CN105976904A - Manufacturing process for low-smoke halogen-free fireproof heat-insulating composite power cable - Google Patents
Manufacturing process for low-smoke halogen-free fireproof heat-insulating composite power cable Download PDFInfo
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- CN105976904A CN105976904A CN201610289732.6A CN201610289732A CN105976904A CN 105976904 A CN105976904 A CN 105976904A CN 201610289732 A CN201610289732 A CN 201610289732A CN 105976904 A CN105976904 A CN 105976904A
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- 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
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- 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
- G02B6/4432—Protective covering with fibre reinforcements
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- 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
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- 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
- G02B6/4479—Manufacturing methods of optical cables
- G02B6/4486—Protective covering
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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
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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
- H01B7/02—Disposition of insulation
- H01B7/0275—Disposition of insulation comprising one or more extruded layers of insulation
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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
- H01B7/1875—Multi-layer sheaths
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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
- H01B7/22—Metal wires or tapes, e.g. made of steel
- H01B7/228—Metal braid
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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
-
- 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
- H01B9/006—Constructional features relating to the conductors
-
- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Insulated Conductors (AREA)
Abstract
The invention discloses a manufacturing process for a low-smoke halogen-free fireproof heat-insulating composite power cable. The power cable is formed by an outer wrapping layer and an inner core, wherein the inner core is formed by twisting cable cores and an optical cable unit. The optical cable unit is cabled by twisting a reinforcing member and loose sleeve assemblies arranged on the periphery of the reinforcing member, and each cable core is formed by a conductor and an insulating shield composite layer extruded outside the conductor. The outer wrapping layer is formed by sequentially wrapping a thermal insulation layer, a fireproof layer, an oxygen-barrier layer, an impact resisting layer and an outer sheath layer. The power cable has the functions of information communication and power transmission. The optical unit is formed by employing a non-metal structure which is directly composited on the side edge of cabling cores of the power cable. The external diameter of the product is identical with that of a common low-voltage power cable. On the premise of no increasing of cable laying cost, the power cable FTTH upper end connection, power cable monitoring and early warning functions are realized. The fault respond speed is increased, the maintenance cost of a line is reduced, and the power cable has excellent fireproof and heat insulation functions.
Description
Technical field
The invention belongs to technical field of cable, be specifically related to the processing technology of the heat insulation composite power cable of a kind of low-smoke zero-halogen fire-resistant.
Background technology
At present, along with Chinese society rapid development of economy, the place of the important job facilities such as subway, tunnel, power plant, nuclear power station and the densely populated place such as large supermarket, conference and exhibition center gets more and more, owing to load uses Medium voltage power supply system to the requirement of electric power, security performance in the case of 6～35kV cable fires is proposed requirement, require that cable remains to maintain a period of time normal power supply under flame conditions, in order to escape and rescue, so being badly in need of a kind of fire-resistant optical fiber composite medium-pressure cable.
Along with the fast development of the modernization of society, urban constructionization is built more and more crowded, so building can only be toward aerial development.High building (without Hong Kong, Macao and Taiwan, the project without planning) in China's Program Construction just has 10 projects: Shanghai Center Building (Shanghai Center Tower) 632 meters, 121 layers；597 meters, 117 mansion of Tianjin China, 117 layers；Capital, Shenzhen fund melts central plaza 439 meters, 97 layers；384.2 meters of Shenyang Heng Long municipal government square, 76 layers；Yu Jing center, Dalian (Dalian Eton
Center) 383 meters, 80 layers；360 meters, Guang Sheng International Building, Guangzhou, 59 layers；Ge Zhou Ba, Wuhan International Square 350 meters, 69 layers；The Nanjing Deji Plaza second phase 339 meters, 70 layers；333 meters of Jia Li center, Tianjin, 72 layers；330 meters, International Building of wave height associating, Chongqing, 72 layers.Designing according to floor economic performance, the equipment for power transmission and distribution installation storey setting as electric power is the most economical at top layer.This is accomplished by vertically being attached in high building with a midium voltage cable, medium voltage electricity is delivered to from building roof, is then depressured to required voltage for building.In order to fully use space, the general cable shaft space giving cable lifting is also limited, it is the smaller the better for economically setting out, so crane cable lay generally high building top layer stress, the equal stress of cable remainder is suspended in high building in the pulling force on summit, centre does not stresses, so this construction of cable just has the biggest difference with normal cable.
