Novel low-carbon environment-friendly flame-retardant cold-resistant power cable

Abstract

The utility model relates to a novel low-carbon environment-friendly flame-retardant cold-resistant power cable. The cable comprises a plurality of insulating wire cores, each insulating wire core comprises a conductor, a fireproof layer and an insulating layer, the fireproof layer is wrapped outside the conductor, the insulating layer is extruded outside the fireproof layer, a flame-retardant belt is wrapped outside the plurality of insulating wire cores to form a cable core, a copper belt shielding layer is wrapped outside the cable core, and the copper belt shielding layer is extruded outside the conductor. An inner sheath is extruded outside the copper strip shielding layer, a steel strip armoring layer is wound outside the inner sheath, and an outer sheath is extruded outside the steel strip armoring layer to form the cable. The low-carbon environment-friendly flexible cable has outstanding low-carbon environment-friendly performance, greatly reduces carbon dioxide emission in the production process, has higher insulativity and heat resistance, larger conveying capacity and longer service life, can still keep good bending performance under the low-temperature condition of minus 50 DEG C, and does not crack even if being bent for multiple times with a very small bending radius.

Description

TECHNICAL FIELD

[0001] The utility model relates to a power cable, especially to a novel low-carbon environmental protection flame-retardant cold-resistant power cable. BACKGROUND

[0002] The insulations of various power cables widely used in the domestic are realized by adopting a large amount of XLPE, PVC, EPR and other carbon-containing organic insulating materials, which consume a large amount of petroleum resources, and release a large amount of carbon dioxide, hydrogen halide and other harmful and toxic substances when burning, affecting the safety of human life and seriously polluting the environment.

[0003] The power cables used in power systems, municipal construction, underground railways, petroleum chemical industry, communication networks, tunnel lighting and the like also need to meet the requirements of water resistance, flame retardation, cold resistance and good bending resistance to meet the development needs of the cables. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a novel low-carbon environmental protection flame-retardant cold-resistant power cable to solve the problems in the prior art.

[0005] The technical scheme of the utility model is as follows: a novel low-carbon environmental protection flame-retardant cold-resistant power cable, which comprises a plurality of insulated cores, the insulated core comprises a conductor, a fire-resistant layer and an insulating layer, the fire-resistant layer is wrapped outside the conductor, the insulating layer is extruded outside the fire-resistant layer, a plurality of insulated cores are wrapped with a flame-retardant tape to form a cable core, the cable core is wrapped with a copper tape shielding layer, the copper tape shielding layer is extruded with an inner sheath, the inner sheath is wrapped with a steel tape armoring layer, and the steel tape armoring layer is extruded with an outer sheath to form a cable.

[0006] Preferably, the fire-resistant layer is a double-layer high-flame-retardant mica tape.

[0007] Preferably, the insulating layer is a modified polypropylene insulating layer.

[0008] Preferably, the inner sheath is a PUR polyurethane inner sheath.

[0009] Preferably, the outer sheath is a PUR polyurethane outer sheath.

[0010] The utility model has the advantages of:

[0011] 1) Environmental protection: no harmful gas emission, recyclable, and 40% reduction of carbon dioxide emission in the whole life cycle;

[0012] 2) Economy: long-term stable operation temperature of the cable is high, and the current-carrying capacity of the cable is increased by about 10% compared with the same specification cross-linked polyethylene cable;

[0013] 3) Reliability: can effectively slow down the hidden danger of insulation strength, safe and reliable electrical performance.

[0014] The utility model is helpful to construct city safe and efficient, green low carbon energy system. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the structure diagram of the utility model.

[0016] In the figure, 1 is a conductor, 2 is a fire-resistant layer, 3 is an insulation layer, 4 is a flame-retardant tape, 5 is a copper tape shielding layer, 6 is an inner sheath, 7 is a steel tape armoring layer, and 8 is an outer sheath. DETAILED DESCRIPTION

[0017] A novel low-carbon environmental protection flame-retardant cold-resistant power cable, the cable comprises a plurality of insulated cores, the insulated core comprises a conductor 1, a fire-resistant layer 2 and an insulation layer 3, the fire-resistant layer 2 is wrapped outside the conductor 1, the insulation layer 3 is extruded and wrapped outside the fire-resistant layer 2, a plurality of insulated cores are wrapped outside the flame-retardant tape 4 to form a cable core, the cable core is wrapped outside the copper tape shielding layer 5, the copper tape shielding layer 5 is extruded and wrapped outside the inner sheath 6, the inner sheath 6 is wrapped outside the steel tape armoring layer 7, and the steel tape armoring layer 7 is extruded and wrapped outside the outer sheath 8 to form a cable.

[0018] The conductor 1 uses the copper conductor of the second type meeting the requirements of GB / T 3956-2008;

[0019] The fire-resistant layer 2 is a double-layer high-flame-retardant mica tape;

[0020] The insulation layer 3 is a modified polypropylene insulation layer;

[0021] The inner sheath 6 is a PUR polyurethane inner sheath;

[0022] The outer sheath 8 is a PUR polyurethane outer sheath.

[0023] The utility model has prominent low-carbon environmental protection performance, and the carbon dioxide emission is greatly reduced in the production process, has higher insulation, heat resistance, larger conveying capacity, longer service life, and still can keep good bending performance under the low temperature condition of minus 50 DEG C, and even if bending for many times with very small bending radius, cracking does not appear.

[0024] Meanwhile, the utility model also has the characteristics of waterproof, antibacterial and flame-retardant, and provides a new choice for the low-carbon environmental protection of the power cable system.

[0025] The utility model is high in environmental protection and flame-retardant cold-resistant requirements, has good flame-retardant and cold-resistant characteristics, so as to avoid that the cable is not easy to be damaged by external force in the construction process under the low temperature environment, and the safety in the use process is enhanced.

[0026] In the description of the utility model, it is understood that the indicated orientation or position relation is based on the orientation or position relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0027] In the utility model, unless explicitly specified and limited, for example, it can be fixedly connected, or can be detachably connected, or be integrated; can be mechanically connected, or be electrically connected; can be directly connected, or be indirectly connected through an intermediate medium, can be the communication or interaction relation of two elements inside, unless explicitly limited, the ordinary skilled in the art can understand the specific meaning of the above-mentioned terms in the utility model according to the specific circumstances.

[0028] The standard parts used in the utility model can be purchased from the market, and the special-shaped parts can be ordered according to the description and the drawings.

[0029] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A novel low carbon eco-friendly flame retardant cold-resistant power cable, characterized in that: The cable comprises a plurality of insulated cores, the insulated core comprises a conductor (1), a fire-resistant layer (2) and an insulation layer (3), the fire-resistant layer (2) is wrapped around the conductor (1), and the insulation layer (3) is extruded on the fire-resistant layer (2), the plurality of insulated cores are wrapped with a flame-retardant tape (4) to form a cable core, the cable core is wrapped with a copper tape shielding layer (5), the copper tape shielding layer (5) is extruded with an inner sheath (6), the inner sheath (6) is wrapped with a steel tape armoring layer (7), and the steel tape armoring layer (7) is extruded with an outer sheath (8) to form a cable. The inner sheath (6) is a PUR polyurethane inner sheath. The outer sheath (8) is a PUR polyurethane outer sheath.

2. A novel low carbon environment-friendly flame-retardant cold-resistant power cable according to claim 1, characterized in that: The fire-resistant layer (2) is a double-layer high-flame-retardant mica tape.

3. A novel low carbon environment-friendly flame-retardant cold-resistant power cable according to claim 1, characterized in that: The insulation layer (3) is a modified polypropylene insulation layer.

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