CN104575831A - Intelligent and environment-friendly type power cable with aluminum alloy cores - Google Patents
Intelligent and environment-friendly type power cable with aluminum alloy cores Download PDFInfo
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- CN104575831A CN104575831A CN201510041638.4A CN201510041638A CN104575831A CN 104575831 A CN104575831 A CN 104575831A CN 201510041638 A CN201510041638 A CN 201510041638A CN 104575831 A CN104575831 A CN 104575831A
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Abstract
The invention belongs to the technical field of power cables and particularly relates to an intelligent and environment-friendly type power cable with aluminum alloy cores. The power cable facilitates detection and display of actual operating temperature of the power cable and facilitates computer remote contact and control. The power cable is composed of the three conductive wire cores, a computer contact and control unit line, a data transmission and temperature measurement line, a low-smoke, zero-halogen and high-flame-resistance lapping tape, a low-smoke, zero-halogen and high-flame-resistance extruded inner pad layer, a copper belt lapping shielding layer, a low-smoke, zero-halogen and high-flame-resistance extruded isolation sleeve, a single-layer aluminum alloy belt interlocking armor layer and a low-smoke, zero-halogen and high-flame-resistance extruded outer sheath. The power cable is structurally characterized in that the three conductive wire cores, the computer contact and control unit line and the data transmission and temperature measurement line are arranged on the inner side of the low-smoke, zero-halogen and high-flame-resistance lapping 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 electric power system is built, long range propagation mainly relies on aerial cable, and the electric power transfer of mid portion has mainly been come by midium voltage cable; Therefore, it is large that medium-pressure power cable also has transmission capacity, and carry the feature of half path length, this has also just had higher requirement to the safe class of medium voltage power lines.Because China's copper resource is less, relative bauxite resource is abundanter, therefore people will expect with aluminium for copper very naturally, but find in long-term practical application, mechanical strength due to fine aluminium is low and pliability is poor, in use there will be aluminum steel cracking, fracture, after Long-Time Service, aluminum steel also can be brittle, is unfavorable for maintenance.In mounting process, use mechanical connection manual control widely different, there will be fastening rear too tight or too loose, under pressure, thrust is originally inadequate, and the pressure of contact point reduces contact resistance is increased rapidly, causes joint overheated after electric current flows through, if nonperiodical repair, the accident such as open circuit, fire will be caused.
Because midium voltage cable transmission range is far, the long maintenance cost also just increasing circuit of circuit, therefore need have an on-line checkingi function and distant signal controlling functions to this circuit, this is extremely important for mains electricity safe transmission.Way is in the past that this way labor intensive intensity is large and efficiency is low by artificial inspection, simultaneously because labour intensity is large, ignores, undetected risk is also very large.Medium-pressure power cable applicable situation is generally city electric power transfer, and land resource is in short supply and expensive.For being three-line parallel laying before electric power, signal controlling and communication line but nonintervention mutually, namely a power transfer corridors has been built, also in the construction of construction two bars control circuit and communication line, so not only to waste land resource but also wasting manpower and material resources.Recent years, the construction of intelligent grid was also in positive follow-up along with country is to the increasing of telecommunications network, radio network, the Internet integration of three networks promotion efficiency.There has been multiple provinces and cities promotion and application optical fiber combined intelligent power cable in the current whole nation, this cable is exactly when producing power cable, fiber optic cables are placed at cable core position, to realize the combination of optical fiber and cable, photoelectric unification is completed with a cable, avoid repeating wiring, cost-saving, selected optical fiber is also all the monomode fiber adopting B1 and B4 class.In the production of above-mentioned cable and installation process, due to constantly bending and stretch, optical fiber can be caused to break or bending loss excessive, affect the transmission of signal data, remote signal controlling can not be completed, therefore need to carry out architecture advances and process innovation to traditional medium-pressure power cable.
Summary of the invention
The present invention is exactly for the problems referred to above, provides a kind of actual motion temperature being convenient to detect and show cable, the aluminium alloy core intelligent environmental protection type power cable be convenient to computer remote contact and controlled.
