CN110211734A - 一种高寿命隧道涵洞用电缆 - Google Patents
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Abstract
本发明公开了一种高寿命隧道涵洞用电缆，导体设置有三个且相互倚靠成三角型排列在一起；导体的外壁上均包裹有内绝缘层；内绝缘层的外部设置有外绝缘层；内绝缘采用辐照交联聚乙烯材料制成，外绝缘采用阻燃辐照交联聚烯烃材料制成；三个导体的外绝缘层外部采用防潮屏蔽层包裹在一起；防潮屏蔽层与外绝缘层之间形成的空隙设置有填充层；防潮屏蔽层的外壁还依次包裹设置有防蚁鼠联锁铠装层和阻燃外护层；防蚁鼠联锁铠装层采用不锈钢带联锁铠装制成；阻燃外护层采用辐照交联无卤低烟阻燃聚烯烃材料。本发明能够提供一种能够满足特殊环境使用需求的防潮、耐干扰、环保阻燃性能高的高寿命隧道涵洞用电缆。
Description
技术领域
本发明涉及电缆产品技术领域，具体为一种高寿命隧道涵洞用电缆。
背景技术
对于隧道、涵洞、人防工程来讲，工程设计寿命普遍较高，但一般的电缆由于绝缘、护套等高分子材料本身的局限，电缆的使用寿命一般不超过30年，维护更换成本较高，且会影响隧道、涵洞及人防工程的正常使用，这就使得研发一种高寿命的隧道涵洞用电缆显得尤为必要。
发明内容
针对现有技术的不足，本发明提供了一种能够满足特殊环境使用需求的防潮、耐干扰、环保阻燃性能高的高寿命隧道涵洞用电缆。
为实现上述目的，本发明提供如下技术方案：一种高寿命隧道涵洞用电缆，包括导体、内绝缘层、外绝缘层、填充层、防潮屏蔽层、防蚁鼠联锁铠装层和阻燃外护层，所述导体设置有三个且相互倚靠成三角型排列在一起；所述导体的外壁上均包裹有内绝缘层；所述内绝缘层的外部设置有外绝缘层；所述内绝缘采用辐照交联聚乙烯材料制成，所述外绝缘采用阻燃辐照交联聚烯烃材料制成；三个所述导体的外绝缘层外部采用防潮屏蔽层包裹在一起；所述防潮屏蔽层与外绝缘层之间形成的空隙设置有填充层；所述防潮屏蔽层采用铝箔和聚乙烯材料组合结构；所述填充层采用阻水填充绳；所述防潮屏蔽层的外壁还依次包裹设置有防蚁鼠联锁铠装层和阻燃外护层；所述防蚁鼠联锁铠装层采用不锈钢带联锁铠装制成；所述阻燃外护层采用辐照交联无卤低烟阻燃聚烯烃材料。
作为本发明的进一步改进，所述导体为先经拉丝再绞制而成多股铜丝绞合的导电线芯。
作为本发明的进一步改进，所述所述防潮屏蔽层采用铝箔和聚乙烯粘接组合结构的方式，先通过挤塑形成聚乙烯材料层，然后将铝箔纵向包覆在缆芯上，且铝箔的覆盖重叠率应达到30％以上。
本发明提供了一种高寿命隧道涵洞用电缆，具备以下有益效果：本发明的导体绝缘层采用内外组合结构，内绝缘主要起到电气绝缘功能，外绝缘主要起到阻燃、耐磨抗开裂性能；本技术方案的防潮屏蔽层采用铝箔和聚乙烯组合粘接结构，既可以起到优异的径向阻水防潮作用，还可以防止电缆本体产生的电场对外部电磁信号的干扰；本技术方案的防蚁鼠联锁铠装层采用不锈钢带联锁铠装结构，该结构可以有效的组织下水道鼠蚁等生物侵害又能起到优异的抗冲击效果，这对于有落石风险的隧道、涵洞等特定场合尤为适宜，另外该结构形式可以满足电缆敷设弯曲半径的要求，这对于空间狭小，敷设环境有限的场合，无疑是最为合适的产品；本技术方案的阻燃外护层采用辐照交联无卤低烟阻燃聚烯烃，这种材料环保安全，又采用电子加速器方法进行辐射交联，使得交联后材料热延伸可以控制在20%以内，超高的交联度赋予了外护套优异的耐磨、耐油污、泥浆腐蚀的功能，另外材料中超高的阻燃剂含量使得在发生火灾时也可以起到优异的阻燃作用，本电缆具有高寿命、防潮、防蚁鼠、阻燃等性能集于一体的优势特点，可广泛应用在隧道、涵洞、人防工程中。
