ADJUSTABLE WATER-GAS EJECTOR Russian patent published in 2017 - IPC F04F5/04 F04F5/48 

FIELD: oil and gas industry.

SUBSTANCE: ejector is designed to eject gas into fluid flow in a reservoir pressure maintaining systems. The ejector has an inlet confuser 1, a diffuser 2 with an ejection slit 3 located therebetween, a gas supply branch pipe 4 communicating with the ejection slit 3 at confuser 2 inlet, an adjusting coupling 5 with a conical needle 6 is installed in the area of its connection with the water feed pipeline which is movable along the central axis of the confuser 2. The cone needle 6 is arranged along this axis and enters the confuser-diffuser transition, changing its cross-section area by changing its cross-section area. The adjusting coupling 5 includes a body 7 with four mutually perpendicular levers 8 fixed thereon. A bushing 9 is positioned inside the body 7 on which four mutually perpendicular blades 10 are fixed, in the center of intersection of which there is a seat 11 for installation of the conical needle 6. The body 7 has an internal thread for its fastening on external thread of the confuser 1.

EFFECT: providing stability of ejector operation under conditions of changing process parameters of its operation.

2 cl, 3 dwg