CN107316678A - 耐高温电缆 - Google Patents
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Abstract
本发明公开了一种耐高温电缆，其要点是：包括主线芯、绕包层、屏蔽层、第二绕包层和护套；主线芯有2根，2根主线芯1的结构相同，2根主线芯沿其各自径向由内向外依次设有导体和绝缘层；2根主线芯是绞合成缆；导体由若干根单丝直径相同的镀金属铜丝同向束绞而成，相邻层反向绞合；绝缘层由聚醚醚酮制成；绝缘层挤包在导体的外部；绕包层由云母带绕包在绞合在一起的2根主线芯外部形成；屏蔽层由直径为0.1毫米至0.3毫米的镀镍铜丝编织在绕包层的外部而成；第二绕包层由云母带绕包在屏蔽层外形成；护套采用不锈钢带材料制成，不锈钢带联锁铠装在第二绕包层外。
Description
技术领域
本发明涉及舰船用电缆，具体是一种用于舰船上用的耐高温电缆。
背景技术
目前舰上电缆基本采用阻燃聚烯烃、乙丙橡胶等低烟无卤材料，但这类材料的耐温等级不高，长期工作温度一般125℃及以下，不能满足坞舱内的高于125℃的高温和交变温环境需求。
目前舰坞舱内耐高温特种电缆主要采用氟塑料绝缘高温电缆。但由于氟塑料中含氟元素，氟在燃烧时释放有毒的HF气体，属于剧毒物质范畴，氟塑料电缆燃烧后的毒性是PVC电缆的1.5倍，是无卤电缆的5倍。危及到人生命和周边设备，不能满足更高的无毒要求。
发明内容
本发明的目的是提供一种低烟、无毒的耐高温电缆。
实现本发明目的的基本技术方案是: 一种耐高温电缆，其结构特点是：包括主线芯、绕包层、屏蔽层、第二绕包层和护套；主线芯有2根， 2根主线芯1的结构相同，2根主线芯沿其各自径向由内向外依次设有导体和绝缘层；2根主线芯是绞合成缆；导体由若干根单丝直径相同的镀金属铜丝同向束绞而成，相邻层反向绞合；绝缘层由聚醚醚酮制成；绝缘层挤包在导体的外部；绕包层由云母带绕包在绞合在一起的2根主线芯外部形成；屏蔽层由直径为0.1毫米至0.3毫米的镀镍铜丝编织在绕包层的外部而成；第二绕包层由云母带绕包在屏蔽层外形成；护套采用不锈钢带材料制成，不锈钢带联锁铠装在第二绕包层外。
以上述基本技术方案为基础的技术方案是：绝缘层的厚度为0.1毫米至0.4毫米；绝缘层的抗张强度为80Mpa到110Mpa。
以上述相应技术方案为基础的技术方案是：绕包层的绕包的搭盖率为20%至35%；绕包层的厚度为0.3毫米至0.6毫米。
以上述各相应技术方案为基础的技术方案是：屏蔽层的编织覆盖率不小于85%。
以上述各相应技术方案为基础的技术方案是：第二绕包层的绕包的搭盖率为20%至35%；第二绕包层的厚度为0.3毫米至0.6毫米。
本发明具有积极的效果：（1）本发明的耐高温电缆结构简单，电缆具备低烟、无卤、阻燃、低毒、耐油等性能，能满足电缆长期在260℃的温度下使用，同时具有较好的耐磨以及耐湿热、霉菌、盐雾的特性。
（2）本发明的耐高温电缆的主线芯的导体采用镀镍铜丝绞合，有效避免了裸铜在260℃环境中工作时氧化。
（3）本发明的耐高温电缆的主线芯的绝缘层采用聚醚醚酮，聚醚醚酮具有优异的电性能，耐环境性能（耐盐雾、霉菌、耐湿热等）以及低烟无卤低毒等特点，满足电缆使用温度为260℃的要求，机械强度达到80Mpa以上。
（4）本发明的耐高温电缆为了满足在260℃高温环境下的长期使用要求，避免铜丝氧化，屏蔽层采用镀镍铜丝编织构成，镀镍铜丝单丝直径从0.10mm到0.30mm。
（5）本发明的耐高温电缆的护套采用316不锈钢带联锁铠装的形式，既满足了工作温度的要求，又对产品提供了更好的机械保护，同时使得产品更易于敷设。护套的柔韧性试验最小弯曲半径为4倍的电缆直径，弯曲后联锁铠装处保证缆芯不露出；护套经受136kg重物产生的张力，持续时间5min，联锁铠装保证不露出缆芯；护套承受440N的张力，持续时间5min，电缆的永久性伸长不大于75mm。
附图说明
图1为本发明的耐高温电缆的横截面的结构示意图。
上述附图中的标记如下：
主线芯1，导体11，绝缘层12，
绕包层2，屏蔽层3，第二绕包层4，护套5。
具体实施方式
（实施例1）
见图1，本实施例的耐高温电缆包括主线芯1、绕包层2、屏蔽层3、第二绕包层4和护套5。
见图1，主线芯1有2根， 2根主线芯1的结构相同，2根主线芯1沿其各自径向由内向外依次设有导体11和绝缘层12。2根主线芯1是绞合成缆。
见图1，导体11由若干根单丝直径相同的镀金属铜丝同向束绞，相邻层反向绞合而成，本实施例采用19根单丝标称直径0.16毫米镀锡铜丝同向束绞，相邻层反向绞合而成，最外层为左向。
见图1，绝缘层12由聚醚醚酮制成。绝缘层12挤包在导体11的外部。绝缘层12的厚度为0.1毫米至0.4毫米，本实施例为0.18毫米。绝缘层12的抗张强度为80Mpa到110Mpa，本实施例为90Mpa。在空气烘箱中进行老化（温度为290℃±2℃，时间为120h），老化后要求：1.绝缘线芯不开裂；2.绝缘经受2.2kV 5min耐压不击穿；绝缘层12的酸气含量不大于0.5，烟指数不大于25，毒性指数不大于1.5，电导率≤10 us/mm。
