CN203689958U - Fire resistant sheath shielding flexible cable - Google Patents
Fire resistant sheath shielding flexible cable Download PDFInfo
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- CN203689958U CN203689958U CN201320876861.7U CN201320876861U CN203689958U CN 203689958 U CN203689958 U CN 203689958U CN 201320876861 U CN201320876861 U CN 201320876861U CN 203689958 U CN203689958 U CN 203689958U
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- flame retardant
- cable
- fire
- flexible cable
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Abstract
The utility model provides a fire resistant sheath shielding flexible cable, and aims to solve the problems that a conventional fire resistant cable is short in available power supply time and cannot meet the rescue demand. The fire resistant sheath shielding flexible cable, from inside to outside, sequentially includes: an inner cable cluster which is located in the center, a high flame retardant material layer, a high flame retardant belt, a metal armored sheath, and a thermal shrinkage type low smoke halogen-free polyolefin flame retardant sheath; the inner cable cluster consists of at least two inner cables twisted together; each of the inner cable includes a copper wire in the center of the inner cable; the outside of the copper wire adopts a double-faced glass fiber flogopite belt multi-layer winding structure, and then is extruded to form a thermal shrinkage type halogen-free low smoke polyolefin flame retardant insulating layer; and the copper wire comprises at least two twisted filaments. The fire resistant sheath shielding flexible cable can be applied to the power supply, control, video and signal transmission and other fields; and when the fire resistant sheath shielding flexible cable is used in the combustion environment, the fire resistant sheath shielding flexible cable under the strict test can maintain the powering-on time for as long as 180 to 300 minutes, so that the golden rescue time for the fire rescue is greatly extended.
Description
[technical field]
The utility model relates to cable, especially a kind of fire-resistant sheath shielded flexible cable.
[background technology]
Wires and cables industry is the second largest industry that China is only second to automobile industry, and product variety meets rate and domestic market occupation rate all exceedes 90%.Worldwide, the Chinese electric wire gross output value has exceeded the U.S., becomes first electric wire producing country in the world.China's economic growth continuously and healthily, for cable products provides the huge market space, the temptation that Chinese market is strong, makes the world all sight be focused on to Chinese market, reforming and opening up to the outside world short decades, the huge production capacity that Chinese cable manufacturing industry forms allows the world regard with special esteem.Along with the continuous expansion of the industry sizes such as China Power industry, data communication industry, urban track traffic industry, car industry and shipbuilding, also will increase rapidly the demand of electric wire, following electric wire industry also has huge development potentiality.
Existing common fire-resisting cable is applied to technology-intensive type place, personnel concentrate, when accident, easily cause the public place of the dead group's wound of group, high-rise, public place of entertainment numerous high-quality and have the construction project of high safety hidden danger in the time that fire condition occurs in one's power, the power supply of common fire-resisting cable to rescue time through test and practical application is the longest only has 40-90 minute, do not reach the needed power supply of field rescue far away, the gold rescue time of signal transmission, so can cause suffeing heavy losses, the event of the dead group's wound of group occurs repeatedly, bring immeasurable loss to country and individual life and property.
[summary of the invention]
The utility model provides a kind of fire-resistant sheath shielded flexible cable, shorter in order to solve existing fire-resisting cable available power-on time under fire condition, can not meet the problem of rescue demand.
The fire-resistant sheath shielded flexible cable of one of the present utility model, comprises from inside to outside successively: be positioned at the cable bunch at center, high flame retardant material layer, high flame retardant band, metal armouring sheath, and thermal shrinkage type low-smoke halogen-free polyolefin fire retardant jacket; Wherein said interior cable bunch is at least made up of 2 mutual stranded interior cables; In described each, cable wrap is drawn together: the copper conductor of inside center, extrudes thermal shrinkage type low smoke, zero halogen polyolefin flame retardant insulation again in the outside double-sided glass fibers gold mica tape multi-lay winding structure that adopts of described copper conductor; Described copper conductor is by least 2 stranded forming of monofilament.
