CN204632358U - Novel concentric conductor flexible fire-proof cable - Google Patents
Novel concentric conductor flexible fire-proof cable Download PDFInfo
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- CN204632358U CN204632358U CN201520286846.6U CN201520286846U CN204632358U CN 204632358 U CN204632358 U CN 204632358U CN 201520286846 U CN201520286846 U CN 201520286846U CN 204632358 U CN204632358 U CN 204632358U
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- concentric conductor
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- fire
- flexible fire
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Abstract
Novel concentric conductor flexible fire-proof cable, belongs to power cable technical field.Comprise cable core and sheath, cable core forms by some insulated wire cores are stranded, and insulated wire cores is made up of conductor, fire insulation insulating barrier; it is characterized in that; fire insulation insulating barrier is composite double layer insulation system, is provided with fireproof jointing sheath outside cable core, is provided with concentric conductor layers outside fireproof jointing sheath.Under the utility model can act on while thermal-flame, mechanical shock, Water spray, still possess the ability of normal work within a very long time, can use as screen and ground connection core, economic environmental protection, can reduce the cost of cable simultaneously.
Description
Technical field
The utility model relates to a kind of structure of cable, and specifically a kind of structure of novel concentric conductor flexible fire-proof cable, belongs to field of cable technology.
Background technology
Along with the quickening of urbanization process, the building industry fast development of China, the safety of people and relevant industries and environmental consciousness are improving constantly, but fire incident still takes place frequently.Wherein, the fire electrically caused, from frequency or to cause damage be all " arch-criminal ", the fire wherein caused by cable and circuit accounts for over half.People notice the importance of choose reasonable cable more, not only will avoid the generation of fire, and ensure the continuity of line powering when must guarantee that fire occurs, and put out a fire, and loss dropped to minimum within the shortest time.
The change of economic growth structure, requires that our safety and environmental consciousness strengthen further, and Given this, fireproof cable has become an important directions of high-end cable products exploitation, and mineral protective layer fireproof cable arises at the historic moment.But the problems such as cost is high, the insulation moisture absorption, cable softness difference that traditional mineral protective layer fireproof cable still exists, especially operating voltage is lower, can only be applied to low-voltage power system.
Utility model content
The purpose of this utility model is for above-mentioned the deficiencies in the prior art, provides the novel concentric conductor flexible fire-proof cable that a kind of " insulation of composite double layer fire insulation type " and " fireproof jointing sheath " are formed.
The purpose of this utility model is achieved through the following technical solutions: novel concentric conductor flexible fire-proof cable, comprise cable core and sheath, described cable core forms by some insulated wire cores are stranded, described insulated wire cores by conductor, be placed in the outer field fire insulation insulating barrier of conductor and form, it is characterized in that, described fire insulation insulating barrier is composite double layer insulation system, by wrapped at the outer field three-in-one fluorophologopite band of conductor, be extruded in the outer field crosslinked polyetylene insulated layer of three-in-one fluorophologopite band and form;
Be provided with the fireproof jointing sheath that macromolecule composite ceramic coating polyolefine material is made outside cable core, outside fireproof jointing sheath, be provided with concentric conductor layers; Concentric conductor layers is made up of many annealing copper wire, copper strips, and many annealing copper wires are looped around outside fireproof jointing sheath equably, and copper strips is wrapped and tighten outside many annealing copper wires, and form an entirety with annealed copper silk, described sheath is placed in outside concentric conductor layers.
Described conductor by annealed copper wire, aluminum steel or annealed copper wire, aluminium alloy wire is stranded forms.
Described three-in-one fluorophologopite band is made up of layer glass cloth, the fluorophlogopite belt be placed in the middle of layer glass cloth.
Gasket for packing is provided with between the insulated wire cores gap in described cable core.
Flame retardant silica gel belting layer is provided with between described cable core and fireproof jointing sheath.
Flame retardant silica gel belting layer is provided with between described fireproof jointing sheath and concentric conductor layers.
Flame retardant silica gel belting layer is provided with between described concentric conductor layers and sheath.
Described sheath is made up of halogen-free and low-smoke flame-retardant polyolefin sheathed material.
Conductor adopts the annealed copper wire and the aluminum or aluminum alloy line that meet not plating or plating in GB/T 3956.Conductor shape is circular or special-shaped, when sectional area is more than 35mm
2time, can profile conductor be adopted, thus reduce the outside diameter of cable, save other raw material, significantly reduce cable cost.
Composite double layer fire insulation type insulation-fire insulation insulating barrier, adopts wrapped three-in-one fluorophologopite band to add the composite double layer insulation system extruding cross-linked polyethylene insulating material, makes cable have good fire protecting performance and ensures again the electric property that cable is excellent.
