CN1246861C - 500kV ultra-high voltage cross-linking cable and its production process - Google Patents
500kV ultra-high voltage cross-linking cable and its production process Download PDFInfo
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- CN1246861C CN1246861C CN 01142845 CN01142845A CN1246861C CN 1246861 C CN1246861 C CN 1246861C CN 01142845 CN01142845 CN 01142845 CN 01142845 A CN01142845 A CN 01142845A CN 1246861 C CN1246861 C CN 1246861C
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Abstract
The present invention is composed of a conductor (1), a semi-conductive winding covering layer (2), a shielding layer (3) of the conductor, an insulation layer (4), an insulation shielding layer (5), a buffering layer (6), a metal sheath (7), an anti-corrosion layer (8), an outer protection layer (9) and a semi-conductive coating layer(10). The present invention mainly adopts a three-layer coextrusion mode and technical methods of on-line initial stress elimination, argon-arc welding, etc. Meanwhile, the present invention adopts insulation materials with high dielectric property and super-clean semi-conductive shielding materials with special smoothness. Special additive agents are added to the semi-conductive shielding materials. Thus, the breakdown field strength of a cable is increased, and various defects of the present invention are reduced to the lowest state. Therefore, the present invention is suitable for a main trunk circuit for electric power transmission, and provides a high and new technical product and a technical method thereof for the field of manufacturing wires and cables.
Description
The present invention relates to the electric wire field, exactly belong to 500kV and above superhigh pressure electric wire cables manufacturing field.
At present, domestic 500kV ultra-high voltage cross-linking cable does not still have manufacturing because of technical reason.And according to China's Tenth Five-year plan, tens hydroelectric stations that the Changjiang river and the Huanghe valley are being built, installed capacity all more than gigawatt, all will preferentially be adopted the 500kV ultra-high voltage cross-linking cable.Simultaneously, along with the continuous growth of big city electricity needs, it is in the near future at limited power transmission space big capacity 500kV electrical power transmission system directly to be entered the big city.
Purpose of the present invention just provides the 500kV ultra-high voltage cross-linking cable and the manufacturing technique method of a kind of big capacity, low-loss, high reliability, freedom from repairs.
500kV ultra-high voltage cross-linking cable of the present invention is made up of conductor, semiconductive lapping layer, conductor shield, insulating barrier, insulation screen, resilient coating, metallic sheath, anticorrosive coat, outer jacket and semiconducting coating; Its manufacturing technique method is by the three-layer co-extruded insulated wire cores of making of vertical cross-linking production line (VCV), again by manufacturing, resilient coating, metal sheath, anticorrosive coat, outer jacket and semiconducting coatings such as wrapped machine, argon arc welding production line, plastic extruding machines.
Introduce the present invention in detail below in conjunction with accompanying drawing.
Fig. 1: schematic cross-section of the present invention.
Among the figure: 1 is conductor, and 2 is the semiconductive lapping layer, and 3 is conductor shield, and 4 is insulating barrier, and 5 is insulation screen, and 6 is resilient coating, and 7 is metallic sheath, and 8 is anticorrosive coat, and 9 is outer jacket, and 10 is semiconducting coating.
500kV ultra-high voltage cross-linking cable of the present invention is by conductor (1), semiconductive lapping layer (2), conductor shield (3), insulating barrier (4), insulation screen (5), cushion (6), protective metal shell (7), anticorrosive coat (8), outer jacket (9) and semiconducting coating (10) form, the outer wrapped semi-conductive tape of conductor (1) forms semiconductive lapping layer (2), three-layer co-extruded semiconductive conductor shielding material outside semiconductive lapping layer (2), Insulation Material and semiconductive insulation shielding material form conductor shield (3), insulating barrier (4), insulation screen (5), wrapped semiconductive waterstop forms cushion (6) outside insulation screen (5), vertically the weld metal aluminium strip forms protective metal shell (7) outside cushion (6), outside protective metal shell (7), smear pitch and form anticorrosive coat (8), outside anticorrosive coat (8), extrude plastic sheath and form outer jacket (9), outside outer jacket (9), smear the semiconductive powder and form semiconducting coating (10) (seeing Fig. 1). Wherein, conductor (1) adopts non-milliken conductor, also can adopt milliken conductor; Protective metal shell (7) is the corrugated aluminium pipe structure.
