CN221175830U - Fireproof low-voltage power cable - Google Patents
Fireproof low-voltage power cable Download PDFInfo
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- CN221175830U CN221175830U CN202321950273.3U CN202321950273U CN221175830U CN 221175830 U CN221175830 U CN 221175830U CN 202321950273 U CN202321950273 U CN 202321950273U CN 221175830 U CN221175830 U CN 221175830U
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- cable
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- 239000010410 layer Substances 0.000 claims abstract description 67
- 238000009413 insulation Methods 0.000 claims abstract description 34
- 239000003063 flame retardant Substances 0.000 claims abstract description 31
- 239000010445 mica Substances 0.000 claims abstract description 27
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 27
- 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 claims abstract description 24
- 229920003225 polyurethane elastomer Polymers 0.000 claims abstract description 22
- 239000002131 composite material Substances 0.000 claims abstract description 18
- 229910052751 metal Inorganic materials 0.000 claims abstract description 17
- 239000002184 metal Substances 0.000 claims abstract description 17
- 229920000098 polyolefin Polymers 0.000 claims abstract description 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 12
- 239000001301 oxygen Substances 0.000 claims abstract description 12
- 239000000919 ceramic Substances 0.000 claims abstract description 10
- 238000002955 isolation Methods 0.000 claims abstract description 9
- 229910001335 Galvanized steel Inorganic materials 0.000 claims abstract description 8
- 239000008397 galvanized steel Substances 0.000 claims abstract description 8
- 239000011247 coating layer Substances 0.000 claims abstract description 7
- 230000006835 compression Effects 0.000 claims abstract description 5
- 238000007906 compression Methods 0.000 claims abstract description 5
- 230000017525 heat dissipation Effects 0.000 claims abstract description 5
- 239000000779 smoke Substances 0.000 claims abstract description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 23
- 229910052802 copper Inorganic materials 0.000 claims description 23
- 239000010949 copper Substances 0.000 claims description 23
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- 239000004020 conductor Substances 0.000 claims description 12
- 229920002379 silicone rubber Polymers 0.000 claims description 10
- 239000000758 substrate Substances 0.000 claims description 9
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 239000004917 carbon fiber Substances 0.000 claims description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 7
- 229910052759 nickel Inorganic materials 0.000 claims description 7
- 239000004417 polycarbonate Substances 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 5
- 239000011521 glass Substances 0.000 claims description 5
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 3
- 229920001568 phenolic resin Polymers 0.000 claims description 3
- 239000005011 phenolic resin Substances 0.000 claims description 3
- 229920000515 polycarbonate Polymers 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 230000009970 fire resistant effect Effects 0.000 claims 8
- 239000011241 protective layer Substances 0.000 abstract description 6
- 230000007797 corrosion Effects 0.000 description 13
- 238000005260 corrosion Methods 0.000 description 13
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 239000000126 substance Substances 0.000 description 4
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
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- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
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- 239000000463 material Substances 0.000 description 3
- 241001391944 Commicarpus scandens Species 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
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- 239000003921 oil Substances 0.000 description 2
- 229910003849 O-Si Inorganic materials 0.000 description 1
- 229910003872 O—Si Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
Landscapes
- Insulated Conductors (AREA)
Abstract
The utility model discloses a fireproof low-voltage power cable which comprises a polyurethane elastomer wire core protection layer and a plurality of fireproof insulating wire cores, wherein the fireproof insulating wire cores are arranged in the polyurethane elastomer wire core protection layer; a plurality of heat dissipation compression-resistant arc holes are formed between the polyurethane elastomer wire core protective layer and the wrapping metal shielding composite belt; the metal shielding composite belt is externally extruded with a ceramic polyolefin oxygen isolation layer, a mica heat insulation fireproof belt is arranged outside the ceramic polyolefin oxygen isolation layer, a galvanized steel wire braided armor layer is arranged outside the mica heat insulation fireproof belt, a fireproof coating layer is coated outside the galvanized steel wire braided armor layer, and a high-flame-retardant low-smoke halogen-free polyolefin sheath is externally extruded with the fireproof coating layer. The utility model has higher mechanical strength, tensile property and wear resistance, excellent flame retardant and fireproof performance, adapts to different laying environments, ensures the working stability of the cable and greatly prolongs the service life of the cable.
Description
Technical Field
The utility model relates to the field of wires and cables, in particular to a fireproof low-voltage power cable.
