CN104240832B - A kind of fire-retardant fireproof cable - Google Patents
A kind of fire-retardant fireproof cable Download PDFInfo
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- CN104240832B CN104240832B CN201410499068.9A CN201410499068A CN104240832B CN 104240832 B CN104240832 B CN 104240832B CN 201410499068 A CN201410499068 A CN 201410499068A CN 104240832 B CN104240832 B CN 104240832B
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Abstract
The invention belongs to technical field of cables, especially relate to a kind of fire-retardant fireproof cable, it be coated on the inner sheath outside braid by two or four covered wires, the aluminium-plastic tape enveloped by covered wire, the braid being positioned at outside aluminium-plastic tape, extrusion molding, oversheath that the armor that is coated on outside inner sheath, extrusion molding are coated on outside armor is constituted；It is characterized in that described every covered wire by conductor, envelope the polyethylene layer of conductor, ceramic insulating barrier that extrusion molding is coated on outside polyethylene layer forms；Having a drain heart yearn outside covered wire, drain heart yearn and covered wire are enveloped by aluminium-plastic tape simultaneously.The present invention has following main beneficial effect: lower in cost, make more convenient, Production Time is shorter, fire-retardant fireproof performance more preferably, to be not susceptible to short circuit, cable control ability higher.
Description
Technical field
The invention belongs to technical field of cables, especially relate to a kind of fire-retardant fireproof cable.
Background technology
Fire-retardant fireproof cable is generally laid in Along Railway, connects equipment and machine room.In prior art, the structure of typical fire-retardant fireproof cable as it is shown in figure 1, it be the covered wire by parallel or stranded placement, the aluminum-plastic composite membrane 4 that covered wire is enveloped, the braiding copper cash 5 being positioned at outside aluminum-plastic composite membrane, extrusion molding is coated on braiding polyethylene inner sheath 6 copper cash outside, the double-deck galvanized steel strip 7 being coated on outside polyethylene inner sheath, extrusion molding is coated on the polyethylene outside bilayer galvanized steel strip or halogen-free and low-smoke flame-retardant polyolefin oversheath 8 is constituted；Covered wire is made up of copper conductor 1, the polyethylene layer 2 that envelopes copper conductor；Tinned wird 3 is positioned at outside covered wire and is coated with by aluminum-plastic composite membrane with covered wire simultaneously.Thunder and lightning or forceful electric power power transfer ratio are easier to cause stray electrical current；And railway mostly is strong electric propulsion, therefore stray electrical current is more, bigger, it is easy to causing and catch fire, burn, therefore, partial cables needs to be designed to flame retardant type；It addition, when cable is in machine room, also need to adopt fire proof construction.
In prior art, for transmitting the cable of electric power, except adopting LSOH anti-flaming sheath, winding mica tape on conductor is also adopted to do insulating barrier or adopt inorganic mineral to do insulating barrier；To signal of communication series products, mostly protecting on sheath, be generally adopted LSOH anti-flaming oversheath, for insulation, owing to the electric capacity of signal of communication class cable needs cable pair is less, therefore insulant is generally adopted polyethylene or polyethylene foamed.Owing to polyethylene heatproof is relatively low, once there is electric discharge burning, the high temperature of generation quickly can melt polyethylene layer, causes short circuit, driving is caused major safety risks.
Publication No. is that CN103903772A, name are called: a kind of fire-retardant fireproof cable, it is made up of insulated power core, proof copper-wire braided screen layer, steel-tape armouring layer and silicone rubber jacket, described insulated power core is from inside to outside to be extruded on three tinned copper wire stranded conductors successively by aluminium-plastic tape lapping layer and pe sheath to form, three tinned copper wire stranded conductors are arranged on carbon nano-fiber inner core, and insulated power core internal clearance is filled partially with flame resistant filler rope；Fire-retardant fireproof lapping layer extrudes three eradication edge power wire core and becomes cable core；It is provided with flame-retardant packed layer in described cable core internal clearance；Described cable core is from inside to outside extruded with proof copper-wire braided screen layer, steel-tape armouring layer and silicone rubber jacket successively.Its multi-layer fireproofing Principle And Method of Flame Retardation Design also can not solve the problems referred to above.
