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Coal yard safety monitoring plays an important role in preventing coal fires
There are many cases in the construction of circular material yards in domestic thermal power plants and coal chemical plants. Compared with traditional open-pit coal storage, closed coal storage in circular material yards can effectively reduce dust pollution and reduce the loss of coal in the storage process. Has been widely used. However, in the prior art, the use of a circular material yard or the like for closed coal storage has a large safety hazard. Due to the long storage time of flammable coal, the coal storage temperature rises, which leads to spontaneous combustion, and even the flammable gas generated by spontaneous combustion of the coal pile causes an explosion. In order to prevent such situations from occurring, it is particularly important to use the coal yard safety monitoring system to monitor the gas and temperature data in the closed coal yard such as the circular material yard in real time, and to provide timely and effective safety warning.
In view of the fact that the domestic silo storage coal has been on fire many times, there are even cases where the silo explodes. In order to prevent the accident of flammable gas in the silo, or due to the long time of storage of flammable coal, the temperature of coal storage and spontaneous combustion will occur, and the temperature, flammable gas and CO of the silo need to be stored. Gas, smoke and other parameters are monitored to ensure that their operating parameters are within safe control. If a parameter exceeds the allowable range, the alarm signal will be sent immediately, prompting the operating personnel to take necessary measures to eliminate the hidden dangers and ensure the safety of operation.
The coal yard safety monitoring system includes four parts: infrared scanning temperature measurement system, coal yard side wall temperature monitoring system, flammable gas detection system and coal yard fuel safety information platform.
The characteristics of the coal mine safety monitoring system are as follows:
1. Fire prevention in the first place: The combustion of coal is caused by spontaneous combustion. The system can provide early warning before the coal temperature reaches the ignition point, and reduce the spontaneous combustion loss to a large extent.
2, accurate positioning of the fire point: the system can point, help the plate-making personnel to quickly extinguish the fire.
3, large space non-contact fire prevention: only a few probes, you can complete real-time fire monitoring of large space. No need to touch the working surface during the monitoring process, no matter the installation or daily maintenance.
4. High degree of automation: The system does not require manual intervention and manual inspection. In the case of no operation, the system will automatically record the normal operation status and fault condition of the temperature measurement target, and will automatically alarm when the monitored facility fails. Realize the whole process of automation.
In order to further strengthen the safety monitoring of power plant engineering, ensure the safety of personnel and smooth production, the coal yard safety monitoring system can be developed through the combination of infrared thermal image monitoring technology, flammable gas monitoring technology and artificial intelligence expert diagnosis system. Early detection of self-heating and spontaneous combustion signs of coal piles, judging self-heating and spontaneous combustion, realizing on-line monitoring of spontaneous combustion of coal piles, reducing serious threats to production safety caused by coal-fired temperatures, to ensure normal operation of thermal power plants and coal chemical plants produce.
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