The fire extinguisher pressure gauge is divided into three areas:
Red area: indicates that the pressure of the dry powder in the fire extinguisher is low, and there is a possibility that it cannot be sprayed or it has failed.
Green area: indicates that the pressure is normal and the fire extinguisher can be used normally.
Yellow area: indicates that the pressure in the fire extinguisher is too high and can be used normally. But there is a danger of blasting and explosion.
What are the specifications of car fire extinguishers?
The fire extinguishing mechanism of dry powder fire extinguishers is chemical suppression, blocking the chain reaction of combustion, high fire extinguishing level, complete functions, rapid fire extinguishing, electrical insulation performance and good low temperature performance, especially suitable for use in factories, warehouses and outdoor configurations. The disadvantage is that the dry powder fire extinguishing agent is not resistant to re-ignition, and users must undergo special technical training. Because of the price advantage, most of the fire extinguishers equipped with vehicles are portable dry powder fire extinguishers.
The fire extinguishing mechanism of ultra-fine dry powder fire extinguishers is the same as that of ordinary dry powder fire extinguishers. It has the advantages of dry powder fire extinguishers, and at the same time has good anti-refire effect and high fire extinguishing efficiency, which is 6-10 times that of ordinary dry powder fire extinguishers. However, the price of superfine dry powder fire extinguishers is also higher than that of ordinary dry powder fire extinguishers. The ultra-fine dry powder has been well developed in the vehicle-mounted automatic fire extinguishing device. At present, the vehicle-mounted ultra-fine dry powder automatic fire extinguishing device has been widely used in bus fire fighting.
The fire extinguishing mechanism of carbon dioxide fire extinguishers is asphyxiation, which implements fire extinguishing by reducing the oxygen concentration of the air around the burning material. As a fire extinguishing agent, carbon dioxide has good insulation properties. However, its shortcomings are: the fire-extinguishing concentration is high, so the fire-extinguishing level is low, and it should be used in a relatively closed space; the ability to resist re-ignition is poor; carbon dioxide is a medium toxic substance, when the concentration of carbon dioxide in the air reaches 2% At times, it will make people feel unpleasant. When the concentration reaches 7% to 9%, it will cause difficulty breathing, vomiting, feeling numb, and confusion. When the concentration reaches 10%, people will lose consciousness if they stay in this environment for one minute. When the carbon dioxide fire extinguisher is used, its local concentration greatly exceeds this concentration. Due to the danger, it is necessary for the owner to be very experienced to equip such a fire extinguisher on the vehicle.
The fire extinguishing mechanism of aqueous film-forming foam (now called water-based) fire extinguisher is cooling and isolation, with high fire-extinguishing level, low water damage during use, neither secondary pollution of dry powder, nor toxicity of carbon dioxide. However, one of the biggest shortcomings of the domestically produced aqueous film-forming foam fire extinguishing agent is that it has poor stability after dilution and cannot be stored for a long time. For a practical fire extinguishing agent, storage stability is one of its most important performance indicators. In comparison, the price of aqueous film-forming foam fire extinguishers is also high.
1. Vehicle-mounted fire extinguishers mainly include dry powder and water-based; water-based (water mist) is recommended;
2. Dry powder fire extinguishers are cheaper and more convenient to store. The vehicle-mounted ones are generally 1KG or less, but the biggest shortcoming of dry powder is that the fire extinguishing efficiency is not high, and it is difficult to clean up when sprayed into the engine;
3.980ml water-based ones are a bit more expensive, but you get what you pay for. Water-based ones can not only be used to extinguish fires, but also can be sprayed on yourself when the car is stuck and cannot be extinguished to form a protective film , Protect yourself and wait for rescue, which is impossible with dry powder, because dry powder is corrosive and it is easy to inhale the respiratory tract and cause harm;
4. On the whole, it is more practical to choose water-based vehicle fire extinguishers, after all, there is only one life, so take safety measures. Car fire extinguishers should be checked and repaired to ensure that they can be used at all times
5. The most important point is that no matter what fire extinguisher you buy, do not put it in the trunk. It must be placed in the cab. When an accident occurs, every minute and every second is critical. It must be placed in the cab for easy access and timely fire fighting. ,Recover damages.
The fire extinguisher is the first firefighter when the car is on fire. Although my country does not currently require private cars to be equipped with fire extinguishers, private cars should bring their own fire extinguishers to prevent problems. According to the model and size of the car, it is of great benefit to your safety and your car to be equipped with a suitable fire extinguisher in terms of economy, safety and efficiency. Finally, it is recommended that car owners and friends, in order to spend the summer safely, it is best to put "spontaneous combustion insurance" for the car (especially in areas with higher summer temperatures in southern my country).
1. Under normal circumstances, ordinary cars should be equipped with at least one medium-sized fire extinguisher. Drivers can choose 3 to 5 liters of ABC dry powder fire extinguisher or clean water foam fire extinguisher, while large passenger cars and trucks should be equipped with several large fire extinguishers accordingly.
2. And the relevant regulations also have clear instructions: 1 ABC (A solid, B liquid, C gas) dry powder fire extinguisher with more than 4 kg for 11 seats, and 2 ABC dry powder fire extinguishers for more than 11 seats.
3. Generally, it is best to use 1kg ABC dry powder fire extinguisher. It is light and convenient. It extinguishes quickly at critical moments. It is generally used in the initial stage of fire and it is easier to put out the fire. It is best to put a three kilogram dry powder fire extinguisher in the trunk.
4. Vehicle fire extinguishers are different from household fire extinguishers. Firstly, they are different in size, and secondly, they are also different in design. For example, vehicle fire extinguishers have also been specially treated when they are designed to prevent the vehicle from violent vibration or bumps. The two liquid medicines are mixed.
5. The placement of fire extinguishers is also very important. Do not place them randomly to bring unnecessary hidden dangers to safety, especially some careless friends need to pay more attention. Getting used to it is the best protection for safety.