CN111128468A - Photoelectric composite cable for 4G/5G small base station and preparation process thereof - Google Patents
Photoelectric composite cable for 4G/5G small base station and preparation process thereof Download PDFInfo
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- CN111128468A CN111128468A CN202010026238.7A CN202010026238A CN111128468A CN 111128468 A CN111128468 A CN 111128468A CN 202010026238 A CN202010026238 A CN 202010026238A CN 111128468 A CN111128468 A CN 111128468A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/22—Cables including at least one electrical conductor together with optical fibres
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/24—Sheathing; Armouring; Screening; Applying other protective layers by extrusion
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/26—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping
- H01B13/2613—Sheathing; Armouring; Screening; Applying other protective layers by winding, braiding or longitudinal lapping by longitudinal lapping
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/08—Flat or ribbon cables
- H01B7/0807—Twin conductor or cable
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
- H01B7/20—Metal tubes, e.g. lead sheaths
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Communication Cables (AREA)
Abstract
The invention discloses a photoelectric composite cable for a 4G/5G small base station and a preparation process thereof, wherein the photoelectric composite cable comprises optical units, electric units and a sheath layer, the two electric units are arranged in parallel side by side, the optical unit is arranged in the middle between the two electric units, and the sheath layer is arranged outside the electric units and the optical units; the optical unit comprises two-core tightly-sleeved optical fiber, aramid yarn and a metal armored hose, the outer portion of the two-core tightly-sleeved optical fiber is protected in a tensile mode through the aramid yarn, the two-core tightly-sleeved optical fiber is armored through the metal armored hose, and a tightly-sleeved layer is arranged on the outer portion of the two-core tightly-sleeved optical fiber. The photoelectric composite cable is suitable for indoor and outdoor wiring, integrates light and electricity and has a photoelectric simultaneous transmission function; the cable has the advantages of low smoke, zero halogen and flame retardant property, excellent rat-proof property, easy stripping, convenient construction, side pressure resistance and good tensile property.
Description
Technical Field
The invention relates to the field of communication, in particular to a photoelectric composite cable for a 4G/5G small base station and a preparation process thereof.
Background
With the continuous expansion of the construction scale of optical fiber networks and the application of 4G and 5G communication technologies, the limitations of the traditional macro station in the aspects of site construction property coordination, the requirement of a matched base station machine room, depth and accurate coverage, capacity expansion and reconstruction and the like are increasingly prominent. The small base station represented by the pico-station adopts low-cost, miniaturized, low-power and low-power-consumption access equipment, and accesses an operator core network through an IP-based wired broadband backhaul link and a small base station gateway, so that the problems can be better solved, and the method becomes a beneficial supplement of the traditional macro-station. Because 4G and future 5G small base stations are inconvenient to be configured with power supplies independently, and a connecting cable needs to transmit optical signals and electric power simultaneously, in order to avoid laying optical cables for optical transmission and electric cables for electric transmission respectively, occupy excessive existing pipeline resources, increase the construction difficulty and cost, a special radio frequency remote optical-electrical composite cable for the small base stations is developed.
Disclosure of Invention
The invention aims to provide a photoelectric composite cable for a 4G/5G small base station and a preparation process thereof, wherein the photoelectric composite cable is suitable for indoor and outdoor wiring, integrates light and electricity and has a photoelectric simultaneous transmission function; the cable has the advantages of low smoke, zero halogen and flame retardant property, excellent rat-proof property, easy stripping, convenient construction, side pressure resistance and good tensile property.
The technical scheme adopted by the invention for solving the technical problems is as follows: A4G/5G small base station photoelectric composite cable and a preparation process thereof comprise optical units, electric units and a sheath layer, wherein the two electric units are arranged in parallel side by side, the optical unit is arranged in the middle between the two electric units, and the sheath layer is arranged outside the electric units and the optical units; the optical unit comprises two-core tightly-sleeved optical fiber, aramid yarn and a metal armored hose, the outer portion of the two-core tightly-sleeved optical fiber is protected in a tensile mode through the aramid yarn, the two-core tightly-sleeved optical fiber is armored through the metal armored hose, and a tightly-sleeved layer is arranged on the outer portion of the two-core tightly-sleeved optical fiber.
