ROTOR OF SUPERCONDUCTING ROTARY ELECTRIC MACHINE

摘要

PURPOSE:To prevent insulation breakdown due to application of a high voltage and to improve safety regardless of the temperature of a gas refrigerant delivered from a current lead when cooling the current lead for conducting current to a superconducting field coil winding with the gas refrigerant. CONSTITUTION:A current lead with a cooling path is connected to a superconducting field coil winding cooled by liquid helium. At the same time. in the rotor of a superconductive rotary electric machine for cooling the current lead by circulating a low-temperature helium gas to the cooling path of the current lead, a refrigerant gas delivery pipe 5 connected to the edge part of the current lead and an interlocking pipe 18 connected to a refrigerant collection pipe are connected by an insulation joint 31 which is joined by inserting metal pipes 31b and 31c into the outer-surface or inner-surface sides of a GFRP pipe 31a.