Three-in-one fluorophlogopite belt replaces hydroxyl with fluorine ion, obtains size and the better synthetic mica of crystal formation is main material, is attached in the middle of layer glass cloth.This mica tape is had, and the coefficient of expansion is little, dielectric strength is large, resistivity is high and outside the electrical property of dielectric constant even and excellent, especially thermal endurance class is high, can reach the fire-resistant level of A level (950 ~ 1000 DEG C).
The super clean insulating material that crosslinked polyethylene is a kind of flexibility, mechanical strength is high, electric property is good, has higher insulation resistance constant as insulating material, can bear higher electric pressure, ensures that cable has excellent insulating properties simultaneously.
Belting layer adopts flame retardant silica gel band, this band adopts synergistic effect, with dealcoholized type RTV silicon rubber for base glue, with melamine phosphate (MP) for self-expanding fire retardant, with magnesium hydroxide and aluminium hydroxide for synergistic fire retardant, and synthetic fibers mesh grid is adopted to be prepared from as supporting body.Under hot conditions, flame retardant silica gel band decomposites metal oxide and crystallization water, and the former is formed has adsorbing network structure to flue gas, and the latter can sedimentation soot and heat absorption; Simultaneously, silicon rubber also has excellent crust, burn time formed can low cigarette, fire-retardant and heat absorption carbonized structure, the burning rate not only slowing down cable itself and the time of sharply rising, also hinder the supply of oxygen and the flowing of fuel gas, improve structural stability and the impact resistance of cable under flame interaction.In conjunction with above-mentioned advantage, in the structural design of cable, with band by fireprotection layer " parcel ", the fire-retardant of cable and fire resistance are improved.
High crust, eutectics macromolecule composite ceramic coating polyolefine material is extruded as fireproofing of cable protective layer outside cable core; by built-in electrical insulation core and the external world completely isolated; form one deck continual " sealed vacuum " fire-proof curtain, insulate with composite double layer fire insulation type and form dual fail-safe of preventing fires.
Macromolecule composite ceramic coating polyolefin is as base material by the one in polyethylene, polypropylene or their copolymers, add special glass dust, mica filler, compatilizer mix, in order to the Ceramic silicon rubber material of alternative tradition fire prevention/fire-resisting cable use.This material can be ablated within the extremely short time, crust speed is fast, crust very hard, closely knit, can accomplish vertical from putting out, flame retardant rating can reach VW-1 level, under having flame, nonflame situation at 350 ~ 1600 DEG C, not melting, do not drip, do not come off, can not spot fire be caused, hard ceramic-like armour body can be burnt till, temperature is higher, ceramic-like armour body after time longer burning is harder, plays good flameproof effect.
Macromolecule composite ceramic coating polyolefine material prevents fires with tradition/the Ceramic silicon rubber material that adopts of fire-resisting cable compared with, insulated with material and excellent physical properties, price is low, processing technology is simple, in the reduction outside diameter of cable, manufacturing cost and while the production cycle, also improve production efficiency and the quality stability of cable.Adopt this material as fireproofing of cable layer, make new ceramics polyolefine material flexible fire-proof cable have higher value of the product.
Conventional flex mineral protective layer fireproof cable does not have metal coating Rotating fields, even if having also is that armour uses as mechanical protection.The fireproof cables such as BTTZ have metallic sheath structure, can use as ground connection core and screen simultaneously, but the short circuit current that metallic sheath can carry is limited, the thickness of the copper sheath that only changes could allocate suitable short circuit current, and the comparatively complicated and more difficult control of this process.The metallic sheath of the fireproof cables such as BTTZ directly contacts with air usually, the corrosion of air or other chemical substance may be subject to, accelerate the oxidation of copper sheath, the resistance of copper sheath is increased along with the increase of service life, cause the reduction of its carrying short circuit current.
The utility model carries out innovative design on traditional fireproof cable basis, concentric conductor Rotating fields is increased before sheath, many copper wires of annealing are adopted to be looped around outside cable core, outside it, wrapped one deck copper strips carries out tightening and forms an entirety with copper wire, form concentric conductor layers, can use as screen and ground connection core, processing technology is simple simultaneously, Modulatory character is strong, and tool has the following advantages:
1. freely can be allocated the size of cable carrying short circuit current by adjustment brass wire diameter and radical, programmable carrying short circuit current is larger;
2. concentric conductor layers has good shield effectiveness, makes cable have good Electro Magnetic Compatibility;
3. there is the protection of band and sheath in the outside of concentric conductor layers, does not directly contact with the external world, has higher useful life, indirectly adds the fail safe of electric power system.
