CN202076045U - 中压耐火电缆 - Google Patents
中压耐火电缆 Download PDFInfo
- Publication number
- CN202076045U CN202076045U CN 201120193504 CN201120193504U CN202076045U CN 202076045 U CN202076045 U CN 202076045U CN 201120193504 CN201120193504 CN 201120193504 CN 201120193504 U CN201120193504 U CN 201120193504U CN 202076045 U CN202076045 U CN 202076045U
- Authority
- CN
- China
- Prior art keywords
- layer
- fire
- cable
- flame retardant
- fireproof
- 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.)
- Expired - Lifetime
Links
- 238000009413 insulation Methods 0.000 claims abstract description 42
- 239000004020 conductor Substances 0.000 claims abstract description 30
- 239000002184 metal Substances 0.000 claims abstract description 20
- 229910052751 metal Inorganic materials 0.000 claims abstract description 20
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 19
- 238000003825 pressing Methods 0.000 claims abstract description 8
- 229920000098 polyolefin Polymers 0.000 claims abstract description 7
- 239000003063 flame retardant Substances 0.000 claims description 58
- 239000011248 coating agent Substances 0.000 claims description 43
- 238000000576 coating method Methods 0.000 claims description 43
- 239000003365 glass fiber Substances 0.000 claims description 13
- 239000000945 filler Substances 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 12
- 229910052736 halogen Inorganic materials 0.000 claims description 11
- 150000002367 halogens Chemical class 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 11
- 239000000779 smoke Substances 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound 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- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 238000005755 formation reaction Methods 0.000 claims description 5
