Abstract An experimental apparatus is set up to study the methane and air mixture explosion under the effect of vacuum chamber coupled with CO2. A series of experiments have been performed to analyze the effect of CO2/vacuum chamber on explosion strength and explosion suppression. The results show that: 1) When the vacuum degree is specified at 0.05 MPa, with the increase of CO2 concentration, the explosion suppression performance of the vacuum chamber increases gradually. Under the effect of the vacuum chamber, the higher the vacuum degree is, the more significant the suppression effect is. 2) Under the effect of the vacuum chamber/CO2, the optimum suppression effect is at lower vacuum degree coupled with CO2. 3) The optimum suppression effect of vacuum chamber/CO2 is with low vacuum degree, which is better than the vacuum chamber in high degree without CO2. Therefore, coupling CO2 to vacuum chamber can improve the suppression performance of the vacuum chamber and lower the cost for maintaining a high vacuum degree. The investigation results can be used as a reference for the further research of vacuum chamber.

中文翻译：

---

真空室耦合CO 2 抑制瓦斯爆炸的实验研究

摘要 搭建实验装置研究真空室耦合CO2作用下的甲烷和空气混合物爆炸。已经进行了一系列实验来分析CO2/真空室对爆炸强度和爆炸抑制的影响。结果表明： 1）当真空度规定为0.05 MPa时，随着CO2浓度的增加，真空室的抑爆性能逐渐提高。在真空室的作用下，真空度越高，抑制效果越显着。2) 在真空室/CO2 的作用下，最佳的抑制效果是在较低的真空度加上CO2。3）真空室/CO2的最佳抑制效果是真空度低，在高度无CO2的情况下优于真空室。因此，将CO2耦合到真空室可以提高真空室的抑制性能，降低维持高真空度的成本。调查结果可为真空室的进一步研究提供参考。