Patent ID: 6236128
Filing Date: 2001-05-22
Classification: H02K

Abstract:
An apparatus for preventing leakage of hydrogen gas in a hydrogen-cooled power generator, the apparatus comprising:a power generator having a rotor body including a rotor bore and an axial lead positioned within the rotor bore for providing a current path through the rotor;a radial bore formed in the rotor body and extending from an outer surface of the rotor body to the axial lead, the radial bore having a first predetermined diameter and a second predetermined diameter greater than the first predetermined diameter so that a transition region from the first predetermined diameter to the second predetermined diameter defines a bore shoulder, the radial bore including bore threads positioned along proximal end portions of the radial bore;a radial lead positioned in the radial bore and having distal end portions connected to the axial lead of the rotor body; anda radial lead spanner nut assembly mounted to the radial lead and having portions thereof abuttingly contacting the outer peripheries of the radial bore and the radial lead, the radial lead spanner nut assembly including a radial lead spanner nut body, nut threads positioned on the outer peripheries of the nut body and abuttingly contacting the radial bore along the bore threads thereof, a plurality of spaced-apart seal channels formed in peripheries of non-threaded portions of the nut body, the plurality of spaced-apart seal channels including at least a first seal channel formed in outer peripheries of the nut body adjacent non-threaded portions of the radial bore and at least a second seal channel formed in inner peripheries of the nut body adjacent the radial lead, and first and second seal members respectively positioned in the first and second seal channels, the first seal member abuttingly contacting non-threaded portions of the radial bore and the second seal member abuttingly contacting the radial lead.