ROLLABLE VESSEL FOR FOREST FIRE FIGHTING UNIT Russian patent published in 2002 - IPC

FIELD: fire-fighting equipment. SUBSTANCE: vessel has tubular frame connected to shaft, and longitudinal horizontal partition wall mounted on one end of shaft in internal cavity to define air and liquid chambers and equipped with valve. Hubs on shaft are adapted for carrying enclosure made from high-strength water-impermeable fabric and provided with flexible hoses fixed to enclosure inner surface. Valve outlet cavity is connected to discharge air channel and pressure cavity of tractor hydraulic pump is connected to discharge liquid channel. Both channels are introduced into cavity of ejector-type foam generator. In the process of suppressing forest fire, unit is movable along laid path, hydraulic pump pumps out liquid from vessel through hose to direct it into foam generator, and freed volume is filled with compressed air from compressor. Excessive air is also directed to foam generator through safety valve. As a result, liquid flows mix with air and resultant mixture is delivered to foam generator net, from which high-expansion air-foam is discharged. While unit advances, foam roll is left on soil. Rollable vessel is adapted for conveyance and supplying to fire zone of liquid fire- suppressing agents used for fighting against forest and tundra fires in perennially frozen ground zones. EFFECT: increased efficiency and enhanced reliability in operation. 2 dwg