CN202711794U - Green and environment-friendly digital symmetrical cable - Google Patents
Green and environment-friendly digital symmetrical cable Download PDFInfo
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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
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Abstract
本实用新型提供一种绿色环保数字对称电缆，包括由中心向外依次设置的对绞线组、对绞屏蔽层、内护套层、总屏蔽层和外护套层，所述对绞线组包括线芯和绝缘层，所述对绞线组为两根线芯绞合而成，每根所述线芯外分别包裹有绝缘层，所述线芯为镀锡铜芯，所述绝缘层为交联聚乙烯绝缘层，所述对绞屏蔽层为镀锡铜丝编织对绞屏蔽层，所述内护套层为聚乙烯内护套层，所述总屏蔽层为纵包铝箔总屏蔽层，所述外护套层为低烟无卤阻燃聚烯烃外护套层；该种绿色环保数字对称电缆不含铅、镉、六价铬等重金属，不含有溴系阻燃剂，不产生有害的卤素气体，不产生腐蚀性气体，使电缆的毒性指数≤1，燃烧时的发烟量很小，燃烧时的透光率≥75%，且不污染土壤。
The utility model provides a green and environment-friendly digital symmetrical cable, which comprises a twisted wire group, a paired shielding layer, an inner sheath layer, a total shielding layer and an outer sheath layer arranged sequentially from the center to the outside, and the twisted wire group Including a wire core and an insulating layer, the twisted pair group is formed by twisting two wire cores, each of the wire cores is wrapped with an insulating layer, the wire core is a tinned copper core, and the insulating layer It is a cross-linked polyethylene insulating layer, the twisted pair shielding layer is a tinned copper wire braided twisted pair shielding layer, the inner sheath layer is a polyethylene inner sheath layer, and the overall shielding layer is a longitudinally wrapped aluminum foil overall shielding layer Layer, the outer sheath layer is a low-smoke halogen-free flame-retardant polyolefin outer sheath layer; this kind of green environmental protection digital symmetrical cable does not contain heavy metals such as lead, cadmium, and hexavalent chromium, does not contain brominated flame retardants, and does not contain Harmful halogen gas is produced, no corrosive gas is produced, the toxicity index of the cable is ≤1, the amount of smoke generated during combustion is very small, the light transmittance during combustion is ≥75%, and it does not pollute the soil.
Description
技术领域 technical field
本实用新型涉及一种数字对称电缆，尤其涉及一种绿色环保数字对称电缆。 The utility model relates to a digital symmetrical cable, in particular to a green and environmentally friendly digital symmetrical cable.
背景技术 Background technique
普通的电缆一般以聚氯乙烯等含氯聚合物作绝缘和护套。聚氯乙烯电缆在发生火灾事故时会产生大量烟雾，析出氯化氢等有毒气体，除对人的生命构成直接威胁外，还会溶解形成稀盐酸附着在各种电器设备及建筑物的钢结构上，严重降低设备的安全性及建筑物的使用寿命，特别是当烟气进入通讯技术设备和数据技术设备后，将会使它们丧失正常功能，甚至引发“二次灾害”。而普通的环保电缆是指它所用的聚氯乙烯护套料不含铅和镉两种有害元素，但是普通的环保电缆的环保性能仍不理想，其在燃烧时的发烟量与毒性指数仍较高，日渐不能满足环保要求。同时，数字对称电缆的屏蔽性能也有待改善，应当保证电缆的屏蔽效果和传输性能。 Ordinary cables are generally insulated and sheathed with chlorine-containing polymers such as polyvinyl chloride. In the event of a fire accident, polyvinyl chloride cables will produce a large amount of smoke and precipitate toxic gases such as hydrogen chloride. In addition to posing a direct threat to human life, they will also dissolve and form dilute hydrochloric acid to adhere to various electrical equipment and steel structures of buildings. Seriously reduce the safety of equipment and the service life of buildings, especially when smoke enters communication technology equipment and data technology equipment, it will cause them to lose their normal functions, and even cause "secondary disasters". The ordinary environmental protection cable means that the PVC sheath material it uses does not contain two harmful elements, lead and cadmium, but the environmental protection performance of the ordinary environmental protection cable is still not ideal, and its smoke generation and toxicity index are still low when it is burned. Higher, increasingly unable to meet environmental protection requirements. At the same time, the shielding performance of the digital symmetrical cable needs to be improved, and the shielding effect and transmission performance of the cable should be guaranteed.