Further, the electric unit includes reinforcement, conductor and insulating layer, the outside of reinforcement is equipped with the conductor, the conductor outside is equipped with the insulating layer, and the insulating layer outside is equipped with the restrictive coating.
Furthermore, the outer layer of the reinforcing part is spirally stranded by adopting a copper wire, and after the copper wires are stranded, a polyimide belt is tightly wrapped outside the copper conductors to form an insulating layer.
Furthermore, the upper surface and the lower surface of the sheath layer are respectively provided with an electric unit cable stripping groove and an optical unit cable opening groove, the electric unit cable stripping groove corresponds to the electric unit, and the optical unit cable opening groove corresponds to the optical unit.
Further, the metal armored hose is a spiral pipe.
A preparation process of a photoelectric composite cable for a 4G/5G small base station comprises the following steps:
1) the periphery of the optical fiber adopts an ultraviolet curing acrylic acid double coating, and a layer of tight sleeve material is extruded outside the optical fiber through a plastic extruding machine;
2) the stainless steel wire is pressed into a metal band by a steel wire flatting mill, the metal band is prepared into a spiral metal hose by a long-length automatic pipe making machine, the metal hose is obtained by back-twisting treatment in the pipe forming process, wherein the gap is 0.1-0.5 mm, the outer diameter is phi 0.9-phi 15mm, and the metal armored hose carries out armored protection on the tightly sleeved optical fiber; tightly sleeving the optical fiber and the aramid yarn at the central position of the metal armored hose in the process of manufacturing the pipe to prepare an armored optical unit;
3) adopting a conductor bunching machine, and preparing an electric conductor by spirally twisting copper wires outside a stainless steel wire center reinforcing piece, wherein when the sectional area of the conductor is larger than 1.5mm2, the center reinforcing piece is not needed, and when the sectional area of the conductor is smaller than 1.5mm2, the stainless steel wire is needed to be added as the reinforcing piece to improve the tensile property of the optical cable;
4) after the bare copper conductors are stranded, tightly wrapping a layer of polyimide tape outside the copper conductors, wherein the covering rate of the tape is 5-10%; after the conductor is wrapped, sintering and curing the polyimide belt as an insulating temperature-resistant layer through ceramic infrared sintering equipment with accurate temperature control;
5) according to the structure that two copper conductors are respectively placed on two sides of an armored optical unit, an optical unit and an electric unit respectively penetrate through die holes of parallel structures, a layer of low-smoke halogen-free material is extruded through an extruding machine to serve as an outer protective layer, meanwhile, a regular groove is reserved on the surface of the protective layer through the die, and the groove serves as a cable stripping groove of the electric unit and a cable stripping opening of the optical unit.
Furthermore, the optical fiber adopts a single-mode bending-resistant optical fiber or a multi-mode bending-resistant optical fiber.
Further, the tight sleeve material is nylon material, polyvinyl chloride PVC, thermoplastic polyurethane elastomer TPU or low smoke zero halogen material LSZH.
The invention has the beneficial effects that:
1. the optical cable has good bending performance by adopting the bending-resistant optical fiber, and is very suitable for being laid in a narrow space indoors; the outer layer of the optical unit is armored and protected by a stainless steel metal spiral pipe, so that the optical unit has the advantage of preventing rodents from biting; the optical unit is armored by a metal spiral pipe and reinforced and protected by aramid yarn, and has good lateral pressure resistance and tensile property; the electric unit adopts a stainless steel wire as a central reinforcing piece and an outer layer copper wire as a conductor, so that the conductor has double functions of transmitting current and serving as a reinforcing piece, the cable has a compact structure, and the space is saved; the copper conductors are respectively arranged on two sides of the optical fiber in parallel, so that the optical fiber can be reinforced and protected, and the tensile property of the optical cable is improved.
