CN104575831B - A kind of aluminium alloy core intelligent environmental protection type power cable - Google Patents
A kind of aluminium alloy core intelligent environmental protection type power cable Download PDFInfo
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- CN104575831B CN104575831B CN201510041638.4A CN201510041638A CN104575831B CN 104575831 B CN104575831 B CN 104575831B CN 201510041638 A CN201510041638 A CN 201510041638A CN 104575831 B CN104575831 B CN 104575831B
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Abstract
A kind of aluminium alloy core intelligent environmental protection type power cable belongs to power cable technical field, particularly relates to a kind of aluminium alloy core intelligent environmental protection type power cable.The present invention provides a kind of actual motion temperature being easy to detection and display cable, it is simple to computer remote contact and the aluminium alloy core intelligent environmental protection type power cable controlled.The present invention is by three conductor wire cores, computer contact and control unit line, data transmission and temperature measuring unit line, low-smoke bittern-free highly fire-proof twining package tape, low-smoke bittern-free highly fire-proof extrude inner cushion layer, copper strips lapped shielding layer, low-smoke bittern-free highly fire-proof extrude separation sleeve, the chain armor of monolayer aluminum alloy strip and low-smoke bittern-free highly fire-proof and extrude oversheath and form, and the contact of three conductor wire cores of its structural feature, computer transmits with control unit line, data and temperature measuring unit line is arranged on inside low-smoke bittern-free highly fire-proof twining package tape.
Description
Technical field
The invention belongs to power cable technical field, particularly relate to a kind of aluminium alloy core intelligent environmental protection type power cable.
Background technology
In power system is built, long range propagation relies primarily on aerial cable, and the electric power transmission of mid portion is mainly
Complete by midium voltage cable；Therefore, it is big that medium-pressure power cable also has transmission capacity, carries the feature of half path length, and this is also the most right
The safe class of medium voltage power lines has had higher requirement.Owing to China's copper resource is less, relative bauxite resource is abundanter,
Therefore people the most just will recognize that with aluminum for copper, but finds in long-term actual application, due to the mechanical strength of fine aluminium
Low poor with pliability, in use there will be aluminum steel cracking, fracture, after life-time service, aluminum steel also can be brittle, is unfavorable for dimension
Repair.In terms of mounting process, use mechanical connection manual control widely different, it may appear that too tight or too loose after fastening, at pressure
Under effect, thrust originally is inadequate, and the pressure reduction of contact point makes contact resistance increase rapidly, and electric current causes after flowing through and connects
At Tou overheated, if nonperiodical repair, the accident such as open circuit, fire will be caused.
Owing to midium voltage cable transmission range is far, the long maintenance cost the most just increasing circuit of circuit, it is therefore desirable to right
This circuit has an on-line checking function and distant signal to control function, and this is extremely important for mains electricity safe transmission.
Way in the past is manually to patrol, and this way labor intensive intensity is big and efficiency is low, simultaneously because labor intensity is big, neglects
The biggest depending on the risk of, missing inspection.Medium-pressure power cable applicable situation is generally city electric power transmission, and land resource is in short supply and high
Expensive.Do not intervene mutually for being three-line parallel laying before electric power, signal control and communication line, i.e. built an electric power
Transfer passage, also to control circuit and the construction of communication line building two bars, the most not only waste land resource but also waste
Manpower and materials.Recent years is along with country is to telecommunications network, broadcasting network, the increasing of the Internet integration of three networks promotion efficiency, Intelligent electric
The construction of net is also in actively follow-up.There has been multiple provinces and cities promotion and application Optical Fiber Composite type intelligent electric power electricity in the whole nation at present
Cable, this cable is exactly when producing power cable, places fiber optic cables at cable core position, to realize the group of optical fiber and cable
Close, complete photoelectric unification with a piece cable, it is to avoid repeat wiring, cost-effective, selected optical fiber the most all be use B1 with
The single-mode fiber of B4 class.In the production of above-mentioned cable and installation process, owing to constantly bending and stretching, optical fiber can be caused to break
Or bending loss is excessive, affect the transmission of signal data, remote signal can not be completed and control, it is therefore desirable to traditional
Medium-pressure power cable carries out structure improvement and process innovation.
Summary of the invention
The present invention is aiming at the problems referred to above, it is provided that a kind of actual motion temperature being easy to detection and display cable, it is simple to
Computer remote contact and the aluminium alloy core intelligent environmental protection type power cable controlled.
