RINSING BALL VALVE Russian patent published in 2018 - IPC E21B34/10 E21B37/00 

FIELD: engines and pumps, mining.

SUBSTANCE: invention relates to valve devices for wells equipped with deep-well pumps, and can be used for the washing liquid passing from the tubing string (TBG) into the annulus for the hydrate plugs dilution. Valve contains a cylindrical body with a stepped hole and a radial outlet (rinsing) hole. There can be several overflow holes. In the of the housing opening a cage is formed in the form of a segment in which a cylindrical cavity is made for the washing liquid passage with the possibility of connecting with the located above the valve TBG cavity. In the cavity installed are seat, ball-shaped locking element, return spring installed between the adjusting screw and the ball, pressing the ball to the seat. Seat is installed in the cavity opening and clamped with a threaded bushing. In the cage a threaded radial hole is made coaxial with the housing radial opening for the washing liquid outlet. Into the cage a screw with a hole for the of the washing liquid outlet is screwed in through the radial housing opening. Screw holds the cage in radial and axial directions.

EFFECT: technical result is improvement of reliability and service life of the valve.

3 cl, 3 dwg