CN108922665A - 一种阻燃光纤复合电缆 - Google Patents
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Abstract
本发明公开了一种阻燃光纤复合电缆,包括缆芯,所述缆芯由多根电缆线芯、一根光缆线芯和多条填充绳绞合而成,多根电缆线芯和一根光缆线芯呈环型布置在缆芯内部,电缆线芯和光缆线芯围成的中心处以及相邻电缆线芯或光缆线芯外切处外侧设置有填充绳,缆芯外部包覆有聚乙烯内衬层,聚乙烯内衬层外依次包覆有外屏蔽层、硅胶防火层、云母带层、高阻燃无卤低烟阻燃护套层和阻水层,聚乙烯内衬层与电缆线芯、光缆线芯和填充绳的间隙内填充有绝缘发泡层。本发明充分利用各个材料的优点,使得线缆整体耐油、耐酸、防腐蚀性能好,不仅节约了成本,还提高了线缆的抗压抗拉性能,线缆整体柔韧性能好,大大延长了电缆的寿命。
Description
技术领域
本发明涉及电缆技术领域,具体是一种阻燃光纤复合电缆。
背景技术
电线电缆是电力输送或信息传递的载体,广泛应用于工业和民用用电设施中,使用环境或场合不同,要求各异,尤其是风力发电、冶金和化工等行业使用环境恶劣,对电缆产品提出一些特定的性能要求,当前使用的聚氯乙烯护套材料柔软性差、断裂伸长率小、抗开裂性能差不具备扭转,耐油、耐酸、防腐蚀性能也达不到要求,电缆使用寿命短,更换频繁,影响工业生产正常进行;为了满足这些特殊要求,有些厂家不得不采用硅橡胶或聚氨醋材料,但是硅橡胶的耐冲击性比较差,电缆护套容易开裂,使用寿命也短,而聚氨酷材料的成本太高;且现有的线缆耐热性能较差,适用范围较小。
随着未来城市改造的现代化进程,线路的满负荷和超负荷己成常态,大量建筑物内的光电缆己经出现绝缘和护套老化,容易造成线路短路引起火灾和人员伤亡。因此,要想在现代化高层建筑内安全实现光纤化传输,就得改进目前的光电缆结构,使得光电缆整体结构满足电气性能稳定、防火性能好,抗老化性更可靠的使用需要。
发明内容
本发明的目的在于提供一种阻燃光纤复合电缆,以解决上述背景技术中提出的问题。
为实现上述目的,本发明提供如下技术方案:
一种阻燃光纤复合电缆,包括缆芯,所述缆芯由多根电缆线芯、一根光缆线芯和多条填充绳绞合而成,多根电缆线芯和一根光缆线芯呈环型布置在缆芯内部,电缆线芯和光缆线芯围成的中心处以及相邻电缆线芯或光缆线芯外切处外侧设置有填充绳,所述缆芯外部包覆有聚乙烯内衬层,聚乙烯内衬层外包覆有外屏蔽层,外屏蔽层外包覆有硅胶防火层,硅胶防火层外侧依次设置有云母带层、高阻燃无卤低烟阻燃护套层和阻水层,所述聚乙烯内衬层与电缆线芯、光缆线芯和填充绳的间隙内填充有绝缘发泡层。
作为本发明进一步的方案:所述电缆线芯包括电缆导体和包覆在电缆导体外部的绝缘层,电缆线芯于聚乙烯内衬层内设置有三根。
作为本发明进一步的方案:所述光缆线芯内包括多根光纤和包覆在光纤外侧的内屏蔽层,在光纤和内屏蔽层之间设置有套管固态阻水填充层,套管固态阻水填充层为膨胀型阻水纱层,内屏蔽层为钢带绕包层,内屏蔽层外部包覆有松套管。
作为本发明进一步的方案:所述光缆线芯的中心设置一根光纤,光缆线芯中心处光纤的外侧周向均匀设置四根或六根光纤。
作为本发明进一步的方案:所述填充绳设置有五条。
作为本发明进一步的方案:所述外屏蔽层为镀锡铜丝网层。
作为本发明进一步的方案:所述硅胶防火层的厚度为15~20mm。
作为本发明进一步的方案:所述硅胶防火层内设置有将硅胶防火层分割为多个等分的多个橡胶骨架,橡胶骨架沿径向设置,且橡胶骨架整体呈放射状结构。
作为本发明进一步的方案:所述云母带层覆合在高阻燃无卤低烟阻燃护套层的内壁上,高阻燃无卤低烟阻燃护套层的外侧包裹由阻水层,阻水层为聚氨酯防水层,聚氨酯防水层外表面涂覆有石墨涂层。
