CN208400602U - Fire-resisting cable is pressed in a kind of high fire-retardance minerals refuge floor - Google Patents

Fire-resisting cable is pressed in a kind of high fire-retardance minerals refuge floor Download PDF

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Publication number
CN208400602U
CN208400602U CN201820316546.1U CN201820316546U CN208400602U CN 208400602 U CN208400602 U CN 208400602U CN 201820316546 U CN201820316546 U CN 201820316546U CN 208400602 U CN208400602 U CN 208400602U
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fire
minerals
insulation
low
refuge floor
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CN201820316546.1U
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Inventor
于海鹏
于廷忠
李云海
宫家亮
姜楠
刘远峰
徐茂华
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Dalian Pop Cable Group Co Ltd
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Dalian Pop Cable Group Co Ltd
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Abstract

The utility model provides in a kind of high fire-retardance minerals refuge floor and presses fire-resisting cable, including a plurality of insulated core;The insulated wire cores include anaerobic copper conductor, outside the anaerobic copper conductor, the three-layer co-extruded conductor shielding of from-inner-to-outer, insulation, insulation shielding, and wrapped metal screen layer outside the insulation screen;The insulated wire cores twisted synthesizing cable is filled with inflaming retarding high-temperature gasket for packing, wrapped first low-smoke non-halogen flame-retardant glass wool cloth band outside stranding insulated wire cores in stranding gap;Outside first low-smoke non-halogen flame-retardant glass wool cloth band, from-inner-to-outer is disposed with high oxygen index (OI) polyolefin cooling layer, minerals refuge floor, the second low-smoke non-halogen flame-retardant glass wool cloth band, low smoke halogen-free flame-retardant polyolefin inner sheath, the double-deck galvanized steel strip gear fire bed and oversheath.The middle pressure fire-resisting cable of such structure setting, anti-flammability is high, refractory ability is strong, simple production process, and manufacturing cost is lower, product wide market.