For achieving the above object, the present invention adopts the following technical scheme that, the present invention is by three conductor wire cores, computer contact
Interior pad is extruded with control unit line, data transmission and temperature measuring unit line, low-smoke bittern-free highly fire-proof twining package tape, low-smoke bittern-free highly fire-proof
It is high that layer, copper strips lapped shielding layer, low-smoke bittern-free highly fire-proof extrude separation sleeve, the chain armor of monolayer aluminum alloy strip and low smoke and zero halogen
The fire-retardant oversheath composition that extrudes, the contact of three conductor wire cores of its structural feature, computer and control unit line, data transmission and survey
Temperature unit wires is arranged on inside low-smoke bittern-free highly fire-proof twining package tape, sets the most successively outside low-smoke bittern-free highly fire-proof twining package tape
Put described copper strips lapped shielding layer, low-smoke bittern-free highly fire-proof extrudes separation sleeve, the chain armor of monolayer aluminum alloy strip, low smoke and zero halogen
High fire-retardance extrudes oversheath；Every core of described three conductor wire cores is followed successively by from inside to outside and presses circular stranded aluminium alloy and lead
Body, cross-linking type semicrystalline polyolefin conduction internal shield, crosslinked polyetylene insulated layer, cross-linking type semiconductive polyolefine as external shielding layer.
As another kind of preferred version, conductor wire core of the present invention uses three layers of extrusion continuous vulcanization nitrogen protection simultaneously
Crosslinking process, concrete technology require as follows:
Extruding machine body temperature ± 5 DEG C
Head, lead sebific duct temperature ± 5 DEG C
Pipeline curing temperature ± 5 DEG C
Sulfide stress and nitrogen gas purity: sulfide stress: 1.0 1.2Mpa；Nitrogen gas purity: >=90%；Curing tube is necessary
Reliably seal, it is ensured that nitrogen pressure is stable.
Mould with go out linear velocity m/min
Insulation and shielded surfaces plastify good, pore-free, impurity, and smooth surface rounding, without disconnecting, is closely coated with, and external diameter is equal
Even unanimously；Section pore-free, sand holes and impurity defect.
Inner shield, insulation and external shield take plsitive mold disposably to extrude, and insulation is closely extruded on interior screen, and hold
It is easily peeled and not Damage to insulation body.Insulation thickness: the minimum measured value of insulation thickness is not less than the 90%-0.1mm of nominal value；Absolutely
The degree of eccentricity of the edge ratio of maximum (difference of thickness with) is not more than 0.08
As another kind of preferred version, of the present invention press circular stranded aluminium alloy conductor press stranded after, will become
The stranded conductor of dish is put in annealing pot, tightens the bolt of tank mouth, and the trachea of vacuum pump is received on the gas outlet of annealing tank body,
Open valve of giving vent to anger, start vacuum pump, start evacuation；As vacuum up to 75-Hg, close valve and the electricity of vacuum pump
Source switch, takes vacuum tube, and the annealing pot that then will be equipped with aluminium alloy conductor hangs in heating furnace, is slowly heated, annealing temperature
After reaching 440-480 DEG C, start timing and keep temperature, after annealing time to 4-6 hour, annealing pot being recalled heating furnace, slowly
Slow cool down is to room temperature；Open cover, hang out conductor；In work is carried out, vacuum is kept to be not less than 70cm-Hg.
As another kind of preferred version, of the present invention press the impacted process that circular stranded aluminium alloy conductor uses and be:
Conductor uses same diameter and stranded with core type, and center is 1, and the second layer is 6, and third layer is 12, and later every layer depends on
Secondary than the internal layer increase by 6 closed on, the direction of lay of outermost layer single line is left-hand, faces layer contrary, and outermost layer list cabling saves
Away from controlling within 12 times of conductor diameter, the twisting pitch of remaining each layer single line controls between 18-28 times, each layer receive
Meter He Jin presses the internal diameter of mould and selects the little 0.55-0.65mm of stranded external diameter than reality measurement, and each mould carries out drop
Ethanol lubrication and cooling, ethanol purity is not less than 95%, and stranded conductor does not carry out whole core welding, and single line welds, and any two connects
More than 0.5 meter between Tou.
