WO2022257682A1 - 一种现代建筑用矿物填充阻燃防火隔离型特种电缆 - Google Patents

一种现代建筑用矿物填充阻燃防火隔离型特种电缆 Download PDF

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WO2022257682A1
WO2022257682A1 PCT/CN2022/091889 CN2022091889W WO2022257682A1 WO 2022257682 A1 WO2022257682 A1 WO 2022257682A1 CN 2022091889 W CN2022091889 W CN 2022091889W WO 2022257682 A1 WO2022257682 A1 WO 2022257682A1
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wall
layer
retardant
cable
flame
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PCT/CN2022/091889
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English (en)
French (fr)
Inventor
翁中宇
闵宏兵
王仕忠
乔宝星
鲁永伟
姜志强
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江苏恒辉电气有限公司
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Publication of WO2022257682A1 publication Critical patent/WO2022257682A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/22—Metal wires or tapes, e.g. made of steel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame

Definitions

  • the utility model relates to the technical field of special cables, in particular to a mineral-filled, flame-retardant, fireproof and isolated special cable for modern buildings.
  • This utility model is to provide a kind of mineral-filled flame-retardant and fire-proof isolation type special cable for modern buildings, so as to solve the problems raised in the above-mentioned background technology.
  • a mineral-filled flame-retardant and fire-proof isolation type special cable for modern buildings including a central reinforcement, the outer wall of the central reinforcement is provided with multiple sets of conductor units in an annular array, multiple sets
  • the outer wall of the conductor unit is commonly wrapped with a high flame-retardant nylon fiber tape wrapping layer, and the inner wall of the high flame-retardant nylon fiber tape wrapping layer, the outer wall of the conductor unit and the outer wall of the central reinforcement are arranged as a filler layer.
  • the outer wall of the flame-retardant nylon fiber tape is wrapped with a halogen-free low-smoke polyolefin outer sheath layer, and the outer wall of the halogen-free low-smoke polyolefin outer sheath layer is wrapped with an interlocking armor fireproof layer.
  • the conductor unit includes a ceramic silica gel insulating layer, and the inner cavity of the ceramic silica gel insulating layer is wrapped with a metal alloy sleeve, and the inner cavity of the metal alloy sleeve is wrapped with an inorganic mineral insulating layer, and the inner cavity of the inorganic mineral insulating layer is The cavity is wrapped with anaerobic toughening annealed pre-annealed twisted stranded conductors.
  • the annular array on the outer wall of the central reinforcement is provided with multiple sets of arc-shaped limiting grooves that cooperate with the conductor units, and the annular array on the outer wall of the central reinforcement is provided with multiple sets of heat shields, and the multiple sets of heat shields are additionally One end is connected with the high flame-retardant nylon fiber tape around the inner wall of the cladding, and the heat insulation board is located between two adjacent groups of conductor units.
  • the high flame-retardant nylon fiber tape is integrally formed around the outer wall of the cladding in an annular array with multiple sets of convex portions with arc-shaped vertical sections, and the inner wall of the outer sheath layer of halogen-free low-smoke polyolefin is provided with multiple sets of ring-shaped arrays with The grooves are matched with the protrusions, and the high flame-retardant nylon fiber tape between the adjacent two groups of protrusions forms an air separation layer between the outer wall of the wrapping layer and the inner wall of the halogen-free low-smoke polyolefin outer sheath layer.
  • the number of the conductor units is four groups, and the four groups of conductor units are distributed in an annular array on the outer wall of the central reinforcement member.
  • tensile steel wires are embedded in the center of the central reinforcement.
  • the beneficial effect of the utility model is: the utility model adopts the anaerobic toughening annealing pre-annealed twisted conductor, which is completed through the circular compacting process, the surface is smooth and round, the electrical conductivity is superior, and the The corrosion resistance of the cable is improved, while ensuring that the cable maintains excellent electrical properties during operation.
