| 张美琪,张建成,吴刘锁,王卓,景伟,石泽耀,朱小龙,胡健.水成膜泡沫对变压器油池火的窒息特性研究[J].火灾科学,2022,31(2):85-94. |
| 水成膜泡沫对变压器油池火的窒息特性研究 |
| Study on asphyxiation characteristics of aqueous film forming foam on transformer oil pool fire |
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| DOI：10.3969/j.issn.1004-5309.2022.02.04 |
| 基金项目:南瑞怡和环保科技有限公司项目(SGTYHT/18-JS-209,5246MK190005) |
| 作者 | 单位 | | 张美琪 | 国网电力科学研究院有限公司,南京,210003 | | 张建成 | 国网电力科学研究院有限公司,南京,210003 | | 吴刘锁 | 国网电力科学研究院有限公司,南京,210003 | | 王卓 | 国网电力科学研究院有限公司,南京,210003 | | 景伟 | 国网电力科学研究院有限公司,南京,210003 | | 石泽耀 | 国网电力科学研究院有限公司,南京,210003 | | 朱小龙* | 中国科学技术大学火灾科学国家重点实验室,合肥,230026 | | 胡健 | 中国科学技术大学火灾科学国家重点实验室,合肥,230026 |
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| 中文关键词: 泡沫灭火剂 变压器油火 老化处理 泡沫稳定性 灭火性能 抗烧特性 |
| 英文关键词:Foam extinguishing agent Transformer oil fire Aging treatment Foam stability Fire extinguishing performance Anti burning characteristics |
| 摘要点击次数: 210 |
| 全文下载次数: 805 |
| 中文摘要: |
| 水成膜泡沫在油类表面的窒息作用是扑灭油类火灾的重要机理之一,针对自行开发的快速型泡沫灭火剂开展了其对油池火的窒息灭火特性研究。首先通过老化试验测试了泡沫液的热稳定性,然后对比了不同成分泡沫液在25＃变压器油表面的铺展特性,之后研究了不同发泡倍率和成分的泡沫液对油池火的窒息灭火效果及影响规律。研究发现,铺展性能不佳的泡沫液会逐渐丧失窒息能力,而铺展性能优异的泡沫液能持续发挥窒息作用。提升泡沫液热稳定性有利于在油面形成稳定的液膜,隔绝氧气并降低可燃分子挥发速率。此外,发泡倍率较低的泡沫液的流动性更强,在相同液体流量条件下低倍数泡沫的窒息灭火效果更优。自研的快速型泡沫灭火剂在热稳定性和铺展性能两方面均具备优良的性能,因此其窒息灭火效率和抗复燃能力优于现有的大部分同类泡沫灭火剂。 |
| 英文摘要: |
| The asphyxiation effect of water film forming foam on oil surface is one of the important mechanisms for extinguishing oil fires. This paper studies the characteristics of asphyxiation and extinguishing of oil pool fire in light of the self-developed rapid foam extinguishing agent. First, the thermal stability of foam liquid was tested by an aging test, and then the spreading characteristics of different components of foam liquid on the surface of 25# transformer oil were compared. After that, the effect of foam with different foaming ratios and composition on the fire extinguishment of oil pool fire and its influence rule were studied. It is found that the foam liquid with poor spreading performance will gradually lose its asphyxia ability, and the foam liquid with excellent spreading performance can continue to exert a suffocation effect. Enhancing the thermal stability of foam solution is conducive to the formation of stable liquid film on the oil surface, isolating oxygen and reducing the volatilization rate of combustible molecules. In addition, the foam with a low foaming rate has more fluidity. Under the same liquid flow condition, the smothering effect of low multiple foam is better. The self-developed rapid foam extinguishing agent has excellent thermal stability and spreading performance, so its asphyxia extinguishing efficiency and anti reburning ability are superior to most existing foam extinguishing agents. |
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