火焰撞击障碍物形成的溢流火焰融合行为研究

doi:10.16265/j.cnki.issn1003-3033.2021.04.023

中国安全科学学报 ›› 2021, Vol. 31 ›› Issue (4): 171-176.doi: 10.16265/j.cnki.issn1003-3033.2021.04.023

火焰撞击障碍物形成的溢流火焰融合行为研究

邢朝亮¹, 黄咸家^**1 副研究员, 何乐², 祝赫², 郑泽铭¹

1 广州中国科学院工业技术研究院核电火灾安全联合实验室,广东广州 511458;
2 中广核工程有限公司核电安全监控与装备国家重点实验室,广东深圳 518124

收稿日期:2021-01-10 修回日期:2021-03-07 出版日期:2021-04-28 发布日期:2021-12-20
通讯作者: **黄咸家(1983—),男,安徽芜湖人,博士,副研究员,主要从事核电厂火灾动力学及其关键防治技术研究。 E-mail:huangxianjia@gziit.ac.cn。
作者简介:邢朝亮 (1985—),男,河南漯河人,本科,主要从事火灾试验研究。E-mail: xingchaoliang@gziit.ac.cn。
基金资助:
国家科技部重点研发计划项目(2016NYC0800100);广州市科技项目(202002030124);南沙区项目(2019SF10)。

Experimental study on flame merging behavior of spilled flame generated by flame impinging on obstruction

XING Chaoliang¹, HUANG Xianjia¹, HE Le², ZHU He², ZHENG Zeming¹

1 Joint Laboratory of Nuclear Power Plant Fire Safety, Institute of Industry Technology, Guangzhou & Chinese Academy of Sciences, Guangzhou Guangdong 511458, China;
2 State Key Laboratory of Nuclear Power Monitoring Technology and Equipment, China Nuclear Power Engineering Co., Ltd., Shenzhen Guangdong 518124, China

Received:2021-01-10 Revised:2021-03-07 Online:2021-04-28 Published:2021-12-20

摘要/Abstract

摘要： 为深入了解核电厂横向多层电缆桥电缆火灾,针对横向多层电缆火焰撞击障碍物形成的溢流火焰融合现象开展试验研究。试验分别在10、14、28、42、56和84 kW等不同火焰热释放速率(HRR)和0.1、0.2、0.3、0.4和0.5 m等不同挡板-燃烧器距离条件下进行。对比分析不同工况下的火焰间歇概率图,引入火焰融合概率来描述火焰融合现象,发现火焰的融合行为可由火焰HRR和挡板-燃烧器距离的比值来量化区分。当比值小于200时,溢流火火焰完全不融合,为不融合区;当比值大于600时,溢流火火焰完全融合,为完全融合区;当比值大于200小于600时,溢流火火焰间歇融合,为间歇融合区。

关键词: 火焰撞击, 障碍物, 溢流火, 火焰融合, 热释放速率(HRR)

Abstract: In order to further study cable fire of multi-layer horizontal cable tray in nuclear power plants, a series of tests for spilled flame merging caused by flame impinging on obstruction were carried out. Experiments were conducted for HRR at 10, 14, 28, 42, 56 and 84 kW and distance between plate and burner at 0.1, 0.2, 0.3, 0.4 and 0.5 m. Then, figure of flame intermittence probability under different conditions were compared and analyzed, and flame merging probability was introduced to describe merging phenomenon. It was found that such behavior can be quantitatively divided according to ratio of HRR to distance between plate and burner. When the ratio is less than 200, it is a non-merging zone as spilled flame does not merge. As the ratio is larger than 600, it will merge constantly, thus a constant-merging zone while between 200 and 600, it merges intermittently, therefore an intermittent-merging zone.

Key words: flame impingement, obstruction, spilled flame, flame merging, heat release rate (HRR)

中图分类号:

X932

邢朝亮, 黄咸家, 何乐, 祝赫, 郑泽铭. 火焰撞击障碍物形成的溢流火焰融合行为研究[J]. 中国安全科学学报, 2021, 31(4): 171-176.

XING Chaoliang, HUANG Xianjia, HE Le, ZHU He, ZHENG Zeming. Experimental study on flame merging behavior of spilled flame generated by flame impinging on obstruction[J]. China Safety Science Journal, 2021, 31(4): 171-176.

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火焰撞击障碍物形成的溢流火焰融合行为研究

Experimental study on flame merging behavior of spilled flame generated by flame impinging on obstruction

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