CN102915803A - Flame-resistant extra-high voltage power cable for crosslinked polyethylene insulating double sheaths - Google Patents
Flame-resistant extra-high voltage power cable for crosslinked polyethylene insulating double sheaths Download PDFInfo
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- CN102915803A CN102915803A CN2012103288717A CN201210328871A CN102915803A CN 102915803 A CN102915803 A CN 102915803A CN 2012103288717 A CN2012103288717 A CN 2012103288717A CN 201210328871 A CN201210328871 A CN 201210328871A CN 102915803 A CN102915803 A CN 102915803A
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Abstract
The invention discloses a flame-resistant extra-high voltage power cable for 220kv crosslinked polyethylene insulating double sheaths, which comprises a cable core, wherein the cable core is composed of a conductor and a semi-conductive conductor shielding layer, a crosslinked polyethylene insulating layer and a semi-conductive conductor insulation shielding layer wrapped outside the conductor in sequence; a water-blocking tape buffer layer is wrapped outside the cable core; an aluminum pipe is extruded outside the water-blocking tape buffer layer; an asphalt anticorrosive coating is arranged outside the aluminum pipe; and a polyethylene inner sheath and a flame-resistant polyvinyl chloride outer sheath are extruded outside the asphalt anticorrosive coating in sequence; and a graphitic layer is coated on the outermost layer. The flame-resistant extra-high voltage power cable is simple in manufacturing technology, reasonable in cost, long in service life, good in flexibility, good in waterproof performance and high in security performance.
Description
Technical field
The present invention relates to the power cable field, refer in particular to the fire-retardant ultrahigh voltage power cable of a kind of 220kV cross-linked polyethylene insulated double-sheath.
Background technology
Along with the development of society, the city is increasing, and power load is more and more higher, and the safety requirements of power supply is more and more important.The urban electricity supply circuit is more and more closeer, become increasingly complex, and simultaneously because the city appearance of the city needs, requires attractive in appearancely as far as possible, do not adopt overhead transmission line as far as possible, and as much as possible employing is put cable underground.Based on above reason, present large-scale, megapolis adopted the ultra-high voltage cross-linking Polyethylene insulated cable of 220kV in a large number, gets off to finish the conveying of large capacity electric energy by ground, to satisfy the demand of densely populated metropolis power consumption.
The structure composition of 220kV ultrahigh voltage power cable mainly contains conductor, crosslinked polyetylene insulated and external protection.220kV power cable extra-high-tension cable, the electric field strength after the energising in the cable insulation is larger, and any structural design is improper, manufacturing defect or installation and operation are incorrect, all can cause cable breakdown, can't normally use; In the cables manufacturing process, insulation will guarantee not pollute, if having impurity or bubble in the insulation, then is easy to puncture after the cable energising; If the insulation that cable has moisture to enter cable in running, then the life-span of cable can reduce greatly; Structure (milliken conductor) to the conductor of larger specification cable will adopt the polylith conductor to be stitched together to reduce the kelvin effect of delivery of electrical energy process, improves the transmission capacity of cable, can improve the cable flexibility simultaneously, is convenient to bending; Structural design also will take into full account the water proofing property of cable, guarantees that moisture can not be to the possibility of cable internal penetration in the cable use procedure; Lay and not limited by height fall, easy to maintenance; Because this cable is multiplex in densely populated big city, fire resistance also is necessary, and with the generation of minimizing fire, and prior art can not satisfy above demand.
Summary of the invention
Technical problem to be solved by this invention has provided that a kind of manufacturing process is simple, reasonable price, long service life, flexibility is good, water resistance is good, security performance the is high fire-retardant ultrahigh voltage power cable of 220kV cross-linked polyethylene insulated double-sheath.
