微颗粒浓度光学检测在高灵敏度火灾探测器中的应用研究

Application Research of Optical Detection of Micro Particle Concentration in High Sensitivity Fire Detector

摘要

火灾事故损失的降低与先进的早期火灾预警技术密不可分，这些技术发挥了关键作用。传统火灾探测系统在阴燃阶段难以高效检测，无法提供真正的早期预警。本论文全面分析了包裹相变增强技术与微粒浓度光学检测装置的组合使用，提出了一种高灵敏的火灾检测方法。研究显示，这项技术运用相变材料扩展纳米热解粒子的尺寸，将其从（1-1000）nm增大到10μm，使其进入强米氏散射反应区域。结合高透过率的光学检测系统，能够在烟雾或火焰出现前提供可靠的火灾预警，为火灾的极早期检测提供了新的技术解决方案。

Abstract

The reduction in fire-related losses is closely linked to advanced early fire warning technologies that have played a pivotal role. Traditional fire detection systems struggle to efficiently identify fires during the smoldering phase, failing to provide genuine early warnings. This study comprehensively analyzes the integration of encapsulated phase-change enhancement technology with optical detection devices for particulate concentration monitoring, proposing a highly sensitive fire detection method. Research demonstrates that this technology utilizes phase-change materials to expand the size of nanoscale pyrolytic particles from (1-1000) nm to 10 μm, enabling them to enter the strong Michaelis scattering reaction region. Combined with high-transmittance optical detection systems, it delivers reliable fire warnings before smoke or flames emerge, offering a novel technical solution for ultra-early fire detection.

关键词

热解颗粒 / 相变增强封装 / 光学高透性检测 / 非常灵敏的火灾监测器 / 超早期报警

Key words

pyrolytic particles / phase-change enhanced encapsulation / optically highly transparent detection / ultra-sensitive fire detector / ultra-early warning

参考文献

[1] 王进军、曾怡、袁伟等人进行了关于棉垛早期阴燃火灾特征及棉花仓库主动吸气式复合探测的研究,结果发表在《安全与环境学报》2012年第12卷第2期,页码为205至208.

[2] WAKELYN P J. The Chemistry and Technology of Cotton Fibers[M]. BocaRa-ton:Published by CRC in 2007.

[3] DING L, JI J, KHAN F, et al. Assessment of fire hazards in cotton warehouses and examination of crucial risk mitigation techniques[J]. Fire and Materials, 2019, 44: 165-179.

[4] 朱荨荨. 关于棉花仓库发生火灾的危险因素及预防措施的研究[J]. 刊登在《消防技术与产品信息》 2017(3): 26-29.

[5] 王吉红. 关于火灾监测技术的现状及其发展方向探讨[J]. 建筑安全, 2024, 39(7): 62-65, 69.

[6] 邢国新、 赵海龙、 吴志强. 关于地铁中热解颗粒电气火灾探测装置的应用研究[J]. 消防科学与技术, 2021, 40(11): 1695-1698.

基金资助

郑州市科技发展战略研究所基于密闭环境下的主动高灵敏度火灾探测系统关键技术开发与应用为例研究成果(252102220110)