CN201402665Y - Medium and high voltage fire-resistant cables - Google Patents
Medium and high voltage fire-resistant cables Download PDFInfo
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- CN201402665Y CN201402665Y CN2009200806455U CN200920080645U CN201402665Y CN 201402665 Y CN201402665 Y CN 201402665Y CN 2009200806455 U CN2009200806455 U CN 2009200806455U CN 200920080645 U CN200920080645 U CN 200920080645U CN 201402665 Y CN201402665 Y CN 201402665Y
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- 230000009970 fire resistant effect Effects 0.000 title abstract description 22
- 239000010445 mica Substances 0.000 claims abstract description 27
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 27
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000003063 flame retardant Substances 0.000 claims abstract description 23
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 16
- 239000000945 filler Substances 0.000 claims abstract description 8
- 229920000098 polyolefin Polymers 0.000 claims description 12
- 239000000779 smoke Substances 0.000 claims description 12
- 229910000989 Alclad Inorganic materials 0.000 claims 1
- 229910045601 alloy Inorganic materials 0.000 claims 1
- 239000000956 alloy Substances 0.000 claims 1
- 229910000838 Al alloy Inorganic materials 0.000 abstract description 16
- 239000004945 silicone rubber Substances 0.000 abstract description 14
- 238000005065 mining Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 59
- 239000004745 nonwoven fabric Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 238000009413 insulation Methods 0.000 description 5
- 239000004020 conductor Substances 0.000 description 4
- 238000010070 extrusion (rubber) Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005253 cladding Methods 0.000 description 1
- 229920003020 cross-linked polyethylene Polymers 0.000 description 1
- 239000004703 cross-linked polyethylene Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920000307 polymer substrate Polymers 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables
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Abstract
本实用新型公开了一种中高压耐火电缆，旨在提供一种具有优良的电气性能和良好的耐火特性的特种中高压耐火电缆。电缆的线芯外依次包覆有云母带、包带、阻燃硅橡胶层、纵包铝合金带和护套；在线芯与云母带间设置阻燃填充料。此种电缆特别适合于高层建筑、地下铁道、地下街、大型电站及重要的工矿企业等与防火安全和消防救生有关的地方，在火焰燃烧情况下能够保持90分钟的安全运行。
The utility model discloses a medium and high voltage fire-resistant cable, aiming to provide a special medium and high-voltage fire-resistant cable with excellent electrical performance and good fire-resistant characteristics. The wire core of the cable is covered with mica tape, tape, flame retardant silicone rubber layer, longitudinally wrapped aluminum alloy tape and sheath in sequence; a flame retardant filler is set between the wire core and the mica tape. This kind of cable is especially suitable for high-rise buildings, underground railways, underground streets, large power stations, important industrial and mining enterprises and other places related to fire safety and fire rescue. It can maintain safe operation for 90 minutes under the condition of flame burning.
Description
技术领域 technical field
本实用新型涉及一种中高压电缆，特别是涉及一种中高压耐火电缆。The utility model relates to a medium and high voltage cable, in particular to a medium and high voltage fireproof cable.
背景技术 Background technique
通常使用在电压1KV及以下耐火电缆，采用的耐火结构是直接在导体外绕包云母带和采用铜芯铜护套氧化镁绝缘的方式。而6KV及以上中高压电缆，由于耐高电压的特殊要求，导体与绝缘之间必须有半导电屏蔽层，以达到均匀电场的作用，而绝缘及内外的半导电屏蔽，均与绝缘为同一种高分子基材，并为一次三复层共挤成型，极不承受高温。因此，上述耐火结构达不到6KV及以上高压电缆耐火要求。It is usually used in fire-resistant cables with a voltage of 1KV and below. The fire-resistant structure adopted is to wrap mica tape directly outside the conductor and use copper core copper sheath for magnesium oxide insulation. For medium and high voltage cables of 6KV and above, due to the special requirements of high voltage resistance, there must be a semi-conductive shielding layer between the conductor and the insulation to achieve a uniform electric field, and the insulation and the inner and outer semi-conductive shielding are the same as the insulation. Polymer substrate, and it is a three-layer co-extrusion molding, which is extremely resistant to high temperature. Therefore, the above-mentioned fire-resistant structure cannot meet the fire-resistant requirements of 6KV and above high-voltage cables.
中国专利公开了一种“中高压耐火电缆”(公开号CN200979814)，该实用新型主要是涉及一种6KV及以上中高压耐火电缆，该电缆的缆芯与外护套间有复合耐火层，该复合耐火层自内向外由隔热层、无机膨胀降温层、金属带包覆挡火层组成。该专利克服了传统低压耐火电缆的不足，但由于该电缆在缆芯与复合耐火层之间缺乏阻燃填充料且未采用云母带降温保护材料，因而耐火性能不够理想。、The Chinese patent discloses a "medium and high voltage fire-resistant cable" (publication number CN200979814). This utility model mainly relates to a medium and high voltage fire-resistant cable of 6KV and above. There is a composite fire-resistant layer between the cable core and the outer sheath of the cable. The composite refractory layer is composed of heat insulation layer, inorganic expansion and cooling layer, and metal belt-coated fire-resistant layer from the inside to the outside. This patent overcomes the shortcomings of traditional low-voltage fire-resistant cables, but because the cable lacks flame-retardant fillers between the cable core and the composite fire-resistant layer and does not use mica tape cooling protection materials, the fire-resistant performance is not ideal. ,
实用新型内容Utility model content
本实用新型的技术任务是针对以上不足之处，提供了一种具有优良的电气性能和良好的耐火特性的特种中高压耐火电缆。The technical task of this utility model is to provide a special medium and high voltage fire-resistant cable with excellent electrical performance and good fire-resistant characteristics for the above shortcomings.