For achieving the above object, the present invention adopts following technical scheme, the present invention is by three conductor wire cores, computer contact and control unit line, transfer of data and temperature measuring unit line, low-smoke bittern-free highly fire-proof twining package tape, low-smoke bittern-free highly fire-proof extrudes inner cushion layer, copper strips lapped shielding layer, low-smoke bittern-free highly fire-proof extrudes separation sleeve, the chain armour of individual layer aluminum alloy strip and low-smoke bittern-free highly fire-proof extrude oversheath composition, its structural feature three conductor wire cores, computer contact and control unit line, transfer of data and temperature measuring unit line are arranged on inside low-smoke bittern-free highly fire-proof twining package tape, described copper strips lapped shielding layer is set gradually from the inside to the outside outside low-smoke bittern-free highly fire-proof twining package tape, low-smoke bittern-free highly fire-proof extrudes separation sleeve, the chain armour of individual layer aluminum alloy strip, low-smoke bittern-free highly fire-proof extrudes oversheath, every root core of described three conductor wire cores is followed successively by from inside to outside and presses circular stranded aluminium alloy conductor, 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 adopts three layers of crosslinking process simultaneously extruding continuous vulcanization nitrogen protection, and concrete technology requires as follows:
Plastic 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%; The necessary positiver sealing of curing tube, guarantees that nitrogen pressure is stablized.
Mould with go out linear velocity m/min
Insulation and shielded surfaces plastify good, pore-free, impurity, and smooth surface rounding is without disconnection, and closely coated, uniform external diameter is consistent; Section pore-free, sand holes and impurity defect.
Inner shield, insulation and external shield take that plsitive mold is disposable to be extruded, and insulation is closely extruded on interior screen, and easily peel off 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; The degree of eccentricity (difference of thickness and the ratio of maximum) of insulation 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, the stranded conductor of one-tenth dish is put into annealing pot, tighten the bolt of tank mouth, the tracheae of vacuum pump is received on the gas outlet of annealing tank body, open valve of giving vent to anger, start vacuum pump, start to vacuumize; When vacuum degree reaches to 75 ㎝-Hg, the mains switch of valve-off and vacuum pump, take vacuum tube, then the annealing pot that aluminium alloy conductor is housed is hung in heating furnace, slowly heat, after annealing temperature reaches 440-480 DEG C, start timing and keep temperature, annealing pot, to after 4-6 hour, is recalled heating furnace, slowly cool to room temperature by annealing time; Open cover, hang out conductor; In work is carried out, vacuum degree is kept to be not less than 70cm-Hg.
As another kind of preferred version, of the present inventionly press the impacted process that circular stranded aluminium alloy conductor adopts and be: conductor adopts same diameter and stranded with core type, center is 1, the second layer is 6, third layer is 12, every layer increases by 6 than the internal layer closed on successively later, the direction of lay of outermost layer single line is left-hand, face layer contrary, the twisting pitch of outermost layer single line controls within 12 times of conductor diameter, the twisting pitch of all the other each layer single lines controls between 18-28 times, the Nanoalloy of every one deck presses the little 0.55-0.65mm of stranded external diameter of the internal diameter Selection radio actual measurement of mould, each mould carries out alcohol lubrication and the cooling of drop, alcohol purity is not less than 95%, stranded conductor does not carry out whole core welding, single line welds, 0.5 meter is greater than between any two joints.
As another kind of preferred version, of the present inventionly press circular stranded aluminium alloy conductor and adopt Nanoalloy mould, mould arranged outside has 45# steel round jacket, the front end of mould is the end of incoming cables that front port is greater than rear port, rear end, end of incoming cables is the first arc transition zone of mold lubrication district and service area, the rear end of the first arc transition zone is for holding wire diameter, the rear end of holding wire diameter is the second arc transition zone of sizing area and outlet area, and the rear end of the second arc transition zone is the leading-out terminal that front port is greater than rear port; The length of described end of incoming cables is 20mm, and the length of leading-out terminal is 10mm, and the length of mould is 40mm, and the diameter of the rear port of leading-out terminal is 20mm, and 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 inventionly press circular stranded aluminium alloy conductor cross section, hold wire diameter length, the corresponding relation of twisting pitch length, annealing temperature, annealing time adopts following table:
As another kind of preferred version, of the present inventionly press circular stranded aluminium alloy conductor and be made up of Fe, Si, Cu, Be, RE, Ce, La, Y, Al, mass percent is 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, and surplus is Al.
