CN213277493U - Green energy-saving long-life power cable for high-rise building - Google Patents

Abstract

The utility model discloses a green energy-conserving long-life power cable for high-rise building, this cable are copper core transposition conductor, and the fire-resistant mica tape of conductor winding adopts double-deck crowded insulation system altogether again, later radiates the cross-linking, and the sinle silk stranding adopts the closely knit packing of fire-retardant packing rope, winds the high fire-retardant area of package, and the oversheath adopts double-deck crowded structure altogether equally to radiate the cross-linking to the outer sheath. The product has the characteristics of high insulation, no halogen, low smoke, flame retardance, fire resistance, no toxicity, water resistance, long service life, high use temperature, large current-carrying capacity and the like, the service life of the product can reach 70 years, compared with the service life of a common power cable of 20 years, the product can be free of maintenance and replacement, the use cost is reduced, the power supply reliability is improved, and the probability of cable faults and fire disasters is reduced.

Description

Green energy-saving long-life power cable for high-rise building

Technical Field

The utility model relates to the technical field of cables, especially, relate to a long-life power cable is used to green energy-saving high-rise building.

Background

Since the early 90 s of the last century, China has built a large number of commercial houses, the commercial houses have changed the wiring mode of wires and cables from open wires to dark wires, the cables used in a large number of buildings have been aged by insulation and sheaths, and the wires have been "bedridden for life". The actual service life of domestic cables is only about 20 years due to factors such as materials, processes, technologies and the like, the cables with the service life of 20 years are difficult to replace in a building with 70 years, short circuit fire accidents easily occur if the cables are used for exceeding the service life after aging, and according to incomplete statistics, more than 85% of electric fires occurring in all building fields at home and abroad are fires caused by short circuit and fire striking due to aging of wires and cables. The development of the long-life power cable can directly prolong the service life of the cable from 20 years to 70 years, and can realize the same service life as a building.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a green energy-conserving high-rise building is with long-life power cable in order to compensate prior art's defect.

The utility model discloses a realize through following technical scheme:

the utility model provides a green energy-conserving long-life power cable for high-rise building, including the sinle silk, the sinle silk including the copper core conductor, the outside of copper core conductor the cladding has fire-resistant mica tape, irradiation crosslinked polyethylene inner insulating layer and fire-retardant irradiation crosslinked polyolefin outer insulating layer in proper order, the back is restrainted with three sinle silks and zinc-plated steel wire bundle together and twists the cladding in proper order in the outside has high fire-retardant around band, the aramid yarn filling layer that blocks water, kevlar fibre weaving layer, low smoke and zero halogen fire-retardant polyolefin inner sheath and irradiation crosslinked low smoke and zero halogen fire-retardant polyolefin oversheath.

And a mineral dense filling layer is filled on the inner side of the high-flame-retardant wrapping tape.

The galvanized steel wire bundle is positioned in the middle of the three wire cores.

The utility model has the advantages that: the utility model discloses have high insulation, do not have halogen, low cigarette, fire-retardant, fire-resistant, nontoxic, waterproof, long service life, operating temperature are high, the current-carrying capacity characteristics such as big, product life can reach 70 years, compares with ordinary power cable 20 years's life, can realize non-maintaining, exempt from to change, has reduced use cost, has improved the reliability of power supply simultaneously, has reduced the probability that cable fault and conflagration take place.

Drawings

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

Detailed Description

As shown in fig. 1, a long-life power cable is used to green energy-conserving high-rise building, including the sinle silk, the sinle silk including copper core conductor 1, the cladding has fire resistant mica tape 2, irradiation crosslinked polyethylene inner insulating layer 3 and fire-retardant irradiation crosslinked polyolefin outer insulating layer 4 in proper order in the outside of copper core conductor 1, the back is restrainted with three sinle silks and 5 bundles of galvanized steel wire and is stranded together the cladding has high fire-retardant around band 6 in proper order in the outside, aramid yarn filling layer 7 blocks water, kevlar fibre weaving layer 8, low smoke and zero halogen fire-retardant polyolefin inner sheath 9 and irradiation crosslinked low smoke and zero halogen fire-retardant polyolefin oversheath 10.

The inside of high fire-retardant taped 6 fill have the closely knit filling layer of mineral substance 11, make cable structure more mellow and more, and increase flame retardant efficiency.

The galvanized steel wire bundle 5 is positioned among the three wire cores, so that the compression resistance and torsion resistance of the wire cores are improved.

