CHECK WELL VALVE Russian patent published in 2023 - IPC F16K15/04 

FIELD: mechanical engineering.

SUBSTANCE: invention relates to valve engineering, and can be used to transfer gas from the annulus of a wellhead valve to the discharge line and prevent flows of the produced medium into the annulus of a wellhead valve. A wellhead check valve containing a body made in the form of a tee, the inlet and outlet holes of which are made on the same axis, and an actuator is mounted in the side hole. The actuator is made in the form of a cylindrical boss, inside which, orthogonally to the channel of fluid movement inside the valve, a cylinder is mounted with bypass holes in its side walls and with shut-off and control elements located inside it. These elements are made in the form of a spring and a locking ball. The cylinder is mounted in such a way that its lower end is located above the inner wall of the housing and the flow of the conductive medium.

EFFECT: creation of a reliable check valve with low hydraulic resistance to the flow of the conducted medium in the flow line of the wellhead valve.

4 cl, 1 dwg