FROTH GENERATING UNIT TO EXTINGUISH FIRE THROUGH BOREHOLES Russian patent published in 1996 - IPC

FIELD: bore drilling, mining, well operation. SUBSTANCE: froth generating unit to extinguish fire through borehole has a case in the form of tube with supply pipes for components, attractable pipeline with supports and spray heads placed inside casing string, froth generating network, discharge header for fluid phase of components made as one part together with front support and flexible pipes of different length. Central flexible pipe is connected to the header along lengthwise axis of the attractable pipeline, and the rest of those are inclined. Sprayers with fan-shaped nozzles are placed on ends of flexible pipes. EFFECT: high reliability in fire extinguishing. 2 cl, 4 dwg