Background
The low-voltage power cable plays an important role in linking in the infrastructure; the early-stage high-capacity power cables used in large quantities include oil-immersed paper-insulated power cables and rubber-insulated power cables; with the large development of petrochemical industry worldwide, the low-voltage power cable has become a worldwide development trend; the low-voltage power cable has the advantages of simple manufacturing process, no limitation of laying fall, high working temperature, simple and convenient laying, maintenance and connection of the cable, good chemical resistance and other performances, and has become an important variety in rapid development of the power cable.
In the modern building construction process, a large amount of cables are required, particularly for low-voltage power cables, the cables are sometimes required to be laid in a cable well in the laying process, and when the cables are pulled by large force or manually trampled, cable breakage or copper conductor disconnection is easily caused, so that the use of the cables is affected. This requires a high mechanical strength, high tensile properties and wear resistance of the power cable to accommodate different laying environments.
The existing cable wrapping tape is mostly made of non-woven fabrics, has low oxygen index, is easy to burn, has no combustion resistance, and cannot achieve the purpose of preventing combustion.
Although copper strips are used in the field of cables because of their shielding and protection properties; however, the existing copper strips for cables have the problems of poor ductility, corrosion resistance, poor magnetic shielding property and the like.
Meanwhile, with the continuous improvement of the security protection and system security requirements of society, the corresponding various performance requirements on the cable are increasingly increased, in particular to the fire resistance requirements on the cable; in the prior art, the cable has single fireproof performance and is easy to cause potential safety hazard; in order to ensure that the smoothness of power and communication lines is ensured within a certain period of time in the case of fire, the cable is required to have better fireproof performance.
Disclosure of utility model
The utility model provides an anti-extrusion wear-resistant fireproof low-voltage power cable with good fireproof performance and extrusion resistance and wear resistance.
The fireproof low-voltage power cable comprises a polyurethane elastomer wire core protection layer and a plurality of fireproof insulating wire cores, wherein the fireproof insulating wire cores are arranged in the polyurethane elastomer wire core protection layer; the metal shielding composite belt is wrapped outside the polyurethane elastomer wire core protection layer, and a plurality of heat dissipation compression-resistant arc holes are formed between the polyurethane elastomer wire core protection layer and the wrapping metal shielding composite belt; the metal shielding composite belt is externally extruded with a ceramic polyolefin oxygen isolation layer, a mica heat insulation fireproof belt is arranged outside the ceramic polyolefin oxygen isolation layer, a galvanized steel wire braided armor layer is arranged outside the mica heat insulation fireproof belt, a fireproof coating layer is coated outside the galvanized steel wire braided armor layer, and a high-flame-retardant low-smoke halogen-free polyolefin sheath is externally extruded with the fireproof coating layer.
The fireproof insulation wire core is further improved by a concentric stranded conductor, a silicon rubber insulation layer extruded outside the concentric stranded conductor and a high-flame-retardant fire-insulating oxygen-insulating glass cloth wrapping tape wrapped outside the silicon rubber insulation layer.
Further improved, the conductor is formed by stranding a plurality of galvanized copper wires.
Further improved, the center of the polyurethane elastomer wire core protection layer is provided with a carbon fiber reinforced core, and a plurality of wire core holes are formed in the carbon fiber reinforced core.
Further improved, the inner diameter of the wire core hole is the same as the outer diameter of the fireproof insulation wire core.
Further improved, the metal shielding composite belt comprises a copper base belt, wherein the upper surface of the copper base belt is sequentially and vacuum-plated with an aluminum film and a nickel film from bottom to top, and the lower surface of the copper base belt is sequentially and vacuum-plated with the aluminum film and the nickel film from top to bottom.
The mica heat insulation fireproof belt comprises a mica paper substrate, wherein a submicron spherical silica powder layer is formed on the outer surface of one side of the mica paper substrate, an environment-friendly flame-retardant film is formed on the outer surface of the submicron spherical silica powder layer, and a phenolic resin layer is coated on the surface of the environment-friendly flame-retardant film; an environment-friendly flame-retardant film is formed on the outer surface of the other side of the mica paper substrate, and a polytetrafluoroethylene layer is coated on the outer surface of the environment-friendly flame-retardant film.
Further improved, the environment-friendly flame-retardant film is a halogen-free environment-friendly flame-retardant polycarbonate PC film, the thickness is 0.05mm, and the width is 930mm.
Compared with the prior art, the utility model has the beneficial effects that:
The plurality of wire cores are wrapped in the polyurethane elastomer wire core protection layer, so that the cable is more stable and is not easy to shake, the cable core is more round, and in the laying process, when the cable is pulled by a large force or is manually trampled, the cable is not broken or a copper conductor is broken, and the use of the cable is not affected; in addition, the polyurethane elastomer wire core protective layer has excellent wear resistance, excellent ozone resistance, high hardness, high strength, good elasticity, low temperature resistance, good oil resistance, chemical resistance and environmental resistance, and greatly improves the mechanical strength, higher tensile property, wear resistance and other properties of the cable core so as to adapt to different laying environments.