As another kind of preferred version, computer contact of the present invention comprises low-smoke bittern-free highly fire-proof with control unit line and extrudes inner cushion layer, low-smoke bittern-free highly fire-proof extrudes inside inner cushion layer and is provided with six pairs of computer contacts and control unit core, often pair of computer contact and control unit core comprise a computer and get in touch with core and a control unit core, computer contact core and control unit core all adopt the soft copper conductor of the crosslinked polyetylene insulated layer of outside parcel, the outside parcel strand of computer contact core and control unit core is to twining package tape, strand extrudes inner cushion layer to being disposed with low-smoke bittern-free highly fire-proof outside twining package tape from the inside to the outside, 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 pair of computer contact and control unit core sectional area are 1.5mm
2and time following, maximum twisting pitch is 80-100mm, 2.5mm
2and time above, maximum twisting pitch should be 100-120mm, star quad stranding pitch is 120-150mm, and adjacent computers contact adopts different twisting pitch from control unit core.
Secondly, the corresponding relation of external diameter and the total shielding thickness of proof copper-wire braided that low-smoke bittern-free highly fire-proof of the present invention extrudes inner cushion layer is as following table:
In addition, transfer of data of the present invention and temperature measuring unit line comprise PBT Loose tube, many UV curing optical fibers are provided with in PBT Loose tube, fiber filling gel is filled with between UV curing optical fiber, be disposed with phosphating steel wire armouring, halogen-free flameproof band, low smoke halogen-free flame-retardant polyolefin oversheath outside PBT Loose tube from the inside to the outside, between the gap of phosphating steel wire armouring, be filled with factice for filling cables; Described UV curing optical fiber adopts the category-A optical fiber in B6 class.
Beneficial effect of the present invention.
The present invention collects electric power transfer, temperature measurement on-line and temperature control, online fault location, the online fault location of partial discharge, ampacity on-line monitoring, cable jacket state analysis, computer remote is got in touch with, Long-distance Control etc. are multi-functional in one, not only can intelligence detection and display cable actual motion temperature, automatic storage history data, consult the operating temperature of cable at any time, automatic overtemperature alarm and online feedback control can also be realized, cable transmission of electric energy to greatest extent can be made, the safe operation of cable can be guaranteed again, also can realize the operations such as computer remote contact and control simultaneously.
The present invention adopts phase-splitting to shield the two-layer compound shielding construction of copper strips and copper strips lapped shielding layer, strengthens the anti-jamming effectiveness of cable.
The present invention arranges the chain armour of individual layer aluminum alloy strip, its chain occlusion structure between layers, guarantees that cable can stand extraneous strong destructive power, even if when cable suffers larger pressure and impulsive force, cable is also not easily breakdown, improves the safety function of cable; And chain armouring structure makes cable intercept with extraneous, even if when fire, armour improves the flame-retardant grade of cable, reduces the danger coefficient of fire.
In addition, the present invention adopts low-smoke bittern-free highly fire-proof twining package tape, low-smoke bittern-free highly fire-proof extrudes inner cushion layer, low-smoke bittern-free highly fire-proof extrudes separation sleeve, low-smoke bittern-free highly fire-proof extrudes oversheath; Flame retardant effect is better, environment friendly and pollution-free.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.Scope is not only confined to the statement of following content.