As another kind of preferred version, of the present invention press circular stranded aluminium alloy conductor and use Nanoalloy mould,
Being provided with 45# steel round jacket outside mould, the front end of mould is the end of incoming cables that front port is more than rear port, and rear end, end of incoming cables is
Mold lubrication district and the first arc transition zone of working area, the rear end in line footpath, for holding line footpath, is held in the rear end of the first arc transition zone
For sizing area and the second arc transition zone of outlet area, the rear end of the second arc transition zone is the outlet that front port is more than rear port
End；The a length of 20mm of described end of incoming cables, a length of 10mm of leading-out terminal, a length of 40mm of mould, the rear port of leading-out terminal
A diameter of 20mm, the external diameter of mould is 30mm, and the external diameter of round jacket is 50mm.
As another kind of preferred version, of the present invention press circular stranded aluminium alloy conductor cross section, hold line electrical path length, strand
Conjunction pitch length, annealing temperature, the corresponding relation employing following table of annealing time:
As another kind of preferred version, of the present invention press circular stranded aluminium alloy conductor by Fe, Si, Cu, Be, RE,
Ce, La, Y, Al form, mass percent be Fe0.30-1.5, Si≤0.08, Cu0.005-0.30, Be0.001-0.30,
RE0.10-0.8, Ce0.02-0.026, La0.016-0.02, Y0.014-0.019, surplus is Al.
As another kind of preferred version, computer of the present invention contact includes low-smoke bittern-free highly fire-proof with control unit line
Extruding inner cushion layer, low-smoke bittern-free highly fire-proof extrudes and is provided with six pairs of computer contacts and control unit core inside inner cushion layer, often
Computer contact and control unit core are included a computer contact core and a control unit core, and computer is got in touch with
Core and control unit core all use outside to wrap up the soft copper conductor of crosslinked polyetylene insulated layer, computer contact core and control
The outside parcel strand of unit core processed is to twining package tape, and strand is to being disposed with low-smoke bittern-free highly fire-proof outside twining package tape from the inside to the outside
Extrude inner cushion layer, proof copper-wire braided always shields, copper moulds the wrapped total shielding of band, low-smoke bittern-free highly fire-proof extrudes outer jacket；Described often
It is 1.5mm to computer contact and control unit core sectional area2And time following, maximum twisting pitch is 80-100mm；2.5mm2
And time above, maximum twisting pitch should be 100-120mm；Star quad stranding pitch is 120-150mm, and adjacent computers contact is single with control
Unit's core uses different twisting pitch.
Secondly, low-smoke bittern-free highly fire-proof of the present invention extrudes the right of the external diameter shielding thickness total with proof copper-wire braided of inner cushion layer
Should be related to such as following table:
It addition, data of the present invention transmission and temperature measuring unit line include PBT Loose tube, it is provided with many in PBT Loose tube
Root UV curing optical fiber, is filled with fiber filling gel, is disposed with from the inside to the outside outside PBT Loose tube between UV curing optical fiber
Phosphating steel wire armouring, halogen-free flameproof band, low smoke halogen-free flame-retardant polyolefin oversheath, be filled with between the gap of phosphating steel wire armouring
Factice for filling cables；Described UV curing optical fiber uses the A type optical fiber of B6 apoplexy due to endogenous wind.
Beneficial effect of the present invention.
The present invention collects electric power transmission, temperature measurement on-line and temperature control, online fault location, the online fault location of shelf depreciation, load
The contact of online discharge monitoring, cable jacket state analysis, computer remote, long-range control etc. are multi-functional in one, not only may be used
With detection and the actual motion temperature of display cable, the automatic storage history data of intelligence, consult the operation of cable at any time
Temperature, it is also possible to realize automatic overtemperature alarm and online feedback controls, cable can be made to carry electric energy to greatest extent, again can be true
Protect the safe operation of cable, the most also can realize the operations such as computer remote contact and control.
The present invention uses split-phase shielding copper strips and the two-layer compound shielding construction of copper strips lapped shielding layer, strengthens the anti-of cable
Interference effect.
The present invention arranges the chain armor of monolayer aluminum alloy strip, its chain occlusion structure between layers, it is ensured that cable
Being amenable to extraneous strong destructive power, even if cable suffers bigger pressure and impulsive force, cable is also difficult to breakdown, improves
The security function of cable；And chain armouring structure makes cable intercept with extraneous, even if when fire, armor improves electricity
The flame-retardant grade of cable, reduces the danger coefficient of fire.
