CN102903447A - 6-35 KV mechanical impact resistance three-core fireproof power cable - Google Patents
6-35 KV mechanical impact resistance three-core fireproof power cable Download PDFInfo
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- CN102903447A CN102903447A CN2012104434123A CN201210443412A CN102903447A CN 102903447 A CN102903447 A CN 102903447A CN 2012104434123 A CN2012104434123 A CN 2012104434123A CN 201210443412 A CN201210443412 A CN 201210443412A CN 102903447 A CN102903447 A CN 102903447A
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Abstract
The invention discloses a 6-35 KV mechanical impact resistance three-core fireproof power cable, comprising single-core cables, wherein each single-core cable is composed of a conductor, a conductor shielding layer, an insulating layer, an insulating shielding layer, a copper strip shielding layer, a steel wire reinforcement layer and a copper strip layer in this order from inside outwards; three single-core cables are bound by a wrapping tape layer with a gap therebetween; a filling strip is arranged in the gap between the three single-core cables and the wrapping tape layer; and an inner sheath layer, a steel strip armoring layer and an outer sheath layer are orderly arranged from the wrapping tape layer outwards. The 6-35 KV mechanical impact resistance three-core fireproof power cable is provided with the steel wire reinforcement layer, the outer sheath layer, the filling strip with a projection and the wrapping tape layer; when the cable is under strong external mechanical impact, the steel wire reinforcement layer is capable of effectively protecting the insulating wire cores of the cables against critical damage; and simultaneously, the copper strip shielding layers of the insulating wire cores are not in contact with the external thermal insulating layer of the cable, so that the efficiency of transferring external heat inwards when the cable is heated is effectively reduced; and as a result, the internal temperature of the cable is reduced.
Description
Technical field
The present invention relates to electrical machinery and equipment and make the field, relate in particular to the anti-mechanical shock three core fireproof power cables of a kind of 6～35KV.
Background technology
Existing fire safe type midium voltage cable technology, generally adopt after cable cabling, the cable heart extrudes flame retardant coating outward, these flame retardant coatings generally adopt mineral mixture or ceramic silicon rubber, after the fireprotection layer setting is finished, cable is surrounded with the steel-tape armouring layer outward, and outermost layer extrudes the external sheath layer that adopts fire proofing.Adopt the cable of said structure can realize that cable bears behind certain fire process, as requested again energising, cable still can be powered a period of time, but under fire hazard environment, in the fire process or in the fire extinguishing procedure, inevitably can occur because uncontrollable former cause such as cable testing bridge come off, building collapsing or the external force factor such as falling object occurs and act on the cable, thereby cause damage to cable.Because midium voltage cable requires all very high to the integrality of conductor shield, insulating barrier, insulation screen; the screen of cable and insulating barrier all are in the high temperature in the fire; mechanical performance significantly descends; do not providing to cable in the situation of perfect safeguard measure; if being subject to larger external strength, impacts by cable; and the distortion of screen and insulating barrier easily occurs or break; thereby cause cable damaged; can't guarantee the integrality of cable line; after fire process finishes; cable can't be realized power supply capacity, thereby makes the fire-resistant function of cable forfeiture.
Summary of the invention
In order to overcome defects, the invention provides the anti-mechanical shock three core fireproof power cables of a kind of 6～35KV.
To achieve these goals, technical scheme of the present invention is: the anti-mechanical shock three core fireproof power cables of a kind of 6～35KV, comprise single-core cable, described single-core cable is followed successively by wire, conductor shield, insulating barrier, insulation screen, copper strip shielding layer, steel wire reinforcing layer and copper strips layer from inside to outside, three single-core cable outsides are provided with wrapped belt three single-core cables and gap-like are tied up, three single-core cables and place, twining package tape lamellar spacing are provided with packing, and wrapped belt is followed successively by inner restrictive coating, steel-tape armouring layer and external sheath layer outward.
Further, described inner restrictive coating is the oxygen barrier the coat layer of power cable of fire retardant for the mixture by aluminium hydroxide and magnesium hydroxide.
Further, described external sheath layer is low-smoke halogen-free polyolefin cable material.
Further, described steel wire reinforcing layer is that the spiral coiling diameter in the copper strip shielding layer outside is that 1.5-2mm, helix pitch are the wire of 1.5-2 times of diameter, described wire is the non-magnetic stainless steel silk, and non-magnetic stainless steel silk surface is provided with the high temperature resistant heat insulation material coating that is made of nanoceramic particles and carbonate compound.
Further, described packing is hollow, and material is ceramic silicon rubber, and the surface is provided with the projection of interval 1～5mm, height 1～5mm.
Further, to be provided with highly be the projection of 1～3mm to described wrapped belt surfaces externally and internally.
