass fiber tape described in the utility model, between each conductor, establish glass cord.
Between conductor described in the utility model and the insulating layer of conductor, be provided with mica tape, described mica tape wraps up conductor.
The utility model adopts technique scheme, and the low-smoke non-halogen flame-retardant fire-resisting cable is except can be under normal condition of work the electric energy transmitting, the safe operation that also can keep certain hour under combustion case.Oxygen barrier layer can be high temperature resistant, decomposes the shell that the back produces oxygen barrier, plays fire retardation, and this oxygen barrier layer also is low smoke and zero halogen, and it produces few smog, the gas Halogen of release, nontoxic under the flame combustion situation.When fire takes place, can significantly reduce injury to human body, instrument and equipment.
Description of drawings
Below expressed content of the accompanying drawing of this specification and the mark among the figure are made brief description:
The cross-sectional structure schematic diagram of the low-smoke non-halogen flame-retardant fire-resisting cable of three cores that Fig. 1 relates to for the utility model;
Fig. 2 is the structural representation of the low-smoke non-halogen flame-retardant fire-resisting cable cross section of single core;
Fig. 3 is the cross-sectional structure schematic diagram of the low-smoke non-halogen flame-retardant fire-resisting cable of twin-core;
Fig. 4 is the cross-sectional structure schematic diagram of the low-smoke non-halogen flame-retardant fire-resisting cable of four-core;
Fig. 5 is the cross-sectional structure schematic diagram of the low-smoke non-halogen flame-retardant fire-resisting cable of five cores.
Be labeled as among the figure:
1, conductor, 2, mica tape, 3, insulating barrier, 4, glass cord, 5, glass fiber tape, 6, oxygen barrier layer, 7, cable cover(ing).
Embodiment
Contrast accompanying drawing below, by description to embodiment, to effect and operation principle, the manufacturing process of the mutual alignment between the shape of embodiment of the present utility model such as related each member, structure, the each several part and annexation, each several part and manipulate method etc., be described in further detail, inventive concept of the present utility model, technical scheme had more complete, accurate and deep understanding to help those skilled in the art.
Be to adapt to environmental requirement, reduce the release of harmful substance, guarantee that cable can normally move a period of time after burning and the low-smoke non-halogen flame-retardant fire-resisting cable developed.The of the present utility model structure expressed as Fig. 1, the utility model is a kind of low-smoke non-halogen flame-retardant fire-resisting cable, comprises one or more insulated wire cores, the structure of described insulated wire cores be the core center conductor 1, be wrapped in the outer insulating layer of conductor 3 of every conductor 1.When the many eradications of employing edge core, all insulated wire cores bunchy arranged side by side; The outermost layer of described cable is a cable cover(ing) 7.The conductor 1 of this cable adopts the 1st class or 2 class twisted copper conductors, selects the conductor 1 of certain specification and the radical of definite single line for use according to standard GB/T3956-1997.According to above-mentioned requirements copper cash is drawn into required specification, wire drawing is carried out on wire drawing machine and conductor 1 is annealed, and the resistance after the annealing should reach standard code, and the single line surface should smooth, no greasy dirt, cut etc.
Concrete condition according to conductor is selected suitable thread reaming machine, and turning to of the rotating speed of the wrapped head of the speed of twisted wire, the rotating speed of traction, wrapped mica tape and wrapped head is all up to specification.
In order to solve the problem that exists at the described present known technology of this specification background technology part and to overcome its defective, adapt to safety and environmental requirement, be implemented in the release that reduces the cable harmful substance under the high temperature, guarantee cable in the goal of the invention that can normally move in the regular hour after the burning, the technical scheme that the utility model is taked is:
This low-smoke non-halogen flame-retardant fire-resisting cable provided by the utility model at the internal layer of described cable cover(ing) 7, is established oxygen barrier layer 6, wraps all insulated wire cores.Oxygen barrier layer 6 is extruded in the outside of insulated wire cores, and temperature can not be too high in order to avoid oxygen barrier layer 6 decomposes when extruding oxygen barrier layer 6.