It addition, the present invention uses low-smoke bittern-free highly fire-proof twining package tape, low-smoke bittern-free highly fire-proof to extrude inner cushion layer, low smoke and zero halogen
High fire-retardance extrudes separation sleeve, low-smoke bittern-free highly fire-proof extrudes oversheath；Flame retardant effect is more preferable, environment friendly and pollution-free.
Accompanying drawing explanation
The present invention will be further described with detailed description of the invention below in conjunction with the accompanying drawings.Scope not only limits to
Statement in herein below.
Fig. 1 is this invention structural representation.
Fig. 2 is computer of the present invention contact and control unit line structure schematic diagram.
Fig. 3 is fibre optic data transmission of the present invention and temperature measuring unit line structure schematic diagram.
Fig. 4 is Nanoalloy mould structure schematic diagram of the present invention.
In FIG, 1-circle presses aluminium alloy stranded conductor；2-cross-linking type semicrystalline polyolefin conduction internal shield；3-cross-links
Polyethylene layer；4-cross-linking type semiconductive polyolefine as external shielding layer；5-low smoke halogen-free flame-retardant polyolefin packing；6-split-phase screen
Cover copper strips；7-low-smoke bittern-free highly fire-proof twining package tape；8-low-smoke bittern-free highly fire-proof polyolefin inner cushion layer；9-copper strips lapped shielding layer；
10-low-smoke bittern-free highly fire-proof extrudes separation sleeve；The chain armor of 11-monolayer aluminum alloy strip；Outside 12-low-smoke bittern-free highly fire-proof extrudes
Sheath；13-fibre optic data transmission and temperature measuring unit line；The contact of 14-computer and control unit line.
In fig. 2,2-1--soft copper conductor；The crosslinked polyetylene insulated layer of 2-2--；2-3--twists twining package tape；2-4 pair twist
Shielding layer of copper wires；2-5--PP gasket for packing；2-6--low-smoke bittern-free highly fire-proof extrudes inner cushion layer；2-7--proof copper-wire braided always shields；2-
8--copper moulds the wrapped total shielding of band；2-9--low-smoke bittern-free highly fire-proof extrudes outer jacket.
In figure 3,3-1--UV curing optical fiber；3-2--fiber filling gel；3-3-PBT Loose tube；3-4--cable filling
Ointment；3-5--phosphating steel wire armouring；3-6--halogen-free flameproof band；3-7--low smoke halogen-free flame-retardant polyolefin oversheath.
In the diagram, A-is 45# steel round jacket；B-is Nanoalloy mould；Φ D0-is end of incoming cables front port internal diameter；L-
Line electrical path length is held for mould；Φ D-is the diameter of stranded conductor；R-is the excessive radius in mold lubrication district and working area；R-is fixed
Footpath district and the excessive radius of outlet area.
Detailed description of the invention
As it can be seen, the present invention is by three conductor wire cores, computer contact and control unit line, data transmission and thermometric list
Unit's line, low-smoke bittern-free highly fire-proof twining package tape, low-smoke bittern-free highly fire-proof extrude inner cushion layer, copper strips lapped shielding layer, low smoke and zero halogen height
Fire-retardant separation sleeve, the chain armor of monolayer aluminum alloy strip and the low-smoke bittern-free highly fire-proof of extruding extrudes oversheath composition, and its structure is wanted
Three conductor wire cores of point, computer contact are arranged on low-smoke bittern-free highly with control unit line, data transmission and temperature measuring unit line
Inside combustion twining package tape, outside low-smoke bittern-free highly fire-proof twining package tape, set gradually described copper strips lapped shielding layer, low cigarette from the inside to the outside
Halogen-free high flame-retardant extrudes separation sleeve, the chain armor of monolayer aluminum alloy strip, low-smoke bittern-free highly fire-proof extrude oversheath；Described three
Every core of conductor wire core is followed successively by from inside to outside and presses screen in circular stranded aluminium alloy conductor, cross-linking type semicrystalline polyolefin conduction
Cover layer, crosslinked polyetylene insulated layer, cross-linking type semiconductive polyolefine as external shielding layer.