The invention has the beneficial effects as follows: 1, under the protection of the steel wire reinforcing layer of this cable; in the fire hazard environment; be in the situation of fully cooling after cable fire finishes; if being subject to stronger exterior mechanical, impacts by cable; steel wire reinforcing layer can effectively protect the insulated wire cores of cable not to be subject to mortal injury; guarantee that cable after fire process finishes, still can guarantee the integrality of circuit, possess reliable power supply capacity.The high temperature resistant heat insulation material that the surface-coated of steel wire reinforcing layer is made of nanoceramic particles and silicate compound; thereby realize that insulated wire cores is within the protection of the heat insulation spring coil that is made of the non-magnetic stainless steel silk; insulated wire cores copper strip shielding layer does not contact with the outer insulative layer of cable simultaneously, effectively reduces the efficient that outside heat is inwardly transmitted in the cable heated situation.
2, compare with individual layer or double-deck extrusion type cable fire-proof layer; adopt packing to add the fireprotection layer of wrapped belt; face contact between layers by original cable; be improved to a contact; decrease the cable fire-proof layer protect core and the outside contact-making surface that is subjected between the thermosphere; decrease the hot transfer efficiency of cable ecto-entad, thereby reduced the temperature of cable inside.
3, behind the stranding, the one-tenth cable core of cable extrudes the high flame-retardant cable material external sheath layer that one deck is comprised of WinGel outward, the cable heated temperature reaches when 240 degree are above to reach higher temperature, aluminium hydroxide, magnesium hydroxide begin to decompose successively, and the hydrone that produces in the decomposable process plays the fire-retardant effect of oxygen barrier.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is packing of the present invention and wrapped belt joint portion partial enlarged drawing.
Embodiment
The present invention is described further below in conjunction with specific embodiment.
As shown in Figure 1, the anti-mechanical shock three core fireproof power cables of a kind of 6～35KV, comprise single-core cable, described single-core cable is followed successively by wire 1, conductor shield 2, insulating barrier 3, insulation screen 4, copper strip shielding layer 5, steel wire reinforcing layer 6 and copper strips layer 7 from inside to outside, three single-core cable outsides are provided with wrapped belt 8 three single-core cables and gap-like are tied up, three single-core cables and place, twining package tape lamellar spacing are provided with packing 9, and wrapped belt 8 is followed successively by inner restrictive coating 10, steel-tape armouring layer 11 and external sheath layer 12 outward.
Described inner restrictive coating 10 is the oxygen barrier the coat layer of power cable of fire retardant for the mixture by aluminium hydroxide and magnesium hydroxide.
Described external sheath layer 12 is low-smoke halogen-free polyolefin cable material.
Described steel wire reinforcing layer 6 is that 1.5-2mm, helix pitch are the wire of 1.5-2 times of diameter for the spiral coiling diameter in copper strip shielding layer 5 outside, described wire is the non-magnetic stainless steel silk, and non-magnetic stainless steel silk surface is provided with the high temperature resistant heat insulation material coating that is made of nanoceramic particles and carbonate compound.
As shown in Figure 2, described packing 9 is hollow, and material is ceramic silicon rubber, and the surface is provided with the projection 13 of interval 1～5mm, height 1～5mm.
It highly is the projection 13 of 1～3mm that described wrapped belt 8 surfaces externally and internallies are established absolutely.
Technical scheme of the present invention is not limited to the restriction of above-mentioned specific embodiment, and the technology distortion that every technical scheme according to the present invention is made all falls within protection scope of the present invention.
Claims (6)
1. anti-mechanical shock three core fireproof power cables of 6～35KV, comprise single-core cable, it is characterized in that: described single-core cable is followed successively by wire, conductor shield, insulating barrier, insulation screen, copper strip shielding layer, steel wire reinforcing layer and copper strips layer from inside to outside, three single-core cable outsides are provided with wrapped belt three single-core cables and gap-like are tied up, three single-core cables and place, twining package tape lamellar spacing are provided with packing, and wrapped belt is followed successively by inner restrictive coating, steel-tape armouring layer and external sheath layer outward.
2. anti-mechanical shock three core fireproof power cables of 6～35KV according to claim 1 is characterized in that: described inner restrictive coating is the oxygen barrier the coat layer of power cable of fire retardant for the mixture by aluminium hydroxide and magnesium hydroxide.
3. anti-mechanical shock three core fireproof power cables of 6～35KV according to claim 1, it is characterized in that: described external sheath layer is low-smoke halogen-free polyolefin cable material.
4. anti-mechanical shock three core fireproof power cables of described 6～35KV according to claim 1, it is characterized in that: described steel wire reinforcing layer is that the spiral coiling diameter in the copper strip shielding layer outside is that 1.5-2mm, helix pitch are the wire of 1.5-2 times of diameter, described wire is the non-magnetic stainless steel silk, and non-magnetic stainless steel silk surface is provided with the high temperature resistant heat insulation material coating that is made of nanoceramic particles and carbonate compound.
5. anti-mechanical shock three core fireproof power cables of 6～35KV according to claim 1, it is characterized in that: described packing is hollow, and material is ceramic silicon rubber, and the surface is provided with the projection of interval 1～5mm, height 1～5mm.
