CN220367762U - High-performance fireproof cable - Google Patents

High-performance fireproof cable Download PDF

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Publication number
CN220367762U
CN220367762U CN202321527217.9U CN202321527217U CN220367762U CN 220367762 U CN220367762 U CN 220367762U CN 202321527217 U CN202321527217 U CN 202321527217U CN 220367762 U CN220367762 U CN 220367762U
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layer
periphery
coated
cable
fire
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CN202321527217.9U
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张赫祥
朱传玉
张健
崔航航
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Zhejiang Wanma Co Ltd
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Zhejiang Wanma Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/14Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables

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Abstract

The utility model discloses a high-performance fireproof cable, which comprises: a plurality of cable cores arranged in parallel; the cable core includes: a plurality of conductors; the periphery of the conductor is coated with a fire-resistant layer; the periphery of the fire-resistant layer is coated with an insulating layer; the periphery of the plurality of cable cores is wrapped and filled with mineral filling layers; the periphery of the mineral filling layer is coated with a tape reinforcing layer; the periphery of the bag belt reinforcing layer is coated with an oxygen isolation layer; the periphery of the oxygen isolation layer is coated with a wrapping layer; the periphery of the wrapping layer is also wrapped with a halogen-free outer protective layer; the conductor is formed by combining a plurality of conductive copper cores; the conductive copper core is formed by twisting a plurality of copper wires; the plurality of cable cores are connected in a twisting way. The high-performance fireproof cable has higher impact resistance and extrusion resistance, can prevent fire, corrosion and showering, and avoids generating more harmful gases and smoke, thereby ensuring the power supply performance of the cable while not deteriorating the fire environment so as to supply power to rescue machines in a fire scene and ensure the timeliness of fire rescue.