Skyscraper is typically more than 300 meters, so personnel are the most substantially by elevator, so in skyscraper, even if breaking out of fire, escape of also going downstairs from elevator.The most all security protection facilities are also required to driven by power.So as the overall channel transmitted electricity to building is pressed crane cable must possess when fire is carried out can the performance of maintenance energising, namely possess fire-resistance property.Must there is low-smoke non-halogen flame-retardant characteristic, it is ensured that breaking out of fire Shi Gei building personnel strive for safer escape environment simultaneously.
Although prior art also has some patent documentations with middle pressure fire-resisting cable about high-rise crane cable, but its construction of cable is to consider high-rise lifting and fire resistance respectively, do not consider two performances jointly to possess, structure otherwise for fire-proof medium-voltage cable, only only account for cable when fire occurs, use temperature insulating material that the heat that fire produces is blocked in the structure of outside, but such structure also counteracts that in cable normal course of operation cable conductor due to electric current by and the heat that produces distribute outward, or finally affect the service life of the current capacity cable of cable.
Wherein, about the public technology of crane cable for high-building mainly with Chinese patent
CN200510094704.0 disclosed " crane cable for high-building " is main design route.This invention is the improvement to skyscraper three core high pressure crane cables, it is characterized in that insulated core uses single insulated cable, between single insulated cable with three by carrying steel core outsourcing insulation cross section be cambered-surface fan-shaped fill, both twisted synthesizing cables, periphery by high intensity band binding tighten.This invention uses cambered-surface fan-shaped supporting body big with adjacent cable core contact area, substantially increase frictional force between the two, auxiliary twisted synthesizing cable, binding are tightened and are more increased frictional force and globality between the two, significantly put forward cable entirety tensile strength, thus the most overall tensile strength can be born, make it possible to adapt to 150 meters or higher building hanging is laid.Being conducive to improving current-carrying capacity of cable, flow can improve about 10-30% simultaneously, and cable weight can alleviate 20 ~ 30%, greatly reduces cable cost.Cambered-surface fan-shaped supporting body is little to cable side pressure, and the safe and reliable property of cable is good, and three distinguish carrying absolute construction, reduce technique production difficulty.From the point of view of product structure, this cable possesses high-rise lifting function, does not possess fire-resistance property.So this cable is in the case of high-rise building with fire disaster, do not possesses continuation for ability.So after breaking out of fire, all electrical equipments of skyscraper can only maintain by the electric power stored at ordinary times, but the electricity of storage is limited, say, that the substantial amounts of security protection facility that technology designs in skyscraper, cannot play from design function due to supply of electric power deficiency.
And about middle pressure fire-resisting cable public technology mainly with Chinese patent
CN200710190369.3 disclosed " middle pressure fire-resisting cable " is main design route.This invention relates to pressure transmission of electricity fire-resisting cable in one, it is characterized in that the outer flame retardant coating of middle pressure cable core is, inner side refractory inorganic fiber thermal insulation layer, and outside normally uses as soft type thermo-setting elastomer, meets and catch fire, and is changed into the composite fire thermal insulation layer of gear fire screen thermosphere, described thermo-setting elastomer, by
The silica-based elastomeric material of 30-50wt%, 40-60wt% inorganic fillings, 5-15wt%
Middle low temperature frit, 4-10wt% vulcanizing agent, mix extruded, sulfuration form.This composite fire thermal insulation layer, under not running into flame conditions, it it is relatively soft jacket material, the excellent bending performance of fireproof construction when may insure that normal, it is changed into the most rapidly package shape refractory heat-insulating structure when meeting fire or high temperature, remains to maintain certain time to be not damaged by fire fighting environment, effectively stop flame or the high temperature damage to primary insulation, when 850 DEG C of flame temperatures of outer layer, inner side insulating surface temperature is less than 180 DEG C.Such patent also has
ZL200720042350.X, ZL201120193504.1, ZL201120096435.2 etc., its basic ideas are all to set up thermal insulation gear fire bed outside midium voltage cable metallic shield, this layer material is mostly magnetization silica gel, it is the material of elastomer properties when without burning, is magnetized gear fire bed effect after burning.Such structure has certain fire resistance, but magnetization silicone rubber to play enough resistance to fire actions after magnetization, need enough thickness, but insulating layer can intercept external flame temperature to cable internal delivery, the most also the heat that produces transmits to the periphery due to electric power transmission to have intercepted cable, that is this cable uses the heat sinking function of such structure influence cable, ultimately results in the decline of the current capacity of cable.Additionally this construction of cable does not terminate to thermal insulation gear fire bed, and outside also has wrapped fire-barrier material and fire-retardant outer sheath material, and these all cause the further decline of cable current capacity to the heat dispersion of cable by impacting.So such structure is the most energy-conservation, need further to optimize.
