Hula seal
AssigneeAnsaldo Energia Switzerland AG
InventorsHans-Christian Mathews, Urs Benz, Frank Graf
Life of this patent
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Abstract
The invention concerns a conical hula seal wherein an inner part of the conical hula seal is closer to a conical hula seal longitudinal axis than an outer part of the conical hula seal, and wherein the conical hula seal extends in a circumferential direction relative to the conical hula seal longitudinal axis. A gas turbine which includes the conical hula seal is also disclosed, along with a method of operating a gas turbine which includes a conical hula seal that seals a gap between a first vane and a picture frame, the method including purging the gap with a cooling fluid.
Claims18
A conical hula seal comprising:
- an inner part;
- an outer part, wherein
- the inner part of the conical hula seal is closer to a conical hula seal longitudinal axis than the outer part of the conical hula seal, and wherein the conical hula seal extends in a circumferential direction relative to the conical hula seal longitudinal axis;
- and
- a plurality of fingers, wherein the inner part is attached to one end of each of the plurality of fingers and the outer part is attached to the other end of each of the plurality of fingers, and the inner part is arranged to be attached to a bulkhead, and the outer part is arranged to slidably contact the bulkhead, the portion of the hula seal from the inner part to the outer part is arc-shaped in cross-section.
A method of operating a gas turbine having a conical hula seal that seals a gap between a first vane and a picture frame, the hula seal including an inner part;
- an outer part, wherein the inner part of the conical hula seal is closer to a conical hula seal longitudinal axis than the outer part of the conical hula seal, and wherein the conical hula seal extends in a circumferential direction relative to the conical hula seal longitudinal axis;
- and a plurality of fingers, wherein the inner part is attached to one end of each of the plurality of fingers and the outer part is attached to the other end of each of the plurality of fingers, and the inner part is arranged to be attached to a bulkhead, and the outer part is arranged to slidably contact the bulkhead the method comprising:
- purging the gap with a cooling fluid.
A gas turbine comprising:
- a conical hula seal, including an inner part, an outer part, wherein the inner part of the conical hula seal is closer to a conical hula seal longitudinal axis than the outer part of the conical hula seal, and wherein the conical hula seal extends in a circumferential direction relative to the conical hula seal longitudinal axis, and a plurality of fingers, wherein the inner part is attached to one end of each of the plurality of fingers and the outer part is attached to the other end of each of the plurality of fingers, and the inner part is arranged to be attached to a bulkhead, and the outer part is arranged to slidably contact the bulkhead;
- and
- a first vane and a picture frame and wherein the conical hula seal seals a gap between the first vane and the picture frame.
Dependencies are inferred from the claim text.