CN218730051U - Low-smoke halogen-free flame-retardant fire-resistant shielding control cable - Google Patents

Abstract

The utility model discloses a fire-retardant fire-resistant shielding control cable of low smoke and zero halogen, this cable adopt the copper core conductor, overlap with double-deck mica tape on the conductor around the package, crowded low smoke and zero halogen fire-retardant polyolefin insulating layer, with heart yearn transposition stranding, wind ceramic composite band around the package earlier, twine one deck polyester area again, weave copper wire shielding layer, the oversheath adopts low smoke and zero halogen fire-retardant polyolefin material. The utility model discloses have and be difficult to catch fire and have the separation to end or delay the ability of stretching, in addition, in case catch fire, it has characteristics such as no halogen, low cigarette, nontoxic, noncorrosive, is applicable to fields such as high-rise building, hotel, hospital, subway, nuclear power station, tunnel, power plant, mine, petroleum, chemical industry.

Description

Low-smoke halogen-free flame-retardant fire-resistant shielding control cable

Technical Field

The utility model relates to the technical field of cables, especially, relate to a fire-retardant fire-resistant shielding control cable of low smoke and zero halogen.

Background

With the development of industrial technology, people have higher requirements on the safety and environmental protection of electric wire and cable products in production and life, the traditional electric wire and cable is easy to burn rapidly in case of fire due to no good flame retardant and fire resistance, so that the circuit is short-circuited, and the insulating and sheathing materials of the traditional electric wire and cable contain a large amount of halogen polymers and halogen flame retardants, so that a large amount of smoke and harmful gases are released, have strong irritation and are easy to cause casualties. Therefore, under the background of new development, further technical research needs to be increased, the structural design of the cable needs to be perfected and optimized, and a novel low-smoke halogen-free flame-retardant fire-resistant shielding control cable with stronger technical performance needs to be developed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a fire-retardant fire-resistant shielding control cable of low smoke and zero halogen in order to remedy prior art's defect.

The utility model discloses a realize through following technical scheme:

the utility model provides a fire-retardant fire-resistant shielding control cable of low smoke and zero halogen, including the conductor, the cladding has the mica tape around the covering on the conductor, at the mica tape crowded package low smoke and zero halogen fire-retardant polyolefin insulating layer outside around the covering and constitute insulation core, strand many insulation core into the cable core, around the compound area of pottery package in the cable core outside, twine one deck polyester tape outside the compound area of pottery, the copper wire shielding layer has been woven at the polyester tape outside, crowded package low smoke and zero halogen fire-retardant polyolefin oversheath outside the copper wire shielding layer.

The conductor is a copper core conductor.

The mica tape lapping layer is a double-layer mica tape overlapping lapping layer.

The utility model has the advantages that: the utility model discloses have and be difficult to catch fire and have the separation to end or delay the ability of stretching, in addition, in case catch fire, it has characteristics such as no halogen, low cigarette, nontoxic, noncorrosive, is applicable to fields such as high-rise building, hotel, hospital, subway, nuclear power station, tunnel, power plant, mine, petroleum, chemical industry.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

As shown in fig. 1, the low-smoke halogen-free flame-retardant fire-resistant shielding control cable adopts a copper core conductor 1, a double-layer mica tape is overlapped on the copper core conductor 1 to wind a wrapping layer 2, a low-smoke halogen-free flame-retardant polyolefin insulating layer 3 is extruded, core wires are twisted into a cable, a ceramic composite tape 4 is wound firstly, a polyester tape 5 is wound on one layer, a copper wire shielding layer 6 is woven, and an outer sheath 7 is made of a low-smoke halogen-free flame-retardant polyolefin material.

The utility model provides a fire-retardant fire-resistant shielding control cable of low smoke and zero halogen, there is not steamed low cigarette, low steamed low cigarette characteristic, when the conflagration takes place, it is slow to stretch speed, and smoke concentration is low, and the visibility is high, and harmful gas release amount is little, and the personnel of being convenient for withdraw. The corrosion of combustion gas is small, the damage to instruments and equipment is avoided, and the characteristics of low halogen and no halogen are realized, so that the aging resistance, ultraviolet resistance and other irradiation performances of the cable material are greatly improved, and the service life of the cable is prolonged. The method is suitable for the fields of high-rise buildings, hotels, hospitals, subways, nuclear power stations, tunnels, power plants, mines, petroleum, chemical industry and the like. Besides the characteristics of the low-smoke halogen-free flame-retardant cable, the cable can also meet the power supply capacity of a line under the fire condition. The fire-proof power supply line is mainly used for fire alarm, fire-fighting equipment, smoke exhaust equipment, emergency facilities for emergency passage transportation, illumination and the like.

