Two-core inflaming retarding flexible cable for communication power supply

Abstract

The invention discloses a two-core inflaming retarding flexible cable for a communication power supply and belongs to the technical field of wires and cables. The two-core inflaming retarding flexible cable comprises a pair of conducting cable cores which are respectively coated with an insulating layer, a wrapping tape layer wrapped on the conducting cable cores, filling layers and a protecting sheath layer or an inner lining layer, an armor layer and an armor layer outer protecting sheath, wherein cavities between the insulating layers and the wrapping tape layer are filled with the filling layers, the protecting sheath layer is located outside the wrapping tape layer, and the inner lining layer, the armor layer and the armor layer outer protecting sheath are located outside the wrapping tape layer in sequence. The two-core inflaming retarding flexible cable for the communication power supply is characterized in that the conducting cable cores are naked aluminum wire twisted conductors formed by twisting annealed naked aluminum wires with the diameter ranging from 0.2 mm to 1.15 mm, wherein the sectional area of each naked aluminum wire twisted conductor ranges from 1.5 mm<2> to 300 mm<2>, and the insulating layers, the protecting sheath layer and the armor layer outer protecting sheath are all made of inflaming retarding polyvinyl chloride. According to the two-core inflaming retarding flexible cable for the communication power supply, the flexibility performance is significantly improved, the minimum bend radius is four times the outer diameter of the cable, adaptability is good during laying construction, the manufacturing cost is significantly reduced, transportation, storage and construction costs are reduced, working intensity of workers can be relieved, and using safety can be ensured.

Description

technical field [0001] The invention belongs to the technical field of electric wires and cables, and in particular relates to a two-core flame-retardant flexible cable for a communication power supply. Background technique [0002] The flexible cable for communication power supply is a power supply connection line for communication facilities, and is widely used in power distribution systems such as telecommunication bureaus and distribution cabinets. Flexible cables for communication power supply not only require good flexibility to facilitate laying in narrow spaces or similar situations, but also require ideal flame retardancy to meet the requirements for use in occasions with strict fire ratings. [0003] Technical information about flexible cables for communication power supplies can be found in published Chinese patent documents. For example, CN201247632Y recommends "Flame-retardant, fire-resistant, shielded and anti-interference flexible cables for communication powe...

AI Technical Summary

Problems solved by technology

[0004] Although not limited to the flexible cables for communication power sources listed above, although each has corresponding technical effects, there are the following common shortcomings: First, since they are all made of twisted fine copper wires as conductors, and this conductor is known as Class 5 copper conductors, so the softness does not meet the expected requirements

And due to the poor softness, the bending radius is limited, so when laying in a narrow space, obstructed by immovable objects or even corners, it is easy to affect the construction speed; As the conductor of flexible cables, copper not only has blindness in the rational use of raw materials, but also leads to high manufacturing costs for flexible cables; The labor intensity of medium construction personnel is high, and the labor cost is high

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