The utility model discloses a low smoke halogen-free flame-retardant and fire-resistant computer and instrument signal cable, which includes a wire core, the wire core includes a conductor, the outer side of the conductor is covered with a synthetic mica tape fire-resistant layer or a ceramic silicon rubber composite tape fire-resistant layer, after the two conductors are twisted in pairs, the outer side is successively covered with a cross-linked polyethylene insulation layer, a polyester tape wrapping layer and a tinned copper wire braid The outer wall of the circular rubber frame is provided with a plurality of arc protrusions. The utility model adopts double-layer shielding structure, which has good shielding performance; each wire group is wrapped with polyester tape, and the shielding between wire groups is insulated with each other, and the split screen can be independently grounded without interference with each other; in case of fire, when the insulation, sheath and other fire-proof materials fail, the fire-resistant layer is sintered into a layer of insulation attached to the conductor under the condition of flame combustion, which can last for a short time. Power supply, maintain the power supply of fire rescue or lighting lines; excellent cable shielding, low capacitance, and explosion-proof performance.
【技术实现步骤摘要】
一种低烟无卤阻燃耐火计算机与仪表信号电缆
本技术涉及电缆
,尤其涉及一种低烟无卤阻燃耐火计算机与仪表信号电缆。
技术介绍
现有的计算机与仪表电缆如果在恶劣的环境下长期使用,性能太单一,其安全性能将很难保证。现有计算机与仪表电缆在日常运行时,经常会碰到承受载荷如悬挂、电磁干扰、传输信号模糊,因环境变化造成变质变硬等因素而影响正常的使用,抗拉能力不强,容易断裂或变形,阻燃耐火性能不够好。
技术实现思路
本技术目的就是为了弥补已有技术的缺陷,提供一种低烟无卤阻燃耐火计算机与仪表信号电缆。本技术是通过以下技术方案实现的:一种低烟无卤阻燃耐火计算机与仪表信号电缆,包括有线芯,所述的线芯包括有导体,在导体的外侧包覆有合成云母带耐火层或者陶瓷化硅橡胶复合带耐火层,将两根导体对绞后在外侧依次包覆有交联聚乙烯绝缘层、聚酯带包带层一、镀锡铜丝编织分屏蔽层和圆形橡胶框架,在圆形橡胶框架外壁设有多个弧形凸起,将一个线芯放中间、六个线芯放在中间线芯的外围再束绞成缆芯,在缆芯的外侧依次包覆有阻燃纤维填充层、聚酯带包带层二、镀锡铜丝总屏蔽层和低烟无卤聚烯烃外护套。所述的导体采用镀锡铜导体。本技术的优点是:本技术采用双层屏蔽结构,具有良好的屏蔽性能;各个线组间用聚酯带绕包,线组之间屏蔽相互绝缘,分屏可以独立接地,互不干扰;电缆在火灾情况下,绝缘和护套等防火材料失效时,耐火层在火焰燃烧情况下,烧结成一层绝缘附着在导体上,可以短时持续供电,维持火灾救援或照明线路供电;电缆屏蔽优良,低电容,并具有防爆 ...
【技术保护点】
1.一种低烟无卤阻燃耐火计算机与仪表信号电缆,其特征在于:包括有线芯,所述的线芯包括有导体,在导体的外侧包覆有合成云母带耐火层或者陶瓷化硅橡胶复合带耐火层,将两根导体对绞后在外侧依次包覆有交联聚乙烯绝缘层、聚酯带包带层一、镀锡铜丝编织分屏蔽层和圆形橡胶框架,在圆形橡胶框架外壁设有多个弧形凸起,将一个线芯放中间、六个线芯放在中间线芯的外围再束绞成缆芯,在缆芯的外侧依次包覆有阻燃纤维填充层、聚酯带包带层二、镀锡铜丝总屏蔽层和低烟无卤聚烯烃外护套。/n
【技术特征摘要】
1.一种低烟无卤阻燃耐火计算机与仪表信号电缆,其特征在于:包括有线芯,所述的线芯包括有导体,在导体的外侧包覆有合成云母带耐火层或者陶瓷化硅橡胶复合带耐火层,将两根导体对绞后在外侧依次包覆有交联聚乙烯绝缘层、聚酯带包带层一、镀锡铜丝编织分屏蔽层和圆形橡胶框架,在圆形橡胶框架外壁设有多个弧...
【专利技术属性】
技术研发人员:董文锋,荔建荣,洪生华,柏建华,陈金柱,
申请(专利权)人:安徽吉安特种线缆制造有限公司,
类型:新型
国别省市:安徽;34
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