The utility model provides a long-life power cable is used to green energy-conserving high-rise building adopts double-deck crowded insulating double-deck crowded sheath structure and irradiation cross-linking technology altogether, has guaranteed mechanical physical properties, electrical property and the low smoke and zero halogen flame retardant property of cable, uses purpose-made insulation and sheath material, has prolonged the life of cable, can reach more than 70 years. The product can be widely applied to places with dense population, such as residential buildings, hospitals, hotels, office buildings, markets, theaters, stations, airports, subways, office buildings and the like, or occasions with higher requirements on safety and power supply reliability.

The product adopts a stranded copper core conductor 1, and a double-layer fire-resistant mica tape 2 is wound outside the copper core conductor 1 in an overlapping manner, so that the cable is ensured to have good fire resistance. The insulation is designed into a double-layer co-extrusion structure, the inner layer insulation material is irradiation cross-linked polyethylene, the volume resistivity is large, the insulation resistance of the wire with the same sectional area is more than 1000 times larger than that of the traditional polyvinyl chloride insulated wire at the highest working temperature, the insulation resistance is little influenced by external moisture, and the electrical performance is stable; the outer layer insulation is flame-retardant irradiation cross-linked polyolefin, so that the requirement of single non-flame-retardant performance can be met, the inner insulation layer can be effectively protected from being influenced by mechanical external force, and the safety of the wire is improved. The double-layer heterogeneous insulation co-extrusion process ensures gapless bonding of double layers, avoids the influence on product performance caused by doping of impurities such as dust, moisture or gas in the double layers of insulation during production, and ensures that the product has more stable electrical performance and more reliable ageing resistance. In order to realize the long service life of the cable, the high-energy electron beam generated by the high-energy electron accelerator is adopted to irradiate the insulation of the wire, the material after irradiation crosslinking is improved in various performances, the service temperature of the cable is increased, and the service life of the cable is prolonged. The cable is filled and the wrapping layer is made of high-flame-retardant materials, the filling materials have the characteristics of tight filling, oxygen isolation, flame retardance, no moisture absorption and the like, and the service life of the cable can be effectively prolonged. The waterproof aramid yarn filling layer can ensure good waterproof and moistureproof effects; the Kevlar woven fabric layer has: permanent heat and flame resistance, the limiting oxygen index Loi is more than 28; permanent antistatic properties; permanent acid and alkali resistance and organic solvent corrosion; high strength, high wear resistance and high tear resistance; no molten drop is generated when meeting fire, and no toxic gas is generated; when the cloth cover is burnt, the cloth cover is thickened, the sealing performance is enhanced, and the cloth cover is not cracked.

The outer sheath also adopts a double-layer co-extrusion process, the fact that the sheath mainly protects the inner layer of the cable is considered, the thickness of the sheath is larger than that of the insulating layer, if the double-sheath structure adopts an irradiation crosslinking process, the irradiation of the material of the inner layer hardly achieves an ideal effect, so that the material of the inner layer is selected from low-smoke halogen-free flame-retardant polyolefin, the irradiation crosslinking low-smoke halogen-free flame-retardant polyolefin is selected for the outer layer sheath, the mechanical physical property and the low-smoke halogen-free flame-retardant property of the cable are guaranteed by the double-sheath structure, the service life of the cable can reach.

Claims (3)

1. The utility model provides a green energy-conserving long-life power cable for high-rise building which characterized in that: including the sinle silk, the sinle silk including the copper core conductor, the outside of copper core conductor cladding in proper order has fire resistant mica tape, irradiation crosslinked polyethylene inner insulating layer and fire-retardant irradiation crosslinked polyolefin outer insulating layer, the back is restrainted with galvanized steel wire bundle and is twisted together to the three sinle silks the cladding in proper order in the outside has high fire-retardant around band, aramid yarn filling layer blocks water, kevlar fibre weaving layer, low smoke and zero halogen fire-retardant polyolefin inner sheath and irradiation crosslinked low smoke and zero halogen fire-retardant polyolefin oversheath.

2. The power cable with long service life for green energy-saving high-rise buildings as claimed in claim 1, wherein: and a mineral dense filling layer is filled on the inner side of the high-flame-retardant wrapping tape.

3. The power cable with long service life for green energy-saving high-rise buildings as claimed in claim 1, wherein: the galvanized steel wire bundle is positioned in the middle of the three wire cores.

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