井下液态二氧化碳灭火装备的研究

发布时间：2018-03-01 01:07

本文关键词： 井下灾区液态二氧化碳灭火真空绝热自增压防冰堵气化喷射　出处：《中国安全科学学报》2017年06期 　论文类型：期刊论文

【摘要】：为有效遏制煤矿井下火灾事故,自行设计并研发灾区移动式液态二氧化碳灭火装备,该装备通过保温存储罐减小环境温度对罐内液体低温状态的影响,其自增压调控系统在排液过程中依据罐内欠压程度实现手动或自动充气的功能。采用该装备通过真空度检测、满液长时间压力与液位监测和模拟火源联机处置等3组试验,研究液态二氧化碳的有效存储、大流量输送和管路内外物理状态转变的特性及对火源的覆盖、熄灭性能。试验结果表明:存储罐真空度为1.6 Pa,48天后2 m~3规格的罐内液体有效容积不低于1.6 m~3,单罐液体放净时间约为10.5 min。此多功能小型化装备,可无人值守运行,双层粉末真空绝热结构延长了液体存储时间,管网通径扩增至DN40以加速排液,用氮气自补偿增压技术实现了100 m液体无冰堵水平输送后连续气化喷射。
[Abstract]:In order to effectively curb the coal mine fire accident, designed the disaster mobile liquid carbon dioxide fire extinguishing equipment, the equipment through the heat storage tank to reduce the influence of environmental temperature on low temperature liquid tank, the self pressurization control system in liquid discharge process on the basis of the tank under pressure level to achieve the automatic or manual charging function. By using the through the vacuum detection equipment, with long time pressure and liquid level monitoring and fire simulation on-line disposal of 3 sets of experiments, effective storage of liquid carbon dioxide, the transition properties of flow conveying pipeline and internal and external physical conditions and coverage of fire extinction performance. The experimental results show that the vacuum storage tank is 1.6 Pa, 48 after 2 days of m~3 specifications of the tank liquid volume of not less than 1.6 m~3, the single tank liquid discharging time is about 10.5 min. of the multifunctional miniaturized equipment can run unattended, double powder The final vacuum insulation structure prolongs the liquid storage time. The pipe diameter is amplified to DN40 to accelerate the drainage. The 100 m liquid ice free continuous transportation gasification injection is achieved by the nitrogen self pressurization technology.

【作者单位】：重庆大学机械传动国家重点实验室;中煤科工集团重庆研究院有限公司;
【基金】：重庆市煤矿安全生产科技项目(渝(煤)[2015]-kj-03) 中煤科工集团重庆研究院有限公司技术创新项目(2014YBXM49,2016YBXM33)
【分类号】：TD753

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