CN217640706U - Flame-retardant and fire-resistant composite cable for photoelectric digital signal transmission - Google Patents

Abstract

The utility model provides a fire-retardant fire-resistant composite cable is used in transmission of photoelectricity digital signal, including copper conductor, fire-resistant mica tape, the fire-retardant crosslinked polyolefin of steamed low cigarette is insulating, pottery silicon rubber flame retardant coating, the branch shielding of copper plastic tape, tight cover optic fibre, aramid yarn reinforcement member, nonmetal aramid fiber reinforcing plastics pole, fire-resistant mineral filling rope, weave copper wire total shielding layer, fire-retardant band, fire-retardant inner sheath, two steel band armoring, the fire-retardant polyolefin sheath of steamed low cigarette, the outer fire-resistant mica tape that coats of its characterized in that annealing copper conductor. The electric signal transmission control three-twisted basic unit group and the optical signal transmission control basic unit group are respectively coated with ceramic silicon rubber fire-resistant layers. The outer layer of the cable-forming cable core is coated with a ceramic silicon rubber fire-resistant layer and a braided copper wire total shield, and the outermost layer of the cable core is extruded with a halogen-free low-smoke flame-retardant polyolefin sheath.

Description

Flame-retardant and fire-resistant composite cable for photoelectric digital signal transmission

Technical Field

The utility model relates to a compound cable is used in photoelectric signal transmission, more specifically is a fire-retardant fire-resistant compound cable is used in photoelectric digital signal transmission.

Background

At present, with the continuous improvement of the safety, environmental protection and intelligent production of signal transmission control by power generation such as wind energy, photovoltaic and thermoelectric, higher requirements on flame retardance, fire resistance and the like are provided for various optical cables used by the optical cables, particularly, the optical cables used for digital information transmission must ensure the safety, accuracy and high efficiency of data transmission of the optical cables, so as to ensure the high-efficiency operation of automatic digital transmission control in the whole process of power generation such as wind energy, photovoltaic and thermoelectric, and particularly, when a fire disaster occurs, so as to ensure the safe and effective operation of signals of a whole power generation monitoring loop and an automatic control system in a certain time.

Disclosure of Invention

The utility model aims at overcoming the drawback of current signal transmission control signal of telecommunication or the single transmission control of light signal, making it can transmit photoelectric digital signal simultaneously, reaching the requirement that the environmental protection does not have harmful substance release, fire-retardant fire-resistant, tensile resistance to compression, anti-electromagnetic radiation to satisfy the special requirement that multi-scene laid, provide a safe environmental protection, tensile resistance to compression, anti-electromagnetic interference's the integrative fire-retardant fire-resistant composite cable of photoelectricity for digital signal transmission.

The utility model discloses a realize through following mode: the utility model provides a photoelectric digital signal transmission is with fire-retardant fire-resistant composite cable, including the copper conductor, fire-resistant mica tape, it is insulating to have the fire-retardant crosslinked polyolefin of steamed low cigarette, pottery silicon rubber flame retardant coating, the shielding is divided in the copper plastic tape, tight cover optic fibre, aramid yarn reinforcement member, non-metallic aramid fiber reinforcing plastic pole, fire-resistant mineral filling rope, weave the total shielding layer of copper wire, fire-retardant band, fire-retardant inner sheath, two steel band armoring, the fire-retardant polyolefin sheath of steamed low cigarette, its characterized in that: a fire-resistant mica tape is coated outside one annealed copper conductor, the fire-resistant mica tape is extruded outside the fire-resistant mica tape to form an insulating wire core in a halogen-free low-smoke flame-retardant cross-linked polyolefin insulation mode, the three insulating wire cores are twisted into a group, and then a ceramic silicon rubber fire-resistant layer and a copper-plastic tape sub-shielding layer are respectively coated on the insulating wire core, so that a three-twisting basic unit group for electric signal transmission control is formed; the method comprises the following steps that an aramid yarn reinforcing member is coated outside a tight-buffered optical fiber, a halogen-free low-smoke flame-retardant polyolefin sheath is extruded outside the aramid yarn reinforcing member to form a single optical fiber unit, two optical fiber units and two nonmetal aramid fiber reinforced plastic rods are twisted together, and then a ceramic silicon rubber fire-resistant layer and the halogen-free low-smoke flame-retardant polyolefin sheath are respectively coated, so that a basic unit group for optical signal transmission control is formed; the plurality of electric signal transmission control three-twisting basic unit groups, the plurality of optical signal transmission control basic unit groups and the plurality of refractory mineral filling ropes are twisted together to form a cable core; the cable core is coated with a ceramic silicon rubber flame-retardant layer and a braided copper wire total shield, the braided copper wire total shield is wrapped with a flame-retardant wrapping tape and an extruded flame-retardant inner sheath, the flame-retardant inner sheath is wrapped with double steel tape armoring, and the outermost layer is extruded with a halogen-free low-smoke flame-retardant polyolefin sheath.

