The utility model discloses a three-core composite high-performance insulated power cable, which comprises a cable coat, a buffer tube and a main conductor. The utility model is characterized in that a plurality of fire-proof isolation tubes are arranged inside the cable coat, an insulating layer is arranged on one side of the fire-proof isolation tube, and a braided shielding layer is arranged on one side of the insulating layer, and the braiding is arranged on the other side of the fire- One side of the weaving shielding layer is provided with a buffer layer, and one side of the buffer layer is provided with an elastically connected metal part, the elastically connected metal part is provided with a plurality of buffer tubes on one side, the inner part of the buffer tube is provided with an elastic rod, and the two sides of the elastic rod are provided with connecting rods, and the one side of the buffer tube is provided with a plurality of main lines. The outer side of the main conductor is provided with a main conductor protective layer, and one side of the main conductor protective layer is provided with a pulling rope. By setting a fire-proof isolation pipe, the inner temperature of the cable can be lowered through the liquid nitrogen inside the fire-proof isolation pipe, thus greatly reducing the possibility of the cable burning due to excessive temperature.
【技术实现步骤摘要】
一种三芯复合高性能绝缘电力电缆
本技术涉及一种电缆,尤其是涉及一种三芯复合高性能绝缘电力电缆。
技术介绍
电缆通常是由几根或几组导线(每组至少两根)绞合而成的类似绳索的电缆,每组导线之间相互绝缘,并常围绕着一根中心扭成,整个外面包有高度绝缘的覆盖层。电缆具有内通电,外绝缘的特征。有电力电缆、控制电缆、补偿电缆、屏蔽电缆、高温电缆、计算机电缆、信号电缆、同轴电缆、耐火电缆、船用电缆、矿用电缆、铝合金电缆等等。它们都是由单股或多股导线和绝缘层组成,用来连接电路。对于电缆在输电的过程中普遍存在以下两个问题,一方面,电缆尤其是容量相对较大的电力电缆,在通电运行过程中,客观上会产生大量的热量,而且受电缆结构及材料、外部环境等制约,产生的热量难以很快散发,从而引起电缆快速温升,而电缆升温不仅会导致电缆载流能力的下降,而且严重时会导致电缆的热击穿,同时加速了电缆老化,大大影响了电缆的使用寿命;另一方面,电缆在使用过程中受到外部挤压,容易导致导线断芯,从而影响信号和电力传输,同时电缆没有可支撑拉扯的构件,在机械拉扯中完全靠着自身张力,当一段电缆从电线缆绳上脱落时,电缆很有可能因为 ...
【技术保护点】
1.一种三芯复合高性能绝缘电力电缆,包括电缆外衣(2)、缓冲管(10)和主线芯导体(11),其特征在于,所述电缆外衣(2)内部设有若干个防火隔离管(1),所述防火隔离管(1)一侧设有绝缘层(3),所述绝缘层(3)一侧设有编织屏蔽层(4),所述编织屏蔽层(4)一侧设有缓冲层(5),所述缓冲层(5)一侧设有弹性连接金属件(6),所述弹性连接金属件(6),所述弹性连接金属件(6)一侧设有若干个缓冲管(10),所述缓冲管(10)内部设有弹性杆(8),所述弹性杆(8)两侧设有连接杆(7),所述缓冲管(10)一侧设有若干个主线芯导体(11),所述主线芯导体(11)外侧设有主线芯导体保护 ...
【技术特征摘要】
1.一种三芯复合高性能绝缘电力电缆,包括电缆外衣(2)、缓冲管(10)和主线芯导体(11),其特征在于,所述电缆外衣(2)内部设有若干个防火隔离管(1),所述防火隔离管(1)一侧设有绝缘层(3),所述绝缘层(3)一侧设有编织屏蔽层(4),所述编织屏蔽层(4)一侧设有缓冲层(5),所述缓冲层(5)一侧设有弹性连接金属件(6),所述弹性连接金属件(6),所述弹性连接金属件(6)一侧设有若干个缓冲管(10),所述缓冲管(10)内部设有弹性杆(8),所述弹性杆(8)两侧设有连接杆(7),所述缓冲管(10)一侧设有若干个主线芯导体(11),所述主线芯导体(11)外侧设有主线芯导体保护层(12),所述主线芯导体保护层(12)一侧设有拉扯绳(9)。2.根据权利要求...
【专利技术属性】
技术研发人员:李赛洋,
申请(专利权)人:新疆东风电缆集团有限公司,
类型:新型
国别省市:新疆,65
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