SOLENOID COIL Russian patent published in 2014 - IPC H01F17/04 H01F27/08 

FIELD: electricity.

SUBSTANCE: solenoid coil comprises an excitation winding and an external magnet core consisting of a cylindrical shell and two end flanges, which inner surfaces are magnet poles. The excitation coil consists of the main winding with a rectangular cross-section and two compensating windings of a V-shaped cross-section, which are wound around peripheral parts of the main winding with the rectangular cross-section. The main winding with the rectangular cross-section is wound on top of a cylindrical water-cooling jacket of a non-magnet material. The space between the main winding, two compensating windings of the V-shaped cross-section and the cylindrical shell of the external magnet core forms a gas-cooling jacket. The end flanges have a shape of cones protruding outside, where coaxial cone cutouts with peaks at pole surfaces are made. The angles at the base of the cones ensure equal density of a magnetic flux along the whole length of the magnet lines in the external magnet core.

EFFECT: improvement of uniformity and homogeneity of a magnetic field and power.

12 dwg, 3 tbl