DEVICE TO APPLY ELECTROLYTIC COATINGS ON STEEL PIPES Russian patent published in 2018 - IPC C25D7/04 C25D19/00 

FIELD: machine engineering.

SUBSTANCE: device includes an inner sealing element, a capsule, an outlet, a hole, a cylindrical insoluble anode, a branch pipe for electrolyte supply, and multiple injectors. The sealing element separates a steel pipe at the area located inside in the longitudinal direction relative to the area on which an inner thread is made. The capsule is connected to the pipe end portion, the outlet is designed for discharging the electrolyte which is inside the capsule, and the hole facilitates the electrolyte release inside the capsule. The anode is placed inside the pipe end portion. The injectors discharge the electrolyte between the outer surface of the anode and the inner surface of the pipe end portion preventing the discharged electrolyte from contacting the injectors into the insoluble anode.

EFFECT: prevention of gas bubble retention, immediate removal of depleted electrolyte, and reduction of waste water amount.

3 cl, 2 tbl, 1 dwg