The utility model has the advantages that: the utility model provides a fire-retardant fire-resistant composite cable is used in transmission of photoelectricity digital signal, has adopted signal of telecommunication and optical signal transmission control in an organic whole, avoids secondary wiring, can effectively practice thrift expenses such as construction, network construction. Due to the adoption of the double-shielding structure, the requirement of electromagnetic radiation interference resistance among various cables is supported, so that the cable can be laid with various high-voltage and low-voltage cables on the same line, the line space can be saved, and the special requirement of multi-scene laying can be met. The fire-resistant mica tape and the ceramic silicon rubber fire-resistant layer provide fire resistance, and the double-steel-tape armor provides tensile and lateral pressure resistance of the cable. The halogen-free low-smoke flame-retardant cross-linked polyolefin insulation and the halogen-free low-smoke flame-retardant polyolefin sheath provide non-toxic, pollution-free, safe and environment-friendly flame retardant performance.

Drawings

The present invention will be further explained with reference to the accompanying drawings.

Fig. 1 is a schematic cross-sectional view of the present invention.

In the figure, 1, a copper conductor, 2, a fire resistant mica tape, 3, a halogen-free low-smoke flame-retardant cross-linked polyolefin insulation, 4, an electric signal transmission control three-twisted basic unit group, 5, a ceramic silicon rubber flame-retardant layer, 6, a copper-plastic tape sub-shielding layer, 7, a ceramic silicon rubber flame-retardant layer, 8, a braided copper wire total shielding, 9, a flame-retardant wrapping tape, 10, a flame-retardant inner protective layer, 11, a double-steel-tape armor, 12, a halogen-free low-smoke flame-retardant polyolefin sheath, 13, an optical signal transmission control basic unit group, 14, a tightly-sleeved optical fiber, 15, an aramid yarn reinforcing member, 16, a halogen-free low-smoke flame-retardant polyolefin sheath, 17, a ceramic silicon rubber flame-retardant layer, 18, a halogen-free low-smoke flame-retardant polyolefin sheath, 19, a nonmetal aramid fiber reinforced plastic rod and 20, a fire-resistant mineral filling rope.

Detailed Description

As shown in fig. 1, the structure of the product is schematically illustrated, and the product includes a copper conductor 1, a fire-resistant mica tape 2, a halogen-free low-smoke flame-retardant cross-linked polyolefin insulation 3, an electric signal transmission control three-twisted basic unit group 4, ceramic silicon rubber flame- retardant layers 5, 7 and 17, a copper-plastic tape sub-shielding layer 6, a braided copper wire total shielding 8, a flame-retardant wrapping tape 9, a flame-retardant inner protection layer 10, a double-steel-tape armor 11, halogen-free low-smoke flame- retardant polyolefin sheaths 12, 16 and 18, an optical signal transmission control basic unit group 13, a tightly-sleeved optical fiber 14, an aramid yarn reinforcing member 15, a non-metal aramid fiber reinforced plastic rod 19, and a fire-resistant mineral filling rope 20.