Publication No. is that CN203444840U, name are called: High-flame-retardancfireproof fireproof cable, is orderly arranged outside each four floor height flame-retardant low-smoke halogen-free belting layers, copper strips and proof copper-wire braided double shield layer, thermostable fluorine plastics sheath and elastomer flame-retardant low-smoke halogen-free polyolefin sheath layer at cable core；Cable core includes four strand cores, and per share core includes oxygen-free copper bundle strand conductor respectively, twists conductor at oxygen-free copper bundle and is orderly arranged outside each four layers of refractory gold mica tape lapping layer and thermostable fluorine plastic insulating layer.It has fire-retardant and fireproof oxygen-separation physical property, and under the strong effect of outside burning things which may cause a fire disaster, cable surface will not prolong combustion, till the whole calcination carbonization of cable core peripheral material, the insulating barrier of cable conductor at all will not send out Jiao because being heated, and conductor still active load is operated, but cost is at a relatively high.
Summary of the invention
In order to solve the problems referred to above, it is an object of the invention to disclose a kind of fire-retardant fireproof cable, it realizes by the following technical solutions.
A kind of fire-retardant fireproof cable, it be coated on the inner sheath outside braid by two or four covered wires, the aluminium-plastic tape enveloped by covered wire, the braid being positioned at outside aluminium-plastic tape, extrusion molding, oversheath that the armor that is coated on outside inner sheath, extrusion molding are coated on outside armor is constituted；It is characterized in that described every covered wire by conductor, envelope the polyethylene layer of conductor, ceramic insulating barrier that extrusion molding is coated on outside polyethylene layer forms；Having a drain heart yearn outside covered wire, drain heart yearn and covered wire are enveloped by aluminium-plastic tape simultaneously.
A kind of fire-retardant fireproof cable described above, it is characterised in that described conductor is 1 class copper conductor or 1 class aluminium conductor, and the sectional area of conductor is 1mm2And 1.5mm2。
A kind of fire-retardant fireproof cable described above, it is characterised in that the thickness of described polyethylene layer is 0.5mm～0.8mm.
A kind of fire-retardant fireproof cable described above, it is characterised in that the thickness of described ceramic insulating barrier is 0.2mm～0.4mm.
A kind of fire-retardant fireproof cable described above, it is characterised in that the material of described ceramic insulating barrier is Chinese patent notification number is the ceramic CABLE MATERIALS in CN103865166A or Chinese patent publication No. CN103928157A；Or count by weight, the material being made up of following raw material and content: ethylene-alpha propylene copolymer: 100 parts, fineness be the white mica of below 100 orders: 150～250 parts, fineness is less than the silicon dioxide of 300 orders: 50～80 parts, Tissuemat E: 1～3 part, polyethylene: 100～200 parts, antioxidant 1010: 0.3～0.8 part, carbon black: 30～50 parts.
A kind of fire-retardant fireproof cable described above, it is characterized in that described aluminium-plastic tape is one side film, the thickness of aluminium-plastic tape is 0.15mm～0.25mm, aluminium-plastic tape is that spiral winding wraps in drain heart yearn and covered wire outside, and the aluminum face of aluminium-plastic tape is near drain heart yearn and covered wire.
A kind of fire-retardant fireproof cable described above, it is characterised in that described braid is that 0.1mm～0.15mm copper wire woven forms by diameter, braiding copper cash is the copper cash that bare copper wire or outside have tin coating, and count is 60%～85%.
A kind of fire-retardant fireproof cable described above, it is characterised in that described drain heart yearn is formed by 7 tinned copper wires are stranded, and the diameter of intertwist body is 0.2mm；Or described drain heart yearn is formed by 7 tin plating aluminium wires are stranded, and the diameter of intertwist body is 0.2mm.
