CN220020694U - Flexible protective layer fireproof cable - Google Patents
Flexible protective layer fireproof cable Download PDFInfo
- Publication number
- CN220020694U CN220020694U CN202321673081.2U CN202321673081U CN220020694U CN 220020694 U CN220020694 U CN 220020694U CN 202321673081 U CN202321673081 U CN 202321673081U CN 220020694 U CN220020694 U CN 220020694U
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- CN
- China
- Prior art keywords
- layer
- cable
- fire
- outer side
- conductor
- Prior art date
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- 239000011241 protective layer Substances 0.000 title claims abstract description 16
- 239000010410 layer Substances 0.000 claims abstract description 93
- 239000004020 conductor Substances 0.000 claims abstract description 35
- 230000001681 protective effect Effects 0.000 claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 19
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 9
- 230000009970 fire resistant effect Effects 0.000 claims description 26
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- 230000017525 heat dissipation Effects 0.000 claims description 9
- 239000011819 refractory material Substances 0.000 claims description 8
- 230000000379 polymerizing effect Effects 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 16
- 238000009413 insulation Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 229910010272 inorganic material Inorganic materials 0.000 description 4
- 239000011147 inorganic material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000003063 flame retardant Substances 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005253 cladding Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000010445 mica Substances 0.000 description 2
- 229910052618 mica group Inorganic materials 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000017105 transposition Effects 0.000 description 2
- RJDOZRNNYVAULJ-UHFFFAOYSA-L [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[F-].[F-].[Mg++].[Mg++].[Mg++].[Al+3].[Si+4].[Si+4].[Si+4].[K+] Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[F-].[F-].[Mg++].[Mg++].[Mg++].[Al+3].[Si+4].[Si+4].[Si+4].[K+] RJDOZRNNYVAULJ-UHFFFAOYSA-L 0.000 description 1
- 238000002679 ablation Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000003733 fiber-reinforced composite Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
Abstract
The utility model relates to the field of cables, in particular to a fireproof cable with a flexible protective layer, which comprises a conductor and a protective sleeve wrapped on the outer side of the conductor, wherein an aluminum oxide base layer is arranged on the outer side of the conductor in a wrapping mode, the aluminum oxide base layer is wrapped on the outer side of the conductor in a multi-layer overlapping mode, an insulating wire core is formed, and a fireproof material layer is further arranged between the insulating wire core and the protective sleeve.
Description
Technical Field
The utility model relates to the field of cables, in particular to a fireproof cable with a flexible protective layer.
Background
With the rapid development of the fireproof cable market, various cable products with excellent performance and representativeness are applied to civil buildings, markets, subways, office buildings and other places, the low smoke and low toxicity, flame retardance and fire resistance combustion characteristics of the fireproof cable provide guarantee for normal operation of fire-fighting lines and personnel escape when a fire disaster occurs, and the fire resistance performance of the cable meets the requirements of 950 ℃ and 180min specified by the BS standard. The main structure of the cable is composed of a stranded conductor, a fire-resistant insulating layer, a metal layer, a fire-resistant layer, a protective sleeve and the like. The traditional refractory insulating layer mainly uses common gold mica tape insulation, the material cost is low, but when the melting point is about 800 ℃, crystal water can be generated when the melting point exceeds 800 ℃ to cause cable insulation damage circuit failure, and the higher-grade synthetic mica material can reach the melting point of more than 1000 ℃, but the high cost increases the production burden of enterprises.
The inventor considers that the conventional mica tape is a natural mineral material which is extremely easy to be wetted, and means that the defects of low insulation resistance, service life influence and the like of the cable can be caused under the wetted environment.
Disclosure of Invention
In order to prolong the service life of the cable and ensure the fire resistance of the cable, the utility model provides the fireproof cable with the flexible protective layer.
