CN108666041A - 铜芯交联聚乙烯绝缘钢带铠装聚氯乙烯护套耐火电力电缆 - Google Patents
铜芯交联聚乙烯绝缘钢带铠装聚氯乙烯护套耐火电力电缆 Download PDFInfo
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Abstract
本发明公开了一种铜芯交联聚乙烯绝缘钢带铠装聚氯乙烯护套耐火电力电缆，包括缆芯，所述的缆芯由一对绝缘线芯对绞后绕包改良型玻纤带而成；在缆芯外捆绑高强度无卤低烟聚烯烃扎带并扎紧，在高强度无卤低烟聚烯烃扎带外挤包高阻燃带胶热缩管，在高阻燃带胶热缩管外编织钢带铠装层，在钢带铠装层外绕包内表面涂有防火涂料的聚氯乙烯内护套，在聚氯乙烯内护套外表面涂覆纳米辐射散热降温涂料层，在纳米辐射散热降温涂料层外绕包双面合成云母带，最后在双面合成云母带外挤包聚氯乙烯外护套。
Description
技术领域
本发明涉及电线电缆领域，具体涉及铜芯交联聚乙烯绝缘钢带铠装聚氯乙烯护套耐火电力电缆。
背景技术
火灾是指在时间和空间上失去控制的燃烧所造成的灾害。在各种灾害中，火灾是最经常、最普遍地威胁公众安全和社会发展的主要灾害之一。
随着社会的不断发展，在社会财富日益增多的同时，导致发生火灾的危险性也在增多，火灾的危害性也越来越大。据统计，我国70年代火灾年平均损失不到2.5亿元，80年代火灾年平均损失不到3.2 亿元。进入90年代，特别是1993年以来，火灾造成的直接财产损失上升到年均十几亿元。据中国消防盘点，2014年全国全年接报火灾39.5万起，死亡1817人，受伤1493人，直接财产损失达43.9亿元。从统计数据来看，电气火灾占火灾中的36.9%，导致的经济损失占58.6%。虽然火灾中的缺氧、高温、烟尘、毒性气体是危害人身的主要原因，但据火灾中造成人员伤亡的原因统计分析，由于一氧化碳中毒窒息死亡或被其他有毒烟气熏死者一般占火灾总死亡人数的40％～50％。
在火灾中往往会因电缆耐火阻燃性能差导致电力供应中断，致使抢救工作受阻。电缆本身的阻燃耐火性能差，导致烟气透光率过低并释放有毒气体加剧了灾情，最终造成了巨大的人员、财产损失。
电缆在长时间使用过程中会发生老化，容易引起火灾，普通的塑料管子啊起火情况下没有防火功能，反而会造成火势增加，严重影响管路的安全性。
发明内容
为了克服现有技术中存在的不足，提供一种铜芯交联聚乙烯绝缘钢带铠装聚氯乙烯护套耐火电力电缆。
为实现上述目的，本发明提供一种铜芯交联聚乙烯绝缘钢带铠装聚氯乙烯护套耐火电力电缆，包括缆芯，所述的缆芯由一对绝缘线芯对绞后绕包改良型玻纤带而成；在缆芯外捆绑高强度无卤低烟聚烯烃扎带并扎紧，在高强度无卤低烟聚烯烃扎带外挤包高阻燃带胶热缩管，在高阻燃带胶热缩管外编织钢带铠装层，在钢带铠装层外绕包内表面涂有防火涂料的聚氯乙烯内护套，在聚氯乙烯内护套外表面涂覆纳米辐射散热降温涂料层，在纳米辐射散热降温涂料层外绕包双面合成云母带，最后在双面合成云母带外挤包聚氯乙烯外护套。
优选地，所述的绝缘线芯由铜导体以及依次挤包在铜导体外的交联聚乙烯绝缘层、可剥离的半导电绝缘屏蔽层构成。
优选地，所述改良型玻纤带在玻璃纤维带上涂覆有防辐射涂料构成。
与现有技术相比，本发明的有益效果在于：
1、采用涂有防辐射涂料的改良型纤维带绕包形成集阻燃、隔氧、吸热于一体的耐火降温层，能有效阻挡火焰蔓延，烟气含量小、透光率高、无卤、环保，确保电缆正常运行保证动力系统的有效传输，减少不必要的经济及生命损失；