与现有技术相比,本发明的有益效果是:该阻燃光纤复合电缆,聚乙烯内衬层与电缆线芯、光缆线芯和填充绳的间隙内填充有绝缘发泡层,绝缘发泡层的泡孔为全密闭气孔,能够有效防止水和空气中的水分进入,提高了光电缆的防水性能,且绝缘发泡层还提高了光电缆对外界的抗压性能;光纤外侧包覆有内屏蔽层,聚乙烯内衬层外侧设置有外屏蔽层,有效保证了信号的安全传输,避免电磁干扰,同时也保证了电气性能的稳定;硅橡胶防火层由橡胶骨架固定,使电缆整体具有良好的柔韧性,避免电缆在使用过程中对内部中心导体的挤压力;云母带层与高阻燃无卤低烟阻燃护套层共同对电缆的燃烧起到保护作用,大大提高了安全性和稳定性;阻水层为聚氨酯防水层,硅橡胶作为防火层,如此设置,充分利用各个材料的优点,使得线缆整体耐油、耐酸、防腐蚀性能好,不仅节约了成本,还提高了线缆的抗压抗拉性能,线缆整体柔韧性能好,大大延长了电缆的寿命。
附图说明
图1为本发明的结构示意图。
图2为本发明中光缆线芯的一种实施方式示意图。
图3为本发明中光缆线芯的另一种实施方式示意图。
图中:1-阻水层,2-高阻燃无卤低烟阻燃护套层,3-云母带层,4-硅胶防火层,5-橡胶骨架,6-外屏蔽层,7-聚乙烯内衬层,8-填充绳,9-电缆线芯,10-绝缘层,11-电缆导体,12-光缆线芯,13-绝缘发泡层,14-松套管,15-内屏蔽层,16-套管固态阻水填充层,17-光纤。
具体实施方式
下面将结合本发明实施例中的附图,对本发明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发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,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,都属于本发明保护的范围。
请参阅图1~3,本发明实施例中,一种阻燃光纤复合电缆,包括缆芯,所述缆芯由多根电缆线芯9、一根光缆线芯12和多条填充绳8绞合而成,多根电缆线芯9和一根光缆线芯12呈环型布置在缆芯内部,每根电缆线芯9包括电缆导体11和包覆在电缆导体11外部的绝缘层10,电缆线芯9优选设置三根,所述光缆线芯12内包括多根光纤17和包覆在光纤17外侧的内屏蔽层15,如图2和3所示,所述光缆线芯12的中心设置一根光纤17,光缆线芯12中心处光纤17的外侧周向均匀设置四根或六根光纤17,在光纤17和内屏蔽层15之间设置有套管固态阻水填充层16,套管固态阻水填充层16为膨胀型阻水纱层,相对于传统的光电缆,提高了线缆的防水性能,内屏蔽层15为钢带绕包层,内屏蔽层15外部包覆有松套管14,电缆线芯9和光缆线芯12围成的中心处以及相邻电缆线芯9或光缆线芯12外切处外侧设置有填充绳8,填充绳8优选设置五条。
所述缆芯外部包覆有聚乙烯内衬层7,聚乙烯内衬层7外包覆有外屏蔽层6,外屏蔽层6为镀锡铜丝网层,外屏蔽层6外包覆有硅胶防火层4,硅胶防火层4的厚度为15~20mm,在硅胶防火层4内设置有将硅胶防火层4分割为多个等分的多个橡胶骨架5,橡胶骨架5沿径向设置,且橡胶骨架5整体呈放射状结构,硅胶防火层4外侧依次设置有云母带层3、高阻燃无卤低烟阻燃护套层2和阻水层1,所述云母带层3覆合在高阻燃无卤低烟阻燃护套层2的内壁上,高阻燃无卤低烟阻燃护套层2的外侧包裹由阻水层1,所述阻水层1为聚氨酯防水层,聚氨酯防水层外表面涂覆有石墨涂层,所述聚乙烯内衬层7与电缆线芯9、光缆线芯12和填充绳8的间隙内填充有绝缘发泡层13。
