CN209947499U - 一种隔氧层结构的高阻燃低释放b1电缆 - Google Patents
一种隔氧层结构的高阻燃低释放b1电缆 Download PDFInfo
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- CN209947499U CN209947499U CN201920747301.9U CN201920747301U CN209947499U CN 209947499 U CN209947499 U CN 209947499U CN 201920747301 U CN201920747301 U CN 201920747301U CN 209947499 U CN209947499 U CN 209947499U
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- 239000003063 flame retardant Substances 0.000 title claims abstract description 59
- 239000000779 smoke Substances 0.000 claims abstract description 33
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound data:image/svg+xml;base64,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 data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0nMS4wJyBlbmNvZGluZz0naXNvLTg4NTktMSc/Pgo8c3ZnIHZlcnNpb249JzEuMScgYmFzZVByb2ZpbGU9J2Z1bGwnCiAgICAgICAgICAgICAgeG1sbnM9J2h0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnJwogICAgICAgICAgICAgICAgICAgICAgeG1sbnM6cmRraXQ9J2h0dHA6Ly93d3cucmRraXQub3JnL3htbCcKICAgICAgICAgICAgICAgICAgICAgIHhtbG5zOnhsaW5rPSdodHRwOi8vd3d3LnczLm9yZy8xOTk5L3hsaW5rJwogICAgICAgICAgICAgICAgICB4bWw6c3BhY2U9J3ByZXNlcnZlJwp3aWR0aD0nODVweCcgaGVpZ2h0PSc4NXB4JyB2aWV3Qm94PScwIDAgODUgODUnPgo8IS0tIEVORCBPRiBIRUFERVIgLS0+CjxyZWN0IHN0eWxlPSdvcGFjaXR5OjEuMDtmaWxsOiNGRkZGRkY7c3Ryb2tlOm5vbmUnIHdpZHRoPSc4NS4wJyBoZWlnaHQ9Jzg1LjAnIHg9JzAuMCcgeT0nMC4wJz4gPC9yZWN0Pgo8cGF0aCBjbGFzcz0nYm9uZC0wIGF0b20tMCBhdG9tLTEnIGQ9J00gMjEuNCw0Ny44IEwgNjIuOCw0Ny44JyBzdHlsZT0nZmlsbDpub25lO2ZpbGwtcnVsZTpldmVub2RkO3N0cm9rZTojRTg0MjM1O3N0cm9rZS13aWR0aDoxLjBweDtzdHJva2UtbGluZWNhcDpidXR0O3N0cm9rZS1saW5lam9pbjptaXRlcjtzdHJva2Utb3BhY2l0eToxJyAvPgo8cGF0aCBjbGFzcz0nYm9uZC0wIGF0b20tMCBhdG9tLTEnIGQ9J00gMjEuNCwzNi4yIEwgNjIuOCwzNi4yJyBzdHlsZT0nZmlsbDpub25lO2ZpbGwtcnVsZTpldmVub2RkO3N0cm9rZTojRTg0MjM1O3N0cm9rZS13aWR0aDoxLjBweDtzdHJva2UtbGluZWNhcDpidXR0O3N0cm9rZS1saW5lam9pbjptaXRlcjtzdHJva2Utb3BhY2l0eToxJyAvPgo8dGV4dCB4PSc2LjEnIHk9JzUzLjYnIGNsYXNzPSdhdG9tLTAnIHN0eWxlPSdmb250LXNpemU6MjNweDtmb250LXN0eWxlOm5vcm1hbDtmb250LXdlaWdodDpub3JtYWw7ZmlsbC1vcGFjaXR5OjE7c3Ryb2tlOm5vbmU7Zm9udC1mYW1pbHk6c2Fucy1zZXJpZjt0ZXh0LWFuY2hvcjpzdGFydDtmaWxsOiNFODQyMzUnID5PPC90ZXh0Pgo8dGV4dCB4PSc2NC4wJyB5PSc1My42JyBjbGFzcz0nYXRvbS0xJyBzdHlsZT0nZm9udC1zaXplOjIzcHg7Zm9udC1zdHlsZTpub3JtYWw7Zm9udC13ZWlnaHQ6bm9ybWFsO2ZpbGwtb3BhY2l0eToxO3N0cm9rZTpub25lO2ZvbnQtZmFtaWx5OnNhbnMtc2VyaWY7dGV4dC1hbmNob3I6c3RhcnQ7ZmlsbDojRTg0MjM1JyA+TzwvdGV4dD4KPC9zdmc+Cg== O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims abstract description 29
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 29
- 239000001301 oxygen Substances 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 17
- 239000004020 conductor Substances 0.000 claims abstract description 16
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- 239000003365 glass fiber Substances 0.000 claims abstract description 12
- 239000002965 rope Substances 0.000 claims abstract description 10
- 238000002485 combustion reaction Methods 0.000 claims description 17
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound 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Abstract
本实用新型公开了一种隔氧层结构的高阻燃低释放B1电缆，属于电线电缆技术领域。本实用新型的一种隔氧层结构的高阻燃低释放B1电缆，包括绝缘线芯、成缆、隔氧层、隔热层、外护套。其特征在于：所述绝缘线芯由导体、绝缘层构成；所述成缆包括成缆填充和成缆绕包，即将所有的绝缘线芯按照一定的方向一定的绞合节距绞合成一个缆芯整体，并在缆芯空隙加以高阻燃填充绳，在缆芯表面绕包高阻燃玻璃纤维包带。所述隔热层为高阻燃的玻璃纤维包带重叠绕包，所述外护套为低烟无卤阻燃聚烯烃护套材料。
Description
技术领域
本实用新型涉及电缆制造领域，为一种隔氧层结构的高阻燃低释放B1电缆的结构设计。
背景技术
从2014年开始，欧盟就计划把室内用的电力、通讯、控制电缆纳为建筑法规中，要求电缆的防火性能和有害物质的释放都必须符合欧盟标准。同时，国内公安部四川消防所联合标委会推出了GB 31247-2014，针对电缆及光缆进行燃烧性能分级。该标准与EN50575等同，对于国内市场冲击很大。通过考核火焰蔓延高度、热释放速率峰值、热释放总量、燃烧增长速度指数、产烟速率峰值、产烟总量、烟密度、垂直火焰蔓延高度等指标对电缆的燃烧性能进行综合评价。
新版《民用建筑电气设计规范》中规定：超高层建筑应选择燃烧性能B1级及以上、产烟毒性为t0级、燃烧滴落物/微粒等级为d0级的电线和电缆；一类高层建筑及人员密集的公共场所应选择燃烧性能B1级、产烟毒性为t1级、燃烧滴落物/微粒等级为d1级的电线电缆的要求。
