CN101527190A - Manufacture method of wire cable - Google Patents
Manufacture method of wire cable Download PDFInfo
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- CN101527190A CN101527190A CN200910043050A CN200910043050A CN101527190A CN 101527190 A CN101527190 A CN 101527190A CN 200910043050 A CN200910043050 A CN 200910043050A CN 200910043050 A CN200910043050 A CN 200910043050A CN 101527190 A CN101527190 A CN 101527190A
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Abstract
The invention relates to a manufacture method of a wire cable which comprises a conductor, an inner shielding layer 3 and an insulating layer 4, wherein the conductor comprises an inner core part 1 and an outer core part 2 which are in a stranded and compacted mode. The manufacture method comprises the following steps: the outer core part 2 comprising a plurality of layers of multi-strand electric pure-aluminum leads and the inner core part 1 comprising a plurality of layers of multi-strand zinc-plated steel wires are together stranded and compacted by a stranding machine to form the conductor which is extruded by a double-layer co-extrusion method at a temperature of 90 DEG C to 225 DEG C to form the inner shielding layer 3 and the insulating layer 4 wrapping the cable conductor. The erection span of the aerial cable can increase to 60 m to 70 m so as to lessen poles, lower the construction design difficulty, decrease the engineering cost and avoid a theft phenomenon, and the wire cable has high tensile strength, conductivity, safety factor, vibrancy resistance improvement and prolonged service life. Compared with the prior art, the invention has the advantages of stable quality, simple manufacture process, low manufacture cost, and the like.
Description
Technical field
The present invention relates to a kind of manufacture method of electric wire, be specifically related to a kind of manufacture method of steel reinforced aluminium conductor aerial insulated cable.
Background technology
Electric wire is the more traditional series products of wires and cables industry, and its general use is had many uses having the mobile environment that lays, and is wires and cables industry one big class major product.The aerial insulated cable of producing by national standard has only aluminium core overhead insulated cable, copper core overhead insulated cable, aluminium alloy core aerial insulated cable.At present, the common use in rural area, city suburbs be 10kV aluminium core overhead insulated cable, span generally is not more than 50 meters, its weak point is: design and construction difficulties, need to increase shaft tower quantity, increase engineering cost, the intensity of cable is impaired, nargin is not enough; If adopt the copper core overhead insulated cable, the conductor unit quality is big, and sag is big, and span is little, increase engineering cost, and stolen phenomenon is serious; If adopt the aluminium alloy core aerial insulated cable, then manufacturing technology is immature, the quality instability, and manufacturing process is loaded down with trivial details, the manufacturing cost height.
Summary of the invention
The objective of the invention is to overcome the above-mentioned deficiency of prior art, and provide a kind of manufacture method of electric wire, higher with the tensile strength that improves electric wire and conductance and coefficient of safety, increase the span of setting up of aerial cable, reduce shaft tower, save the project cost cost, improve the vibration resistance of electric wire, the useful life of extending wire cable.
Technical scheme of the present invention is: a kind of manufacture method of electric wire, this cable comprises the inner core that is made of the multi-lever and multi-strand galvanized steel wire that is positioned at cable center and is positioned at conductor (core bundle body), internal shield and the insulating barrier that outer core that the outer field multi-lever and multi-strand electrician of inner core fine aluminium lead constitutes constitutes in stranded mode of pressing, internal shield is coated on outside the conductor, and insulating barrier is coated on outside the internal shield; Its manufacture method comprises the following steps:
1), the manufacturing of conductor: in order to increase tensile strength, the inner core that the outer core that multi-lever and multi-strand electrician fine aluminium lead is constituted by stranding machine constitutes with the multi-lever and multi-strand galvanized steel wire is stranded and press the formation conductor; The activity coefficient that adopts when pressing is 0.92-0.95, and the deviation in roundness of cable conductor is 5%～7%;
2), coat internal shield and insulating barrier: internal shield adopts polythene material, and insulating barrier adopts black weather resistant polythene material, adopts the double-layer coextrusion method to extrude formation by the screw-type extrusion machine and is coated on conductor outer internal shield and insulating barrier.
The further technical scheme of the present invention is: the screw-type extrusion machine adopts the double-layer coextrusion method to extrude under 90 ℃～225 ℃ temperature and forms internal shield and the insulating barrier that coats outside the cable conductor.