Described press circular stranded aluminium alloy conductor press stranded after, the stranded conductor of one-tenth dish is put in annealing pot,
Tighten the bolt of tank mouth, the trachea of vacuum pump received on the gas outlet of annealing tank body, opens valve of giving vent to anger, start vacuum pump,
Start evacuation；As vacuum up to 75-Hg, close valve and the on and off switch of vacuum pump, take vacuum tube, then will
Annealing pot equipped with aluminium alloy conductor hangs in heating furnace, is slowly heated, and after annealing temperature reaches 440-480 DEG C, starts timing
And keep temperature, after annealing time to 4-6 hour, annealing pot is recalled heating furnace, be slowly cooled to room temperature；Open cover, hang
Go out conductor；In work is carried out, vacuum is kept to be not less than 70cm-Hg.Above-mentioned technique, conductor creep resistant function is used to bring up to
More than 130MPa, it is to avoid because the absent-mindedness problem that cold flow or creep cause；Elongation percentage also brings up to 30%, uses safer
Reliably.
Described press the impacted process that circular stranded aluminium alloy conductor uses and be: conductor uses same diameter and same core type
Stranded, center is 1, and the second layer is 6, and third layer is 12, and later every layer increases by 6 than the internal layer closed on successively, outermost
The direction of lay of layer single line is left-hand, faces layer contrary, and the twisting pitch of outermost layer single line controls within 12 times of conductor diameter,
The twisting pitch of remaining each layer single line controls between 18-28 times, and the Nanoalloy of each layer presses the internal diameter of mould and selects ratio
The actual little 0.55-0.65mm of stranded external diameter measured, each mould carries out ethanol lubrication and the cooling of drop, and ethanol purity is the lowest
In 95%, stranded conductor does not carry out whole core welding, and single line welds, more than 0.5 meter between any two joint.Use above-mentioned pressing
Technique makes round wire press coefficient and arrives 0.93, the pressing coefficient and can arrive 0.95 of special-shaped wire, and the pressing of ordinary copper, aluminium conductor
Coefficient can only achieve 0.9.Press through maximum, it is possible to make up aluminium alloy shortage on bulk conductivity, make stranded
Conductor thread core such as solid conductor, stranded core external diameter is remarkably decreased, and enhances conducting function, conductor in the case of equal current-carrying capacity
External diameter is only than copper cable big 10%.
Described press circular stranded aluminium alloy conductor use Nanoalloy mould, be provided with outside mould outside 45# steel circle
Set, the front end of mould is the end of incoming cables that front port is more than rear port, and rear end, end of incoming cables is the first of mold lubrication district and working area
Arc transition zone, second arc that rear end is sizing area and outlet area in line footpath, for holding line footpath, is held in the rear end of the first arc transition zone
Shape transition zone, the rear end of the second arc transition zone is the leading-out terminal that front port is more than rear port；Described end of incoming cables a length of
20mm, a length of 10mm of leading-out terminal, a length of 40mm of mould, a diameter of 20mm of the rear port of leading-out terminal, outside mould
Footpath is 30mm, and the external diameter of round jacket is 50mm.Excessive radius at two must assure that round and smooth excessively, it is ensured that line is smooth and easy,
Resistance is minimum.Overcoat A uses 45# steel overcoat, reduces the manufacturing cost of mould, and interior mould B uses Nanoalloy material, improves
In the mold use life-span, the surface also making conductor is more smooth, impulse-free robustness；Interior mould B is inlayed by taper fit with overcoat A
Together, length L of mould sizing area is to ensure that the key of conductive surface quality and die life, through test of many times,
Finally determine this this product optimum length.
Described press circular stranded aluminium alloy conductor cross section, hold line electrical path length, twisting pitch length, annealing temperature, annealing
The corresponding relation of time uses following table.
Described press circular stranded aluminium alloy conductor and be made up of Fe, Si, Cu, Be, RE, Ce, La, Y, Al, mass percent
For Fe0.30-1.5, Si≤0.08, Cu0.005-0.30, Be0.001-0.30, RE0.10-0.8, Ce0.02-0.026,
La0.016-0.02, Y0.014-0.019, surplus is Al.Following table is that the performance using this component aluminium alloy conductor tests data.
As seen from the above table, improving the tensile strength of fine aluminium, aluminium alloy cable can support the deadweight of 4000 meters of length, copper electricity
Cable can only support 2750 meters.This advantage embodies the most outstanding in large span when building distribution.
