超細水霧抑制甲烷爆炸的實驗研究

摘要： 用自行設(shè)計的三面透明的細水霧抑制甲烷爆炸的實驗裝置,研究了不同體積超細水霧對不同濃度甲烷爆炸的抑制現(xiàn)象.運用GigaView高速攝影觀察了超細水霧抑制甲烷爆炸的過程,并且對現(xiàn)象進行了分析.采用四個E12-1-K型快速響應(yīng)熱電偶獲取超細水霧抑爆過程中四個不同位置的溫度變化情況,并且討論了甲烷濃度和超細水霧體積對爆炸延遲時間的影響.實驗結(jié)果表明,超細水霧對甲烷爆炸的抑制效果是與水霧的體積和甲烷濃度緊密相關(guān)的.初步確定了超細水霧抑制甲烷爆炸的臨界體積. Abstract： Suppression of methane explosion has been investigated experimentally in this paper. Different concentrations of methane explosion and different volumes of ultra-fine water mist were considered. A GigaView High-speed camera was used to visualize the processes of methane explosion suppression with ultra-fine water mist, and the phenomenon in the process was analyzed. Four E12-1-K type fast response thermocouples were used to obtain the temperature history of methane explosion suppressed with ultra-fine water mist. The effects of methane concentrations and ultra-fine water mist volumes on explosion delay time are discussed. The results show that the suppressing efficiency of the methane explosion with ultra-fine water mist is related to both of the water mist volume and the methane concentration, and a critical volume value of ultra-fine water mist for suppressing methane explosion is primarily determined. 作 者： 谷睿    王喜世    許紅利    GU Rui    WANG Xi-shi    XU Hong-li   作者單位： 中國科學技術(shù)大學火災(zāi)科學國家重點研究實驗室,合肥,230026  期 刊： 火災(zāi)科學    Journal： FIRE SAFETY SCIENCE  年，卷(期)： 2010, 19(2)  分類號： X932  關(guān)鍵詞： 甲烷爆炸    抑爆    爆炸延遲時間    超細水霧    Keywords： Methane explosion    Explosion suppression    Explosion delay time    Ultra-fine water mist   

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