The further again technical scheme of the present invention is: when internal shield is extruded through plastic extruding machine, humidity province on the extrusion screw rod is divided into 6 districts in the equispaced from front to back with spiro rod length, 1 district wherein: 90 ℃～130 ℃, 2 districts: 95 ℃～135 ℃, 3 districts: 100 ℃～140 ℃, 4 districts: 105 ℃～145 ℃, 5 districts: 110 ℃～150 ℃, 6 districts: 125 ℃～165 ℃; When insulating barrier is extruded through plastic extruding machine, humidity province on the extrusion screw rod is divided into 8 districts in the equispaced from front to back with spiro rod length, 1 district wherein: 150 ℃～190 ℃, 2 districts: 155 ℃～195 ℃, 3 districts: 160 ℃～200 ℃, 4 districts: 165 ℃～205 ℃, 5 districts: 170 ℃～210 ℃, 6 districts: 175 ℃～215 ℃, 7 districts: 180 ℃～220 ℃, 8 districts: 185 ℃～225 ℃.
The present invention further technical scheme is: when the conductor nominal area of section at 70mm
2And when following internal shield to extrude thickness be 0.3-0.5mm, when the conductor nominal area of section at 95mm
2And when above internal shield to extrude thickness be 0.5-0.65mm, the conductor nominal area of section is at 70mm
2And following and 95mm
2And when above, it is 3.35-3.45mm that insulating barrier is extruded thickness.
The present invention is owing to adopt the steel reinforced aluminium conductor aerial insulated cable, combine the advantage of various existing cables, the span of setting up of aerial cable rises to 60～70 meters, thereby minimizing shaft tower, reduce design and construction difficulty and engineering cost, avoid the generation of stolen phenomenon, and the tensile strength of electric wire and conductance and coefficient of safety height, improve the vibration resistance of electric wire, in the useful life of extending wire cable, compared with prior art, has steady quality, manufacturing process is simple, characteristics such as low cost of manufacture.
Below in conjunction with the drawings and specific embodiments detailed content of the present invention is further described.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
As shown in Figure 1: a kind of manufacture method of electric wire, this cable comprises conductor (core bundle body), internal shield 3 and the insulating barrier 4 that is made of in stranded mode of pressing inner core 1 and outer core 2, inner core 1 is made of center galvanized steel wire and the six strands of plating core steel wires around the center that are positioned at cable center, outer core 2 is made of multiply electrician fine aluminium lead, it is positioned at the outside of inner core 1, internal shield 3 is coated on outside the conductor, and insulating barrier 4 is coated on outside the internal shield; Its manufacture method comprises the following steps:
1), the manufacturing of conductor: the outer core of multiply aluminium single line being formed by equipment such as 500 type frame type stranding machines and 500 type crosswise wire stranders 2 is stranded and press with inner core 1; The activity coefficient that adopts when pressing is 0.92-0.95, and the deviation in roundness of cable conductor is 5%～7%;
2), coat internal shield 3 and insulating barrier 4: internal shield 3 adopts polythene material, insulating barrier 4 adopts black weather resistant polythene material, adopts the double-layer coextrusion method to extrude by Φ 120+ Φ 90 screw-type extrusion machines and forms internal shield 3 and the insulating barrier 4 that is coated on outside the conductor; When internal shield 3 is extruded through plastic extruding machine, humidity province on the extrusion screw rod is divided into 6 districts in the equispaced from front to back with spiro rod length, 1 district wherein: 90 ℃～130 ℃, 2 districts: 95 ℃～135 ℃, 3 districts: 100 ℃～140 ℃, 4 districts: 105 ℃～145 ℃, 5 districts: 110 ℃～150 ℃, 6 districts: 125 ℃～165 ℃, when the conductor nominal area of section at 70mm
2And when following internal shield 3 to extrude thickness be 0.3-0.5mm, when the conductor nominal area of section at 95mm
2And when above internal shield 3 to extrude thickness be 0.5-0.65mm; When insulating barrier 4 is extruded through plastic extruding machine, humidity province on the extrusion screw rod is divided into 8 districts in the equispaced from front to back with spiro rod length, 1 district wherein: 150 ℃～190 ℃, 2 districts: 155 ℃～195 ℃, 3 districts: 160 ℃～200 ℃, 4 districts: 165 ℃～205 ℃, 5 districts: 170 ℃～210 ℃, 6 districts: 175 ℃～215 ℃, 7 districts: 180 ℃～220 ℃, 8 districts: 185 ℃～225 ℃, the conductor nominal area of section is at 70mm
2And following and 95mm
2And when above, it is 3.35-3.45mm that insulating barrier 4 is extruded thickness.