During manufacturing, the copper rod is drawn into a qualified annealed copper conductor 1 through a wire drawing machine for multiple times, a fire-resistant mica tape 2 is coated on the copper conductor, and a halogen-free low-smoke flame-retardant cross-linked polyolefin insulation 3 is extruded outside the fire-resistant mica tape, so that an insulation wire core is manufactured; three insulated wire cores are stranded to form a three-stranded wire group, and the three-stranded wire group is respectively coated with a ceramic silicon rubber fire-resistant layer 5 and a copper-plastic belt sub-shielding layer 6, so that a complete three-stranded basic unit group 4 controlled by electric signal transmission is manufactured; the tightly sleeved optical fiber 14 is coated with an aramid yarn reinforcing member 15, the aramid yarn reinforcing member is extruded with a halogen-free low-smoke flame-retardant polyolefin sheath 16, so that an optical fiber unit is manufactured, the two optical fiber units are twisted with two nonmetal aramid fiber reinforced plastic rods 19, and then respectively coated with a ceramic silicon rubber flame-retardant layer 17 and an extruded halogen-free low-smoke flame-retardant polyolefin sheath 18, so that a complete optical signal transmission control basic unit group 13 is manufactured. According to the requirements, a plurality of electric signal transmission control three-twisting basic unit groups 4, a plurality of optical signal transmission control basic unit groups 13 and a plurality of fireproof mineral filling ropes 20 are cabled and twisted into a cable core, a ceramic silicon rubber fire-resistant layer 7 and a braided copper wire total shielding 8 are coated outside the cable core, the braided copper wire total shielding is wrapped with a flame-retardant wrapping tape 9 and an extruded flame-retardant inner sheath 10, a double-steel-tape armor 11 is coated outside the flame-retardant inner sheath, the double-steel-tape armor is wrapped with a halogen-free low-smoke flame-retardant polyolefin sheath 12 in an extruded mode, identification marks are printed on the surface of the sheath in a spraying mode, and cable manufacturing is completed.

Claims (2)

1. A flame-retardant fire-resistant composite cable for photoelectric digital signal transmission comprises a copper conductor, a fire-resistant mica tape, a halogen-free low-smoke flame-retardant cross-linked polyolefin insulation, a ceramic silicon rubber flame-resistant layer, a copper-plastic tape sub-shield, a tightly-sleeved optical fiber, an aramid yarn reinforcing member, a non-metal aramid fiber reinforced plastic rod, a fire-resistant mineral filling rope, a braided copper wire total shield layer, a flame-retardant wrapping tape, a flame-retardant inner protection layer, a double-steel-tape armor and a halogen-free low-smoke flame-retardant polyolefin sheath, and is characterized in that one annealed copper conductor is externally coated with the fire-resistant mica tape, the fire-resistant mica tape is externally extruded with the halogen-free low-smoke flame-retardant cross-linked polyolefin insulation to form an insulating wire core, the three insulating wire cores are twisted into a group, and then the ceramic silicon rubber flame-resistant layer and the copper-plastic tape sub-shield layer are respectively coated, so that an electric signal transmission control three-twisted basic unit group is formed; the method comprises the following steps that an aramid yarn reinforcing member is coated outside a tight-buffered optical fiber, a halogen-free low-smoke flame-retardant polyolefin sheath is extruded outside the aramid yarn reinforcing member to form a single optical fiber unit, two optical fiber units and two nonmetal aramid fiber reinforced plastic rods are twisted together, and then a ceramic silicon rubber fire-resistant layer and the halogen-free low-smoke flame-retardant polyolefin sheath are respectively coated, so that a basic unit group for optical signal transmission control is formed; the plurality of electric signal transmission control three-twisting basic unit groups, the plurality of optical signal transmission control basic unit groups and the plurality of refractory mineral filling ropes are twisted together to form a cable core; the cable core is coated with a ceramic silicon rubber flame-retardant layer and a braided copper wire total shield, the braided copper wire total shield is wrapped with a flame-retardant wrapping tape and an extruded flame-retardant inner sheath, the flame-retardant inner sheath is wrapped with double steel tape armoring, and the outermost layer is extruded with a halogen-free low-smoke flame-retardant polyolefin sheath.

2. The flame-retardant fire-resistant composite cable for photoelectric digital signal transmission according to claim 1, wherein a plurality of electric signal transmission control three-twisted basic unit groups, a plurality of optical signal transmission control basic unit groups and a plurality of fire-resistant mineral filler ropes are twisted together to form a cable core.

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