国家知识产权局于2018年11月16日，公开了一件公开号为CN208111161U，名称为“一种无卤低烟阻燃B1级通信电缆” 的实用新型专利，本实用新型公开了一种无卤低烟阻燃B1级通信电缆，包括多根线芯和包裹在外侧的外包层；所述线芯由两根导体采用双根对绞缠绕而成，在导体的外侧包裹有高密度聚乙烯绝缘层；在两个导体的外侧包裹有一层镀锡丝编织分屏层，在镀锡丝编织分屏层的外侧挤压式挤包一层陶瓷化聚烯烃隔氧层；所述外包层从内向外依次挤包有陶瓷化聚烯烃填充内护层、镀锡丝编织总屏层、陶瓷化硅胶带绕包层和无卤低烟阻燃聚烯烃外护层。该实用新型结构复杂，因设置了多层挤包陶瓷化聚烯烃材料和绕包陶瓷化硅胶带，导致电缆外径增大，不符合通信电缆要求外径小，结构柔软，便于安装敷设的特点。
发明内容
本实用新型的目的是在于克服上述技术缺陷，本实用新型提供一种高阻燃低热值轨道交通用直流牵引电力电缆，该电缆的防火等级符合欧盟CPR认证法规EN 50575中的B2ca级要求。该电缆相对于传统的阻燃电缆属于安全电缆，不仅要考核电缆本体的耐燃烧程度，更要考核在燃烧过程中对环境的影响程度，通过考核电缆在燃烧过程中释放的热量、热释放速率、产烟总量、产烟速率、燃烧增长速率等方面来综合考核电缆的燃烧性能。
该电缆具有高阻燃低热释放的性能，能满足燃烧时火焰蔓延高度FS≤1.5m，热释放速率峰值HRR≤30kW，热释放总量THR1200≤15MJ，燃烧增长速率指数 FIGRA≤150W/s，产烟速率峰值SPR≤0.25m2/s，产烟总量TSP1200≤50m2，烟密度It≥60%，垂直火焰蔓延距离H≤425mm。
为了实现上述技术指标，本实用新型通过下述技术方案实现：一种隔氧层结构的高阻燃低释放B1电缆，包括绝缘线芯、成缆、隔氧层、隔热层、外护套。其特征在于：所述绝缘线芯由导体、绝缘层构成；所述成缆为所有绝缘线芯按照一定的方向一定的绞合节距绞合成一个缆芯整体，并在缆芯空隙加以高阻燃填充绳，在缆芯表面绕包高阻燃玻璃纤维包带。所述隔氧层为高阻燃的低烟无卤阻燃聚烯烃材料，所述隔热层为高阻燃的玻璃纤维包带重叠绕包，所述外护套为低烟无卤阻燃聚烯烃护套材料。
所述导体是由单根实芯铜丝或者多根铜丝绞合构成，其最外层绞合方向为左向，相邻层相反。
所述绝缘层为挤包交联聚乙烯。
所述绝缘线芯由导体、绝缘层构成。
所述成缆包括成缆填充和成缆绕包，即将所有绝缘线芯按照一定的方向、绞合节距进行绞合，所述绞合节距为缆芯直径的16～50倍。所述成缆填充为在缆芯空隙处加以阻燃高温填充绳，使缆芯圆整紧密，无空气流道，提高阻燃性能。所述阻燃高温填充绳的直径为φ1-12mm，氧指数OI≥35%，熔点≥260℃，所述成缆绕包为在缆芯外重叠绕包高阻燃玻璃纤维包带将绝缘线芯和阻燃高温填充绳扎紧，形成一个圆整紧密的缆芯整体；提高电缆阻燃性能、耐高温能力，同时也使得线芯更加稳定紧密地固定在一起，保证了电缆的稳定性和圆整度。
所述隔氧层步骤是指采用氧指数在36～40的高阻燃低烟无卤阻燃聚烯烃隔氧材料，在挤塑设备上采用挤管式模具，1.25：1～2.0：1压缩比的螺杆挤出在成缆后的缆芯表面，挤出厚度1.0mm～2.0mm，加工温度控制在80℃～165℃。
所述隔热层步骤为采用厚度为0.2mm，宽度18～80mm的高阻燃的玻璃纤维包带重叠绕包四层而成，搭盖率15%～30%。
所述外护套为挤包高阻燃的低烟无卤阻燃聚烯烃护套材料，该材料不仅能保证电缆在受到火焰冲击时，会迅速膨胀并烧结形成一层坚硬的壳体，借以保护电缆内部绝缘和可燃物，使电缆燃烧时内部温度不会太高，进而达到阻燃隔热耐火的功效。还能保证电缆在安装运行的耐机械性能、耐老化性能、防鼠防蚁性能。
实用新型与现有技术相比，所带来的有益的技术效果表现在：
1、电缆在受到火焰冲击时，外护套、隔氧层会迅速膨胀并烧结形成一层坚硬的壳体，借以保护电缆内部绝缘和可燃物，使电缆燃烧时内部温度不会太高，进而达到阻燃隔热的功效。
2、隔热层可以保证外部燃烧火焰不蔓延或者延迟蔓延到内部绝缘线芯，使电缆燃烧时内部温度不会太高，进而达到抑制电缆燃烧时热释放的速率及热释放的总量的功效。
3、该电缆具有高阻燃低热释放的性能，能满足燃烧时火焰蔓延高度FS≤1.5m，热释放速率峰值HRR≤30kW，热释放总量THR1200≤15MJ，燃烧增长速率指数FIGRA≤150W/s，产烟速率峰值SPR≤0.25m2/s，产烟总量TSP1200≤50m2，烟密度It≥60%，垂直火焰蔓延距离H≤425mm。
附图说明
图1为本实用新型的截面结构示意图。
附图1标记：1、导体；2、绝缘层； 3、成缆；4、隔氧层；5、隔热层；6、外护套。
具体实施方式
实施例1
作为本实用新型一较佳实施例，参照说明书附图1：