A kind of fire-retardant fireproof cable described above, it is characterised in that the material of described inner sheath is polyethylene or LSOH anti-flaming polyethylene, and the thickness of inner sheath is 0.8mm～1.2mm.
A kind of fire-retardant fireproof cable described above, it is characterised in that described armor is double side zinc coating steel band；Galvanized steel strip thickness is 0.2mm or 0.3mm or 0.5mm；Galvanized steel strip is that spiral winding handbag overlays on outside inner sheath；Between adjacent galvanized steel strip, there is gap.
A kind of fire-retardant fireproof cable described above, it is characterised in that the material of described oversheath is polyethylene or low-smoke non-halogen flame-retardant polyethylene；Oversheath thickness is 1.4mm～2.0mm.
Present invention extrusion molding outside polyethylene layer is coated with special ceramic insulating layer material, while maintaining the performance of polyethylene layer low-k, once breaking out of fire, ceramic shell one layer very hard is become after ceramic material combustion, the short trouble that can prevent conductor from touching mutually and to cause, it is ensured that the safety of driving.Owing to ceramic insulating layer material cost is not high, extrusion performance is reliable and stable, easy to operate, can at common extrusion hands-operation.Ceramic insulating layer material in the present invention can adopt commercially available prod, it would however also be possible to employ notification number is: CN103865166A, name are called: low smoke and zero halogen ceramic cable material of polyolefin and preparation method thereof；Or publication No.: CN103928157A, name are called: thermoplasticity ceramic low-smoke halogen-free polyolefin low-voltage insulation fire-resisting cable；Ceramic CABLE MATERIALS in two patents, these two patents are the applications of our company.
Therefore, the present invention has following main beneficial effect: lower in cost, make more convenient, Production Time is shorter, fire-retardant fireproof performance more preferably, to be not susceptible to short circuit, cable control ability higher.
Accompanying drawing explanation
Fig. 1 is the cross-sectional structure schematic diagram of prior art.
Fig. 2 is the cross-sectional structure schematic diagram of the invention process example 1.
Fig. 3 is the cross-sectional structure schematic diagram of the invention process example 2.
Fig. 4 is the cross-sectional structure schematic diagram of the invention process example 3.
Detailed description of the invention
Embodiment 1
Ask for an interview Fig. 2, a kind of fire-retardant fireproof cable, it be coated on the inner sheath 6 outside braid by two covered wires, the aluminium-plastic tape 4 enveloped by covered wire, the braid 5 being positioned at outside aluminium-plastic tape, extrusion molding, oversheath 8 that the armor 7 that is coated on outside inner sheath, extrusion molding are coated on outside armor is constituted；It is characterized in that described every covered wire by conductor 1, envelope the polyethylene layer 2 of conductor, ceramic insulating barrier 21 that extrusion molding is coated on outside polyethylene layer forms；Having a drain heart yearn 3 outside covered wire, drain heart yearn and covered wire are enveloped by aluminium-plastic tape simultaneously；Two covered wires are a pair, are parallel placement or mutual stranded rear placement.
Embodiment 2
Ask for an interview Fig. 3, a kind of fire-retardant fireproof cable, it be coated on the inner sheath 6 outside braid by four covered wires, the aluminium-plastic tape 4 enveloped by covered wire, the braid 5 being positioned at outside aluminium-plastic tape, extrusion molding, oversheath 8 that the armor 7 that is coated on outside inner sheath, extrusion molding are coated on outside armor is constituted；It is characterized in that described every covered wire by conductor 1, envelope the polyethylene layer 2 of conductor, ceramic insulating barrier 21 that extrusion molding is coated on outside polyethylene layer forms；Having a drain heart yearn 3 outside covered wire, drain heart yearn and covered wire are enveloped by aluminium-plastic tape simultaneously；Four covered wires are two pairs, and drain heart yearn is arranged in the external series gap that four eradication edge lines are formed.
