DEVICE FOR PREVENTION OF TURBINE ROTATION Russian patent published in 2019 - IPC E21B43/12 F04D29/44 

FIELD: engines and pumps.

SUBSTANCE: invention relates to pumping equipment and can be used in oil industry as part of submersible electric centrifugal pump units. Device for prevention of turbine rotation consists of interconnected head and base, inside of which two shafts are installed on bearing supports – upper and lower ones, connected to each other through cam clutch with possibility of free stroke in circumferential direction. In the head there is an overrunning clutch providing for transmission of torque in the forward direction from the lower shaft to the upper one and preventing reverse rotation of the upper shaft. Overrunning coupling is connected with upper shaft via coupling coupling, movable part of which is installed on upper shaft with possibility of axial movement, and fixed part is rigidly connected with overrunning clutch. Coupling of coupling is provided by spring, and disconnection by pusher, which is installed on upper shaft with possibility of axial movement and on one side is connected to movable part of coupling coupling, and on other side – with bushing with inclined end surface rigidly installed on lower shaft.

EFFECT: technical result consists in improvement of reliability and safety of ESP operation.

6 cl, 4 dwg