实用新型内容 Utility model content
本实用新型的目的是提供一种绿色环保数字对称电缆解决电缆的环保性能仍不理想，其在燃烧时的发烟量与毒性指数仍较高，日渐不能满足环保要求的问题。 The purpose of this utility model is to provide a green environmental protection digital symmetrical cable to solve the problem that the environmental protection performance of the cable is still not ideal, and its smoke generation and toxicity index are still high during combustion, which cannot meet the environmental protection requirements day by day.
本实用新型的技术解决方案是： The technical solution of the utility model is:
一种绿色环保数字对称电缆，包括由中心向外依次设置的对绞线组、对绞屏蔽层、内护套层、总屏蔽层和外护套层，所述对绞线组包括线芯和绝缘层，所述对绞线组为两根线芯绞合而成，每根所述线芯外分别包裹有绝缘层，所述线芯为镀锡铜芯，所述绝缘层为交联聚乙烯绝缘层，所述对绞屏蔽层为镀锡铜丝编织对绞屏蔽层，所述内护套层为聚乙烯内护套层，所述总屏蔽层为纵包铝箔总屏蔽层，所述外护套层为低烟无卤阻燃聚烯烃外护套层。 A green environment-friendly digital symmetrical cable, including a paired wire group, a paired shielding layer, an inner sheath layer, a total shielding layer and an outer sheath layer arranged in sequence from the center to the outside, the paired wire group includes a core and a Insulation layer, the twisted pair group is formed by twisting two wire cores, each of the wire cores is wrapped with an insulation layer, the wire core is a tinned copper core, and the insulation layer is cross-linked polymer The ethylene insulation layer, the twisted pair shielding layer is a tinned copper wire braided pair twisted shielding layer, the inner sheath layer is a polyethylene inner sheath layer, the overall shielding layer is a longitudinally wrapped aluminum foil overall shielding layer, the The outer sheath layer is a low-smoke halogen-free flame-retardant polyolefin outer sheath layer.
进一步改进在于：所述对绞线组的数量为四个。 A further improvement is that: the number of the twisted wire groups is four.
进一步改进在于：所述对绞屏蔽层与所述内护套层间填充有玻璃纤维丝。 A further improvement is that glass fiber filaments are filled between the paired shielding layer and the inner sheath layer.
本实用新型一种绿色环保数字对称电缆所有的绝缘材料与护套材料均为无毒无害、且燃烧时的发烟量很小的绿色环保型材料，以此，绝缘层采用挤包交联聚乙烯，内护套层采用聚乙烯，外护套层采用挤包低烟无卤阻燃聚烯烃外护套，保证电缆具有优异的阻燃性能、环保性能，保证该种绿色环保数字对称电缆不含铅、镉、汞、六价铬等重金属，不含有溴系阻燃剂，不产生有害的卤素气体，不产生腐蚀性气体，使电缆的毒性指数≤1，燃烧时的发烟量很小，燃烧时的透光率≥75%，且不污染土壤。该种绿色环保数字对称电缆的每个对绞线组采用单独的对绞屏蔽层，对绞屏蔽层采用镀锡铜丝编织屏蔽，由于金属屏蔽层的集肤效应及反射和吸收作用，可以更好地分隔周围的电磁场和减少单独屏蔽对线之间或四对线之间的串音，为每个线对提供单独的铝箔屏蔽，可消除线对之间的串音，并可消除和减少环境的电气干扰，提高电磁兼容性，以保证屏蔽效果和传输性能。 The utility model is a green and environment-friendly digital symmetrical cable. All insulating materials and sheath materials are green and environment-friendly materials that are non-toxic and harmless, and have a small amount of smoke when burning. Therefore, the insulation layer is cross-linked by extrusion Polyethylene, the inner sheath layer is made of polyethylene, and the outer sheath layer is made of extruded low-smoke halogen-free flame-retardant polyolefin outer sheath to ensure that the cable has excellent flame-retardant performance and environmental protection performance, and this kind of green and environmentally friendly digital symmetrical cable Does not contain lead, cadmium, mercury, hexavalent chromium and other heavy metals, does not contain brominated flame retardants, does not produce harmful halogen gases, does not produce corrosive gases, makes the toxicity index of the cable ≤ 1, and produces very little smoke when burning Small, light transmittance ≥ 75% when burning, and does not pollute the soil. Each twisted pair group of this kind of green environmental protection digital symmetrical cable adopts a separate twisted shielding layer, and the twisted shielding layer adopts tinned copper wire braided shielding, due to the skin effect and reflection and absorption of the metal shielding layer, it can be more Good separation of the surrounding electromagnetic field and reduction of crosstalk between individually shielded pairs or between four pairs of wires, providing individual aluminum foil shielding for each pair of wires, which can eliminate crosstalk between wire pairs, and can eliminate and reduce the environment Electrical interference, improve electromagnetic compatibility, to ensure shielding effect and transmission performance.