所示的一种隔氧层结构的高阻燃低释放B1电缆，主要由导体、绝缘层、成缆、隔氧层、隔热层、外护套组成。所述导体为标称截面积150mm2的铜导体绞合构成；所述绝缘层为挤包交联聚乙烯构成，绝缘标称厚度1.4mm；以上构成绝缘线芯。所述成缆是将3根绝缘线芯按照右向、绞合节距为缆芯直径的50倍进行绞合，并在缆芯空隙处填充φ8mm的阻燃高温填充绳，在缆芯外重叠绕包宽度为60mm，厚度为0.2mm的高阻燃玻璃纤维包带。所述隔氧层为挤包氧指数为40的低烟无卤阻燃聚烯烃隔氧层材料；挤出厚度1.4mm,所述隔热层为采用厚度为0.2mm，宽度为80mm的高阻燃玻璃纤维包带重叠绕包四层；所述外护套层为挤包低烟无卤阻燃聚烯烃护套材料构成，护套标称厚度2.2mm。该工艺生产的产品做热释放燃烧试验，所测得火焰蔓延高度FS为0.68m，热释放速率峰值HRR为17.91kW，热释放总量THR1200为9.63MJ，燃烧增长速率指数 FIGRA为52.98W/s，产烟速率峰值SPR为0.044m2/s，产烟总量TSP1200为17.7m2，烟密度It为87%，垂直火焰蔓延距离H为312mm。
实施例2
作为本实用新型又一较佳实施例，参照说明书附图1：
所示的一种隔氧层结构的高阻燃低释放B1电缆，主要由导体、绝缘层、成缆填充、成缆绕包、隔氧层、隔热层、外护套组成。所述导体为标称截面积2.5mm2的单根实芯铜丝构成；所述绝缘层为挤包交联聚乙烯构成，绝缘标称厚度0.7mm；以上构成绝缘线芯。所述成缆是将7根绝缘线芯按照右向、绞合节距为缆芯直径的20倍进行绞合，并在缆芯空隙处填充φ1mm的阻燃高温填充绳，在缆芯外重叠绕包宽度为25mm，厚度为0.2mm的高阻燃玻璃纤维包带。所述隔氧层为挤包氧指数为40的低烟无卤阻燃聚烯烃隔氧层材料；挤出厚度1.0mm,所述隔热层为采用厚度为0.2mm，宽度为30mm的高阻燃玻璃纤维包带重叠绕包四层；所述外护套层为挤包低烟无卤阻燃聚烯烃护套材料构成，护套标称厚度1.5mm。该工艺生产的产品做热释放燃烧试验，所测得火焰蔓延高度FS为0.72m，热释放速率峰值HRR为12.5kW，热释放总量THR1200为10.12MJ，燃烧增长速率指数FIGRA为65.2W/s，产烟速率峰值SPR为0.025m2/s，产烟总量TSP1200为21.5m2，烟密度It为91%，垂直火焰蔓延距离H为306mm。
Claims (4)
1.一种隔氧层结构的高阻燃低释放B1电缆，包括绝缘线芯、成缆、隔氧层、隔热层、外护套，其特征在于：所述绝缘线芯由导体（1）、绝缘层（2）构成；所述导体（1）是由单根实芯铜丝或者多根铜丝绞合构成，其最外层绞合方向为左向，相邻层相反；所述绝缘层（2）为挤包交联聚乙烯的单层绝缘；所述成缆（3）包括成缆填充和成缆绕包，即将所有绝缘线芯按照右向及缆芯直径的16～50倍的绞合节距进行绞合；所述成缆填充为在缆芯空隙处加以阻燃高温填充绳，使缆芯圆整紧密，无空气流道，提高阻燃性能；所述阻燃高温填充绳的直径为φ1-12mm，氧指数OI≥35%，熔点≥260℃，所述成缆绕包为在缆芯外重叠绕包高阻燃玻璃纤维包带将绝缘线芯和阻燃高温填充绳扎紧，形成一个圆整紧密的缆芯整体；提高电缆阻燃性能、耐高温能力，同时也使得线芯更加稳定紧密地固定在一起，保证了电缆的稳定性和圆整度。
2.如权利要求1所述的一种隔氧层结构的高阻燃低释放B1电缆，其特征在于：所述隔氧层（4）是指采用氧指数在36～40的高阻燃低烟无卤阻燃聚烯烃隔氧材料。
3.如权利要求1所述的一种隔氧层结构的高阻燃低释放B1电缆，其特征在于：所述隔热层（5）步骤为采用高阻燃的玻璃纤维包带重叠绕包四层而成，搭盖率15%～30%。
4.如权利要求1所述的一种隔氧层结构的高阻燃低释放B1电缆，其特征在于：所述外护套（6）为挤包高阻燃的低烟无卤阻燃聚烯烃护套材料，该材料不仅能保证电缆在受到火焰冲击时，会迅速膨胀并烧结形成一层坚硬的壳体，借以保护电缆内部绝缘和可燃物，使电缆燃烧时内部温度不会太高，进而达到阻燃隔热耐火的功效，还能保证电缆在安装运行的耐机械性能、耐老化性能、防鼠防蚁性能。
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| CN113571251A (zh) * | 2021-07-28 | 2021-10-29 | 安徽怡和电缆有限公司 | 一种无卤低烟隔氧层阻燃电力电缆 |
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| CN113571251A (zh) * | 2021-07-28 | 2021-10-29 | 安徽怡和电缆有限公司 | 一种无卤低烟隔氧层阻燃电力电缆 |
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