Description

Fire-resisting cable is pressed in a kind of high fire-retardance minerals refuge floor
Technical field
The utility model relates to press fire-resisting cable in cable technology more particularly to a kind of high fire-retardance minerals refuge floor
Background technique
Flame retardant cable, extensive interpretation are that cable has in the case where fire occurs, and prevent flame combustion and prevent flame Along the ability of own propagation diffusion.
Fire-resisting cable, extensive interpretation are that cable has in the case where fire occurs, within a certain period of time, still can be steady Fixed operation, provides the ability of electric energy delivering path for fire-fighting emergent system.
As environmental consciousness, awareness of safety is gradually increased in people, for wire and cable characteristic requirements also continuous It improves, midium voltage cable even more plays a crucial role in power grid distribution as the backbone of power transmission.Exist at present During the place of densely populated place is designed with line, it will usually it is required that midium voltage cable has low smoke and zero halogen, fire-retardant, fire resisting characteristic, compare Compared with for, having the midium voltage cable of such requirement currently on the market, structure is sufficiently complex, and cost is high, so, middle pressure fire resisting The exploitation of cable designs, and while researching and developing along with new material, still has compared with much progress space.
Utility model content
The purpose of this utility model is that design and manufacture it is a kind of have low smoke and zero halogen, it is fire-retardant, refractory ability it is high-quality in Fire-resisting cable is pressed, while cooperating total structure design, with appropriate material application, it is fire-retardant, resistance to promote midium voltage cable at this stage Fiery ability reduces production cost, improves social benefit.
It is pressed in a kind of in order to achieve the above purposes, the technical solution adopted by the utility model is: high fire-retardance minerals refuge floor Fire-resisting cable, including a plurality of insulated core;The insulated wire cores include anaerobic copper conductor, outside the anaerobic copper conductor, from interior and Outer to constitute wire body insulated wire cores using the three-layer co-extruded conductor shielding of CCV stretched wire production line, insulation, insulation shielding, the insulation is shielded Cover wrapped metal screen layer (around-packing technology being overlapped using copper strips, be each wrapped metal screen layer of phase insulated wire cores) outside layer;
The insulated wire cores twisted synthesizing cable, filled with inflaming retarding high-temperature gasket for packing, (i.e. cabling process is using resistance in stranding gap Fire high temperature packing rope and fill rounding), wrapped first low-smoke non-halogen flame-retardant glass wool cloth band outside stranding insulated wire cores;First low cigarette without Outside halogen fireproof glass silk strap, from-inner-to-outer is disposed with high oxygen index (OI) polyolefin cooling layer, minerals refuge floor, second low Cigarette halogen-free flameproof glass silk strap, low smoke halogen-free flame-retardant polyolefin inner sheath, the double-deck galvanized steel strip gear fire bed and oversheath.
Further, the conductor that the anaerobic copper conductor stranded copper wire is twisted, the copper wire are greater than for purity 99.98% red copper.
Further, the conductor shielding, insulation, insulation shielding are handed over using three layers of CCV catenary suspension type continuous vulcanization production line total production Connection process is peroxide crosslinking, and production process uses online derivometer monitored over time, strict control insulation eccentricity degree.It is described to lead Body is shielding for screen material in peelable type semiconductive, insulation is peroxide crosslinked polyethylene Insulation Material, insulation shielding is semiconductive External screen material.
Further, the metal screen layer is oxygen-free copper stripe.The oxygen-free copper stripe uses anaerobic copper belt single overlays Wrapped, average Duplication is not less than the 15% of bandwidth, and minimum overlay rate is not less than bandwidth 5%, guarantees copper strips continuity, i.e. mode High Level AC Voltage is interfered caused by outside plant and signal, while can also effectively carry certain short circuit current, it is ensured that is used Electrical system safety.
Further, the inflaming retarding high-temperature gasket for packing, without harmful substances such as glass, asbestos, halogens, oxygen index (OI) is high, resistance Combustion property is strong, and moisture content is low, can effectively ensure that in the case of contacting for a long time with shielded layer copper strips, copper strips does not aoxidize.
Further, the cooling layer is low-smoke halogen-free flame-resistant polyolefin oxygen barrier material, and oxygen index (OI) is greater than 40.It is fiery when meeting When burning, which will be precipitated moisture to reduce environment temperature, and forms one and do not melt non-ignitable aluminium oxide hard shell, to completely cut off cable Core is contacted with extraneous air, the cable of burning by self-extinguish, the fire-retardant rank for improving cable simultaneously, play cooling every The effect of fire.
Further, the minerals refuge floor is with AL (OH)3For the inorganic mineral fire-proof mud of major ingredient, it is added with several Inorganic fire-retarded object and bonding agent stir, and gunk is made, and by Bitruder cold-extruded in cooling layer surface, extrude completion Afterwards, external to be tightened using LSOH anti-flaming glass wool cloth band is wrapped, the minerals refuge floor extruded have it is stronger it is heat-insulated, Fire resisting function, after by flame calcination, overall structure will form fine and close honeycombed stiff shell, not drip, do not fall off, can be with Firm for internal structure plays powerful support.
Further, the gear fire bed is the double-deck galvanized steel strip.
Further, the oversheath is cracking resistance low smoke halogen-free flame-retardant polyolefin.
Press fire-resisting cable simple and reasonable for structure, compact in a kind of high fire-retardance minerals refuge floor of the utility model, and it is existing Technology, which compares, to be had the advantage that
(1) refractory ability is high, and pressure fire-resisting cable uses three one in a kind of high fire-retardance minerals refuge floor of the utility model Body fire protection flame retarding structure design, using LSOH anti-flaming glass wool cloth band, low-smoke non-halogen flame-retardant oxygen barrier layer, inorganic mineral mud every The material property of fire bed three-decker is comprehensive, keeps off fire bed in combination with its outer layer steel belt, largely improves refractory ability.
(2) flame retardant property is strong, and the fire protection flame retarding of fire-resisting cable is pressed in a kind of high fire-retardance minerals refuge floor of the utility model Layer structure is all made of hyperoxia index material, on the basis of cable has stronger refractory ability, promotes the fire-retardant self-extinguishment energy of cable Power.Ensure cable in flame calcination, cable itself is not as flame propagation body.
