Scalable multi-stage magnetic levitation molten salt pump

A scalable multi-stage magnetic levitation molten salt pump, comprising:

• a first pump stage assembly, a second pump stage assembly, and a third pump stage assembly, which are arranged in fluid communication sequentially between a suction interface and a pressure interface of the molten salt pump;
• a radial magnetic levitation bearing assembly, wherein the radial magnetic levitation bearing assembly is disposed between the first pump stage assembly and the second pump stage assembly, configured to provide rotational support to a rotor;
• an axial magnetic levitation bearing, wherein the axial magnetic levitation bearing is disposed between the second pump stage assembly and the third pump stage assembly, configured to provide axial support to the rotor;
• wherein the radial magnetic levitation bearing assembly and the axial magnetic levitation bearing are respectively enclosed by separate streamlined bearing housings, the streamlined bearing housings are connected to a pump body via guide vanes to form a flow channel;
• the radial magnetic levitation bearing assembly comprises:
• a radial magnetic levitation bearing outer housing, wherein a first end of the radial magnetic levitation bearing outer housing is connected to a housing of the first pump stage assembly, and a second end is connected to a housing of the second pump stage assembly;
• a radial magnetic levitation bearing inner housing, wherein the radial magnetic levitation bearing inner housing is a streamlined bearing housing, and the radial magnetic levitation bearing inner housing is fixedly connected to the radial magnetic levitation bearing outer housing via a guide vane assembly;
• an electric motor, wherein a stator of the electric motor is fixed within an interior of the radial magnetic levitation bearing inner housing;
• a lower radial magnetic levitation bearing, wherein the lower radial magnetic levitation bearing is disposed within the interior of the radial magnetic levitation bearing inner housing and located on a side of the electric motor adjacent to the suction interface, and a gap is maintained between the lower radial magnetic levitation bearing and the rotor;
• and
• an upper radial magnetic levitation bearing, wherein the upper radial magnetic levitation bearing is disposed within the interior of the radial magnetic levitation bearing inner housing and located on a side of the electric motor distal from the lower radial magnetic levitation bearing, and a gap is maintained between the upper radial magnetic levitation bearing and the rotor.