CN202796160U - Novel non-sheathed multi-core fireproof electric cable - Google Patents
Novel non-sheathed multi-core fireproof electric cable Download PDFInfo
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- CN202796160U CN202796160U CN201220356862.4U CN201220356862U CN202796160U CN 202796160 U CN202796160 U CN 202796160U CN 201220356862 U CN201220356862 U CN 201220356862U CN 202796160 U CN202796160 U CN 202796160U
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- 230000009970 fire resistant effect Effects 0.000 claims abstract description 27
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 25
- 229910052802 copper Inorganic materials 0.000 claims abstract description 25
- 239000010949 copper Substances 0.000 claims abstract description 25
- 239000004020 conductor Substances 0.000 claims abstract description 18
- 239000000945 filler Substances 0.000 claims abstract description 9
- 238000009413 insulation Methods 0.000 claims description 17
- 239000002131 composite material Substances 0.000 claims description 16
- 239000000919 ceramic Substances 0.000 claims description 7
- 230000004888 barrier function Effects 0.000 claims 3
- 241000206672 Gelidium Species 0.000 claims 1
- 238000004049 embossing Methods 0.000 claims 1
- 108010059642 isinglass Proteins 0.000 claims 1
- 229910052627 muscovite Inorganic materials 0.000 claims 1
- 238000012856 packing Methods 0.000 claims 1
- 238000005452 bending Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 7
- 239000010445 mica Substances 0.000 abstract description 6
- 229910052618 mica group Inorganic materials 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 3
- 230000002349 favourable effect Effects 0.000 abstract 1
- 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 group 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 description 8
- 239000003063 flame retardant Substances 0.000 description 7
- 239000000395 magnesium oxide Substances 0.000 description 7
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 7
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 7
- 229910052500 inorganic mineral Inorganic materials 0.000 description 6
- 239000011707 mineral Substances 0.000 description 6
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000011084 recovery 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
Description
技术领域 technical field
本实用新型涉及一种电缆，尤其是涉及一种无护套新型多芯防火电缆。 The utility model relates to a cable, in particular to a novel multi-core fireproof cable without a sheath.
背景技术 Background technique
众所周知，目前国内高要求防火电缆采用的是氧化镁矿物绝缘平滑铜护套结构电缆，该电缆加工时采用的是往铜护套中添加氧化镁然后通过拉拔的工艺，因此电缆单根长度一般都比较短，只有一两百米，而且电缆的弯曲性能差，敷设安装非常困难。氧化镁易吸潮，单根长度有限，不适合移动、振动场所。同时该结构电缆项目投资非常巨大，而且成本回收周期长，电缆出售价格高。总之，采用氧化镁作为绝缘材料的矿物绝缘电缆有以下不足之处：①电缆加工废品率高，生产成本高；②氧化镁易吸潮，单根长度有限，不适合移动、振动场所；③弯曲性能差，敷设安装非常困难。 As we all know, the current domestic high-demand fireproof cables use magnesium oxide mineral insulated smooth copper sheathed cables. The cable is processed by adding magnesium oxide to the copper sheath and then drawing it. Therefore, the length of a single cable is generally They are all relatively short, only one or two hundred meters, and the bending performance of the cables is poor, so it is very difficult to lay and install them. Magnesium oxide is easy to absorb moisture, and the length of a single root is limited, so it is not suitable for moving and vibrating places. At the same time, the investment in the structural cable project is very huge, and the cost recovery period is long, and the selling price of the cable is high. In short, mineral insulated cables using magnesium oxide as insulating material have the following disadvantages: ① high cable processing scrap rate, high production costs; ② magnesium oxide is easy to absorb moisture, and the length of a single cable is limited, so it is not suitable for moving and vibrating places; ③ bending Poor performance, laying and installation is very difficult.
发明内容 Contents of the invention
本实用新型主要是针对现有技术所存在的上述技术问题，提供一种有效解决了单芯矿物绝缘电缆中氧化镁易吸潮，单根长度有限等问题，既能保证单芯矿物绝缘电缆相同的防火功能，又能做长和敷设安装方便,弯曲性能好的无护套新型多芯防火电缆。 The utility model is mainly aimed at the above-mentioned technical problems existing in the prior art, and provides a method that effectively solves the problems that magnesium oxide in single-core mineral insulated cables is easy to absorb moisture, and the length of a single cable is limited, and can ensure that the single-core mineral insulated cables are the same It has excellent fire protection function, and can be made long, easy to lay and install, and has good bending performance, a new type of non-sheathed multi-core fireproof cable.
