Tubular ventilation cooling type five-core flexible cable and manufacturing method thereof

Abstract

The invention belongs to the technical field of cables, and particularly relates to a tubular ventilation cooling type five-core flexible cable. The tubular ventilation cooling type five-core flexible cable comprises five insulated conductors distributed around a filling element, a belting layer that wraps the insulated conductors and an outer sheath that wraps the belting layer, and each insulated conductor consists of a conductor and an insulating layer that wraps the conductor. The tubular ventilation cooling type five-core flexible cable is characterized in that the filling element is of a pipeline structure having a through hole inside, the outer diameter of the pipeline is 6 to 20mm, and the wall thickness of the pipeline is 0.6 to 0.8mm. The invention also discloses a manufacturing method of the cable. The tubular ventilation cooling type five-core flexible cable provided by the invention has the beneficial technical effects of relatively slow temperature rise, aging resistance, relatively high current-carrying capacity, small conductor consumption and the like.

Description

technical field [0001] The invention belongs to the technical field of cables, in particular to a tubular ventilated and cooled five-core flexible cable and a manufacturing method thereof. Background technique [0002] At present, flexible cables are used in domestic communication equipment rooms to supply power to communication equipment rooms. Generally, many cables are laid together. In the prior art, five-core flexible cables such as figure 1 As shown, it is composed of five insulated wires distributed around the filling element 3, a tape layer 4 covering the insulated wires, and an outer sheath 5 covered outside the tape layer, wherein each insulated wire It is composed of a conductor 1 and an insulating layer 2 covering the conductor, and the filling element is a plastic filling rope. [0003] The above-mentioned cables are generally laid in the communication room. Because the cable transmits low-voltage power, the cable core heats up severely. Especially in summer, ...

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Problems solved by technology

[0003] The above-mentioned cables are generally laid in the communication room. Because the cable transmits low-voltage power, the cable core heats up seriously. Especially in summer, excessive temperature will accelerate the aging of the sheath, shorten the service life of the cable, and even cause fire and interruption of communication.

According to data records, 26% of fires are caused by cable insulation aging; conductors will generate heat during the power supply process, especially in summer, the heat generated will increase the indoor temperature, so a larger power air conditioner is usually used to cool down, but the air conditioner The temperature can only be cooled from the periphery, and the heat still needs to be dissipated to the outside through the insulation and sheath of the cable. In this way, the insulation and sheath of the cable must withstand higher temperatures, which will accelerate the aging speed of the insulation and sheath. Generally, every increase in temperature 10 degrees, the life of the plastic will be cut in half

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