见图1，绕包层2由云母带绕包在绞合在一起的2根主线芯1外部形成，绕包的搭盖率为20%至35%，本实施例为25%。绕包层2的厚度为0.3毫米至0.6毫米，本实施例为0.42毫米。
见图1，屏蔽层3由直径为0.1毫米至0.3毫米的镀金属铜丝编织而成，本实施例为0.15毫米的镀镍铜丝，且位于绕包层2的外部，其编织覆盖率不小于85%，本实施例为90%。
见图1，第二绕包层4由云母带绕包在屏蔽层3外形成，绕包的搭盖率为20%至35%，本实施例为25%。第二绕包层4的厚度为0.3毫米至0.6毫米，本实施例为0.42毫米。
见图1，护套5采用不锈钢带材料制成，本实施例采用316不锈钢带。不锈钢带联锁铠装在第二绕包层4外。护套5的柔韧性试验最小弯曲半径为4倍的电缆直径，弯曲后联锁铠装处不应露出缆芯；护套5经受136kg重物产生的张力，持续时间5min，联锁铠装保证不露出缆芯；护套5承受440N的张力，持续时间5min，电缆的永久性伸长不大于75mm。
以上实施例仅供说明本发明之用，而非对本发明的限制，有关技术领域的技术人员在不脱离本发明的精神和范围的情况下，还可以作出各种变换和变化，具体应用过程中还可以根据上述实施例的启发进行相应的改造，因此所有等同的技术方案均应该归入本发明的专利保护范围之内。
Claims (5)
1.一种耐高温电缆，其特征在于：包括主线芯、绕包层、屏蔽层、第二绕包层和护套；
主线芯有2根， 2根主线芯1的结构相同，2根主线芯沿其各自径向由内向外依次设有导体和绝缘层；2根主线芯是绞合成缆；导体由若干根单丝直径相同的镀金属铜丝同向束绞而成，相邻层反向绞合；绝缘层由聚醚醚酮制成；绝缘层挤包在导体的外部；绕包层由云母带绕包在绞合在一起的2根主线芯外部形成；屏蔽层由直径为0.1毫米至0.3毫米的镀镍铜丝编织在绕包层的外部而成；第二绕包层由云母带绕包在屏蔽层外形成；护套采用不锈钢带材料制成，不锈钢带联锁铠装在第二绕包层外。
2.根据权利要求1所述的耐高温电缆，其特征在于：绝缘层的厚度为0.1毫米至0.4毫米；绝缘层的抗张强度为80Mpa到110Mpa。
3.根据权利要求1所述的耐高温电缆，其特征在于：绕包层的绕包的搭盖率为20%至35%；绕包层的厚度为0.3毫米至0.6毫米。
4.根据权利要求1所述的耐高温电缆，其特征在于：屏蔽层的编织覆盖率不小于85%。
5.根据权利要求1所述的耐高温电缆，其特征在于：第二绕包层的绕包的搭盖率为20%至35%；第二绕包层的厚度为0.3毫米至0.6毫米。
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| PCT/CN2017/113177 WO2018209919A1 (zh) | 2017-05-18 | 2017-11-27 | 耐高温电缆 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018209919A1 (zh) * | 2017-05-18 | 2018-11-22 | 常州船用电缆有限责任公司 | 耐高温电缆 |
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| CN204348371U (zh) * | 2014-12-12 | 2015-05-20 | 安徽省巢湖海兴电缆集团有限公司 | 一种耐高温金属屏蔽型机车车辆电缆 |
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| RU124977U1 (ru) * | 2012-05-15 | 2013-02-20 | Российская Федерация, от имени которой выступает Министерство промышленности и торговли Российской Федерации (Минпромторг России) | Огнестойкий кабель (варианты) |
| CN202976953U (zh) * | 2012-12-31 | 2013-06-05 | 安徽新亚特电缆集团有限公司 | 无卤低烟阻燃耐热防火控制电缆 |
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| WO2018209919A1 (zh) * | 2017-05-18 | 2018-11-22 | 常州船用电缆有限责任公司 | 耐高温电缆 |
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