01Normal high pressure fire water supply system
Sufficient pressure and fire water consumption should always be maintained in the pipe network of the normal high pressure fire water supply system. When a fire occurs, the on-site personnel can take out the hose and the water gun from the nearby fire hydrant box, connect the hose to the fire hydrant port, connect the water gun, open the valve of the fire hydrant, and directly discharge water to extinguish the fire.
02 Temporary high-pressure fire water supply system
A fire pump is installed in the temporary high-pressure fire water supply system, and the pressure in the pipe network is usually low. When a fire occurs, the on-site personnel can take out the hose and water gun from the nearby fire hydrant box, connect the hose to the fire hydrant port, connect the water gun, open the valve of the fire hydrant, and notify the water pump room to start the fire pump to make the pipe network When the internal pressure reaches the water pressure requirement of the high-pressure water supply system, the fire hydrant can be put into use. When the high-pressure or temporary high-pressure water supply system is used outdoors, it should be used together with the indoor fire-fighting water supply system. The independent outdoor temporary high-pressure fire-fighting water supply system should use a pressure-stabilizing pump to maintain the water filling and pressure of the system.
03 Low pressure fire water supply system
The pressure in the pipe network of the low-pressure fire water supply system is low. When a fire breaks out, the firefighters open the nearest outdoor fire hydrant, connect the fire truck to the outdoor fire hydrant, absorb water from the outdoor pipe network and add it to the fire truck, and then use the fire truck to directly add water to the fire truck. Pressurize the fire, or use the fire engine to pressurize the water supply to the indoor pipe network through the water pump adapter.
Low-pressure fire-fighting water supply system should be used outdoors of buildings. When municipal water supply pipe network is used, two-way fire-fighting water supply should be used. Except for residential buildings with a building height exceeding 54m, one-way fire-fighting water supply can be used when the design flow rate of outdoor fire hydrants is less than or equal to 20LA, and Outdoor fire hydrants shall be directly supplied with water by the municipal water supply network.