本实用新型解决其技术问题所采用的技术方案是：The technical scheme that the utility model solves its technical problem adopts is:
一种中高压耐火电缆，其特征在于：线芯外依次包覆有云母带、包带、阻燃硅橡胶层、纵包铝合金带和护套；在线芯与云母带间设置阻燃填充料。A medium-high voltage fire-resistant cable, characterized in that: the wire core is sequentially coated with mica tape, wrapping tape, flame-retardant silicone rubber layer, longitudinally wrapped aluminum alloy tape and sheath; a flame-retardant filler is arranged between the wire core and the mica tape .
护套为低烟无卤聚烯烃层。Sheath is low-smoke halogen-free polyolefin layer.
线芯外绕包有两层云母带。The core is wrapped with two layers of mica tape.
本实用新型与现有技术相比具有以下优点：Compared with the prior art, the utility model has the following advantages:
1、本实用新型由于采用了云母带，更进一步在线芯与云母带之间有能够阻燃的填充料降温，因此能够降低线芯发热的温度，如果火焰燃烧到这一层，云母带遇火后生成不溶的坚硬壳体，使绝缘线芯不受到火焰影响，能在一定时间内继续安全输电。1. Due to the use of mica tape in this utility model, there is a flame-retardant filler between the wire core and the mica tape to cool down the temperature, so the heating temperature of the wire core can be reduced. If the flame burns to this layer, the mica tape will encounter fire. Finally, an insoluble hard shell is formed, so that the insulated wire core is not affected by the flame, and can continue to transmit electricity safely within a certain period of time.
2、本实用新型由于采用了纵包铝合金带作为档火层，能够防止火焰直接烧烤内层材料。2. Since the utility model adopts the longitudinally-wrapped aluminum alloy strip as the fire-stopping layer, it can prevent the flame from directly roasting the inner layer material.
此特种中高压电缆解决了中高压电缆电气性能与耐火特性之间的矛盾。该电缆不仅具有优良的电气性能，而且具有良好的耐火特性。This special medium and high voltage cable solves the contradiction between the electrical performance and fire resistance of medium and high voltage cables. The cable not only has excellent electrical performance, but also has good fire resistance.
特别适合于高层建筑、地下铁道、地下街、大型电站及重要的工矿企业等与防火安全和消防救生有关的地方，例如，消防设备及紧急向导灯等应急设施的供电线路。在火焰燃烧情况下能够保持90分钟的安全运行。It is especially suitable for high-rise buildings, underground railways, underground streets, large power stations, important industrial and mining enterprises and other places related to fire safety and fire-fighting and lifesaving, such as power supply lines for emergency facilities such as fire-fighting equipment and emergency guide lights. It can maintain safe operation for 90 minutes under the condition of flame burning.
附图说明 Description of drawings
下面结合附图和实施例对本实用新型作进一步说明。Below in conjunction with accompanying drawing and embodiment the utility model is further described.
附图1是中高压耐火电缆的截面结构示意图。Accompanying drawing 1 is the schematic cross-sectional structure diagram of medium and high voltage fireproof cables.
具体实施方式 Detailed ways
参照说明书附图对本实用新型的中高压耐火电缆作以下详细的说明。The medium and high voltage fire-resistant cable of the present invention will be described in detail below with reference to the accompanying drawings.
实施例1Example 1
一种中高压耐火电缆，由线芯、云母带7、无纺布层8、阻燃硅橡胶挤包9、纵包铝合金带10和氧指数≥38％的低烟无卤聚烯烃层11组成，在线芯外依次包覆有云母带7、无纺布层8、阻燃硅橡胶挤包9、纵包铝合金带10和氧指数≥38％的低烟无卤聚烯烃层11；在线芯与云母带7间设置阻燃填充料6。A medium and high voltage fire-resistant cable, consisting of wire core, mica tape 7, non-woven fabric layer 8, flame-retardant silicone rubber extruded wrap 9, longitudinally wrapped
线芯外双层重叠绕包云母带。无纺布层8外挤包一层阻燃硅橡胶层。阻燃硅橡胶层9外纵包一层铝合金带10。铝合金带10外挤包一层氧指数≥38％的低烟无卤聚烯烃层11。The core is double-layered and wrapped with mica tape. The non-woven fabric layer 8 is extruded and wrapped with a flame-retardant silicone rubber layer. A layer of
7为云母带降温保护材料，如果火焰燃烧到这一层，云母带遇火后生成不溶不熔的坚硬壳体，使绝缘线芯不受到火焰影响，能在一定时间内继续安全输电。9为阻燃硅橡胶材料，作为绝热层。10为纵包铝合金属带挡火层，防止火焰直接烧烤内层材料。7 is the mica tape cooling protection material, if the flame burns to this layer, the mica tape will form a hard shell that is insoluble and infusible after being exposed to fire, so that the insulated wire core will not be affected by the flame and can continue to transmit electricity safely within a certain period of time. 9 is flame-retardant silicon rubber material, as heat insulating layer. The 10th is that vertical cladding aluminum alloy belongs to band fire-stopping layer, prevents flame from directly roasting inner layer material.