6. anti-mechanical shock three core fireproof power cables of 6～35KV according to claim 1, it is characterized in that: it highly is the projection of 1～3mm that described wrapped belt surfaces externally and internally is provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012104434123A CN102903447A (en) | 2012-11-08 | 2012-11-08 | 6-35 KV mechanical impact resistance three-core fireproof power cable |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012104434123A CN102903447A (en) | 2012-11-08 | 2012-11-08 | 6-35 KV mechanical impact resistance three-core fireproof power cable |
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| CN102903447A true CN102903447A (en) | 2013-01-30 |
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| CN2012104434123A Pending CN102903447A (en) | 2012-11-08 | 2012-11-08 | 6-35 KV mechanical impact resistance three-core fireproof power cable |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103325481A (en) * | 2013-06-25 | 2013-09-25 | 江苏红峰电缆集团有限公司 | High-tensile multi-core rubber sleeve cable |
| CN104008792A (en) * | 2013-05-21 | 2014-08-27 | 远东电缆有限公司 | Novel medium-voltage fire-resistant cable and production process thereof |
| CN104318997A (en) * | 2014-11-07 | 2015-01-28 | 成都冠禹科技有限公司 | Low-smoke zero-halogen damp-proof fire-resistant tensile-resistant industrial cable |
| CN108364724A (en) * | 2018-01-20 | 2018-08-03 | 上海查尔斯光电科技有限公司 | A kind of harness |
| CN109938832A (en) * | 2019-04-22 | 2019-06-28 | 南京长城医疗设备有限公司 | A kind of high-performance semi-rigid penetration type microwave ablation antenna |
| CN111326997A (en) * | 2018-07-26 | 2020-06-23 | 杨国宝 | Three-core cable and cable head positioning device and using method thereof |
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| CN101593578A (en) * | 2009-07-03 | 2009-12-02 | 河北华通线缆集团有限公司 | Steel wire reinforced power cable |
| CN201681658U (en) * | 2010-04-28 | 2010-12-22 | 无锡市华美电缆有限公司 | Cross-linked polyethylene insulated steel wire armored medium-low voltage power cable |
| CN201689715U (en) * | 2010-06-09 | 2010-12-29 | 江苏荣宜电缆有限公司 | Copper-core polyvinyl chloride-insulated polyvinyl chloride jacket braided-shield control soft cable |
| CN201796646U (en) * | 2010-09-07 | 2011-04-13 | 绿宝电缆（集团）有限公司 | Cross-linked polyethylene insulated power cable for coal mines |
| CN201859687U (en) * | 2010-10-25 | 2011-06-08 | 宝胜科技创新股份有限公司 | High flame-retardant, fire-resistant and water tree-resistant medium voltage power cable |
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Patent Citations (5)
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| CN101593578A (en) * | 2009-07-03 | 2009-12-02 | 河北华通线缆集团有限公司 | Steel wire reinforced power cable |
| CN201681658U (en) * | 2010-04-28 | 2010-12-22 | 无锡市华美电缆有限公司 | Cross-linked polyethylene insulated steel wire armored medium-low voltage power cable |
| CN201689715U (en) * | 2010-06-09 | 2010-12-29 | 江苏荣宜电缆有限公司 | Copper-core polyvinyl chloride-insulated polyvinyl chloride jacket braided-shield control soft cable |
| CN201796646U (en) * | 2010-09-07 | 2011-04-13 | 绿宝电缆（集团）有限公司 | Cross-linked polyethylene insulated power cable for coal mines |
| CN201859687U (en) * | 2010-10-25 | 2011-06-08 | 宝胜科技创新股份有限公司 | High flame-retardant, fire-resistant and water tree-resistant medium voltage power cable |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104008792A (en) * | 2013-05-21 | 2014-08-27 | 远东电缆有限公司 | Novel medium-voltage fire-resistant cable and production process thereof |
| CN104008792B (en) * | 2013-05-21 | 2016-07-06 | 远东电缆有限公司 | A kind of production technology of Novel medium voltage fire-resisting cable |
| CN103325481A (en) * | 2013-06-25 | 2013-09-25 | 江苏红峰电缆集团有限公司 | High-tensile multi-core rubber sleeve cable |
| CN104318997A (en) * | 2014-11-07 | 2015-01-28 | 成都冠禹科技有限公司 | Low-smoke zero-halogen damp-proof fire-resistant tensile-resistant industrial cable |
| CN108364724A (en) * | 2018-01-20 | 2018-08-03 | 上海查尔斯光电科技有限公司 | A kind of harness |
| CN111326997A (en) * | 2018-07-26 | 2020-06-23 | 杨国宝 | Three-core cable and cable head positioning device and using method thereof |
| CN109938832A (en) * | 2019-04-22 | 2019-06-28 | 南京长城医疗设备有限公司 | A kind of high-performance semi-rigid penetration type microwave ablation antenna |
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Application publication date: 20130130 |