SERVO DRIVE OF PIPELINE VALVES DRIVEN BY FLUID Russian patent published in 2015 - IPC F15B9/12 F16K31/124 

FIELD: machine building.

SUBSTANCE: servo drive of the pipeline valve driven by fluid contains a base module (6) comprising electropneumatic/hydraulic signals converter and pneumatic/hydraulic control system, and at least one linear actuator (4) driven by the pneumatic/hydraulic control, the actuator slider (11) directly or indirectly is connected with valve input. Signal input of the base module is connected with control module (22), its signal output is connected with the electropneumatic/hydraulic signals converter, in which the signal of actual transducer (24) connected to the valve is returned. Between the signal input and at least one linear actuator the pneumatic/hydraulic internal control circuit (27) is functionally installed, preferably downstream the electropneumatic/hydraulic signals converter.

EFFECT: improved reliability.

18 cl, 4 dwg