CN222028811U - Flexible mineral insulation incombustible cable - Google Patents
Flexible mineral insulation incombustible cable Download PDFInfo
- Publication number
- CN222028811U CN222028811U CN202421046514.6U CN202421046514U CN222028811U CN 222028811 U CN222028811 U CN 222028811U CN 202421046514 U CN202421046514 U CN 202421046514U CN 222028811 U CN222028811 U CN 222028811U
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- China
- Prior art keywords
- cable
- metal outer
- filling rope
- layer
- flexible mineral
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229910052500 inorganic mineral Inorganic materials 0.000 title claims abstract description 20
- 239000011707 mineral Substances 0.000 title claims abstract description 20
- 238000009413 insulation Methods 0.000 title description 10
- 239000010410 layer Substances 0.000 claims abstract description 42
- 239000004020 conductor Substances 0.000 claims abstract description 32
- 239000002184 metal Substances 0.000 claims abstract description 20
- 229910052751 metal Inorganic materials 0.000 claims abstract description 20
- 239000011241 protective layer Substances 0.000 claims abstract description 19
- 238000002955 isolation Methods 0.000 claims abstract description 17
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 31
- 229910052802 copper Inorganic materials 0.000 claims description 31
- 239000010949 copper Substances 0.000 claims description 31
- 239000003365 glass fiber Substances 0.000 claims description 17
- 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 claims description 15
- 238000003032 molecular docking Methods 0.000 claims description 4
- 238000000137 annealing Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 12
- 238000002485 combustion reaction Methods 0.000 abstract description 6
- 238000005507 spraying Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 abstract description 2
- 238000004049 embossing Methods 0.000 description 20
- 238000003466 welding Methods 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 11
- 230000005540 biological transmission Effects 0.000 description 7
- 230000006872 improvement Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000010445 mica Substances 0.000 description 5
- 229910052618 mica group Inorganic materials 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000009970 fire resistant effect Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000004744 fabric Substances 0.000 description 3
- 239000011256 inorganic filler Substances 0.000 description 3
- 229910003475 inorganic filler Inorganic materials 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000012779 reinforcing material Substances 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 230000001754 anti-pyretic effect Effects 0.000 description 2
- 239000002221 antipyretic Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- -1 filling rope Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 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
Landscapes
- Insulated Conductors (AREA)
Abstract
本实用新型涉及电缆技术领域，且公开了一种柔性矿物绝缘不燃电缆，包括金属外护层，所述金属外护层的前端安装有锁紧安装环，同时金属外护层内安装有隔离层，在隔离层的内侧安装有保护层，在保护层的内侧安装有无机填充绳，在无机填充绳的内部安装有多根导体，且导体之间安装有绝缘绳，通过电缆本体从内到外依次包括导体、绝缘层、填充绳、保护层、隔离层、金属外护层，电缆结构合理简单，具有优秀的耐火性能，满足机械冲击和喷淋的耐火试验要求，电缆材料均为不可燃的热值较低材料，满足燃烧性能等级A级总热值PCS≤2.0MJ/kg的要求。
The utility model relates to the technical field of cables, and discloses a flexible mineral insulated non-combustible cable, comprising a metal outer sheath, a locking mounting ring being installed at the front end of the metal outer sheath, an isolation layer being installed inside the metal outer sheath, a protective layer being installed on the inner side of the isolation layer, an inorganic filling rope being installed on the inner side of the protective layer, a plurality of conductors being installed inside the inorganic filling rope, and insulating ropes being installed between the conductors. The cable body comprises, from the inside to the outside, a conductor, an insulating layer, a filling rope, a protective layer, an isolation layer, and a metal outer sheath in sequence. The cable has a reasonable and simple structure, has excellent fire resistance, meets the fire resistance test requirements of mechanical impact and spraying, and the cable materials are all non-combustible materials with low calorific value, meeting the requirement of total calorific value PCS≤2.0MJ/kg of combustion performance grade A.
Description
Technical Field
The utility model relates to the technical field of cables, in particular to a flexible mineral insulation nonflammable cable.
