SHUT-OFF AND CONTROL VALVE WITH ELECTRIC ACTUATOR Russian patent published in 2022 - IPC F16K31/04 

FIELD: gas supply systems.

SUBSTANCE: invention relates to the field of shut-off and control valves installed in gas supply systems, in particular in gas turbine engine control systems. Shut-off control valve with an electric drive contains a body with inlet and outlet pipes and a seat, a shut-off plunger with a stem, a seal housing and an electric drive unit, including a valve control unit, an electric motor, a lead screw and a threaded nut, position sensors and an electromagnet with a winding and with a placed inside its body and anchor by a power spring. The lead screw is placed with the possibility of interaction by means of a thread in the lead nut made inside the hollow rotor of the electric motor and rigidly connected with it. The lower (threadless) part of the lead screw is rigidly connected to the sleeve of the electromagnet housing. In the power circuit from the valve control unit built into the electric drive unit, a self-induction EMF suppression unit is connected to the electromagnet winding in parallel with the winding.

EFFECT: invention is aimed at optimizing the design and improving the reliability of operation of shut-off and control valves with a holding electromagnet in their drive.

5 cl, 7 dwg