Claims (5)
1, a kind of manufacture method of electric wire, it is characterized in that this cable comprises the inner core that is made of the multi-lever and multi-strand galvanized steel wire that is positioned at cable center and is positioned at conductor, internal shield and the insulating barrier that outer core that the outer field multi-lever and multi-strand electrician of inner core fine aluminium lead constitutes constitutes in stranded mode of pressing, internal shield is coated on outside the conductor, and insulating barrier is coated on outside the internal shield; Its manufacture method comprises the following steps:
1), the manufacturing of conductor: in order to increase tensile strength, the inner core that the outer core that multi-lever and multi-strand electrician fine aluminium lead is constituted by stranding machine constitutes with the multi-lever and multi-strand galvanized steel wire is stranded and press the formation conductor; The activity coefficient that adopts when pressing is 0.92-0.95, and the deviation in roundness of cable conductor is 5%～7%;
2), coat internal shield and insulating barrier: internal shield adopts polythene material, and insulating barrier adopts black weather resistant polythene material, adopts the double-layer coextrusion method to extrude formation by the screw-type extrusion machine and is coated on conductor outer internal shield and insulating barrier.
2, the manufacture method of electric wire according to claim 1 is characterized in that the screw-type extrusion machine adopts the double-layer coextrusion method to extrude and forms internal shield and the insulating barrier that coats outside the cable conductor under 90 ℃～225 ℃ temperature.
3, the manufacture method of electric wire according to claim 2, when it is characterized in that internal shield is extruded through plastic extruding machine, humidity province on the extrusion screw rod is divided into 6 districts in the equispaced from front to back with spiro rod length, 1 district wherein: 90 ℃～130 ℃, 2 districts: 95 ℃～135 ℃, 3 districts: 100 ℃～140 ℃, 4 districts: 105 ℃～145 ℃, 5 districts: 110 ℃～150 ℃, 6 districts: 125 ℃～165 ℃; When insulating barrier is extruded through plastic extruding machine, humidity province on the extrusion screw rod is divided into 8 districts in the equispaced from front to back with spiro rod length, 1 district wherein: 150 ℃～190 ℃, 2 districts: 155 ℃～195 ℃, 3 districts: 160 ℃～200 ℃, 4 districts: 165 ℃～205 ℃, 5 districts: 170 ℃～210 ℃, 6 districts: 175 ℃～215 ℃, 7 districts: 180 ℃～220 ℃, 8 districts: 185 ℃～225 ℃.
4, the manufacture method of electric wire according to claim 1 and 2 is characterized in that working as the conductor nominal area of section at 70mm
2And when following internal shield to extrude thickness be 0.3-0.5mm, when the conductor nominal area of section at 95mm
2And when above internal shield to extrude thickness be 0.5-0.65mm, the conductor nominal area of section is at 70mm
2And following and 95mm
2And when above, it is 3.35-3.45mm that insulating barrier is extruded thickness.
5, the manufacture method of electric wire according to claim 3 is characterized in that working as the conductor nominal area of section at 70mm
2And when following internal shield to extrude thickness be 0.3-0.5mm, when the conductor nominal area of section at 95mm
2And when above internal shield to extrude thickness be 0.5-0.65mm, the conductor nominal area of section is at 70mm
2And following and 95mm
2And when above, it is 3.35-3.45mm that insulating barrier is extruded thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910043050A CN101527190A (en) | 2009-03-31 | 2009-03-31 | Manufacture method of wire cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910043050A CN101527190A (en) | 2009-03-31 | 2009-03-31 | Manufacture method of wire cable |
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| Publication Number | Publication Date |
|---|---|
| CN101527190A true CN101527190A (en) | 2009-09-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910043050A Pending CN101527190A (en) | 2009-03-31 | 2009-03-31 | Manufacture method of wire cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103390462A (en) * | 2013-08-01 | 2013-11-13 | 无锡市新阳光电缆有限公司 | Tensile type insulating aerial cable |
-
2009
- 2009-03-31 CN CN200910043050A patent/CN101527190A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103390462A (en) * | 2013-08-01 | 2013-11-13 | 无锡市新阳光电缆有限公司 | Tensile type insulating aerial cable |
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Application publication date: 20090909 |