Background
The DBJ/T15-226-2021 (fire protection technical regulations for electric wires and cables for civil buildings) explicitly indicates that the fire-fighting elevator and auxiliary evacuation elevator power supply cables with building height more than 250m for civil buildings are required to adopt a fire-resistant cable with burning performance meeting the national standard (class A and fire-resistant time not less than 3h in the classification of electric and optical cable burning performance of GB 31247-2014), and the total heat value PCS is not more than 2.0MJ/kg except the fire-resistant performance;
the A-level fire-resistant cable in the current market is mainly a magnesia mineral insulated cable, the insulation is powdery mineral insulation, the whole cable is made of inorganic materials, has excellent fire resistance, has very low heat release during combustion, meets the requirement of the A-level of combustion performance, however, special production equipment is needed, large-length production cannot be performed, the material cost is high, and the bending performance is poor in the laying process, so that the utility model provides the flexible mineral insulation incombustible cable which can be continuously produced in large length, has high production efficiency and relatively low cost.
Disclosure of utility model
(One) solving the technical problems
Aiming at the defects of the prior art, the utility model provides a flexible mineral insulation incombustible cable which has the advantages of continuous large-length production, high production efficiency, relatively low cost and the like, and solves the problems of incapability of large-length production, high material cost and poor bending performance in the laying process.
(II) technical scheme
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a flexible mineral insulation incombustible cable, includes the metal outer sheath, the locking collar is installed to the front end of metal outer sheath, installs the isolation layer in the metal outer sheath simultaneously, installs the protective layer in the inboard of isolation layer, installs inorganic filler rope in the inboard of protective layer, installs many conductors at the internally mounted of inorganic filler rope, and installs insulating rope between the conductor.
As a further improvement of the scheme, the side part of the locking mounting ring is provided with anti-slip insections, and the front side of the locking mounting ring is provided with a docking bayonet;
Through above-mentioned technical scheme, the inboard of locking collar is provided with the screw thread to threaded connection is in transmission equipment's interface department, makes it be connected fixedly with transmission equipment interface, when can increase the installation through the butt joint bayonet socket that sets up, the accuracy of butt joint between the interface, simultaneously, increases when the installation through the anti-skidding insection of locking collar lateral part, with the frictional resistance between the hand.
As a further improvement of the scheme, the conductor specifically adopts a first type and a second type of defervescing copper conductor;
Through the technical scheme, the antipyretic copper conductor can improve the conductivity and the mechanical property of the copper conductor, reduce stress generated in the processing process, improve the conductivity, the mechanical property and the corrosion resistance of the copper conductor, and improve the transmission quality and the reliability of the copper conductor.
As a further improvement of the scheme, an insulating layer is arranged in the inorganic filling rope, and the insulating layer is specifically a single-sided synthetic mica tape and is wrapped on the side part of the conductor;
Through the technical scheme, the insulating layer is wrapped on the side part of the conductor, and during production, the four layers of continuous lapping and wrapping technology is adopted, the thickness of the single-sided synthetic mica tape is 0.14mm, and the lapping rate is 5% -10%.
As a further improvement of the scheme, the inorganic filling rope is specifically an alkali-free glass fiber filling rope and is filled at the side part of the insulating layer;
Through the technical scheme, the inorganic filling rope and the insulating wire core are stranded together to form the wire core, the inorganic filling rope has good flexibility and durability, a certain proportion of lubricating materials are filled in the filling rope, friction force between the ropes can be effectively reduced, durability and service life of the rope are effectively improved, self integrity can be kept in flame without smoke, the integrity of the cable core is kept when the flame burns, and the cable inner structure is ensured to be compact and not loose when the cable is impacted or vibrated.
As a further improvement of the scheme, the protective layer is specifically a double-layer single-sided synthetic mica tape and is continuously wrapped at the side part of the inorganic filling rope;
According to the technical scheme, the single-sided synthetic mica tape takes synthetic mica paper as a base material, glass fiber cloth as a single-sided reinforcing material, has good fire resistance, adopts continuous lapping and wrapping, and has the thickness of 0.14mm and the lapping rate of 10% -20%.
As a further improvement of the above scheme, the isolating layer is specifically an alkali-free glass fiber belt and is continuously wrapped around the side part of the protecting layer;
Through above-mentioned technical scheme, in order to strengthen fire resistance and protect inside mica structure, set up the isolation layer, the isolation layer adopts double-deck continuous lapping to wrap up to alkali-free glass fiber area's thickness is 0.2mm, and the rate of lapping is 10% -20%, and alkali-free glass fiber area has good fire-retardant and the fire-retardant grade effect that improves the cable to the cable, avoids the cable to produce the burning, and the glass fiber area can keep self integrality under the high temperature, and the speed that heat to the inside transmission of cable can be delayed to the fluffy state of itself, thereby reduces the heat release volume.