(3) production cost is low, high production efficiency, presses fire-resisting cable to compare in routine more in the market, the utility model fire insulation Layer uses new material inorganic mineral mud, and more preferably, after by flame calcination, refuge floor crusts speed faster to such material fire protecting performance, More preferably firm, production efficiency is fast, is not required to post-cure, at the same material cost be Ceramic silicon rubber, ceramic composite band 1/ 5, it may make middle pressure fire-resisting cable manufacturing cost to reduce, it is good in economic efficiency.
(4) environmentally protective.The material for pressing fire-resisting cable to use in a kind of high fire-retardance minerals refuge floor of the utility model is equal Belong to nontoxic, low smoke halogen-free material, it is ensured that the environmental protection characteristic of cable.
To sum up, press fire-resisting cable environmentally protective in a kind of high fire-retardance minerals refuge floor of the utility model, burning does not generate Harmful halogen gas, weighted value >=4.3 Halogen performance pH of cable, conductivity weighted value≤10 μ S/mm, the minimum of low cigarette characteristic Light transmittance >=60%, electric property is superior, fire resistance can realize that 950 DEG C/90min (requires experiment in existing national standard GB/T19666 Temperature is 750 DEG C/90min), can be burnt the fire-retardant experiment of A class by bunchy, and carbonization height is low, while cable uses the Trinity Fire protection flame retarding fit structure so that the fire retardancy of cable has larger promotion, be it is a kind of it is ideal be laid in personnel compared with For intensive place or the safety-type medium-pressure power cable of building.
Detailed description of the invention
Fig. 1 is that fire-resisting cable schematic cross-section is pressed in a kind of high fire-retardance minerals refuge floor of the utility model.
Specific embodiment
The present invention will be further described with reference to embodiments:
Embodiment 1
Fig. 1 is that fire-resisting cable schematic cross-section is pressed in a kind of high fire-retardance minerals refuge floor of the utility model.
Present embodiment discloses fire-resisting cable is pressed in a kind of high fire-retardance minerals refuge floor, as shown in Figure 1, including oxygen-free copper Conductor 1, anaerobic copper conductor 1 are the conductor that stranded copper wire is twisted, and copper wire is the red copper that purity is greater than 99.98%.
It is three-layer co-extruded outside anaerobic copper conductor 1, while squeezing out conductor shielding 2, insulation 3, insulation shielding 4, the conductor shielding Expect for screen in peelable type semiconductive, insulation is peroxide crosslinked polyethylene Insulation Material, insulation shielding is semiconductive external screen material. Three-layer co-extruded technique is once to produce completion using CCV catenary suspension type continuous vulcanization production line, and insulating layer is realized by peroxide crosslinking mode It is crosslinked, outside insulation shielding 4, wrapped metal screen layer 5 is overlapped using single layer copper strips.
Three have the insulated wire cores twisted synthesizing cable of metal screen layer, and stranding gap filling has inflaming retarding high-temperature gasket for packing 6, at Outside cable core, be surrounded with the first low-smoke non-halogen flame-retardant glass wool cloth belt 7, outer layer, using low smoke halogen-free flame-retardant polyolefin every Oxygen layer material extrudes cooling layer 8, and low-smoke halogen-free flame-resistant polyolefin oxygen barrier material of the cooling layer 8 using oxygen index (OI) greater than 40 squeezes Packet, when meeting fire burning, which will be precipitated moisture to reduce environment temperature, and form one not melt non-ignitable aluminium oxide hard Shell is contacted with completely cutting off cable core with extraneous air, and the cable of burning is same in the fire-retardant rank for improving cable by self-extinguish When, it plays the effect of cooling, outside the cooling layer 8, is provided with inorganic mineral refuge floor 9, the minerals refuge floor 9 extruded Has stronger heat-insulated, fire resisting function, after by flame calcination, overall structure will form fine and close honeycombed stiff shell, no Drip is not fallen off, and can play powerful support for the firm of internal structure.
9 outer layer of minerals refuge floor is respectively arranged with the second low-smoke non-halogen flame-retardant glass wool cloth band 10, low-smoke non-halogen flame-retardant Polyolefin inner sheath 11, the double-deck galvanized steel strip gear fire bed 12 and cracking resistance low smoke and zero halogen oversheath 13.
Press fire-resisting cable electric property superior in a kind of high fire-retardance minerals refuge floor provided in this embodiment, fire resistance Height, anti-flammability is strong, and low smoke, zero halogen is environmentally protective, and more existing middle pressure fire-resisting cable manufacturing cost reduces, is a kind of property It can stablize, the middle pressure fire-resisting cable of high performance-price ratio.
Cable itself is fire-retardant and fire resisting, effectively avoids electric wire as the flame propagation body under fire condition, and in a timing Interior is user's continued power, for the escape of the incident area Field Force of generation fire, strives for the more time, is user's person Safety and public property escort safely.
Experiments have shown that pressing fire-resisting cable in the present embodiment high fire-retardance minerals refuge floor, burning does not generate harmful halogen gas Body, weighted value >=4.3 Halogen performance pH of cable, conductivity weighted value≤10 μ S/mm, the minimum light transmittance of low cigarette characteristic >= 60%, electric property is superior, fire resistance can realize that 950 DEG C/90min (requires the experimental temperature to be in existing national standard GB/T19666 750 DEG C/90min), can by bunchy burn the fire-retardant experiment of A class, carbonization height it is low, while cable using the Trinity fire prevention resistance Fit structure is fired, is that a kind of ideal to be laid in personnel more intensive so that the fire retardancy of cable has larger promotion The safety-type medium-pressure power cable of place or building.
The utility model is not limited to the above embodiment in a kind of documented high fire-retardance minerals refuge floor and presses flame proof electrical Cable, wherein the change of oxygen-free copper conductor structure, the change of each thickness degree both are within the protection scope of the present invention.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited System;Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of Technical characteristic is equivalently replaced;And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new The range of each embodiment technical solution of type.

