SEALING DEVICES FOR HIGH PRESSURE FLOW CONTROL Russian patent published in 2019 - IPC F16K5/02 F16K5/04 

FIELD: physics.

SUBSTANCE: disclosed is a group of inventions, entitled as "Sealing devices for high-pressure flow control". Group of inventions relates to sealing channels for fluid medium flow inside flow control devices, such as those, which, in particular, are adapted for use in oil and gas production and processing systems under high pressure. High-pressure flow control device comprises: a housing defining a channel of the housing and defining a cutout in the housing, which crosses the channel of the housing. It comprises closing element attached to case and forming sealing surface. It comprises sealing element installed in case in cutout and made with possibility to protrude from cutout beyond body channel with tight fit to sealing surface formed by closing element. Also comprises passage for flow in housing, wherein closing element is made with possibility of selective movement between open position, allowing fluid medium to flow along flow passage, and closed position, which prevents flow of fluid medium along flow passage, wherein sealing element surrounds passage for flow and is ring-shaped.

EFFECT: technical result is longer service life together with reduced downtime and cost of operation.

28 cl, 17 dwg