CN211427876U - Inorganic insulation composite flexible fireproof cable for intelligent building - Google Patents

Abstract

The utility model discloses an inorganic insulation composite flexible fireproof cable for intelligent buildings, which comprises a cable core, wherein the cable core is formed by stranding a plurality of insulation wire cores and a communication optical cable; after polyurethane sealant is filled in gaps of the cable core, a flexible polyimide film is lapped and wound in an overlapping mode, the thickness is not more than 2mm, and the overlapping rate is not less than 70%; the flexible polyimide film is externally extruded with a polyurethane inner sheath, the polyurethane inner sheath is externally wound with a halogen-free low-smoke high-flame-retardant polyolefin isolation belt, the halogen-free low-smoke high-flame-retardant polyolefin isolation belt is externally woven with a galvanized copper wire woven armor layer, the galvanized copper wire woven armor layer is externally wrapped with a polyester fiber reinforced composite winding flame-retardant belting, and the polyester fiber reinforced composite winding flame-retardant belting is externally extruded with a thermoplastic elastomer outer sheath. The utility model discloses a structure of photoelectricity unification has power transmission, fiber communication transmission, optic fibre on-line monitoring function, really realizes the intelligent control to defeated power transformation electric wire netting equipment, facility state and data transmission.

Description

Inorganic insulation composite flexible fireproof cable for intelligent building

Technical Field

The utility model relates to an electric wire and cable field specifically is a compound flexible fireproof cable of inorganic insulation for intelligent building for being suitable for electric wire netting network intelligent control, ensure power transmission of power transmission and transformation electric wire netting, fiber communication transmission.

Background

With the development and the promotion of smart grid construction, the intelligent construction of smart grids such as automatic control of a power distribution network, remote acquisition of power transmission information, online detection of cable running conditions, bidirectional interaction between the power grid and power consumers and the like requires the development of power information communication in a high-speed, reliable and safe direction. The optical fiber has the function of broadband high-speed communication and strong anti-electromagnetic interference capability, so that the optical fiber cable and the power cable are combined together, the power supply cable and the information communication network cable can be laid synchronously, the synchronous implementation of power supply, communication and online monitoring is realized, and the aim of one cable is multipurpose.

In addition, the power cable is generally used for power transmission of buildings in urban districts, and land resources are relatively scarce and expensive; for power and communication lines, the previous practice was to lay two lines in parallel without interfering with each other: the method comprises the following steps of building an electric power transmission channel, building a communication line channel after cables are laid and installed, and laying and installing optical cables; thus, not only the land resource but also the manpower and material resources are wasted.

The high-rise building has the problems that personnel are dense, the fire fighting difficulty is high, and the existing electric safety equipment only has the function of fire alarm and does not have a fire risk management means, so that the fire fighting and rescue difficulty of the high-rise building is higher due to the fact that the fire alarm cannot be controlled after the fire happens. Therefore, the cable product is required to have "safe and reliable" over-hard performance and quality; the current situation is as follows: some civil cables which are not qualified and manufactured by small factories are poor in quality and cannot reach the safety standard, and have the hidden dangers of damage, electric leakage, high power consumption, heating, fire and the like, thereby bringing serious threats to the safety of lives and properties of people.

The traditional production process is backward, the structural design is unreasonable, and the yield is low; in addition, in recent years, the requirements on high flame retardance and environmental protection of cables are higher and higher, so that a plurality of manufacturers can not design and produce intelligent environment-friendly power cable products meeting the technical requirements due to the prior art; and the production process has the following problems: 1. the processing amount is large, and the production cost is high; 2. the laying and management are not facilitated, and the risk coefficient is large; 3. the finished product is difficult to assemble and has long production period; 4. the structure is unreasonable, and the laying area is large; 5. the homogenization of the electric field is uneven, the shielding effect is poor, the partial discharge phenomenon appears in the cable operation at medium frequency, and the safety and the reliability are low; 6. poor fire resistance, flame retardance and the like.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model aims at overcoming prior art's not enough, provide a compound flexible fireproof cable of inorganic insulation for intelligent building, have good insulating properties, mechanical properties, power transmission, on-line monitoring, communication transmission are stable, still possess high fire-retardant, do not have halogen, low cigarette feature ability.