Add Ce0.02-0.026, La0.016-0.02, Y0.014-0.019 and can improve the corrosion-resistant of aluminium alloy further
Function, particularly electrochemical corrosion so that the anticorrosive function of aluminium alloy is significantly better than fine aluminium and copper, the most just extends aluminium alloy
The service life of cable.
With control unit line, the contact of described computer includes that low-smoke bittern-free highly fire-proof extrudes inner cushion layer, low-smoke bittern-free highly fire-proof
Extrude and inside inner cushion layer, be provided with six pairs of computer contacts and control unit core, every pair of computer contact and control unit core
Including a computer contact core and a control unit core, outside computer contact core and control unit core all use
The soft copper conductor of crosslinked polyetylene insulated layer is wrapped up in side, the outside parcel strand opposing connection of computer contact core and control unit core
Band, twist being disposed with outside twining package tape that low-smoke bittern-free highly fire-proof extrudes inner cushion layer, proof copper-wire braided always shields from the inside to the outside,
Copper moulds the wrapped total shielding of band, low-smoke bittern-free highly fire-proof extrudes outer jacket；Described every pair of computer contact and control unit core
Sectional area is 1.5mm2And time following, maximum twisting pitch is 80-100mm；2.5mm2And time above, maximum twisting pitch should be
100-120mm；Star quad stranding pitch is 120-150mm, and adjacent computers contact uses different twisting pitch from control unit core.Adopt
Correlated performance test data such as following table with above computer contact with control unit line.
The corresponding relation of the external diameter shielding thickness total with proof copper-wire braided that described low-smoke bittern-free highly fire-proof extrudes inner cushion layer is as follows
Table:
The transmission of described data and temperature measuring unit line include PBT Loose tube, be provided with many UV and solidify light in PBT Loose tube
Fibre, is filled with fiber filling gel between UV curing optical fiber, be disposed with phosphating steel wire armour outside PBT Loose tube from the inside to the outside
Dress, halogen-free flameproof band, low smoke halogen-free flame-retardant polyolefin oversheath, be filled with cable filling oil between the gap of phosphating steel wire armouring
Cream；Described UV curing optical fiber uses the A type optical fiber of B6 apoplexy due to endogenous wind.The A type optical fiber of B6 apoplexy due to endogenous wind is applicable to 0, E, S, C and L-band
(1260nm-1625nm), meet whole transmission characteristics of B1 type optical fiber, and in macrobending loss parameter, be better than B1 class and B4 class
Optical fiber, bending radius can take less value, and laser propagation effect is more preferably.
It is understood that above with respect to the specific descriptions of the present invention, be merely to illustrate the present invention and be not limited to this
Technical scheme described by inventive embodiments, it will be understood by those within the art that, still can carry out the present invention
Amendment or equivalent, to reach identical technique effect；As long as meet use needs, all protection scope of the present invention it
In.
Claims (9)
1. an aluminium alloy core intelligent environmental protection type power cable, by three conductor wire cores, computer contact and control unit line, number
According to transmission and temperature measuring unit line, low-smoke bittern-free highly fire-proof twining package tape, low-smoke bittern-free highly fire-proof polyolefin inner cushion layer, the wrapped screen of copper strips
Cover layer, low-smoke bittern-free highly fire-proof extrudes separation sleeve, the chain armor of monolayer aluminum alloy strip and low-smoke bittern-free highly fire-proof extrude outer protecting
Set composition, it is characterised in that three conductor wire cores, computer contacts are arranged with control unit line, data transmission and temperature measuring unit line
Inside low-smoke bittern-free highly fire-proof twining package tape, set gradually from the inside to the outside outside low-smoke bittern-free highly fire-proof twining package tape described copper strips around
Outside bag screen layer, low-smoke bittern-free highly fire-proof extrude separation sleeve, the chain armor of monolayer aluminum alloy strip, low-smoke bittern-free highly fire-proof extrude
Sheath；Every core of described three conductor wire cores be followed successively by from inside to outside press circular stranded aluminium alloy conductor, cross-linking type gather
Alkene semiconductive internal shield, crosslinked polyetylene insulated layer, cross-linking type semiconductive polyolefine as external shielding layer；
Described conductor wire core uses the crosslinking process of three layers of extrusion continuous vulcanization nitrogen protection simultaneously, and concrete technology requires as follows:
Extruding machine body temperature ± 5 DEG C
Head, lead sebific duct temperature ± 5 DEG C
Pipeline curing temperature ± 5 DEG C