  • the inorganic mineral insulating layer set on its outer wall is made of synthetic calcined mica tape (fluorine phlogopite tape) with a large safety margin, which is non-toxic and non-toxic after burning.
  • Smokeless in addition to the characteristics of natural mica tape, that is, small expansion coefficient, high dielectric strength, high resistivity, and uniform dielectric constant, it also has the characteristics of high heat resistance, which fully meets the requirements of 950-1000 ° C.
  • the insulating layer of ceramic silica gel layer is set for secondary insulation protection, which can isolate the transmission and spread of flame and heat to the inside of the cable, effectively protect the electrical performance of the insulating core inside the ceramic layer, and ensure that the line can work normally under fire conditions.
  • the material extrusion filling method improves the overall oxygen barrier function of the cable, and fills the halogen-free flame-retardant material containing a large amount of hydrated oxides into the gaps in the wire core.
  • the temperature of the surface is wrapped with high flame-retardant nylon fiber tape.
  • the filler has the characteristics of high temperature resistance, super softness, light density, and high strength. It does not contain harmful substances such as halogen, asbestos, and glass fiber. less volatile matter, non-toxic, and meet the requirements of environmental protection and flame retardancy.
  • the outer sheath layer of halogen-free low-smoke polyolefin is used.
  • the halogen-free flame-retardant chemical composition containing hydrated oxides is used to achieve heat insulation, cooling, and less smoke And the effect of low toxicity, and has a higher oxygen index
  • the interlocking armored fireproof layer can play a role in preventing the flame from spreading to the inside of the cable, and the convex part of the outer wall of the cladding is wrapped by a high flame-retardant nylon fiber tape.
  • the outer sheath layer of low-smoke halogenated polyolefin cooperates to form multiple sets of air separation layers, which can prevent the external heat from being transferred to the inside of the cable and damage the internal structure when there is a fire around the cable.
  • a tensile steel wire is added to bear the tensile force on the cable
  • the tensile performance of the cable is improved through the tensile steel wire, so that the overall flame retardancy of the cable is high, and it also has the characteristics of high temperature resistance, radiation resistance, aging resistance, corrosion resistance, anti-electromagnetic interference, and excellent electrical conductivity. .
  • Fig. 1 is the perspective view of the cutaway structure of the utility model
  • Fig. 2 is an enlarged view of structure A in Fig. 1 of the present utility model.
  • the utility model provides a technical solution: a mineral-filled flame-retardant and fire-resistant isolation type special cable for modern buildings, including a central reinforcement 1, which can be made of polypropylene, and the polypropylene Propylene has good chemical resistance, heat resistance, electrical insulation, and high-strength mechanical properties.
  • a central reinforcement 1 which can be made of polypropylene
  • the polypropylene Propylene has good chemical resistance, heat resistance, electrical insulation, and high-strength mechanical properties.
  • the fiber tape wraps around the cladding 4.
  • the filler has the characteristics of high temperature resistance, super softness, light density, and high strength. It does not contain harmful substances such as halogens, asbestos, and glass fibers.
  • the high flame retardant nylon fiber tape is set as a filler layer 3 around the inner wall of the cladding layer 4, the outer wall of the conductor unit 2 and the outer wall of the central reinforcement 1, and the filler layer 3 is filled with mineral extrusion.
  • the method of mineral extrusion filling improves the overall oxygen barrier function of the cable, and fills the gap of the wire core with a halogen-free flame-retardant material containing a large amount of hydrated oxides.
  • the hydrated oxides burn, they absorb a large amount of heat in the surrounding air and reduce The temperature of the cable surface; the released water molecules evaporate and can also absorb a large amount of heat, and the formed water vapor can dilute the concentration of oxygen around the cable, and it begins to harden at 350°C and above under flame or flameless conditions, up to 3000°C . As the temperature rises, it is quickly fired into a complete ceramic-like hard shell. The longer the ablation time, the higher the temperature, the harder and firmer the shell.