Wherein, described high flame retardant material layer is filled in the gap of interior cable bunch.
Wherein, described high flame retardant band is wound in high flame retardant material layer outside.
Wherein, described metal armouring sheath adopts aluminum alloy strip to interlock continuously winding arrangement.
Fire-resistant sheath shielded flexible cable of the present utility model can be applicable to the fields such as power supply, control, video and signal transmission, and while use under burning situation, detect and reach more than 180-300 minute conduction time through strict experiment, for fire rescue scene extends gold rescue time greatly, the needs of fire protection equipment power supply not only can be provided, the transmission that more can ensure monitoring image and signal keeps unimpeded, has greatly extended the feedback of rescue site internal information, provides valuable information for shortening rescue time.
[accompanying drawing explanation]
Fig. 1 is the schematic cross-section of fire-resistant sheath shielded flexible cable in the utility model embodiment.
[embodiment]
Below take 5 mutual stranded interior cables as example, shown in Figure 1 being elaborated.
Fire-resistant sheath shielded flexible cable in the present embodiment, comprise successively from inside to outside: the cable bunch 1 that is positioned at center, high flame retardant material layer 2, high flame retardant band 3, metal armouring sheath 4, and thermal shrinkage type low-smoke halogen-free polyolefin fire retardant jacket 5, wherein in cable bunch 1 formed by 5 mutual stranded interior cables 10.After stranded completing, owing to twisting into one interior cable bunch 1 non-cylindrical, and there is gap, and adopt high flame retardant material layer 2 to be filled in to become in the gap of interior cable bunch 1 regular cylindrical, high flame retardant material layer 2 can adopt thermal shrinkage type low-smoke halogen-free polyolefin fire proofing.High flame retardant band 3 is wound in high flame retardant material layer 2 outsides, specifically can adopt multi-lay winding structure, high flame retardant band 3 can adopt double-sided glass fiber reinforcement type gold mica tape or other high flame retardant glass fiber tape.Metal armouring sheath 4 can adopt aluminum alloy strip to interlock continuously winding arrangement.In above-mentioned each, in cable 10, comprise again: the copper conductor 101 of inside center, extrude thermal shrinkage type low smoke, zero halogen polyolefin flame retardant insulation 103 in outside double-sided glass fiber (enhancement mode) the gold mica tape 102 multi-lay winding structures that adopt of copper conductor 101, copper conductor 101 wherein forms by least 2 monofilament 1011 are stranded again.
In specific implementation, the fire-resistant sheath shielded flexible cable of the present embodiment can be used as high flame retardant, high fireproof high-temperature resistant fire-fighting dedicated emergency signal transmission power supply flexible cable.Copper conductor 101 adopts T1R type electrician circular copper wire base to produce through cold-drawing process, quenching technology, and the density of its copper material and the surface area of conductor are all much bigger than real core copper bar, is pooled capital by the stranded technique of multifilament, and cable is relatively soft.Because mechanization is produced continuously, cable length can meet distribution length needs, without transition joint.The insulating material of cable can adopt double-sided glass fiber reinforcement type gold mica tape 102 multi-lay winding to extrude thermal shrinkage type low smoke, zero halogen polyolefin flame retardant insulation 103 again, multilayer technology is produced, can within 300 minutes under 1100 ℃ of flame combustions, 1KV voltage, not puncture, insulation resistance is not less than 1.0m Ω.In stranded technical process, again detect up to 10KV high pressure through high-frequency spark machine, thoroughly stop potential safety hazard.Filling high flame retardant (special) material layer 2 after stranded completing, secondly be wound around high flame retardant glass fiber tape 3, recycling 5052H24 type aluminum alloy strip adopts interlocking winding process production metal armouring sheath 4 continuously, finally extrudes high temperature heat-resistant miniature low-smoke halogen-free polyolefin sheath 5.Both guaranteed security performance, shielding properties, antiseptic property, the humidity resistance of cable grounding, interlocking winding process has again very high bending property, be more suitable for long distance power supply and signal transmission, and construction and installation is very convenient, simple.
