ELECTRIC DRIVE OF PIPELINE VALVES WITH MANUAL OVERRIDE Russian patent published in 2024 - IPC F16K31/05 F16K31/53 

FIELD: machine building.

SUBSTANCE: invention relates to the field of machine building, in particular to electric devices for combined control of electrified shutoff and control valves by means of an electric motor and manually. Electric drive of pipeline valves with manual override includes an electric motor containing a shaft with a normally closed electromagnetic brake connected to it, cylindrical or bevel gearbox containing input gear rigidly fixed on electric motor shaft, and an output gear kinematically connected to the input gear, a planetary reduction gear including a shaft with an output gear of a cylindrical or conical reduction gear rigidly fixed thereon, sun gear rigidly fixed on the shaft of the planetary reduction gear, satellites kinematically connected to the sun gear, and a crown gear, divided in a plane perpendicular to the axis of rotation of the shaft of the planetary reduction gear, into a support part, including an inner side kinematically connected to the satellites, and outer side, and driven part, kinematically connected to satellites, worm shaft with rigidly fixed on it manual override handwheel, kinematically connected to outer side of support part of crown gear with possibility of self-braking, and output shaft of electric drive, rigidly connected to driven part of crown gear, wherein the number of teeth of the inner side of the support part of the crown gear and the driven part of the crown gear are related by the following ratio: Z_d = Z₀ ± k × N, where Z_d is the number of teeth of the driven part of the crown gear; Z₀ is the number of teeth of the inner side of the support part of the crown gear; N is the number of satellites; k is an integer coefficient; wherein integer coefficient k is greater than or equal to one.

EFFECT: invention is aimed at improvement of reliability of electric drive due to separation of kinematic circuits of control of shutoff valves from electric motor and manual override.

1 cl, 1 dwg, 1 tbl