SEALED ROTARY HYDRODYNAMIC UNIT FOR MOLTEN SALT NUCLEAR REACTOR AND ACTIVE MAGNETIC BEARING FOR USE IN ROTARY HYDRODYNAMIC UNIT FOR MOLTEN SALT NUCLEAR REACTOR Russian patent published in 2024 - IPC F04D13/06 F04D29/48 F04D7/06 G21D1/04 H02K3/12 H02K7/08 

FIELD: electrical engineering.

SUBSTANCE: sealed rotor hydrodynamic unit (1) is made with possibility of operation with working fluid medium and contains impeller (6) located in volute (3). Volute (3) comprises inlet (4) for said working fluid and outlet (5) for said working fluid. Unit (1) also contains an induction or inductor electric motor or a generator containing stator (10) and rotor (8). Also, unit (1) comprises cup (18), in particular a sealed casing, separating the working fluid area from the dry area containing stator (10), wherein rotor (8) is located in the area of working fluid medium. Rotor (8) is functionally connected to impeller (6). Stator (10) comprises stator windings for exciting magnetic field penetrating rotor (8). Said stator windings are distributed in slots (11) located in stator (10). Part of stator windings inside said slots (11) is formed by one or more electroconductive monolithic rods (12). Each monolithic rod (12) passes through slot (11) not more than once. Sealed rotor hydrodynamic unit (1) is made with possibility of operation with salt melt as working fluid medium, for example, with salt melt of molten salt nuclear reactor (40). At that, unit (1) is made with possibility of operation at temperatures higher than 600 °C. Monolithic rods (12) are positioned and retained inside slots (11) by means of two or more spacers (13), which provide distance of the surface of monolithic rods (12) from the surface of slots (11) and creating free space between surface of monolithic rods and surface of slots (11) for electrical insulation of said one or more electrically conductive monolithic rods (12) from stator (10) due to spacing.

EFFECT: possibility of hydraulic unit operation at high temperatures.

46 cl, 30 dwg