Sulfide stress and nitrogen gas purity: sulfide stress: 1.0 1.2Mpa；Nitrogen gas purity: >=90%；Curing tube must be reliable
Seal, it is ensured that nitrogen pressure is stable；
Mould with go out linear velocity m/min
Crosslinked polyetylene insulated layer, cross-linking type semicrystalline polyolefin conduction internal shield, cross-linking type semiconductive polyolefine as external shielding layer table
Dough modelization is good, pore-free, impurity, and smooth surface rounding, without disconnecting, is closely coated with, and uniform external diameter is consistent；Section pore-free, sand
Eye and impurity defect；
Cross-linking type semicrystalline polyolefin conduction internal shield, crosslinked polyetylene insulated layer and cross-linking type semiconductive polyolefine as external shielding layer are adopted
Taking plsitive mold disposably to extrude, crosslinked polyetylene insulated layer is closely extruded in cross-linking type semicrystalline polyolefin conduction internal shield
On, and be easily peeled off and do not damage crosslinked polyetylene insulated body；
Crosslinked polyetylene insulated layer thickness: the minimum measured value of crosslinked polyetylene insulated layer thickness is not less than the 90%-of nominal value
0.1mm；The degree of eccentricity of crosslinked polyetylene insulated layer is not more than 0.08, the ratio of the degree of eccentricity i.e. difference of thickness and maximum.
A kind of aluminium alloy core intelligent environmental protection type power cable, it is characterised in that described in press circle
Stranded aluminium alloy conductor press stranded after, the stranded conductor of one-tenth dish is put in annealing pot, tightens the bolt of tank mouth, vacuum
The trachea of pump is received on the gas outlet of annealing tank body, opens valve of giving vent to anger, and starts vacuum pump, starts evacuation；When vacuum reaches
During to 75-Hg, close valve and the on and off switch of vacuum pump, take the trachea of vacuum pump, then will be equipped with aluminium alloy conductor
Annealing pot hang in heating furnace, be slowly heated, after annealing temperature reaches 440-480 DEG C, start timing and also keep temperature, annealing
After time to 4-6 hour, annealing pot is recalled heating furnace, be slowly cooled to room temperature；Open cover, hang out conductor；Work into
In row, vacuum is kept to be not less than 70cm-Hg.
A kind of aluminium alloy core intelligent environmental protection type power cable, it is characterised in that described in press circle
The impacted process that stranded aluminium alloy conductor uses is: conductor uses same diameter and stranded with core type, and center is 1, second
Layer is 6, and third layer is 12, and later every layer increases by 6 than the internal layer closed on successively, and the direction of lay of outermost layer single line is left
To, facing layer contrary, the twisting pitch of outermost layer single line controls within 12 times of conductor diameter, and remaining each layer list cabling saves
Away from controlling between 18-28 times, the internal diameter of the Nanoalloy mould that each layer presses selects the stranded external diameter than reality is measured little
0.55-0.65mm, each mould carries out ethanol lubrication and the cooling of drop, and ethanol purity is not less than 95%, and stranded conductor does not enters
Row whole core welding, carries out single line welding, more than 0.5 meter between any two joint.
A kind of aluminium alloy core intelligent environmental protection type power cable, it is characterised in that described in press circle
Stranded aluminium alloy conductor uses Nanoalloy mould, is provided with 45# steel round jacket outside mould, and the front end of mould is front port
More than the end of incoming cables of rear port, rear end, end of incoming cables is the first arc transition zone in mold lubrication district and working area, the first arc mistake
The second arc transition zone that rear end is sizing area and outlet area in line footpath, for holding line footpath, is held in the rear end in degree district, and the second arc is excessive
The rear end in district is the leading-out terminal that front port is more than rear port；The a length of 20mm of described end of incoming cables, a length of 10mm of leading-out terminal,
The a length of 40mm of mould, a diameter of 20mm of the rear port of leading-out terminal, the external diameter of mould is 30mm, and the external diameter of round jacket is
50mm。
A kind of aluminium alloy core intelligent environmental protection type power cable, it is characterised in that described in press circle
Stranded aluminium alloy conductor cross section, hold line electrical path length, twisting pitch length, annealing temperature, annealing time corresponding relation use under
Table:
。
A kind of aluminium alloy core intelligent environmental protection type power cable, it is characterised in that described in press circle
Stranded aluminium alloy conductor is made up of Fe, Si, Cu, Be, RE, Ce, La, Y, Al, mass percent be Fe 0.30-1.5, Si≤
0.08、Cu 0.005-0.30、Be 0.001-0.30、RE 0.10-0.8、Ce 0.02-0.026、La 0.016-0.02、Y
0.014-0.019, surplus is Al.
