Rotor turn conductor ventilation system structure of large steam turbine generator

The invention provides a large steam turbine generator rotor turn conductor ventilation system structure, which belongs to the technical field of generators and comprises rotor axial ventilation slots axially arranged on a rotor iron core. Rotor turn conductors are arranged on the rotor iron core at intervals, a plurality of radial ventilation slots are formed in the rotor turn conductors, and the radial ventilation slots are communicated with the rotor axial ventilation slots; the rotor turn conductor is provided with a plurality of pairs of mutually symmetrical ventilation ducts, and the two symmetrical ventilation ducts are communicated with each other. The cuboid grooves and the symmetrical through grooves are formed in the rotor turn conductor of the motor structure, so that the rotation of the motor is utilized more fully, the energy loss of air flowing in the rotor turn conductor is reduced, the heat dissipation capability of the rotor ventilation grooves is effectively improved under the electric and