The invention relates to the technical field of fire fighting, in particular to a subway ventilation system fire automatic switching device which comprises an air duct, the air duct is of a vertically-through square cylindrical structure, the lower end of the air duct is an air inlet, the upper end of the air duct is an air outlet, and a fireproof ventilation device is installed in the air duct. The fireproof and smoke exhaust requirements are effectively balanced, a certain ventilation quantity can be kept to assist in smoke exhaust at the initial stage of a fire disaster or under the condition that the fire behavior is small, fire spreading can be effectively stopped through the fireproof row plates arranged in a staggered mode, and double guarantees are provided for safety of a subway system. Along with the increase of fire behavior and the rise of environment temperature, once the melting point of the thermosensitive melting rod is reached, the device is automatically switched to a complete fireproof mode, and the safety of a subway system is further ensured.
本发明涉及消防技术领域,具体为一种地铁通风系统火灾自动切换装置,包括风道,风道为上下贯通的方形筒状结构,风道的下端为进风口、上端为出风口,风道内部安装有防火通风装置。本发明有效平衡了防火与排烟的需求,在火灾初期或火势较小的情况下,它既能保持一定的通风量以辅助排烟,又能通过交错排列的防火排板有效阻挡火势蔓延,为地铁系统的安全提供了双重保障。随着火势的增大和环境温度的升高,一旦达到热敏熔杆的熔点,装置将自动切换到完全防火模式,进一步确保地铁系统的安全。
Subway ventilation system fire automatic switching device
一种地铁通风系统火灾自动切换装置
2024-12-13
Patent
Electronic Resource
Chinese
Numerical Simulation of Fire Smoke Flow Characteristics in Subway Tunnel with Natural Ventilation
British Library Conference Proceedings | 2009
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