超細(xì)水霧抑制甲烷爆炸的實(shí)驗(yàn)研究

摘要： 用自行設(shè)計(jì)的三面透明的細(xì)水霧抑制甲烷爆炸的實(shí)驗(yàn)裝置,研究了不同體積超細(xì)水霧對(duì)不同濃度甲烷爆炸的抑制現(xiàn)象.運(yùn)用GigaView高速攝影觀察了超細(xì)水霧抑制甲烷爆炸的過(guò)程,并且對(duì)現(xiàn)象進(jìn)行了分析.采用四個(gè)E12-1-K型快速響應(yīng)熱電偶獲取超細(xì)水霧抑爆過(guò)程中四個(gè)不同位置的溫度變化情況,并且討論了甲烷濃度和超細(xì)水霧體積對(duì)爆炸延遲時(shí)間的影響.實(shí)驗(yàn)結(jié)果表明,超細(xì)水霧對(duì)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(xì)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(guó)科學(xué)技術(shù)大學(xué)火災(zāi)科學(xué)國(guó)家重點(diǎn)研究實(shí)驗(yàn)室,合肥,230026  期 刊： 火災(zāi)科學(xué)    Journal： FIRE SAFETY SCIENCE  年，卷(期)： 2010, 19(2)  分類(lèi)號(hào)： X932  關(guān)鍵詞： 甲烷爆炸    抑爆    爆炸延遲時(shí)間    超細(xì)水霧    Keywords： Methane explosion    Explosion suppression    Explosion delay time    Ultra-fine water mist   

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