SYSTEM OF LAYER-BY-LAYER FIRE EXTINGUISHING IN VOLATILE FLAMMABLE LIQUID RESERVOIRS AND VIBRATION FOAM GENERATOR Russian patent published in 2011 - IPC A62C3/06 A62C5/02 

FIELD: fire fighting equipment.

SUBSTANCE: invention relates to fire fighting equipment. A system of layer-by-layer fire extinguishing in volatile flammable liquid (VFL) reservoirs comprises a reservoir wherein a fire extinguishing system is built in; and on the perimeter of the reservoir, at the top there is sunk a thermal sensitive cable functioning as a sensor controlling VFL temperature build-up in the reservoir which has at least four inputs with an actuator system of foam supply presented as a servovalve, a safety membrane, a check valve and a vibration foam generator connected to a foaming agent solution supply system; thus one foam nozzles are located at the bottom of the reservoir layer-by-layer, and the other foam nozzles - at the top of the reservoir over a VFL layer. A vibration foam generator is characterised by an implemented mixing chamber as a cylinder portion connected with a confuser and a diffuser placed respectively at an input and at an output of the foaming agent solution, having eccentricity "e" relatively to the confuser and a diffuser with a ring-shaped vibration exciter mounted thereon. The ring covers the cylinder portion of the mixing chamber and contacts thereto through rolling contact bearings.

EFFECT: more effective fire extinguishing in the VFL reservoirs.

2 cl, 2 dwg