地铁轨顶均匀排风系统及协同站台火灾排烟研究

消防科学与技术 ›› 2021, Vol. 40 ›› Issue (8): 1161-1165.

地铁轨顶均匀排风系统及协同站台火灾排烟研究

邱少辉，车轮飞，刘宇圣，杨晨磊

中铁第四勘察设计院集团有限公司，湖北武汉 430063

出版日期:2021-08-15 发布日期:2021-08-15
作者简介:邱少辉（1982-），男，湖北襄阳人，中铁第四勘察设计院集团有限公司高级工程师，硕士，主要从事城市轨道交通及铁路等公共交通中通风空调、给排水及消防专业的设计及研究工作，湖北省武汉市武昌区和平大道745号中铁第四勘察设计院集团有限公司城地院暖通所，430063。

Research on uniform exhaust of rail-top heat exhaust system of subway station and cooperative smoke exhaust system for platform fire

QIU Shao-hui, CHE Lun-fei, LIU Yu-sheng, YANG Chen-lei

China Railway SIYUAN Survey And Design Group Co.,Ltd., Hubei Wuhan 430063, China

Online:2021-08-15 Published:2021-08-15

摘要/Abstract

摘要：

采用Fluent模拟软件，分别对6节编组和8节编组地铁车站轨顶排热风口采用45°嵌装式调节阀调节形成的均匀排风及其在站台火灾工况下的协同排烟效果进行了研究。研究结果表明，两种形式的车站在轨顶排热风口处通过安装调节阀调节后，轨顶排热系统的排风量均随着排风压力的增大而增加；同一排风压力下，轨顶排热系统形成的总排风量，在轨顶排热风口处安装调节阀的方式均高于安装插板阀；采用调节阀各风口间不均衡率可保持在5%以内，实现了均匀排风，而采用插板阀各风口不均衡率则超过了20%，无法实现各风口间风量的均衡。两种形式的车站，通过安装调节阀形成的轨顶均匀排热系统在站台发生火灾时，车站站台每组楼扶梯口部均能形成向下不小于1.5 m/s阻止烟气向上蔓延的阻挡气流，轨顶侧排烟口处风量未超过最大允许排烟量，满足规范相关要求，协同站台火灾排烟方案有效可行。

关键词: 轨顶排热系统, 不均衡率, 均匀排风, 轨顶侧排烟口, 协同站台火灾排烟

Abstract:

Fluent was used to analyze the uniform exhaust generated by the adjustment of the 45° built-in regulating valve at the rail-top hot air outlets of the 6-section and 8-section subway stations and the coordinated smoke exhaust effect under the platform fire condition. The research results showed that the exhaust air volume of the rail-top heat exhaust system increases with the increase of exhaust air pressure after the two types of stations are adjusted by the regulating valve at the rail-top hot exhaust outlet. The total exhaust air volume formed by the regulating valve at the rail-top hot air outlet is higher than that formed by the flapper valve under the same exhaust pressure.When the regulating valve is used, the unbalance rate between the outlet can be kept within 5%, which can realize uniform air exhaust.While the unbalance rate of the outlet is more than 20% when the flapper valve is used, and the balance of the air volume between the outlet cannot be achieved. When a fire occurs on the platform of the two types of stations, by the rail-top uniform heat removal system with regulating valve, each stairway of the station platform can form the blocking air flow that is not less than 1.5m/s to prevent the smoke from spreading upwards, the air volume at the exhaust outlet on the top side of the rail does not exceed the maximum allowable smoke exhaust, which meets the relevant requirements of the specification. Cooperative platform fire smoke exhaust program is effective and feasible.

Key words: , rail-top heat exhaust system, unbalance rate, uniform exhaust, rail-top side smoke outlet, cooperative smoke exhaust

邱少辉, 车轮飞, 刘宇圣, 杨晨磊.

地铁轨顶均匀排风系统及协同站台火灾排烟研究 [J]. 消防科学与技术, 2021, 40(8): 1161-1165.

QIU Shao-hui, CHE Lun-fei, LIU Yu-sheng, YANG Chen-lei.

Research on uniform exhaust of rail-top heat exhaust system of subway station and cooperative smoke exhaust system for platform fire [J]. Fire Science and Technology, 2021, 40(8): 1161-1165.