关于喷气式自吸风泡发电机的泡生产特性研究
Caiyuan Lu1,2, Yuxin Wu3,4, Di Zhu3,4
1Key Laboratory of Gas and Fire Control for Mines, Ministry of Education, Xuzhou, 221116, China. TB20120015B2@cumt.edu.cn.
Scientific reports
|January 3, 2025
概括
这项研究优化了适用于狭窄空间的空气自吸泡发生器,达到42倍的高泡膨胀率 (FER). 改进的设备可以在具有挑战性的环境中增强防火和灭火能力.
科学领域:
- 消防科学与工程 消防科学与工程
- 流体动力学 流体动力学
- 泡技术技术的使用
背景情况:
- 封闭空间火灾对生命和财产构成重大风险.
- 现有的泡发电机缺乏适用于狭窄空间的最佳动量和泡膨胀率 (FER).
- 需要专门的泡发电机来有效地保护封闭的环境.
研究的目的:
- 分析自吸泡的物理发泡特性.
- 为了优化泡发电机的结构,用于狭小空间的防火.
- 开发一种具有增强空气引入和高FER的设备.
主要方法:
- 对空气自吸泡发生器原理的分析.
- 使用Fluent软件进行计算流体动力学 (CFD) 模拟,研究整形孔板的超电流比率 (φ).
- 通过模拟和实验验证,优化喷嘴腔间距 (μ),混合室直径和泡网格参数 (数量,间距,层次).
主要成果:
- 确定了最佳条件:溢出比 (φ) 为0.455,喷嘴腔间距 (μ) 为200mm,混合室直径为260mm.
- 实验验证证了在 φ = 0.455.5 的最大空气引入量.
- 最佳的泡网格配置 (16网格,3厘米间距,2层) 和喷嘴距离 (22厘米) 产生FER为42,范围 (L) 为13米,堆叠厚度 (σ) 为7厘米,分离速率 (γ) 为0.15L/s.
结论:
- 开发了一种新型的空气自吸泡发电机,证明了优越的空气引入和高FER.
- 优化的设备对于在狭窄的空间中长距离的泡投影非常有效.
- 开发的泡发电机显著提高了在狭窄环境中的防火和灭火能力.
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