摘要
为了研究真空腔体积与真空腔抑制瓦斯爆炸性能的关系,设计了瓦斯爆炸L型试验管道,并制作了能调节真空腔体积的装置:"圆板"。依次进行了真空腔体积由大到小的系列真空腔抑制瓦斯爆炸试验。试验结果表明:1)真空腔的抑爆效果取决于真空腔体积与临界体积的关系,当真空腔体积大于临界体积时,真空腔有很好的抑爆效果;而当真空腔体积小于临界体积时,真空腔非但没有抑爆效果,瓦斯爆炸压力和火焰信号强度反而比没有真空腔时还强;2)对于本试验管道,真空腔的临界体积为0.026 m3,占试验管道总体积的43%。当真空腔体积大于试验管道总体积的43%时,真空腔有抑爆效果,反之,则没有抑爆效果。
In this paper, to study the correlation between vacuum chamber volume and its suppression of gas explosion, a L-type pipe of gas explosion was designed, and the round plastic plate which can adjust the volume of vacuum chamber was made. In addition, a series of experiments about gas explo-sion suppression were carried out with the vacuum chamber volume changed in descending order. The results show that the suppression effect of gas explosion depends on the relation of vacuum chamber volume and its critical volume. When the vacuum chamber volume is greater than its critical volume, vacuum chamber has good suppression effect of gas explosion. When the vacuum chamber volume is smaller than its critical volume, the vacuum chamber has no suppression effect, furthermore, the over-pressure of gas explosion is higher and flame signal strength of gas explosion is stronger in comparison with no vacuum chamber. Meanwhile, for the pipe used in these experiments, the critical volume of vacuum chamber is 0.026 m3, which is 43%of the pipe volume. This conclusion displays that when the vacuum chamber volume is greater than 43% of the experimental pipe, the vacuum chamber has the suppression effect of gas explosion. Conversely, there is no suppression effect of gas explosion.
出处
《采矿与安全工程学报》
EI
北大核心
2014年第3期489-493,共5页
Journal of Mining & Safety Engineering
基金
河南省瓦斯地质与瓦斯治理重点实验室-省部共建国家重点实验室培育基地开放基金项目(WS2012A04)
江苏高校优势学科建设工程项目
国家煤炭联合基金重点项目(51134023
51134023)
中国矿业大学基本科研业务费科技项目(2011RC08)
关键词
真空腔
瓦斯爆炸
临界体积
爆炸火焰
爆炸超压
vacuum chamber
gas explosion
critical volume
explosive flame
explosive overpressure
