| 摘要 |
A radial lead spanner nut assembly (60) for preventing leakage of hydrogen gas in hydrogen-cooled power generators, an apparatus (50), and method are provided. The radial lead spanner nut assembly (60) is preferably mounted to a radial lead (26) positioned in a radial bore (37) of a generator rotor body (21) of a power generator. The radial lead spanner nut assembly (60) preferably has a radial lead spanner nut body (61), nut threads (62) positioned on the outer peripheries of the nut body (61) for abuttingly contacting a radial bore (37) along the bore threads (32) thereof, and a plurality of spaced-apart seal channels (64, 66, 68) formed in peripheries of non-threaded portions of the nut body (61). The plurality of spaced-apart seal channels (64, 66, 68) include at least a first seal channel (64) formed in outer peripheries of the nut body (61) adjacent non-threaded portions of the radial bore (37) and at least a second seal channel (66) formed in inner peripheries of the nut body (61) adjacent the radial lead (26). The radial lead spanner nut assembly (60) also preferably includes first and second seal members (65, 67) respectively positioned in the first and second seal channels (64, 66). The first seal member (65) preferably abuttingly contacts non-threaded portions of the radial bore (37), and the second seal member (67) preferably abuttingly contacts the radial lead (26).
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