- -1 oversheath (13) Substances 0.000 claims description 2
- 239000007787 solid Substances 0.000 abstract description 7
- 238000002485 combustion reaction Methods 0.000 abstract description 6
- MYMOFIZGZYHOMD-UHFFFAOYSA-N oxygen Chemical compound data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 abstract description 5
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Abstract
本实用新型公开了一种中压耐火电缆，属于电力电缆技术领域。本实用新型目的是提供一种能在有氧、高温的燃烧环境下不易损坏、耐火性好的中压耐火电缆。本实用新型技术方案：中压耐火电缆，包括导体（1），导体上依次挤包导体屏蔽层（2）、绝缘层（3）、绝缘屏蔽层（4），绝缘屏蔽层（4）外依次设有金属屏蔽层（5）、隔热层（9）、耐火层、外护套（13），耐火层是由陶瓷化硅橡胶的内耐火层（10）和结壳型聚烯烃的外耐火层（11）构成的组合耐火层。采用上述技术方案后，本实用新型解决类似陶瓷状固体耐火隔热层在有氧、高温的燃烧环境下易损坏，对内部的电缆保护不足的技术问题，提高中压耐火电缆的耐火性能。
Description
中压耐火电缆
技术领域
[0001] 本实用新型涉及一种电力电缆，特别涉及一种中压耐火电缆，属于电力电缆技术领域。
背景技术
[0002] 随着中国经济的发展，城市内的供电系统的电压逐渐升高。高层、特大型高层建筑物如果采用0.6/lkV低压配电，其电缆用量和工作量巨大。为解决实际的供电难题，高层、 特大型高层等建筑物开始采用中压供电（6kV〜35kV)。其对中压供电电缆要求的主要性能：在燃烧情况下，能够保证一段时间地正常供电。
[0003] 中国专利CN101236801A公开一种耐火电缆，其在导体外包覆0. 05mm〜1. OOmm硅质化合物构成的耐火绝缘层和耐火纤维编织层构成的外保护层。其适于低压耐火。
[0004] 中国专利CN1480958公开的6kV及以上中压膨胀型耐火电缆，绝缘线芯外表设有隔离套，隔离套外表填充有矿物质复合层，矿物质复合层外设有膨胀套，膨胀套外为护套。 其外护套在烧毁的情况下，矿物质耐火隔热层易损坏。
[0005] 中国专利10116999¾公开中压耐火电缆，其在中压结构的绝缘线芯外设耐火层和外护套。耐火层为内侧耐火无机纤维隔热层和外侧柔软型热固性弹性体即：陶瓷化硅橡胶。其外侧柔软型热固性弹性体即：陶瓷化硅橡胶的有机质和水分烧失会变成类似陶瓷状固体耐火隔热层。其类似陶瓷状固体耐火隔热层在有氧燃烧环境下对电缆内部保护不足。
发明内容
[0006] 本实用新型的目的是针对现有技术的不足，提供一种能在有氧、高温的燃烧环境下不易损坏、耐火性优良的中压耐火电缆。
[0007] 为实现上述技术目的，本实用新型采用以下技术方案：一种中压耐火电缆，包括导体，导体上依次挤包导体屏蔽层、绝缘层、绝缘屏蔽层，绝缘屏蔽层外依次设有金属屏蔽层、 隔热层、耐火层、外护套，导体、导体屏蔽层、绝缘层、绝缘屏蔽层和金属屏蔽层构成绝缘线芯，所述耐火层是由陶瓷化硅橡胶的内耐火层和结壳型聚烯烃的外耐火层构成的组合耐火层。
[0008] 陶瓷化硅橡胶配方包括硅橡胶、无机填充料、瓷化粉。即：在硅橡胶中添加无机填充料、瓷化粉材料，经过混炼后，在开炼机上加入硫化剂，然后经过模压、挤出的产品。
[0009] 进一步，所述外耐火层和外护套之间设有低烟无卤阻燃带。
[0010] 进一步，所述绝缘线芯是一根。
[0011] 进一步，所述绝缘线芯是三根，三根绝缘线芯和填料构成缆芯，所述隔热层位于缆芯和内耐火层之间。
[0012] 进一步，所述隔热层是无碱玻璃纤维编织带。
[0013] 进一步，所述填料是无碱玻璃纤维材料构成的填料。
[0014] 进一步，所述金属屏蔽层是金属铜带构成的金属屏蔽层。[0015] 进一步，所述外护套是聚烯烃材料构成的外护套。
