CN201402667Y - 一种高压供输电电力电缆 - Google Patents
一种高压供输电电力电缆 Download PDFInfo
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Abstract
本实用新型涉及电缆技术领域，尤其涉及35kVA类阻燃电力电缆技术领域，适用于动力与电气技术领域，包括由导体、导体屏蔽、绝缘、绝缘屏蔽、铜带屏蔽和外护层组成的单芯阻燃电缆或包括导体、绝缘、屏蔽、填充和外护层组成的阻燃非铠装电缆或包括导体、绝缘、屏蔽、填充、内护层、铠装层和外护层组成的阻燃铠装电缆，在电缆的绝缘线芯和外护套之间内设有高阻燃层，本实用新型能满足35kV阻燃电力电缆，达到GB/T18380.3－2001《成束电线电缆的燃烧试验方法》标准中A类规定的要求，阻燃效果好。
Description
技术领域
本实用新型涉及电缆技术领域，尤其涉及35kVA类阻燃电力电缆技术领域，适用在高压供输电技术领域。
背景技术
为提高电气线路的安全水平，电缆的阻燃问题越来越引起人们关注，电缆的阻燃化已成为我国线缆行业的一个综合发展方向。为确保电力线路中的电缆设计和运行做到安全可靠、技术先进、经济合理，防止电缆所引起的火灾，减少电线电缆在火灾中所造成的损失，许多电力公司规定今后在35kV电力线路中，无论是新设计的线路还是老路线的改造，应采用阻燃型电缆，且电缆的阻燃性能要达到GB/T18380.3-2001《成束电线电缆的燃烧试验方法》标准中A类规定的要求。35kV电缆的阻燃性能国内许多厂家只能做到C类，若要达到A类阻燃要求，就要对其绝缘阻燃处理，然而，35kV的电缆有较高耐电要求，任何阻燃剂的掺入，对绝缘的介质、耐压、游离都会带来致命的危害。
技术方案
本实用新型为了提供一种克服上述缺陷，能满足35kV阻燃电力电缆，达到GB/T18380.3-2001《成束电线电缆的燃烧试验方法》标准中A类规定的要求，阻燃效果好的阻燃电力电缆。
本实用新型包括由导体、导体屏蔽、绝缘、绝缘屏蔽、铜带屏蔽和外护层组成的单芯阻燃电缆或包括导体、绝缘、屏蔽、填充和外护层组成的阻燃非铠装电缆或包括导体、绝缘、屏蔽、填充、内护层、铠装层和外护层组成的阻燃铠装电缆，在电缆的绝缘线芯和外护套之间内设有高阻燃层。
高阻燃层采用涂胶玻璃布带，填充层采用阻燃成型填充条，其氧指数大于30。
本实用新型由于在电缆的绝缘线芯和护套之间采用了高阻燃层，起到了保护绝缘层不被燃烧的目的，且高阻燃层材料采用了特殊结构，又由于将电缆的填充材料采用阻燃成型填充条，其氧指数大于30，该电缆除满足正常电气性能和机械物理性能外，还具有以下特征：
1、阻燃特性：能阻止火灾的蔓延，其阻燃性能达到GB/T18380.3-2001《成束电线电缆的燃烧试验方法》标准中A类规定。
2、对于35kV低卤低烟A类阻燃电缆：其透光率不小于30％，电缆燃烧时低卤性能：a、卤酸气体逸出量不大于100mg/g；b、pH值不小于2.5，电导率不大于30
3、对于5kV无卤低烟A类阻燃电缆：其透光率不小于60％，电缆燃烧时无卤性能：a、无卤酸气体逸出；b、pH值不小于4.3，电导率不大于
本实用新型设计科学、构思新颖，加工工艺简单，具有很好的阻燃效果。
附图说明
附图1是本实用新型阻燃铠装型电缆结构示意图
图中1是导体，2是导体屏蔽，3是绝缘，4是绝缘屏蔽，5是铜带屏蔽，6是成型填充，7是高阻燃层，8是内护层，9是铠装层，10是外护层。
附图2是本实用新型阻燃非铠装型结构示意图
图中1是导体，2是导体屏蔽，3是绝缘，4是绝缘屏蔽，5是铜带屏蔽，6是成型填充，7是高阻燃层，10是外护层。
附图3本实用新型35kVA类(单芯)阻燃电缆结构示意图
