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US 6,585,270 B2Granted
Hydrogen seal ring having seal at ring intersegment
AssigneeGeneral Electric Company
InventorWei Tong
Life of this patent
Estimating the term…
Abstract
A seal is provided at the intersegments of hydrogen seal rings for preventing oil leakage through this potential gap between the seal ring segments. By minimizing leakage through the gaps between the open rings, hydrogen consumption in hydrogen-cooled generators due to leakage oil is reduced. In a preferred embodiment, the seal is provided by a brush seal secured to one of the seal ring segments and received in a slot defined in the other of the seal ring segments.
Claims10
A seal ring assembly for a rotor shaft comprising:
- an upper seal casing defining a first radially inwardly directed channel;
- a lower seal casing defining a second radially inwardly directed channel, said upper and lower seal casings being joined about a shaft to form a substantially 360° seal casing;
- first and second seal rings, each composed of upper and lower seal ring segments respectively disposed in said first and second radially inwardly directed channels of said upper and lower seal casings, said upper and lower seal ring segments being resiliently joined about the shaft to form a substantially 360° seal with said upper and lower ring seal segments of each said seal ring resiliently secured together at circumferential interfaces therebetween;
- and
- a seal structure defined at each said circumferential interface to substantially seal a circumferential gap between said upper and lower seal ring segments, each said seal structure extending radially so as to substantially reduce leakage flow in an axial direction through said circumferential gap.
2 more elements
Dependencies are inferred from the claim text.