Claims (6)

1. pressing fire-resisting cable in a kind of high fire-retardance minerals refuge floor, which is characterized in that including a plurality of insulated core;The insulation Core includes anaerobic copper conductor, outside the anaerobic copper conductor, the three-layer co-extruded conductor shielding of from-inner-to-outer, insulation, insulation shielding, and institute State wrapped metal screen layer outside insulation screen;
The insulated wire cores twisted synthesizing cable, is filled with inflaming retarding high-temperature gasket for packing in stranding gap, wrapped the outside stranding insulated wire cores One low-smoke non-halogen flame-retardant glass wool cloth band;Outside first low-smoke non-halogen flame-retardant glass wool cloth band, from-inner-to-outer is disposed with hyperoxia Index polyolefin cool down layer, minerals refuge floor, the second low-smoke non-halogen flame-retardant glass wool cloth band, in low smoke halogen-free flame-retardant polyolefin Sheath, the double-deck galvanized steel strip gear fire bed and oversheath;
The minerals refuge floor is with AL (OH)3For the inorganic mineral fire-proof mud of major ingredient;
The conductor shielding is screen material in peelable type semiconductive, insulation is peroxide crosslinked polyethylene Insulation Material, insulation screen It covers for semiconductive external screen material.
2. pressing fire-resisting cable in high fire-retardance minerals refuge floor according to claim 1, which is characterized in that the oxygen-free copper is led Body is the conductor that stranded copper wire is twisted.
3. pressing fire-resisting cable in high fire-retardance minerals refuge floor according to claim 1, which is characterized in that the metallic shield Layer is oxygen-free copper stripe.
4. pressing fire-resisting cable in high fire-retardance minerals refuge floor according to claim 1, which is characterized in that the cooling layer is Low-smoke halogen-free flame-resistant polyolefin oxygen barrier material, oxygen index (OI) are greater than 40.
5. pressing fire-resisting cable in high fire-retardance minerals refuge floor according to claim 1, which is characterized in that the gear fire bed is The double-deck galvanized steel strip.
6. pressing fire-resisting cable in high fire-retardance minerals refuge floor according to claim 1, which is characterized in that the oversheath is Cracking resistance low smoke halogen-free flame-retardant polyolefin.
CN201820316546.1U 2018-03-08 2018-03-08 Fire-resisting cable is pressed in a kind of high fire-retardance minerals refuge floor Active CN208400602U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111627608A (en) * 2019-02-27 2020-09-04 云南多宝电缆集团股份有限公司 A-type flame-retardant fire-resistant medium-voltage cable and production method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111627608A (en) * 2019-02-27 2020-09-04 云南多宝电缆集团股份有限公司 A-type flame-retardant fire-resistant medium-voltage cable and production method thereof

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