2. Asphyxiation: After the water mist is sprayed into the fire, it quickly evaporates to form steam, and its volume expands rapidly, reducing the oxygen volume fraction, forming a barrier around the combustion products and blocking the intake of fresh air. With the rapid vaporization of water, the water vapor content will increase rapidly. When the oxygen content in the space around the fire source decreases to 16% ~ 18%, the flame will suffocate. In addition, the droplets in the non-combustion area outside the fire field will not vaporize, and the oxygen content in the air will not change, which will not endanger people's lives.
3. Shielding radiant heat: After the high-pressure water mist is sprayed into the fire, the steam formed by evaporation quickly covers the combustion products, flames and smoke streams, which has excellent shielding ability to the radiant heat of the flame and can effectively inhibit the radiant heat from igniting other objects around, thus achieving the effect of preventing the flame from spreading. The attenuation effect of water mist on radiation can also be used to protect the lives of firefighters.
4. Wetting: droplets with large particles and large impulse will impact the surface of combustion products, thus wetting the combustion products and preventing the further generation of solid volatile combustible gas, thus achieving the purpose of fire extinguishing and preventing the fire from spreading. In addition, high-pressure water mist also has the functions of washing smoke and waste gas, emulsifying and diluting liquid. Safety and environmental protection-Physical fire extinguishing with water as fire extinguishing agent does not cause any damage or pollution to the environment, the protected object and the people in the protected area.
Efficient fire extinguishing-the cooling speed is faster than that of general sprinkler system 100 times. High-pressure water mist is also penetrating, which can solve the problem of total flooding and shielding, and can also prevent the recurrence of fire.
Purification function-it can purify smoke and waste gas, which is beneficial to the safe evacuation of personnel and the fire fighting and rescue work of firefighters.
Shielding radiant heat-it has a good shielding effect on thermal radiation, thus preventing the fire from spreading and controlling the fire quickly.
The water damage loss is small-the water consumption is only 1-5% of the water spraying system, which avoids the damage to equipment and the secondary pollution to the environment caused by a large amount of drainage.
Good electrical insulation-can effectively put out the fire of live equipment.
High reliability-after the system is installed, the system can be simulated and tested to increase the reliability of the system action.
Long service life of the system-the pumps, valves and accessories used are made of corrosion-resistant materials, and the service life of the system can be as long as 30(60) years.
Flexible preparation-it can be used locally to protect independent facilities or some facilities; As a fully submerged system, protect the whole space.
Simple installation-Compared with the traditional fire extinguishing system, the pipe diameter is smaller, only 10-32mm, which correspondingly reduces the installation cost.
Convenient maintenance-the fire extinguishing agent only uses water, and it is at normal pressure in standby state, so the daily maintenance workload and cost are greatly reduced. High pressure single liquid water mist fire extinguishing system is suitable for extinguishing Class A, Class B, Class C and electrical fires. Because of its advanced fire extinguishing mechanism, its use is basically not limited by places, and it can be applied on land, sea and space. It is especially suitable for local protection in high-risk situations and protection of closed spaces. Such as: petrochemical industry, military equipment, coal industry, medicine, food processing industry, ancient buildings, archives, commercial and residential buildings, subways, tunnels, large vehicles, surface ships, aerospace, electric power, electronics industry, fire brigade and forest police.