CN106653173A - Novel middle-voltage optical fiber composite cable laid behind optical unit - Google Patents

Novel middle-voltage optical fiber composite cable laid behind optical unit Download PDF

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Publication number
CN106653173A
CN106653173A CN201710056122.6A CN201710056122A CN106653173A CN 106653173 A CN106653173 A CN 106653173A CN 201710056122 A CN201710056122 A CN 201710056122A CN 106653173 A CN106653173 A CN 106653173A
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China
Prior art keywords
optical fiber
layer
light unit
fiber composite
cable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201710056122.6A
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Chinese (zh)
Inventor
张涛
张朝龙
刘君
刘冠男
黄伟
虞踏峰
管新元
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
State Grid Liaoning Electric Power Co Ltd
Jiangsu Hengtong Power Cable Co Ltd
Original Assignee
State Grid Corp of China SGCC
State Grid Liaoning Electric Power Co Ltd
Jiangsu Hengtong Power Cable Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by State Grid Corp of China SGCC, State Grid Liaoning Electric Power Co Ltd, Jiangsu Hengtong Power Cable Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201710056122.6A priority Critical patent/CN106653173A/en
Publication of CN106653173A publication Critical patent/CN106653173A/en
Withdrawn legal-status Critical Current

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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
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/08—Copolymers of ethene
    • C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
    • C08L23/0853—Vinylacetate
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401—Optical cables
    • G02B6/4429—Means specially adapted for strengthening or protecting the cables
    • G02B6/443—Protective covering
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401—Optical cables
    • G02B6/4429—Means specially adapted for strengthening or protecting the cables
    • G02B6/4436—Heat resistant
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401—Optical cables
    • G02B6/4429—Means specially adapted for strengthening or protecting the cables
    • G02B6/44384—Means specially adapted for strengthening or protecting the cables the means comprising water blocking or hydrophobic materials
    • 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
    • H01B7/02—Disposition of insulation
    • H01B7/0208—Cables with several layers of insulating material
    • H01B7/0225—Three or more layers
    • 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
    • H01B7/02—Disposition of insulation
    • H01B7/0275—Disposition of insulation comprising one or more extruded layers of insulation
    • H01B7/0283—Disposition of insulation comprising one or more extruded layers of insulation comprising in addition one or more other layers of non-extruded insulation
    • 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
    • H01B7/02—Disposition of insulation
    • H01B7/0291—Disposition of insulation comprising two or more layers of insulation having different electrical properties
    • 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
    • H01B7/1875—Multi-layer sheaths
    • 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
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
    • H01B7/2825—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable using a water impermeable sheath
    • 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
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • H01B7/292—Protection against damage caused by extremes of temperature or by flame using material resistant to heat
    • 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
    • H01B7/29—Protection against damage caused by extremes of temperature or by flame
    • H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/005—Power cables including optical transmission elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
    • H01B9/022—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients composed of longitudinal lapped tape-conductors
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/20—Applications use in electrical or conductive gadgets
    • C08L2203/202—Applications use in electrical or conductive gadgets use in electrical wires or wirecoating
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Insulated Conductors (AREA)

Abstract

The invention relates to a novel middle-voltage optical fiber composite cable laid behind an optical unit. The cable comprises three conductors and the optical unit. A co-extrusion insulating layer, a copper strip shielding layer and an aluminum-plastic composite strip longitudinal packaging layer are successively arranged outside each conductor from inside to outside. The optical unit is composed of an optical fiber bundle, a hollow microtube, a low-smoke halogen-free inner sheath, a first fireproof mineral insulating layer, a glass fiber strip packaging layer and a low-smoke halogen-free outer sheath, wherein the optical fiber bundle, the hollow microtube, the low-smoke halogen-free inner sheath, the first fireproof mineral insulating layer, the glass fiber strip packaging layer and the low-smoke halogen-free outer sheath are successively arranged from inside to outside. The optical fiber bundle is laid in an air blowing manner after laying of the cable. A low-smoke halogen-free oxygen-insulating layer, a second fireproof mineral insulating layer, a high-flame-retardance wrapping belt layer and a low-smoke halogen-free outer sheath are successively arranged outside the three conductors and the optical unit form inside to outside. The gap between the three conductors and the optical unit in the low-smoke halogen-free oxygen-insulating layer is filled by a glass fiber filling rope. According to the novel middle-voltage optical fiber composite cable, the composite material and the structure of the cable are optimized so that fire resistance, vibration resistance, water resistance and heat insulating performance of the middle-voltage optical fiber composite cable are greatly improved, thereby ensuring high safety of a photoelectric transmission line.