The utility model adopts the halogen-free and low-smoke flame-retardant polyolefin sheathed material of high-quality, ensures cable low-smoke non-halogen flame-retardant performance.Protective cover material is by squeezing tubular type expressing technique, and the strict implement technical papers when producing, controls the thickness of sheath, the external diameter of cable, core shift degree and temperature well, while guarantee cable performance, also makes cable have good outward appearance.
During cable cabling, when conductor is circular or sectional area is larger, premised on the roundness ensureing cable, suitable gasket for packing or packing can be added between the gap of insulated wire cores.Packing is extruded by the modified polyolefine material with LSOH anti-flaming characteristic and is formed, can according to the large freedom in minor affairs design size in gap; Gasket for packing adopts non-moisture absorption Halogen without asbestos mineral inorganic paper rope material.
Traditional flame resistant filler rope all has certain moisture absorption, and the moisture after moisture absorption can corrode the insulating barrier of cable, reduces the electric property of cable.For head it off, this product is innovated technically, adopts non-moisture absorption Halogen without the gasket for packing of asbestos mineral inorganic paper rope as cable.The main component of this material is as follows: (1) base material is inorganic paper, is ground by inorganic ore, is crushed to; (2) new additive agent is adopted, in the fire retardant of traditional alkaline earth oxide and/or hydroxide, add acylate, make the ionic interaction between material, form thicker coating layer, suppress the diffusion of moisture, cause the solid matter preparation no longer moisture absorption of former easy former moisture absorption; (3) add mica powder, promote the anti-flammability of material further.Finally by above-mentioned all material twisting.Non-moisture absorption Halogen has non-hygroscopic, high flame retardant, intensity high without asbestos mineral inorganic paper rope.
The utility model is on traditional fireproof cable architecture basics, by increasing or change corresponding structure or material, design the novel concentric conductor ceramic polyolefine material flexible fire-proof cable of " insulation of composite double layer fire insulation type " and " fireproof jointing sheath " formation " fire prevention dual fail-safe ", under this product can act on while thermal-flame, mechanical shock, Water spray, within a very long time, still possesses the ability of normal work; Traditional fireproof cable basis is carried out technological innovation design concentric conductor layers, and this structure can use as screen and ground connection core simultaneously, and freely can allocate the size of carrying short circuit current by adjustment brass wire diameter and radical; Macromolecule composite ceramic coating polyolefin is adopted to substitute the Ceramic silicon rubber material of tradition fire prevention/fire-resisting cable use as fireproofing of cable layer, the economic environmental protection of this material, can reduce the cost of cable, the processing technology of this material is simple simultaneously, and batch production efficiency is higher, quality is more stable.
Accompanying drawing explanation
The structural representation that Fig. 1 is the utility model conductor when being abnormity;
The structural representation that Fig. 2 is the utility model conductor when being circle;
In figure: 1 conductor, 2 three-in-one fluorophologopite bands, 3 crosslinked polyetylene insulated layers, 4 fireproof jointing sheaths, 5 annealing copper wire, 6 copper strips, 7 sheaths, 8 gasket for packings, 9 flame retardant silica gel belting layers.
Embodiment
Novel concentric conductor flexible fire-proof cable, comprise cable core and sheath to state cable core and form by some insulated wire cores are stranded, insulated wire cores by conductor 1, be placed in the outer field fire insulation insulating barrier of conductor and form, conductor by annealed copper wire, aluminum steel or annealed copper wire, aluminium alloy wire is stranded forms.
Fire insulation insulating barrier is composite double layer insulation system, by wrapped at the outer field three-in-one fluorophologopite band 2 of conductor, be extruded in the outer field crosslinked polyetylene insulated layer 3 of three-in-one fluorophologopite band and form, three-in-one fluorophologopite band is made up of layer glass cloth, the fluorophlogopite belt be placed in the middle of layer glass cloth.
The fireproof jointing sheath 4 that macromolecule composite ceramic coating polyolefine material is made is provided with outside cable core; concentric conductor layers is provided with outside fireproof jointing sheath; concentric conductor layers is made up of many annealing copper wires 5, copper strips 6; many annealing copper wires are looped around outside fireproof jointing sheath equably; copper strips wrapped and tighten annealing copper wire outside, form an entirety with annealed copper silk.
Sheath 7 is made up of halogen-free and low-smoke flame-retardant polyolefin sheathed material, and is placed in outside concentric conductor layers.
During cable cabling, when conductor is circular or sectional area is larger, premised on the roundness ensureing cable, suitable gasket for packing or packing 8 can be added between the gap of insulated wire cores.
