BLOCK VALVE Russian patent published in 2018 - IPC F16K3/02 F16K17/10 F16K31/40 

FIELD: pipes.

SUBSTANCE: shut-off valve belongs to the pipeline fittings. It includes the double-acting piston actuator and the drive control system. Control system is mounted on the upper flange of the drive housing 10, it contains power driven four-way plunger valves and connecting channels 13, made in the flanges and in the side walls of the piston cylinder of the drive. Valves in the closed position are represented by the clearance in the working cavity plunger pair of the drive piston cylinder with the internal cavity of the valve body 1 and between each other, and in the open position, the valves communicate through one of the connection channels 13 about one of the working cavities of the actuator piston cylinder with the internal cavity of the valve body 1, and the other - with the drainage pipeline 24. Through channels are provided in the valve body 14 with the output to the connection channels 13 of the drive control system, the seat 21 and the guide plunger bushing 18 with the slots 19. Actuating locking element 27 forms, together with the seat 21, the gate at the inlet to the drainage pipeline 24. Hollow plunger with slots 30 and the end plug-pusher 31 is rigidly connected to the drive locking element 27. Second plunger 32 is mounted in the guide plunger bush 18 with the annular gap and is elastically pressed against the plunger 31. Fixing sleeve 34 is mounted on the rod 8. Latch 35 is biased against the locking sleeve 34 is installed in the body of the drive piston cylinder cover 11. Rod 8 with respect to the external environment is closed by the lid-cap 41. Bore is performed in the rod 8, in which the intermediate rod 39 is installed with the possibility of free running H_s, it has the permanent magnet.

EFFECT: reed members 42 and 43 are installed on the lid-cap 41, H_s=H_st-H_m, where H_st is the stroke of the actuator rod, H_m is the course of the magnet that is required in order to close the contacts of the reed elements 42 and 43.

4 cl, 6 dwg