A kind of aluminium alloy core intelligent environmental protection type power cable, it is characterised in that described computer joins
Network and control unit line include that low-smoke bittern-free highly fire-proof extrudes inner cushion layer, and low-smoke bittern-free highly fire-proof extrudes and is provided with inside inner cushion layer
Six pairs of computer contacts and control unit core, every pair of computer contact includes a computer interconnection with control unit core
Core and a control unit core, computer contact core and control unit core all use outside parcel crosslinked polyetylene insulated
The soft copper conductor of layer, the outside parcel strand of computer contact core and control unit core, to twining package tape, is twisted outside to twining package tape
Be disposed with that low-smoke bittern-free highly fire-proof extrudes inner cushion layer, proof copper-wire braided always shields from the inside to the outside, copper moulds the wrapped total shielding of band,
Low-smoke bittern-free highly fire-proof extrudes outer jacket；Described every pair of computer contact is 1.5mm with control unit core sectional area2And below
Time, maximum twisting pitch is 80-100mm；Described every pair of computer contact is 2.5mm with control unit core sectional area2And with
Time upper, maximum twisting pitch should be 100-120mm；Star quad stranding pitch is 120-150mm, adjacent computers contact and control unit line
Core uses different twisting pitch.
A kind of aluminium alloy core intelligent environmental protection type power cable, it is characterised in that described low smoke and zero halogen
High fire-retardance extrudes the external diameter of inner cushion layer and the corresponding relation such as following table of the total shielding thickness of proof copper-wire braided:
。
A kind of aluminium alloy core intelligent environmental protection type power cable, it is characterised in that described data are transmitted
Include PBT Loose tube with temperature measuring unit line, in PBT Loose tube, be provided with many UV curing optical fibers, fill between UV curing optical fiber
There is fiber filling gel, outside PBT Loose tube, be disposed with phosphating steel wire armouring, halogen-free flameproof band, low cigarette from the inside to the outside
Halogen-free anti-flaming polyolefin oversheath, is filled with factice for filling cables between the gap of phosphating steel wire armouring；Described UV curing optical fiber is adopted
With the A type optical fiber of B6 apoplexy due to endogenous wind.
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| CN105273283A (en) * | 2015-11-13 | 2016-01-27 | 浙江一舟电子科技股份有限公司 | Elevator cable |
| CN105976935A (en) * | 2016-03-29 | 2016-09-28 | 中冠电缆有限公司 | Intelligent cable for intelligent grid construction |
| CN106024188A (en) * | 2016-07-06 | 2016-10-12 | 远东电缆有限公司 | Self-support type building hoisting intelligent medium-voltage power cable and manufacturing method thereof |
| CN111210942A (en) * | 2019-09-03 | 2020-05-29 | 浙江万马股份有限公司 | Flexible direct current cable with cooling function |
| CN116646125B (en) * | 2023-07-25 | 2023-10-03 | 江阴市源达电工材料有限公司 | Aluminum conductor high-voltage shielding cable |
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| GB1322905A (en) * | 1968-10-18 | 1973-07-11 | Pyrotenax Ltd | Electric cables |
| CN103646714A (en) * | 2013-11-29 | 2014-03-19 | 四川鑫电电缆有限公司 | A medium-voltage fiber composite cable |
| CN203617014U (en) * | 2013-12-11 | 2014-05-28 | 中利科技集团（辽宁）有限公司 | Medium-voltage transmission control composite cable for stadium |
| CN203839095U (en) * | 2014-04-14 | 2014-09-17 | 江苏宏图高科技股份有限公司 | Light underwater photoelectric composite cable |
| CN204117662U (en) * | 2014-09-09 | 2015-01-21 | 沈阳长城电缆实业有限公司 | A kind of multi-functional composite medium-pressure power cable |
| CN204348409U (en) * | 2015-01-28 | 2015-05-20 | 沈阳长城电缆实业有限公司 | A kind of aluminium alloy core intelligent environmental protection type power cable |
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