CN107680723A - 一种自承载低压同轴复合电缆 - Google Patents
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- H—ELECTRICITY
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- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/22—Metal wires or tapes, e.g. made of steel
- H01B7/221—Longitudinally placed metal wires or tapes
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- H—ELECTRICITY
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- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
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- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
- H01B7/2825—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable using a water impermeable sheath
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- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
- H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
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Abstract
本发明公开了一种自承载低压同轴复合电缆,包括缆芯,所述的缆芯由一根通信光缆、三根设置在通信光缆周围的绝缘线芯以及三根承载钢芯绞合而成;在缆芯的空隙处设有碳纤维布带填充层,缆芯外设有扎紧带,在扎紧带外缠绕外导体层,在外导体层外设有聚氨酯内护套,在内护套外编织与外导体层同心的承载加强层,在承载加强芯外设有铝酸纤维布带,在铝酸纤维布带外挤包聚氨酯外护套。本发明具有抗拉伸、张力强、撕裂强度高、耐磨损、耐折曲、耐穿透、耐低温、无毒无味、耐水解等性能。
Description
技术领域
本发明属于电线电缆领域,具体是指一种自承载低压同轴复合电缆。
背景技术
当今世界已步入信息时代,信息已成为经济发展的战略资源和独特的生产要素,以远程通信网络、计算机、视像等多媒体终端相结合建立起来的现代信息传输系统和完备的信息服务体系,已成为一个国家或地区经济发达程度的重要标志。同轴电缆是信息传输中的一种重要品种,主要用作无线电发射或接收设备的天线馈线以及各种通信、电子设备的机内连线或相互连接线。同轴电缆由内导体层、绝缘层、外导体层和护套层组成,内导体层和外导体层通常截面很小,自承载性能差,尤其是电缆在不埋地的工况下使用时,由于承载性能差,电缆自身重量会使得电缆导体拉断,同时在在施工时也容易损伤细小电缆导体。现有技术菜采用支撑架对电缆进行支撑,通过增加支撑架的形式来保护同轴电缆,具有一定的效果,但增加了敷设成本和时间,加之电缆本身承载性能差,施工过程中难免会因为不慎操作造成电缆的线芯损坏的问题。抗干扰性差,当电缆本身输送的电流中含有高次谐波分量时,电缆会对其周围的电子设备产生电磁干扰;反之,外界的电磁干扰也会耦合到电缆芯线上,对与电缆相接的各种电气产生电磁干扰;相-零短路阻抗大,使线路单相短路电流值降低,影响首端保护装置在单相短路时的灵敏度,导致危及整个系统的电气设备和人身安全;沿高层建筑内敷设的电缆因无屏蔽层,难免在强大雷电流的电磁效应作用下产生过压,造成绝缘层的损坏或者被击穿。
发明内容
本发明要解决的技术问题是提供一种自承载低压同轴复合电缆。
本发明所述的一种自承载低压同轴复合电缆,包括缆芯,所述的缆芯由一根通信光缆、三根设置在通信光缆周围的绝缘线芯以及三根承载钢芯绞合而成;在缆芯的空隙处设有碳纤维布带填充层,缆芯外设有扎紧带,在扎紧带外缠绕外导体层,在外导体层外设有聚氨酯内护套,在内护套外编织与外导体层同心的承载加强层,在承载加强芯外设有铝酸纤维布带,在铝酸纤维布带外挤包聚氨酯外护套。
所述的绝缘线芯由中心钢芯、设置在钢芯外的铝合金导体、挤包在铝合金导体外的硅橡胶绝缘层以及挤包在硅橡胶绝缘层外的阻水带构成。
所述的承载加强层由半弧形钢带与多根圆形钢带组合而成。