The utility model provides a fireproof cable with a flexible protective layer, which adopts the following technical scheme:
the utility model provides a flexible protective layer fireproof cable, includes the conductor, wraps up the protective sheath that sets up in the conductor outside, the conductor outside is around the package and is provided with the alumina substrate, the alumina substrate multilayer is overlapped around the package in the conductor outside and is formed insulating core, still be provided with refractory material layer between insulating core and the protective sheath.
By adopting the technical scheme, the alumina continuous fiber is a continuous fiber manufactured by taking alumina (melting point 2050 ℃) as a main component, has the characteristics of high surface activity, large elastic modulus, strong chemical erosion resistance and the like, has extremely high monofilament tensile strength, has good impact resistance and flexibility, and can be used as a reinforcing material to be applied to a fiber reinforced composite material large member. Meanwhile, the high alumina melting point is high, the heat conductivity is low, the insulativity is good, the fiber form is still kept in the gas at 1650 ℃, the requirement of long-term service in a high-temperature gas environment is met, and the material is unique and irreplaceable in the aspect of preparing ablation-resistant heat-insulating composite materials. The aluminum oxide sol is prepared by a high molecular sol-gel method, a finished aluminum oxide continuous fiber is obtained after a series of complex processes, the conductor is formed by twisting 2 types of conductors, the multi-layer fireproof aluminum oxide-based material is adopted to form the conductor, the strip made of the material is coated outside the conductor by a multi-layer overlapping coverage rate, the isolation of water molecules in the air is improved, the discontinuity of a tape layer after bending is effectively reduced, and the service life of the cable is prolonged under the condition of guaranteeing the fireproof performance of the cable.
Optionally, the refractory material layer includes filling layer and flame retardant coating, the flame retardant coating cladding is in the filling layer outside.
Through adopting above-mentioned technical scheme, the filling layer is inorganic material and packs, and the hole that forms after the cable transposition all is filled through inorganic material, and the flame retardant coating is alumina refractory material, wraps up inorganic material filling layer in the inner chamber of sheath.
Optionally, the fire-resistant layer outside is wrapped with fire-resistant band, and the protective sheath parcel is in fire-resistant band outside.
Through adopting above-mentioned technical scheme, the material of fire-resistant band is alumina refractory material, and fire-resistant band further makes the compact structure in the protective sheath stable, on the other hand further promotes fire behavior.
Optionally, the filling layer is an inorganic filling material layer, an aluminum metal tape layer is further arranged on the outer side of the filling layer, and the aluminum metal tape layer is used for polymerizing a plurality of insulation wire cores.
Through adopting above-mentioned technical scheme, aluminium metal tape layer makes the effect that separates and take off to scatter between a plurality of sinle silk be difficult to appear, has ensured the stability of the whole inner structure of cable.
Optionally, an elastic layer is further arranged between the protective sleeve and the fireproof wrapping tape layer, and the thickness of the elastic layer is set to be 1mm.
Through adopting above-mentioned technical scheme, the elastic layer has promoted the toughness and the bendability of whole cable, and the cable after bending is reset at the in-process elastic layer messenger bending cable, is difficult to realize buckling and knotting, has ensured the stability that the cable used.
Optionally, a plurality of heat dissipation grooves are uniformly formed in the outer side of the protective sleeve at intervals, and the heat dissipation grooves are arc-shaped.
Through adopting above-mentioned technical scheme, the radiating area of whole protective sheath has been increased to the radiating groove, has promoted the heat dispersion of whole cable.
Optionally, the number of the insulated wire cores in the single cable is three, and the three insulated wire cores are twisted.
Through adopting above-mentioned technical scheme, the cable of transposition shaping is difficult to take place loosely at the in-process of pulling to ensure the toughness and the inner structure's of whole cable stability.
Optionally, a fireproof rubber layer is further arranged on the outer side of the protective sleeve, and the thickness of the fireproof rubber layer is 0.5mm.
Through adopting above-mentioned technical scheme, the fire prevention rubber can expand after meeting the fire to extrude the place that whole cable has the space, the contact between the inside burning position of isolated cable and the air, thereby realize the effect of fire prevention.