Oxygen barrier layer 6 can be high temperature resistant, decomposes the shell that the back produces oxygen barrier, plays fire retardation, and this oxygen barrier layer 6 also is low smoke and zero halogen, and it produces few smog, the gas Halogen of release, nontoxic under the flame combustion situation.When fire takes place, can significantly reduce injury to human body, instrument and equipment, delay stretching of the condition of a disaster.
Closely connect between above-mentioned each member, constitute one.The generation of low-smoke non-halogen flame-retardant fire-resisting cable, existing safety and environmental protection effect can be met the need of market in safe operation a period of time under the fire situation again.
The utility model also provides following concrete exemplifying embodiment, supplies those skilled in the art's reference when implementing the utility model, selects for use:
Embodiment one:
The material of oxygen barrier layer 6 described in the utility model is the low smoke and zero halogen material, and this material at high temperature decomposes the protective layer that the back produces oxygen barrier.
Embodiment two:
Insulating layer of conductor 3 described in the utility model adopts low smoke halogen-free flame-retardant polyolefin, adds special modifier, fire retardant and antioxidant.
Insulating barrier 3 adopts above-mentioned material and additive, also add other special auxiliary agent, the bulk goods that makes through special process processing, can on common polyvinyl chloride plastic extruding machine (L/D 〉=20), extrude, extrude and will carry out according to operation card, the speed of the working temperature of plastic extruding machine various piece, the rotating speed of screw rod, traction is up to specification, with reference to the suitable mould of the size Selection of core, can not be eccentric during unwrapping wire, each parts are wanted co-ordination.Stop insulating surface problems such as bubble, flake, fold are arranged.
Embodiment three:
Cable cover(ing) 7 described in the utility model adopts low-smoke halogen-free flame-retardant sheath, and its base-material is the EVA material of halogen-free environmental, adds the AlOH3 fire retardant of environmental protection, and described EVA material macromolecular structure is: [CH
2-CH
2]
n[CH
2-COOH]
m
It is the EVA material of halogen-free environmental that the material of cable cover(ing) 7 adopts the low-smoke halogen-free flame-retardant sheath base-material, adds the Al (OH) of environmental protection
3Fire retardant, wherein, EVA material macromolecular structure is:
[CH
2-CH
2]
n[CH
2-COOH]
m。
The expressing technique of cable cover(ing) 7 is similar to the expressing technique of insulating barrier 3.
Embodiment four:
In described oxygen barrier layer 6, the outside of all insulated wire cores, establish glass fiber tape 5, wrap all insulated wire cores.
Embodiment five:
Embodiment six
In the space in described glass fiber tape 5, between each insulated wire cores, establish glass cord 4.
Fill in space to insulated wire cores, promptly with glass fiber tape 5 space of stranding is filled up, and keeps the rounding property of cable, and by the air content in the closely knit filling minimizing cable core.
Embodiment seven:
Between conductor 1 described in the utility model and the insulating layer of conductor 3, be provided with mica tape 2, described mica tape 2 is with conductor 1 parcel.
Embodiment eight:
Be conductor 1, mica tape 2, insulating barrier 3, glass cord 4, glass fiber tape 5, oxygen barrier layer 6, cable cover(ing) 7 from inside to outside successively.Select suitable cabler to carry out stranding, the direction of stranding is generally dextrad.The stranding lay ratio will comply with relevant regulations, and the speed of each parts also will be followed the pertinent regulations of operation card.
Embodiment nine:
The general industrial power circuit adopts the cable of two-phase or triple line, so insulated wire cores can be respectively 1～5 core, promptly conductor 1 be single, two, three, four or five.Its structure is respectively referring to Fig. 1 to Fig. 5.
