TORQUE TRANSMISSION NODE FOR SUBMERSIBLE INSTALLATION (OPTIONS) Russian patent published in 2019 - IPC E21B43/00 H02K49/10 

FIELD: machine building.

SUBSTANCE: group of inventions relates to devices for transmitting torque without mechanical contact between the lead and the driven rotor, in particular to the nodes for transmitting torque with a magnetic clutch in the submersible oil-producing installations. Node includes a magnetic coupling consisting of driving and driven coupling halves with permanent magnets mounted on the rotor of the engine and the rotor of the pump, respectively, a protective sheath between them and an intermediate bearing support. Before the magnetic coupling on the pump side, an additional separator is installed that ensures the selection and separation of the well fluid and the further pumping of the separated low-viscosity fraction through the gap between the protective sheath and the driven coupling half to cool the magnets, in the driven half coupling, a central hole is made, which is hydraulically connected to the above-mentioned gap and returns the heated fluid to the well. In the second variant, intended for the extraction of low-viscosity borehole fluid, in front of the magnetic coupling on the pump side, an additional set of pump stages is installed. Package of steps provides for the selection of the required amount of well fluid, its further pumping through the gap between the protective sheath and the driven half coupling for cooling the magnets and returning the heated fluid to the well.

EFFECT: inventions allow to reliably transmit torque at high temperatures by removing the heated fluid outside the clutch.

4 cl, 3 dwg