Description

Middle pressure optical fiber composite cable is laid after a kind of new light unit
Technical field
The present invention relates to press optical fiber composite cable in one kind, more particularly to middle press polish fibre is laid after a kind of new light unit again Close cable.
Background technology
Medium-pressure power cable is the important carrier of power transmission, in being widely used in electrical power trans mission/distribution system, for transmission ＆ distribution electric energy it With.As the continuous development intelligent construction of society becomes trend, the use of middle pressure optical fiber composite cable is also progressively popularized how The fire resisting for solving the problems, such as pressure optical fiber composite cable in blow arc-extinguishing mode is the key of line security.
Conventional middle pressure optical fiber composite cable typically adopts in the outer wrapped fire-resistant wrapping tape of cable core and extrudes the side of flame-retardant sheath Formula, this structure possesses certain fire resistance, but at present in pressure optical fiber composite cable cannot adopt fire proofing wood because of its insulating barrier Material, also cannot carry out Mica tape outside conductor, and its waterproof construction is typically only capable to using sheath waterproof construction, i.e., using poly- second The insulating barrier of alkene material plays waterproof action as sheath；And cross-linking polyethylene materials non-refractory and easily burn, it is high when meeting Sheath easily melts or burns when warm, therefore cannot play the protective effect of fire-proof and water-proof.
The content of the invention
The invention provides middle pressure optical fiber composite cable is laid after a kind of new light unit, it is multiple with reference to air-blown installation, optical fiber Conjunction technology, and the composite and structure to cable be optimized, make the fire prevention of middle pressure optical fiber composite cable, antidetonation, water proof, every Hot property is greatly improved, so as to ensure that the security of photoelectricity transmission circuit.
In order to achieve the above object, the present invention employs the following technical solutions realization：
Middle pressure optical fiber composite cable, including 3 conductors and light unit are laid after a kind of new light unit；Every conductor outside Three-layer co-extruded insulating barrier, copper strip shielding layer and aluminum plastic composite belt longitudinal covering are sequentially provided with from inside to outside；Light unit is by from inside to outside Fibre bundle, hollow micro-pipe, low smoke and zero halogen sheath, the first refractory mineral separation layer, glass tape covering, the low cigarette for setting gradually Halogen outer jacket is constituted, and wherein fibre bundle adopts air-blown installation after cable laying；The outside of 3 conductors and light unit is by introversion Outward low smoke and zero halogen oxygen barrier layer, the second refractory mineral separation layer, high fire-retardance belting layer and low smoke and zero halogen oversheath are set successively；Low cigarette without Filled by glass fibre gasket for packing 3 gaps between conductor and light unit in halogen oxygen barrier layer.
The first refractory mineral separation layer and the second refractory mineral separation layer are made up of following component ratio by weight：
The hollow micro-pipe is PE micro-pipes, and hollow microtubule diameter is fibre bundle+4～6mm of external diameter.
The conductor adopts stranded conductor of Equations of The Second Kind annealed copper strand wire, and its lay ratio is 12～14, and stranded conductor is tight Pressure circular configuration, presses coefficient >=0.92.
The three-layer co-extruded insulating barrier be conductor shield+XLPE insulating barriers+insulation screen, core shift rate ＜ 8%.
Copper strips of the copper strip shielding layer by nominal thickness for 0.12mm overlaps wrapped, Duplication 17%～22%, copper strips Lapping direction is left-hand.
Overlap overlap length >=the 6mm of the aluminum plastic composite belt longitudinal covering, lap-joint adopts adhesive bonding.
Compared with prior art, the invention has the beneficial effects as follows：
1) refractory mineral insulating materials newly developed as fibre bundle and cable insulating barrier (the first refractory mineral separation layer and Second refractory mineral separation layer), the first or second refractory mineral separation layer generates the inorganic housing of ceramic-like, energy under flame ablation Enough isolate flame, so as to play heat-insulated, fire prevention and insulating effect, substantially increase fire protecting performance；
2) in copper strip shielding layer peripheral hardware aluminum plastic composite belt longitudinal covering, it is the alloy water blocking layer with water-proof function, in electricity Waterproof effect can be played during Water spray after cable thermometric early warning, its overlap can ensure that using adhesive bonding and block water Performance；And can meet cable impact, concussion in the case of water resistance；
