ELECTRIC DRIVE Russian patent published in 2017 - IPC F16K31/05 

FIELD: electricity.

SUBSTANCE: electric drive of pipeline valves contains a voltage switch, an electric motor, an output shaft, an electrical network, an external control system. The electric drive additionally contains a gear reducer, the first, second and third position sensors, a power reducer, a manual branch, a torque sensor, a temperature sensor mechanically mounted on an electric motor. The control unit additionally includes a phase sequence analyzer, an output position and speed calculating module, first, second, third and fourth digitizing modules, a control module, a control panel, a digital interface controller, and an analog interface controller. Moreover, the power reducer is mechanically connected to the electric motor on one side, and on the other side - to the instrument gearbox, the torque sensor, the manual branch and the output shaft. At the same time, the instrument gearbox is made in the form of a multistage cylindrical gearbox with mechanically mounted first, second and third position sensors, the shafts of which are respectively mechanically connected to each of the three separate stages of the instrument gearbox. In this case, the first, second and third position sensors are electrically coupled to the first, second and third digitizing modules, respectively, and the torque sensor is electrically coupled to the fourth digitizing unit. In turn, the first, second and third digitizing modules are electrically connected to the output position and speed calculating module, which in turn is electrically connected to the control module. In this case, the control module is electrically connected to a phase sequence analyzer of the supply voltage, a voltage switch, fourth digitizing module, a temperature sensor, a control panel, a digital interface controller, an analog interface controller. Moreover, the digital interface controller and the analog interface controller are electrically connected to the external control system, and the phase sequence analyzer of the supply voltage is electrically connected to the electrical network and the voltage switch electrically connected to the motor.

EFFECT: invention makes it possible to increase the reliability of the electric drive, to provide the possibility of remote control, to unify the design of the electric drive, to improve the accuracy of positioning the electric drive output shaft.

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