The another kind of newer thinking of middle pressure fire-resisting cable public technology is Chinese patent
ZL201220559823.4 disclosed " pressing fire-resisting cable in self-locking armouring ".This utility model relates to pressing in self-locking armouring fire-resisting cable, including: cable core and be wrapped in the refractory insulating layer outside described cable core, sheath, armor, oxygen barrier layer and oversheath successively.Cable core includes that multiple metallic shield insulated wire cores, the quantity of described metallic shield insulated wire cores are 3, and described metallic shield insulated wire cores is triangle disposition arrangement, is provided with implant between described metallic shield insulated wire cores.Armor is copper or copper alloy self-locking armouring.The material of oxygen barrier layer is halogen-free low-smoke high-flame cable material of polyolefin.From structure, this cable has 5 layers of sheath outward from one-tenth cable core, its purpose is that thermal insulation keeps off fire action, play is the flame-retarding characteristic of this floor height and high heat resistance characteristic, outside the high temperature that flame and flame bring being blocked in cable insulation core, but the most abundant structure affects the heat dissipation characteristics of cable equally, ultimately result in the decline of the current capacity of cable.
Summary of the invention
Goal of the invention: the invention aims to solve deficiency of the prior art, it is provided that one is provided simultaneously with information communication and electric power transfer function.Light unit uses nonmetal structure direct combination at the avris of power cable forming core, product external diameter is identical with pressure common power cable external diameter, in the case of not increasing cable laying cost, can synchronize to realize power optical fiber to connect to the upper end at family and the function such as power circuit monitoring, early warning, improve fault reaction speed, reduce the maintenance cost of circuit, there is the processing technology of the heat insulation composite power cable of low-smoke zero-halogen fire-resistant of good fire-resistant and heat insulating function simultaneously.
Technical scheme: a kind of heat insulation composite power cable of low-smoke zero-halogen fire-resistant of the present invention, described cable is made up of surrounding layer and inner core, inner core is formed by cable core and optical cable unit are stranded, inner core uses three of the cables core, three of the cables core is arranged in triangle, and arranges optical cable unit at a side of triangle；
Described optical cable unit is by a reinforcement and the Loose tube group twisted synthesizing cable being located at reinforcement surrounding; described optical cable unit is provided with the Loose tube group of 4-6 Loose tube composition; the center of Loose tube group is provided with the reinforcement that resin fibre reinforced plastics FRP makes; the outside of described Loose tube group extrudes protection set; it is equipped with optical fiber cable core in each Loose tube; protection set is made up of waterstop and resistance to electricity trace sheath; between described protection set and Loose tube, between Loose tube and reinforcement, it is filled with water blocking yarn；Described Loose tube external diameter is 2.0-2.5mm, and wall thickness is more than or equal to 0.35mm, is provided with 2～12 core fibres in each Loose tube；
Described cable core is by conductor and is extruded in the insulation shielding composite bed outside conductor and constitutes, and described insulation shielding composite bed is wrapped up successively by conductor shield, insulating barrier and insulation screen and forming, and is enclosed with metal screen layer outside insulation shielding composite bed；The ratio of the thickness of conductor shield, insulating barrier and insulation screen is 1:5:1
；Described metal screen layer employing copper strips overlap is wrapped to be formed；
Described surrounding layer is wrapped up successively by thermal insulation layer, flame retardant coating, oxygen barrier layer, anti-impacting layer and external sheath layer and forming；Between described thermal insulation layer and inner core, it is filled with alkali-free glass rope between cable core and the optical cable unit of inner core, described alkali-free glass rope surface-coated has nano-aluminum hydroxide, described thermal insulation layer to be prepared from by the material of following weight portion: EVA:20 ~ 35 part, LLDPE
Plastics: 10 ~ 25 parts, AL (OH) 3:45 ~ 55 part, Mg (OH) 2:25 ~ 40 part, pluronic polymer 2-5 part, adhesive 5-10 part；Flame retardant coating uses ceramic polyolefin material to be extruded on thermal insulation layer and makes, and the thickness of flame retardant coating is 2-4mm；Oxygen barrier layer uses low smoke and zero halogen oxygen barrier material, is extruded on flame retardant coating, and thickness is 1.2～2.2mm.