3) low smoke and zero halogen oxygen barrier layer is set on the outside of 3 conductors and fibre bundle, hydrolysis occurs when cable heat is burnt, Cooling effect can be played to core, it is ensured that the integrality of crosslinking core；
4) in the outer of the first refractory mineral separation layer, glass fiber belting layer is set, in the outside of the second refractory mineral separation layer It is intact when enabling refractory mineral separation layer chance fire to crust, it is to avoid tortoise occur if high fire-retardance belting layer, plays and tighten protective effect Split, phenomenon of scattering, affect isolation effect；
5) present invention is optimized by the composite and structure to cable, and security performance is greatly improved, Jing tests, into Product cable can bear 1050 DEG C of flame temperature, and fire duration passed through the burning that GB and Britain's BS standards specify more than 6 hours Experimental condition requirement, fully meets the requirement of fireproof cable code of building design.
Description of the drawings
Fig. 1 is the structural representation that middle pressure optical fiber composite cable is laid after a kind of new light unit of the present invention.
Fig. 2 is the partial enlarged drawing of Fig. 1.(light unit and its external protection structure)
Fig. 3 is that middle pressure optical fiber composite cable combination process flow chart is laid after a kind of new light unit of the present invention.
In figure：1. glass fibers of 4. aluminum plastic composite belt longitudinal covering of the three-layer co-extruded 3. copper strip shielding layer of insulating barrier of conductor 2. 5. The glass fiber of 8. 9. first refractory mineral separation layer of low smoke and zero halogen sheath of dimension 6. 7. hollow micro-pipe of fibre bundle of gasket for packing 10. The high fire-retardance bag of 12. 13. second refractory mineral separation layer of low smoke and zero halogen oxygen barrier layer of band 11. low smoke and zero halogen outer jacket of covering 14. The low smoke and zero halogen oversheath of belt 15.
Specific embodiment
The specific embodiment of the present invention is described further below in conjunction with the accompanying drawings：
As shown in Figure 1 and Figure 2, middle pressure optical fiber composite cable, including 3 are laid after a kind of new light unit of the present invention Conductor 1 and light unit；The every outside of conductor 1 is sequentially provided with from inside to outside three-layer co-extruded insulating barrier 2, copper strip shielding layer 3 and plastic-aluminum Composite belt longitudinal covering 4；Light unit by the fibre bundle 6, hollow micro-pipe 7, low smoke and zero halogen sheath 8 for setting gradually from inside to outside, One refractory mineral separation layer 9, glass tape covering 10, low smoke and zero halogen outer jacket 11 are constituted, and wherein fibre bundle 6 is after cable laying Using air-blown installation；The outside of 3 conductors 1 and light unit sets successively from inside to outside low smoke and zero halogen oxygen barrier layer 12, the second fire resisting ore deposit Thing separation layer 13, high fire-retardance belting layer 14 and low smoke and zero halogen oversheath 15；3 conductors 1 and light in low smoke and zero halogen oxygen barrier layer 12 Filled by glass fibre gasket for packing 5 gap between unit.
The first refractory mineral separation layer 9 and the second refractory mineral separation layer 13 are by following component ratio group by weight Into：
The hollow micro-pipe 7 is PE micro-pipes, and the internal diameter of hollow micro-pipe 7 is+4～6mm of external diameter of fibre bundle 6.
The conductor 1 adopts stranded conductor of Equations of The Second Kind annealed copper strand wire, and its lay ratio is 12～14, and stranded conductor is tight Pressure circular configuration, presses coefficient >=0.92.
The three-layer co-extruded insulating barrier 2 be conductor shield+XLPE insulating barriers+insulation screen, core shift rate ＜ 8%.
Copper strips of the copper strip shielding layer 3 by nominal thickness for 0.12mm overlaps wrapped, Duplication 17%～22%, copper strips Lapping direction is left-hand.
Overlap overlap length >=the 6mm of the aluminum plastic composite belt longitudinal covering 4, lap-joint adopts adhesive bonding.
Following examples are implemented under premised on technical solution of the present invention, give detailed embodiment and tool The operating process of body, but protection scope of the present invention is not limited to following embodiments.Method therefor is such as without spy in following embodiments Do not mentionlet alone and bright be conventional method.
【Embodiment】
In the present embodiment, the first refractory mineral separation layer 9 and the second refractory mineral separation layer 13 are pressed by following component Weight ratio is constituted：