The insulating layer is provided with a high-flame-retardant fire-insulating oxygen-insulating glass cloth tape, does not burn at high temperature, can prevent flame from passing through if fire occurs, and protects the insulating layer from burning; and the insulating layer is not easy to break, has soft property, is flat in wrapping and the like, and can prevent moisture from entering the insulating layer in the process of transportation.
The metal shielding composite belt has excellent ductility, corrosion resistance and magnetic shielding performance, so that the ductility, corrosion resistance and magnetic shielding performance of the cable are improved, and the problems of poor ductility, corrosion resistance, poor magnetic shielding performance and the like of the copper belt in the cable are solved.
The defect of single fireproof performance of the existing fireproof cable is overcome through the design of the inner and outer multi-layer fireproof structure; the inner and outer fireproof structures are formed between the fireproof layers, so that the fireproof performance and the flame retardance of the cable are greatly improved, and the normal operation and use of the cable under the condition of fire are effectively ensured.
The metal shielding composite tape has excellent ductility, corrosion resistance and magnetic shielding performance, so that the ductility, corrosion resistance and magnetic shielding performance of the cable are improved, and the problems of poor ductility, corrosion resistance, poor magnetic shielding performance and the like of the copper tape used in the cable in the prior art are solved.
The adopted mica heat insulation fireproof belt can be used as a cable coating material, has better bending resistance and physical strength, has higher fireproof and waterproof grades, can maintain the complete function even under the condition that the protective layer on the outer layer of the cable is stripped and damaged, and has smaller influence on the loss and transmission performance of the cable core, so that the mica heat insulation fireproof belt is more suitable for being used as a cable dressing.
The cable outer sheath is high in flame retardance, low in smoke and zero halogen in polyolefin sheath, so that the cable has good physical and mechanical properties, good flame retardance, high elongation at break and good cracking resistance, and the safety of the cable in the laying and dragging processes is protected.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic structural view of a polyurethane elastomer core protective layer;
FIG. 3 is a schematic view of a metallic shielding composite tape;
fig. 4 is a schematic structural view of a mica heat insulating fire belt.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
1-2, A fireproof low-voltage power cable comprises a polyurethane elastomer wire core protection layer 1, wherein a carbon fiber reinforced core 2 is arranged in the center of the polyurethane elastomer wire core protection layer, and a plurality of wire core holes 3 are formed in the carbon fiber reinforced core; the fireproof insulation wire cores are correspondingly arranged in each wire core hole, the inner diameter of each wire core hole is the same as the outer diameter of each fireproof insulation wire core, so that the fireproof insulation wire cores are tightly embedded in the polyurethane elastomer wire core protection layer, are more stable and are not easy to shake, the cable cores are more round, and the high strength of the carbon fiber reinforced core is combined, so that the cable is prevented from being broken or broken due to the fact that the cable is pulled by a large force or is manually trampled in the laying process, and the use of the cable is affected; in addition, the polyurethane elastomer wire core protective layer has excellent wear resistance, excellent ozone resistance, high hardness, high strength, good elasticity, low temperature resistance, good oil resistance, chemical resistance and environmental resistance, and greatly improves the mechanical strength, higher tensile property, wear resistance and other properties of the cable core so as to adapt to different laying environments.
The fireproof insulation wire core is composed of a concentric stranded conductor 4, a silicon rubber insulation layer 5 extruded outside the concentric stranded conductor, and a high-flame-retardant fire-insulating oxygen-insulating glass cloth wrapping tape 6 wrapped outside the silicon rubber insulation layer; the conductor is formed by twisting a plurality of galvanized copper wires, is not easy to rust and corrode, can be used for a long time in a humid and highly corrosive environment, prolongs the service life of the copper wires, reduces the replacement cost, reduces the failure condition of circuits or equipment after corrosion of the copper wires, and improves the reliability and stability of the circuits and the equipment;
The silicon rubber insulating layer is adopted for insulation, so that the silicon rubber has high-temperature stability, si-O-Si bonds in the silicon rubber are very stable to oxygen, ozone, ultraviolet rays and the like, and the silicon rubber has excellent weather resistance, insulating property, corona resistance and arc resistance under the condition of no addition of any additive;
the wrapping tape adopts the glass cloth wrapping tape with high flame retardance, fire isolation and oxygen isolation, does not burn at high temperature, can prevent flame from passing through if fire disaster occurs, and protects the insulating layer from burning; and the insulating layer is not easy to break, has soft property, is flat in wrapping and the like, and can prevent moisture from entering the insulating layer in the process of transportation.