The requirement of experiment that traditional copper core polyvinyl chloride-insulated polyvinyl chloride shields fire-resistant cord does not puncture for 90 minutes under 1100 ℃ of flame combustions, 300V voltage.And fire-resistant sheath shielded flexible cable of the present utility model the experiment proved that, can within 300 minutes under 1100 ℃ of flame combustions, 1KV voltage, not puncture.The polyvinylchloride that prior art is used is high attenuating material.And the thermal shrinkage type low smoke, zero halogen polyolefin flame retardant insulation material that the utility model uses is low attenuating material.
One, thermal shrinkage type low-smoke halogen-free polyolefin index of correlation:
1. wherein halogen pointer is: the value≤50PPM (according to rules PREN14582) of all halogens;
2. after burning, produce the content < 100PPM (according to rules EN5067-2-1) of hydrogen halide;
3. pH value >=4.3 (faintly acid) (according to rules EN-50267-2-2) after the rear hydrogen halide producing that burns is water-soluble, can not produce toxic black smoke (can produce a small amount of white smoke) when burning;
4. product sees through its light transmittance >=60% of Ray Of Light (according to rules EN-50268-2) after burning in closed container;
5. there is higher specific insulation: PVC electric wire is generally 1012～1015 Ω/cm3, and low smoke no-halogen wire is greater than 1016 Ω/cm3;
6. there is good high pressure resistant property: more than the general resistance to 10KV of PVC electric wire, and low smoke no-halogen wire is up to more than 15KV;
7.Pb < 90PPM, Cd, Cr6+, Hg, PBBs, PBDEs are all less than 5PPM.
Two, polyvinylchloride material character:
1. density 1380kg/m3;
2. (σ is 50-80MPa t), and tensile strength is larger than general PVC electric wire: general PVC electric wire tensile strength is greater than 1.05Kgf/mm2, and low smoke no-halogen wire tensile strength is greater than 1.2Kgf/mm2 for hot strength;
3. 212 ℃ of fusing points;
4. thermal conductivity (entering) 0.16W/m.K;
5. thermal coefficient of expansion (α) 810-5/K;
6. water absorption rate (ASTM) 0.04-0.4;
7. the maximum feature of polyvinyl chloride is fire-retardant, is therefore widely used in flame retardant application.But polyvinyl chloride can discharge hydrogen chloride and other toxic gases, for example dioxin in combustion process;
8. the burning of polyvinyl chloride is divided into two steps.The alkadienes that first goes out hydrogen chloride gas and contain two keys 240 ℃ of-340 ℃ of combustion decomposition, then the 400-470 ℃ of burning that carbon occurs.
In sum, the traditional fire-resistant strand of copper core polyvinyl chloride insulation shape cord itself has only been considered some parameters such as resistance, withstand voltage, ampacity, so, if consider according to equation for transmission line formula, these can not meet communicating requirement, low speed, short distance perhaps can, and when high speed, long line, multinode bus communication, be just difficult to competent.Product high flame retardant of the present utility model, resistance to elevated temperatures are superior, when burning, smoke intensity is very few, non-corrosiveness gas is overflowed, be widely used in nuclear power station, subway station, telephone exchange and computer controlling center, skyscraper building, hotel, TV and Radio Service, important military installations, oil platform etc., and personnel are more concentrated, the place that atmospheric density is low.While use in adverse circumstances place and breaking out of fire, between middle double-sided glass fiber reinforcement type gold mica tape 102 multi-lay winding of copper conductor 101 and metal armouring sheath 4, extrude again thermal shrinkage type low smoke, zero halogen polyolefin flame retardant insulation 103, multilayer technology is produced, in stranded technical process, again detect up to 10KV high pressure through high-frequency spark machine, thoroughly stop potential safety hazard.Filling high flame retardant (special) material layer 2 after stranded completing, secondly be wound around high flame retardant glass fiber tape 3, recycling 5052H24 type aluminum alloy strip adopts interlocking winding process production metal armouring sheath 4 continuously, finally extrudes high temperature heat-resistant miniature low-smoke halogen-free polyolefin sheath 5.Prove that through fire resistance test this series fire-fighting special sheath shielding of the present utility model fire-resisting flexible cable can not puncture for 300 minutes under 1100 ℃ of flame combustions, 1KV voltage.For fire rescue scene extends gold rescue time greatly, the needs of fire protection equipment power supply not only can be provided, the transmission that more can ensure monitoring image and signal keeps unimpeded, has greatly extended the feedback of rescue site internal information, provides valuable information for shortening rescue time.
