主管:中华人民共和国应急管理部
主办:应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU

消防科学与技术 ›› 2022, Vol. 41 ›› Issue (10): 1380-1083.

• • 上一篇    下一篇

4A沸石抑制小麦淀粉爆炸试验研究

关文玲,王霍勤,董呈杰,王宏伟   

  1. (天津理工大学 环境科学与安全工程学院,天津 300384)
  • 出版日期:2022-10-15 发布日期:2022-10-15
  • 作者简介:作者简介:关文玲(1978- ),女,陕西渭南人,天津理工大学环境科学与安全工程学院副教授,硕士生导师,博士,主要从事粉尘防爆、工业火灾爆炸与风险管控等研究,天津市西青区李七庄街道宾水西道391号,300384。

Experimental investigation on suppression of wheat starch explosion by 4A zeolite

Guan Wenling, Wang Huoqin,Dong Chengjie, Wang Hongwei   

  1. (College of Environmental Science and Safety Engineering, Tianjin University of Technology, Tianjin 300384, China)
  • Online:2022-10-15 Published:2022-10-15

摘要: 摘 要:为了研究4A沸石对小麦淀粉爆炸的抑制作用,基于小麦淀粉的最佳爆炸浓度,采用封闭的Siwek 20-L球开展了小麦淀粉/4A沸石混合粉尘爆炸试验,分析了混合粉尘的最大爆炸压力和最大爆炸压力上升速率随4A沸石质量增加的变化规律。结果表明:4A沸石能够降低小麦淀粉的爆炸猛度,抑制爆炸火焰传播;在10 g的小麦淀粉中,添加4A沸石能够连续地降低小麦淀粉的最大爆炸压力上升速率,质量分数为9.09%时,4A沸石能够大幅度地降低小麦淀粉的最大爆炸压力;添加9.09%及以上的4A沸石可使10 g的小麦淀粉不发生粉尘爆炸;4A沸石是一种物理化学混合型粉体抑爆剂,主要通过冷却、稀释、吸收自由基等作用减弱小麦淀粉的爆炸威力。

关键词: 关键词:粉尘爆炸, 小麦淀粉, 4A沸石, 惰性粉体, 抑制作用

Abstract: Abstract: The current fire image recognition methods rely primarily on large datasets, which will cause unreliable detection results when training samples are insufficient. In response to the problem of generally lack of fire image samples, a large-scale fire image dataset containing various application scenarios based on fire detection algorithm development and evaluation needs is proposed. This paper trains and develops fire detection algorithms based on the fire image dataset, and verifies the completeness and effectiveness of the fire image dataset. Experiments on the fire image dataset established in this paper show that the universality and effectiveness of fire detection algorithms, the experimental results show that this fire image dataset provides a basic platform for the research of image-type fire detection algorithms.

Key words: Key words: fire image, fire detection, algorithm evaluation