Research on Multi-device Coupling Fire Warning Experiment of High-bay Tobacco Warehouse
The effectiveness of the automatic fire alarm system of high-bay tobacco warehouse was studied through the 1/4 scaled model experiment in which the influence of the special shielding structure formed by the ceiling,end wall,side wall,shelves and goods of the high-bay tobacco warehouse on the early-stage smoke spread law of the fire was analyzed,6 automatic fire alarm system coupling schemes were proposed based on the fire detector early warn-ing situation under different fire source locations.The results show that when the fire source is located in the bottom layer,the smoke sticks to the shelves and the side of the goods in the vertical spreading process,and forms the anti-buoyancy wall jet after hitting the end wall;when the fire source is located on the top floor,the cavity of the special shielding structure becomes the smoke storage area,and there is no anti-buoyancy wall jet in the early stage of the fire.The automatic fire alarm system composed of the inspiratory smoke detector and the linear temperature fire detector has shorter alarm response time,lower environmental sensitivity and higher response effectiveness.The automatic fire alarm system composed of linear temperature detector and image fire detector has detection blind spots,high environmental sensitivity and low response effectiveness.
万方数据
维普