本实用新型的上述技术问题主要是通过下述技术方案得以解决的：一种无护套新型多芯防火电缆，包括多根铜导体，多根铜导体外均设有绝缘层，多根铜导体之间的空隙内设有填充物，其特征在于所述的绝缘层为绕包在铜导体上的耐火云母带，绝缘层外套设有耐火隔热层，所述的耐火隔热层外设有防火层，所述的防火层与耐火隔热层之间套设有成缆包带隔热层。本实用新型有效解决了单芯矿物绝缘电缆中氧化镁易吸潮，单根长度有限等问题，既能保证单芯矿物绝缘电缆相同的防火功能，又能做长和敷设安装方便,弯曲性能好，适合移动、振动场所，投资又低比矿物绝缘电缆节约成本，加工工艺简单，通过试验，电缆在950℃～1000℃火焰温度下，燃烧180min（比普通耐火电缆时间长一倍），具有十分良好的耐火和阻燃功能，燃烧时通电缆的额定电压，没有一个熔断器或断路器断开；导体不断，即灯泡不熄灭。 The above-mentioned technical problems of the utility model are mainly solved by the following technical solutions: a new multi-core fireproof cable without a sheath, including a plurality of copper conductors, an insulating layer is provided outside the plurality of copper conductors, and a plurality of copper conductors There is a filler in the gap between them, and it is characterized in that the insulating layer is a fire-resistant mica tape wrapped on the copper conductor, and the outer layer of the insulating layer is provided with a fire-resistant and heat-insulating layer, and the fire-resistant and heat-insulating layer is provided with A fire-proof layer, a cabled tape heat-insulation layer is set between the fire-proof layer and the fire-resistant heat-insulation layer. The utility model effectively solves the problems that magnesium oxide in the single-core mineral insulated cable is easy to absorb moisture, and the length of the single cable is limited. , suitable for moving and vibrating places, low investment and cost saving compared with mineral insulated cables, simple processing technology, passed the test, the cable burns for 180 minutes at a flame temperature of 950 ° C ~ 1000 ° C (twice as long as ordinary fire-resistant cables), and has a very high performance. Good fire resistance and flame retardant function, the rated voltage of the cable is passed through when burning, and none of the fuses or circuit breakers are disconnected; the conductor is continuous, that is, the bulb does not go out.
作为优选，所述的耐火隔热层为采用陶瓷化防火耐火复合带制成复合耐火隔热层。用陶瓷化防火耐火复合带做为耐火隔热层，有效地提高了电缆的隔热和防火效果。 Preferably, the fire-resistant and heat-insulating layer is a composite fire-resistant and heat-insulating layer made of ceramic fire-resistant and refractory composite tape. The ceramicized fire-resistant and refractory composite tape is used as the fire-resistant and heat-insulating layer, which effectively improves the heat-insulation and fire-proof effects of the cable.
作为优选，所述的填充物为高阻燃环保型填充绳。空隙采用高阻燃环保型填充绳，减少空气提高阻燃防火性能，保证了其多芯电缆的防火隔热效果。 Preferably, the filler is a highly flame-retardant and environment-friendly filler rope. The gap is filled with high flame-retardant and environmentally friendly filling rope, which reduces the air and improves the flame-retardant and fire-proof performance, ensuring the fire-proof and heat-insulating effect of its multi-core cable.
作为优选，所述的成缆包带隔热层为陶瓷化防火耐火复合带。采用陶瓷化防火耐火复合带做为缆芯外的成缆包带隔热层，防火隔热效果极佳。 As a preference, the heat insulation layer of the cabled tape is a ceramicized fireproof and refractory composite tape. The ceramic fireproof and refractory composite tape is used as the heat insulation layer of the cabled tape outside the cable core, and the fireproof and heat insulation effect is excellent.
