An inorganic mineral insulated flexible fireproof cable

Abstract

The invention discloses an inorganic mineral insulated flexible fireproof cable. The inorganic mineral insulated flexible fireproof cable comprises a plurality of cable cores. Each cable core comprises an electrical conductor and a ceramic composite tape coating the electrical conductor, the ceramic composite tapes are coated with metal foil material coatings which are selected from one in the group of copper, nickel, nickel alloy, titanium, steel or stainless steel. The cable cores are coated with a first mica tape, the first mica tape is externally provided with a flameproof fabric, an insulating refractory layer is arranged at the outer portion of the flameproof fabric, a second mica tape is arranged at the outer portion of the insulating refractory layer, a basalt fiber fireproof layeris arranged on the outer layer of the second mica tape, and a jacket layer is arranged at the outer layer of the basalt fiber fireproof layer. The inorganic mineral insulated flexible fireproof cableemploys a multi-layer fireproof layer design, has a good heat and fire resistance at a high temperature, and can maintain the state of the cable at the high temperature for a long time.

Description

technical field [0001] The invention relates to the field of cables, in particular to an inorganic mineral insulated flexible fireproof cable. Background technique [0002] A cable is a line used for power connection in a building. There are fireproof cables with fireproof performance in the existing cables. This kind of cable includes an outer protective sheath and a plurality of internal wires. , protective and shielding protective layer, and fireproof materials or refractory materials will be set between the wires to prolong the service life of the cable in case of fire, but because the fireproof material filled in the cable has poor fire resistance, other protection in the cable The layer cannot withstand high temperature, and the cable will be unable to use normally due to the increase in resistance within a short time after the fire, or even burn out and cannot be used, especially in high-rise buildings where elevators are used, and equipment is required to maintain th...

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Problems solved by technology

[0002] A cable is a circuit used for power connection in a building. There are fireproof cables with fireproof performance in the existing cables. This kind of cable includes an outer protective sheath and multiple wires inside. , protective and shielding protective layer, and fireproof materials or refractory materials will be set between the wires to prolong the service life of the cable in case of fire, but because the fireproof material filled in the cable has poor fire resistance, other protection in the cable The layer cannot withstand high temperature, and the cable will be unable to use normally due to the increase in resistance within a short period of time after the fire, or even burn out and cannot be used, especially in high-rise buildings that use elevators and need to use instruments to maintain the lives of patients. In hospital places and some places related to the normal operation of the country and people's livelihood, if the power failure means irreparable loss, so in order to ensure the complete evacuation and protection of instruments, personnel and other important objects, it is necessary to develop a more long-lasting fireproof cable

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