LINEAR CYLINDRICAL INDUCTION PUMP Russian patent published in 2006 - IPC H02K44/06 H02K41/25 

FIELD: electrical engineering; pumping liquid metals in nuclear power engineering, chemical and metallurgy.

SUBSTANCE: proposed linear cylindrical induction pump has external and internal magnetic cores. Three-phase field winding is placed in external magnetic core slots. Internal magnetic core is placed in thin-walled internal sealed shell. Coaxial cylindrical channel of pump carrying liquid metal is formed by external and internal shells and is disposed between external and internal magnetic cores. Field-winding coils have constant turn number in each phase band throughout entire length of pump. Field winding has pole pair number greater than unity. Phase bands on every next pole pair after first one are shifted apart through phase band length in direction of liquid metal flow.

EFFECT: reduced pressure fluctuation at double frequency of power supply, enhanced pump efficiency in uniform flow area.

1 cl, 6 dwg