附图说明
图1为本发明结构示意图。
图中附图标记为：1.导体；2.内绝缘层；3.外绝缘层；4.填充层；5.防潮屏蔽层；6.防蚁鼠联锁铠装层；7.阻燃外护层。
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。
如图1所示，本发明提供一种技术方案：一种高寿命隧道涵洞用电缆，包括导体1、内绝缘层2、外绝缘层3、填充层4、防潮屏蔽层5、防蚁鼠联锁铠装层6和阻燃外护层7，所述导体1设置有三个且相互倚靠成三角型排列在一起；所述导体1的外壁上均包裹有内绝缘层2；所述内绝缘层2的外部设置有外绝缘层3；所述内绝缘2采用辐照交联聚乙烯材料制成，所述外绝缘3采用阻燃辐照交联聚烯烃材料制成；三个所述导体的外绝缘层3外部采用防潮屏蔽层5包裹在一起；所述防潮屏蔽层5与外绝缘层3之间形成的空隙设置有填充层4；所述防潮屏蔽层5采用铝箔和聚乙烯材料组合结构；所述填充层4采用阻水填充绳；所述防潮屏蔽层5的外壁还依次包裹设置有防蚁鼠联锁铠装层6和阻燃外护层7；所述防蚁鼠联锁铠装层6采用不锈钢带联锁铠装制成；所述阻燃外护层7采用辐照交联无卤低烟阻燃聚烯烃材料。所述导体1为先经拉丝再绞制而成多股铜丝绞合的导电线芯。所述所述防潮屏蔽层5采用铝箔和聚乙烯粘接组合结构的方式，先通过挤塑形成聚乙烯材料层，然后将铝箔纵向包覆在缆芯上，且铝箔的覆盖重叠率应达到30％以上。
尽管已经示出和描述了本发明的实施例，对于本领域的普通技术人员而言，可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由所附权利要求及其等同物限定。
Claims (3)
1.一种高寿命隧道涵洞用电缆，其特征在于：包括导体（1）、内绝缘层（2）、外绝缘层（3）、填充层（4）、防潮屏蔽层（5）、防蚁鼠联锁铠装层（6）和阻燃外护层（7），所述导体（1）设置有三个且相互倚靠成三角型排列在一起；所述导体（1）的外壁上均包裹有内绝缘层（2）；所述内绝缘层（2）的外部设置有外绝缘层（3）；所述内绝缘（2）采用辐照交联聚乙烯材料制成，所述外绝缘（3）采用阻燃辐照交联聚烯烃材料制成；三个所述导体的外绝缘层（3）外部采用防潮屏蔽层（5）包裹在一起；所述防潮屏蔽层（5）与外绝缘层（3）之间形成的空隙设置有填充层（4）；所述防潮屏蔽层（5）采用铝箔和聚乙烯材料组合结构；所述填充层（4）采用阻水填充绳；所述防潮屏蔽层（5）的外壁还依次包裹设置有防蚁鼠联锁铠装层（6）和阻燃外护层（7）；所述防蚁鼠联锁铠装层（6）采用不锈钢带联锁铠装制成；所述阻燃外护层（7）采用辐照交联无卤低烟阻燃聚烯烃材料；所述。
2.根据权利要求1所述的一种高寿命隧道涵洞用电缆，其特征在于：所述导体（1）为先经拉丝再绞制而成多股铜丝绞合的导电线芯。
3.根据权利要求1所述的一种高寿命隧道涵洞用电缆，其特征在于：所述所述防潮屏蔽层（5）采用铝箔和聚乙烯粘接组合结构的方式，先通过挤塑形成聚乙烯材料层，然后将铝箔纵向包覆在缆芯上，且铝箔的覆盖重叠率应达到30％以上。
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