CN204332474U - A kind of multicore flame resistant cable with wire core - Google Patents
A kind of multicore flame resistant cable with wire core Download PDFInfo
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- CN204332474U CN204332474U CN201420717976.6U CN201420717976U CN204332474U CN 204332474 U CN204332474 U CN 204332474U CN 201420717976 U CN201420717976 U CN 201420717976U CN 204332474 U CN204332474 U CN 204332474U
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Abstract
The utility model discloses a kind of multicore flame resistant cable with wire core, comprise cable core (2) and tighten layer (1).Described cable core (2) is by core (3) circularly and several wire core (22) is stranded forms, and core (3) is positioned at cable core (2) center circularly; Described cable core (2) arranges outward and tightens layer (1).The multicore flame resistant cable of band wire core of the present utility model, power wire core is corrugated structure, and compact conformation between wire core, 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.
Description
Technical field
The utility model belongs to technical field of electric wires and cables, particularly a kind of multicore flame resistant cable with wire core.
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 corrugated conductor in prior art, extruded insulation forms stranding after corrugated 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 corrugated conductor: one is that technology difficulty is large, in order to meet the enough flexibilities of corrugated 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, reduces gap between conductor, and corrugated conductor to be corrugated press, the shape of every layer is different, the difficulty increase of pressing; Three is easily cause electric field to concentrate in each angle course of processing of corrugated conductor and damage cable insulation.
Utility model content
The utility model is overcome the shortcoming that prior art exists, and provides a kind of compact conformation, cost is low, technology difficulty is low, the multicore flame resistant cable of band wire core that flame-retardant performance is good.
A kind of multicore flame resistant cable with wire core of the present utility model, comprises cable core and tighten layer, it is characterized in that: described cable core is by core circularly and several wire core is stranded forms, and core is positioned at cable core center circularly; Described cable core arranges outward and tightens layer.
As the further improvement of technique scheme, described core is circularly be extruded with round insulation sheath composite bed outside bare conductor structure or bare conductor.
Another kind as technique scheme improves, and described core comprises round conductor and corrugated insulating sleeve composite bed, and described corrugated insulating sleeve composite bed is extruded in outside round conductor.
Another kind as technique scheme improves, and round conductor is round compacted comductor or presses circular molded line conductor.
Another kind as technique scheme improves, and described corrugated insulating sleeve composite bed is squash type or crowded tubular type.
Another kind as technique scheme improves, described in tighten layer and be wrapped, vertical bag, weave or extrude.
Another kind as technique scheme improves, described in tighten layer be braiding fire proofing, braid is coated with flame-retardant coating.
The multicore flame resistant cable of band wire core of the present utility model, power wire core is corrugated structure, and compact conformation between wire core, 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.
Accompanying drawing explanation
Fig. 1 is the multicore flame resistant cable structural representation of the band wire core of embodiment one;
Fig. 2 is the multicore flame resistant cable structural representation of the band wire core of embodiment two;
Fig. 3 is the multicore flame resistant cable structural representation of the band wire core of embodiment three.
Embodiment
Below in conjunction with accompanying drawing, a kind of multicore flame resistant cable with wire core that the utility model proposes is described in detail.
Embodiment one
As shown in Figure 1, the multicore flame resistant cable of the band wire core of the present embodiment, comprises cable core 2 and tightens layer 1.Described cable core 2 is by core 3 circularly and 5 cores 22 are stranded forms, and core 3 is positioned at cable core 2 center circularly; The outer setting of described cable core 2 tightens layer 1.
Described core circularly 3 is by the round insulation sheath composite bed extruded outside bare conductor and bare conductor.
Described core 22 comprises round conductor 221 and corrugated insulating sleeve composite bed 222, and described corrugated insulating sleeve composite bed 222 is extruded in outside round conductor 221.Round conductor 221 is for round compacted comductor or press circular molded line conductor.
Described corrugated insulating sleeve composite bed is squash type or crowded tubular type.Preferred squash type.
Described layer 1 of tightening is wrapped, vertical bag, weaves or extrude.The fire proofing of preferred braiding, braid is coated with flame-retardant coating.
Embodiment two
As shown in Figure 2, the multicore flame resistant cable of the band wire core of the present embodiment, comprises cable core 2 and tightens layer 1.Described cable core 2 is by core 3 circularly and 4 cores 22 are stranded forms, and core 3 is positioned at cable core 2 center circularly; The outer setting of described cable core 2 tightens layer 1.All the other settings are identical with the multicore flame resistant cable of the band wire core of embodiment one.
Embodiment three
As shown in Figure 3, the multicore flame resistant cable of the band wire core of the present embodiment, comprises cable core 2 and tightens layer 1.Described cable core 2 is by core 3 circularly and 3 cores 22 are stranded forms, and core 3 is positioned at cable core 2 center circularly; The outer setting of described cable core 2 tightens layer 1.Described core circularly 3 is bare conductor structure.All the other settings are identical with the multicore flame resistant cable of the band wire core of embodiment one.
Claims (7)
1. the multicore flame resistant cable with wire core, comprise cable core (2) and tighten layer (1), it is characterized in that: described cable core (2) is by core (3) circularly and several wire core (22) is stranded forms, and core (3) is positioned at cable core (2) center circularly; Described cable core (2) arranges outward and tightens layer (1).
2. the multicore flame resistant cable of band wire core according to claim 1, is characterized in that: described core circularly (3) is for being extruded with round insulation sheath composite bed outside bare conductor structure or bare conductor.
3. the multicore flame resistant cable of band wire core according to claim 1, it is characterized in that: described core (22) comprises round conductor (221) and corrugated insulating sleeve composite bed (222), described corrugated insulating sleeve composite bed (222) is extruded in round conductor (221) outward.
4. the multicore flame resistant cable of band wire core according to claim 3, is characterized in that: round conductor (221) is for round compacted comductor or press circular molded line conductor.
5. the multicore flame resistant cable of band wire core according to claim 3, is characterized in that: described corrugated insulating sleeve composite bed is squash type or crowded tubular type.
6. the multicore flame resistant cable of band wire core according to claim 1, is characterized in that: described in tighten layer (1) and be wrapped, vertical bag, weave or extrude.
7. the multicore flame resistant cable of band wire core according to claim 1, is characterized in that: described in tighten layer (1) be braiding fire proofing, braid is coated with flame-retardant coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420717976.6U CN204332474U (en) | 2014-11-26 | 2014-11-26 | A kind of multicore flame resistant cable with wire core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420717976.6U CN204332474U (en) | 2014-11-26 | 2014-11-26 | A kind of multicore flame resistant cable with wire core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204332474U true CN204332474U (en) | 2015-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420717976.6U Active CN204332474U (en) | 2014-11-26 | 2014-11-26 | A kind of multicore flame resistant cable with wire core |
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| CN (1) | CN204332474U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104409155A (en) * | 2014-11-26 | 2015-03-11 | 无锡江南电缆有限公司 | Cable with ground wire core |
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2014
- 2014-11-26 CN CN201420717976.6U patent/CN204332474U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104409155A (en) * | 2014-11-26 | 2015-03-11 | 无锡江南电缆有限公司 | Cable with ground wire core |
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