Systems and methods to reduce oscillations in magnetic couplings

摘要

A drilling system includes a magnetic coupling and an oscillation absorber. The magnetic coupling has a rotor that rotates about an axis of rotation. The oscillation absorber is in operable communication with the magnetic coupling and includes an outer layer coupled to a separator layer of the magnetic coupling to form an enclosed area. An absorber shaft of the oscillation absorber is at least partially within the enclosed area and is coupled to the rotor. The absorber further includes an outer mover arranged such that rotation of the absorber shaft causes the outer mover to rotate due to interaction of inner absorber shaft magnets and outer mover magnets.

主权项

1. A drilling system comprising:
a magnetic coupling including:
a rotor having a plurality of inner magnets disposed thereon in circular arrangement in an inner magnet region;a separator layer surrounding the inner magnet region; andan outer housing surrounding the inner magnet region and separated from the separator layer and including outer magnets arranged such that rotation of the outer housing causes the rotor to rotate about an axis of rotation; and an oscillation absorber in operable communication with the magnetic coupling, the oscillation absorber including:
an outer layer forming a portion of an enclosed area;an absorber shaft at least partially within the enclosed area that is coupled to the rotor and that includes inner absorber shaft magnets coupled to it; andan outer mover having outer mover magnets disposed therein and arranged such that rotation of the absorber shaft causes the outer mover to rotate due to interaction of the inner absorber shaft magnets and the outer mover magnets, the outer mover being moveable relative to the outer layer.