In summary, the present utility model includes at least one of the following beneficial technical effects:
the multi-layer fireproof alumina-based material is adopted, the strip made of the material is coated outside the conductor by a multi-layer overlapping coverage rate, so that the isolation of water molecules in the air is improved, the discontinuity of a tape layer after bending is effectively reduced, and the service life of the cable is prolonged under the condition of ensuring the fireproof performance of the cable.
Drawings
Fig. 1 is a schematic cross-sectional view of a first embodiment.
Fig. 2 is a schematic cross-sectional view of a second embodiment.
Reference numerals: 1. a conductor; 2. a protective sleeve; 3. an alumina base layer; 4. an insulated wire core; 5. a refractory material layer; 6. a filling layer; 7. a refractory layer; 8. fire-resistant belting; 9. an aluminum metal tape layer; 10. an elastic layer; 11. a heat dissipation groove; 12. and a fireproof rubber layer.
Detailed Description
The utility model is described in further detail below with reference to fig. 1-2.
Embodiment one:
the embodiment of the utility model discloses a fireproof cable with a flexible protective layer.
Referring to fig. 1, a fireproof cable with a flexible protection layer comprises conductors 1 and protection sleeves 2, wherein the number of the conductors 1 is three, the three conductors 1 are formed by twisting the conductors 1 with the reference number of 2, in order to ensure that the three twisted conductors 1 are not easy to scatter, an aluminum metal belt layer 9 is arranged on the outer side of the twisted conductors 1, the aluminum metal belt layer 9 is mainly used for polymerizing the twisted conductors 1, and of course, glass fiber belt materials can be adopted for bundling, and the conductors are optimally arranged to be bundled by the aluminum metal belt layer 9 in the embodiment.
Referring to fig. 1, an alumina base layer 3 is disposed on the outer side of each conductor 1, and the alumina base layer 3 is wrapped in a multi-layer overlapping wrapping manner, so that two adjacent conductors 1 have good insulation performance, and meanwhile, a layer of alumina base layer 3 is wrapped on the outer sides of the three stranded conductors 1, so that the conductors 1 and the alumina base layer 3 form an insulation wire core 4.
Referring to fig. 1, a hole is formed between an alumina base layer 3 wrapped around the outer side of a twisted conductor 1 and the conductor 1, and a refractory material layer 5 is arranged between a protective cover 2 and an insulating wire core 4 in order to further improve the high temperature resistance and fireproof performance of the whole cable.
Referring to fig. 1, the refractory material layer 5 includes a filling layer 6 and a refractory layer 7, in the pores filled by the filling layer 6, the material of the filling layer 6 is mainly an inorganic material with good thermal conductivity and insulation, such as aluminum oxide or magnesium oxide, and the filling layer 6 can fill the pores formed between the aluminum oxide base layer 3 and the conductor 1 around the outside of the twisted conductor 1. The fire-resistant layer 7 adopts alumina-based material, and the cladding of fire-resistant layer 7 is in the outside of filling layer 6 to fire-resistant layer 7 wraps up whole insulating sinle silk 4, very big promotion the fire resistance of cable.
Referring to fig. 1, in order to further improve the fire resistance of the whole cable, a fire-resistant wrapping tape 8 is wrapped on the outer side of the fire-resistant layer 7, the fire-resistant wrapping tape 8 is made of an alumina-based material and wraps the fire-resistant layer 7 in a manner of overlapping wrapping, and meanwhile, the insulated wire core 4 is difficult to loosen after being twisted. The protective sleeve 2 is made of low-smoke halogen-free polyolefin material, and the protective sleeve 2 is wrapped on the outer side of the fire-resistant wrapping belt 8.
