Coal mine trackless rubber wheelbarrow plays an important role in underground transportation, but due to its special working environment, the fire risk is high. Therefore, it is of great significance to study the principle of its automatic fire extinguishing system to ensure the safe production of the mine.

I. Analysis of fire causes

The main causes of trackless rubber wheelbarrow fire can be summarized as follows:

Accumulation of oil and sludge: the vehicle surface and the engine compartment is easy to accumulate oil and sludge, these flammable substances in the high temperature conditions are easy to cause fire.

Disorganized cable and hose arrangement: Improper arrangement of cables and hoses may lead to abrasion or short-circuiting and become a potential source of fire.

High temperature in the engine compartment: The temperature in the engine compartment is too high, if it is not cooled down in time, it may ignite the surrounding combustible materials.

Second, the principle of automatic fire extinguishing system

For the above causes of fire, the design of automatic fire extinguishing system should consider the following principles:

Temperature monitoring and early warning: install temperature sensors in the engine compartment to monitor temperature changes in real time. When the temperature exceeds the set threshold, the system automatically sends out a warning signal.

Automatic fire extinguishing start: Once the temperature is abnormal, the system starts the fire extinguishing device through the controller and quickly sprays the extinguishing agent. Commonly used extinguishing agents include dry powder, gas and water-based extinguishing agents.

Manual intervention function: In addition to automatic fire extinguishing, the system should also be equipped with a manual start device to facilitate the operator to intervene in emergency situations.

Third, the common types of automatic fire extinguishing system

Dry powder fire extinguishing system: the use of dry powder extinguishing agent to quickly extinguish the fire, applicable to the initial fire.

Gas fire extinguishing system: the use of inert gases, such as carbon dioxide, inhibit the combustion process, suitable for confined spaces.

Water-based fire extinguishing system: Reduce the temperature and isolate oxygen by spraying water mist, applicable to most fire scenarios.

Application Examples

Take the fire extinguishing device for mining explosion-proof rubber wheelbarrow of Zhongdao Fire Protection as an example, the system monitors the temperature of the engine compartment through the temperature sensor, and when the temperature exceeds the set value, it automatically starts the fire extinguishing device and sprays the extinguishing agent to extinguish the fire. 

V. Conclusion

The automatic fire extinguishing system of trackless rubber wheelbarrow for coal mine effectively reduces the fire risk and ensures the safe production of the mine through the combination of real-time monitoring, automatic response and manual intervention. With the progress of technology, the future automatic fire extinguishing system will be more intelligent and efficient.