Embodiment 3
Ask for an interview Fig. 4, a kind of fire-retardant fireproof cable, it be coated on the inner sheath 6 outside braid by four covered wires, the aluminium-plastic tape 4 enveloped by covered wire, the braid 5 being positioned at outside aluminium-plastic tape, extrusion molding, oversheath 8 that the armor 7 that is coated on outside inner sheath, extrusion molding are coated on outside armor is constituted；It is characterized in that described every covered wire by conductor 1, envelope the polyethylene layer 2 of conductor, ceramic insulating barrier 21 that extrusion molding is coated on outside polyethylene layer forms；Having a drain heart yearn 3 outside covered wire, drain heart yearn and covered wire are enveloped by aluminium-plastic tape simultaneously；Four covered wires are two pairs, and drain heart yearn is arranged in the internal clearance that four eradication edge lines are formed.
A kind of fire-retardant fireproof cable described in any of the above-described embodiment, it is characterised in that described conductor is 1 class copper conductor or 1 class aluminium conductor, and the sectional area of conductor is 1mm2And 1.5mm2。
A kind of fire-retardant fireproof cable described in any of the above-described embodiment, it is characterised in that the thickness of described polyethylene layer is 0.5mm～0.8mm.
A kind of fire-retardant fireproof cable described in any of the above-described embodiment, it is characterised in that the thickness of described ceramic insulating barrier is 0.2mm～0.4mm.
A kind of fire-retardant fireproof cable described in any of the above-described embodiment, it is characterized in that the material of described ceramic insulating barrier is counted by weight, be made up of following raw material and content: ethylene-alpha propylene copolymer: 100 parts, fineness be the white mica of below 100 orders: 150～250 parts, fineness is less than the silicon dioxide of 300 orders: 50～80 parts, Tissuemat E: 1～3 part, polyethylene: 100～200 parts, antioxidant 1010: 0.3～0.8 part, carbon black: 30～50 parts.
Preferably, the material of ceramic insulating barrier described above is counted by weight, is made up of following raw material and content: ethylene-alpha propylene copolymer: 100 parts, fineness be the white mica of below 100 orders: 200 parts, fineness is less than the silicon dioxide of 300 orders: 70 parts, Tissuemat E: 2 parts, polyethylene: 150 parts, antioxidant 1010: 0.5 part, carbon black: 40 parts.
Preferably, the material of ceramic insulating barrier described above is counted by weight, is made up of following raw material and content: ethylene-alpha propylene copolymer: 100 parts, fineness be the white mica of below 100 orders: 150 parts, fineness is less than the silicon dioxide of 300 orders: 50 parts, Tissuemat E: 1 part, polyethylene: 100 parts, antioxidant 1010: 0.3 part, carbon black: 30 parts.
Preferably, the material of ceramic insulating barrier described above is counted by weight, is made up of following raw material and content: ethylene-alpha propylene copolymer: 100 parts, fineness be the white mica of below 100 orders: 250 parts, fineness is less than the silicon dioxide of 300 orders: 80 parts, Tissuemat E: 3 parts, polyethylene: 200 parts, antioxidant 1010: 0.8 part, carbon black: 50 parts.
A kind of fire-retardant fireproof cable described in any of the above-described embodiment, it is characterized in that described aluminium-plastic tape is one side film, the thickness of aluminium-plastic tape is 0.15mm～0.25mm, aluminium-plastic tape is that spiral winding wraps in drain heart yearn and covered wire outside, and the aluminum face of aluminium-plastic tape is near drain heart yearn and covered wire.
A kind of fire-retardant fireproof cable described in any of the above-described embodiment, it is characterised in that described braid is that 0.1mm～0.15mm copper wire woven forms by diameter, braiding copper cash is the copper cash that bare copper wire or outside have tin coating, and count is 60%～85%.