  • the low-smoke polyolefin outer sheath layer 7 adopts a halogen-free low-smoke polyolefin outer sheath layer, which contains a halogen-free flame-retardant chemical composition of a hydrated oxide to achieve heat insulation, cooling, less smoke and low toxicity. effect, and has a higher oxygen index, the outer wall of the halogen-free low-smoke polyolefin sheath layer 7 is wrapped with an interlocking armored fireproof layer 8, and the interlocked armored fireproof layer can prevent the flame from spreading to the inside of the cable role.
  • the conductor unit 2 includes a ceramic silica gel insulating layer 21, and the ceramic silica gel insulating layer 21 is used outside the metal alloy sleeve 22 for secondary insulation protection.
  • the carrier is compounded by adding inorganic nano-silica powder refractory filler, ceramic additives and various auxiliary agents. After kneading and mixing, it is made into a rubber material that can be molded or extruded.
  • the silica gel matrix mainly guarantees the mechanical properties and processability of the composite material; ceramic additives and refractory fillers ensure that the silica gel matrix does not fall off during combustion.
  • Inorganic mineral insulating layer 23 is made of synthetic calcined mica tape (fluorine phlogopite mica tape), which uses fluoride ions instead of hydrocarbon groups, does not contain crystal water, has a melting point of 1375°C, has a large safety margin, and is non-toxic and smokeless after burning.
  • the inner cavity is wrapped with anaerobic toughening annealing pre-annealing twisted stranded conductor 24, anaerobic toughening annealing pre-annealed twisted stranded conductor 24 is a plurality of strands, and each strand is made of N anaerobic toughening annealed metal monofilaments
  • the composition is made of anaerobic toughening annealed pre-annealed twisted stranded conductor, which is completed by circular compaction process, the surface is smooth and round, and the conductivity is excellent.
  • the outer diameter, weight, and bending radius of the cable should be as small as possible. It greatly improves the corrosion resistance of the cable, and at the same time ensures that the cable maintains excellent electrical properties during operation.
  • the circular array on the outer wall of the central reinforcement 1 is provided with multiple sets of arc-shaped limiting grooves that cooperate with the conductor unit 2, which play the role of limiting.
  • Heat plate 10 so that the heat generated by conductor unit 2 will not interfere with each other.
  • Heat shield 10 is widely used in this field, and will not be described in detail here.
  • the other ends of multiple sets of heat shield 10 are wrapped with high flame-retardant nylon fiber tape
  • the inner walls of the cladding 4 are connected, and the heat insulation board 10 is located between two adjacent groups of conductor units 2;
  • the number of conductor units 2 is four groups, and the four groups of conductor units 2 are arranged in a circular array on the outer wall of the circumference of the central reinforcement member 1 .
  • the high-flame-retardant nylon fiber tape is integrally formed around the outer wall of the cladding layer 4 in an annular array, and there are multiple groups of convex parts 5 with arc-shaped vertical sections, and the inner wall of the outer sheath layer 7 of halogen-free low-smoke polyolefin is formed in an annular array.
  • the separation layer 6 is provided with an air separation layer, which can prevent external heat from being transmitted to the inside of the cable and damage the internal structure when a fire occurs around the cable.
  • Example 2 Compared with Example 1, in Example 2, multiple groups of air separation layers 6 are formed by coordinating the convex portion 5 of the outer wall of the cladding layer 4 with the high flame-retardant nylon fiber tape and the outer sheath layer 7 of the halogen-free low-smoke polyolefin, which can prevent When a fire occurs around the cable, it prevents the external heat from being transferred to the inside of the cable and damages the internal structure.
  • a tensile steel wire 9 is embedded in the center of the central reinforcement 1 , and when the cable is subjected to tensile force, the tensile steel wire 9 bears it to improve the tensile performance of the cable.
  • embodiment 3 is provided with a tensile steel wire 9, and when the cable is subjected to tensile force, the tensile steel wire 9 bears it, thereby improving the tensile performance of the cable.