Description

High-performance fireproof cable
Technical Field
The utility model relates to a high-performance fireproof cable.
Background
The public living is not powered on, the national construction is not powered off, and in the fire accidents of the construction, the electrical reasons are very large. Fire accidents are very easy to occur in places where people gather like shops, hotels, office buildings and the like. However, the mechanical structure performance of the common cable is low, and the power cannot be supplied easily due to the influence of external forces such as fire, impact and extrusion, so that equipment such as lighting and other emergency rescue machines cannot be used normally, thereby influencing rescue of a fire disaster, and toxic gas is generated due to combustion of a coating material adopted by the common cable, thereby deteriorating the fire disaster environment, and seriously influencing the escape and rescue work of personnel.
Disclosure of Invention
The utility model provides a high-performance fireproof cable which solves the technical problems, and specifically adopts the following technical scheme:
a high performance fire-resistant cable comprising: a plurality of cable cores arranged in parallel; the cable core includes: a plurality of conductors for conducting electricity; the periphery of the conductor is coated with a refractory layer for improving the refractory performance; the fire-resistant layer is formed by overlapping and wrapping two layers of synthetic fluorine-gold mica tapes; the periphery of the refractory layer is coated with an insulating layer for insulating and protecting the conductor; the insulating layer is formed by polyethylene through steam crosslinking; the peripheries of the cable cores are wrapped and filled with mineral filling layers for improving flame retardant property; the periphery of the mineral filling layer is coated with a tape reinforcing layer for flame retardation protection; the periphery of the bag belt reinforcing layer is coated with an oxygen isolation layer for oxygen isolation and corrosion prevention; the periphery of the oxygen isolation layer is coated with a wrapping layer for shaping and reinforcing the oxygen isolation layer; the periphery of the wrapping layer is also coated with a halogen-free outer protective layer for further improving the flame retardance; the conductor is formed by combining a plurality of conductive copper cores; the conductive copper core is formed by twisting a plurality of copper wires; the plurality of cable cores are connected in a twisting way.
Further, the thickness value range of the tape reinforcing layer is more than or equal to 5.1mm and less than or equal to 5.3mm; the thickness of the wrapping layer ranges from 0.35mm or more to 0.45mm or less.
Further, the thickness value of the refractory layer ranges from 0.65mm or more to 0.75mm or less; the ratio of the thickness value of the insulating layer to the thickness value of the refractory layer is 2:1.
Further, the ratio of the diameter of the cross section of the conductor to the diameter of the halogen-free outer sheath is 1:5.
Further, the mineral filling layer is made of ceramic silicone rubber materials.
Further, the tape reinforcing layer is made of a ceramic silicon rubber composite tape and an alkali-free glass fiber tape in a superposition mode.
Further, the oxygen barrier layer is made of ceramic polyolefin oxygen barrier material.
Further, the oxygen barrier layer is coated on the periphery of the strap reinforcing layer through hot melting.
Further, the wrapping layer is made of alkali-free glass fiber tapes.
Further, the halogen-free outer protective layer is coated on the periphery of the wrapping layer by adopting polyolefin sheath materials through hot melting.
The high-performance fireproof cable has the advantages that the provided high-performance fireproof cable has strong impact resistance and extrusion resistance, can prevent fire, high temperature, corrosion and showering in a fire scene, thereby avoiding generating more harmful gases and smoke, ensuring the power supply performance of the cable without deteriorating the fire environment, supplying power to rescue machines in the fire scene, ensuring the timeliness of fire rescue and having high use safety.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic cross-sectional view of a high performance fire-resistant cable according to the present application, the individual layer thicknesses shown in the cross-section not representing the actual individual layer thicknesses, nor the layer thickness ratios;
the high-performance fireproof cable 10, a conductor 11, a copper core 111, a fireproof layer 12, an insulating layer 13, a mineral filling layer 14, a tape reinforcing layer 15, an oxygen-insulating layer 16, a wrapping layer 17 and a halogen-free outer protective layer 18.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.
In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
As shown in fig. 1, a high performance fire-resistant cable 10 of the present application comprises: a plurality of cable cores arranged side by side, the cable core comprising: a plurality of conductors 11 for conducting electricity. The periphery of the conductor 11 is coated with a fire-resistant layer 12 for improving fire resistance, and the fire-resistant layer 12 is formed by overlapping and wrapping two layers of synthetic fluorine mica tapes, so that the fire resistance is improved. The insulation layer 13 is coated on the periphery of the fire-resistant layer 12 for insulating and protecting the conductor 11, so that the insulation performance of the cable is ensured, the insulation layer 13 is formed by crosslinking crosslinked polyethylene by steam, and the structure is adopted, firstly, the polyethylene does not contain halogen, secondly, harmful gases and smoke are not released or are less released when the polyethylene burns, the insulation layer also has excellent insulation performance, and the cable has high environmental stress cracking resistance, cold flow resistance and chemical stability, and improves the heat aging resistance and solvent resistance of the cable.
Further, the outer circumference of the plurality of cable cores is wrapped and filled with the mineral filling layer 14 for improving the flame retardant property of the cable, the circumference side of the mineral filling layer 14 is wrapped with the wrapping tape reinforcing layer 15 for flame retardant protection, the outer circumference of the wrapping tape reinforcing layer 15 is wrapped with the oxygen isolation layer 16 for oxygen isolation and corrosion prevention, the outer circumference of the oxygen isolation layer 16 is wrapped with the wrapping layer 17 for shaping and reinforcing the oxygen isolation layer 16, and the outer circumference of the wrapping layer 17 is further wrapped with the halogen-free outer protective layer 18 for further improving the flame retardant property.