A kind of fire-retardant fireproof cable described in any of the above-described embodiment, it is characterised in that described drain heart yearn is formed by 7 tinned copper wires are stranded, and the diameter of intertwist body is 0.2mm；Or described drain heart yearn is formed by 7 tin plating aluminium wires are stranded, and the diameter of intertwist body is 0.2mm.
A kind of fire-retardant fireproof cable described in any of the above-described embodiment, it is characterised in that the material of described inner sheath is polyethylene or LSOH anti-flaming polyethylene, and the thickness of inner sheath is 0.8mm～1.2mm.
A kind of fire-retardant fireproof cable described in any of the above-described embodiment, it is characterised in that described armor is double side zinc coating steel band；Galvanized steel strip thickness is 0.2mm or 0.3mm or 0.5mm；Galvanized steel strip is that spiral winding handbag overlays on outside inner sheath；Between adjacent galvanized steel strip, there is gap.
A kind of fire-retardant fireproof cable described in any of the above-described embodiment, it is characterised in that the material of described oversheath is polyethylene or LSOH anti-flaming polyethylene；Oversheath thickness is 1.4mm～2.0mm.
Present invention extrusion molding outside polyethylene layer is coated with special ceramic insulating layer material, while maintaining the performance of polyethylene layer low-k, once breaking out of fire, ceramic shell one layer very hard is become after ceramic material combustion, the short trouble that can prevent conductor from touching mutually and to cause, it is ensured that the safety of driving.Owing to ceramic insulating layer material cost is not high, extrusion performance is reliable and stable, easy to operate, can at common extrusion hands-operation.Ceramic insulating layer material in the present invention can adopt commercially available prod, it would however also be possible to employ notification number is: CN103865166A, name are called: low smoke and zero halogen ceramic cable material of polyolefin and preparation method thereof；Or publication No.: CN103928157A, name are called: thermoplasticity ceramic low-smoke halogen-free polyolefin low-voltage insulation fire-resisting cable；Ceramic CABLE MATERIALS in two patents, these two patents are the applications of our company.
In the present invention, the material of the ceramic insulating barrier of invention, as follows through testing its numerical value: density: 0.98～1.15g/cm3；Melt flow rate (MFR) >=17g/10min；Draw intensity >=25MPa；Elongation at break >=180%.Therefore, having and process extrusion performance preferably, the compatibility with polyethylene is extremely strong, with the cohesive force >=5N of inner sheath.Adopt the ceramic insulating layer material of the present invention, after producing covered wire, carry out fire resistance test according to standard GB/T/T19216.21, tested by fire resistance.
Therefore, the present invention has following main beneficial effect: lower in cost, make more convenient, Production Time is shorter, fire-retardant fireproof performance more preferably, to be not susceptible to short circuit, cable control ability higher.
The present invention is not limited to above-mentioned preferred forms, it will be appreciated that the design of the present invention can be implemented to use by other various forms, and they also fall within protection scope of the present invention.
Claims (7)
1. a fire-retardant fireproof cable, it be coated on the inner sheath outside braid by four covered wires, the aluminium-plastic tape enveloped by covered wire, the braid being positioned at outside aluminium-plastic tape, extrusion molding, oversheath that the armor that is coated on outside inner sheath, extrusion molding are coated on outside armor is constituted；It is characterized in that described every covered wire by conductor, envelope the polyethylene layer of conductor, ceramic insulating barrier that extrusion molding is coated on outside polyethylene layer forms；Drain heart yearn is arranged in the internal clearance that four eradication edge lines are formed, and drain heart yearn and covered wire are enveloped by aluminium-plastic tape simultaneously；Described conductor is 1 class copper conductor or 1 class aluminium conductor, and the sectional area of conductor is 1mm2Or 1.5mm2；The thickness of described polyethylene layer is 0.5mm～0.8mm；The thickness of described ceramic insulating barrier is 0.2mm～0.4mm；Described ceramic insulating barrier is to count by weight, the material being made up of following raw material and content: ethylene-alpha propylene copolymer: 100 parts, fineness be the white mica of below 100 orders: 150～250 parts, fineness is less than the silicon dioxide of 300 orders: 50～80 parts, Tissuemat E: 1～3 part, polyethylene: 100～200 parts, antioxidant 1010: 0.3～0.8 part, carbon black: 30～50 parts.
