CN104409149A - Flame-retardant and refractory cable - Google Patents
Flame-retardant and refractory cable Download PDFInfo
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- CN104409149A CN104409149A CN201410690012.1A CN201410690012A CN104409149A CN 104409149 A CN104409149 A CN 104409149A CN 201410690012 A CN201410690012 A CN 201410690012A CN 104409149 A CN104409149 A CN 104409149A
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- flame
- retardant
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Abstract
The invention discloses a flame-retardant and refractory cable comprises a circular cable core. The circular cable core is stranded by at least three segmentation sector insulating wire cores. A tightening layer is disposed outside the cable core. Each segmentation sector insulating wire core comprises a circular conductor and a sector insulating layer wrapping the circular conductor in a pressed manner. The flame-retardant and refractory cable has the advantages that the wire cores are of a sector structure, the wire cores are compact in structure, gaps among the wire cores are small, flame-retardant or refractory materials such as glass fiber cords, glass fiber bands, mica bands and asbestos cords are not needed, production cost is lowered, and reliable flame-retardant and refractory performance is achieved; each conductor is of a circular compression structure, is small in process difficulty and does not damage the corresponding insulating layer.
Description
Technical field
The present invention relates to cable conductor field, specifically a kind of multicore flame resistant cable.
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.
Summary of the invention
The present invention in order to solve problems of the prior art, provide a kind of compact conformation, cost be low, technology difficulty is low, flame-retardant performance is good, multicore flame resistant cable.
A kind of multicore flame resistant cable of the present invention, comprises by being at least three stranded formed circular cable cores of the fan-shaped insulated wire cores of segmentation; Be outside equipped with at cable core and tighten layer; Described fan-shaped insulated wire cores is made up of round conductor, the fan-shaped insulating barrier be extruded in outside round conductor.
Further improvement, described tightening outside layer is coated with flame-retardant coating.
Further improvement, described round conductor is for pressing circular molded line conductor.
Beneficial effect of the present invention is: compared with prior art, core of the present invention 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.
Accompanying drawing explanation
The structural representation of Fig. 1 to be the present invention be three fan-shaped insulated wire cores;
The structural representation of Fig. 2 to be the present invention be four fan-shaped insulated wire cores;
The structural representation of Fig. 3 to be the present invention be five fan-shaped insulated wire cores.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
A kind of multicore flame resistant cable as shown in Figure 1, comprises by three stranded formed circular cable cores of the fan-shaped insulated wire cores of segmentation; Be outside equipped with at cable core and tighten layer 3; Described fan-shaped insulated wire cores is made up of round conductor 1, the fan-shaped insulating barrier 2 be extruded in outside round conductor 1; Described tightening outside layer 3 is coated with flame-retardant coating.
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.
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.
Embody rule approach of the present invention is a lot, and the above is only the preferred embodiment of the present invention, should be understood that; for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvement, these improvement also should be considered as protection scope of the present invention.
Claims (3)
1. a flame resistant cable, is characterized in that: comprise by being at least three stranded formed circular cable cores of the fan-shaped insulated wire cores of segmentation; Be outside equipped with at cable core and tighten layer (3); Described fan-shaped insulated wire cores by round conductor (1), be extruded in round conductor (1) fan-shaped insulating barrier (2) outward and form.
2. flame resistant cable according to claim 1, is characterized in that: described tightening outside layer (3) is coated with flame-retardant coating.
3. flame resistant cable according to claim 1, is characterized in that: described round conductor (1) is for pressing circular molded line conductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410690012.1A CN104409149A (en) | 2014-11-27 | 2014-11-27 | Flame-retardant and refractory cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410690012.1A CN104409149A (en) | 2014-11-27 | 2014-11-27 | Flame-retardant and refractory cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104409149A true CN104409149A (en) | 2015-03-11 |
Family
ID=52646769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410690012.1A Pending CN104409149A (en) | 2014-11-27 | 2014-11-27 | Flame-retardant and refractory cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104409149A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201194178Y (en) * | 2007-09-12 | 2009-02-11 | 上海亚龙工业（集团）有限公司 | Power cable for nuclear island of third generation nuclear plant |
| CN201289759Y (en) * | 2008-11-14 | 2009-08-12 | 东营市华东线缆集团有限公司 | Packaged cable for environment protection type composite conductor |
| CN201302846Y (en) * | 2008-10-17 | 2009-09-02 | 浙江华晨电缆有限公司 | Metallic sheath flexible fireproof cable |
| CN203659455U (en) * | 2013-10-24 | 2014-06-18 | 江苏江扬电缆有限公司 | 125 DEG C resistant irradiation-free silane crosslinking halogen-free low-smoke flame retardation electric cable |
| CN203787200U (en) * | 2014-04-15 | 2014-08-20 | 河北华通线缆集团有限公司 | Fan-shaped conductor copper braid shielding flexible cable |
| CN203882703U (en) * | 2014-06-10 | 2014-10-15 | 陈杏芬 | Halogen-free cable in photovoltaic system |
| CN203882686U (en) * | 2014-03-22 | 2014-10-15 | 安徽旺达铜业发展有限公司 | High-temperature resistance isolation cable having framework lining |
-
2014
- 2014-11-27 CN CN201410690012.1A patent/CN104409149A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201194178Y (en) * | 2007-09-12 | 2009-02-11 | 上海亚龙工业（集团）有限公司 | Power cable for nuclear island of third generation nuclear plant |
| CN201302846Y (en) * | 2008-10-17 | 2009-09-02 | 浙江华晨电缆有限公司 | Metallic sheath flexible fireproof cable |
| CN201289759Y (en) * | 2008-11-14 | 2009-08-12 | 东营市华东线缆集团有限公司 | Packaged cable for environment protection type composite conductor |
| CN203659455U (en) * | 2013-10-24 | 2014-06-18 | 江苏江扬电缆有限公司 | 125 DEG C resistant irradiation-free silane crosslinking halogen-free low-smoke flame retardation electric cable |
| CN203882686U (en) * | 2014-03-22 | 2014-10-15 | 安徽旺达铜业发展有限公司 | High-temperature resistance isolation cable having framework lining |
| CN203787200U (en) * | 2014-04-15 | 2014-08-20 | 河北华通线缆集团有限公司 | Fan-shaped conductor copper braid shielding flexible cable |
| CN203882703U (en) * | 2014-06-10 | 2014-10-15 | 陈杏芬 | Halogen-free cable in photovoltaic system |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150311 |