Cryogenic current lead construction with self-contained automatic coolant vapor flow control

摘要: An automatic arrangement is provided for control of the flow vaporized coolant used removing heat from each current leads carrying to rotor winding a superconducting rotor. That portion lead extending vapor return duct (through which enter machine) into chamber formed as hollow insulated (electrically and thermally) structure. The terminal length thereof turned radially outward open outer end disposed below surface pool liquid in chamber. A trap defined lead, therein having pressure greater than core chamber, this differential being accommodated by difference between level entering lead.