CN114429836A - A类阻燃低烟无卤控制电缆 - Google Patents
A类阻燃低烟无卤控制电缆 Download PDFInfo
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Abstract
本发明申请实施例公开了A类阻燃低烟无卤控制电缆,包括无卤包带,所述无卤包带的内部设有导体和填充物,所述导体的外表面上设有绝缘层,所述无卤包带的外表面上设有金属网加强层,所述金属网加强层的外壁上设有四个等距环形阵列的防割突起,四个所述防割突起的内部均设有钢丝,所述防割突起的外表面上设有涂料层。该A类阻燃低烟无卤控制电缆,通过在无卤包带的外表面设置一层金属网加强层提高电缆整体的强度,提高了该控制电缆的防割能力,且该控制电缆通过在金属网加强层的外表面上环形阵列四个防割突起,并在四个防割突起的内部设置钢丝,进一步提高了该控制电缆的防割能力,从而提高了其防盗性能。
Description
技术领域
本发明申请涉及电缆技术领域,更具体地,涉及A类阻燃低烟无卤控制电缆。
背景技术
城市化进程的发展带动城市轨道交通、供电网络的迅猛发展,需要电力系统的安全、监控回路及保护线路等的安全运行进行保障,因此需要大量的控制电缆对这些系统、仪器仪表等进行监控和保护。
然而,传统的控制电缆已无法满足高阻燃性能要求,因为传统电缆的绝缘和护套材料大多数是可燃的,当发生火灾时,这些材料燃烧会释放大量的含卤素有毒气体和浓烟,危害环境和人体健康,因此在人员和电气设备密集的场所敷设更高阻燃性能的电缆阻止火焰蔓延显得日益重要,且现有控制电缆的防割、防盗能力较差,存在改善的空间。
发明内容
鉴于上述问题,本申请提出了A类阻燃低烟无卤控制电缆,具备阻燃特性、火灾时电缆不易燃烧、发烟量小、不含卤素的优点,解决了传统的控制电缆已无法满足高阻燃性能要求,因为传统电缆的绝缘和护套材料大多数是可燃的,当发生火灾时,这些材料燃烧会释放大量的含卤素有毒气体和浓烟,危害环境和人体健康,因此在人员和电气设备密集的场所敷设更高阻燃性能的电缆阻止火焰蔓延显得日益重要,且现有控制电缆的防割、防盗能力较差,存在改善空间的问题。
本发明提供如下技术方案:A类阻燃低烟无卤控制电缆,包括无卤包带,所述无卤包带的内部设有导体和填充物,所述导体的外表面上设有绝缘层,所述无卤包带的外表面上设有金属网加强层,所述金属网加强层的外壁上设有四个等距环形阵列的防割突起,四个所述防割突起的内部均设有钢丝,所述防割突起的外表面上设有涂料层,所述涂料层和金属网加强层之间填充有防水填料,且涂料层的外壁上设有外护套。
优选的,所述涂料层的内部开设有空腔,且涂料层的内部设有环形阵列在空腔内的隔筋,所述空腔内填充有填充料,所述填充料为防鼠虫的药剂。
优选的,所述外护套的内部开设有环形阵列的梯形空腔,所述梯形空腔内设有空心球,所述外护套为低烟无卤A类阻燃料挤包。
优选的,所述无卤包带采用厚度.mm的低烟无卤带,重叠率为%。
优选的,所述绝缘层和填充物分别为硅烷交联聚乙烯绝缘料和PP绳。
本申请提供的A类阻燃低烟无卤控制电缆,具备以下有益效果:。
1、该A类阻燃低烟无卤控制电缆,通过在无卤包带的外表面设置一层金属网加强层提高电缆整体的强度,提高了该控制电缆的防割能力,且该控制电缆通过在金属网加强层的外表面上环形阵列四个防割突起,并在四个防割突起的内部设置钢丝,进一步提高了该控制电缆的防割能力,从而提高了其防盗性能。
2、该A类阻燃低烟无卤控制电缆,通过在外护套的内部开设梯形空腔,并在梯形空腔内设置空心球,可提高该控制电缆的抗压、抗冲击性能,且该控制电缆通过在外护套的内壁上设置一层填充有防鼠虫药剂的涂料层,提高了该控制电缆的防鼠虫能力,使用更为安全。
3、该A类阻燃低烟无卤控制电缆,通过采用低烟无卤的无卤包带、低烟无卤A类阻燃料挤包的外护套和硅烷交联聚乙烯绝缘料的绝缘层,使该电缆具有阻燃特性,火灾时电缆不易燃烧、发烟量小、不含卤素。
附图说明
为了更清楚地说明本申请实施例中的技术方案,下面将对实施例描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本申请的一些实施例,对于本领域技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1为本发明结构示意图;
图2为本发明结构涂料层示意图;
图3为本发明结构外护套示意图。
图中:1、无卤包带;2、导体;3、填充物;4、绝缘层;5、金属网加强层;6、防割突起;7、钢丝;8、涂料层;801、隔筋;802、空腔;803、填充料;9、防水填料;10、外护套;101、梯形空腔;102、空心球。
具体实施方式
下面将结合本申请实施例中的附图,对本申请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申请一部分实施例,而不是全部的实施例。基于本申请中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本申请保护的范围。