2. a kind of fire-retardant fireproof cable according to claim 1, it is characterized in that described aluminium-plastic tape is one side film, the thickness of aluminium-plastic tape is 0.15mm～0.25mm, aluminium-plastic tape is that spiral winding wraps in drain heart yearn and covered wire outside, and the aluminum face of aluminium-plastic tape is near drain heart yearn and covered wire.
3. a kind of fire-retardant fireproof cable according to claim 2, it is characterised in that described braid is that 0.1mm～0.15mm copper wire woven forms by diameter, and braiding copper cash is the copper cash that bare copper wire or outside have tin coating, and count is 60%～85%.
4. a kind of fire-retardant fireproof cable according to claim 3, it is characterised in that described drain heart yearn is formed by 7 tinned copper wires are stranded, and the diameter of intertwist body is 0.2mm；Or described drain heart yearn is formed by 7 tin plating aluminium wires are stranded, and the diameter of intertwist body is 0.2mm.
5. a kind of fire-retardant fireproof cable according to claim 4, it is characterised in that the material of described inner sheath is polyethylene, and the thickness of inner sheath is 0.8mm～1.2mm.
6. a kind of fire-retardant fireproof cable according to claim 5, it is characterised in that described armor is double side zinc coating steel band；Galvanized steel strip thickness is 0.2mm or 0.3mm or 0.5mm；Galvanized steel strip is that spiral winding handbag overlays on outside inner sheath；Between adjacent galvanized steel strip, there is gap.
7. a kind of fire-retardant fireproof cable according to claim 6, it is characterised in that the material of described oversheath is polyethylene；Oversheath thickness is 1.4mm～2.0mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410499068.9A CN104240832B (en) | 2014-09-26 | 2014-09-26 | A kind of fire-retardant fireproof cable |
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| CN201410499068.9A CN104240832B (en) | 2014-09-26 | 2014-09-26 | A kind of fire-retardant fireproof cable |
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| CN104240832A CN104240832A (en) | 2014-12-24 |
| CN104240832B true CN104240832B (en) | 2016-07-13 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105023631A (en) * | 2015-01-14 | 2015-11-04 | 四川正方高压线缆有限公司 | Stainless steel mineral-insulated cable |
| CN105989914B (en) * | 2015-02-05 | 2018-10-30 | 上海朗达电缆（集团）有限公司 | A kind of environment-friendly type flexible fire-proof cable |
| CN105551631A (en) * | 2016-02-03 | 2016-05-04 | 安徽瑞昊缆业有限公司 | Multi-core industrial cable |
| CN112037988B (en) * | 2020-08-25 | 2022-03-15 | 江西省越光电缆股份有限公司 | Heat-resistant flame-retardant insulated cable |
| CN112037987B (en) * | 2020-08-25 | 2022-04-12 | 江西省越光电缆股份有限公司 | Heat-resistant flame-retardant high-insulation cable |
| CN117603518B (en) * | 2023-11-29 | 2024-05-28 | 湖南湘联电缆有限公司 | Fireproof flame-retardant cable |
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Address after: 215542 Jiangsu city of Suzhou province Changshou City Shajiabang town southeast of Changshu Development Zone, No. 8 Chang kunlu Patentee after: Jiangsu Zhongli group Limited by Share Ltd Address before: 215542 Jiangsu city of Suzhou province Changshou City Shajiabang town southeast of Changshu Development Zone, No. 8 Chang kunlu Patentee before: Zhongli Science & Technology Group Co., Ltd. |