Flame retardant silica gel belting layer 9 is equipped with between cable core and fireproof jointing sheath, between fireproof jointing sheath and concentric conductor layers, between concentric conductor layers and sheath.
The utility model increases multilayer flexibility splendid fire-resistant, fire resistive construction compared with traditional cable, and the composition material of cable all selects halogen-free environmental shaped material, environmentally safe, meets the demand of Modern human populations to environmental consciousness.
The utility model adopts new material " macromolecule composite ceramic coating polyolefin " to substitute the Ceramic silicon rubber material of tradition fire prevention/fire-resisting cable use as fireproofing of cable layer, under ensureing that cable possesses the condition of same fire performance, reduce the outside diameter of cable, manufacturing cost and production cycle, enhance productivity.Meanwhile, fireprotection layer structure can form hard housing after meeting high-temp combustion, can play protection circuit not by the effect of stress damage, makes the ability still possessing normal work in a very long time of cable under the effect of flame.Cable increases concentric conductor Rotating fields, not only directly can use as ground connection core, carry larger short circuit current, can also use as screen, make cable have excellent Electro Magnetic Compatibility, and directly do not contact with the external world, there is longer useful life.
Claims (8)
1. a novel concentric conductor flexible fire-proof cable, comprise cable core and sheath, described cable core forms by some insulated wire cores are stranded, described insulated wire cores by conductor (1), be placed in the outer field fire insulation insulating barrier of conductor and form, it is characterized in that, described fire insulation insulating barrier is composite double layer insulation system, by wrapped the outer field three-in-one fluorophologopite band (2) of conductor, be extruded in the outer field crosslinked polyetylene insulated layer (3) of three-in-one fluorophologopite band and form;
Be provided with the fireproof jointing sheath (4) that macromolecule composite ceramic coating polyolefine material is made outside cable core, outside fireproof jointing sheath, be provided with concentric conductor layers; Concentric conductor layers is made up of many annealing copper wire (5), copper strips (6); many annealing copper wires are looped around outside fireproof jointing sheath equably; copper strips wrapped and tighten many annealing copper wires outside, form an entirety with annealed copper silk, described sheath (7) is placed in outside concentric conductor layers.
2. novel concentric conductor flexible fire-proof cable according to claim 1, is characterized in that, described conductor by annealed copper wire, aluminum steel or annealed copper wire, aluminium alloy wire is stranded forms.
3. novel concentric conductor flexible fire-proof cable according to claim 1, is characterized in that, described three-in-one fluorophologopite band is made up of layer glass cloth, the fluorophlogopite belt be placed in the middle of layer glass cloth.
4. novel concentric conductor flexible fire-proof cable according to claim 1, is characterized in that, is provided with gasket for packing (8) between the insulated wire cores gap in described cable core.
5. novel concentric conductor flexible fire-proof cable according to claim 1, is characterized in that, is provided with flame retardant silica gel belting layer (9) between described cable core and fireproof jointing sheath.
6. novel concentric conductor flexible fire-proof cable according to claim 1, is characterized in that, is provided with flame retardant silica gel belting layer (9) between described fireproof jointing sheath and concentric conductor layers.
7. novel concentric conductor flexible fire-proof cable according to claim 1, is characterized in that, is provided with flame retardant silica gel belting layer (9) between described concentric conductor layers and sheath.
8. novel concentric conductor flexible fire-proof cable according to claim 1, is characterized in that, described sheath (7) is made up of halogen-free and low-smoke flame-retardant polyolefin sheathed material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520286846.6U CN204632358U (en) | 2015-05-06 | 2015-05-06 | Novel concentric conductor flexible fire-proof cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520286846.6U CN204632358U (en) | 2015-05-06 | 2015-05-06 | Novel concentric conductor flexible fire-proof cable |
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| Publication Number | Publication Date |
|---|---|
| CN204632358U true CN204632358U (en) | 2015-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520286846.6U Expired - Fee Related CN204632358U (en) | 2015-05-06 | 2015-05-06 | Novel concentric conductor flexible fire-proof cable |
Country Status (1)
| Country | Link |
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| CN (1) | CN204632358U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106847385A (en) * | 2017-03-27 | 2017-06-13 | 湖北龙腾红旗电缆(集团)有限公司 | Skyscraper mineral insulated cable |
-
2015
- 2015-05-06 CN CN201520286846.6U patent/CN204632358U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106847385A (en) * | 2017-03-27 | 2017-06-13 | 湖北龙腾红旗电缆(集团)有限公司 | Skyscraper mineral insulated cable |
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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: 20150909 Termination date: 20210506 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |