Intelligent mineral medium-voltage fireproof self-monitoring cable

Abstract

The invention relates to an intelligent mineral medium-voltage fireproof self-monitoring cable. The intelligent mineral medium-voltage fireproof self-monitoring cable comprises insulated phase wire cores, optical fiber units, a filling layer, a wrapped fireproof layer, a protective layer and an outer sheath; there are the plurality of insulated phase wire cores, the filling layer fills between theedge gaps of the insulated phase wire cores, the wrapped fireproof layer is wrapped at the outer portion of the filling layer, the protective layer is wrapped at the outer portion of the wrapped fireproof layer, the outer sheath is wrapped at the outer portion of the protective layer, and the optical fiber units are distributed at the middle slit after the insulated phase wire cores are strandedand the outer gaps between the adjacent insulated phase wire cores. Compared to the prior art, the cable achieves that the medium-voltage cable can be still used in the fire, the gases and smoke generated in the fire are non-toxic and non-polluting to increase the fire protection rescue time and intelligent monitoring requirements after the fire to guarantee the personal safety, reduce the property loss and reduce the cost of cable maintenance of cable fault position determination.

Description

technical field [0001] The invention relates to a cable, in particular to an intelligent mineral medium-voltage fireproof self-monitoring cable. Background technique [0002] With the continuous development of domestic cities and rapid economic growth, many high-rise buildings have sprung up. If low-voltage 0.6 / 1kV power distribution is adopted, the cable consumption, laying difficulty and workload will increase exponentially compared with ordinary buildings, and the occupied building space will be larger. Medium-voltage (6-35kV) cables are laid in the building for power distribution, which saves both material and energy. [0003] In densely populated high-rise buildings, once a fire occurs, the cables cannot provide power to the electrical equipment, which will inevitably have a great impact on the evacuation of personnel, resulting in major casualties and property losses. Therefore, the safety requirements for medium-voltage cables used in buildings higher. However, the...

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Problems solved by technology

[0005] The above-mentioned patent adopts cross-linked polyethylene insulation, and it is usually necessary to increase the inner sheath and steel tape armor structure when it withstands 950 °C for 180 minutes, and this structure greatly increases the outer diameter and weight of the cable, and this structure also reduces the protection performance. The melting point of polyethylene insulation and inner and outer shielding is around 160°C

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