| 摘要 |
FIELD: machine building.SUBSTANCE: invention can be used in the design, such as a closed cycle gas turbines of high power. Bearing assembly includes a hollow cylindrical body, which is placed in the cavity of the sleeve made of segments and a pin. Segments of sleeve made of a high temperature superconducting material, such as volumetric trough elongate elements identical angular length, and fixed on the outer surface of the copper and cylindrical shell separated by its projections arranged in the gaps between the segments. Copper cylindrical shell simply supported and secured to the sleeve support body comprising end ring secured to one another by longitudinal bars of rectangular cross-section, the outer surface of which coincides with the outline of the end rings and bonded to the inner surface of the cylindrical shell of copper. Ends of the sleeve plugged circular flange whose surface facing the hub is provided with a peripheral annular flange and a central cylindrical projection or a shoulder with a diameter corresponding to the diameter of the holes of the end rings. Diameter of the cylindrical surface formed by segments coincides with an outer diameter of the flanges and the peripheral annular projections which coincide with the annular grooves on the edge of it facing the surface formed by the sleeve segments. Loose flange surfaces are provided with a thermal coating. In one of the flanges and a thermal barrier coating formed at least two openings configured to feed - discharge refrigerant. On the inner surface of the cavity of the cylindrical body is formed a magnetic system made according to the Halbach scheme. Inner cavity formed in the magnetic system forms a working air gap with the outer surface of sleeve rotatably relative thereto of the hollow cylindrical body.EFFECT: provision of high load-bearing capacity of the radial bearing assembly with a decrease in friction losses therein, increase its reliability, increase the mechanical efficiency of the mechanism, increasing the circumferential speed of the stud.1 cl, 2 dwg |