As a further improvement of the above scheme, the metal outer sheath is specifically an embossing welded copper sheath;
According to the technical scheme, the embossing welding copper sheath can reduce the heat release amount of the cable, a sealed embossing copper pipe is formed through procedures such as longitudinally wrapping welding embossing and the like, the embossing welding copper sheath can be used as a grounding electrode, the resistivity of a copper belt is less than or equal to 0.017593 omega mm & lt 2 & gt/m at 20 ℃, the embossing welding copper sheath can be used as a grounding electrode of the cable, meanwhile, the embossing welding copper sheath has a high melting point 1083 ℃ and cannot burn through the copper pipe due to common flame, the cable core is prevented from being directly contacted with flame, the direct flame combustion in the cable is avoided, the fire isolating effect is achieved, in addition, the toughness and the impact resistance of the cable are improved, the embossing structure enables the cable to keep the toughness of the cable, small-amplitude bending can rebound automatically, the impact force can be dispersed when the embossing structure is kept stable, the effect of physically protecting the conductor is achieved, the cable is placed from being affected by environmental factors, the cable can be guaranteed to stably run for a long time under extreme environments, the occurrence of electric power accidents can be avoided, the corrosion and erosion of external chemical substances can be avoided, and the electric power can be stably conveyed and used.
Compared with the prior art, the utility model provides the flexible mineral insulation nonflammable cable, which has the following beneficial effects:
1. This flexible mineral insulation incombustible cable includes conductor, insulating layer, filling rope, protective layer, isolation layer, metal outer sheath in proper order from inside to outside through the cable body, cable structure is reasonable simple, excellent fire resistance has, satisfy the fire resistance test requirement of mechanical shock and spraying, cable material is incombustible lower material of calorific value, satisfy the requirement that the PCS of the A level total calorific value of combustion performance class is less than or equal to 2.0MJ/kg, in addition, the cable production degree of difficulty is low, production efficiency is high, manufacturing cost is relatively lower, the embossing structure of metal outer sheath makes the cable have better pliability, the convenient construction of laying.
Drawings
FIG. 1 is a schematic view of the overall exterior partial structure of the cable of the present utility model;
fig. 2 is a schematic view of the overall planar structure of the cable of the present utility model.
In the drawings, the list of components represented by the various numbers is as follows:
1. A metal outer protective layer; 2. locking the mounting ring; 3. anti-slip insections; 4. a docking bay; 5. an isolation layer; 6. a protective layer; 7. an inorganic filler rope; 8. a conductor; 9. an insulating layer; 10. an insulating rope.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-2, the flexible mineral insulated nonflammable cable provided by the utility model comprises a metal outer protective layer 1, wherein a locking installation ring 2 is installed at the front end of the metal outer protective layer 1, meanwhile, an isolation layer 5 is installed in the metal outer protective layer 1, a protection layer 6 is installed at the inner side of the isolation layer 5, an inorganic filling rope 7 is installed at the inner side of the protection layer 6, a plurality of conductors 8 are installed in the inorganic filling rope 7, and insulating ropes 10 are installed between the conductors 8.
Further, the side part of the locking mounting ring 2 is provided with an anti-slip tooth pattern 3, and the front side of the locking mounting ring 2 is provided with a docking bayonet 4;
More specifically, the inner side of the locking mounting ring 2 is provided with threads, and the threads are connected to the interface of the transmission equipment, so that the locking mounting ring is fixedly connected with the interface of the transmission equipment, when the connection bayonet 4 is arranged, the accuracy of connection between the interfaces can be improved, and meanwhile, the friction resistance between the locking mounting ring and the hands is improved when the locking mounting ring is installed through the anti-slip insection 3 on the side part of the locking mounting ring 2.
Further, the conductor 8 is a first type and a second type of antipyretic copper conductor;
More specifically, the defervescing copper conductor can improve the conductivity and mechanical properties of the copper conductor, reduce stress generated in the processing process, improve the conductivity, mechanical and corrosion resistance of the copper conductor, and improve the transmission quality and reliability of the copper conductor.
Further, an insulating layer 9 is arranged in the inorganic filling rope 7, and the insulating layer 9 is specifically a single-sided synthetic mica tape and is wrapped on the side part of the conductor 8;
More specifically, the insulating layer 9 is wrapped on the side part of the conductor 8, and during production, the four layers of continuous lapping and wrapping technology is adopted, the thickness of the single-sided synthetic mica tape is 0.14mm, and the lapping rate is 5% -10%;
The single-sided synthetic mica tape is characterized in that synthetic mica paper is used as a base material, glass fiber cloth is used as a single-sided reinforcing material, the materials are incombustible, and the single-sided synthetic mica tape has extremely low heat value when burned and good fire resistance.