作为优选，所述的防火层为轧纹铜护套。采用轧纹铜护套，既防火又能有效提高电缆弯曲性能。 Preferably, the fireproof layer is a corrugated copper sheath. The corrugated copper sheath is used, which is not only fireproof but also can effectively improve the bending performance of the cable.
因此，本实用新型具有防火性能好、安装方便、弯曲性能好、加工工艺简单、耐火阻燃效果好、节约成本等特点。 Therefore, the utility model has the characteristics of good fireproof performance, convenient installation, good bending performance, simple processing technology, good fire-resistant and flame-retardant effect, cost saving and the like.
附图说明 Description of drawings
附图1是本实用新型的一种结构示意图。 Accompanying drawing 1 is a kind of structural representation of the utility model.
具体实施方式 Detailed ways
下面通过实施例，并结合附图，对本实用新型的技术方案作进一步具体的说明。 The technical solutions of the present utility model will be further specifically described below through the embodiments and in conjunction with the accompanying drawings.
实施例1： Example 1:
如说明书附图1所示，一种无护套新型多芯防火电缆，包括多根铜导体1，多根铜导体外均设有绝缘层2，多根铜导体之间的空隙内设有填充物4，绝缘层2为绕包在铜导体上的耐火云母带，绝缘层外套设有耐火隔热层3，耐火隔热层3外设有防火层6，防火层6与耐火隔热层3之间套设有成缆包带隔热层5。耐火隔热层3为采用陶瓷化防火耐火复合带制成复合耐火隔热层。填充物4为高阻燃环保型填充绳。成缆包带隔热层5为陶瓷化防火耐火复合带。防火层6为轧纹铜护套。 As shown in Figure 1 of the specification, a new type of multi-core fireproof cable without a sheath includes a plurality of copper conductors 1, an insulating layer 2 is provided outside the plurality of copper conductors, and a filler is provided in the gaps between the plurality of copper conductors. 4, the insulation layer 2 is a fire-resistant mica tape wrapped on the copper conductor, the insulation layer is covered with a fire-resistant and heat-insulating layer 3, and the fire-resistant and heat-insulating layer 3 is provided with a fire-proof layer 6, and the fire-proof layer 6 and the fire-resistant and heat-insulating layer 3 A heat-insulating layer 5 of cabled tapes is sleeved between them. The fire-resistant and heat-insulating layer 3 is a composite fire-resistant and heat-insulating layer made of a ceramicized fire-resistant and refractory composite tape. The filler 4 is a highly flame-retardant and environment-friendly filler rope. The heat-insulating layer 5 of the cabled tape is a ceramicized fireproof and refractory composite tape. The fireproof layer 6 is a corrugated copper sheath.
在铜导体上缠绕耐火云母带作为电缆的绝缘层，并用陶瓷化防火耐火复合带做为复合耐火隔热层，提高电缆的隔热和防火效果，采用轧纹铜护套，提高电缆的防火和弯曲性能。多芯成缆，空隙采用高阻燃环保型填充绳（减少空气提高阻燃防火性能），并再次采用陶瓷化防火耐火复合带做为缆芯外的成缆包带隔热层，保证了其多芯电缆的防火隔热效果。常温下耐火云母带的工频介电强度为10MV/m，体积电阻率≥1.0×1010Ω·m；陶瓷化防火耐火复合带工频介电强度为36MV/mm，体积电阻率≥1.0×1012Ω·m，最高可耐温达3000℃；铜的熔点为1083℃所以在其温度不超过1000℃时，绝大部分场所是不会因熔化或燃烧而解体的，更不会传播火种。本实用新型性能与常规电缆性能保持一致。在超过1000℃在火焰的环境下，即使外面铜护套熔化后，里面的陶瓷化防火耐火复合带会迅速膨胀，形成致密的多孔碳层，起到良好的耐火隔热作用；确保里面的云母带在振动时也不会破损，保证了其绝缘性。采用上述结构，当电缆在火焰环境下，能迅速隔热、隔氧、减缓热的传导，有效保护了线芯正常供电。 Wrap fire-resistant mica tape on the copper conductor as the insulation layer of the cable, and use ceramic fire-resistant and refractory composite tape as the composite fire-resistant heat insulation layer to improve the heat insulation and fireproof effect of the cable. bending properties. Multi-core cabling, high flame-retardant and environmentally friendly filling rope is used in the gap (reduce air to improve flame-retardant and fire-resistant performance), and ceramic fire-resistant and refractory composite tape is used as the heat-insulating layer of the cabled tape outside the cable core to ensure its Fire and heat insulation effect of multi-core cables. The power frequency dielectric strength of the refractory mica tape at room temperature is 10MV/m, and the volume resistivity is ≥1.0×1010Ω·m; the power frequency dielectric strength of the ceramic fireproof and refractory composite tape is 36MV/mm, and the volume resistivity is ≥1.0×1012Ω·m m, the highest temperature resistance is 3000°C; the melting point of copper is 1083°C, so when the temperature does not exceed 1000°C, most places will not disintegrate due to melting or burning, let alone spread fire. The performance of the utility model is consistent with that of conventional cables. In the flame environment of more than 1000 ℃, even after the outer copper sheath is melted, the ceramicized fireproof and refractory composite tape inside will expand rapidly to form a dense porous carbon layer, which plays a good role in fire resistance and heat insulation; ensure that the mica inside The belt will not be damaged even when vibrating, ensuring its insulation. With the above-mentioned structure, when the cable is in a flame environment, it can quickly insulate heat, oxygen, and slow down heat conduction, effectively protecting the normal power supply of the wire core.