The low smoke and zero halogen oxygen barrier layer 12 is made up of following components ratio by weight：
As shown in figure 3, laying the combination process stream of middle pressure optical fiber composite cable after a kind of new light unit of the present invention Journey is as follows：
The manufacturing process of conductor 1 and its external protection：Conductor material Jing wire drawings, twisted wire are closed makes stranded conductor, is guarantee The flatness of interfacial dielectric layer, using having the stranded conductor of circular configuration is pressed, and presses coefficient more than 0.92, it is ensured that led Compactness between the surface quality and monofilament of body 1；Three-layer co-extruded insulating barrier 2 is extruded outside stranded conductor, is produced using NOKIA crosslinkings The supporting Xi Kela derivometers of line, it is ensured that three-decker size Control precision and core shift degree, it is ensured that core shift rate ＜ 8%；At three layers altogether The peripheral hardware copper strip shielding layer 3 of crowded insulating barrier 2, wrapped, control Duplication 17%～22% is overlapped using 0.12mm nominal thickness copper strips, Copper strips lapping direction is left-hand, and emphasis considers the tension force and wrapping angle of Concentric lapping head during shielding.Consider electricity Cable to be met and trigger early warning system after fire burning, may be put out a fire using Water spray, therefore in outer one layer of the longitudinal direction cladding of copper strip shielding layer 3 Aluminum plastic composite belt longitudinal covering 4, its longitudinal overlapping portions carry out adhesion with adhesive, it is ensured that block-water performance, the overlapping portion of lap-joint Divide and be not less than 6mm.
The external protection manufacturing process of fibre bundle 6 in light unit：Extrude low smoke and zero halogen sheath 8 outside hollow micro-pipe 7, low cigarette without Absciss layer 9 in the first refractory mineral is extruded outside halogen sheath 8, then wrapped glass tape covering 10 on the outside of it, finally extrudes low Cigarette Halogen outer jacket 11.Wherein low smoke and zero halogen sheath 8 and low smoke and zero halogen outer jacket 11 are using conventional low smoke and zero halogen sheath material Material makes.In the outer wrapped glass tape covering 10 of the first refractory mineral separation layer 9, can play and tighten protective effect, make first Refractory mineral separation layer 9 can be with intact crust, it is to avoid cracking, phenomenon of scattering occur.
Special active pay-off equipment is adopted during light unit stranding, power wire core avris position is placed in, it is common with power wire core It is combined, equipment tension force and laying up pitch control are CCPs.
By make 3 conductors 1 with external protection and fibre bundle external protection (not containing fibre bundle 6), side by side bunchy sets Put, wrapped low smoke and zero halogen oxygen barrier layer 12 on the outside of it extrudes the second refractory mineral separation layer 13 outside low smoke and zero halogen oxygen barrier layer 12, Further around bag high fire-retardance belting layer 14, outermost extrudes low smoke and zero halogen oversheath 15 and carries out Global Macros；Then low smoke and zero halogen every Filled using glass fibre gasket for packing 5 gap between 3 conductors 1 and light unit in oxygen layer 12.Low smoke and zero halogen oxygen barrier layer 12 are located at outer layer of cable core, and when cable occurs fire, heat is to the inside of cable after the isolation flame of the second refractory mineral separation layer 13 Extend, the heat of low smoke and zero halogen oxygen barrier layer 12 plays fire-retardant, hydrolysis cooling effect, its component prescription takes into account fire resistance and water simultaneously Solution adequacy, it is ensured that fire resisting combination property.
Fibre bundle 6 advances fibre bundle 6 in the hollow micro-pipe 7 of row using system of laying after air-sweeping type using mechanically-propelled device, Powerful air-flow is set to be sent into pipeline by the gas-tight silo of air-blowing machine using air compressor simultaneously, swiftly flowing air-flow makes optical fiber Beam 6 is pulled in suspended state and in vain in place in hollow micro-pipe 7.When laying, the end of fibre bundle 6 does not stress, after the completion of laying Fibre bundle 6 is loosely rested in hollow micro-pipe 7, and the tension for contributing to the service life of prolongation cable and increasing fibre bundle 6 is strong Degree, is safest cabling mode so far.
Jing is tested, and finished cable can bear 1050 DEG C of flame temperature, and fire duration was more than 6 hours.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto, Any those familiar with the art the invention discloses technical scope in, technology according to the present invention scheme and its Inventive concept equivalent or change in addition, all should be included within the scope of the present invention.