[0016] 采用上述技术方案后，本实用新型具有以下有益效果：
[0017] (1)陶瓷化硅橡胶的内耐火层在燃烧条件下，遇高温时即转变为类似陶瓷状固体耐火隔热套的耐火隔热结构。结壳型聚烯烃的外耐火层在燃烧条件下，遇火则结壳，将陶瓷化硅橡胶的内耐火层紧紧包裹，具有隔氧的效果。结壳型聚烯烃结壳性能好，组合耐火层、 隔热层隔热性能良好。由陶瓷化硅橡胶的内耐火层和结壳型聚烯烃的外耐火层构成的组合耐火层，有效解决类似陶瓷状固体耐火隔热层在燃烧环境即有氧、高温条件下对电缆内部保护不足的技术问题，提高中压耐火电缆的耐火性能，在燃烧情况下，能够保证一段时间地正常供电。
[0018] (2)在外耐火层和外护套之间设低烟无卤阻燃带，进一步提高中压耐火电缆的低烟无卤耐火性能。在组合耐火层、低烟无卤阻燃带和外护套的共同作用下，中压耐火电缆达到A类阻燃要求。
[0019] (3)绝缘线芯是一根或三根。采用三根绝缘线芯时，三根绝缘线芯和填料构成缆芯，隔热层位于缆芯和内耐火层之间，其作用：一、提高中压耐火电缆的通电性能；二、无碱玻璃纤维编织带提高耐火、耐高温、阻燃、绝热等性能，使中压耐火电缆在燃烧条件下，保证一段时间地正常供电；三、三根绝缘线芯加工绞合方便，降低成本。
[0020] (4)填料采用无碱玻璃纤维材料，隔热层优选无碱玻璃纤维编织带，提高耐火、耐高温、阻燃、隔热等性能，使中压耐火电缆在燃烧条件下，保证一段时间地正常供电。
[0021] (5)采用金属铜带构成的金属屏蔽层提高中压耐火电缆的屏蔽性能。
[0022] (6)采用聚烯烃材料构成的外护套正常情况下使用寿命长，其在电缆燃烧条件下， 低烟、无卤并提高阻燃性能。
附图说明
[0023] 图1为本实用新型实施例一的结构示意图；
[0024] 图2为本实用新型实施例二的结构示意图；
[0025] 图3是图1或2中部件6的结构放大图。
[0026] 图中：1.导体，2.导体屏蔽层，3.绝缘层，4.绝缘屏蔽层，5.金属屏蔽层，6.绝缘线芯，7.填料，8.缆芯，9.隔热层，10.内耐火层，11.外耐火层，12.低烟无卤阻燃带，13.外护套。
具体实施方式
[0027] 下面结合附图和具体实施例，对本实用新型作进一步详细的说明。
[0028] 实施例一
[0029] 如图1和图3所示，中压耐火电缆，中间有一根导体1，导体1采用铜导体。导体1 外以三层挤包方式依次挤包导体屏蔽层2、绝缘层3、绝缘屏蔽层4。绝缘屏蔽层4外设有金属屏蔽层5，金属屏蔽层5优选铜带屏蔽层。导体1、导体屏蔽层2、绝缘层3、绝缘屏蔽层4 和金属屏蔽层5构成绝缘线芯6。绝缘线芯6外依次设有隔热层9、组合耐火层、低烟无卤阻燃带12和外护套13。隔热层9优选无碱玻璃纤维编织带。组合耐火层由陶瓷化硅橡胶的内耐火层10和结壳型聚烯烃的外耐火层11构成。外护套13优选聚烯烃材料。[0030] 隔热层9优选无碱玻璃纤维编织带，提高中压耐火电缆的耐火性、耐高温性、阻燃性和隔热性。
[0031] 结壳型聚烯烃的外耐火层11在燃烧条件下，遇火则结壳，将陶瓷化硅橡胶的内耐火层10紧紧包裹，达到隔氧的效果。陶瓷化硅橡胶的内耐火层10在燃烧条件下，遇高温时即转变为类似陶瓷状固体耐火隔热套的耐火隔热结构，达到耐火、隔热的效果。结壳型聚烯烃耐火性能好，陶瓷化硅橡胶和隔热层的隔热性能好，使中压耐火电缆耐火性好，在燃烧情况下，能够保证一段时间地正常供电。
[0032] 组合耐火层、低烟无卤阻燃带12和外护套13的共同作用下，中压耐火电缆达到A 类阻燃要求。
[0033] 实施例二
[0034] 如图2和图3所示，中压耐火电缆，中间有三根导体1，导体1采用铜导体。导体1 外以三层挤包方式依次挤包导体屏蔽层2、绝缘层3、绝缘屏蔽层4。绝缘屏蔽层4外设有金属屏蔽层5，金属屏蔽层5优选铜带屏蔽层。导体1、导体屏蔽层2、绝缘层3、绝缘屏蔽层 4和金属屏蔽层5构成绝缘线芯6。三根绝缘线芯6和填料7构成缆芯8，填料7优选无碱玻璃纤维材料。缆芯8外依次设有隔热层9、组合耐火层、低烟无卤阻燃带12和外护套13。 隔热层9优选无碱玻璃纤维编织带。组合耐火层由陶瓷化硅橡胶的内耐火层10和结壳型聚烯烃的外耐火层11构成。外护套13优选聚烯烃材料。
[0035] 填料7采用无碱玻璃纤维材料，隔热层9优选无碱玻璃纤维编织带，进一步提高中压耐火电缆的耐火性、耐高温性、阻燃性和隔热性。
