OIL PRODUCTS STORAGE RESERVOIR Russian patent published in 1996 - IPC

FIELD: oil industry; equipment for collecting, preparation and storage of oil products. SUBSTANCE: reservoir has cylindrical housing with roof, safety and breathing valves installed in roof and unit to change direction of atmospheric air flow inside the reservoir. This unit has bent branch pipe secured inside reservoir to breathing valve. Branch pipe is bent at obtuse angle and its outlet end is pointed to side opposite to center of roof. It has also cylindrical deflector installed coaxially with outlet hole of bent branch pipe. Area of working section of cylindrical deflector is smaller than area of section of bent branch pipe outlet hole. EFFECT: enhanced reliability of operation, prevention of contamination of atmosphere with gaseous hydrocarbons, preservation of light fractions of oil in reservoir. 2 dwg