Claims (7)

1. middle pressure optical fiber composite cable is laid after a kind of new light unit, it is characterised in that including 3 conductors and light unit；Often Root conductor outside is sequentially provided with from inside to outside three-layer co-extruded insulating barrier, copper strip shielding layer and aluminum plastic composite belt longitudinal covering；Light unit By the fibre bundle for setting gradually from inside to outside, hollow micro-pipe, low smoke and zero halogen sheath, the first refractory mineral separation layer, glass fiber Band covering, low smoke and zero halogen outer jacket are constituted, and wherein fibre bundle adopts air-blown installation after cable laying；3 conductors and light unit Outside set low smoke and zero halogen oxygen barrier layer, the second refractory mineral separation layer, high fire-retardance belting layer and low smoke and zero halogen successively from inside to outside Oversheath；Filled by glass fibre gasket for packing 3 gaps between conductor and light unit in low smoke and zero halogen oxygen barrier layer.
2. middle pressure optical fiber composite cable is laid after a kind of new light unit according to claim 1, it is characterised in that described First refractory mineral separation layer and the second refractory mineral separation layer are made up of following component ratio by weight：
3. middle pressure optical fiber composite cable is laid after a kind of new light unit according to claim 1, it is characterised in that described Hollow micro-pipe is PE micro-pipes, and hollow microtubule diameter is fibre bundle+4～6mm of external diameter.
4. middle pressure optical fiber composite cable is laid after a kind of new light unit according to claim 1, it is characterised in that described Conductor adopts stranded conductor of Equations of The Second Kind annealed copper strand wire, and its lay ratio is 12～14, and stranded conductor is to press circular configuration, tightly Pressure coefficient >=0.92.
5. middle pressure optical fiber composite cable is laid after a kind of new light unit according to claim 1, it is characterised in that described Three-layer co-extruded insulating barrier be conductor shield+XLPE insulating barriers+insulation screen, core shift rate ＜ 8%.
6. middle pressure optical fiber composite cable is laid after a kind of new light unit according to claim 1, it is characterised in that described Copper strip shielding layer overlaps wrapped, Duplication 17%～22% by nominal thickness for the copper strips of 0.12mm, and copper strips lapping direction is a left side To.
7. middle pressure optical fiber composite cable is laid after a kind of new light unit according to claim 1, it is characterised in that described Overlap overlap length >=the 6mm of aluminum plastic composite belt longitudinal covering, lap-joint adopts adhesive bonding.
CN201710056122.6A 2017-01-25 2017-01-25 Novel middle-voltage optical fiber composite cable laid behind optical unit Withdrawn CN106653173A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107945965A (en) * 2017-12-13 2018-04-20 江苏东强股份有限公司 High security answering machine data transmission cable and its manufacture method
CN111816354A (en) * 2020-06-29 2020-10-23 江苏亨通电子线缆科技有限公司 Capacity-expandable photoelectric composite cable for forest fire prevention early warning system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107945965A (en) * 2017-12-13 2018-04-20 江苏东强股份有限公司 High security answering machine data transmission cable and its manufacture method
CN107945965B (en) * 2017-12-13 2024-03-12 江苏东强股份有限公司 High-safety transponder data transmission cable and manufacturing method thereof
CN111816354A (en) * 2020-06-29 2020-10-23 江苏亨通电子线缆科技有限公司 Capacity-expandable photoelectric composite cable for forest fire prevention early warning system

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