The process of 500kV ultra-high voltage cross-linking cable of the present invention is: a. is with the wrapped 1-2 semiconductive twining package tape of conductor (1) elder generation of making, make semiconductive lapping layer (2), again by three-layer co-extruded conductor shield (3), insulating barrier (4), the insulation screen (5) made of vertical cross-linked production line (VCV), insulating barrier (4) degree of eccentricity is less than 8%, the Insulation Material that insulating barrier (4) uses adopts contaminant size less than the ultra-clean cross-linked polyethylene insulating material of 50 μ m, thousand grades of purifications are adopted in the Insulation Material chamber, extrude ten thousand grades of purifications of unit room, by the online prestressing force cancellation element of vertical cross-linked production line, eliminate insulating barrier (4) thermal stress, conductor shield (3) and insulation screen (5) materials'use ultra-smooth shielding material; B. outside insulation screen (5) equably wrapped 3-4 layer semiconductive waterstop form cushion (6); C. outside cushion (6), indulge the alclad band, aluminium strip adopts electrician's aluminium sheet of 3.0～3.5mm thickness, use the argon arc welding production line to weld, face of weld is uniform and smooth, by the rolling corrugated of lipper, form corrugated aluminum sheath protective metal shell (7), form anticorrosive coat (8) in the surperficial asphalt-coating of corrugated aluminum sheath protective metal shell (7) again; D. extrude polyvinyl chloride (PVC) or polyethylene (PE) oversheath (9) by extruding machine outside anticorrosive coat (8), oversheath (9) surface uniform is smeared the semiconductive graphite powder, forms semiconducting coating (10).
The present invention adopts the insulating materials of high dielectric property and is added with the smooth semiconductive shieldin material of ultra-clean spy of specialist additive, thereby improves the cable breakdown field intensity, makes various defective of the present invention drop to minimum state. The present invention adopts advanced metal wrinkled welding of aluminum sheath as watertight composition, has effectively solved cable water inlet problem, and the present invention is applicable to the backbone of electric power transfer, for electric wire manufacturing field provides a kind of new high-tech product and process.
Below in conjunction with embodiment structure of the present invention and technical process are described:
With 1 * 800mm
2, 500kV ultra-high voltage cross-linking polyethylene insulation corrugated aluminum sheath power cable is example
| The structure title | Unit | Numerical value | Use equipment |
| Conductor | Cross section mm 2/ diameter mm | 800/34.0 | Stranding machine |
| The semiconductive lapping layer | Thickness mm | 0.1 | |
| Conductor shield | Thickness mm | 1.5 | The vertical cross-linking production line of VCV |
| Insulating barrier | Thickness mm | 32.0 | |
| Insulation screen | Thickness/diameter mm | 1.0/105.0 | |
| Resilient coating | Thickness mm | 3.0 | Wrapped machine |
| The aluminum metal cover | Thickness mm | 3.3 | The argon arc welding production line |
| The pitch anticorrosive coat | Thickness mm | 0.3 | Φ 200 extruder production lines |
| The polyethylene outer jacket | Thickness/external diameter mm | 5.5/137.0 | |
| Semiconducting coating | Thickness mm | 0.1 |
Claims (4)
1. 500kV ultra-high voltage cross-linking cable, it is characterized in that it is by conductor (1), semiconductive lapping layer (2), conductor shield (3), insulating barrier (4), insulation screen (5), resilient coating (6), metallic sheath (7), anticorrosive coat (8), outer jacket (9) and semiconducting coating (10) are formed, the outer wrapped semi-conductive tape of conductor (1) forms semiconductive lapping layer (2), three-layer co-extruded semiconductive inner shield material outside semiconductive lapping layer (2), Insulation Material, semiconductive external shield material forms conductor shield (3), insulating barrier (4), insulation screen (5), wrapped semiconductive waterstop forms resilient coating (6) outside insulation screen (5), vertically the weld metal aluminium strip forms metallic sheath (7) outside resilient coating (6), outside metallic sheath (7), smear pitch and form anticorrosive coat (8), outside anticorrosive coat (8), extrude plastic sheath and form outer jacket (9), outside outer jacket (9), smear the semiconductive powder and form semiconducting coating (10).
2. 500kV ultra-high voltage cross-linking cable according to claim 1 is characterized in that described conductor (1) adopts non-milliken conductor, or adopts milliken conductor.
3. 500kV ultra-high voltage cross-linking cable according to claim 1 is characterized in that described metallic sheath (7) is corrugated aluminum pipe structure.