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; The crosslinked polyetylene insulated layer of 3-; 4-cross-linking type semiconductive polyolefine as external shielding layer; 5-low smoke halogen-free flame-retardant polyolefin packing; 6-phase-splitting shielding 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 armour of 11-individual layer aluminum alloy strip; 12-low-smoke bittern-free highly fire-proof extrudes oversheath; 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--strand is to 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--factice for filling cables; 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-is that mould holds wire diameter length; Φ D-is the diameter of stranded conductor; R-is the excessive radius of mold lubrication district and service area; R-is the excessive radius of sizing area and outlet area.
Embodiment
As shown in the figure, the present invention is by three conductor wire cores, computer contact and control unit line, transfer of data and temperature measuring unit line, low-smoke bittern-free highly fire-proof twining package tape, low-smoke bittern-free highly fire-proof extrudes inner cushion layer, copper strips lapped shielding layer, low-smoke bittern-free highly fire-proof extrudes separation sleeve, the chain armour of individual layer aluminum alloy strip and low-smoke bittern-free highly fire-proof extrude oversheath composition, its structural feature three conductor wire cores, computer contact and control unit line, transfer of data and temperature measuring unit line are arranged on inside low-smoke bittern-free highly fire-proof twining package tape, described copper strips lapped shielding layer is set gradually from the inside to the outside outside low-smoke bittern-free highly fire-proof twining package tape, low-smoke bittern-free highly fire-proof extrudes separation sleeve, the chain armour of individual layer aluminum alloy strip, low-smoke bittern-free highly fire-proof extrudes oversheath, every root core of described three conductor wire cores is followed successively by from inside to outside and presses circular stranded aluminium alloy conductor, cross-linking type semicrystalline polyolefin conduction internal shield, 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 into annealing pot, tightens the bolt of tank mouth, the tracheae of vacuum pump receive annealing tank body gas outlet on, open valve of giving vent to anger, start vacuum pump, start to vacuumize; When vacuum degree reaches to 75 ㎝-Hg, the mains switch of valve-off and vacuum pump, take vacuum tube, then the annealing pot that aluminium alloy conductor is housed is hung in heating furnace, slowly heat, after annealing temperature reaches 440-480 DEG C, start timing and keep temperature, annealing pot, to after 4-6 hour, is recalled heating furnace, slowly cool to room temperature by annealing time; Open cover, hang out conductor; In work is carried out, vacuum degree is kept to be not less than 70cm-Hg.Adopt above-mentioned technique, conductor creep resistant function brings up to more than 130MPa, avoids the absent-mindedness problem caused because of cold flow or creep; Elongation also brings up to 30%, uses more safe and reliable.
Describedly press the impacted process that circular stranded aluminium alloy conductor adopts and be: conductor adopts same diameter and stranded with core type, center is 1, the second layer is 6, third layer is 12, every layer increases by 6 than the internal layer closed on successively later, the direction of lay of outermost layer single line is left-hand, face layer contrary, the twisting pitch of outermost layer single line controls within 12 times of conductor diameter, the twisting pitch of all the other each layer single lines controls between 18-28 times, the Nanoalloy of every one deck presses the little 0.55-0.65mm of stranded external diameter of the internal diameter Selection radio actual measurement of mould, each mould carries out alcohol lubrication and the cooling of drop, alcohol purity is not less than 95%, stranded conductor does not carry out whole core welding, single line welds, 0.5 meter is greater than between any two joints.Adopt above-mentioned impacted process to make round wire press coefficient and arrive 0.93, the pressing coefficient and can arrive 0.95 of special-shaped wire, and the pressing coefficient and can only reach 0.9 of ordinary copper, aluminium conductor.Press through maximum, can make up the shortage of aluminium alloy in volume conduction rate, make stranded conductor core as solid conductor, stranded core external diameter significantly declines, and enhances conducting function, at equal ampacity situation lower conductor external diameter only larger than copper cable 10%.
