scholarly journals Mechanism of gas explosion suppression through the use of vacuum chamber with different volumes

2016 ◽  
Vol 8 (1) ◽  
pp. 27-38
Author(s):  
Shao Hao ◽  
Jiang Shuguang ◽  
Wu Zhengyan ◽  
Zhang Weiqing ◽  
Wang Kai
Keyword(s):  
Vacuum Chamber ◽  
Gas Explosion ◽  
Explosion Suppression

Experimental study on gas explosion suppression by coupling CO2 to a vacuum chamber

2018 ◽  
Vol 335 ◽  
pp. 42-53 ◽  
Author(s):  
Chuanbo Cui ◽  
Hao Shao ◽  
Shuguang Jiang ◽  
Xin Zhang
Keyword(s):  
Experimental Study ◽  
Vacuum Chamber ◽  
Gas Explosion ◽  
Explosion Suppression

Influence of vacuum degree on the effect of gas explosion suppression by vacuum chamber

2015 ◽  
Vol 38 ◽  
pp. 214-223 ◽  
Author(s):  
Hao Shao ◽  
Shuguang Jiang ◽  
Xin Zhang ◽  
Zhengyan Wu ◽  
Kai Wang ◽  
...  
Keyword(s):  
Vacuum Chamber ◽  
Gas Explosion ◽  
Explosion Suppression ◽  
Vacuum Degree

scholarly journals Study on Inhibitory Effect of Cavity on Gas Explosion Propagation

Geofluids ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Zhuo Yan ◽  
Shujie Yuan ◽  
Zhongqing Li ◽  
Shicheng Gu ◽  
Chaomin Mu
Keyword(s):  
Shock Wave ◽  
Experimental Study ◽  
Vacuum Chamber ◽  
Wave Attenuation ◽  
Inhibitory Effect ◽  
Pipeline System ◽  
Gas Explosion ◽  
Explosion Suppression ◽  
Cavity Structure ◽  
Single Cavity

It is pointed out in the literature that the vacuum chamber has the effect of explosion suppression. The effect of explosion suppression depends on the volume of the vacuum chamber, while the vacuum degree has little effect on the performance of explosion suppression. Inspired by this, to explore a new method of gas explosion suppression, a rectangular steel cavity with a wall thickness of 10 mm, a length of 500 mm, a width of 800 mm, and a height of 200 mm was designed. The cavity was installed in a pipeline system to carry out experimental research and to investigate the law of attenuation of gas explosion flames and shock wave overpressure after passing through the cavity. The results show that the single cavity has the function of flame-out and wave attenuation, which attenuates the explosion flame and shock wave overpressure by 42.5% and 11%, respectively, and that the dual cavity further improves the performance of flame-out and wave attenuation, which attenuates flame and shock wave overpressure by 75.4% and 26.7%, respectively. On the basis of the experimental study, a numerical model was established, and a numerical simulation was carried out under the same conditions as the experimental study. The results show that the single cavity inhibits the propagation of the shock wave and attenuates the shock wave overpressure by 10.61%. The dual cavity further improves the suppression performance and attenuates the shock wave overpressure by 28.88%. Finally, by simulating the propagation process of the gas explosion shock wave and flame in the cavity, the mechanism of inhibiting gas explosion propagation by the cavity structure is analyzed.

Influence of diaphragm thickness on gas explosion suppression by vacuum chamber

2016 ◽  
Vol 295 ◽  
pp. 245-253 ◽  
Author(s):  
Hao Shao ◽  
Shuguang Jiang ◽  
Zhengyan Wu ◽  
Weiqing Zhang ◽  
Kai Wang
Keyword(s):  
Vacuum Chamber ◽  
Gas Explosion ◽  
Diaphragm Thickness ◽  
Explosion Suppression

Coke oven gas explosion suppression

2013 ◽  
Vol 55 ◽  
pp. 81-87 ◽  
Author(s):  
Zengliang Zhang ◽  
Baiquan Lin ◽  
Gemei Li ◽  
Qing Ye
Keyword(s):  
Coke Oven ◽  
Coke Oven Gas ◽  
Gas Explosion ◽  
Explosion Suppression

Numerical Analysis of Water Mist Flow Field for Gas Explosion Suppression in Upper Corner

2011 ◽  
Vol 71-78 ◽  
pp. 4848-4851
Author(s):  
Fan Mao Meng ◽  
Zhi Chao Liu ◽  
Zhi Zhong Liu
Keyword(s):  
Numerical Analysis ◽  
Flow Field ◽  
Coal Mine ◽  
Water Mist ◽  
Gas Explosion ◽  
Gas Concentration ◽  
Methane Gas ◽  
Gas Accumulation ◽  
Explosion Suppression ◽  
Mist Flow

The water mist is an economical and environmental agent for gas explosion suppression. It can be applied in the commonly gas concentration zones and the gas accumulation zones which is difficult to reduce the concentration of methane gas. By numerical analysis, this paper studies the effect of the direction and the number of the nozzles, and the distance form the nozzles to the wall at X direction in upper corner in coal mine. For gas explosion suppression in upper corner, it can use one nozzle which direction is same as the wind and the distance is 2m.

scholarly journals Different Gas Explosion Mechanisms and Explosion Suppression Techniques

2011 ◽  
Vol 26 ◽  
pp. 1467-1472 ◽  
Author(s):  
Zhang Ruming ◽  
Nie Baisheng ◽  
He Xueqiu ◽  
Wang Chao ◽  
Zhao Caihong ◽  
...  
Keyword(s):  
Gas Explosion ◽  
Explosion Suppression

scholarly journals Experimental investigation on micro-dynamic behavior of gas explosion suppression with SiO2 fine powders

2011 ◽  
Vol 1 (3) ◽  
pp. 032004 ◽  
Author(s):  
Xianfeng Chen ◽  
Yin Zhang ◽  
Qingming Zhang ◽  
Shaofeng Ren ◽  
Jianxing Wu
Keyword(s):  
Experimental Investigation ◽  
Dynamic Behavior ◽  
Gas Explosion ◽  
Fine Powders ◽  
Explosion Suppression
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