2. Through set up a plurality of recesses respectively on restrictive coating surface, make things convenient for peeling off of electric unit and optical unit, construction convenience.
3. The light-collecting communication and the power transmission are integrated, so that power supply and digital information transmission can be directly carried out on indoor and outdoor small base stations, and the existing pipeline resources can be saved;
drawings
Fig. 1 is a schematic structural view of the present invention.
In the figure:
1 insulating layer, 2 reinforcers, 3 conductors, 4 tight jacketing layers, 5 two-core tight jacketed optical fibers, 6 aramid yarn, 7 metal armored hoses, 8 sheathing layers, 9 electric unit cable stripping grooves and 10 optical unit cable stripping grooves.
Detailed Description
The invention relates to a 4G/5G small base station photoelectric composite cable and a preparation process thereof, which are described in detail below with reference to the attached drawings in the specification.
As shown in fig. 1, the 4G/5G photoelectric composite cable for the small base station of the present invention includes an optical unit, an electrical unit and a sheath layer, wherein the two electrical units are arranged in parallel side by side, the optical unit is arranged in the middle between the two electrical units, and the sheath layer is arranged outside the electrical unit and the optical unit; the optical unit comprises two-core tightly-sleeved optical fiber 5, aramid yarn 6 and a metal armored hose, the outer part of the two-core tightly-sleeved optical fiber is subjected to tensile protection through the aramid yarn, the two-core tightly-sleeved optical fiber is armored through the metal armored hose, and the metal armored hose 7 is a spiral pipe and has the advantage of preventing rodents from gnawing and biting. The outside of the two-core tight-sleeved optical fiber is provided with a tight-sleeved layer 4.
The electric unit includes reinforcement 2, conductor 3 and insulating layer 1, the outside of reinforcement 2 is equipped with conductor 3, 3 outsides of conductor are equipped with insulating layer 1, and 1 outsides of insulating layer are equipped with restrictive coating 8. The electric unit adopts the stainless steel wire as the central reinforcement, and outer layer copper line is as the conductor, makes the conductor have transmission current and as the difunctional of reinforcement, makes cable compact structure, practices thrift the space.
The outer layer of the reinforcing piece 2 is spirally stranded by adopting a copper wire to prepare a copper conductor 3, and the tensile property of the composite cable is improved by the steel wire reinforcing piece; after the copper conductors are twisted, a polyimide tape is tightly wrapped outside the copper conductors to form an insulating layer 1.
The upper surface and the lower surface of the sheath layer 8 are respectively provided with an electric unit cable stripping groove 9 and an optical unit cable opening groove 10, the electric unit cable stripping groove 9 corresponds to an electric unit, and the optical unit cable opening groove 10 corresponds to an optical unit. The stripping of the electric unit and the optical unit is convenient, and the construction is convenient
A preparation process of a photoelectric composite cable for a 4G/5G small base station comprises the following steps:
1) the periphery of the optical fiber adopts an ultraviolet curing acrylic acid double coating, and a layer of tight sleeve material is extruded outside the optical fiber through a plastic extruding machine; a layer of tight sleeve material is extruded outside the optical fiber through an extruding machine, and the tight sleeve material can be nylon material, polyvinyl chloride (PVC), thermoplastic polyurethane elastomer (TPU) and low-smoke halogen-free material LSZH. The optical fiber adopts a single-mode bending-resistant optical fiber or a multi-mode bending-resistant optical fiber.
2) The stainless steel wire is pressed into a metal band with uniform thickness and width by a steel wire flatting mill, the metal band is prepared into a spiral metal hose by a long-length automatic pipe making machine, and the metal hose with proper outer diameter is obtained by back-twisting treatment in the pipe forming process, wherein the gap is 0.1-0.5 mm, and preferably 0.3 mm. The outer diameter is phi 0.9 mm-phi 15mm, preferably phi 12 mm. The metal armored hose carries out armored protection on the tightly sleeved optical fiber; in the process of pipe making, the tightly sleeved optical fibers and aramid yarns are placed at the center of the metal armored hose to prepare the armored optical unit.
