带有形热量计的电源电缆的燃烧特性
1Zhengzhou Key Laboratory of Electric Power Fire Safety, College of Building Environment Engineering, Zhengzhou University of Light Industry, 450000, China.
Heliyon
|February 6, 2024
概括
这项研究研究了城市公用事业道中的四种电力电缆类型的燃烧特性. 与YJV和ZR-YJV类型相比,ZR-VV电缆显示出更低的热释放和更好的防火性能.
科学领域:
- 消防科学 消防科学 消防科学
- 材料科学 材料科学 材料科学
- 工程 工程师 工程师 工程师
背景情况:
- 电力电缆是城市公用事业道 (UUT) 中一个重要的火灾风险因素.
- 电缆绝缘,填充和覆盖非常容易发生点火.
研究的目的:
- 为了研究四种电源电缆类型 (YJV,ZR-YJV,ZR-VV,ZR-PE) 在不同的热流和外厚度下的燃烧特性.
- 分析热释放率 (HRR),有效热燃烧 (EHC),光密度指数 (ODI) 和烟雾产生率 (SPR) 对电缆点火和燃烧的影响.
主要方法:
- 使用圆热量计进行实验室实验.
- 在两种热流 (35kW/m2和75kW/m2) 和两种外厚度 (3mm和5mm) 下进行测试.
主要成果:
- 与YJV和ZR-YJV电缆相比,ZR-VV电缆的点火时间 (TTI),平均HRR和EHC都较短.
- 热流显著影响ZR-PE电缆的HRR,SPR和EHC,而外厚度的影响最小.
- 该研究确定了点火时间作为一个关键参数,取决于电缆的组成和结构.
结论:
- 与YJV和ZR-YJV相比,ZR-VV电源电缆在UUT中表现出优越的防火性能.
- 外部热流的复杂性会根据电缆特性影响燃烧行为.
- 实验室数据为消防安全评估提供了对电缆燃烧的关键见解.
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