SYSTEM FOR THE CATCHING OF OIL AND OIL PRODUCTS VAPORS DURING FILLING-DRAIN AND TRANSPORTATION IN RAILWAY TANKS Russian patent published in 2019 - IPC B01D53/75 B65D90/30 B01D5/00 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil and gas industry, in particular, to oil and oil products light fractions catching during draining and transportation operations. System for catching vapors of oil and oil products during filling-draining and transportation in railway tanks includes device for condensation of petroleum products vapors, connected to railroad tank cars, and system of pipelines with possibility of their connection to tank farm of oil depot for filling-draining of oil products. In each cistern the filling tube sealing assembly is installed, it contains hollow housing, the base of which is rigidly installed on the tank cover equipped with a hole. Upper part of hollow body is made with external thread and with hole for installation of filling pipe equipped with restrictive bushing, rigidly installed on filling tube with possibility of sealing steam-air space of cistern with the help of seal in housing end and pressure nut installed on the restrictive bushing with threaded connection to the housing. In the hollow body in the made holes there installed are diametrically located branch pipes for oil and oil product vapors discharge, which are connected to similar pipes of other tanks by means of flexible hoses, which provide connection of air-vapor space of all tanks with condensation device of oil products vapors, which is installed in a separate car located either in the middle of the train, or in one of its ends, which also contains the refrigerating chamber compressor, the pipelines with the cooling agent of which are connected to the condensation device of oil products vapors.

EFFECT: invention makes it possible to compensate pressure of oil products vapors at change of temperature conditions and fluctuations of oil products during transportation.

4 cl, 5 dwg