应理解，该实施例仅用于说明本实用新型而不用于限制本实用新型的范围。此外应理解，在阅读了本实用新型讲授的内容之后，本领域技术人员可以对本实用新型作各种改动或修改，这些等价形式同样落于本申请所附权利要求书所限定的范围。 It should be understood that this embodiment is only used to illustrate the utility model but not to limit the scope of the utility model. In addition, it should be understood that after reading the content taught by the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by the appended claims of the application.
Claims (5)
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| CN201220356862.4U CN202796160U (en) | 2012-07-23 | 2012-07-23 | Novel non-sheathed multi-core fireproof electric cable |
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| CN201220356862.4U CN202796160U (en) | 2012-07-23 | 2012-07-23 | Novel non-sheathed multi-core fireproof electric cable |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103198892A (en) * | 2013-04-25 | 2013-07-10 | 桂林国际电线电缆有限责任公司 | Novel composite flame-retardant cable |
| CN103903803A (en) * | 2014-03-04 | 2014-07-02 | 江苏珠影特种电缆有限公司 | Three-core medium-pressure waterproof and fire-resistant cable |
| CN103903795A (en) * | 2014-04-04 | 2014-07-02 | 江苏中辰电缆有限公司 | Fireproof power cable |
| CN104464899A (en) * | 2013-09-24 | 2015-03-25 | 江苏宝安电缆有限公司 | Ceramic fireproof flexible cable |
| CN115732124A (en) * | 2021-08-30 | 2023-03-03 | 海悦电缆制造有限公司 | High-performance insulated safety wire and cable |
-
2012
- 2012-07-23 CN CN201220356862.4U patent/CN202796160U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103198892A (en) * | 2013-04-25 | 2013-07-10 | 桂林国际电线电缆有限责任公司 | Novel composite flame-retardant cable |
| CN104464899A (en) * | 2013-09-24 | 2015-03-25 | 江苏宝安电缆有限公司 | Ceramic fireproof flexible cable |
| CN103903803A (en) * | 2014-03-04 | 2014-07-02 | 江苏珠影特种电缆有限公司 | Three-core medium-pressure waterproof and fire-resistant cable |
| CN103903795A (en) * | 2014-04-04 | 2014-07-02 | 江苏中辰电缆有限公司 | Fireproof power cable |
| CN115732124A (en) * | 2021-08-30 | 2023-03-03 | 海悦电缆制造有限公司 | High-performance insulated safety wire and cable |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG WANMA CO., LTD. Free format text: FORMER NAME: ZHEJIANG WANMA CABLE CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 311305 Ling'an Economic Development Zone, Zhejiang Province, South Ring Road, No. 88, No. Patentee after: ZHEJIANG WANMA CO., LTD. Address before: 311305 Ling'an Economic Development Zone, Zhejiang Province, South Ring Road, No. 88, No. Patentee before: Zhejiang Wanma Cable Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20160723 |
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| CF01 | Termination of patent right due to non-payment of annual fee |