请参阅图1-3,A类阻燃低烟无卤控制电缆,包括无卤包带1,无卤包带1的内部设有导体2和填充物3,本电缆填充物3和无卤包带1完全采用电缆生产中常用的PP绳和聚酯带,而不是选用虽然阻燃和耐火性能更好但价格更高的玻璃丝和玻纤带,从而降低了制造成本,简化生产流程,减小了电缆的重量和外径,更容易生产和后期的敷设使用,导体2采用退火无氧铜,导体2的外表面上设有绝缘层4,无卤包带1的外表面上设有金属网加强层5,金属网加强层5的外壁上设有四个等距环形阵列的防割突起6,四个防割突起6的内部均设有钢丝7,通过在无卤包带1的外表面设置一层金属网加强层5提高电缆整体的强度,提高了该控制电缆的防割能力,且该控制电缆通过在金属网加强层5的外表面上环形阵列四个防割突起6,并在四个防割突起6的内部设置钢丝7,进一步提高了该控制电缆的防割能力,从而提高了其防盗性能,防割突起6的外表面上设有涂料层8,涂料层8和金属网加强层5之间填充有防水填料9,利用填充在涂料层8和金属网加强层5之间的防水填料9,在涂料层8破裂时,起到防水的作用,从而确保该控制电缆在此情况下可以正常使用,且涂料层8的外壁上设有外护套10。
其中,涂料层8的内部开设有空腔802,且涂料层8的内部设有环形阵列在空腔802内的隔筋801,空腔802内填充有填充料803,填充料803为防鼠虫的药剂,利用设置在涂料层8空腔802内的隔筋801,一方面确保涂料层8整体的强度,另一方面对填充料803起到隔离的作用,避免涂料层8在一处破裂时,导致其他位置的填充料803失效的问题,本控制电缆通过设置在涂料层8空腔802内的防鼠虫药剂,提高控制电缆的防鼠、蚁虫能力。
其中,外护套10的内部开设有环形阵列的梯形空腔101,梯形空腔101内设有空心球102,利用开设在外护套10内部的梯形空腔101和设置在梯形空腔101内部的空心球102,提高了该控制电缆的抗压和抗冲击性能,外护套10为低烟无卤A类阻燃料挤包。
其中,无卤包带1采用厚度0.2mm的低烟无卤带,重叠率为50%,现有技术中,隔氧层采用挤制氧指数更高的低烟无卤聚烯烃材料,加隔氧层的目的是当电缆燃烧时隔氧层会释放出结晶水及吸热,在表面形成覆盖层,覆盖层隔绝了氧气的助燃作用,可以保护内部结构;结晶水析出时,水蒸气的蒸发吸收大量热量,降低了周围环境的温度,着火电缆将逐渐自行熄灭,现有技术采用挤制一层氧指数更高的低烟无卤聚烯烃材料作为隔氧层,而本电缆采用的是无卤带绕包工艺,这样无卤包带1既可以当包带稳定电缆内部结构,又可以充当隔氧层,生产工艺简单,电缆结构尺寸减小,制造成本降低,并且可以同样起到隔氧层的作用。
其中,绝缘层4和填充物3分别为硅烷交联聚乙烯绝缘料和PP绳,现有技术中的绝缘层4采用一般生产厂家不具备生产能力的辐照交联材料,辐照交联与硅烷交联相比存在以下缺点:1、生产设备昂贵,一般厂家没有辐照交联的生产设备,不具备辐照交联的生产能力;2、辐照交联的交联性能不稳定,特别是绝缘厚度比较大时,产生材料交联不充分,从而导致热延伸性能不稳定;3、辐照交联没有硅烷交联的机械物理性能好,尤其是抗张强度,本电缆采用更经济实惠的硅烷交联,从而简化生产工艺,降低生产成本。
最后应说明的是:以上实施例仅用以说明本申请的技术方案,而非对其限制;尽管参照前述实施例对本申请进行了详细的说明,本领域的普通技术人员当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换;而这些修改或者替换,并不驱使相应技术方案的本质脱离本申请各实施例技术方案的精神和范围。
Claims (5)
1.A类阻燃低烟无卤控制电缆,包括无卤包带(1),其特征在于:所述无卤包带(1)的内部设有导体(2)和填充物(3),所述导体(2)的外表面上设有绝缘层(4),所述无卤包带(1)的外表面上设有金属网加强层(5),所述金属网加强层(5)的外壁上设有四个等距环形阵列的防割突起(6),四个所述防割突起(6)的内部均设有钢丝(7),所述防割突起(6)的外表面上设有涂料层(8),所述涂料层(8)和金属网加强层(5)之间填充有防水填料(9),且涂料层(8)的外壁上设有外护套(10)。
2.根据权利要求1所述的A类阻燃低烟无卤控制电缆,其特征在于:所述涂料层(8)的内部开设有空腔(802),且涂料层(8)的内部设有环形阵列在空腔(802)内的隔筋(801),所述空腔(802)内填充有填充料(803),所述填充料(803)为防鼠虫的药剂。
3.根据权利要求1所述的A类阻燃低烟无卤控制电缆,其特征在于:所述外护套(10)的内部开设有环形阵列的梯形空腔(101),所述梯形空腔(101)内设有空心球(102),所述外护套(10)为低烟无卤A类阻燃料挤包。
4.根据权利要求1所述的A类阻燃低烟无卤控制电缆,其特征在于:所述无卤包带(1)采用厚度0.2mm的低烟无卤带,重叠率为50%。
5.根据权利要求1所述的A类阻燃低烟无卤控制电缆,其特征在于:所述绝缘层(4)和填充物(3)分别为硅烷交联聚乙烯绝缘料和PP绳。
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