Further, described anti-impacting layer uses compound steel braid over braid gap to put up mode and makes in oxygen barrier layer around wrapping in, and steel braid over braid uses rustless steel steel braid over braid or galvanized steel braid over braid.
Further, described oversheath flame-proof polyethylene goods low smoke and zero halogen protective cover material is made, and thickness is 1.8-2.5mm
；Insulating barrier uses low smoke and zero halogen cross-linked polyethylene insulating material to extrude and forms.
Further, described pluronic polymer uses polyvinylpyrrolidone, hydroxypropyl Oxytarch succinate sodium, one or more the combination of coconut palm oleoyl monoethanolamine and sodium metnylene bis-naphthalene sulfonate.
Further, described adhesive uses Ludox.
The invention also discloses the processing technology of the above-mentioned heat insulation composite power cable of a kind of low-smoke zero-halogen fire-resistant, described processing technology comprises the steps:
A, making cable core, carry out compression process by circular copper conductors so that the conductor diameter after compression reduces 11%, then at compacted conductor outer extruded insulation shielding composite bed, makes cable core standby；
B, making optical cable unit; first optical fiber loose tube is made; 2-12 core fibre it is provided with in optical fiber loose tube; 4-6 root optical fiber loose tube is formed a circle; reinforcement is set at circle center; then make optical cable unit at optical fiber loose tube outer cladding protection set, between described protection set and Loose tube, between Loose tube and reinforcement, be filled with water blocking yarn；
C, prepare thermal insulation layer: thermal insulation layer is prepared from by the material of following weight portion: EVA:20 ~ 35 part, LLDPE
Plastics: 10 ~ 25 parts, AL (OH) 3:45 ~ 55 part, Mg (OH) 2:25 ~ 40 part, pluronic polymer 2-5 part, adhesive 5-10 part；
D, product mix: carry out stranding after being extruded together with cable core by optical cable unit, extrude thermal insulation layer, flame retardant coating, oxygen barrier layer, anti-impacting layer and external sheath layer outside optical cable unit with cable core successively.
Further, in a step, insulation shielding composite bed is wrapped up successively by conductor shield, insulating barrier and insulation screen and forming, and is enclosed with metal screen layer outside insulation shielding composite bed；The ratio of the thickness of conductor shield, insulating barrier and insulation screen is 1:5:1
；Described metal screen layer uses that proof copper-wire braided is wrapped to be formed；
Further; in b step; optical cable unit is provided with the Loose tube group of 4-6 Loose tube composition; the center of Loose tube group is provided with the reinforcement that resin fibre reinforced plastics FRP makes; described protection set is made up of waterstop and resistance to electricity trace sheath; between described protection set and Loose tube, between Loose tube and reinforcement, it is filled with water blocking yarn；Described Loose tube external diameter is 2.0～2.5mm, and wall thickness is more than or equal to 0.35mm, is provided with 2～12 core fibres in each Loose tube.
Further, in d step, using three of the cables core during combination, three of the cables core is arranged in triangle, and arranges light unit at a side of triangle, 0.3-0.4 times of a diameter of cable core diameter of optical cable unit.
Further, in Step d, between described thermal insulation layer and inner core, it is filled with alkali-free glass rope between cable core and the optical cable unit of inner core, described alkali-free glass rope surface-coated has nano-aluminum hydroxide, and thermal insulation layer is formed by alkali-free glass fibre band is wrapped, and thickness is 0.4-0.6mm；Flame retardant coating uses ceramic polyolefin material to be extruded on thermal insulation layer and makes, and the thickness of flame retardant coating is 2-4mm；Oxygen barrier layer uses low smoke and zero halogen oxygen barrier material, is extruded on flame retardant coating, and thickness is 1.2～2.2mm；Anti-impacting layer uses compound steel braid over braid gap to put up mode and makes in oxygen barrier layer around wrapping in, and steel braid over braid uses rustless steel steel braid over braid or galvanized steel braid over braid；Oversheath flame-proof polyethylene goods low smoke and zero halogen protective cover material is made, and thickness is 1.8-2.5mm.
