基于桶式环形加热的阻燃电缆细观竖直燃烧特性研究实验平台的设计
|
摘要
针对阻燃电缆等难燃材料,为研究其在外界热源条件下的火灾性能与蔓延燃烧特性,研制了基于环形加热的阻燃电缆细观燃烧特性诊断实验平台。该平台主要包括三个部分,即:半封闭环形桶式加热与燃烧腔室、样品竖直固定模块和数据采集系统。实验参数的标定及典型阻燃电缆受热与燃烧实验结果表明,常规条件下无法点燃的阻燃电缆,当置于实验平台的加热炉内被加热一段时间后,底部小火源可将其点燃并呈现猛烈的燃烧与蔓延过程。该加热模块能够详细、准确地研究各种阻燃电缆在环形加热条件下的膨胀、引燃及蔓延燃烧的细观特性,而不同的加热模式有助于深入研究阻燃材料在各种热环境下的火灾特性,为阻燃材料的引燃机理及火蔓延模型研究提供了必要的研究平台。
Aiming at fire response behaviors of flame-retardant cables and other materials under external heating conditions,a new experimental facility was designed with an annular vertical heating and burning chamber.The facility consists of three main parts:the semi-closed annular heating and burning chamber,the sample holding model and the data acquisition system.The facility calibrations and experiments for the burning behavior of flame-retardant cables showed that the typical flame-retardant cables can be easily ignited and burn strongly in the chamber.The detailed swelling,ignition and flame spread characteristics of flame-retardant materials can be quantitatively analyzed in the new facility.In addition,various heating modes of this facility are helpful for simulating different fire scenarios,where materials might stay.It might play an important role in the study of ignition mechanism and flame spread model of flame-retardant materials.
Aiming at fire response behaviors of flame-retardant cables and other materials under external heating conditions,a new experimental facility was designed with an annular vertical heating and burning chamber.The facility consists of three main parts:the semi-closed annular heating and burning chamber,the sample holding model and the data acquisition system.The facility calibrations and experiments for the burning behavior of flame-retardant cables showed that the typical flame-retardant cables can be easily ignited and burn strongly in the chamber.The detailed swelling,ignition and flame spread characteristics of flame-retardant materials can be quantitatively analyzed in the new facility.In addition,various heating modes of this facility are helpful for simulating different fire scenarios,where materials might stay.It might play an important role in the study of ignition mechanism and flame spread model of flame-retardant materials.
引文
[1]智研咨询集团.2015-2020年中国电线电缆产业深度调研与投资前景分析报告[EB/OL].中国产业信息网,http://www.chyxx.com/research/201509/345526.html,2015-09-21.
[2]公安部消防局.中国消防年鉴2013[M].北京:中国人事出版社,2013,322.
[3]公安部消防局.中国消防年鉴2014[M].昆明:云南人民出版社,2014,296.
[4]公安部消防局.中国消防年鉴2015[M].昆明:云南人民出版社,2016,358.
[5]GB 50745-2012,核电厂常规岛设计防火规范[S].
[6]GB/T 18380.11-2008,电缆和光缆在火焰条件下的燃烧试验第11部分:单根绝缘电线电缆火焰垂直蔓延试验试验装置[S].
[7]GB/T 12666.1-2008,单根电线电缆燃烧试验方法第1部分:垂直燃烧试验[S].
[8]GA 306.1-2007,塑料绝缘阻燃及耐火电缆分级和要求第1部分:阻燃电缆[S].
[9]GB 31247-2014,电缆及光缆燃烧性能分级[S].
[10]ASTM E1321-13,Standard test method for determining material ignition and flame spread properties[S].
[11]ISO 4589-2:1996,Plastics-Determination of burning behaviour by oxygen index-Part 2:Ambient-temperature test[S].
[12]ISO 4589-3:1996,Plastics-Determination of burning behaviour by oxygen index-Part 3:Elevated-temperature test[S].
[13]Fernandez-Pello AC et al.A study of the fire performance of electrical cables[J].Fire Safety Science,1991,(3):237-247.
[14]Tewarson A,Khan MM.Fire propagation behavior of electrical cables[J].Fire Safety Science,1989,(2):791-800.
[15]Miyamoto K et al.Limiting oxygen concentration(LOC)of burning polyethylene insulated wires under external radiation[J].Fire Safety Journal,2016,(86):32-40.
[2]公安部消防局.中国消防年鉴2013[M].北京:中国人事出版社,2013,322.
[3]公安部消防局.中国消防年鉴2014[M].昆明:云南人民出版社,2014,296.
[4]公安部消防局.中国消防年鉴2015[M].昆明:云南人民出版社,2016,358.
[5]GB 50745-2012,核电厂常规岛设计防火规范[S].
[6]GB/T 18380.11-2008,电缆和光缆在火焰条件下的燃烧试验第11部分:单根绝缘电线电缆火焰垂直蔓延试验试验装置[S].
[7]GB/T 12666.1-2008,单根电线电缆燃烧试验方法第1部分:垂直燃烧试验[S].
[8]GA 306.1-2007,塑料绝缘阻燃及耐火电缆分级和要求第1部分:阻燃电缆[S].
[9]GB 31247-2014,电缆及光缆燃烧性能分级[S].
[10]ASTM E1321-13,Standard test method for determining material ignition and flame spread properties[S].
[11]ISO 4589-2:1996,Plastics-Determination of burning behaviour by oxygen index-Part 2:Ambient-temperature test[S].
[12]ISO 4589-3:1996,Plastics-Determination of burning behaviour by oxygen index-Part 3:Elevated-temperature test[S].
[13]Fernandez-Pello AC et al.A study of the fire performance of electrical cables[J].Fire Safety Science,1991,(3):237-247.
[14]Tewarson A,Khan MM.Fire propagation behavior of electrical cables[J].Fire Safety Science,1989,(2):791-800.
[15]Miyamoto K et al.Limiting oxygen concentration(LOC)of burning polyethylene insulated wires under external radiation[J].Fire Safety Journal,2016,(86):32-40.