3) Adopting a conductor bunching machine, adopting copper wires to carry out spiral stranding outside a stainless steel wire center reinforcing piece to prepare an electric conductor, wherein the sectional area of the conductor can be selected according to the requirements of customers, and when the sectional area of the conductor is more than 1.5mm2When the cross-sectional area of the conductor is less than 1.5mm, the central reinforcing member is not needed2In time, the stainless steel wire is required to be added as a reinforcing member to improve the tensile property of the optical cable.
4) After the bare copper conductors are stranded, tightly wrapping a layer of polyimide tape outside the copper conductors, wherein the covering rate of the tape is 5-10%, and the preferable ratio is 8%; after the conductor is wrapped, the polyimide belt is sintered and solidified to serve as an insulating temperature-resistant layer through ceramic infrared sintering equipment with accurate temperature control.
5) According to the structure that two copper conductors are respectively placed on two sides of an armored optical unit, an optical unit and an electric unit respectively penetrate through die holes of parallel structures, a layer of low-smoke halogen-free material is extruded through an extruding machine to serve as an outer protective layer, meanwhile, a regular groove is reserved on the surface of the protective layer through the die, and the groove serves as a cable stripping groove of the electric unit and a cable stripping opening of the optical unit.
The photoelectric composite cable optical fiber adopts a two-core optical fiber, and the outer layer of the optical fiber is tightly sleeved by adopting a nylon material to prepare the tightly sleeved optical fiber. Tight sleeve optical fiber carries out the armor through stainless steel hose to through aramid yarn tensile protection, the electric unit center adopts the steel wire as central reinforcement, and the outer copper line that uses carries out the spiral transposition, prepares into the copper conductor. The steel wire reinforcing piece improves the tensile property of the composite cable; after the bare copper conductor is stranded, a polyimide belt is tightly wrapped outside the copper conductor to form an insulating layer; and finally, according to the structure that the two conductors are respectively placed on two sides of the armored optical unit in parallel, LSZH (low smoke halogen free material) is adopted, an outer sheath is extruded by a plastic extruding machine, cable stripping grooves which are regularly distributed are formed in the surface of the outer sheath by using a special die, and the grooves are convenient for cable stripping.
The photoelectric composite cable is suitable for indoor and outdoor wiring, integrates light and electricity and has a photoelectric simultaneous transmission function; the cable has the advantages of low smoke, zero halogen and flame retardant property, excellent rat-proof property, easy stripping, convenient construction, side pressure resistance and good tensile property.
While the foregoing is directed to the principles of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
Other technical features than those described in the specification are known to those skilled in the art.
Claims (8)
1. A4G/5G photoelectric composite cable for a small base station is characterized by comprising optical units, electric units and a sheath layer, wherein the two electric units are arranged in parallel side by side, the optical unit is arranged in the middle between the two electric units, and the sheath layer is arranged outside the electric units and the optical units; the optical unit comprises two-core tightly-sleeved optical fiber, aramid yarn and a metal armored hose, the outer portion of the two-core tightly-sleeved optical fiber is protected in a tensile mode through the aramid yarn, the two-core tightly-sleeved optical fiber is armored through the metal armored hose, and a tightly-sleeved layer is arranged on the outer portion of the two-core tightly-sleeved optical fiber.
2. The optical-electrical composite cable for 4G/5G small base station as claimed in claim 1, wherein the electrical unit comprises a reinforcing member, a conductor and an insulating layer, the conductor is arranged outside the reinforcing member, the insulating layer is arranged outside the conductor, and the sheath layer is arranged outside the insulating layer.
3. The optical-electrical composite cable for 4G/5G small base station as claimed in claim 2, wherein the outer layer of the reinforcement is twisted by copper wires, and after the copper wires are twisted, a polyimide tape is tightly wrapped around the copper conductors to form an insulating layer.
4. The optical-electrical composite cable for 4G/5G small base station as claimed in claim 1, wherein the upper and lower surfaces of the sheath layer are respectively provided with an electrical unit cable stripping groove and an optical unit cable opening groove, the electrical unit cable stripping groove corresponds to the electrical unit, and the optical unit cable opening groove corresponds to the optical unit.
