SAFETY-SHUTOFF VALVE Russian patent published in 2016 - IPC F16K17/32 F16K31/56 

FIELD: construction.

SUBSTANCE: invention relates to valve industry and is intended for use in oil and gas industry, in production areas, GDS (gas distribution station), boiler houses and other facilities. Safety-shutoff valve comprises body 1 with inlet 2 and outlet 3 chambers, installed between them on the vertical axis 4 is gate 5 in the form of rotary disc with sealing side surface, sensitive control mechanism 6 with a movable rod 7, clutch 8 for manual arming of the valve arranged on upper end of the vertical axis 4 and located between them on the same axis 4 turning mechanism 9 with spring twisting 10, one end of which is connected to the housing 1, and the other is connected with bottom end surface of the rotary mechanism 9. Pin 11 is fixed on generating surface of turning mechanism 9. System of levers 12 is fitted in one plane between two parallel plates 13 and 14 levers with dimensions, not extending beyond the parallel plates 13 and 14, except the last lever whose end is equipped with lock 15 of cocked state of the valve to interact with moving rod 7 of sensitive control mechanism 6. Each lever has a twisted spring.

EFFECT: simplified design and higher safety of valve operation.

1 cl, 4 dwg