| 摘要 |
FIELD: fires elimination; methods of fires elimination in the gallery premises. ^ SUBSTANCE: the invention is pertaining to the field of the processes of the fire elimination at the plants of power, and may be used in the galleries in the fuel feeding systems. The technical result of the invention is increased reliability and safety of elimination of the deflagration burning of the fuel dust, reduction of the duration of elimination of burning and the volume of the fed liquid. The result is reached due to the fact, that the method of elimination of the deflagration burning in the gallery premises provides for the recording of inflammation by the sensor units, the signals processing, feeding of the command signal to the executive body with the subsequent initiation of feeding of the fire-extinguishing liquid into the room in compliance with the solution. The feeding of the fire-extinguishing liquid at the first stage conduct in the form of the hydraulic screen in the areas, which are beyond the limits of the inflammation with the possibility to overlap the cross section of the room. At the second stage realize the feeding of the liquid in the burning zone. At that the hydraulic screen is kept for the time TScr = k(L/V), where: TScr - a time span of feeding of the fire-extinguishing liquid, s; V - the speed of deflagration burning of the fuel dust, m/s; L - the length of the section of the in the gallery between the hydraulic screen, m; k - the assurance factor (0.1-1.2); feeding of the liquid in the burning zone is exercised through the sputtering injectors with the irrigation of the section between the boundaries of the hydraulic screen coverage with consumption of the liquid of 0.1-0.5 l per 1 square meter of the area. At that the feeding of the liquid at the second stage in the burning zone is exercised with the sequential irrigation of the room in direction from the hydraulic screen boundaries to the center of the burning area maintaining the time of irrigation of no less than 2.0 TScr. ^ EFFECT: the invention ensures the increased reliability and safety of elimination of the deflagration burning of the fuel dust, reduction of the duration of the burning elimination and the volume of the fed liquid. ^ 5 cl |
