CN204215779U - The outer field multicore flame resistant cable of a kind of band - Google Patents
The outer field multicore flame resistant cable of a kind of band Download PDFInfo
- Publication number
- CN204215779U CN204215779U CN201420719077.XU CN201420719077U CN204215779U CN 204215779 U CN204215779 U CN 204215779U CN 201420719077 U CN201420719077 U CN 201420719077U CN 204215779 U CN204215779 U CN 204215779U
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- core
- conductor
- cable
- flame resistant
- outer field
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Abstract
The utility model discloses the outer field multicore flame resistant cable of a kind of band, comprising by being at least three stranded formed circular cable cores of segmentation segment conductor-core; Outer jacket is outside equipped with at cable core; Described segment conductor-core is made up of round conductor and the insulating barrier be extruded in outside round conductor.The utility model core is sector structure, compact conformation, and between core, gap is little, does not need to use the fire-retardant or refractory materials such as glass cord, glass fiber tape, mica tape, asbestos cord, reduces production cost, flame-retardant dependable performance.Conductor adopts circle to press structure, and technology difficulty is little and can not Damage to insulation layer.Different according to use occasion, sheath is set, various severe occasion can be applicable to and uses.
Description
Technical field
The utility model relates to cable conductor field, specifically the outer field multicore flame resistant cable of a kind of band.
Background technology
Along with taking place frequently of fire incident, people constantly deepen electric wire fire risk understanding, and the requirement of relevant department to performances such as electric wire fire protection flame retardings is also more and more higher.Features such as spreading fast, difficulty of putting out a fire to save life and property because cable fire has, produce secondary harm, recovery time is long can bring huge loss to the lives and properties of national economy and the people.Therefore fire-retardant, fire performance, the security reliability of people to electric wire proposes harsher service conditions.As strong in fire prevention, explosion-proof, overload capacity, long service life, the particular/special requirements such as under Fire Conditions, Fire lift, fire pump need keep the normal operation in certain hour, and cable is low-smoke low-halogen low toxicity after combustion, and even smokeless halogen-free is nontoxic.Cable-flame retardant, fire prevention measure reduce the important means that ignition of cable prolongs combustion, and key is being relied mainly on prevention, and all kinds of flame retardant cable, fire-resisting cable, fireproof cable are used widely.
Burning occurs any material all must possess following three conditions: combustible, oxidant and temperature (ignition source).The oxygen contained in air is a kind of oxidant, therefore, in Cable Construction Design, reducing gap between cable is a kind of conventional method with the existence that this reduces air, therefore, prior art often adopts the method arranging the fire-retardant or refractory material such as glass cord, glass fiber tape, mica tape, asbestos cord between each structure of cable, can improve fire-retardant, the fire resistance of cable.This method one is that use that is fire-retardant or refractory material can increase production cost in a large number, and two is fire-retardant or the performance of refractory material own is unreliable or have Shanghai to human body.In order to reduce the gap between core, also usually use sector conductor in prior art, extruded insulation forms stranding after segment conductor-core, and gap between core can be made to drop to minimum, but and gap between sheath still exist.Especially there is an a lot of difficult problem and drawback in process of production in the processing of sector conductor: one is that technology difficulty is large, in order to meet the enough flexibilities of sector conductor and stability, all higher to the characteristic requirements of the design of conductor structure, moulds of industrial equipment, equipment; Two is want conductor to adopt compact conductor for preventing moisture from infiltrating, and to improve the activity coefficient of wire, reduced outside diameter, reduce gap between conductor, and sector conductor is fan-shaped pressing, the shape of every layer is different, and the difficulty of pressing increases; Three is easily cause electric field to concentrate in each angle course of processing of sector conductor and damage cable insulation.
Utility model content
The utility model, in order to solve problems of the prior art, provides a kind of compact conformation, cost is low, technology difficulty is low, flame-retardant performance is good, is applicable to the multicore flame resistant cable of the band outer jacket of various severe occasion.