[0036] 结壳型聚烯烃的外耐火层11在燃烧条件下，遇火则结壳，将陶瓷化硅橡胶的内耐火层10紧紧包裹，达到隔氧的效果。陶瓷化硅橡胶的内耐火层10在燃烧条件下，遇高温时即转变为类似陶瓷状固体耐火隔热套的耐火隔热结构，达到耐火、隔热的效果。结壳型聚烯烃耐火性能好，陶瓷化硅橡胶和隔热层的隔热性能好，使中压耐火电缆耐火性好，在燃烧情况下，能够保证一段时间地正常供电。
[0037] 组合耐火层、低烟无卤阻燃带12和外护套13的共同作用下，中压耐火电缆达到A 类阻燃要求。
[0038] 本实用新型不限于上述实施例，凡采用等同或等效替换形成的技术方案均属于本实用新型要求保护的范围。
Claims (8)
1. 一种中压耐火电缆，包括导体（1)，导体上依次挤包导体屏蔽层（2)、绝缘层（3)、 绝缘屏蔽层（4)，绝缘屏蔽层（4)外依次设有金属屏蔽层（5)、隔热层（9)、耐火层、外护套 (13)，导体（1)、导体屏蔽层（2)、绝缘层（3)、绝缘屏蔽层（4)和金属屏蔽层（5)构成绝缘线芯（6)，其特征在于：所述耐火层是由陶瓷化硅橡胶的内耐火层（10)和结壳型聚烯烃的外耐火层（11)构成的组合耐火层。
2.根据权利要求1所述的中压耐火电缆，其特征在于：所述外耐火层（11)和外护套 (13)之间设有低烟无卤阻燃带（12)。
3.根据权利要求2所述的中压耐火电缆，其特征在于：所述绝缘线芯（6)是一根。
4.根据权利要求2所述的中压耐火电缆，其特征在于：所述绝缘线芯（6)是三根，三根绝缘线芯和填料（7)构成缆芯（8)，所述隔热层（9)位于缆芯（8)和内耐火层（10)之间。
5.根据权利要求3或4所述中压耐火电缆，其特征在于：所述隔热层（9)是无碱玻璃纤维编织带。
6.根据权利要求3或4所述中压耐火电缆，其特征在于：所述填料（7)是无碱玻璃纤维材料构成的填料。
7.根据权利要求3或4所述中压耐火电缆，其特征在于：所述金属屏蔽层（5)是金属铜带构成的金属屏蔽层。
8.根据权利要求3或4所述中压耐火电缆，其特征在于：所述外护套（13)是聚烯烃材料构成的外护套。
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102568691A (zh) * | 2012-03-28 | 2012-07-11 | 江苏长峰电缆有限公司 | 一种环保型中压耐火电缆 |
| CN102682906A (zh) * | 2012-05-03 | 2012-09-19 | 宝胜科技创新股份有限公司 | 一种铝芯低压耐火电力电缆及其制备方法 |
| CN103198891A (zh) * | 2012-01-05 | 2013-07-10 | 尼克桑斯公司 | 能够防止火传播的电力和/或通信电缆 |
| CN103928137A (zh) * | 2014-04-26 | 2014-07-16 | 芜湖航天特种电缆厂 | 耐高温扇形线芯电缆 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103198891A (zh) * | 2012-01-05 | 2013-07-10 | 尼克桑斯公司 | 能够防止火传播的电力和/或通信电缆 |
| CN103198891B (zh) * | 2012-01-05 | 2019-01-15 | 尼克桑斯公司 | 能够防止火传播的电力和/或通信电缆 |
| CN102568691A (zh) * | 2012-03-28 | 2012-07-11 | 江苏长峰电缆有限公司 | 一种环保型中压耐火电缆 |
| CN102682906A (zh) * | 2012-05-03 | 2012-09-19 | 宝胜科技创新股份有限公司 | 一种铝芯低压耐火电力电缆及其制备方法 |
| CN103928137A (zh) * | 2014-04-26 | 2014-07-16 | 芜湖航天特种电缆厂 | 耐高温扇形线芯电缆 |
| CN103928137B (zh) * | 2014-04-26 | 2016-09-28 | 芜湖航天特种电缆厂 | 耐高温扇形线芯电缆 |
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