Describedly press circular stranded aluminium alloy conductor and adopt Nanoalloy mould, mould arranged outside has 45# steel round jacket, the front end of mould is the end of incoming cables that front port is greater than rear port, rear end, end of incoming cables is the first arc transition zone of mold lubrication district and service area, the rear end of the first arc transition zone is for holding wire diameter, the rear end of holding wire diameter is the second arc transition zone of sizing area and outlet area, and the rear end of the second arc transition zone is the leading-out terminal that front port is greater than rear port; The length of described end of incoming cables is 20mm, and the length of leading-out terminal is 10mm, and the length of mould is 40mm, and the diameter of the rear port of leading-out terminal is 20mm, and the external diameter of mould is 30mm, and the external diameter of round jacket is 50mm.The excessive radius at two places must ensure excessively round and smooth, and guarantee that line is smooth and easy, resistance is minimum.Overcoat A adopts 45# steel overcoat, reduces the manufacturing cost of mould, and internal mold B adopts Nanoalloy material, improves the mold use life-span, also makes the surface of conductor more smooth, impulse-free robustness; Together with internal mold B and overcoat A are embedded in by taper fit, the length L of mould sizing area is the key ensureing conductive surface quality and die life, through test of many times, finally determines this this product optimum length.
Describedly press circular stranded aluminium alloy conductor cross section, hold wire diameter length, the corresponding relation of twisting pitch length, annealing temperature, annealing time adopts following table.
Describedly press circular stranded aluminium alloy conductor and be made up of Fe, Si, Cu, Be, RE, Ce, La, Y, Al, mass percent is 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, and surplus is Al.Following table is adopt the performance of this component aluminium alloy conductor to test data.
As seen from the above table, improve the tensile strength of fine aluminium, aluminium alloy cable can support the deadweight of 4000 meters of length, and copper cable can only support 2750 meters.This advantage large span build distribution time embody particularly outstanding.
Add the corrosion-resistant function that Ce0.02-0.026, La0.016-0.02, Y0.014-0.019 can improve aluminium alloy further, particularly electrochemical corrosion, make the anticorrosive function of aluminium alloy greatly be better than fine aluminium and copper, also just extend the useful life of aluminium alloy cable.
Described computer contact comprises low-smoke bittern-free highly fire-proof with control unit line and extrudes inner cushion layer, low-smoke bittern-free highly fire-proof extrudes inside inner cushion layer and is provided with six pairs of computer contacts and control unit core, often pair of computer contact and control unit core comprise a computer and get in touch with core and a control unit core, computer contact core and control unit core all adopt the soft copper conductor of the crosslinked polyetylene insulated layer of outside parcel, the outside parcel strand of computer contact core and control unit core is to twining package tape, strand extrudes inner cushion layer to being disposed with low-smoke bittern-free highly fire-proof outside twining package tape from the inside to the outside, 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 pair of computer contact and control unit core sectional area are 1.5mm
2and time following, maximum twisting pitch is 80-100mm, 2.5mm
2and time above, maximum twisting pitch should be 100-120mm, star quad stranding pitch is 120-150mm, and adjacent computers contact adopts different twisting pitch from control unit core.Adopt the correlated performance test data of above computer contact and control unit line as following table.
The corresponding relation of external diameter and the total shielding thickness of proof copper-wire braided that described low-smoke bittern-free highly fire-proof extrudes inner cushion layer is as following table:
Described transfer of data and temperature measuring unit line comprise PBT Loose tube, many UV curing optical fibers are provided with in PBT Loose tube, fiber filling gel is filled with between UV curing optical fiber, be disposed with phosphating steel wire armouring, halogen-free flameproof band, low smoke halogen-free flame-retardant polyolefin oversheath outside PBT Loose tube from the inside to the outside, between the gap of phosphating steel wire armouring, be filled with factice for filling cables; Described UV curing optical fiber adopts the category-A optical fiber in B6 class.Category-A optical fiber in B6 class is applicable to 0, E, S, C and L-band (1260nm-1625nm), meet whole transmission characteristics of B1 type optical fiber, and be better than B1 class and B4 type optical fiber in macrobending loss parameter, bending radius can get less value, and laser propagation effect is better.