该种绿色环保数字对称电缆，在对绞屏蔽层与内护套层间填充有玻璃纤维丝，可以在保证电缆圆整性的同时稳定电缆内部结构，玻璃纤维丝具有不燃性，以此不会产生有害污染物质，从而在一定程度上避免了对环境的危害。 This green and environmentally friendly digital symmetrical cable is filled with glass fiber filaments between the twisted shielding layer and the inner sheath layer, which can ensure the roundness of the cable and stabilize the internal structure of the cable. Harmful pollutants are produced, thereby avoiding the harm to the environment to a certain extent.
本实用新型的有益效果是：本实用新型一种绿色环保数字对称电缆具有优异的阻燃性能、环保性能，该种绿色环保数字对称电缆不含铅、镉、汞、六价铬等重金属，不含有溴系阻燃剂，不产生有害的卤素气体，不产生腐蚀性气体，使电缆的毒性指数≤1，燃烧时的发烟量很小，燃烧时的透光率≥75%，且不污染土壤。 The beneficial effects of the utility model are: a green and environmentally friendly digital symmetrical cable of the utility model has excellent flame-retardant performance and environmental protection performance. The green and environmentally friendly digital symmetrical cable does not contain heavy metals such as lead, cadmium, mercury, and hexavalent chromium. Contains brominated flame retardant, does not produce harmful halogen gas, does not produce corrosive gas, makes the toxicity index of the cable ≤1, the amount of smoke generated during combustion is very small, the light transmittance during combustion is ≥75%, and it does not pollute soil.
附图说明 Description of drawings
图1是本实用新型实施例的结构示意图； Figure 1 is a schematic structural view of an embodiment of the utility model;
其中：1-对绞屏蔽层，2-内护套层，3-总屏蔽层，4-外护套层，5-线芯，6-绝缘层，7-玻璃纤维丝。 Among them: 1-pair shielding layer, 2-inner sheath layer, 3-general shielding layer, 4-outer sheath layer, 5-wire core, 6-insulation layer, 7-glass fiber wire. the
具体实施方式 Detailed ways
下面结合附图详细说明本实用新型的优选实施例。 Preferred embodiments of the present utility model will be described in detail below in conjunction with the accompanying drawings.
如图1所示，本实施例提供一种绿色环保数字对称电缆，包括由中心向外依次设置的对绞线组、对绞屏蔽层1、内护套层2、总屏蔽层3和外护套层4，所述对绞线组包括线芯5和绝缘层6，所述对绞线组为两根线芯5绞合而成，每根所述线芯5外分别包裹有绝缘层6，所述线芯5为镀锡铜芯，所述绝缘层6为交联聚乙烯绝缘层，所述对绞屏蔽层1为镀锡铜丝编织对绞屏蔽层，所述内护套层2为聚乙烯内护套层，所述总屏蔽层3为纵包铝箔总屏蔽层，所述外护套层4为低烟无卤阻燃聚烯烃外护套层，所述对绞线组的数量为四个，所述对绞屏蔽层1与所述内护套层2间填充有玻璃纤维丝7。 As shown in Figure 1, this embodiment provides a green and environmentally friendly digital symmetrical cable, including a pair of twisted wire groups, a twisted shielding layer 1, an inner sheath layer 2, a total shielding layer 3 and an outer sheathing layer arranged in sequence from the center to the outside. The sleeve layer 4, the twisted pair group includes a wire core 5 and an insulating layer 6, the paired twisted wire group is formed by twisting two wire cores 5, and each of the wire cores 5 is wrapped with an insulating layer 6 , the core 5 is a tinned copper core, the insulating layer 6 is a cross-linked polyethylene insulating layer, the twisted shielding layer 1 is a tinned copper wire braided twisted shielding layer, and the inner sheath layer 2 It is a polyethylene inner sheath layer, the overall shielding layer 3 is a longitudinally wrapped aluminum foil overall shielding layer, the outer sheath layer 4 is a low-smoke, halogen-free, flame-retardant polyolefin outer sheath layer, and the twisted pair group The number is four, and glass fiber filaments 7 are filled between the paired shielding layer 1 and the inner sheath layer 2 .
