Coal mine air compressor automatic fire extinguishing system device: intelligent safety protection of the innovation practice
1、Industry background and demand pain point
The underground environment of coal mines is complicated, with high temperature, high humidity, gas and coal dust accumulation and other significant problems. As the core power source of mine ventilation, equipment drive and other key links, air compressors are in a state of long-term high-load operation, and are prone to friction due to mechanical friction, leakage of oil or circuit failures that may lead to fires. The traditional means of fire extinguishing rely on manual inspection and manual operation, there are problems such as lagging response, covering many blind areas, etc., and it is difficult to meet the stringent requirements of mine safety production. For this reason, Golden Mean Fire-Fighting has developed an automatic fire extinguishing system for air compressors in coal mines, which provides an efficient solution for the safety of mining equipment through intelligent monitoring and precise fire extinguishing technology.
2、System structure and technical principle
The device is specially designed for mining air compressors, integrating fire warning, automatic fire extinguishing and remote management, and the core technology modules include:
Multi-dimensional fire detection system
Flame detectors, thermal imagers, temperature sensors and smoke detectors are used to realize real-time monitoring of key parts of the air compressor (e.g. motor, oil circuit, gas storage tank). The flame detector prioritizes the identification of the fire source, the thermal imager further analyzes the fire range, and the combination of temperature and smoke data forms a multi-level warning mechanism.
Hierarchical response strategy: when the temperature is abnormal or the smoke concentration exceeds the standard, the system triggers sound and light alarms and uploads the data to the mine monitoring center synchronously to buy time for manual intervention; if the fire reaches the preset threshold, the fire extinguishing procedure is automatically initiated.
Precise fire extinguishing execution module
Extinguishing agent selection: Perfluorohexanone is the core extinguishing agent, which is non-corrosive, non-residual, environmentally friendly and non-toxic, and can quickly vaporize and absorb heat at 49℃ to achieve efficient cooling and asphyxiation, which is especially suitable for fighting electrical fires and oil fires.
Intelligent spraying control: Through multi-nozzle graded spraying technology, the flow of extinguishing agent is dynamically adjusted according to the location and area of the fire source. For example, for different flammable areas of the air compressor (such as motor compartment and oil interface), the first and second spraying parts with different area coverage are adopted, which reduces the waste of extinguishing agent and improves the utilization rate of resources.
Passive and powerless design: the device does not need external power supply and relies on mechanical temperature sensing to start, which circumvents the risk of downhole circuit failure and reduces maintenance costs at the same time.
Integrated intelligent management platform
The system is networked with the mine monitoring center, supporting remote real-time viewing of equipment status, alarm records and extinguishing agent inventory, and adjusting fire extinguishing priority (e.g., prioritizing the protection of core components) through the controller.
The data retrospective function can analyze the fire occurrence pattern and provide decision-making basis for equipment maintenance and safety management.
3、Core advantages and innovative value
Rapid response and efficient fire extinguishing
The system can start the fire extinguishing procedure within 3 seconds after the fire occurs, which improves the response speed by more than 80% compared with the traditional means, and the extinguishing agent accurately covers the fire source area, with an extinguishing efficiency of 95%.
The rapid vaporization of perfluorohexanone can quickly reduce the temperature of the fire to below the ignition point, avoiding the risk of re-ignition.
Safe Design for Complex Environment
The device has passed MA/KA mining product dual certification, and the key components are made of explosion-proof material, which is suitable for underground flammable and explosive environment.
Redundant power supply design (lithium battery + intrinsically safe power supply) ensures stable operation under extreme working conditions.
Energy saving, environmental protection and economic benefits
Perfluorohexanone has no residue after extinguishing the fire, no corrosion to the equipment, reduces downtime for maintenance, and reduces the annual downtime rate by 60%.
Modular design supports customized expansion, adapted to different models of air compressors, a single system can cover more than one piece of equipment, comprehensive cost savings of more than 30%.
4、Application Cases and Industry Impact
Golden Mean Fire-Fighting's automatic fire extinguishing system has been successfully applied in several large coal mines:
A coal mine group: after deploying the system in the underground air compressor room, it successfully extinguished the initial fire caused by oil leakage and avoided direct economic losses of over 3 million RMB.
Open-pit coal mine: centralized monitoring and control of the air compressor group is realized through the system networking management, the annual fire accident rate is reduced by 75%, and the safe production cycle is significantly extended.
5、Future Development Trend
With the advancement of smart mine construction, Golden Mean Fire-Fighting is further integrating 5G communication and edge computing technologies, and plans to realize intelligent upgrading of fire prediction and multi-equipment cooperative fire fighting. For example, it will train AI models through thermal imaging data to predict the risk of equipment overheating in advance; meanwhile, it will develop multi-area joint fire-fighting strategies to enhance the ability of preventing and controlling large-scale fires.