Abstract

一种现代建筑用矿物填充阻燃防火隔离型特种电缆，属于特种电缆技术领域。所述电缆包括中心加强件（1），所述中心加强件（1）外壁环形阵列设置有多组导体单元（2），多组所述导体单元（2）外壁共同绕包有高阻燃尼龙纤维带绕包层（4），且高阻燃尼龙纤维带绕包层（4）内壁、导体单元（2）外壁和中心加强件（1）外壁之间设置有填充料层（3）。所述电缆采用无氧韧炼退火预退扭绞合导体（24），提高了电缆的抗腐蚀性能，同时确保电缆在运行过程中保持优异的电性能，在其外壁设置的无机矿物绝缘层（23），具有耐热等级高的特性，还设置有陶瓷硅胶层绝缘层（21）进行二次绝缘防护，能隔绝火焰和热量向电缆内部传递和蔓延，有效地保护陶瓷层内部绝缘线芯的电气性能，保障线路在火灾条件下能正常工作。

Description

一种现代建筑用矿物填充阻燃防火隔离型特种电缆 技术领域
本实用新型涉及特种电缆技术领域，具体为一种现代建筑用矿物填充阻燃防火隔离型特种电缆。
背景技术
随着现代城市高层建筑、智能小区、交通枢纽、大型商超、等人员密集场合越来越多，这些场所要求阻燃防火电缆不仅具有一般的阻燃防火功能，还要具有低烟无卤、高透光率及低毒的特性。因为在公共场所火灾中，80％的人员伤亡是因为吸入了燃烧时产生的大量烟雾或有毒气体造成的，而烟雾也不利于人员的疏散。鉴于以上现场要求及电力工程电缆设计标准中的条款“电缆防火与阻止延燃”的规定，隔离型矿物绝缘阻燃防火电缆应运而生。现有的现代建筑用矿物填充阻燃防火隔离型特种电缆其阻燃性能差，当遇到明火时，就会发生的快速的燃烧，以至于严重的造成电缆的损坏，大大的降低了电缆的使用寿命。为此，我们提出一种现代建筑用矿物填充阻燃防火隔离型特种电缆。
实用新型内容
本实用新型的目的在于提供一种现代建筑用矿物填充阻燃防火隔离型特种电缆，以解决上述背景技术中提出的问题。
为实现上述目的，本实用新型提供如下技术方案：一种现代建筑用矿物填充阻燃防火隔离型特种电缆，包括中心加强件，所述中心加强件外壁环形阵列设置有多组导体单元，多组所述导体单元外壁共同绕包有高阻燃尼龙纤维带绕包层，且高阻燃尼龙纤维带绕包层内壁、导体单元外壁和中心加强件外壁之间设置为填充料层，所述高阻燃尼龙纤维带绕包层外壁绕包有无卤低烟聚烯烃外护套层，所述无卤低烟聚烯烃外护套层外壁绕包有联锁铠装防火层。
进一步地，所述导体单元包括陶瓷硅胶层绝缘层，且陶瓷硅胶层绝缘层内腔绕包有金属合金套，所述金属合金套内腔绕包有无机矿物绝缘层，且无机矿物绝缘层内腔绕包有无氧韧炼退火预退扭绞合导体。
进一步地，所述中心加强件外壁环形阵列开设有多组与导体单元配合的弧形限位槽，所述中心加强件外壁环形阵列设置有多组隔热板，多组所述隔热板另一端与高阻燃尼龙纤维带绕包层内壁连接，所述隔热板处于相邻两组导体单元之间。
进一步地，所述高阻燃尼龙纤维带绕包层外壁环形阵列一体成型有多组竖截面呈弧形的凸部，且无卤低烟聚烯烃外护套层内壁环形阵列开设有多组与凸部配合的凹槽，相邻两组所述凸部之间的高阻燃尼龙纤维带绕包层外壁与无卤低烟聚烯烃外护套层内壁之间形成空气分隔层。
进一步地，所述导体单元个数为四组，且四组导体单元呈环形阵列分布设置在中心加强件圆周外壁。