Here description of the present utility model and application are all illustrative and schematic, are not to want scope of the present utility model to limit in the above-described embodiments.Here the distortion of disclosed embodiment and change is completely possible, and for those those of ordinary skill in the art, the various parts of the replacement of embodiment and equivalence are all known.Those skilled in the art are also noted that, in the situation that not departing from spirit of the present utility model or substantive characteristics, the utility model can be with other form, structure, layout, ratio, and realize with other assembly, material and parts, and in the situation that not departing from the utility model scope and spirit, can carry out other distortion and change to disclosed embodiment here.
Claims (4)
1. a fire-resistant sheath shielded flexible cable, is characterized in that, comprises successively from inside to outside: be positioned at the cable bunch at center, high flame retardant material layer, high flame retardant band, metal armouring sheath, and thermal shrinkage type low-smoke halogen-free polyolefin fire retardant jacket;
Wherein said interior cable bunch is at least made up of 2 mutual stranded interior cables; In described each, cable wrap is drawn together: the copper conductor of inside center, extrudes thermal shrinkage type low smoke, zero halogen polyolefin flame retardant insulation again in the outside double-sided glass fibers gold mica tape multi-lay winding structure that adopts of described copper conductor; Described copper conductor is by least 2 stranded forming of monofilament.
2. fire-resistant sheath shielded flexible cable as claimed in claim 1, is characterized in that, described high flame retardant material layer is filled in the gap of interior cable bunch.
3. fire-resistant sheath shielded flexible cable as claimed in claim 2, is characterized in that, described high flame retardant band is wound in high flame retardant material layer outside.
4. fire-resistant sheath shielded flexible cable as claimed in claim 1, is characterized in that, described metal armouring sheath adopts aluminum alloy strip to interlock continuously winding arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320876861.7U CN203689958U (en) | 2013-12-30 | 2013-12-30 | Fire resistant sheath shielding flexible cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320876861.7U CN203689958U (en) | 2013-12-30 | 2013-12-30 | Fire resistant sheath shielding flexible cable |
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| Publication Number | Publication Date |
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| CN203689958U true CN203689958U (en) | 2014-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320876861.7U Expired - Fee Related CN203689958U (en) | 2013-12-30 | 2013-12-30 | Fire resistant sheath shielding flexible cable |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105356200A (en) * | 2015-11-03 | 2016-02-24 | 摩腾科技（上海）有限公司 | Method for producing variable-pitch electrical slip ring of wind turbine |
| US9784935B2 (en) | 2015-11-30 | 2017-10-10 | Corning Optical Communicaitons LLC | Coextruded jacket for flame retardant fiber optic cables |
-
2013
- 2013-12-30 CN CN201320876861.7U patent/CN203689958U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105356200A (en) * | 2015-11-03 | 2016-02-24 | 摩腾科技（上海）有限公司 | Method for producing variable-pitch electrical slip ring of wind turbine |
| US9784935B2 (en) | 2015-11-30 | 2017-10-10 | Corning Optical Communicaitons LLC | Coextruded jacket for flame retardant fiber optic cables |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20161230 |
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| CF01 | Termination of patent right due to non-payment of annual fee |