The fire-retardant ultrahigh voltage power cable of a kind of cross-linked polyethylene insulated double-sheath of the present invention, comprise cable core, described cable core is by conductor and be extruded in successively conductor outer conductor shield, insulating barrier, insulation screen and consist of, wrapped waterstop resilient coating outside cable core, extruded aluminum tube outside the waterstop resilient coating, outside aluminum pipe, be provided with corrosion-inhibiting coating, outside corrosion-inhibiting coating, extrude successively inner sheath, oversheath, outermost layer coated graphite layer.
As preferably, described conductor is 5 milliken conductors that fan-shaped copper conductor amalgamation forms together.
As preferably, described insulating barrier is cross-linked polyethylene insulating material, and its thickness is 24mm.
As preferably, described aluminum pipe thickness is 2.8mm.
As preferably, described corrosion-inhibiting coating is the pitch anti-corrosion material.
As preferably, described inner sheath is polythene material.
As preferably, described oversheath is the flame-proof polyvinyl chloride material.
Beneficial effect of the present invention is:
1, conductor of the present invention is 5 milliken conductors that fan-shaped copper conductor amalgamation forms together, so that cable has better flexibility, is more conducive to bending.
2, the wrapped multilayer semiconductive of the present invention waterstop, multilayer semiconductive waterstop is soft, and meets water and can expand rapidly, and entering of blocks moisture effectively prolongs cable useful life.
3, extruded aluminum tube of the present invention, aluminum pipe is pressed into again corrugated, improves bending property, and aluminium is the metal material of function admirable, and moisture can not see through; And scribble the pitch anti-corrosion material in aluminum pipe outside, prevent that aluminium is corroded and bores a hole.
Description of drawings
Accompanying drawing 1 is structural representation of the present invention.
Embodiment
As shown in Figure 1, the fire-retardant ultrahigh voltage power cable of a kind of cross-linked polyethylene insulated double-sheath of the present invention, comprise cable core, described cable core is by conductor 1 and be extruded in successively the outer semiconductive conductor shield 2 of conductor 1, crosslinked polyetylene insulated layer 3, semiconductive conductor insulation screen 4 and consist of, wrapped waterstop resilient coating 5 outside cable core, at waterstop resilient coating 5 outer extruded aluminum tubes 6, outside aluminum pipe 6, be provided with pitch corrosion-inhibiting coating 7, outside the pitch corrosion-inhibiting coating, extrude successively polyethylene inner sheath 8, flame-proof polyvinyl chloride oversheath 9, outermost layer coated graphite layer 10.
The invention provides thinking and the method for the fire-retardant ultrahigh voltage power cable of a kind of cross-linked polyethylene insulated double-sheath; method and the approach of this technical scheme of specific implementation are a lot; the above only is preferred implementation of the present invention; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the principle of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.In the present embodiment not clear and definite each component part all available prior art realized.
Claims (7)
1. fire-retardant ultrahigh voltage power cable of cross-linked polyethylene insulated double-sheath, it is characterized in that: comprise cable core, described cable core is by conductor (1) and be extruded in successively the outer conductor shield (2) of conductor (1), insulating barrier (3), insulation screen (4) formation, wrapped waterstop resilient coating (5) outside cable core, extruded aluminum tube (6) outside waterstop resilient coating (5), outside aluminum pipe (6), be provided with corrosion-inhibiting coating (7), outside corrosion-inhibiting coating (7), extrude successively inner sheath (8), oversheath (9), outermost layer coated graphite layer (10).
2. the fire-retardant ultrahigh voltage power cable of cross-linked polyethylene insulated double-sheath according to claim 1, it is characterized in that: described conductor (1) is 5 milliken conductors that fan-shaped copper conductor amalgamation forms together.
3. the fire-retardant ultrahigh voltage power cable of cross-linked polyethylene insulated double-sheath according to claim 1, it is characterized in that: described insulating barrier (3) is cross-linked polyethylene insulating material, and its thickness is 24mm.
4. the fire-retardant ultrahigh voltage power cable of cross-linked polyethylene insulated double-sheath according to claim 1, it is characterized in that: described aluminum pipe (6) thickness is 2.8mm.