Embodiment two:
the second embodiment is different from the first embodiment in that: referring to fig. 2, an elastic layer 10 is further arranged between the protective cover 2 and the refractory bag belt 8, and the elastic layer 10 is mainly made of a mixture of halogen-free polyolefin and elastic particles and has high elastic recovery. The toughness of the whole cable is greatly improved by the elastic layer 10. The elastic layer 10 and the thickness were set to 1mm so that the overall diameter of the entire cable was ensured to be within the range of 0.5 cm.
Referring to fig. 2, in order to further reduce the occurrence of fire, a layer of fire-proof rubber layer 12 is formed on the outer layer of the protective cover 2 by spraying, and the thickness of the fire-proof rubber layer 12 is set to be 0.5mm as a film, so that when the cable is in fire, the fire-proof rubber preheats and expands the pores inside the extruded cable, and the cable is blocked from contacting with the outside air, thereby realizing the effects of flame retardance and fire prevention.
Referring to fig. 2, in order to further improve the service life of the whole cable, reduce the occurrence of fire, a plurality of heat dissipation grooves 11 are formed on the outer side of the protective sleeve 2 in an embossing manner, the inner cavities of the heat dissipation grooves 11 are arc-shaped, and the heat dissipation areas of the protective sleeve 2 are increased by the heat dissipation grooves 11, so that the cable can effectively dissipate heat in the use process, and the occurrence of fire is reduced.
The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.
Claims (8)
1. The utility model provides a flexible protective layer fireproof cable, includes conductor (1), parcel setting at protective sheath (2) in conductor (1) outside, its characterized in that: the aluminum oxide base layer (3) is arranged on the outer side of the conductor (1) in a wrapping mode, the aluminum oxide base layer (3) is wrapped on the outer side of the conductor (1) in a multi-layer overlapping mode, an insulating wire core (4) is formed, and a fireproof material layer (5) is further arranged between the insulating wire core (4) and the protective sleeve (2).
2. A flexible protective layer fire resistant cable as defined in claim 1, wherein: the refractory material layer (5) comprises a filling layer (6) and a refractory layer (7), and the refractory layer (7) is coated on the outer side of the filling layer (6).
3. A flexible protective layer fire resistant cable as defined in claim 2, wherein: the fire-resistant layer (7) is wrapped with a fire-resistant wrapping tape (8), and the protective sleeve (2) is wrapped on the outer side of the fire-resistant wrapping tape (8).
4. A flexible protective layer fire resistant cable according to claim 3, wherein: the filling layer (6) is an inorganic filling material layer, an aluminum metal belt layer (9) is further arranged on the outer side of the filling layer (6), and the aluminum metal belt layer (9) is used for polymerizing a plurality of insulating wire cores (4).
5. A flexible protective layer fire resistant cable according to claim 3, wherein: an elastic layer (10) is further arranged between the protective sleeve (2) and the fireproof wrapping tape (8), and the thickness of the elastic layer (10) is set to be 1mm.
6. A flexible protective layer fire resistant cable as defined in claim 5, wherein: a plurality of heat dissipation grooves (11) are uniformly formed in the outer side of the protective sleeve (2) at intervals, and the heat dissipation grooves (11) are arc-shaped.
7. A flexible protective layer fire resistant cable as defined in claim 1, wherein: the number of the insulated wire cores (4) in the single cable is three, and the three insulated wire cores (4) are twisted.
8. A flexible protective layer fire resistant cable as defined in claim 1, wherein: the outer side of the protective sleeve (2) is also provided with a fireproof rubber layer (12), and the thickness of the fireproof rubber layer (12) is 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321673081.2U CN220020694U (en) | 2023-06-28 | 2023-06-28 | Flexible protective layer fireproof cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321673081.2U CN220020694U (en) | 2023-06-28 | 2023-06-28 | Flexible protective layer fireproof cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220020694U true CN220020694U (en) | 2023-11-14 |
Family
ID=88683710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321673081.2U Active CN220020694U (en) | 2023-06-28 | 2023-06-28 | Flexible protective layer fireproof cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220020694U (en) |
-
2023
- 2023-06-28 CN CN202321673081.2U patent/CN220020694U/en active Active
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