ZHANG Yan-yan,CAO Wei-xin,LU Ji-cheng,et al.Discussion on Design of Ultra-fine Dry Powder Automatic Fire Extinguishing System in Utility Tunnel[J].China Water & Wastewater,2020,36(22):136-140.
综合管廊超细干粉自动灭火系统设计探讨
- Title:
- Discussion on Design of Ultra-fine Dry Powder Automatic Fire Extinguishing System in Utility Tunnel
- Keywords:
- utility tunnel; ultra-fine dry powder fire extinguishing system; fully submerged extinguishing system
- 摘要:
- 超细干粉自动灭火装置是一种较为主流的综合管廊消防设施。国家标准未有针对超细干粉自动灭火系统的规定，而各地方标准的参数选择差距较大，因此在用于综合管廊时，超细干粉灭火系统的设计原则和细节参数无法达成广泛一致。针对上述问题，对比国家标准和各地方标准，认为在综合管廊中，超细干粉系统宜采用全淹没式超细干粉自动灭火系统；计算综合管廊超细干粉灭火剂用量时，可采用灭火剂用量=灭火剂设计浓度×容积×补偿系数的计算方法，危险等级可定义为中危险级；设计浓度和其他设计参数的选取应根据地方标准选择。
- Abstract:
- Ultra-fine dry powder fire extinguishing systems are popular fire-fighting facilities in utility tunnel now. However, the provisions of the national standard were not carried out, and the local standard parameters were quite different. So it was impossible to reach the widespread agreement on the design principles and detailed parameters for ultra-fine dry powder system fire extinguishing system in the utility tunnel. In view of these problems, with comparison of the national standards and local standards, it was considered that in utility tunnel, the ultra-fine dry powder systems should adopt fully submerged ultra-fine dry powder automatic fire extinguishing system. When calculating the dosage of ultra-fine dry powder extinguishing agent, the method of calculating dosage = the design concentration × volume × compensation coefficient could be used. Hazard level should be defined as medium hazard level. The selection of design concentration and other parameters should be based on local standards.
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