Influence of Nozzle Height on Water Mist Fire Extinguishing System in Railway Tunnel Rescue Station

摘要

In order to study the fire extinguishing performance of fixed water-mist fire extinguishing system in railway tunnel rescue station, a water-mist fire extinguishing system is arranged in the tunnel model with length of 30 m × width 6 m × high 6 m. According to the actual railway tunnel top of the laying of 25 kV high-voltage power cable, water-mist nozzle installation can only be installed in the side and the characteristics of oil transport trains. On the installation of both sides of the tunnel height of 1.5 m and 4.5 m at the water mist nozzle were fire test, comparative extinguishing effect and cooling effect, and provide reference for the related engineering application of setting the water-mist fire extinguishing system in the railway tunnel rescue station.