Be understandable that, above about specific descriptions of the present invention, the technical scheme described by the embodiment of the present invention is only not limited to for illustration of the present invention, those of ordinary skill in the art is to be understood that, still can modify to the present invention or equivalent replacement, to reach identical technique effect; Needs are used, all within protection scope of the present invention as long as meet.
Claims (10)
1. an aluminium alloy core intelligent environmental protection type power cable, by three conductor wire cores, computer contact and control unit line, transfer of data and temperature measuring unit line, low-smoke bittern-free highly fire-proof twining package tape, low-smoke bittern-free highly fire-proof extrudes inner cushion layer, copper strips lapped shielding layer, low-smoke bittern-free highly fire-proof extrudes separation sleeve, the chain armour of individual layer aluminum alloy strip and low-smoke bittern-free highly fire-proof extrude oversheath composition, it is characterized in that three conductor wire cores, computer contact and control unit line, transfer of data and temperature measuring unit line are arranged on inside low-smoke bittern-free highly fire-proof twining package tape, described copper strips lapped shielding layer is set gradually from the inside to the outside outside low-smoke bittern-free highly fire-proof twining package tape, low-smoke bittern-free highly fire-proof extrudes separation sleeve, the chain armour of individual layer aluminum alloy strip, low-smoke bittern-free highly fire-proof extrudes oversheath, every root core of described three conductor wire cores is followed successively by from inside to outside and presses circular stranded aluminium alloy conductor, cross-linking type semicrystalline polyolefin conduction internal shield, crosslinked polyetylene insulated layer, cross-linking type semiconductive polyolefine as external shielding layer.
2. a kind of aluminium alloy core intelligent environmental protection type power cable according to claim 1, is characterized in that described conductor wire core adopts three layers of crosslinking process simultaneously extruding continuous vulcanization nitrogen protection, and concrete technology requires as follows:
Plastic 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%; The necessary positiver sealing of curing tube, guarantees that nitrogen pressure is stablized.
Mould with go out linear velocity m/min
Insulation and shielded surfaces plastify good, pore-free, impurity, and smooth surface rounding is without disconnection, and closely coated, uniform external diameter is consistent; Section pore-free, sand holes and impurity defect.
Inner shield, insulation and external shield take that plsitive mold is disposable to be extruded, and insulation is closely extruded on interior screen, and easily peel off 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; The degree of eccentricity (difference of thickness and the ratio of maximum) of insulation is not more than 0.08.
3. a kind of aluminium alloy core intelligent environmental protection type power cable according to claim 2, press described in it is characterized in that circular stranded aluminium alloy conductor press stranded after, the stranded conductor of one-tenth dish is put into annealing pot, tighten the bolt of tank mouth, the tracheae of vacuum pump is received on the gas outlet of annealing tank body, open valve of giving vent to anger, start vacuum pump, start to vacuumize; When vacuum degree reaches to 75 ㎝-Hg, the mains switch of valve-off and vacuum pump, take vacuum tube, then the annealing pot that aluminium alloy conductor is housed is hung in heating furnace, slowly heat, after annealing temperature reaches 440-480 DEG C, start timing and keep temperature, annealing pot, to after 4-6 hour, is recalled heating furnace, slowly cool to room temperature by annealing time; Open cover, hang out conductor; In work is carried out, vacuum degree is kept to be not less than 70cm-Hg.
4. a kind of aluminium alloy core intelligent environmental protection type power cable according to claim 3, pressing the impacted process that circular stranded aluminium alloy conductor adopts described in it is characterized in that is: conductor adopts same diameter and stranded with core type, center is 1, the second layer is 6, third layer is 12, every layer increases by 6 than the internal layer closed on successively later, the direction of lay of outermost layer single line is left-hand, face layer contrary, the twisting pitch of outermost layer single line controls within 12 times of conductor diameter, the twisting pitch of all the other each layer single lines controls between 18-28 times, the Nanoalloy of every one deck presses the little 0.55-0.65mm of stranded external diameter of the internal diameter Selection radio actual measurement of mould, each mould carries out alcohol lubrication and the cooling of drop, alcohol purity is not less than 95%, stranded conductor does not carry out whole core welding, single line welds, 0.5 meter is greater than between any two joints.