进一步地，所述中心加强件的中央嵌入设置有抗拉钢线。
与现有技术相比，本实用新型的有益效果是：本实用新型采用无氧韧炼退火预退扭绞合导体，通过圆形紧压工艺完成，表面光滑圆整，导电性能优越，且提高了电缆的抗腐蚀性能，同时确保电缆在运行过程中保持优异的电性能，在其外壁设置的无机矿物绝缘层采用合成煅烧云母带(氟金云母带)安全裕度大，燃烧后无毒、无烟，除了具有天然云母带的特性，即膨胀系数小、介电强度大、电阻率高、介电常数均匀以外，还具有耐热等级高的特性，完全满足950～1000℃的要求，还设置有陶瓷硅胶层绝缘层进行二次绝缘防护，能隔绝火焰和热量向电缆内部传递和蔓延，有效地保护陶瓷层内部绝缘线芯的电气性能，保障线路在火灾条件下能正常工作，采用矿物质挤制填充的方法，提升了电缆的整体隔氧功能，将含有大量水合氧化物的无卤阻燃材料填充到线芯缝隙中，水合氧化物燃烧时吸收周围空气中大量的热量，降低 电缆表面的温度，采用高阻燃尼龙纤维带绕包层，该填充料具有耐高温、超柔软、密度轻、强度大等特点，不含卤素、石棉、玻纤等有害物质，燃烧时发烟量少，挥发物无毒性，符合环保阻燃的要求，采用无卤低烟聚烯烃外护套层，该含有水合氧化物的无卤阻燃化学成分，以达到隔热、降温、发烟量少及低毒的效果，并有较高的氧指数，采用联锁铠装防火层，可以起到阻挡火焰向电缆内部蔓延的作用，通过高阻燃尼龙纤维带绕包层外壁的凸部与无卤低烟聚烯烃外护套层配合形成有多组空气分隔层，可防止电缆周围失火时防止外部的热量传递到电缆的内部使得内部结构损坏，增设有抗拉钢线，在该电缆承受拉力时，通过抗拉钢线承受，提高该电缆的抗拉性能，使得该电缆整体阻燃性能高，且还具有耐高温、耐辐射、耐老化、耐腐蚀、抗电磁干扰、导电性能优越等特性。
附图说明
图1为本实用新型剖视结构立体图；
图2为本实用新型图1中A结构放大图。
图中：1、中心加强件；2、导体单元；21、陶瓷硅胶层绝缘层；22、金属合金套；23、无机矿物绝缘层；24、无氧韧炼退火预退扭绞合导体；3、填充料层；4、高阻燃尼龙纤维带绕包层；5、凸部；6、空气分隔层；7、无卤低烟聚烯烃外护套层；8、联锁铠装防火层；9、抗拉钢线；10、隔热板。
具体实施方式
下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本实用新型一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本实用新型保护的范围。
实施例1
请参阅图1-2，本实用新型提供一种技术方案：一种现代建筑用矿物填充阻燃防火隔离型特种电缆，包括中心加强件1，中心加强件1具体可采用聚丙烯制成，聚丙烯具备良好的耐化学性、耐热性、电绝缘性、高强度机械性能，中心加强件1外壁环形阵列设置有多组导体单元2，多组导体单元2外壁共同绕包有高阻燃尼龙纤维带绕包层4，该填充料具有耐高温、超柔软、密度轻、强度大等特点，不含卤素、石棉、玻纤等有害物质，燃烧时发烟量少，挥发物无毒性，符合环保阻燃的要求，且高阻燃尼龙纤维带绕包层4内壁、导体单元2外壁和中心加强件1外壁之间设置为填充料层3，填充料层3为矿物质挤制填充，采用矿物质挤制填充的方法，提升了电缆的整体隔氧功能，将含有大量水合氧化物的无卤阻燃材料填充到线芯缝隙中，水合氧化物燃烧时吸收周围空气中大量的热量，降低电缆表面的温度；释放出的水分子蒸发也可以吸收大量的热量，形成的水蒸气可以冲淡电缆周围氧气的浓度，在350℃及以上火焰或无焰条件下开始变硬，最高可达3000℃。