5. The optical-electrical composite cable for 4G/5G small base station as claimed in claim 1, wherein the metal-clad hose is a spiral pipe.
6. The process for preparing the photoelectric composite cable for the 4G/5G small base station according to any one of claims 1 to 5, which comprises the following steps:
1) the periphery of the optical fiber adopts an ultraviolet curing acrylic acid double coating, and a layer of tight sleeve material is extruded outside the optical fiber through a plastic extruding machine;
2) the stainless steel wire is pressed into a metal band by a steel wire flatting mill, the metal band is prepared into a spiral metal hose by a long-length automatic pipe making machine, the metal hose is obtained by back-twisting treatment in the pipe forming process, wherein the gap is 0.1-0.5 mm, the outer diameter is phi 0.9-phi 15mm, and the metal armored hose carries out armored protection on the tightly sleeved optical fiber; tightly sleeving the optical fiber and the aramid yarn at the central position of the metal armored hose in the process of manufacturing the pipe to prepare an armored optical unit;
3) adopting a conductor bunching machine, and preparing an electric conductor by spirally twisting copper wires outside a stainless steel wire center reinforcing piece, wherein when the sectional area of the conductor is larger than 1.5mm2, the center reinforcing piece is not needed, and when the sectional area of the conductor is smaller than 1.5mm2, the stainless steel wire is needed to be added as the reinforcing piece to improve the tensile property of the optical cable;
4) after the bare copper conductors are stranded, tightly wrapping a layer of polyimide tape outside the copper conductors, wherein the covering rate of the tape is 5-10%; after the conductor is wrapped, sintering and curing the polyimide belt as an insulating temperature-resistant layer through ceramic infrared sintering equipment with accurate temperature control;
5) according to the structure that two copper conductors are respectively placed on two sides of an armored optical unit, an optical unit and an electric unit respectively penetrate through die holes of parallel structures, a layer of low-smoke halogen-free material is extruded through an extruding machine to serve as an outer protective layer, meanwhile, a regular groove is reserved on the surface of the protective layer through the die, and the groove serves as a cable stripping groove of the electric unit and a cable stripping opening of the optical unit.
7. The process of claim 6, wherein the optical fiber is a single-mode bend-resistant optical fiber or a multi-mode bend-resistant optical fiber.
8. The preparation process of the photoelectric composite cable for the 4G/5G small base station according to claim 6, wherein the tight sleeve material is nylon material, polyvinyl chloride (PVC), thermoplastic polyurethane elastomer (TPU) or low smoke zero halogen material (LSZH).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010026238.7A CN111128468A (en) | 2020-01-10 | 2020-01-10 | Photoelectric composite cable for 4G/5G small base station and preparation process thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010026238.7A CN111128468A (en) | 2020-01-10 | 2020-01-10 | Photoelectric composite cable for 4G/5G small base station and preparation process thereof |
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| CN111128468A true CN111128468A (en) | 2020-05-08 |
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| CN202010026238.7A Pending CN111128468A (en) | 2020-01-10 | 2020-01-10 | Photoelectric composite cable for 4G/5G small base station and preparation process thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113284665A (en) * | 2021-04-19 | 2021-08-20 | 华为技术有限公司 | Photoelectric composite cable and photoelectric system |
| CN115762896A (en) * | 2022-11-22 | 2023-03-07 | 广东思柏科技股份有限公司 | Indoor photoelectric composite cable for 5G communication and preparation method thereof |
-
2020
- 2020-01-10 CN CN202010026238.7A patent/CN111128468A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113284665A (en) * | 2021-04-19 | 2021-08-20 | 华为技术有限公司 | Photoelectric composite cable and photoelectric system |
| CN115762896A (en) * | 2022-11-22 | 2023-03-07 | 广东思柏科技股份有限公司 | Indoor photoelectric composite cable for 5G communication and preparation method thereof |
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