The technical scheme is as follows: in order to solve the above-mentioned object, the inorganic insulation composite flexible fireproof cable for intelligent buildings of the present invention comprises a cable core, wherein the cable core is formed by twisting a plurality of insulation wire cores and a communication optical cable; after polyurethane sealant is filled in gaps of the cable core, a flexible polyimide film is lapped and wound in an overlapping mode, the thickness is not more than 2mm, and the overlapping rate is not less than 70%; the flexible polyimide film is externally extruded with a polyurethane inner sheath, the polyurethane inner sheath is externally wound with a halogen-free low-smoke high-flame-retardant polyolefin isolation belt, the halogen-free low-smoke high-flame-retardant polyolefin isolation belt is externally woven with a galvanized copper wire woven armor layer, the galvanized copper wire woven armor layer is externally wrapped with a polyester fiber reinforced composite winding flame-retardant belting, and the polyester fiber reinforced composite winding flame-retardant belting is externally extruded with a thermoplastic elastomer outer sheath.

The further improvement is that the insulated wire core is composed of an aluminum alloy conductor, an inorganic insulating layer extruded outside the aluminum alloy conductor and a graphene composite semiconductive shielding layer extruded outside the inorganic insulating layer.

The inorganic insulating layer is made of glass fiber heat-insulating cotton, and has the advantages of good insulating property, strong heat resistance, good corrosion resistance and high mechanical strength.

The communication optical cable is embedded into the insulating wire core to form the high-voltage composite cable with communication and transmission functions, has the functions of power transmission of a power transmission and transformation network, on-line detection of facility states and data communication transmission, and realizes integration control of power, on-line monitoring and communication.

The improved composite winding flame-retardant wrapping tape comprises a polypropylene film base material layer, an adhesive layer and a polyester fiber non-woven fabric, wherein a carbon fiber wire is wrapped in the base material layer, and the polypropylene film base material layer is composited with the polyester fiber non-woven fabric through the adhesive layer.

In a further improvement, the thickness of the acrylic film substrate layer is 20-40 μm.

Further improved, the thickness of the polyester fiber non-woven fabric is 50-60 μm.

Further improved, the adhesive layer is a polyurethane adhesive layer.

Has the advantages that: compared with the prior art, the utility model has the advantages that:

the utility model discloses well communication optical cable and insulating core strand the stranding together, make the cable collect transmission, monitoring, communication in an organic whole, realized only needing once construction, a passageway, once only solve the problem that the cable fuses many nets, can replace in the past electric wire, net twine, telephone line, many times of constructions of many circuits such as wired line sight line, practice thrift cable resource and pipeline resource greatly; the production period of the product is short, the yield is high, and the production cost is low; the falling-behind capacity is eliminated, the conversion of scientific and technological achievements is realized, the structural design is reasonable, the cost performance of the product is greatly improved, the labor is saved by more than 25%, and the purposes of practicability, high efficiency and energy conservation are really achieved.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the polyester fiber reinforced composite winding flame-retardant belting of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1, an inorganic insulation composite flexible fireproof cable for intelligent buildings comprises a cable core, wherein the cable core is formed by stranding a plurality of insulation wire cores and a communication optical cable; the insulating wire core is composed of an aluminum alloy conductor 1, an inorganic insulating layer 2 extruded outside the aluminum alloy conductor and a graphene composite semiconductive shielding layer 3 extruded outside the inorganic insulating layer; the inorganic insulating layer is made of glass fiber heat-insulating cotton, so that the wire core is good in insulating property, strong in heat resistance, good in corrosion resistance, high in mechanical strength, free of combustion, non-combustible, deformation-free and embrittlement-free, and resistant to high temperature up to 700 ℃; the graphene composite type semi-conductive shielding layer greatly reduces the volume resistivity of the inner semi-conductive shielding layer and the outer semi-conductive shielding layer of the cable, improves the thermal stability of the semi-conductive shielding layer, improves the homogenization effect of the shielding layer on an electric field, effectively reduces the partial discharge phenomenon possibly occurring in the operation of the cable, ensures the safety and the reliability of the operation of a power line, and prolongs the service life of the cable; the communication optical cable consists of a multimode optical fiber 4 and an aluminum-polyethylene bonding sheath 5 coated outside the multimode optical fiber, and the sheath can bear stretching, side pressure, impact, torsion, repeated bending and bending actions of certain various mechanical external forces and has excellent mechanical property, environmental resistance and chemical corrosion resistance.