所述的外导体层由多根镀锌铜丝缠绕而成并反向疏绕铜带扎紧。
所述的聚氨酯外护套为聚氨酯软管。
本发明的有益效果在于:
1、本发明在缆芯外实现同心导体结构,使中性线或接地线既作为中性线或接地线,又可以作屏蔽线使用,适用于交流额定电压0.6/1kV及以下要求抗较强电磁干扰、雷击环境下的电力传输;
2、本发明具有很强的自承载性能,电缆的内导体中心层设有一根中心承载芯,内导体的受力点集中在中心承载芯上,电缆在收放卷绕过程中,保护了内导体退火铜丝,并且不易折断;外导体外还设有承载加强层,整个电缆的外力受力点集中在承载加强层,机械强度高、抗压性能好,防潮及密封性好,而内、外导体处于同心位置,电磁能量局限在内外导体之间的介质内传播,因此具有衰减小,屏蔽性能高;
3、本发明内外护套采用聚氨酯,具有抗拉伸、张力强、撕裂强度高、耐磨损、耐折曲、耐穿透、耐低温、无毒无味、耐水解等性能,并具有很好的回弹性且使用寿命长。
附图说明
图1为本发明的结构示意图。
具体实施方式:
如图1所示,本发明所述的一种自承载低压同轴复合电缆,包括缆芯,所述的缆芯由一根通信光缆、三根设置在通信光缆6周围的绝缘线芯以及三根承载钢芯5绞合而成;在缆芯的空隙处设有碳纤维布带填充层7,缆芯外设有扎紧带8,在扎紧带外缠绕外导体层9,在外导体层外设有聚氨酯内护套10,在内护套外编织与外导体层同心的承载加强层11,在承载加强芯外设有铝酸纤维布带12,在铝酸纤维布带外挤包聚氨酯外护套13,所述的聚氨酯外护套为聚氨酯软管。
所述的绝缘线芯由中心钢芯1、设置在钢芯外的铝合金导体2、挤包在铝合金导体外的硅橡胶绝缘层3以及挤包在硅橡胶绝缘层外的阻水带4构成。
所述的外导体层由多根镀锌铜丝14缠绕而成并反向疏绕铜带15扎紧。
所述的承载加强层由半弧形钢带16与多根圆形钢带17组合而成。
本发明提供了自承载低压同轴复合电缆的形式和实施方法,以上所述仅是本发明的优选实施方法,应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明原理的前提下,还可以作出若干改进,这些改进也应视为本发明的保护范围。
Claims (5)
1.一种自承载低压同轴复合电缆,包括缆芯,其特征在于:所述的缆芯由一根通信光缆、三根设置在通信光缆周围的绝缘线芯以及三根承载钢芯绞合而成;在缆芯的空隙处设有碳纤维布带填充层,缆芯外设有扎紧带,在扎紧带外缠绕外导体层,在外导体层外设有聚氨酯内护套,在内护套外编织与外导体层同心的承载加强层,在承载加强芯外设有铝酸纤维布带,在铝酸纤维布带外挤包聚氨酯外护套。
2.根据权利要求1所述的自承载低压同轴复合电缆,其特征在于:所述的绝缘线芯由中心钢芯、设置在钢芯外的铝合金导体、挤包在铝合金导体外的硅橡胶绝缘层以及挤包在硅橡胶绝缘层外的阻水带构成。
3.根据权利要求1所述的自承载低压同轴复合电缆,其特征在于:所述的承载加强层由半弧形钢带与多根圆形钢带组合而成。
4.根据权利要求1所述的自承载低压同轴复合电缆,其特征在于:所述的外导体层由多根镀锌铜丝缠绕而成并反向疏绕铜带扎紧。
5.根据权利要求1所述的自承载低压同轴复合电缆,其特征在于:所述的聚氨酯外护套为聚氨酯软管。
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CN102800407A (zh) * | 2012-08-21 | 2012-11-28 | 江苏华亚电缆有限公司 | 一种同心式导体低压电缆 |
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CN103474154A (zh) * | 2013-08-23 | 2013-12-25 | 安徽埃克森科技集团有限公司 | 一种同心导体电力电缆 |
CN203607153U (zh) * | 2013-10-22 | 2014-05-21 | 安徽天康股份有限公司 | 阻燃耐火光电复合缆 |
CN207993528U (zh) * | 2017-09-30 | 2018-10-19 | 无锡市长城电线电缆有限公司 | 一种自承载低压同轴复合电缆 |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN201904163U (zh) * | 2010-12-29 | 2011-07-20 | 江苏远洋东泽电缆股份有限公司 | 港机用光纤复合中压卷盘电缆 |
CN102800407A (zh) * | 2012-08-21 | 2012-11-28 | 江苏华亚电缆有限公司 | 一种同心式导体低压电缆 |
CN203013368U (zh) * | 2012-11-05 | 2013-06-19 | 安徽金桥电缆有限公司 | 一种光电复合型电缆 |
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