Intelligent energy-saving flexible mineral insulated fireproof cable with reduced size and processing method thereof

Abstract

The invention provides an intelligent energy-saving flexible mineral insulated fireproof cable with a reduced size. The cable comprises main wire cores which comprise conductors and inorganic mineralinsulating tapes, first halogen-free flame-retardant tape heat insulating layers and insulating layers sequentially wrapped around the conductors. Three main wire cores and three center wire cores aresymmetrically twisted to form a cable which is filled with an inorganic mineral heat-dissipating fire-proof layer, the inorganic mineral heat-dissipating fire-proof layer is wrapped in a second halogen-free flame-retardant tape heat insulating layer, the second halogen-free flame-retardant tape heat insulating layer is wrapped in a concentric conductor grounding wire core which is wrapped in a third halogen-free flame-retardant tape heat insulating layer, the third halogen-free flame-retardant tape heat insulating layer is extruded in a flame-retardant inner sheath, an interlocking armored metal sheath is outside the flame-retardant inner sheath, and the interlocking armored metal sheath is extruded in a flame-retardant outer sheath. According to the intelligent energy-saving flexible mineral insulated fireproof cable with the reduced size, the characteristic that the inorganic mineral insulating tapes are easy to be damp is solved, the electrical insulation performance is excellent,after the main wire cores are twisted to form the cable, the cable is filled with the inorganic mineral heat-dissipating fire-proof layer, the functions of cooling and fire isolation are achieved, andthe internal temperature rise of the cable is delayed.

Description

technical field [0001] The invention relates to the field of cables, in particular to a size-reduced intelligent energy-saving flexible mineral insulated fireproof cable and a processing method thereof. Background technique [0002] With the rapid development of the economy, subways, airports, ships, high-rise buildings, information industry and other key engineering personnel and equipment-intensive places have higher and higher requirements for fire protection. In order to reduce electrical fires, or in the case of fire damage To cause power cables to cause secondary accidents, relevant national units and scientific research institutes have actively issued a number of cable flame-retardant and fire-resistant standards and specifications, and cable companies have developed a variety of flame-retardant and fire-resistant cables to meet market demand. However, the fireproof cables currently on the market have a large outer diameter, are not flexible when laid, and are even ve...

AI Technical Summary

Problems solved by technology

However, the fire-resistant cables currently on the market have a large outer diameter, are not flexible when laid, and are even very difficult to bend, making it very difficult to lay in a small space in a power distribution cabinet

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