Further, the inorganic filling rope 7 is specifically an alkali-free glass fiber filling rope and is filled at the side part of the insulating layer 9;
More specifically, the inorganic filling rope 7 and the insulating wire core are twisted together to form a wire core, the inorganic filling rope 7 has good flexibility and durability, a certain proportion of lubricating materials are filled in the filling rope, friction force between the ropes can be effectively reduced, durability and service life of the ropes can be effectively improved, the integrity of the ropes can be kept in flame without smoke generation, the integrity of a cable core is kept when the flame burns, and the internal structure of the cable is ensured to be compact and not loose when the cable is impacted or vibrated;
Meanwhile, certain gaps are formed among glass filaments after the cables are filled, the gaps form a plurality of heat dissipation channels, and heat generated during the operation of the cables and heat generated during the occurrence of fire can be conducted out through the channels.
Further, the protective layer 6 is specifically a double-layer single-sided synthetic mica tape, and is continuously wrapped on the side part of the inorganic filling rope 7;
More specifically, the single-sided synthetic mica tape takes synthetic mica paper as a base material, glass fiber cloth as a single-sided reinforcing material, has good fire resistance, adopts continuous lapping and wrapping, and has the thickness of 0.14mm and the lapping rate of 10% -20%.
Further, the isolation layer 5 is specifically an alkali-free glass fiber belt, and is continuously wrapped around the side part of the protection layer 6;
more specifically, in order to enhance fire resistance and protect an internal mica structure, an isolation layer 5 is arranged, the isolation layer 5 is wrapped by adopting a double-layer continuous lapping cover, the thickness of an alkali-free glass fiber belt is 0.2mm, the lapping cover rate is 10% -20%, the alkali-free glass fiber belt has good flame retardance on the cable and improves the flame retardance grade of the cable, the cable is prevented from being burnt, the glass fiber belt can keep the integrity of the glass fiber belt at a high temperature, and the fluffy state of the glass fiber belt can delay the heat transfer speed to the interior of the cable, so that the heat release amount is reduced;
Meanwhile, the mica tape plays a certain buffering role when being impacted, so that the mica structure is prevented from being directly impacted by the metal outer protective layer, and the integrity of the mica tape is ensured.
Further, the metal outer protective layer 1 is specifically an embossing welding copper protective sleeve;
More specifically, the embossing welding copper sheath can reduce the heat release amount of the cable, a closed embossing copper pipe is formed through procedures such as longitudinally wrapping welding embossing and the like, the embossing welding copper sheath can be used as a grounding electrode, the resistivity of a copper belt is less than or equal to 0.017593 Ω & mm & lt 2 & gt/m at 20 ℃, the embossing welding copper sheath can be used as a grounding electrode of the cable, meanwhile, the embossing welding copper sheath has a fire isolating function, a copper pipe cannot be burnt by general flame, the cable core is prevented from being directly contacted with flame, the direct flame combustion in the cable is avoided, the fire isolating function is realized, in addition, the toughness and the shock resistance of the cable are improved, the embossing structure enables the cable to keep the toughness of the cable, small-amplitude bending can rebound automatically, the shock force can be dispersed when the embossing structure is kept stable, the effect of physically protecting the conductor is realized, the cable is placed from being damaged by environmental factors, the cable can be ensured to stably run for a long time under extreme environments, the occurrence of electric power accidents can be avoided, the corrosion and erosion of external chemical substances can be avoided, and the electric power can be stably conveyed and used;
In addition, the thickness of the copper strip is 0.4-0.8 mm, the resistivity of the copper strip at 20 ℃ is less than or equal to 0.017593 Ω & mm < 2 >/m, and the embossing welding copper sheath has certain strength and rigidity, so that the structural strength of the cable can be enhanced, and the cable is prevented from being bent and damaged.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421046514.6U CN222028811U (en) | 2024-05-14 | 2024-05-14 | Flexible mineral insulation incombustible cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421046514.6U CN222028811U (en) | 2024-05-14 | 2024-05-14 | Flexible mineral insulation incombustible cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222028811U true CN222028811U (en) | 2024-11-19 |
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ID=93435173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421046514.6U Active CN222028811U (en) | 2024-05-14 | 2024-05-14 | Flexible mineral insulation incombustible cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222028811U (en) |
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- 2024-05-14 CN CN202421046514.6U patent/CN222028811U/en active Active
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