NATURAL GAS ODORISER (VERSIONS) Russian patent published in 2015 - IPC G05D7/00 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to automatic control of gaseous medium consumption and can be used during odorisation of natural gas, including at low gas flow rates. A natural gas odoriser includes a temperature-controlled holding tank of odorising liquid with a supercharging branch pipe, a natural gas flow sensor with an air output signal, an odorant supply channel interconnected through a control valve and a bubble flow meter - dosing unit with a low pressure line. The bubble flow meter - dosing unit represents a bottle filled with liquid, in the lower part of which there installed is a gaseous odorant supply jet nozzle and a trap - calibrator providing formation of bubbles of equal volume, a bubble counter, and a bottle liquid column control system.

EFFECT: implementation of the invention consists in enlargement of functional capabilities of its operation, namely at low gas flow rates, improvement of reliability and accuracy of supply of odorant vapours to the main line proportionally to gas flow rate.

5 cl, 4 dwg