飞行汽车机翼用特种电缆的结构设计

Structural Design of Special Cable for Flying Car

介绍了飞行汽车机翼用特种电缆的结构设计,包括导体和屏蔽层的结构设计、绝缘和护套挤出工艺设计,以及电缆成品特殊性能试验方法设计等。导体选用多股软铜线绞合,并另加铜箔丝作为加强元件;绝缘采用特殊制备的不同性能硅橡胶双层挤出,内层为阻燃高耐热硅橡胶,外层为阻燃高强度硅橡胶;屏蔽层由内外双层组成,内层为镀锡铜丝另加反弹丝和加强丝编织,外层为铝塑复合带绕包;护套采用特殊制备的不同性能硅橡胶双层挤出,内层为阻燃高耐热陶瓷化硅橡胶,外层为高强度高耐磨硅橡胶。采用该结构设计的电缆,不但提高了导体的抗扭转性和柔软性、提升了绝缘的耐超载性和阻燃性,也提高了屏蔽效能和电缆整体的抗扭转特性,耐扭转性能以及超载性能指标均符合飞行汽车供电系统的要求。

The structural design of special cable for flying car,including the structural design of conductor and shielding layer,the extrusion process design of insulation and sheath,and the design of special performance test method of cable products was introduced.The conductor was stranded with multiple strands of soft copper wire,and copper foil wire was added as the reinforcing element.The insulation adopted double layer co-extrusion of specially prepared silicone rubber with different properties.The inner layer was high flame retardant and heat resistant silicone rubber and the outer layer was flame retardant and high strength silicone rubber.The shielding layer was composed of inner and outer double layers,the inner layer was tinned copper wire woven with rebound reinforcing wire,and the outer layer was aluminum-plastic composite tape.The sheath adopted double layer coextrusion of specially prepared silicone rubber with different properties.The inner layer was flame retardant and heat resistant ceramic silicone rubber,and the outer layer was high strength and wear resistant silicone rubber.The cable designed with this structure not only improved the torsion resistance and flexibility of the conductor,overload resistance and flame retardancy of the insulation,but also improved the shielding efficiency and the overall torsion resistance of the cable.Torsion resistance and overload performance met the requirements of the power supply system of the flying car.