Beneficial effect: the present invention is provided simultaneously with information communication and electric power transfer function.Light unit uses nonmetal structure direct combination at the avris of power cable forming core, product external diameter is identical with pressure common power cable external diameter, in the case of not increasing cable laying cost, can synchronize to realize power optical fiber to connect to the upper end at family and the function such as power circuit monitoring, early warning, improve fault reaction speed, reduce the maintenance cost of circuit, there is good fire-resistant and heat insulating function simultaneously.
Accompanying drawing explanation
Fig. 1 is the construction of cable schematic diagram of the present invention；
Fig. 2 is the optical cable unit structural representation of the present invention.
Detailed description of the invention
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
Label in each accompanying drawing is expressed as follows:
1 optical cable unit, 11 Loose tube, 12 water blocking yarns, 13 reinforcements, 14 optical fiber, 15 waterstops, 16 resistance to electricity trace sheaths；
2 cable cores, 21 conductors, 22 conductor shields, 23 insulating barriers, 24 insulation screens, 25 metal screen layers；
3 alkali-free glass ropes, 4 thermal insulation layers, 5 flame retardant coatings, 6 oxygen barrier layers, 7 anti-impacting layers, 8 external sheath layers.
A kind of heat insulation composite power cable of low-smoke zero-halogen fire-resistant of the present invention, described cable is made up of surrounding layer and inner core, inner core is by cable core 2 and optical cable unit 1 is stranded forms, inner core uses three of the cables core, three of the cables core is arranged in triangle, and arranges optical cable unit at a side of triangle；
Described optical cable unit 1 is by a reinforcement and the Loose tube group twisted synthesizing cable being located at reinforcement surrounding; described optical cable unit is provided with the Loose tube group of 4-6 Loose tube composition; the center of Loose tube group is provided with the reinforcement that resin fibre reinforced plastics FRP makes; the outside of described Loose tube group extrudes protection set; it is equipped with optical fiber cable core in each Loose tube; protection set is made up of waterstop and resistance to electricity trace sheath; between described protection set and Loose tube, between Loose tube and reinforcement, it is filled with water blocking yarn；Described Loose tube external diameter is 2.0-2.5mm, and wall thickness is more than or equal to 0.35mm, is provided with 2～12 core fibres in each Loose tube；
Described cable core 2 is by conductor and is extruded in the insulation shielding composite bed outside conductor and constitutes, and described insulation shielding composite bed is wrapped up successively by conductor shield, insulating barrier and insulation screen and forming, and is enclosed with metal screen layer outside insulation shielding composite bed；The ratio of the thickness of conductor shield, insulating barrier and insulation screen is 1:5:1
；Described metal screen layer employing copper strips overlap is wrapped to be formed；
Described surrounding layer is wrapped up successively by thermal insulation layer, flame retardant coating, oxygen barrier layer, anti-impacting layer and external sheath layer and forming；Between described thermal insulation layer and inner core, it is filled with alkali-free glass rope between cable core and the optical cable unit of inner core, described alkali-free glass rope surface-coated has nano-aluminum hydroxide, described thermal insulation layer to be prepared from by the material of following weight portion: EVA:20 ~ 35 part, LLDPE
Plastics: 10 ~ 25 parts, AL (OH) 3:45 ~ 55 part, Mg (OH) 2:25 ~ 40 part, pluronic polymer 2-5 part, adhesive 5-10 part；Flame retardant coating uses ceramic polyolefin material to be extruded on thermal insulation layer and makes, and the thickness of flame retardant coating is 2-4mm；Oxygen barrier layer uses low smoke and zero halogen oxygen barrier material, is extruded on flame retardant coating, and thickness is 1.2～2.2mm.
Further, described anti-impacting layer uses compound steel braid over braid gap to put up mode and makes in oxygen barrier layer around wrapping in, and steel braid over braid uses rustless steel steel braid over braid or galvanized steel braid over braid.
Further, described oversheath flame-proof polyethylene goods low smoke and zero halogen protective cover material is made, and thickness is 1.8-2.5mm
；Insulating barrier uses low smoke and zero halogen cross-linked polyethylene insulating material to extrude and forms.
Further, described pluronic polymer uses polyvinylpyrrolidone, hydroxypropyl Oxytarch succinate sodium, one or more the combination of coconut palm oleoyl monoethanolamine and sodium metnylene bis-naphthalene sulfonate.
Further, described adhesive uses Ludox.
The processing technology of the above-mentioned heat insulation composite power cable of a kind of low-smoke zero-halogen fire-resistant, described processing technology comprises the steps:
A, making cable core, carry out compression process by circular copper conductors so that the conductor diameter after compression reduces 11%, then at compacted conductor outer extruded insulation shielding composite bed, makes cable core standby；
B, making optical cable unit; first optical fiber loose tube is made; 2-12 core fibre it is provided with in optical fiber loose tube; 4-6 root optical fiber loose tube is formed a circle; reinforcement is set at circle center; then make optical cable unit at optical fiber loose tube outer cladding protection set, between described protection set and Loose tube, between Loose tube and reinforcement, be filled with water blocking yarn；
C, prepare thermal insulation layer: thermal insulation layer is prepared from by the material of following weight portion: EVA:20 ~ 35 part, LLDPE
Plastics: 10 ~ 25 parts, AL (OH) 3:45 ~ 55 part, Mg (OH) 2:25 ~ 40 part, pluronic polymer 2-5 part, adhesive 5-10 part；
D, product mix: carry out stranding after being extruded together with cable core by optical cable unit, extrude thermal insulation layer, flame retardant coating, oxygen barrier layer, anti-impacting layer and external sheath layer outside optical cable unit with cable core successively.
Further, in a step, insulation shielding composite bed is wrapped up successively by conductor shield, insulating barrier and insulation screen and forming, and is enclosed with metal screen layer outside insulation shielding composite bed；The ratio of the thickness of conductor shield, insulating barrier and insulation screen is 1:5:1
；Described metal screen layer uses that proof copper-wire braided is wrapped to be formed；
Further; in b step; optical cable unit is provided with the Loose tube group of 4-6 Loose tube composition; the center of Loose tube group is provided with the reinforcement that resin fibre reinforced plastics FRP makes; described protection set is made up of waterstop and resistance to electricity trace sheath; between described protection set and Loose tube, between Loose tube and reinforcement, it is filled with water blocking yarn；Described Loose tube external diameter is 2.0～2.5mm, and wall thickness is more than or equal to 0.35mm, is provided with 2～12 core fibres in each Loose tube.
Further, in d step, using three of the cables core during combination, three of the cables core is arranged in triangle, and arranges light unit at a side of triangle, 0.3-0.4 times of a diameter of cable core diameter of optical cable unit.
Further, in Step d, between described thermal insulation layer and inner core, it is filled with alkali-free glass rope between cable core and the optical cable unit of inner core, described alkali-free glass rope surface-coated has nano-aluminum hydroxide, and thermal insulation layer is formed by alkali-free glass fibre band is wrapped, and thickness is 0.4-0.6mm；Flame retardant coating uses ceramic polyolefin material to be extruded on thermal insulation layer and makes, and the thickness of flame retardant coating is 2-4mm；Oxygen barrier layer uses low smoke and zero halogen oxygen barrier material, is extruded on flame retardant coating, and thickness is 1.2～2.2mm；Anti-impacting layer uses compound steel braid over braid gap to put up mode and makes in oxygen barrier layer around wrapping in, and steel braid over braid uses rustless steel steel braid over braid or galvanized steel braid over braid；Oversheath flame-proof polyethylene goods low smoke and zero halogen protective cover material is made, and thickness is 1.8-2.5mm.
The present invention is provided simultaneously with information communication and electric power transfer function.Light unit uses nonmetal structure direct combination at the avris of power cable forming core, product external diameter is identical with pressure common power cable external diameter, in the case of not increasing cable laying cost, can synchronize to realize power optical fiber to connect to the upper end at family and the function such as power circuit monitoring, early warning, improve fault reaction speed, reduce the maintenance cost of circuit, there is good fire-resistant and heat insulating function simultaneously.
The above, it it is only presently preferred embodiments of the present invention, not the present invention is made any pro forma restriction, although the present invention is disclosed above with preferred embodiment, but it is not limited to the present invention, any those skilled in the art, in the range of without departing from technical solution of the present invention, when the technology contents of available the disclosure above makes a little change or is modified to the Equivalent embodiments of equivalent variations, in every case it is the content without departing from technical solution of the present invention, any simple modification above example made according to the technical spirit of the present invention, equivalent variations and modification, all still fall within the range of technical solution of the present invention.
Claims (10)
1. the heat insulation composite power cable of low-smoke zero-halogen fire-resistant, it is characterized in that: described cable is made up of surrounding layer and inner core, inner core is formed by cable core and optical cable unit are stranded, inner core uses three of the cables core, three of the cables core is arranged in triangle, and arranges optical cable unit at a side of triangle；
Described optical cable unit is by a reinforcement and the Loose tube group twisted synthesizing cable being located at reinforcement surrounding; described optical cable unit is provided with the Loose tube group of 4-6 Loose tube composition; the center of Loose tube group is provided with the reinforcement that resin fibre reinforced plastics FRP makes; the outside of described Loose tube group extrudes protection set; it is equipped with optical fiber cable core in each Loose tube; protection set is made up of waterstop and resistance to electricity trace sheath; between described protection set and Loose tube, between Loose tube and reinforcement, it is filled with water blocking yarn；Described Loose tube external diameter is 2.0-2.5mm, and wall thickness is more than or equal to 0.35mm, is provided with 2～12 core fibres in each Loose tube；
Described cable core is by conductor and is extruded in the insulation shielding composite bed outside conductor and constitutes, and described insulation shielding composite bed is wrapped up successively by conductor shield, insulating barrier and insulation screen and forming, and is enclosed with metal screen layer outside insulation shielding composite bed；The ratio of the thickness of conductor shield, insulating barrier and insulation screen is 1:5:1；Described metal screen layer employing copper strips overlap is wrapped to be formed；
Described surrounding layer is wrapped up successively by thermal insulation layer, flame retardant coating, oxygen barrier layer, anti-impacting layer and external sheath layer and forming；Between described thermal insulation layer and inner core, it is filled with alkali-free glass rope between cable core and the optical cable unit of inner core, described alkali-free glass rope surface-coated has nano-aluminum hydroxide, described thermal insulation layer is prepared from by the material of following weight portion: EVA:20 ~ 35 part, LLDPE plastics: 10 ~ 25 parts, AL (OH) 3:45 ~ 55 part, Mg (OH) 2:25 ~ 40 part, pluronic polymer 2-5 part, adhesive 5-10 part；Flame retardant coating uses ceramic polyolefin material to be extruded on thermal insulation layer and makes, and the thickness of flame retardant coating is 2-4mm；Oxygen barrier layer uses low smoke and zero halogen oxygen barrier material, is extruded on flame retardant coating, and thickness is 1.2～2.2mm.
2. according to the heat insulation composite power cable of a kind of low-smoke zero-halogen fire-resistant described in claim 1, it is characterized in that: described anti-impacting layer uses compound steel braid over braid gap to put up mode and makes in oxygen barrier layer around wrapping in, and steel braid over braid uses rustless steel steel braid over braid or galvanized steel braid over braid.
3. according to the heat insulation composite power cable of a kind of low-smoke zero-halogen fire-resistant described in claim 1, it is characterised in that: described oversheath flame-proof polyethylene goods low smoke and zero halogen protective cover material is made, and thickness is 1.8-2.5mm；Insulating barrier uses low smoke and zero halogen cross-linked polyethylene insulating material to extrude and forms.
4. according to the heat insulation composite power cable of a kind of low-smoke zero-halogen fire-resistant described in claim 1, it is characterised in that: described pluronic polymer uses polyvinylpyrrolidone, hydroxypropyl Oxytarch succinate sodium, one or more the combination of coconut palm oleoyl monoethanolamine and sodium metnylene bis-naphthalene sulfonate.
5. according to the heat insulation composite power cable of a kind of low-smoke zero-halogen fire-resistant described in claim 1, it is characterised in that: described adhesive uses Ludox.
6. the processing technology of the heat insulation composite power cable of low-smoke zero-halogen fire-resistant, it is characterised in that: described processing technology comprises the steps:
A, making cable core, carry out compression process by circular copper conductors so that the conductor diameter after compression reduces 11%, then at compacted conductor outer extruded insulation shielding composite bed, makes cable core standby；
B, making optical cable unit; first optical fiber loose tube is made; 2-12 core fibre it is provided with in optical fiber loose tube; 4-6 root optical fiber loose tube is formed a circle; reinforcement is set at circle center; then make optical cable unit at optical fiber loose tube outer cladding protection set, between described protection set and Loose tube, between Loose tube and reinforcement, be filled with water blocking yarn；
C, prepare thermal insulation layer: thermal insulation layer is prepared from by the material of following weight portion: EVA:20 ~ 35 part, LLDPE plastics: 10 ~ 25 parts, AL (OH) 3:45 ~ 55 part, Mg (OH) 2:25 ~ 40 part, pluronic polymer 2-5 part, adhesive 5-10 part；
D, product mix: carry out stranding after being extruded together with cable core by optical cable unit, extrude thermal insulation layer, flame retardant coating, oxygen barrier layer, anti-impacting layer and external sheath layer outside optical cable unit with cable core successively.
7. according to the processing technology of the heat insulation composite power cable of a kind of low-smoke zero-halogen fire-resistant described in claim 6, it is characterized in that: in a step, insulation shielding composite bed is wrapped up successively by conductor shield, insulating barrier and insulation screen and forming, and is enclosed with metal screen layer outside insulation shielding composite bed；The ratio of the thickness of conductor shield, insulating barrier and insulation screen is 1:5:1；Described metal screen layer uses that proof copper-wire braided is wrapped to be formed.
8. according to the processing technology of the heat insulation composite power cable of a kind of low-smoke zero-halogen fire-resistant described in claim 6; it is characterized in that: in b step; optical cable unit is provided with the Loose tube group of 4-6 Loose tube composition; the center of Loose tube group is provided with the reinforcement that resin fibre reinforced plastics FRP makes; described protection set is made up of waterstop and resistance to electricity trace sheath; between described protection set and Loose tube, between Loose tube and reinforcement, it is filled with water blocking yarn；Described Loose tube external diameter is 2.0～2.5mm, and wall thickness is more than or equal to 0.35mm, is provided with 2～12 core fibres in each Loose tube.
9. according to the processing technology of the heat insulation composite power cable of a kind of low-smoke zero-halogen fire-resistant described in claim 6, it is characterized in that: in d step, three of the cables core is used during combination, three of the cables core is arranged in triangle, and light unit is set at a side of triangle, 0.3-0.4 times of a diameter of cable core diameter of optical cable unit.
10. according to the processing technology of the heat insulation composite power cable of a kind of low-smoke zero-halogen fire-resistant described in claim 6, it is characterized in that: in Step d, between described thermal insulation layer and inner core, it is filled with alkali-free glass rope between cable core and the optical cable unit of inner core, described alkali-free glass rope surface-coated has nano-aluminum hydroxide, thermal insulation layer is formed by alkali-free glass fibre band is wrapped, and thickness is 0.4-0.6mm；Flame retardant coating uses ceramic polyolefin material to be extruded on thermal insulation layer and makes, and the thickness of flame retardant coating is 2-4mm
；Oxygen barrier layer use low smoke and zero halogen oxygen barrier material, be extruded on flame retardant coating, thickness be 1.2～
2.2mm ；Anti-impacting layer uses compound steel braid over braid gap to put up mode and makes in oxygen barrier layer around wrapping in, and steel braid over braid uses rustless steel steel braid over braid or galvanized steel braid over braid；Oversheath flame-proof polyethylene goods low smoke and zero halogen protective cover material is made, and thickness is 1.8-2.5mm.
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| CN201610289732.6A CN105976904A (en) | 2016-05-05 | 2016-05-05 | Manufacturing process for low-smoke halogen-free fireproof heat-insulating composite power cable |
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| CN108445594A (en) * | 2018-05-02 | 2018-08-24 | 浙江中特互联科技有限公司 | A kind of composite fire indoor flexible optical cable |
| CN108646361A (en) * | 2018-05-21 | 2018-10-12 | 安徽电信器材贸易工业有限责任公司 | A kind of fire protection flame retarding optical cable and its manufacturing method |
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| CN107945951A (en) * | 2017-11-25 | 2018-04-20 | 安徽华通电缆集团有限公司 | A kind of special Through ground wire of composite conductive plastic sheath railway |
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Application publication date: 20160928 |