The cable adopts a copper core conductor, double-layer mica tapes are lapped and wrapped on the conductor in an overlapping mode, the mica tapes are double-sided synthetic mica tapes, synthetic mica paper is used as a base material, glass fiber cloth is used as a double-sided reinforcing material, and the mica tapes are bonded by a silicone adhesive, so that the fireproof performance is particularly excellent, and the fireproof cable is the most ideal preferred material for manufacturing fireproof wires and cables. The mica layer is extruded with 90-degree thermoplastic low-smoke halogen-free flame-retardant polyolefin insulating material, which is prepared by taking polyolefin as a main raw material, adding functional auxiliaries such as halogen-free and non-toxic flame retardant, smoke suppressor, antioxidant and the like and processing aids, banburying, extruding and granulating, and has good processing performance, insulating performance and physical and mechanical properties. The insulated core wires are stranded in a cable, the inner layer is wrapped with a ceramic composite tape, the outer layer is wrapped with a polyester tape, the ceramic composite tape is made of ceramic fireproof and fire-resistant silicon rubber and high-temperature-resistant glass fiber cloth serving as base materials and can be sintered into a hard heat-insulating material of a ceramic shell, and the ceramic hard shell can play a good role in inflaming retarding, fire resistance, fire prevention and fire isolation under the condition of fire. The copper wire shielding layer is woven outside the cable core, so that current or signals are protected from external electromagnetic interference, interference of an electromagnetic field generated by the cable core to the surrounding environment and current circulation faults are avoided, and the service performance of the cable is improved. The outer sheath is made of low-smoke halogen-free flame-retardant polyolefin material, the material is formed by combining polyolefin blending resin, flame-retardant fillers of aluminum hydroxide and magnesium hydroxide and a proper amount of antioxidant added for prolonging the heat-resistant service life, and a certain smoke inhibitor is added for reducing the smoke amount during combustion. When the flame-retardant filler is burnt by external flame, the flame-retardant fillers aluminum hydroxide and magnesium hydroxide release crystal water to absorb a large amount of heat, and simultaneously, dehydration reaction generates a large amount of water vapor which can dilute combustible gas to prevent combustion, and a layer of infusible and non-combustible oxide hard shell is formed on the surface of the information to block a channel for the reaction of a high polymer and external hot oxygen, so that the flame-retardant and self-extinguishing effects are finally achieved.

When a fire accident happens, the cable can block and delay flame from diffusing and extending along the wires and cables, reduces the extension of the fire range of the wires and cables, and has the characteristics of self-extinguishing after firing and the advantages of low toxicity and low smoke. The product can be under the condition that external flame still burns, insists on the normal operating of certain time, keeps electric wire and cable circuit integrality and keeps the normal operating of line equipment, effectively reduces the loss that the fire incident brought, ensures personnel's life safety.

Claims (3)

1. A fire-retardant fire-resistant shielding control cable of low smoke and zero halogen which characterized in that: the cable comprises a conductor, a mica tape wrapping layer is coated on the conductor, a low-smoke halogen-free flame-retardant polyolefin insulating layer is extruded outside the mica tape wrapping layer to form an insulating wire core, a plurality of insulating wire cores are twisted into a cable core, a ceramic composite tape is wrapped outside the cable core, a layer of polyester tape is wound outside the ceramic composite tape, a copper wire shielding layer is woven outside the polyester tape, and a low-smoke halogen-free flame-retardant polyolefin outer sheath is extruded outside the copper wire shielding layer.

2. The low-smoke halogen-free flame-retardant fire-resistant shielding control cable according to claim 1, characterized in that: the conductor is a copper core conductor.

3. The low-smoke halogen-free flame-retardant fire-resistant shielding control cable according to claim 1, characterized in that: the mica tape lapping layer is a double-layer mica tape overlapping lapping layer.

Images