The metal shielding composite belt 7 is wrapped outside the polyurethane elastomer wire core protection layer, three heat dissipation and compression resistance arc holes 8 are formed between the three arc edges of the polyurethane elastomer wire core protection layer and the wrapped metal shielding composite belt, so that heat dissipation of a cable core is facilitated, the problems that the cable is increased due to overheat resistance and current transmission is blocked are solved, the current carrying capacity of the cable is greatly improved, and further the operation of the cable is more stable;
The ceramic polyolefin oxygen barrier layer 9 is extruded outside the metal shielding composite band, and can rapidly generate a complete ceramic shell under the temperature or flame condition of more than 650 ℃, the bending strength can reach 10MPa, the dielectric strength is more than 20kV/mm, and the volume resistivity is more than 5 multiplied by 1013 omega cm; the generated ceramic shell is not cracked and dripped, has excellent electric isolation performance and excellent oxygen and heat insulation effect, can effectively isolate the damage of high-temperature flame to the inside of a circuit, delay the decomposition of internal materials, avoid the fusing of conductors in the flame, and ensure the smoothness of the circuit under the condition of fire;
A mica heat insulation fireproof belt 10 is arranged outside the ceramic polyolefin oxygen insulation layer to further prevent the cable from being fire; the galvanized steel wire braided armor layer 11 is arranged outside the mica heat insulation fireproof belt, the fireproof paint layer 12 is coated outside the galvanized steel wire braided armor layer, the cable is further fireproof again, the fireproof capability of the cable can be improved, the flame spreading propagation speed is slowed down, and the cable can be prevented from burning in a certain time; the high-flame-retardance low-smoke halogen-free polyolefin sheath 13 is extruded outside the fireproof coating layer, so that the cable has good physical and mechanical properties and good flame retardance, high elongation at break and good cracking resistance, and the safety of the cable in the laying and dragging processes is protected.
As shown in fig. 3, the metal shielding composite tape 7 comprises a copper base tape 71, wherein the upper surface of the copper base tape is sequentially vacuum-plated with an aluminum film 72 and a nickel film 73 from bottom to top, and the lower surface of the copper base tape is sequentially vacuum-plated with the aluminum film and the nickel film from top to bottom; the aluminum film can improve the ductility and corrosion resistance of the copper strip, and the nickel film enhances the magnetic shielding performance of the copper strip, so that the metal shielding composite strip has excellent ductility, corrosion resistance and magnetic shielding performance, thereby increasing the ductility, corrosion resistance and magnetic shielding performance of the cable, and solving the problems of poor ductility, corrosion resistance, poor magnetic shielding performance and the like of the copper strip in the existing cable.
As shown in fig. 4, the mica heat insulation fireproof belt 10 comprises a mica paper substrate 101, wherein a submicron spherical silica powder layer 102 is formed on the outer surface of one side of the mica paper substrate, so that the rigidity, the wear resistance, the weather resistance, the impact resistance, the compression resistance, the tensile resistance, the flame resistance, the arc insulation resistance and the ultraviolet radiation resistance of the mica heat insulation fireproof belt are further improved; the outer surface of the submicron spherical silica powder layer is formed with a layer of environment-friendly flame-retardant film 103, and the surface of the environment-friendly flame-retardant film is coated with a layer of phenolic resin layer 104, so that the environment-friendly flame-retardant film has high temperature resistance and can keep the structural integrity and dimensional stability even at a very high temperature; an environment-friendly flame-retardant film 103 is formed on the outer surface of the other side of the mica paper substrate, and a polytetrafluoroethylene coating 105 is coated on the outer surface of the environment-friendly flame-retardant film, so that the environment-friendly flame-retardant mica paper has excellent chemical stability, corrosion resistance, sealing property, high lubricating non-tackiness, electrical insulation and good ageing resistance, and various performances of the cable are further improved;
The environment-friendly flame-retardant film is a halogen-free flame-retardant polycarbonate PC film, has the thickness of 0.05mm and the width of 930mm, is not easy to burn, or can be automatically extinguished after being released from fire, and has good formability, excellent mechanical properties, better dimensional stability at high temperature and high flame retardant grade;
the mica heat insulation fireproof belt has a multi-layer flame-retardant fireproof structure, greatly enhances the flame-retardant fireproof effect, can be used as a cable coating material, has better bending resistance and physical strength, and also has higher fireproof and waterproof grades, and can maintain the complete function even if the protective layer on the outer layer of the cable is peeled off and damaged, and meanwhile, has smaller influence on the loss and transmission performance of the cable core, so that the mica heat insulation fireproof belt is more suitable for being used as a cable dressing.
