PIPELINE DOSING DEVICE Russian patent published in 2025 - IPC E21B37/06 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil and gas industry and is intended for dosed supply of liquid chemical reagent into pipeline. Dosing device of the pipeline contains a container for chemical reagents, which is equipped in the upper part with a feed branch pipe with a gate valve and in the lower part with a drain gate valve. Pipeline dosing device additionally contains a coil installed in the pipeline by means of a flange connection. Coil is installed so that it can be removed from the pipeline and is connected to the container for chemical reagents through a branch pipe and a supply tube. In the axial channel of the coil there is a throttle, in front of it in the body of the coil there is a hole in which a supply tube is installed, on which a gate valve is installed, which is connected through the tube to the inlet end of the supply tube, which is installed in the container for chemical reagents. At the outlet end of the feed tube there is a nozzle, which is connected to the discharge tube through an expanded part, which forms an annular gap with the nozzle, with the possibility of suction of chemical reagents through the said annular gap. Discharge tube comes out of the container for chemical reagents and is connected through a gate valve to a branch pipe installed in the coil at the place of the supply hole behind the throttle. On the supply tube the gate valve is made with the possibility of adjusting the volume of chemical reagents by changing the gas flow rate.

EFFECT: providing accurate dosage of chemical reagent volume and control over the volume of liquid pumped into the pipeline.

1 cl, 1 dwg