RESERVOIR FOR CRUDE OIL AND OIL PRODUCTS Russian patent published in 1997 - IPC

FIELD: oil producing and processing industries, chemical industry; equipment for collecting, preparation, transportation and storage of oil and oil products. SUBSTANCE: holder in unit changing direction of air stream coming out of reservoir breather valve is made in form of vertical branch pipe with slot in lower portion before gas deflector. Ratio of height of slot in each point over branch pipe circumference to length of section passing from this through axis of branch pipe to wall of reservoir is constant. Gas deflector is made in form of conical surface with apex angle of 140-150 degrees. Area of slot in branch pipe is equal to area of its cross section. EFFECT: improved conditions of storage and transportation of oil products; reduced evaporation losses and pollution of atmosphere; improved reliability of operation. 3 cl, 4 dwg