5. a kind of aluminium alloy core intelligent environmental protection type power cable according to claim 4, press circular stranded aluminium alloy conductor described in it is characterized in that and adopt Nanoalloy mould, mould arranged outside has 45# steel round jacket, the front end of mould is the end of incoming cables that front port is greater than rear port, rear end, end of incoming cables is the first arc transition zone of mold lubrication district and service area, the rear end of the first arc transition zone is for holding wire diameter, the rear end of holding wire diameter is the second arc transition zone of sizing area and outlet area, and the rear end of the second arc transition zone is the leading-out terminal that front port is greater than rear port; The length of described end of incoming cables is 20mm, and the length of leading-out terminal is 10mm, and the length of mould is 40mm, and the diameter of the rear port of leading-out terminal is 20mm, and the external diameter of mould is 30mm, and the external diameter of round jacket is 50mm.
6. a kind of aluminium alloy core intelligent environmental protection type power cable according to claim 5, presses circular stranded aluminium alloy conductor cross section, holds wire diameter length, the corresponding relation of twisting pitch length, annealing temperature, annealing time adopts following table described in it is characterized in that:
7. a kind of aluminium alloy core intelligent environmental protection type power cable according to claim 6, press circular stranded aluminium alloy conductor described in it is characterized in that to be made up of Fe, Si, Cu, Be, RE, Ce, La, Y, Al, mass percent is 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, and surplus is Al.
8. a kind of aluminium alloy core intelligent environmental protection type power cable according to claim 7, it is characterized in that the contact of described computer comprises low-smoke bittern-free highly fire-proof with control unit line and extrudes inner cushion layer, low-smoke bittern-free highly fire-proof extrudes inside inner cushion layer and is provided with six pairs of computer contacts and control unit core, often pair of computer contact and control unit core comprise a computer and get in touch with core and a control unit core, computer contact core and control unit core all adopt the soft copper conductor of the crosslinked polyetylene insulated layer of outside parcel, the outside parcel strand of computer contact core and control unit core is to twining package tape, strand extrudes inner cushion layer to being disposed with low-smoke bittern-free highly fire-proof outside twining package tape from the inside to the outside, 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 pair of computer contact and control unit core sectional area are 1.5mm
2and time following, maximum twisting pitch is 80-100mm, 2.5mm
2and time above, maximum twisting pitch should be 100-120mm, star quad stranding pitch is 120-150mm, and adjacent computers contact adopts different twisting pitch from control unit core.
9. a kind of aluminium alloy core intelligent environmental protection type power cable according to claim 8, is characterized in that the corresponding relation of external diameter and the total shielding thickness of proof copper-wire braided that described low-smoke bittern-free highly fire-proof extrudes inner cushion layer is as following table:
10. a kind of aluminium alloy core intelligent environmental protection type power cable according to claim 9, it is characterized in that described transfer of data and temperature measuring unit line comprise PBT Loose tube, many UV curing optical fibers are provided with in PBT Loose tube, fiber filling gel is filled with between UV curing optical fiber, be disposed with phosphating steel wire armouring, halogen-free flameproof band, low smoke halogen-free flame-retardant polyolefin oversheath outside PBT Loose tube from the inside to the outside, between the gap of phosphating steel wire armouring, be filled with factice for filling cables; Described UV curing optical fiber adopts the category-A optical fiber in B6 class.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510041638.4A CN104575831B (en) | 2015-01-28 | 2015-01-28 | A kind of aluminium alloy core intelligent environmental protection type power cable |
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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 |
| CN116646125A (en) * | 2023-07-25 | 2023-08-25 | 江阴市源达电工材料有限公司 | Aluminum conductor high-voltage shielding cable |
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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 |
| CN116646125A (en) * | 2023-07-25 | 2023-08-25 | 江阴市源达电工材料有限公司 | Aluminum conductor high-voltage shielding cable |
| 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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