In the above-described embodiment, the mineral filling layer 14 is made of a ceramic silicone rubber material. The ceramic silicone rubber does not contain halogen, generates little smoke during combustion, and has flame retardance. In addition, the ceramic shell formed after the ceramic silicon rubber is burnt by flame is excellent in stability, cannot easily fall off and melt, and has certain impact resistance and spray resistance, so that the extrusion resistance of the cable can be improved, and the cable core can be ensured to be powered normally.
As a specific implementation mode, the tape reinforcing layer 15 is made by superposing a ceramic silicon rubber composite tape and an alkali-free glass fiber tape, and the tape reinforcing layer 15 is superposed and wrapped with 2 layers of ceramic silicon rubber composite tapes and 1 layer of alkali-free glass fiber tape, and the covering rates of the tape reinforcing layer 15 are respectively 20% -30% and 12% -15%. The ceramic silicon rubber composite belt and the mineral substance filling layer 14 are the same material, can form a ceramic shell at high temperature, have excellent performance, and can insulate heat, fire, water, impact and spray after ceramic, thereby ensuring normal conduction of the cable and supplying power to rescue machines in fire scene. The alkali-free glass fiber belt has excellent mechanical strength, electrical insulation, chemical stability, acid resistance, heat resistance and the like, and the softening point reaches 850 ℃, so that the extrusion resistance, corrosion resistance and shower resistance of the cable are further improved.
As a specific embodiment, the oxygen barrier layer 16 is made of a ceramic polyolefin oxygen barrier material. Under the condition of flame combustion, the oxygen-insulating material can form a ceramic armor shell mainly containing silicon dioxide, honeycomb-shaped fine holes are formed in the shell, the effects of fire insulation and heat insulation can be achieved, volatilization of combustible gas can be effectively reduced, certain mechanical strength is achieved, mechanical impact can be borne, high temperature resistance, impact resistance and spray resistance of the cable can be improved, and the oxygen-insulating material is environment-friendly, simple in production process and low in cost.
Specifically, the oxygen isolation layer 16 is coated on the periphery of the tape reinforcing layer 15 through hot melting, so that the mechanical viscosity between the oxygen isolation layer 16 and the tape reinforcing layer 15 is improved, the stability of the whole structure of the cable is ensured, and layering is avoided.
As a specific embodiment, the wrap 17 is made of an alkali-free glass fiber tape, by which the molding of the oxygen barrier layer 16 can be reinforced and the scattering after the molding of the oxygen barrier layer 16 can be prevented. Alkali-free fiberglass tapes can also improve fire resistance.
As a specific embodiment, the halogen-free outer sheath 18 is coated on the outer periphery of the wrapping layer 17 by hot melting using a polyolefin sheath material. The polyolefin material has the characteristics of flame retardance, no halogen, low smoke, low toxicity and the like, and also has certain mechanical strength, so that the cable material can better cope with external impact from the outermost layer of the cable.
Further, the conductor 11 is composed of a combination of a plurality of conductive copper cores 111, the conductive copper cores 111 are formed by twisting a plurality of copper wires, and a plurality of cable cores are twisted and connected. In this way, the conductor 11 is a hard pressed stranded copper conductor 11, and the stranded copper conductor 11 has great advantages in high temperature resistance, mechanical strength, production cost and the like, and is extremely suitable for fire-resistant cables. And the excellent performance of the copper conductor 11 is supplemented with the twisting production process, so that the stability of the structure of the copper conductor 11 is obviously improved. In addition, the compressed stranded copper conductor 11 is beneficial to improving the compactness between the conductor 11 and the refractory layer 12, and no gap is reserved, so that the electrical insulation property can be enhanced, the consumption of mica tapes can be saved, and the cost is reduced.
The synthetic fluorophlogopite belt with high temperature resistance is selected as the mica belt, besides the high temperature resistance, the electrical insulation property of the fluorophlogopite belt is very excellent, and compared with natural mica, the volume resistivity of the fluorophlogopite belt is 1000 times of that of the natural mica.
The scheme omits the metal sheath while ensuring the structural strength of the cable, improves the flexibility of the cable and is easy to lay.
As a specific embodiment, the thickness range of the tape reinforcing layer is more than or equal to 5.1mm and less than or equal to 5.3mm, the thickness range of the wrapping layer is more than or equal to 0.35mm and less than or equal to 0.45mm, the thickness range of the fire-resistant layer is more than or equal to 0.65mm and less than or equal to 0.75mm, the thickness ratio of the insulating layer to the fire-resistant layer is 2:1, and the ratio of the diameter of the cross section of the conductor to the diameter of the halogen-free outer protective layer is 1:5. Through such size and proportion setting, can guarantee that the whole diameter of cable is moderate promptly, and the diameter is in moderate installation size promptly, increases the holistic crashworthiness of cable and anti extrusion to at the scene of a fire, this cable can prevent fires, anticorrosion, anti-showering, avoid producing more harmful gas and smog, thereby guarantee self power supply performance when not deteriorating the conflagration environment, in order to supply power for the rescue machine in scene of a fire, guarantee the timeliness of conflagration rescue, the safety in utilization is high.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be appreciated by persons skilled in the art that the above embodiments are not intended to limit the utility model in any way, and that all technical solutions obtained by means of equivalent substitutions or equivalent transformations fall within the scope of the utility model.