本实施例一种绿色环保数字对称电缆所有的绝缘材料与护套材料均为无毒无害、且燃烧时的发烟量很小的绿色环保型材料，以此，绝缘层6采用挤包交联聚乙烯，内护套层2采用聚乙烯，外护套层4采用挤包低烟无卤阻燃聚烯烃外护套，保证电缆具有优异的阻燃性能、环保性能，保证该种绿色环保数字对称电缆不含铅、镉、汞、六价铬等重金属，不含有溴系阻燃剂，不产生有害的卤素气体，不产生腐蚀性气体，使电缆的毒性指数≤1，燃烧时的发烟量很小，燃烧时的透光率≥75%，且不污染土壤。该种绿色环保数字对称电缆的每个对绞线组采用单独的对绞屏蔽层1，对绞屏蔽层1采用镀锡铜丝编织屏蔽，由于金属屏蔽层的集肤效应及反射和吸收作用，可以更好地分隔周围的电磁场和减少单独屏蔽对线之间或四对线之间的串音，为每个线对提供单独的铝箔屏蔽，可消除线对之间的串音，并可消除和减少环境的电气干扰，提高电磁兼容性，以保证屏蔽效果和传输性能。 In this embodiment, all insulating materials and sheath materials of a green and environmentally friendly digital symmetrical cable are green and environmentally friendly materials that are non-toxic and harmless, and have a small amount of smoke when burned. Polyethylene, the inner sheath layer 2 is made of polyethylene, and the outer sheath layer 4 is made of extruded low-smoke halogen-free flame-retardant polyolefin outer sheath to ensure that the cable has excellent flame-retardant performance and environmental protection performance, and this kind of green environmental protection The digital symmetrical cable does not contain heavy metals such as lead, cadmium, mercury, and hexavalent chromium, does not contain brominated flame retardants, does not produce harmful halogen gases, and does not produce corrosive gases, so that the toxicity index of the cable is ≤ 1, and the emission when burning The amount of smoke is very small, the light transmittance when burning is ≥75%, and it does not pollute the soil. Each twisted pair group of this kind of green environmental protection digital symmetrical cable adopts a separate twisted shielding layer 1, and the twisted shielding layer 1 adopts tinned copper wire braided shielding, due to the skin effect, reflection and absorption of the metal shielding layer, It can better separate the surrounding electromagnetic field and reduce crosstalk between individually shielded pairs or between four pairs of wires, providing individual aluminum foil shielding for each pair of wires, which can eliminate crosstalk between wire pairs, and can eliminate and Reduce the electrical interference of the environment and improve electromagnetic compatibility to ensure the shielding effect and transmission performance.
该种绿色环保数字对称电缆，在对绞屏蔽层1与内护套层2间填充有玻璃纤维丝，可以在保证电缆圆整性的同时稳定电缆内部结构，玻璃纤维丝具有不燃性，以此不会产生有害污染物质，从而在一定程度上避免了对环境的危害。 This kind of green environmental protection digital symmetrical cable is filled with glass fiber filaments between the twisted shielding layer 1 and the inner sheath layer 2, which can ensure the roundness of the cable and stabilize the internal structure of the cable. The glass fiber filaments are non-combustible. Harmful pollutants will not be produced, thus avoiding the harm to the environment to a certain extent.
本实施例的有益效果是：本实施例一种绿色环保数字对称电缆具有优异的阻燃性能、环保性能，该种绿色环保数字对称电缆不含铅、镉、汞、六价铬等重金属，不含有溴系阻燃剂，不产生有害的卤素气体，不产生腐蚀性气体，使电缆的毒性指数≤1，燃烧时的发烟量很小，燃烧时的透光率≥75%，且不污染土壤。 The beneficial effects of this embodiment are: a green and environmentally friendly digital symmetrical cable in this embodiment has excellent flame retardancy and environmental protection performance. Contains brominated flame retardant, does not produce harmful halogen gas, does not produce corrosive gas, makes the toxicity index of the cable ≤1, the amount of smoke generated during combustion is very small, the light transmittance during combustion is ≥75%, and it does not pollute soil.
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| CN102751026A (en) * | 2012-07-20 | 2012-10-24 | 安徽江淮电缆集团有限公司 | Environment-friendly digital symmetrical cable |
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| CN102751026A (en) * | 2012-07-20 | 2012-10-24 | 安徽江淮电缆集团有限公司 | Environment-friendly digital symmetrical cable |
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