摘要
针对不同环境温度对瓦斯爆炸压力及最大压力上升速率的影响进行实验。研究表明,在其他条件不变的情况下,随着环境温度的增加最大爆炸压力逐渐减小,且最大爆炸压力与环境温度的倒数呈现线性衰减规律;随着环境温度的升高,化学反应速率增加,爆炸压力达到峰值所需的时间减少;瓦斯气体的最大压力上升速率随环境温度的升高呈非线性变化规律,在环境温度为298~473K的范围内,最大压力上升速率基本不变。这些规律性的结论可为防治矿井瓦斯爆炸事故和煤层气的安全利用提供理论基础。
Based on the theoretical analyses, a set of experimental equipment, which consisting of a 20-1itre closed spherical container, a gas distribution system, an ignition system, a heating system and a data acquisition system, was adopted to experimentally investigate the effects of the different envi- ronmental temperatures on the gas explosion pressure and the maximum pressure rise rate. The ex- perimental results show that when the other conditions remain unchangeable, the maximum explosion pressure gradually decreases with the increase of the environmental temperature and its attenuation is linear with the reciprocal of the environmental temperature. With the increase of the environmental temperature, the chemical reaction rate quickens, and the time that the explosion pressure reaches its peak shortens. The maximum pressure rise rate of the gas explosion is nonlinear with the increase of the environmental temperature, but it basically remains unchanged in the 298~473 K environmental temperature range.
出处
《爆炸与冲击》
EI
CAS
CSCD
北大核心
2013年第4期415-419,共5页
Explosion and Shock Waves
基金
国家自然科学基金项目(51274238)
重庆市自然科学基金项目(cstc2011jjA90018)~~
关键词
爆炸力学
瓦斯爆炸
环境温度
爆炸压力
爆炸压力上升速率
mechanics of explosion
gas explosion
environmental temperature
explosion pressurepressure rise rate
