Water-blocking fireproof special cable

Abstract

The invention discloses a water-blocking fireproof special cable including a plurality of wire cores, each wire core comprises a copper core, a first insulating layer and a second insulating layer, wherein the first insulating layer and the second insulating layer coat the copper core in order, the copper core is formed by twisting a plurality of copper conductors with corrugated sections, a ceramic wrapping tape, a first protective layer, a second protective layer, a steel tape armoring layer and a sheath are sequentially arranged outside the twisted wire cores, and water blocking ropes are loaded between the wire cores and the ceramic wrapping tape. The cable is simple in structure and reasonable in design, the double insulating layers and the double protective layers are arranged, so that the cable achieves good water-blocking and fireproof effects, meanwhile, under the condition of high stability, the high conductivity of the cable is guaranteed, and potential safety hazards in theuse of the cable are reduced.

Description

technical field [0001] The invention belongs to the technical field of special cables, and in particular relates to a special water-blocking and fire-proof cable. Background technique [0002] At present, ordinary cables on the market generally have a high temperature resistance of 90°C and have no water-blocking characteristics. In a humid or rainy environment, after water soaks into the cable, it will affect the conductor and insulation of the cable. As far as the conductor is concerned, the cable is in a thermally stable state during normal operation, and the temperature of the conductor is generally above 60°C. If there is moisture intrusion, it will cause the conductor to oxidize, which will increase the contact resistance between the single wires in the conductor and thus increase Conductor resistance increases the energy loss of the transmission line and even creates potential safety hazards. With the continuous development and progress of society, some special field...

AI Technical Summary

Problems solved by technology

[0002] At present, ordinary cables on the market generally have a high temperature resistance of 90°C and have no water-blocking characteristics. In a humid or rainy environment, after water soaks into the cable, it will affect the conductor and insulation of the cable.

As far as the conductor is concerned, the cable is in a thermally stable state during normal operation, and the temperature of the conductor is generally above 60°C. If there is moisture intrusion, it will cause the conductor to oxidize, which will increase the contact resistance between the single wires in the conductor and thus increase Conductor resistance, increase the energy loss of the transmission line, and even cause safety hazards

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