Rotor for a turbo generator, and turbo generator comprising a rotor

摘要

A rotor for a turbo generator is provided. The rotor includes a cylindrical rotor shaft that expands in the center to form a rotor body, grooves introduced into the cylindrical surface of the rotor body, an excitation winding accommodated in the grooves, a feeding duct through which a cooling gas flows, and cooling ducts which penetrate the excitation winding substantially in the radial direction and connect the feeding duct to respective outlets in the cylindrical surface of the rotor body A distribution duct extending in the longitudinal direction of the shaft is arranged in the area of the central longitudinal axis. The feeding ducts are connected to the distribution duct via junction ducts. An admission duct for feeding the cooling gas is provided for each distribution duct.

主权项

1. A rotor for a turbo generator, comprising:
a cylindrical rotor shaft that thickens in a center to form a rotor body; a plurality of grooves that are introduced into a cylindrical surface of the rotor body and are spaced apart in a circumferential direction, and extend in a longitudinal direction of the shaft; an excitation winding accommodated in the plurality of grooves; a feeding duct, through which a cooling gas flows and for which space is provided between a bottom of a groove and an end of the excitation winding facing away from the cylindrical surface; a cooling duct which penetrates the excitation winding substantially in a radial direction and connects the feeding duct to a respective outlet in the cylindrical surface of the rotor body; a distribution duct arranged around a central longitudinal axis and extending in a longitudinal direction of the shaft; a respective connecting duct connecting the feeding duct to the distribution duct; and a radial admission duct per distribution duct for feeding the cooling gas, wherein the distribution duct is connected to a surface of the rotor shaft by the radial admission duct, and wherein a conductor bar for enlarging the excitation winding is arranged in the feeding duct, wherein the conductor bar is matched to dimensions of the feeding duct.