Analysis of fire characteristics of new energy mine cars
1. Difficulty in handling: After a fire occurs, it is easy for the driver or passengers to get electric shock. And when the negative electrode of the battery comes into contact with air, it is prone to violent oxidation, which increases the probability of explosion and virtually increases the difficulty of handling.
2. Long fire extinguishing time: There are a large number of combustible objects in new energy vehicles. In a free burning state, the flame can last for about 90 minutes, and the maximum temperature can reach 916°C, which is easy to cause large-scale combustion. Conventional fire extinguishing agents do not have ideal fire extinguishing effects and are difficult to act directly on the fire point, so the fire extinguishing task takes a long time.
3. Fast burning speed: It only takes 6 seconds for the battery to go from showing signs of burning to burning violently, and the flame injection distance is far away, which can reach 5m away. During the burning process, there are a lot of splashes scattered around, and a large amount of Ethers, alkenes, alkanes and other substances, some of which are toxic.
The advantages of mine car automatic fire extinguishing system in protecting new energy mine car fires:
1. Extinguish fire quickly
When the system detects a fire, the device responds quickly and starts, spraying perfluorohexanone fire extinguishing agent in a directional manner towards the fire in the protective area, rapidly cooling the ignition point such as the battery inside the new energy mining car while blocking the combustion chain reaction, achieving physical The dual fire extinguishing method with chemical fire extinguishing can achieve efficient fire extinguishing in a few seconds. Compared with traditional fire extinguishing methods, the fire extinguishing effect is more significant, more stable and safer.
2. Rapid cooling
Perfluorohexanone fire extinguishing agent has good permeability and can quickly penetrate into combustible materials in a short time, quickly blocking the decomposition of burning materials. At the same time, through the process of perfluorohexanone converting from liquid to gaseous state, it quickly absorbs heat. Quickly reduce fire temperature.
3. High safety in use
Perfluorohexanone fire extinguishing agent is non-toxic, non-corrosive, has strong electrical insulation, non-conductivity, and is environmentally friendly. It does not cause any harm to the human body and can be used to extinguish fires in inhabited environments. At the same time, after fire extinguishing, it will not cause damage to the atmospheric ozone layer and will not cause secondary pollution to the equipment.
4. Suppress re-ignition
Perfluorohexanone fire extinguishing agent can continuously cool down and effectively suppress the re-ignition of fire, achieving 24-hour long-term suppression and non-re-ignition effect in the protected area.
5. Wide application
Because of its efficient, stable and reliable fire-extinguishing properties, perfluorohexanone fire extinguishing agent has been widely used in new energy mine trucks, distribution rooms, substations, power plants, energy storage power stations, computer rooms, data centers and other fields.
