Inhibition of explosion characteristic of premixed gases by filling patterns of rare earth metal materials

ZHAO Qi; CHEN Xianfeng; DAI Huaming; YIN Shuhui; WANG Xiaotong; ZHANG Hongming; HUANG Chuyuan

doi:10.11883/bzycj-2018-0276

Volume 39 Issue 11

Nov. 2019

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ZHAO Qi, CHEN Xianfeng, DAI Huaming, YIN Shuhui, WANG Xiaotong, ZHANG Hongming, HUANG Chuyuan. Inhibition of explosion characteristic of premixed gases by filling patterns of rare earth metal materials[J]. Explosion And Shock Waves, 2019, 39(11): 115404. doi: 10.11883/bzycj-2018-0276

Citation:

ZHAO Qi, CHEN Xianfeng, DAI Huaming, YIN Shuhui, WANG Xiaotong, ZHANG Hongming, HUANG Chuyuan. Inhibition of explosion characteristic of premixed gases by filling patterns of rare earth metal materials[J]. Explosion And Shock Waves, 2019, 39(11): 115404. doi: 10.11883/bzycj-2018-0276

Citation:

ZHAO Qi, CHEN Xianfeng, DAI Huaming, YIN Shuhui, WANG Xiaotong, ZHANG Hongming, HUANG Chuyuan. Inhibition of explosion characteristic of premixed gases by filling patterns of rare earth metal materials[J]. Explosion And Shock Waves, 2019, 39(11): 115404. doi: 10.11883/bzycj-2018-0276

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Inhibition of explosion characteristic of premixed gases by filling patterns of rare earth metal materials

doi: 10.11883/bzycj-2018-0276

School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, Hubei, China

Received Date: 2018-07-29
Rev Recd Date: 2018-09-28

Available Online: 2019-10-25

Publish Date: 2019-11-01

Abstract

Abstract

Using a 20 L spherical explosive device filled with porous rare earth metal materials, we investigated the explosion characteristics variation of the premixed methane-air mixture in two different filling patterns: spherical and flaky. The influences of blank rate and packed density on the explosion characteristics were considered. And the pressure sensor was used to record the explosion pressure inside the spherical device. It shows that the methane explosion pressure, the maximum pressure rise rate, and the explosion index are all proportional to the blank rate and inversely proportional to the packed density. The drop rate of the maximum explosion pressure of the flaky materials is greater than that of the spherical materials. The explosion suppression performance of the flaky materials is better than that of the spherical materials, and the dual function of the flaky materials has a stronger influence on the explosion power. The main mechanisms of fire and explosion suppression in the two different filling patterns are different.
- rare earth metal materials,
- filling pattern,
- explosion suppression,
- blank rate,
- packed density

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References(19)

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