4. process of producing the 500kV ultra-high voltage cross-linking cable is characterized in that:
A. with the wrapped 1-2 layer of conductor (1) the semiconductive twining package tape of making, make semiconductive lapping layer (2), again by the three-layer co-extruded conductor shield (3) of making of vertical cross-linking production line, insulating barrier (4), insulation screen (5), insulating barrier (4) degree of eccentricity is less than 8%, the Insulation Material that insulating barrier (4) uses adopts the ultra-clean cross-linked polyethylene insulating material of contaminant size less than 50 μ m, thousand grades of purifications are adopted in the Insulation Material chamber, extrude ten thousand grades of purifications of unit room, by the online prestressing force cancellation element of vertical cross-linking production line, eliminate insulating barrier (4) thermal stress, insulating barrier (4) layer thickness is 30-35mm, and conductor shield (3) and insulation screen (5) material use ultra-smooth shielding material;
B. wrapped equably 3-4 layer semiconductive waterstop forms resilient coating (6) outside outer shielding layer (5);
C. outside resilient coating (6), indulge the alclad band, aluminium strip adopts electrician's aluminium sheet of 3.0～3.5mm thickness, use the argon arc welding production line to weld, face of weld is uniform and smooth, after the rolling corrugated of lipper, form corrugated aluminum sheath metallic sheath (7), form anticorrosive coat (8) at corrugated aluminum sheath metallic sheath (7) surface applied pitch again;
D. extrude polyvinyl chloride or polyethylene oversheath (9) by plastic extruding machine outside anticorrosive coat (8), the semiconductive graphite powder is evenly smeared on oversheath (9) surface, forms semiconducting coating (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01142845 CN1246861C (en) | 2001-12-26 | 2001-12-26 | 500kV ultra-high voltage cross-linking cable and its production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01142845 CN1246861C (en) | 2001-12-26 | 2001-12-26 | 500kV ultra-high voltage cross-linking cable and its production process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1428792A CN1428792A (en) | 2003-07-09 |
| CN1246861C true CN1246861C (en) | 2006-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01142845 Expired - Lifetime CN1246861C (en) | 2001-12-26 | 2001-12-26 | 500kV ultra-high voltage cross-linking cable and its production process |
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| Country | Link |
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| CN (1) | CN1246861C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101702343B (en) * | 2009-11-17 | 2011-12-14 | 芜湖明远电线电缆有限责任公司 | Method for producing fire-resistant cable |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7459635B2 (en) * | 2003-07-25 | 2008-12-02 | Prysmian Cavi E Sistemi Energia S.R.L. | Continuous process for manufacturing electrical cables |
| CN100354987C (en) * | 2005-08-30 | 2007-12-12 | 上海乐庭电子线缆有限公司 | Method for fabricating fire resistant communication cable, and products |
| JP5362270B2 (en) * | 2008-07-03 | 2013-12-11 | 矢崎総業株式会社 | Shielded wire, braided terminal processing method of shielded wire, and braided terminal processing apparatus |
| CN101728033B (en) * | 2010-02-11 | 2012-04-18 | 天津塑力集团超高压电缆有限公司 | High-voltage cable asphalt coating machine |
| CN102063961A (en) * | 2010-12-01 | 2011-05-18 | 江苏亚特电缆有限公司 | 45kV three-core power cable |
| CN102063960A (en) * | 2010-12-01 | 2011-05-18 | 江苏亚特电缆有限公司 | 45kV single-core power cable |
| CN102568701B (en) * | 2012-02-09 | 2013-05-01 | 艾庆南 | Production process and equipment for producing 10-35kV power cable by silane crosslinkable polyethylene |
| CN103345965A (en) * | 2013-07-09 | 2013-10-09 | 无锡市曙光电缆有限公司 | 500kV extra-high voltage water-blocking power cable |
| CN103366897B (en) * | 2013-08-03 | 2016-05-04 | 浙江亘古电缆股份有限公司 | The vertical tower of the vertical L-type chemical crosslinking of VCV cable production technology and carrying |
| CN103943266A (en) * | 2014-04-04 | 2014-07-23 | 江苏亨通高压电缆有限公司 | High-voltage power cable with insulated outlet formed through aluminum core split conductor in extruded mode |
| CN106024187A (en) * | 2016-07-01 | 2016-10-12 | 远东电缆有限公司 | Cross-linked polyethylene insulated power cable for smart energy in shallow seas and lakes and manufacturing method thereof |
| CN107240447A (en) * | 2017-07-19 | 2017-10-10 | 无锡市曙光电缆有限公司 | A kind of smooth aluminium sheath EHV XLPE power cable |
| CN108847308A (en) * | 2018-06-20 | 2018-11-20 | 台州学院 | A kind of crosslinked polyetylene insulated pvc sheath cable and its preparation process |
| CN120565199A (en) * | 2025-07-08 | 2025-08-29 | 广东远光电缆实业有限公司 | A preparation process for energy-saving aluminum alloy cable |
-
2001
- 2001-12-26 CN CN 01142845 patent/CN1246861C/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101702343B (en) * | 2009-11-17 | 2011-12-14 | 芜湖明远电线电缆有限责任公司 | Method for producing fire-resistant cable |
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| Publication number | Publication date |
|---|---|
| CN1428792A (en) | 2003-07-09 |
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