基于远程监测的轨道交通气体灭火系统研究

Research on gas fire extinguishing system of rail transit based on remote monitoring

为在较短时间内解决轨道交通网络内的火灾问题,避免因火势蔓延而影响周围区域的交通安全,针对基于远程监测的轨道交通气体灭火系统展开研究。通过分析气体灭火介质组成成分的方式,定义STM32远程驱动程序连接形式,再借助关联性系数,计算管网阻力损失量的具体数值,实现基于远程监测的气体灭火系统管网建模。在主控电路元件的调试作用下,调节减压装置与泄压阀设备的实际连接状态,完成轨道交通气体灭火系统的应用结构设计。实验结果表明,在远程监测程序的作用下,灭火管道中气体流速的最大值达到了2.816 8 mL/min,与IG541混合气体灭火系统相比,该项指标参量的数值水平出现了明显增大的变化趋势,能够缩短轨道交通网络内火灾现象的持续时间,从而解决因火势蔓延对交通安全造成的威胁性问题。

In order to solve the fire problem in the rail transit network in a short time and avoid affecting the traffic safety of the surrounding area due to the spread of fire, the rail transit gas fire extinguishing system based on remote monitoring is studied. By analyzing the composition of gas fire extinguishing medium, the connection form of STM32 remote driver is defined, and then the specific value of pipe network resistance loss is calculated with the help of correlation coefficient, so as to realize the official website modeling of gas fire extinguishing system based on remote monitoring. Under the commissioning of main control circuit elements, adjust the actual connection state of pressure reducing device and pressure relief valve equipment, and complete the application structure design of rail transit gas fire extinguishing system. The experimental results show that under the action of remote monitoring program, the maximum value of gas velocity in fire extinguishing pipeline reaches 2.8168 ml/min. Compared with IG541 mixed gas fire extinguishing system,, the numerical level of this index parameter shows a significant increasing trend, which can shorten the duration of fire phenomenon in rail transit network, so as to solve the threat to traffic safety caused by fire spread.