5. the fire-retardant ultrahigh voltage power cable of cross-linked polyethylene insulated double-sheath according to claim 1, it is characterized in that: described corrosion-inhibiting coating (7) is the pitch anti-corrosion material.
6. the fire-retardant ultrahigh voltage power cable of cross-linked polyethylene insulated double-sheath according to claim 1, it is characterized in that: described inner sheath (8) is polythene material.
7. the fire-retardant ultrahigh voltage power cable of cross-linked polyethylene insulated double-sheath according to claim 1, it is characterized in that: described oversheath (9) is the flame-proof polyvinyl chloride material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103288717A CN102915803A (en) | 2012-09-07 | 2012-09-07 | Flame-resistant extra-high voltage power cable for crosslinked polyethylene insulating double sheaths |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103288717A CN102915803A (en) | 2012-09-07 | 2012-09-07 | Flame-resistant extra-high voltage power cable for crosslinked polyethylene insulating double sheaths |
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| Publication Number | Publication Date |
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| CN102915803A true CN102915803A (en) | 2013-02-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103288717A Pending CN102915803A (en) | 2012-09-07 | 2012-09-07 | Flame-resistant extra-high voltage power cable for crosslinked polyethylene insulating double sheaths |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103151108A (en) * | 2013-03-12 | 2013-06-12 | 河南开启电力实业有限公司 | Aluminum alloy cable |
| 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 |
| CN103928189A (en) * | 2014-05-04 | 2014-07-16 | 中天科技装备电缆有限公司 | High-power railway communication signal control photo-electricity composite cable |
| CN105097116A (en) * | 2015-07-24 | 2015-11-25 | 中国电力科学研究院 | High-transmission capacity power cable |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201174271Y (en) * | 2008-04-08 | 2008-12-31 | 扬州曙光电缆有限公司 | Super high voltage crosslinked cable |
| CN202307292U (en) * | 2011-11-01 | 2012-07-04 | 江苏东峰电缆有限公司 | 220kV crosslinking polyethylene-insulated power cable |
| CN202307294U (en) * | 2011-11-01 | 2012-07-04 | 江苏东峰电缆有限公司 | 110kV crosslinked polyethylene insulated high-voltage power cable |
| CN202855399U (en) * | 2012-09-07 | 2013-04-03 | 江苏东峰电缆有限公司 | Cross-linked polyethylene insulated and double-sheath flame-retardant ultra-high voltage power cable power cable |
-
2012
- 2012-09-07 CN CN2012103288717A patent/CN102915803A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201174271Y (en) * | 2008-04-08 | 2008-12-31 | 扬州曙光电缆有限公司 | Super high voltage crosslinked cable |
| CN202307292U (en) * | 2011-11-01 | 2012-07-04 | 江苏东峰电缆有限公司 | 220kV crosslinking polyethylene-insulated power cable |
| CN202307294U (en) * | 2011-11-01 | 2012-07-04 | 江苏东峰电缆有限公司 | 110kV crosslinked polyethylene insulated high-voltage power cable |
| CN202855399U (en) * | 2012-09-07 | 2013-04-03 | 江苏东峰电缆有限公司 | Cross-linked polyethylene insulated and double-sheath flame-retardant ultra-high voltage power cable power cable |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103151108A (en) * | 2013-03-12 | 2013-06-12 | 河南开启电力实业有限公司 | Aluminum alloy cable |
| 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 |
| CN103928189A (en) * | 2014-05-04 | 2014-07-16 | 中天科技装备电缆有限公司 | High-power railway communication signal control photo-electricity composite cable |
| CN103928189B (en) * | 2014-05-04 | 2017-01-18 | 中天科技装备电缆有限公司 | High-power railway communication signal control photo-electricity composite cable |
| CN105097116A (en) * | 2015-07-24 | 2015-11-25 | 中国电力科学研究院 | High-transmission capacity power cable |
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Application publication date: 20130206 |