The automatic fire suppression system for open-pit mining trucks is an intelligent fire extinguishing device that integrates fire detection technology, warning technology, and sprinkler technology. It can automatically monitor and warn of potential fire hazards in mining trucks in real time, and achieve automatic and efficient fire extinguishing through active defense measures. This system is customized for the characteristics and operating environment of open-pit mining trucks, and can meet the fire protection needs of different types of coal mining vehicles such as mining dump trucks, mining trucks, support handling vehicles, and loaders. It effectively improves the efficiency and timeliness of extinguishing mining truck fires, making vehicle fire extinguishing simpler and more convenient.

1、 Intelligent warning technology

a. Fire source detector layout

The automatic fire suppression system for open-pit mining cars constructs a comprehensive fire monitoring network by reasonably arranging fire detectors in key parts of the mining car. Temperature detectors are installed in high-temperature areas such as engine compartments and hydraulic systems to monitor temperature changes in real time. These detectors can sensitively capture the signs of fire hazards and provide accurate data support for early warning.

b. Warning signal processing

The control unit of the automatic fire suppression system for open-pit mining cars receives real-time fire signals within the vehicle protection area and analyzes the signals using advanced intelligent algorithms. When the received fire signal reaches the set danger value, the system will automatically execute warning instructions. The warning methods include sound and light alarms and remote monitoring terminal alarms. Sound and light alarms can promptly alert on-site operators, while remote monitoring terminal alarms enable management personnel to grasp the safety status of the mining truck in real time and make timely and effective responses while staying away from the scene.

2、 Intelligent fire extinguishing technology

a. Selection of fire extinguishing agents

According to the type of fire and operating environment of coal mine vehicles, the system selects appropriate fire extinguishing agents. For electrical equipment fires, non-conductive fire extinguishing agents such as perfluorohexane are often used to avoid secondary accidents caused by conductive fire extinguishing agents; For fires caused by fuel leaks, choose fire extinguishing agents that can quickly cut off the combustion chain, such as ultra-fine dry powder, to quickly extinguish the fire source. These fire extinguishing agents have the characteristics of high efficiency and environmental friendliness, and can meet the fire extinguishing needs of different fire scenarios.

b. Fire extinguishing device activation and spraying

When the warning mechanism confirms the occurrence of a fire, the system quickly activates the fire extinguishing device. The fire extinguishing agent control valve body opens under the action of driving force, and is instantly released into the protective space through the pre laid specialized pipeline for the agent. The nozzle is specially designed to evenly and quickly spray the fire extinguishing agent onto the ignition area, ensuring maximum fire extinguishing effect. For example, in an engine compartment fire, the system can accurately spray fire extinguishing agents into the engine interior, quickly reduce temperature, isolate oxygen, and effectively control the spread of the fire.

In addition, the automatic fire suppression systems for open-pit mining cars have significant advantages over traditional vehicle automatic fire extinguishing devices in terms of unmanned, intelligent, efficient, and real-time capabilities. It is capable of continuous and uninterrupted fire monitoring of flammable areas such as the engine compartment and on-board distribution box of vehicles, achieving precise detection and response in the early stages of a fire, and automatically activating the fire extinguishing device to quickly extinguish the fire, effectively achieving unmanned and automated fire extinguishing. The system adopts customized design, which can design passive and non electric vehicle mechanical automatic fire extinguishing devices and remote real-time monitoring electronic automatic fire extinguishing devices according to different operating environments, protective spaces, and fire extinguishing requirements, to meet the different protection needs of various vehicle types in different environments. At the same time, the system has a compact structure and occupies a small space. It adopts fixed point or line detection methods, which can quickly and accurately detect fires, effectively solving the problem of extinguishing fires in small spaces inside mining cars, shortening fire detection time, and improving fire extinguishing efficiency.

In summary, the automatic fire suppression systems for open-pit mining trucks, as an important component of smart fire protection systems, play a crucial role in the safe production of coal mine vehicles. The design concept of integrating intelligent warning and fire extinguishing has achieved early detection, rapid response, and efficient extinguishing of open-pit mine truck fires, providing comprehensive safety guarantees for coal mining enterprises. In the future, with the continuous advancement of technology, automatic fire suppression systems for open-pit mining cars will develop towards a more intelligent, efficient, and environmentally friendly direction, thereby creating a safer and more reliable environment for coal mine safety production and promoting the sustainable development of the coal mining industry.