随着温度升高，迅速被烧成完整的陶瓷状坚硬壳体，烧蚀时间越长，温度越高，壳体越坚硬牢固，高阻燃尼龙纤维带绕包层4外壁绕包有无卤低烟聚烯烃外护套层7，采用无卤低烟聚烯烃外护套层，该含有水合氧化物的无卤阻燃化学成分，以达到隔热、降温、发烟量少及低毒的效果，并有较高的氧指数，无卤低烟聚烯烃外护套层7外壁绕包有联锁铠装防火层8，采用联锁铠装防火层，可以起到阻挡火焰向电缆内部蔓延的作用。
如图1-2所示：导体单元2包括陶瓷硅胶层绝缘层21，在金属合金套22外采用陶瓷硅胶层绝缘层21进行二次绝缘防护，硅瓷胶材料是以硅瓷胶为基料及载体加入无机纳米硅粉状耐火填充剂、陶瓷化添加剂以及各种助剂复合而成，经过捏合、混炼，制成可供模压或挤出成型的胶料。其中，硅瓷胶基体主要保障复合材料的力学性能及工艺加工性能；陶瓷化添加剂和耐火填料保证硅瓷胶基体在燃烧过程中不脱落。当火灾发生时，高温的火焰使硅瓷胶 燃烧后的残余灰烬形成一层具有一定力学强度的绝缘耐火陶瓷层，该陶瓷层能隔绝火焰和热量向电缆内部传递和蔓延，有效地保护陶瓷层内部绝缘线芯的电气性能，保障线路在火灾条件下能正常工作，且陶瓷硅胶层绝缘层21内腔绕包有金属合金套22，金属合金套22内腔绕包有无机矿物绝缘层23，无机矿物绝缘层23采用合成煅烧云母带(氟金云母带)，该云母带是以氟离子代替烃基，不含结晶水，熔点1375℃，安全裕度大，燃烧后无毒、无烟，除了具有天然云母带的特性，即膨胀系数小、介电强度大、电阻率高、介电常数均匀以外，还具有耐热等级高的特性，完全满足950～1000℃的要求，且无机矿物绝缘层23内腔绕包有无氧韧炼退火预退扭绞合导体24，无氧韧炼退火预退扭绞合导体24为多根，每根绞合由N根无氧韧炼退火金属单丝组成，采用无氧韧炼退火预退扭绞合导体，通过圆形紧压工艺完成，表面光滑圆整，导电性能优越。在保证性能的基础上电缆的外径、重量、弯曲半径等尽量小。大大提高了电缆的抗腐蚀性能，同时确保电缆在运行过程中保持优异的电性能。
如图1-2所示：中心加强件1外壁环形阵列开设有多组与导体单元2配合的弧形限位槽，起到限位的作用，中心加强件1外壁环形阵列设置有多组隔热板10，使得导体单元2产生的热量不会相互干涉，隔热板10在本领域应用广泛，在此不另做详述，多组隔热板10另一端与高阻燃尼龙纤维带绕包层4内壁连接，隔热板10处于相邻两组导体单元2之间；
如图1-2所示：导体单元2个数为四组，且四组导体单元2呈环形阵列分布设置在中心加强件1圆周外壁。
实施例2
如图1所示：高阻燃尼龙纤维带绕包层4外壁环形阵列一体成型有多组竖截面呈弧形的凸部5，且无卤低烟聚烯烃外护套层7内壁环形阵列开设有多组与凸部5配合的凹槽，相邻两组凸部5之间的高阻燃尼龙纤维带绕包层4 外壁与无卤低烟聚烯烃外护套层7内壁之间形成空气分隔层6，设置有空气分隔层，可防止电缆周围失火时防止外部的热量传递到电缆的内部使得内部结构损坏。