The outer field multicore flame resistant cable of one band described in the utility model, comprises by being at least three stranded formed circular cable cores of segmentation segment conductor-core; Outer jacket is outside equipped with at cable core; Described segment conductor-core is made up of round conductor and the insulating barrier be extruded in outside round conductor.
Further improvement, can be provided with between described insulating barrier and outer jacket and tighten layer.
Further improvement, described outer jacket and tighten between layer and can be provided with shield layer.
Further improvement, described tightening outside layer is coated with flame-retardant coating.
The beneficial effects of the utility model are: compared with prior art, the utility model core is sector structure, compact conformation, between core, gap is little, do not need to use the fire-retardant or refractory materials such as glass cord, glass fiber tape, mica tape, asbestos cord, reduce production cost, flame-retardant dependable performance.Conductor adopts circle to press structure, and technology difficulty is little and can not Damage to insulation layer.Different according to use occasion, sheath is set, various severe occasion can be applicable to and uses.
Accompanying drawing explanation
The structural representation of Fig. 1 to be the utility model be three fan-shaped insulated wire cores;
The structural representation of Fig. 2 to be the utility model be four fan-shaped insulated wire cores;
The structural representation of Fig. 3 to be the utility model be five fan-shaped insulated wire cores.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
One is as shown in Figure 1 with outer field multicore flame resistant cable, comprises by three stranded formed circular cable cores of segmentation segment conductor-core; Outer jacket 3 is outside equipped with at cable core; Described segment conductor-core is made up of round conductor 1 and the insulating barrier 2 be extruded in outside round conductor 1.
As shown in Figure 2, be with Fig. 1 difference: this circular cable core splits by four that segment conductor-core is stranded to be formed; Can be provided with between described insulating barrier 2 and outer jacket 3 and tighten layer 4; Tighten outside layer 4 and be coated with flame-retardant coating.
As shown in Figure 3, be with Fig. 1,2 differences: this circular cable core splits by five that segment conductor-core is stranded to be formed; Described outer jacket 3 and tighten between layer 4 and can be provided with shield layer 5.
The utility model embody rule approach is a lot; the above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model principle; can also make some improvement, these improvement also should be considered as protection range of the present utility model.
Claims (4)
1. being with an outer field multicore flame resistant cable, it is characterized in that: comprising by being at least three stranded formed circular cable cores of segmentation segment conductor-core; Outer jacket (3) is outside equipped with at cable core; Described segment conductor-core is by round conductor (1) and be extruded in round conductor (1) insulating barrier outward (2) and form.
2. the outer field multicore flame resistant cable of band according to claim 1, is characterized in that: can be provided with between described insulating barrier (2) and outer jacket (3) and tighten layer (4).
3. the outer field multicore flame resistant cable of band according to claim 2, is characterized in that: described outer jacket (3) and tighten between layer (4) and can be provided with shield layer (5).
4. the outer field multicore flame resistant cable of band according to claim 2, is characterized in that: described tightening outside layer (4) is coated with flame-retardant coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420719077.XU CN204215779U (en) | 2014-11-27 | 2014-11-27 | The outer field multicore flame resistant cable of a kind of band |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420719077.XU CN204215779U (en) | 2014-11-27 | 2014-11-27 | The outer field multicore flame resistant cable of a kind of band |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204215779U true CN204215779U (en) | 2015-03-18 |
Family
ID=52984428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420719077.XU Active CN204215779U (en) | 2014-11-27 | 2014-11-27 | The outer field multicore flame resistant cable of a kind of band |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204215779U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104464931A (en) * | 2014-11-27 | 2015-03-25 | 无锡江南电缆有限公司 | Flame-retardant and fire-resistant cable with outer layer |
-
2014
- 2014-11-27 CN CN201420719077.XU patent/CN204215779U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104464931A (en) * | 2014-11-27 | 2015-03-25 | 无锡江南电缆有限公司 | Flame-retardant and fire-resistant cable with outer layer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |