CN104200899B - A kind of small-bend radius shock resistance light optical fibre power cable and technological process thereof - Google Patents
A kind of small-bend radius shock resistance light optical fibre power cable and technological process thereof Download PDFInfo
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- CN104200899B CN104200899B CN201410467753.3A CN201410467753A CN104200899B CN 104200899 B CN104200899 B CN 104200899B CN 201410467753 A CN201410467753 A CN 201410467753A CN 104200899 B CN104200899 B CN 104200899B
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Abstract
The invention discloses a kind of small-bend radius shock resistance light optical fibre power cable and technological process thereof, including electric power transfer unit, presumable smooth unit, twining package tape, lock armo and oversheath, some electric power transfer unit it are provided with in twining package tape, presumable smooth unit, is cased with lock armo and oversheath successively outside twining package tape.Fiber optic cables of the present invention change existing steel band and the best problem of wire armoring type cable bend and the problem of heavier-weight；Special lock armo has the fabulous protective effect of protection to cable, and the present invention (optical fiber) cable can the most exposed lay without impacting the safety of personnel and equipment；Cable minimum bending radius is only 7 times of external diameter, is particularly well-suited to laying of narrow and small environment；Light unit can be introduced the most in the cable for the transmission of information and monitoring of tools simultaneously, expand the use of cable, add the safety that cable uses, decrease construction cost.
Description
Technical field
Present invention relates particularly to a kind of small-bend radius shock resistance light optical fibre power cable and technological process thereof,
Particularly to one for the most exposed power transmission cable that lays of civil buildings short distance, specified electricity
Pressure grade is exchange 0.6/1kV, can add light unit in the cable in the occasion needing signal to transmit and form light
Photoelectric compound cable structure.Simultaneously by selecting the insulation of particular design and jacket material, be usable in humidity,
Direct sunlight and high salinity occasion.
Background technology
Existing power cable conductor generally uses copper conductor and aluminium conductor, and the mechanical performance of copper conductor is with electric
Attachment security performance is excellent, but causes greatly cable heavier due to density, and in transport and installation process, difficulty is relatively
Greatly, additionally price is the highest；Aluminium conductor lightweight, price is low, but owing to its creep-resistant property is poor,
Frequently easily cause joint lax during power on/off thus cause even fire of striking sparks.
Needing opposing foreign impacts and needing the occasion of mechanical protection, current common practice is to use steel band
The wrapped sheathed structure of wrapped or steel wire, but owing to the wrapped armouring of steel band and the wrapped armouring of steel wire belong to " scleroma
Structure ", easily insulation is produced when cable bend extruding injury: insulation can be produced by particularly steel band sharp edge
Cutting damage causes the electrical safety hidden danger such as most advanced and sophisticated sparking, short circuit；So needing to add between insulation and armouring
Insulation is protected by lined layer, the strictest bending radius (>=12 times of outside diameters of cable) limiting cable
Avoid the damage to insulation；But such structure brings two new problems: the introducing of inner liner adds
The external diameter of cable and weight；Space needed for the installation that long radius causes increases, and causes the difficulty installed
Increase.
Summary of the invention
Goal of the invention: in order to solve the deficiencies in the prior art, the invention provides a kind of small-bend radius anti-impact
Hit light optical fibre power cable and technological process thereof.
Technical scheme: a kind of small-bend radius shock resistance light optical fibre power cable, including electric power transfer unit,
Twining package tape, aluminum alloy strip lock armo and oversheath, be provided with some electric power transfer unit in described twining package tape,
Aluminum alloy strip lock armo and oversheath it is cased with successively outside twining package tape；Described electric power transfer unit by copper conductor or
Aluminium alloy conductor and crosslinked polyetylene insulated composition: wherein aluminium alloy conductor uses high conductivity and high creep resistant
Single line through roll-forming processing technique, the activity coefficient of conductor has reached more than 93%, has reduced to greatest extent
The external diameter of conductor, compared with the identical electric property copper conductor, weight reduces 50%；Simultaneously after overvoltage
Heat treatment, the bending radius of conductor is splendid；Insulation use cross-linking polyethylene materials have good electric property,
The advantages such as resistance to chemical attack is strong, the density of crosslinked polyethylene is only 0.93g/cm3 simultaneously, greatly reduces
The weight of insulation；Described oversheath uses polrvinyl chloride (PVC), polyethylene (PE), polyolefin (PO)
And stainless steel tube.
Twining package tape primarily serves in the cable and tightens cable core, prevents the loose effect of cable core.At flame retardant type cable
In also act as the effect preventing propagation of flame.The S domes of lock armo sophisticated design, very big limit is protected
Impact to external world and the defensive ability/resistance ability of damaged by rats damage are demonstrate,proved, simultaneously because special S type structure ensure that band edge
Will not produce with electric power transfer unit and fiber unit and contact, also will not be to said units when small-bend radius
Produce damage；Simultaneously because the excellent bending property of lock armo itself；The minimum bending radius of cable is only
For the outside diameter of cable 7 times.Lock armo band can use aluminum alloy strip, galvanized steel strip and stainless steel band.Connection
Lock armouring unjacked cable is applicable to the exposed of indoor seasoning environment and lays.Lock armo has jacketed cable, can
To be designed as flame retardant type, ultraviolet-resisting as required；It is suitable for buried, cable duct, body of wall inside or sunlight
The use occasion that direct projection etc. are harsh.
As optimization: be additionally provided with fiber unit and some gasket for packings in described twining package tape, carried out by gasket for packing
Filling, described gasket for packing is polypropylene mesh tear rope and extrusion type filling plastic band.Filling Main Function is
By the filling rounding of cable, hydrops environment is used material water-proof material can also be used to fill.Itself is become
Cable external diameter, compared with the cable of rounding, can remove interstitital texture to alleviate the weight of cable further.Fiber unit
Can play data transmission and the effect of process monitoring in the cable, optical fiber is for the long range propagation tool of data
Having that transmission capacity is big, long transmission distance, transmission quality will not be by advantages such as the interference of electromagnetism.We utilize
Fiber unit transmission data, communication equipment on the way and terminal are powered by electric power transfer unit, it is ensured that number
The access of the number of it is believed that will not be affected by destination's power supply situation.The stability of the data communication provided is with strong
Strong property；Monitoring device can be set at the access point of cable simultaneously, and utilize fiber unit to carry out data transmission,
Realize long-distance intelligentization monitoring, it is ensured that the safety of cable operation and economy.Type according to optical fiber can
It is divided into multimode fibre and single-mode fiber, according to the classification of structure, layer strand dry type (CG), layer strand can be divided into
Filled type (CTG), central canal dry type (XG), central canal filled type (XTG) and butterfly optical cable
(BG).Place the fiber in cable, can be with the space of Appropriate application cable, cost increase is the least, and base
Optical fiber can be protected by good shock resistance in the present invention well, prevents mechanical external force, Mus
Sting equivalent damage.
As optimization: the number of described electric power transfer unit is 1-5.
The technological process of a kind of small-bend radius shock resistance light optical fibre power cable, comprises the steps:
(1) copper conductor produces: and copper conductor up-drawing method is cold rolling → copper conductor Lian Lalian moves back → and copper conductor is stranded；
No-oxygen copper plate or copper ingot are put into after preheating and is formed through cold rolling process through up-drawing method pull-out after smelting furnace melts
Hard-packed hard copper bar, is then drawn into the copper monofilament in regulation line footpath by this hard copper bar by copper wire drawing machine,
In drawing process, by direct current contact, the copper monofilament after drawing is carried out continuous annealing, annealing process is adopted
With aqueous vapor shielded, after drawing, monofilament meets the TR type soft circular copper wire requirement that GB/T 3953-2009 specifies,
For cross-sectional area of conductor 6mm2 and should also conform to GB/T 3956-2008 regulation for the single line of conductor directly below
1st kind of copper conductor requirement；
For needing stranded conductor, copper monofilament pitch as requested, direction of lay twist by pressing mould
Forming compacting pressing conductor after closing drawing, conductor filled coefficient has reached 88%, and the gap between monofilament is reduced, and leads
The smooth rounding in surface, conductor meet GB/T 3956-2008 regulation the 2nd kind press copper conductor want
Ask；
(2) aluminium alloy conductor production procedure: continuous casting and rolling → aluminum alloy drawing, annealing → roll-forming →
Conductor heat treatment；Aluminium ingot and alloying component form φ 9.5mm's through continuous casting and rolling operation after melted insulation
Aluminum bar, is drawn into aluminum bar the aluminium monofilament in regulation line footpath, cuts for conductor by aluminum big drawing machine and aluminum Medium drawing mach ine
Face 6mm2And also need to carry out in drawing process annealing treatment directly below for the aluminium alloy monofilament of conductor
Reason；
For needing stranded conductor, use advanced roll-forming technology that monofilament is pressed into the shape of requirement
" splicing " by mould is complete conductor, and activity coefficient is to more than 93%, and conductive surface is substantially seamless
Gap；Harden due to conductor after roll-forming, it is necessary to conductor is carried out bulk heat treatmet, the monofilament after heat treatment
Tensile strength controls between 89Mpa～159Mpa, and the elongation at break of monofilament is not less than 10%；
Conductor should meet the shaped aluminum alloy conductor requirement that GB/T 3956-2008 specifies simultaneously；
(3) light cellular manufacture flow process:
CG or CTG layer-twisted type structure: drawing optical fibers → optical fiber coating → optical fiber coloring → connection with fibre coating →
Optical fiber, reinforcement stranding → light unit sheath；
XG or XTG center tube structure: drawing optical fibers → optical fiber coating → optical fiber coloring → connection with fibre coating or steel
Pipe cladding → light unit sheath；
BG butterfly cable structure: drawing optical fibers → optical fiber coating → optical fiber coloring → light unit sheath；
Drawing optical fibers uses prefabricated rods to make optical fiber at high temperature furnace lira；Prefabricated rods by feed mechanism with certain
Speed is uniformly sent in tubular heater, and prefabricated rods tip is heated to viscosity during certain temperature, by certainly
Sagging the attenuating of heavy sensation of the body amount forms fiber, and single footpath is by laser beam measuring line footpath instrument precision monitor and moves to lead
Pick-up roll is on reel；
Optical fiber coating and wire drawing are carried out the most simultaneously, and the material of coating is usually silicone resin or esters of acrylic acid
Material, the surface of the optical fiber after coating is protected；
For the occasion needing optical fiber color to distinguish, it is necessary to optical fiber is carried out coloring treatment and to dyed layer UV
Solidification, prevents dyed layer when producing and bend during use, distorting from coming off；
The plastic sleeve of optical fiber has pine set and tightly overlaps two ways, and the occasion for particular/special requirement can also be outside optical fiber
Cladding stainless steel tube；
In layer-twisted type structure, generally use metal reinforcement or non-metal reinforcement member；
Light unit sheath generally uses the mode of extruding cover at optical fiber or become outside cable core；Conventional sheath material
Material has polrvinyl chloride, polyolefin and polyethylene；
(4) insulation production procedure: including: insulating exruded → crosslinking；
High accuracy extruding machine is utilized uniformly to be coated with after extrusion die is shaped after insulant is carried out extrusion molten
Outside conductor, insulating surface should be smooth, and the tangent plane of insulation should be without the most visible pore, insulation extrusion
During should use power frequency spark that insulation carries out defect inspection, only by surface quality, insulation thickness and
The insulated wire cores that spark checks could circulate and arrive cross-linking process step；
Insulated wire cores after producing is placed a period of time in the water of 90 DEG C-98 DEG C or in steam, in crosslinking
Under the effect of agent, molecule is converted into network structure by linear structure, and heat resistance is brought up to 90 DEG C by 70 DEG C,
Environment resistant cracking performance have also been obtained the biggest raising；Insulate after crosslinking and extend qualified rear stream by test heat
Turn；
(5) cabling procedure production procedure:
Structure needs according to cable, by electric power transfer unit, presumable smooth unit according to certain arrangement,
Certain pitch, certain direction of lay twist together a piece cable core of formation, in order to ensure cable core rounding,
Packing material can be added in cable core；Use band that cable core is tightened outside stranding, prevent cable core loose；
, block water occasion fire-retardant, fire-resistant at needs can select filling out of anti-flammability, fire resistance and water preventing ability as required
Fill and band；
(6) lock armo:
Armouring band send band pinch roller to deliver to special mould by lock armo equipment and is rolled into S type rounding
Around being wrapped on cable core or electric power transfer unit；Armouring tape can select high-strength aluminum alloy as required
Band, galvanized steel strip or stainless steel band；
(7) lettering:
Interlocking open armoring lettering can be carried out together with lock armo operation, it is also possible to using lettering as independent work
Sequence is carried out；Using ink lettering, lettering content includes " factory's name model specification rice mark ", and lettering is through getting wet
After cotton wiping 10 times gently the most clear and legible；Sheathing and lettering:
As required, sheath material can use polrvinyl chloride, polyethylene, polyolefin or other satisfied use
The material required, sheath uniform close after extruding machine extrusion die molding is coated on armor；Sheath table
Face should be smooth, and tangent plane is without visible pore；Jacket surface lettering can use ink, coding and impressing etc.
Mode, lettering content should include " factory's name model specification rice mark ", and lettering is through cotton wiping 10 times gently that get wet
After the most clear and legible.
(8) factory testing:
Decay to physical dimension, electric power transfer unit conductor resistance, voltage-withstand test and optical fiber detects；
(9) packaging warehouse-in.
Beneficial effect: in the present invention, cable changes the problem that original armored type cable bend is the best, special
Lock armo guarantees that armouring band edge will not be with insulated contact, it is to avoid insulation is produced cutting damage；Can save
Inner liner, further reduces external diameter and the weight of cable；Special arch lock armo structure can also be right
In armouring, photoelectromotive force transmission unit carries out good protection, according to our test: cable is by 9kN's
Remain under radial compression power keep power supply, it is ensured that the electrical safety performance of cable；Cable can safety naked
Dew lays without impacting the safety of personnel and equipment.The bending property of lock armo structure is excellent,
Minimum bending radius is only 7 times of external diameter, is particularly well-suited to laying of narrow and small environment；According to flame-retardant
Requiring and use the difference of environment, lock armo can select high-strength aluminum alloy band, zinc-plated as required
Steel band or stainless steel band.
Compared with aluminium cable, al alloy component special in the present invention improves fine aluminium conductor in energising power-off
Journey center tap is lax, spark phenomenon, improves the safety and reliability that cable uses.Aluminium alloy has sky
Right corrosion resistance, can be brought up to 40 years by 30 years service life.
Cable introduces optical fiber structure, can preferably be used as signal transmission or do pre-for follow-up upgrading
Stay, it is to avoid repeat excavation and secondary connects up, saved spending.
Cable of the present invention alleviates the weight of cable, reduces the manufacture of cable, transport and installation cost, permissible
Reduce the cable industry consumption to copper, save day by day exhausted copper resource, contribute for Sustainable type development.
The conductor of cable uses unique roll-forming technology, has activity coefficient high (more than 93%), and conductor diameter is little,
The feature that bending property is excellent, waits Special use environment lower conductor to use high-quality oxygen-free copper, commonly fire-resistant
Laying occasion uses me to take charge of the aluminium alloy conductor of independent research, and I takes charge of the aluminium alloy conductor of independent research has and lead
Electrical property excellent (conductivity is the 61.8% of international standard benchmark copper IACS), creep-resistant property is excellent and electric
The feature that gas connective stability is excellent, tests the experiment certification of structure: connecting copper-aluminium transition end by authority
The period of the day from 11 p.m. to 1 a.m, connection reliability more than 40 years.Simultaneously by the technique of the most first annealed after formation, conductor
Bending radius is splendid.
Optical fiber is for the unrivaled advantage of long range propagation of data: transmission capacity is big, long transmission distance,
Transmission quality will not be disturbed by electromagnetism.By both can be by power supply and network signal among optical fibre drop cables
Once access, it is to avoid repeat construction；Again can cable access point increase monitoring device monitor in real time cable and
The electric current of access device and temperature regime also utilize optical fiber quickly to pass back to realize intelligentized long-range control, it is ensured that
The safety of cable operation and economy.
The weight more existing steel-tape armouring copper cable weight of aluminium alloy conductor and aluminum alloy strip lock armo structural cable
Amount declines more than 40%, and relatively wire armoring copper cable weight declines more than 60%.Copper conductor and steel band interlocking armour
Assembling structure cable relatively steel-tape armouring copper cable weight decline more than 20%, relatively wire armoring copper cable decline 30% with
On.
In sum, the feature of summary is as follows:
1) minimum bending radius is only 7 times of the outside diameter of cable, the mounting and installation of the narrowest and small environment.
2) special arch lock armo structure, substantially increases the impact resistance of cable, through authority's machine
The test of structure proves: cable remains to holding under by the radial compression power of 9KN and powers；Cable is special
It is applicable to the exposed environment that lays without personnel and equipment are produced safely impact.
3) can complex light unit in the cable, can be not only used for signal transmission, it is also possible to for cable
The monitoring run.
4) under the conditions of using aluminium alloy conductor and aluminum alloy strip interlock, by use specific insulation and
Jacket material just can be used for the bad environments occasions such as high salinity, open sun direct projection, high humidity.
5) weight of cable is greatly reduced, as a example by aluminium alloy conductor aluminum alloy strip lock armo structure,
Compare with the metal tape armour copper cable of identical electric property, weight reduction more than 40%, with metal tape armour
Aluminium cable compares weight reduction more than 20%.
6) promote cable of the present invention particularly aluminium alloy conductor structural cable and can save limited copper resource
Consume, contribute for sustainable development.
Further, the reason of the minimum bending radius that this technological process can improve cable is: for aluminium alloy
Conductor, the mode of bulk heat treatmet after employing die mould, after heat treatment, the actual crack percentage elongation of conductor monofilament exists
More than 20%, the flexibility of conductor is good, the bending radius of of conductor itself 7 times of conductor diameter to 8
Times, the crosslinked polyetylene insulated parcel power good to conductor is more beneficial for the bending of conductor.
For minimum bending radius is conductor diameter 9 times-10 times of soft copper conductor, extruding insulation and adding
After upper lock armo, the external diameter of cable increases, and reality can meet the bending radius of finished cable 7 times.With
As a example by the crosslinked polyetylene insulated naked lock armo 1 × 400 of minimum core number maximum specification of the present invention: conductor diameter
For 23.6mm, insulate nominal thickness 2.0mm, the space 0.5-1mm between lock armo and insulation, interlocking
A size of 2.6mm after armouring die mould, cable calculates external diameter between 33.3mm-34.2mm, it is contemplated that absolutely
The average thickness requirement of edge thickness, the actual outside diameter of cable should be between 33.4mm-34.2mm, now conductor
Minimum bending radius 23.4 × 10=234mm, the minimum bending radius of finished cable is
234mm-239mm, can meet the minimum bending radius requirement of conductor.
Insulation uses XLPE material, has tensile strength high (>=13.5Mpa), percentage elongation good (>=350%),
Excellent electrical properties (20 DEG C of specific insulation >=1016 Ω cm, 90 DEG C of specific insulation >=1014 Ω)
Feature, under the conditions of 7 times of bending radius of finished cable, its mechanical performance and electric property all have bigger
Surplus.
Particular design buckle structure and the in process of production accurate uniform snap close pitch controlled, it is ensured that at cable
Cable each point uniform force during bending, cable uniformly can bend according to the bending radius of 7 times, without depositing
Cross buckling phenomenon in local and bring potential safety hazard.
Accompanying drawing explanation
Fig. 1 is the unjacked cable structural representation of the present invention；
Fig. 2 be the present invention have jacketed cable structural representation；
Fig. 3 is the lock armo S structural representation of the present invention；
Fig. 4 is the process chart of the present invention.
Detailed description of the invention
Below in conjunction with specific embodiment, the invention will be further described.
Embodiment
As it is shown in figure 1, a kind of small-bend radius shock resistance light optical fibre power cable, single including electric power transmission
Unit 1, twining package tape 4, aluminum alloy strip lock armo 5 and oversheath 6, be provided with some electric power and pass in twining package tape 4
Defeated unit 1, twining package tape 4 is outer is cased with aluminum alloy strip lock armo 5 and oversheath 6 successively；Electric power transmission is single
Unit 1 is by copper conductor or aluminium alloy conductor and crosslinked polyetylene insulated forms: aluminium alloy conductor uses high connductivity
Rate and high creep resistant single line through the molded processing technique of forming roll, the activity coefficient of conductor reached 93% with
On, decrease the external diameter of conductor to greatest extent, compared with identical electric property copper conductor, weight reduces 50%；
Heat treatment after overvoltage simultaneously, the bending radius of conductor is splendid, the cross-linking polyethylene materials that insulation uses
Having the advantages such as good electric property, resistance to chemical attack are strong, the density of crosslinked polyethylene is only simultaneously
0.93g/cm3, greatly reduce the weight of insulation.Oversheath 6 use polrvinyl chloride (PVC), polyethylene (PE),
Polyolefin (PO) and stainless steel tube.Twining package tape primarily serves in the cable and tightens cable core, prevents cable core pine
The effect dissipated.The effect preventing propagation of flame is also acted as in flame retardant type cable.The S of lock armo sophisticated design
Domes, very big limit ensure that impact to external world and the defensive ability/resistance ability of damaged by rats damage, simultaneously because special
S type structure ensure that band edge will not produce with electric power transfer unit and fiber unit and contact, in little bending partly
Also said units will not be produced damage during footpath；Simultaneously because the excellent bending property of lock armo itself；
The minimum bending radius of cable is only 7 times of the outside diameter of cable.Lock armo band can use aluminum alloy strip, plating
Zinc steel band and stainless steel band.Lock armo unjacked cable is applicable to the exposed of indoor seasoning environment and lays.Connection
Lock armouring has jacketed cable, can be designed as flame retardant type, ultraviolet-resisting as required；It is suitable for buried, electric
The harsh use occasions such as cable ditch, body of wall inside or direct sunlight.
It is additionally provided with fiber unit 3 and some gasket for packings 2 in twining package tape 4, is filled out by gasket for packing 2
Filling, gasket for packing 2 is polypropylene mesh tear rope and extrusion type filling plastic band.Filling Main Function is by electricity
The filling rounding of cable, uses for hydrops environment and material water-proof material can also be used to fill.Outside for stranding own
Interstitital texture, compared with the cable of rounding, can be removed to alleviate the weight of cable further in footpath.Fiber unit is at electricity
Can play data transmission and the effect of process monitoring in cable, optical fiber has biography for the long range propagation of data
Defeated capacity is big, long transmission distance, and transmission quality will not be by advantages such as the interference of electromagnetism.We utilize optical fiber
Unit transmission data, communication equipment on the way and terminal are powered by electric power transfer unit, it is ensured that data are believed
Number access will not be affected by destination's power supply situation.The stability of the data communication provided and stalwartness
Property；Monitoring device can be set at the access point of cable simultaneously, and utilize fiber unit to carry out data transmission,
Realize long-distance intelligentization monitoring, it is ensured that the safety of cable operation and economy.Type according to optical fiber can
It is divided into multimode fibre and single-mode fiber, according to the classification of structure, layer strand dry type (CG), layer strand can be divided into
Filled type (CTG), central canal dry type (XG), central canal filled type (XTG) and butterfly optical cable
(BG).Place the fiber in cable, can be with the space of Appropriate application cable, cost increase is the least, and base
Optical fiber can be protected by good shock resistance in the present invention well, prevents mechanical external force, Mus
Sting equivalent damage.
The number of electric power transfer unit 1 is 1-5.
The technological process of a kind of small-bend radius shock resistance light optical fibre power cable, comprises the steps:
(1) copper conductor produces: and copper conductor up-drawing method is cold rolling → copper conductor Lian Lalian moves back → and copper conductor is stranded；
No-oxygen copper plate or copper ingot are put into after preheating and pulls out through cold rolling process through up-drawing method after smelting furnace melts
Form hard-packed hard copper bar, then this hard copper bar is drawn into by copper wire drawing machine the copper list in regulation line footpath
Silk, carries out continuous annealing, annealing process by direct current contact to the copper monofilament after drawing in drawing process
Middle employing aqueous vapor shielded, after drawing, monofilament meets the soft circular copper wire of TR type that GB/T 3953-2009 specifies and wants
Ask, for cross-sectional area of conductor 6mm2 and should also conform to GB/T 3956-2008 for the single line of conductor directly below
Specify the 1st kind of copper conductor requirement；
For needing stranded conductor, copper monofilament pitch as requested, direction of lay twist by pressing mould
Forming compacting pressing conductor after closing drawing, conductor filled coefficient has reached 88%, and the gap between monofilament is reduced, and leads
The smooth rounding in surface, conductor meet GB/T 3956-2008 regulation the 2nd kind press copper conductor want
Ask；
(2) aluminium alloy conductor production procedure: continuous casting and rolling → aluminum alloy drawing, annealing → roll-forming →
Conductor heat treatment；
Aluminium ingot and alloying component form the aluminum bar of φ 9.5mm after melted insulation through continuous casting and rolling operation, by aluminum
Bar is drawn into the aluminium monofilament in regulation line footpath by aluminum big drawing machine and aluminum Medium drawing mach ine, for cross-sectional area of conductor 6mm2And with
Under be directly used in the aluminium alloy monofilament of conductor and also need to make annealing treatment in drawing process；
For needing stranded conductor, use advanced roll-forming technology that monofilament is pressed into the shape of requirement
" splicing " by mould is complete conductor, and activity coefficient is to more than 93%, and conductive surface is substantially seamless
Gap；
Harden due to conductor after roll-forming, it is necessary to conductor is carried out bulk heat treatmet, the monofilament after heat treatment
Tensile strength controls between 89Mpa～159Mpa, and the elongation at break of monofilament is not less than 10%；
Conductor should meet the shaped aluminum alloy conductor requirement that GB/T 3956-2008 specifies simultaneously；
(3) light cellular manufacture flow process: CG or CTG layer-twisted type structure: drawing optical fibers → optical fiber coating
→ optical fiber coloring → connection with fibre coating → optical fiber, reinforcement stranding → light unit sheath；
XG or XTG center tube structure: drawing optical fibers → optical fiber coating → optical fiber coloring → connection with fibre coating or steel
Pipe cladding → light unit sheath；
BG butterfly cable structure: drawing optical fibers → optical fiber coating → optical fiber coloring → light unit sheath；
Drawing optical fibers uses prefabricated rods to make optical fiber at high temperature furnace lira；Prefabricated rods by feed mechanism with certain
Speed is uniformly sent
In tubular heater, prefabricated rods tip is heated to viscosity during certain temperature, by own wt
Sagging attenuating forms fiber, single footpath by laser beam measuring line footpath instrument precision monitor and move to carry-over pinch rolls around
On reel；
Optical fiber coating and wire drawing are carried out the most simultaneously, and the material of coating is usually silicone resin or esters of acrylic acid
Material, the surface of optical fiber after coating protected, and mechanical performance and transmission performance have obtained the biggest
Improvement.
For the occasion needing optical fiber color to distinguish, it is necessary to optical fiber is carried out coloring treatment and to dyed layer UV
Solidification, prevents dyed layer when producing and bend during use, distorting from coming off；
Connection with fibre coating is for protecting the coat of optical fiber, and increases the intensity of optical fiber, and the plastic sleeve of optical fiber has pine set
Tightly overlapping two ways, the occasion for particular/special requirement can also be at optical fiber outer cladding stainless steel tube；
In layer-twisted type structure, generally use metal reinforcement (such as steel wire) or non-metal reinforcement member (such as glass
Glass fibrous reinforcements FRP and aramid fiber), the bending property of the light unit after stranding is improved, pull resistance
Can be increased exponentially, beneficially the production of later process and installing and using of finished product.
Light unit sheath generally uses the mode of extruding cover at optical fiber or become outside cable core, and restrictive coating is mainly used
In protecting light unit and increasing the pressure performance of light unit；Conventional sheath material have polrvinyl chloride, polyolefin and
Polyethylene.
(4) insulation production procedure: including: insulating exruded → crosslinking；
High accuracy extruding machine is utilized uniformly to be coated with after extrusion die is shaped after insulant is carried out extrusion molten
Outside conductor, insulating surface should be smooth, and the tangent plane of insulation should be without the most visible pore, insulation extrusion
During should use power frequency spark that insulation carries out defect inspection, only by surface quality, insulation thickness and
The insulated wire cores that spark checks could circulate and arrive cross-linking process step；
Insulated wire cores after producing is placed a period of time in the water of 90 DEG C-98 DEG C or in steam, in crosslinking
Under the effect of agent, molecule is converted into network structure by linear structure, and heat resistance is brought up to 90 DEG C by 70 DEG C,
Environment resistant cracking performance have also been obtained the biggest raising；Insulate after crosslinking and extend qualified rear stream by test heat
Turn；
(5) cabling procedure production procedure:
Structure needs according to cable, by electric power transfer unit, presumable smooth unit according to certain arrangement,
Certain pitch, certain direction of lay twist together a piece cable core of formation, in order to ensure cable core rounding,
Packing material can be added in cable core；Use band that cable core is tightened outside stranding, prevent cable core loose；
, block water occasion fire-retardant, fire-resistant at needs can select filling out of anti-flammability, fire resistance and water preventing ability as required
Fill and band；
(6) lock armo:
Armouring band send band pinch roller to deliver to special mould by lock armo equipment and is rolled into S type rounding
Around being wrapped on cable core or electric power transfer unit；Armouring tape can select high-strength aluminum alloy as required
Band, galvanized steel strip or stainless steel band；
(7) lettering:
Interlocking open armoring lettering can be carried out together with lock armo operation, it is also possible to using lettering as independent work
Sequence is carried out；Using ink lettering, lettering content includes " factory's name model specification rice mark ", and lettering is through getting wet
After cotton wiping 10 times gently the most clear and legible；
Sheathing and lettering:
As required, sheath material can use polrvinyl chloride, polyethylene, polyolefin or other satisfied use
The material required, sheath uniform close after extruding machine extrusion die molding is coated on armor；Sheath table
Face should be smooth, and tangent plane is without visible pore；Jacket surface lettering can use ink, coding and impressing etc.
Mode, lettering content should include " factory's name model specification rice mark ", and lettering is through cotton wiping 10 gently that get wet
After secondary the most clear and legible.
(8) factory testing:
Decay to physical dimension, electric power transfer unit conductor resistance, voltage-withstand test and optical fiber detects；
(9) packaging warehouse-in.
For those skilled in the art, under the premise without departing from the principles of the invention, also
Can make some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
In the present invention, cable changes the problem that original armored type cable bend is the best, special lock armo pair
The protection of cable has reached new height, it is ensured that armouring band edge will not with insulated contact, cable can safety
Exposed lay without the safety of personnel and equipment is impacted, also therefore insulation will not be produced cutting and damage
Wound, can save inner liner, further reduce external diameter and the weight of cable；The bending of lock armo structure
Function admirable, minimum bending radius is only 7 times of external diameter, is particularly well-suited to laying of narrow and small environment；Special
Different arch lock armo structure can also carry out good protection to photoelectromotive force transmission unit in armouring, according to
Our test: cable remains to holding under by the radial compression power of 9kN and powers, it is ensured that the electricity of cable
Gas security performance；Require and use the difference of environment according to flame-retardant, lock armo can be as required
Select high-strength aluminum alloy band, galvanized steel strip or stainless steel band.
Compared with aluminium cable, al alloy component special in the present invention improves fine aluminium conductor in energising power-off
Journey center tap is lax, spark phenomenon, improves the safety and reliability that cable uses.Aluminium alloy has sky
Right corrosion resistance, can be brought up to 40 years by 30 years service life.
Cable introduces optical fiber structure, can preferably be used as signal transmission or do pre-for follow-up upgrading
Stay, it is to avoid repeat excavation and secondary connects up, saved spending.
Cable of the present invention alleviates the weight of cable, reduces the manufacture of cable, transport and installation cost, permissible
Reduce the cable industry consumption to copper, save day by day exhausted copper resource, contribute for Sustainable type development.
The conductor of cable uses unique roll-forming technology, has activity coefficient high (more than 93%), and conductor diameter is little,
The feature that bending property is excellent, waits Special use environment lower conductor to use high-quality oxygen-free copper, commonly fire-resistant
Laying occasion uses me to take charge of the aluminium alloy conductor of independent research, and I takes charge of the aluminium alloy conductor of independent research has and lead
Electrical property excellent (conductivity is the 61.8% of international standard benchmark copper IACS), creep-resistant property is excellent and electric
The feature that gas connective stability is excellent, tests the experiment certification of structure: connecting copper-aluminium transition end by authority
The period of the day from 11 p.m. to 1 a.m, connection reliability more than 40 years.Simultaneously by the technique of the most first annealed after formation, conductor
Bending radius is splendid.
Optical fiber is for the unrivaled advantage of long range propagation of data: transmission capacity is big, long transmission distance,
Transmission quality will not be disturbed by electromagnetism.By both can be by power supply and network signal among optical fibre drop cables
Once access, it is to avoid repeat construction；Again can cable access point increase monitoring device monitor in real time cable and
The electric current of access device and temperature regime also utilize optical fiber quickly to pass back to realize intelligentized long-range control, it is ensured that
The safety of cable operation and economy.
The weight more existing steel-tape armouring copper cable weight of aluminium alloy conductor and aluminum alloy strip lock armo structural cable
Amount declines more than 40%, and relatively wire armoring copper cable weight declines more than 60%.Copper conductor and steel band interlocking armour
Assembling structure cable relatively steel-tape armouring copper cable weight decline more than 20%, relatively wire armoring copper cable decline 30% with
On.
In sum, the feature of summary is as follows:
1) minimum bending radius is only 7 times of the outside diameter of cable, the mounting and installation of the narrowest and small environment.
2) special arch lock armo structure, substantially increases the impact resistance of cable, through authority
The test of mechanism proves: cable remains to holding under by the radial compression power of 9KN and powers；Cable is special
It is not applicable to the exposed environment that lays without personnel and equipment are produced safely impact.
3) can complex light unit in the cable, can be not only used for signal transmission, it is also possible to for cable
The monitoring run.
4) under the conditions of using aluminium alloy conductor and aluminum alloy strip interlock, by using specific insulation
Just can be used for the bad environments occasions such as high salinity, open sun direct projection, high humidity with jacket material.
5) weight of cable is greatly reduced, as a example by aluminium alloy conductor aluminum alloy strip lock armo structure,
Compare with the metal tape armour copper cable of identical electric property, weight reduction more than 40%, with metal tape armour
Aluminium cable compares weight reduction more than 20%.
Promote cable of the present invention particularly aluminium alloy conductor structural cable and can save disappearing of limited copper resource
Consumption, contributes for sustainable development.
Claims (1)
1. a small-bend radius shock resistance light optical fibre power cable, it is characterised in that: include electric power transfer unit (1), twining package tape (4), aluminum
Close
Gold ribbon lock armo (5) and oversheath (6), be provided with some electric power transfer unit (1) in described twining package tape (4), twining package tape (4) depends on outward
Secondary
It is cased with aluminum alloy strip lock armo (5) and oversheath (6)；
Described electric power transfer unit (1) is by copper conductor or aluminium alloy conductor and crosslinked polyetylene insulated forms: wherein aluminium alloy conductor uses high connductivity
Rate and high creep resistant single line through roll-forming processing technique, the activity coefficient of conductor reaches more than 93%；
Described oversheath (6) uses polrvinyl chloride or polyethylene；
Also have fiber unit (3) and some gasket for packings (2) in described twining package tape (4), be filled with by gasket for packing (2)；
The number of described electric power transfer unit (1) is 1-5；
The technological process of described small-bend radius shock resistance light optical fibre power cable comprises the steps:
(1) copper conductor produces: and copper conductor up-drawing method is cold rolling → copper conductor Lian Lalian moves back → and copper conductor is stranded；
No-oxygen copper plate or copper ingot are put into after preheating and after smelting furnace melts, forms hard-packed hard copper bar through cold rolling process, so through up-drawing method pull-out
After this hard copper bar is drawn into by copper wire drawing machine the copper monofilament in regulation line footpath, by direct current contact, the copper monofilament after drawing is entered in drawing process
Row continuous annealing, uses aqueous vapor shielded in annealing process, after drawing, monofilament meets the TR type soft circular copper wire requirement that GB/T 3953-2009 specifies,
For cross-sectional area of conductor 6mm2And the single line being used for conductor directly below should also conform to the 1st kind of copper conductor requirement of GB/T 3956-2008 regulation；
For needing stranded conductor, copper monofilament pitch as requested, direction of lay by forming compacting pressing conductor after pressing the stranded drawing of mould,
Conductor filled coefficient reaches 88%, and the gap between monofilament is reduced, the smooth rounding of conductive surface, and conductor meets the 2nd kind of GB/T 3956-2008 regulation
Press the requirement of copper conductor；
(2) aluminium alloy conductor production procedure: continuous casting and rolling → aluminum alloy drawing, annealing → roll-forming → conductor heat treatment；
Aluminium ingot and alloying component form the aluminum bar of φ 9.5mm after melted insulation through continuous casting and rolling operation, by aluminum bar by aluminum big drawing machine and aluminum Medium drawing mach ine
It is drawn into the aluminium monofilament in regulation line footpath, for cross-sectional area of conductor 6mm2And the aluminium alloy monofilament being used for conductor directly below needs to carry out in drawing process
Annealing；
For needing stranded conductor, using roll-forming technology " to splice " through mould after monofilament is pressed into the shape of requirement is complete conductor,
Activity coefficient reaches more than 93%, the substantially seamless gap of conductive surface；
Harden due to conductor after roll-forming, it is necessary to conductor is carried out bulk heat treatmet, the monofilament tensile strength after heat treatment control at 89Mpa～
Between 159Mpa, the elongation at break of monofilament is not less than 10%；
Conductor should meet the shaped aluminum alloy conductor requirement that GB/T 3956-2008 specifies simultaneously；
(3) light cellular manufacture flow process:
CG or CTG layer-twisted type structure: drawing optical fibers → optical fiber coating → optical fiber coloring → connection with fibre coating → optical fiber, reinforcement stranding → light unit sheath；
XG or XTG center tube structure: drawing optical fibers → optical fiber coating → optical fiber coloring → connection with fibre coating or steel pipe cladding → light unit sheath；
BG butterfly cable structure: drawing optical fibers → optical fiber coating → optical fiber coloring → light unit sheath；
Drawing optical fibers uses prefabricated rods to make optical fiber at high temperature furnace lira；
Prefabricated rods is uniformly sent in tubular heater with certain speed by feed mechanism, and prefabricated rods tip is heated to viscosity during certain temperature,
Forming fiber by sagging the attenuating of own wt, single footpath is by laser beam measuring line footpath instrument precision monitor and moves carry-over pinch rolls on reel；
Optical fiber coating and wire drawing are carried out simultaneously, and the material of coating is silicone resin or acrylate materials, and the surface of the optical fiber after coating obtains
Protection；
For the occasion needing optical fiber color to distinguish, optical fiber carried out coloring treatment and dyed layer UV is solidified, preventing during producing and using
Under bending, distorting event, dyed layer comes off；
The plastic sleeve of optical fiber has pine set and tightly overlaps two ways, for the occasion of particular/special requirement at optical fiber outer cladding stainless steel tube；
In layer-twisted type structure, use metal reinforcement or non-metal reinforcement member；
Light unit sheath uses the mode that extrudes cover at optical fiber or become outside cable core；Conventional sheath material has polrvinyl chloride and polyethylene；
(4) insulation production procedure:
Including: insulating exruded → crosslinking；
Utilizing high accuracy extruding machine to be evenly coated at outside conductor after extrusion die is shaped after insulant is carried out extrusion molten, insulating surface should light
Sliding smooth, the tangent plane of insulation should should use power frequency spark that insulation is carried out defect inspection without the most visible pore, pass through surface during insulation extrusion
The insulated wire cores of quality, insulation thickness and spark inspection circulates cross-linking process step；
Insulated wire cores after producing is placed a period of time in the water of 90 DEG C-98 DEG C or in steam, and under the effect of cross-linking agent, molecule is tied by wire
Structure is converted into network structure, and heat resistance is brought up to 90 DEG C by 70 DEG C, and environment resistant cracking performance is greatly improved；
Insulate after crosslinking and extend qualified rear circulation by test heat；
(5) cabling procedure production procedure:
Structure needs according to cable, electric power transfer unit, light unit is stranded according to certain arrangement, certain pitch, certain direction of lay
Form a cable core together, in order to ensure cable core rounding, cable core adds packing material；
The outside of stranding uses band to tighten cable core, prevents cable core loose；
Needing filling and the band fire-retardant, fire-resistant, the occasion that blocks water selects anti-flammability, fire resistance and water preventing ability as required；
(6) lock armo:
Armouring band send band pinch roller to deliver to special mould by lock armo equipment and is rolled into S type rounding around being wrapped in cable core or electric power transfer unit；
Armouring tape selects high-strength aluminum alloy band, galvanized steel strip or stainless steel band as required；
(7) lettering:
Interlocking open armoring lettering is carried out together with lock armo operation, or is carried out as independent operation by lettering；
Using ink lettering, lettering content includes " factory's name model specification rice mark ", and lettering is the most clear after the cotton wiping 10 times gently that gets wet
Can distinguish；
Sheathing and lettering:
As required, sheath material uses polrvinyl chloride or polyethylene, and sheath uniform close after extruding machine extrusion die molding is coated on armor
On；Jacket surface should be smooth, and tangent plane is without visible pore；
Jacket surface lettering uses ink, coding and impressing mode, and lettering content includes " factory's name model specification rice mark ", and lettering is through the cotton that gets wet
The most clear and legible after wiping 10 times gently；
(8) factory testing:
Decay to physical dimension, electric power transfer unit conductor resistance, voltage-withstand test and optical fiber detects；
(9) packaging warehouse-in.
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| CN104658678A (en) * | 2015-03-18 | 2015-05-27 | 中天科技装备电缆有限公司 | Marine oil-proof low-voltage duplexing opto-electronic compound cable and preparation process thereof |
| CN104766666A (en) * | 2015-04-21 | 2015-07-08 | 河南胜华电缆集团有限公司 | Environmentally-friendly cable |
| CN110867279A (en) * | 2019-12-06 | 2020-03-06 | 绍兴电力设备有限公司 | Water-blocking square optical fiber composite bunched cable and preparation method thereof |
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Effective date of registration: 20231012 Address after: 226100 No.19, Xinkai South Road, Nantong Development Zone, Nantong City, Jiangsu Province Patentee after: ZHONGTIAN TECHNOLOGY INDUSTRIAL WIRE&CABLE SYSTEM Co.,Ltd. Patentee after: JIANGSU ZHONGTIAN TECHNOLOGY Co.,Ltd. Address before: No. 19 Xinkai South Road, Nantong Economic Development Zone, Jiangsu Province, 226000 Patentee before: ZHONGTIAN TECHNOLOGY INDUSTRIAL WIRE&CABLE SYSTEM Co.,Ltd. |