Claims (10)

1. A high performance fire-resistant cable comprising: a plurality of cable cores arranged in parallel; the cable core includes: a plurality of conductors for conducting electricity;
the periphery of the conductor is coated with a refractory layer for improving the refractory performance;
the fire-resistant layer is formed by overlapping and wrapping two layers of synthetic fluorine-gold mica tapes;
the periphery of the fireproof layer is coated with an insulating layer for insulating and protecting the conductor;
the insulating layer is formed by polyethylene through steam crosslinking;
the periphery of the plurality of cable cores is wrapped and filled with mineral substance filling layers for improving flame retardant property; the periphery of the mineral filling layer is coated with a tape reinforcing layer for flame retardation protection;
the periphery of the bag belt reinforcing layer is coated with an oxygen isolation layer for oxygen isolation and corrosion prevention;
the periphery of the oxygen isolation layer is coated with a wrapping layer for carrying out plastic reinforcement on the oxygen isolation layer; the periphery of the wrapping layer is also coated with a halogen-free outer protective layer for further improving the flame retardance;
the conductor is formed by combining a plurality of conductive copper cores;
the conductive copper core is formed by twisting a plurality of copper wires;
and a plurality of cable cores are connected in a twisting way.
2. The high performance fire resistant cable according to claim 1, characterized in that,
the thickness value range of the wrapping band reinforcing layer is more than or equal to 5.1mm and less than or equal to 5.3mm; the thickness value of the wrapping layer is in the range of more than or equal to 0.35mm and less than or equal to 0.45mm.
3. The high performance fire resistant cable according to claim 2, characterized in that,
the thickness range of the refractory layer is more than or equal to 0.65mm and less than or equal to 0.75mm;
the ratio of the thickness value of the insulating layer to the thickness value of the refractory layer is 2:1.
4. A high-performance fireproof cable according to claim 3, wherein,
the ratio of the diameter of the cross section of the conductor to the diameter of the halogen-free outer protective layer is 1:5.
5. The high performance fire resistant cable according to claim 1, characterized in that,
the mineral substance filling layer is made of ceramic silicon rubber materials.
6. The high performance fire resistant cable according to claim 1, characterized in that,
the belting reinforcing layer is made by superposing a ceramic silicon rubber composite belt and an alkali-free glass fiber belt.
7. The high performance fire resistant cable according to claim 1, characterized in that,
the oxygen-isolating layer is made of ceramic polyolefin oxygen-isolating material.
8. The high performance fire resistant cable according to claim 7, characterized in that,
the oxygen isolation layer is coated on the periphery of the belting reinforcing layer through hot melting.
9. The high performance fire resistant cable according to claim 1, characterized in that,
the wrapping layer is made of alkali-free glass fiber tapes.
10. The high performance fire resistant cable according to claim 1, characterized in that,
the halogen-free outer protective layer is coated on the periphery of the wrapping layer by adopting polyolefin sheath materials through hot melting.
CN202321527217.9U 2023-06-14 2023-06-14 High-performance fireproof cable Active CN220367762U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202321527217.9U CN220367762U (en) 2023-06-14 2023-06-14 High-performance fireproof cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202321527217.9U CN220367762U (en) 2023-06-14 2023-06-14 High-performance fireproof cable

Publications (1)

Publication Number Publication Date
CN220367762U true CN220367762U (en) 2024-01-19

Family

ID=89520803

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202321527217.9U Active CN220367762U (en) 2023-06-14 2023-06-14 High-performance fireproof cable

Country Status (1)

Country Link
CN (1) CN220367762U (en)

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