VALVE GATE DEVICE HAVING SEVERAL FLUID FLOW CONTROL ELEMENTS Russian patent published in 2020 - IPC F16K1/44 F16K47/04 

FIELD: machine building.

SUBSTANCE: this invention generally relates to control valves, in particular to a gate device having several fluid flow control elements. Valve gate valve devices (200) having several fluid flow control elements are disclosed. Typical valve shutter device comprises main valve seat (212) and first flow control element (206) having cavity (220), as well as first mounting surface (232), wherein first flow control member can displace relative to main valve seat. Second flow control element (208) is located inside the cavity and is connected with possibility of sliding relative to the first flow control element. Seat (212) of the auxiliary valve is connected to the first flow control element, and the second flow control element moves relative to the seat of the auxiliary valve by regulating the fluid flow through the auxiliary valve seat.

EFFECT: technical result of invention is aimed at elimination of aerodynamic noise, which can be caused by flow of high-pressure process fluid and high speed between inlet and outlet, as well as to shift frequency of generated noise to levels outside audible range.

19 cl, 6 dwg