2、高强度无卤低烟聚烯烃材料高强度扎带捆绑扎紧加高阻燃带胶热缩管结构，使填充和绝缘线芯紧密结合成为一稳定整体结构，大大提高了电缆整体抗拉强度；高阻燃带胶热缩管，外层采用优质、柔软的交联聚烯烃材料，内层热熔胶复合加工而成，具有绝缘防腐、耐磨、低熔点、防水、密封和高粘接性等优点，使得电缆在保持柔软性的同时，提高了机械保护强度。
3、采用钢带铠装层，使得该电缆的耐火性能、抵抗外界冲击能力都得到加强；最好的屏蔽保护层，即可防止电缆本身对其他线缆的干扰，又可防止外界磁场对自身得干扰；
4、内护套内表面涂覆防火涂料，大大提高了防火性能，阻止火势蔓延；外表面涂覆纳米辐射散热降温涂料层，改变了电缆外表的燃烧特性，阻滞火灾迅速蔓延，减缓火焰传播速度，耐火阻燃性能；
5、采用双面合成云母带，使得电缆强度高、低密度、耐高温绝缘性好、隔热效果好。
附图说明
图1为本发明的结构示意图。
具体实施方式
下面结合附图和具体实施例，进一步阐明本发明，应理解这些实施例仅用于说明本发明而不用于限制本发明的范围，在阅读了本发明之后，本领域技术人员对本发明的各种等价形式的修改均落于本申请所附权利要求所限定的范围。
如图1所示，本发明提供一种铜芯交联聚乙烯绝缘钢带铠装聚氯乙烯护套耐火电力电缆，包括缆芯，所述的缆芯由一对绝缘线芯对绞后绕包改良型玻纤带4而成；所述的绝缘线芯由铜导体1以及依次挤包在铜导体外的交联聚乙烯绝缘层2、可剥离的半导电绝缘屏蔽层3构成；在缆芯外捆绑高强度无卤低烟聚烯烃扎带5并扎紧，在高强度无卤低烟聚烯烃扎带外挤包高阻燃带胶热缩管6，在高阻燃带胶热缩管外编织钢带铠装层7，在钢带铠装层外绕包内表面涂有防火涂料的聚氯乙烯内护套8，在聚氯乙烯内护套外表面涂覆纳米辐射散热降温涂料层9，在纳米辐射散热降温涂料层外绕包双面合成云母带10，最后在双面合成云母带外挤包聚氯乙烯外护套11。
所述改良型玻纤带在玻璃纤维带上涂覆有防辐射涂料构成，形成集阻燃、隔氧、吸热于一体的耐火降温层，能有效阻挡火焰蔓延，烟气含量小、透光率高、无卤、环保，确保电缆正常运行保证动力系统的有效传输，减少不必要的经济及生命损失。
以上所述仅是本发明的优选实施方式，应当指出，对于本领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干变型和改进，这些也应视为属于本发明的保护范围。
Claims (3)
1.铜芯交联聚乙烯绝缘钢带铠装聚氯乙烯护套耐火电力电缆，包括缆芯，其特征在于：所述的缆芯由一对绝缘线芯对绞后绕包改良型玻纤带而成；在缆芯外捆绑高强度无卤低烟聚烯烃扎带并扎紧，在高强度无卤低烟聚烯烃扎带外挤包高阻燃带胶热缩管，在高阻燃带胶热缩管外编织钢带铠装层，在钢带铠装层外绕包内表面涂有防火涂料的聚氯乙烯内护套，在聚氯乙烯内护套外表面涂覆纳米辐射散热降温涂料层，在纳米辐射散热降温涂料层外绕包双面合成云母带，最后在双面合成云母带外挤包聚氯乙烯外护套。
2.根据权利要求1所述的铜芯交联聚乙烯绝缘钢带铠装聚氯乙烯护套耐火电力电缆，其特征在于：所述的绝缘线芯由铜导体以及依次挤包在铜导体外的交联聚乙烯绝缘层、可剥离的半导电绝缘屏蔽层构成。
3.根据权利要求1所述的铜芯交联聚乙烯绝缘钢带铠装聚氯乙烯护套耐火电力电缆，其特征在于： 所述改良型玻纤带在玻璃纤维带上涂覆有防辐射涂料构成。
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