Self-ignition and explosion during discharge of high-pressure hydrogen
Self-ignition and explosion during discharge of high-pressure hydrogen
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DOI：
10.1016/j.jlp.2007.06.008
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发表时间：
2008-03-01
影响因子：
3.5
通讯作者：
Horiguchi, Sadashige
中科院分区：
文献类型：
--
作者：
Mogi, Toshio;Kim, Dongjoon;Horiguchi, Sadashige
研究了高压氢气放电过程中的自燃爆炸现象。为了弄清高压氢气射流的点火条件，对高压氢气的快速放电进行了实验研究。使用隔膜以允许高压氢气的快速排出。爆破压力在4至30 MPa之间变化。下游的几何形状的隔膜是一个法兰和延长管，与管道长度从3到300毫米不等。喷嘴的直径为5或10毫米。当使用短管，氢气射流。没有点燃。然而，随着管道长度的增加，氢气射流在管道中表现出越来越大的点燃倾向。在较高的爆破压力下，从管道形成扩散射流火焰。氢气射流自燃形成的火球产生的冲击波导致压力急剧上升。(C)2007爱思唯尔有限公司版权所有。
The phenomenon of self-ignition and explosion during discharge of high-pressure hydrogen was investigated. To clarify the ignition conditions of high-pressure hydrogen jets, rapid discharge of the high-pressure hydrogen was examined experimentally. A diaphragm was used to allow rapid discharge of the high-pressure hydrogen. The burst pressure was varied from 4 to 30 MPa. The downstream geometry of the diaphragm was a flange and extension pipes, with the pipe length varying from 3 to 300 mm. The diameter of the nozzle was 5 or 10 mm. When short pipes were used, the hydrogen jet. did not ignite. However, the hydrogen jet showed an increasing tendency to ignite in the pipe as the length of the pipe became longer. At higher burst pressures, a diffusion jet flame was formed from the pipe. The blast wave from the fireball formed on self-ignition of the hydrogen jet resulted in an extremely rapid pressure rise. (C) 2007 Elsevier Ltd. All rights reserved.