Polyurethane sealant 6 is filled in gaps of the cable core, and the flexible polyimide film 7 is lapped and wound after being cured, the thickness is not more than 2mm, the overlapping rate is not less than 70%, the cable core has good dielectric property, the dielectric constant is 4.0 at 103 Hz, the dielectric loss is only 0.004-0.007, the recovery rate can reach 80% -90%, the cable core has excellent mechanical property and electrical insulation property, and the high temperature resistance can reach more than 400 ℃; the polyurethane inner sheath 8 is extruded outside the flexible polyimide film, so that the flexible polyimide film has excellent shock absorption and buffering performance, good compression load resistance and deformation resilience, and the halogen-free low-smoke high-flame-retardant polyolefin isolation belt 9 is wound outside the polyurethane inner sheath, so that the cable not only has excellent high-flame-retardant characteristic and heat resistance, but also has the halogen-free, low-smoke and environment-friendly performance, and can completely meet the use requirements; the galvanized copper wire braided armor layer 10 is braided outside the halogen-free low-smoke high-flame-retardant polyolefin isolation belt, so that electromagnetic interference of the outside to the cable is resisted, efficient and stable transmission of the temperature measurement optical transmission cable and the communication optical cable is ensured, and distortion is reduced; the polyester fiber reinforced composite winding flame-retardant belting 11 is wrapped outside the galvanized copper wire braided armor layer, and the thermoplastic elastomer outer sheath 12 is extruded outside the polyester fiber reinforced composite winding flame-retardant belting, so that the cable has good impact resistance, fatigue resistance, high tear strength, high friction resistance, low temperature resistance, high temperature resistance and plasticity, and is nontoxic in the processing process and free of toxic odor.

As shown in figure 2, the polyester fiber reinforced composite winding flame-retardant belting 11 comprises a polypropylene film base material layer 111 with the thickness of 20-40 μm, a polyurethane adhesive layer 112 and a polyester fiber non-woven fabric 113 with the thickness of 50-60 μm, wherein the base material layer is wrapped with carbon fiber wires, the polypropylene film base material layer is compounded with the polyester fiber non-woven fabric through the adhesive layer to form a composite flame-retardant belt, a three-layer structure is adopted, the carbon fiber wires are added into the base material layer to improve the tensile strength, the bending strength and the fatigue resistance, the mechanical strength and the air tightness of the polypropylene film are better, the transparency and the glossiness are higher, the polypropylene film is tough and wear-resistant, and the polypropylene film and the polyester fiber non-woven fabric are compounded together through the adhesive layer, so that the belting has the advantages of high strength, good mechanical strength, toughness, wear resistance and good, Good mechanical strength, toughness, wear resistance and good flame retardant property.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications can be made without departing from the principle of the present invention, and these modifications should also be regarded as the protection scope of the present invention.

Claims (8)

1. The utility model provides an inorganic insulation compound flexible fireproof cable for intelligent building which characterized in that: the cable comprises a cable core, wherein the cable core is formed by stranding a plurality of insulating wire cores and a communication optical cable; after polyurethane sealant is filled in gaps of the cable core, a flexible polyimide film is lapped and wound in an overlapping mode, the thickness is not more than 2mm, and the overlapping rate is not less than 70%; the flexible polyimide film is externally extruded with a polyurethane inner sheath, the polyurethane inner sheath is externally wound with a halogen-free low-smoke high-flame-retardant polyolefin isolation belt, the halogen-free low-smoke high-flame-retardant polyolefin isolation belt is externally woven with a galvanized copper wire woven armor layer, the galvanized copper wire woven armor layer is externally wrapped with a polyester fiber reinforced composite winding flame-retardant belting, and the polyester fiber reinforced composite winding flame-retardant belting is externally extruded with a thermoplastic elastomer outer sheath.

2. The inorganic insulation composite flexible fireproof cable for intelligent buildings according to claim 1, wherein: the insulating wire core is composed of an aluminum alloy conductor, an inorganic insulating layer extruded outside the aluminum alloy conductor and a graphene composite type semi-conductive shielding layer extruded outside the inorganic insulating layer.

3. The inorganic insulation composite flexible fireproof cable for intelligent buildings according to claim 2, wherein: the inorganic insulating layer is made of glass fiber heat-insulating cotton.

4. The inorganic insulation composite flexible fireproof cable for intelligent buildings according to claim 1, wherein: the communication optical cable is composed of a multimode optical fiber and an aluminum-polyethylene bonding sheath coated outside the multimode optical fiber.

5. The inorganic insulation composite flexible fireproof cable for intelligent buildings according to claim 1, wherein: the polyester fiber reinforced composite winding flame-retardant belt comprises a polypropylene film base material layer, an adhesive layer and a polyester fiber non-woven fabric, wherein a carbon fiber wire is wrapped in the base material layer, and the polypropylene film base material layer is compounded with the polyester fiber non-woven fabric through the adhesive layer.

6. The inorganic insulation composite flexible fireproof cable for intelligent buildings according to claim 5, wherein: the thickness of the acrylic film base material layer is 20-40 μm.

7. The inorganic insulation composite flexible fireproof cable for intelligent buildings according to claim 5, wherein: the thickness of the polyester fiber non-woven fabric is 50-60 mu m.

8. The inorganic insulation composite flexible fireproof cable for intelligent buildings according to claim 5, wherein: the adhesive layer is a polyurethane adhesive layer.

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