In summary, through the improvement, the cable has higher mechanical strength, tensile property, abrasion resistance, excellent flame retardance, fireproof performance and the like, is suitable for different laying environments, ensures the working stability of the cable, and greatly prolongs the service life of the cable.
The present utility model has been described in terms of the preferred embodiments thereof, and it should be understood by those skilled in the art that various modifications can be made without departing from the principles of the utility model, and such modifications should also be considered as being within the scope of the utility model.
Claims (8)
1. A fire-resistant low voltage power cable, characterized in that: the fireproof insulation wire core comprises a polyurethane elastomer wire core protection layer and a plurality of fireproof insulation wire cores, wherein the fireproof insulation wire cores are arranged in the polyurethane elastomer wire core protection layer; the metal shielding composite belt is wrapped outside the polyurethane elastomer wire core protection layer, and a plurality of heat dissipation compression-resistant arc holes are formed between the polyurethane elastomer wire core protection layer and the wrapping metal shielding composite belt; the metal shielding composite belt is externally extruded with a ceramic polyolefin oxygen isolation layer, a mica heat insulation fireproof belt is arranged outside the ceramic polyolefin oxygen isolation layer, a galvanized steel wire braided armor layer is arranged outside the mica heat insulation fireproof belt, a fireproof coating layer is coated outside the galvanized steel wire braided armor layer, and a high-flame-retardant low-smoke halogen-free polyolefin sheath is externally extruded with the fireproof coating layer.
2. The fire resistant power cable according to claim 1, characterized in that: the fireproof insulating wire core consists of a concentric stranded conductor, a silicon rubber insulating layer extruded outside the concentric stranded conductor and a high-flame-retardant fire-insulating oxygen-insulating glass cloth wrapping tape wrapped outside the silicon rubber insulating layer.
3. The fire resistant power cable according to claim 2, characterized in that: the conductor is formed by stranding a plurality of galvanized copper wires.
4. The fire resistant power cable according to claim 1, characterized in that: the center of the polyurethane elastomer wire core protection layer is provided with a carbon fiber reinforced core, and a plurality of wire core holes are formed in the carbon fiber reinforced core.
5. The fire resistant electrical power cable according to claim 4, wherein: the inner diameter of the wire core hole is the same as the outer diameter of the fireproof insulation wire core.
6. The fire resistant power cable according to claim 1, characterized in that: the metal shielding composite belt comprises a copper base belt, wherein the upper surface of the copper base belt is sequentially and vacuum-plated with an aluminum film and a nickel film from bottom to top, and the lower surface of the copper base belt is sequentially and vacuum-plated with the aluminum film and the nickel film from top to bottom.
7. The fire resistant power cable according to claim 1, characterized in that: the mica heat insulation fireproof belt comprises a mica paper substrate, wherein a submicron spherical silica powder layer is formed on the outer surface of one side of the mica paper substrate, an environment-friendly flame-retardant film is formed on the outer surface of the submicron spherical silica powder layer, and a phenolic resin layer is coated on the surface of the environment-friendly flame-retardant film; an environment-friendly flame-retardant film is formed on the outer surface of the other side of the mica paper substrate, and a polytetrafluoroethylene layer is coated on the outer surface of the environment-friendly flame-retardant film.
8. The fire resistant electrical power cable according to claim 7, characterized in that: the environment-friendly flame-retardant film is a halogen-free environment-friendly flame-retardant polycarbonate PC film, the thickness is 0.05mm, and the width is 930mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321950273.3U CN221175830U (en) | 2023-07-24 | 2023-07-24 | Fireproof low-voltage power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321950273.3U CN221175830U (en) | 2023-07-24 | 2023-07-24 | Fireproof low-voltage power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221175830U true CN221175830U (en) | 2024-06-18 |
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ID=91438797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321950273.3U Active CN221175830U (en) | 2023-07-24 | 2023-07-24 | Fireproof low-voltage power cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221175830U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119446646A (en) * | 2025-01-13 | 2025-02-14 | 成都营门电缆有限责任公司 | A reinforced inorganic mineral insulated fireproof cable |
-
2023
- 2023-07-24 CN CN202321950273.3U patent/CN221175830U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119446646A (en) * | 2025-01-13 | 2025-02-14 | 成都营门电缆有限责任公司 | A reinforced inorganic mineral insulated fireproof cable |
| CN119446646B (en) * | 2025-01-13 | 2025-04-11 | 成都营门电缆有限责任公司 | Enhanced inorganic mineral insulation fireproof cable |
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