该阻燃光纤复合电缆,聚乙烯内衬层7与电缆线芯9、光缆线芯12和填充绳8的间隙内填充有绝缘发泡层13,绝缘发泡层13的泡孔为全密闭气孔,能够有效防止水和空气中的水分进入,提高了光电缆的防水性能,且绝缘发泡层13还提高了光电缆对外界的抗压性能;光纤17外侧包覆有内屏蔽层15,聚乙烯内衬层7外侧设置有外屏蔽层6,有效保证了信号的安全传输,避免电磁干扰,同时也保证了电气性能的稳定;硅橡胶防火层4由橡胶骨架5固定,使电缆整体具有良好的柔韧性,避免电缆在使用过程中对内部中心导体的挤压力;云母带层3与高阻燃无卤低烟阻燃护套层2共同对电缆的燃烧起到保护作用,大大提高了安全性和稳定性;阻水层1为聚氨酯防水层,硅橡胶作为防火层,如此设置,充分利用各个材料的优点,使得线缆整体耐油、耐酸、防腐蚀性能好,不仅节约了成本,还提高了线缆的抗压抗拉性能,线缆整体柔韧性能好,大大延长了电缆的寿命。
以上的仅是本发明的优选实施方式,应当指出,对于本领域的技术人员来说,在不脱离本发明构思的前提下,还可以作出若干变形和改进,这些也应该视为本发明的保护范围,这些都不会影响本发明实施的效果和专利的实用性。
Claims (9)
1.一种阻燃光纤复合电缆,包括缆芯,其特征在于,所述缆芯由多根电缆线芯(9)、一根光缆线芯(12)和多条填充绳(8)绞合而成,多根电缆线芯(9)和一根光缆线芯(12)呈环型布置在缆芯内部,电缆线芯(9)和光缆线芯(12)围成的中心处以及相邻电缆线芯(9)或光缆线芯(12)外切处外侧设置有填充绳(8),所述缆芯外部包覆有聚乙烯内衬层(7),聚乙烯内衬层(7)外包覆有外屏蔽层(6),外屏蔽层(6)外包覆有硅胶防火层(4),硅胶防火层(4)外侧依次设置有云母带层(3)、高阻燃无卤低烟阻燃护套层(2)和阻水层(1),所述聚乙烯内衬层(7)与电缆线芯(9)、光缆线芯(12)和填充绳(8)的间隙内填充有绝缘发泡层(13)。
2.根据权利要求1所述的阻燃光纤复合电缆,其特征在于,所述电缆线芯(9)包括电缆导体(11)和包覆在电缆导体(11)外部的绝缘层(10),电缆线芯(9)于聚乙烯内衬层(7)内设置有三根。
3.根据权利要求1所述的阻燃光纤复合电缆,其特征在于,所述光缆线芯(12)内包括多根光纤(17)和包覆在光纤(17)外侧的内屏蔽层(15),在光纤(17)和内屏蔽层(15)之间设置有套管固态阻水填充层(16),套管固态阻水填充层(16)为膨胀型阻水纱层,内屏蔽层(15)为钢带绕包层,内屏蔽层(15)外部包覆有松套管(14)。
4.根据权利要求2所述的阻燃光纤复合电缆,其特征在于,所述光缆线芯(12)的中心设置一根光纤(17),光缆线芯(12)中心处光纤(17)的外侧周向均匀设置四根或六根光纤(17)。
5.根据权利要求2所述的阻燃光纤复合电缆,其特征在于,所述填充绳(8)设置有五条。
6.根据权利要求1所述的阻燃光纤复合电缆,其特征在于,所述外屏蔽层(6)为镀锡铜丝网层。
7.根据权利要求1所述的阻燃光纤复合电缆,其特征在于,所述硅胶防火层(4)的厚度为15~20mm。
8.根据权利要求1或7所述的阻燃光纤复合电缆,其特征在于,所述硅胶防火层(4)内设置有将硅胶防火层(4)分割为多个等分的多个橡胶骨架(5),橡胶骨架(5)沿径向设置,且橡胶骨架(5)整体呈放射状结构。
9.根据权利要求1所述的阻燃光纤复合电缆,其特征在于,所述云母带层(3)覆合在高阻燃无卤低烟阻燃护套层(2)的内壁上,高阻燃无卤低烟阻燃护套层(2)的外侧包裹由阻水层(1),阻水层(1)为聚氨酯防水层,聚氨酯防水层外表面涂覆有石墨涂层。
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CN113270229A (zh) * | 2021-05-25 | 2021-08-17 | 国网河南省电力公司西峡县供电公司 | 一种高稳定传输性能的光电复合缆 |
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