实施例2Example 2
一种中高压耐火电缆，额定电压8.7/10千伏，由3根线芯、双层重叠绕包云母带7、双层重叠绕包无纺布层8、阻燃硅橡胶挤包9、纵包铝合金带10和低烟无卤聚烯烃层11组成，在线芯外依次包覆有云母带7、无纺布层8、阻燃硅橡胶挤包9、纵包铝合金带10和低烟无卤聚烯烃层11；在线芯与云母带7间设置阻燃填充料6。A medium and high voltage fire-resistant cable with a rated voltage of 8.7/10 kV, consisting of 3 wire cores, double-layer overlapping wrapping mica tape 7, double-layer overlapping wrapping non-woven fabric layer 8, flame-retardant silicone rubber extrusion wrapping 9, longitudinal Composed of aluminum
线芯外绕包有2层云母带。无纺布层8外挤包一层阻燃硅橡胶层。阻燃硅橡胶层9外纵包一层铝合金带10。铝合金带10外挤包一层氧指数≥38％的低烟无卤聚烯烃层11。The core is wrapped with 2 layers of mica tape. The non-woven fabric layer 8 is extruded and wrapped with a flame-retardant silicone rubber layer. A layer of
实施例3Example 3
一种中高压耐火电缆，由线芯、双层重叠绕包云母带7、双层重叠绕包无纺布层8、阻燃硅橡胶挤包9、纵包铝合金带10和低烟无卤聚烯烃层11组成，在线芯外依次包覆有云母带7、无纺布层8、阻燃硅橡胶挤包9、纵包铝合金带10和低烟无卤聚烯烃层11；在线芯与云母带7间设置阻燃填充料6。A medium and high voltage fire-resistant cable, which consists of a wire core, double-layer overlapping wrapping mica tape 7, double-layer overlapping wrapping non-woven fabric layer 8, flame-retardant silicone rubber extrusion wrapping 9, longitudinal wrapping
其中线芯由绞合紧压导体层1、导体屏蔽层2、交联聚乙烯绝缘层3、绝缘屏蔽层4和金属屏蔽层5组成，金属屏蔽层5采用单层铜带重叠绕包。The wire core is composed of a twisted and pressed conductor layer 1, a
线芯外绕包有2层云母带。无纺布层8外挤包一层阻燃硅橡胶层。阻燃硅橡胶层9外纵包一层铝合金带10。铝合金带10外挤包一层氧指数≥38％的低烟无卤聚烯烃层11。The core is wrapped with 2 layers of mica tape. The non-woven fabric layer 8 is extruded and wrapped with a flame-retardant silicone rubber layer. A layer of
上述实施例中的线芯可以为1根、2根或多根。所述无纺布层可以采用其他材料代替。所述氧指数≥38％的低烟无卤聚烯烃层11也可采用其他材料代替。这样的变换均落在本实用新型的保护范围之内。The wire cores in the above embodiments may be one, two or more. The non-woven fabric layer can be replaced by other materials. The low-smoke halogen-
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| CN2009200806455U CN201402665Y (en) | 2009-05-06 | 2009-05-06 | Medium and high voltage fire-resistant cables |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103000278A (en) * | 2012-12-17 | 2013-03-27 | 无锡江南电缆有限公司 | Flexible fireproof multiple-core cable |
| CN103198891A (en) * | 2012-01-05 | 2013-07-10 | 尼克桑斯公司 | Power and/or communication cable capable of preventing fire propagation |
| USD868701S1 (en) | 2014-08-07 | 2019-12-03 | Henkel Ag & Co. Kgaa | Overhead transmission conductor cable |
-
2009
- 2009-05-06 CN CN2009200806455U patent/CN201402665Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103198891A (en) * | 2012-01-05 | 2013-07-10 | 尼克桑斯公司 | Power and/or communication cable capable of preventing fire propagation |
| CN103198891B (en) * | 2012-01-05 | 2019-01-15 | 尼克桑斯公司 | Power and/or communication cable capable of preventing fire propagation |
| CN103000278A (en) * | 2012-12-17 | 2013-03-27 | 无锡江南电缆有限公司 | Flexible fireproof multiple-core cable |
| USD868701S1 (en) | 2014-08-07 | 2019-12-03 | Henkel Ag & Co. Kgaa | Overhead transmission conductor cable |
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