图中1是导体，2是导体屏蔽，3是绝缘，4是绝缘屏蔽，5是铜带屏蔽，7是高阻燃层，10是外护层。
具体实施方式
如图1所示的35KVA类阻燃铠装电缆，包括由里到外一次设置的导体1，导体屏蔽2，绝缘3，绝缘屏蔽4，铜带屏蔽5，填充层6，，内护层8，铠装层9，外护层10，它还包括高阻燃层7，高阻燃层7设在填充层6与内护层8之间。如图2所示中高阻燃层7设在填充层6与外护套之间。如图3所示中高阻燃层7设在铜带屏蔽层5与外护层10之间。高阻燃层7主要起到保护层不被燃烧的目的，它是由玻璃纤维布作基带，在玻璃纤维布的表面设有由金属水合物和阻燃胶类溶剂形成的多孔状涂层。
填充层6采用阻燃成型填充条，其氧指数大于30，外护套采用阻燃材料。
导体1采用IEC60502第二类铜或铝导体，导体屏蔽2、绝缘屏蔽4采用非金属半导电混合材料，绝缘采用交联聚乙烯或乙丙橡胶绝缘，内护层8和外护层10采用聚氯乙烯、低卤低烟或无卤低烟护套材料、铠装层9采用镀锌钢带。
Claims (2)
1、一种高压供输电电力电缆，它包括由导体、导体屏蔽、绝缘、绝缘屏蔽、铜带屏蔽和外护层组成的单芯阻燃电缆或包括导体、绝缘、屏蔽、填充和外护层组成的阻燃非铠装电缆或包括导体、绝缘、屏蔽、填充、内护层、铠装层和外护层组成的阻燃铠装电缆，其特征在于，在电缆的绝缘线芯和外护套之间内设有高阻燃层。
2、根据权利要求书1所述的一种高压供输电电力电缆，其特征在于高阻燃层采用涂胶玻璃布带，填充层采用阻燃成型填充条，其氧指数大于30。
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102074298A (zh) * | 2010-12-29 | 2011-05-25 | 金坛市金鹿电缆材料有限公司 | 一种三重屏蔽阻燃型核电专用电力电缆 |
| CN103578638A (zh) * | 2013-11-15 | 2014-02-12 | 江苏珠影特种电缆有限公司 | 一种铝合金电缆 |
| CN105448407A (zh) * | 2015-12-30 | 2016-03-30 | 合肥星辰电线电缆股份有限公司 | 一种高压漏电检测电缆 |
| CN107936350A (zh) * | 2017-12-22 | 2018-04-20 | 郑州宏亮电缆有限公司 | 一种橡套电缆及其电缆护套的制备方法 |
-
2009
- 2009-05-11 CN CN2009201196752U patent/CN201402667Y/zh not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102074298A (zh) * | 2010-12-29 | 2011-05-25 | 金坛市金鹿电缆材料有限公司 | 一种三重屏蔽阻燃型核电专用电力电缆 |
| CN102074298B (zh) * | 2010-12-29 | 2013-02-13 | 金坛市金鹿电缆材料有限公司 | 一种三重屏蔽阻燃型核电专用电力电缆 |
| CN103578638A (zh) * | 2013-11-15 | 2014-02-12 | 江苏珠影特种电缆有限公司 | 一种铝合金电缆 |
| CN105448407A (zh) * | 2015-12-30 | 2016-03-30 | 合肥星辰电线电缆股份有限公司 | 一种高压漏电检测电缆 |
| CN107936350A (zh) * | 2017-12-22 | 2018-04-20 | 郑州宏亮电缆有限公司 | 一种橡套电缆及其电缆护套的制备方法 |
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