In conjunction with the accompanying drawings the utility model has been carried out exemplary description above; obviously the utility model specific implementation is not subjected to the restriction of aforesaid way; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technical scheme carry out; or design of the present utility model and technical scheme are directly applied to other occasion without improving, all within protection range of the present utility model.
Claims (8)
1, a kind of low-smoke non-halogen flame-retardant fire-resisting cable, comprise one or more insulated wire cores, the structure of described insulated wire cores be the core center conductor (1), be wrapped in the outer insulating layer of conductor (3) of every conductor (1), the outermost layer of described cable is cable cover(ing) (7), it is characterized in that: internal layer in described cable cover(ing) (7), if oxygen barrier layer (6) wraps all insulated wire cores.
2, according to the described low-smoke non-halogen flame-retardant fire-resisting cable of claim 1, it is characterized in that: the material of described oxygen barrier layer (6) is the low smoke and zero halogen material, and this material at high temperature decomposes the protective layer that the back produces oxygen barrier.
3, according to claim 1 or 2 described low-smoke non-halogen flame-retardant fire-resisting cables, it is characterized in that: described insulating layer of conductor (3) adopts low smoke halogen-free flame-retardant polyolefin, adds special modifier, fire retardant and antioxidant.
4, according to claim 1 or 2 described low-smoke non-halogen flame-retardant fire-resisting cables, it is characterized in that: described cable cover(ing) (7) is a base-material with the EVA material of halogen-free environmental, adds the Al (OH) of environmental protection
3The low-smoke halogen-free flame-retardant sheath that fire retardant is made.
5, according to claim 1 or 2 described low-smoke non-halogen flame-retardant fire-resisting cables, it is characterized in that: in described oxygen barrier layer (6), the outside of all insulated wire cores, establish glass fiber tape (5), wrap all insulated wire cores.
6, according to the described low-smoke non-halogen flame-retardant fire-resisting cable of claim 5, it is characterized in that: described glass fiber tape (5) adopts wrapped package structure.
7, according to the described low-smoke non-halogen flame-retardant fire-resisting cable of claim 6, it is characterized in that: in the space in described glass fiber tape (5), between each insulated wire cores, establish glass cord (4).
8, according to claim 1 or 2 described low-smoke non-halogen flame-retardant fire-resisting cables, it is characterized in that: between described conductor (1) and the insulating layer of conductor (3), be provided with mica tape (2), described mica tape (2) wraps up conductor (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820178718XU CN201331962Y (en) | 2008-11-12 | 2008-11-12 | Low-smoke non-halogen flame retardant fire-resistant cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820178718XU CN201331962Y (en) | 2008-11-12 | 2008-11-12 | Low-smoke non-halogen flame retardant fire-resistant cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201331962Y true CN201331962Y (en) | 2009-10-21 |
Family
ID=41225344
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820178718XU Expired - Fee Related CN201331962Y (en) | 2008-11-12 | 2008-11-12 | Low-smoke non-halogen flame retardant fire-resistant cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201331962Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101853716A (en) * | 2010-05-28 | 2010-10-06 | 湖南金杯电缆有限公司 | High-flame-resistance environment-friendly refractory control cable for nuclear power station |
| CN105462047A (en) * | 2015-12-15 | 2016-04-06 | 中冠电缆有限公司 | Flame retardant EVA cable material containing modified camellia oleifera shells and preparation method thereof |
-
2008
- 2008-11-12 CN CNU200820178718XU patent/CN201331962Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101853716A (en) * | 2010-05-28 | 2010-10-06 | 湖南金杯电缆有限公司 | High-flame-resistance environment-friendly refractory control cable for nuclear power station |
| CN101853716B (en) * | 2010-05-28 | 2012-08-22 | 湖南金杯电缆有限公司 | High-flame-resistance environment-friendly refractory control cable for nuclear power station |
| CN105462047A (en) * | 2015-12-15 | 2016-04-06 | 中冠电缆有限公司 | Flame retardant EVA cable material containing modified camellia oleifera shells and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091021 Termination date: 20131112 |