其余结构与实施例1相同
相比于实施例1，实施例2通过高阻燃尼龙纤维带绕包层4外壁的凸部5与无卤低烟聚烯烃外护套层7配合形成有多组空气分隔层6，可防止电缆周围失火时防止外部的热量传递到电缆的内部使得内部结构损坏。
实施例3
如图1所示：中心加强件1的中央嵌入设置有抗拉钢线9，在该电缆承受拉力时，通过抗拉钢线9承受，提高该电缆的抗拉性能。
其余结构与实施例2相同
相比于实施例2，实施例3增设有抗拉钢线9，在该电缆承受拉力时，通过抗拉钢线9承受，提高该电缆的抗拉性能。
尽管已经示出和描述了本实用新型的实施例，对于本领域的普通技术人员而言，可以理解在不脱离本实用新型的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型，本实用新型的范围由所附权利要求及其等同物限定。

Claims (6)

  1. 一种现代建筑用矿物填充阻燃防火隔离型特种电缆，包括中心加强件(1)，其特征在于：所述中心加强件(1)外壁环形阵列设置有多组导体单元(2)，多组所述导体单元(2)外壁共同绕包有高阻燃尼龙纤维带绕包层(4)，且高阻燃尼龙纤维带绕包层(4)内壁、导体单元(2)外壁和中心加强件(1)外壁之间设置为填充料层(3)，所述高阻燃尼龙纤维带绕包层(4)外壁绕包有无卤低烟聚烯烃外护套层(7)，所述无卤低烟聚烯烃外护套层(7)外壁绕包有联锁铠装防火层(8)。
  2. 根据权利要求1所述的一种现代建筑用矿物填充阻燃防火隔离型特种电缆，其特征在于：所述导体单元(2)包括陶瓷硅胶层绝缘层(21)，且陶瓷硅胶层绝缘层(21)内腔绕包有金属合金套(22)，所述金属合金套(22)内腔绕包有无机矿物绝缘层(23)，且无机矿物绝缘层(23)内腔绕包有无氧韧炼退火预退扭绞合导体(24)。
  3. 根据权利要求1所述的一种现代建筑用矿物填充阻燃防火隔离型特种电缆，其特征在于：所述中心加强件(1)外壁环形阵列开设有多组与导体单元(2)配合的弧形限位槽，所述中心加强件(1)外壁环形阵列设置有多组隔热板(10)，多组所述隔热板(10)另一端与高阻燃尼龙纤维带绕包层(4)内壁连接，所述隔热板(10)处于相邻两组导体单元(2)之间。
  4. 根据权利要求1所述的一种现代建筑用矿物填充阻燃防火隔离型特种电缆，其特征在于：所述高阻燃尼龙纤维带绕包层(4)外壁环形阵列一体成型有多组竖截面呈弧形的凸部(5)，且无卤低烟聚烯烃外护套层(7)内壁环形阵列开设有多组与凸部(5)配合的凹槽，相邻两组所述凸部(5)之间的高阻燃尼龙纤维带绕包层(4)外壁与无卤低烟聚烯烃外护套层(7)内壁之间形成空气分隔层(6)。
  5. 根据权利要求1所述的一种现代建筑用矿物填充阻燃防火隔离型特种电缆，其特征在于：所述导体单元(2)个数为四组，且四组导体单元(2) 呈环形阵列分布设置在中心加强件(1)圆周外壁。
  6. 根据权利要求1所述的一种现代建筑用矿物填充阻燃防火隔离型特种电缆，其特征在于：所述中心加强件(1)的中央嵌入设置有抗拉钢线(9)。
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