Ring segment coolant seal configuration
First Claim
1. In an array of ring segments disposed annularly about a periphery of moving blades in a gas turbine, a configuration of seals associated with respective adjacent ones of said ring segments for retaining coolant in a plenum within each of said ring segments, said configuration comprising:
- a first seal disposed over at least a portion of a plenum of a ring segment and comprising a creased edge thereof for contacting and sealing against an edge of an associated seal on an adjacent ring segment;
a second seal disposed over at least a portion of said plenum and comprising an angled distal portion at least partially defining an end of said plenum; and
a third seal disposed over at least a portion of said plenum and comprising an angled side portion disposed for sealing a gap between said distal portion of the second seal and said ring segment.
2 Assignments
0 Petitions
Accused Products
Abstract
A configuration of seals disposed around and between a plurality of ring segments (10) arrayed annularly about the periphery of moving blades in a gas turbine engine. The seals function to retain coolant in the plenum (18) within each of the ring segments (10). The seals are disposed atop a substrate (16A), which forms the top of the plenum (18). The first seal (25) is made of a piece of sheet material and seals the gap between adjacent ring segments. This seal has an edge (25A) thereof creased for mating with a similar seal on an adjacent ring segment. A second seal (27), which is also made of sheet material, seals the ends of the plenum (18) of the ring segments (10). Lastly, a third seal (29), which is also made of a piece of sheet material, seals the sides of the second seal (27).
28 Citations
20 Claims
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1. In an array of ring segments disposed annularly about a periphery of moving blades in a gas turbine, a configuration of seals associated with respective adjacent ones of said ring segments for retaining coolant in a plenum within each of said ring segments, said configuration comprising:
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a first seal disposed over at least a portion of a plenum of a ring segment and comprising a creased edge thereof for contacting and sealing against an edge of an associated seal on an adjacent ring segment; a second seal disposed over at least a portion of said plenum and comprising an angled distal portion at least partially defining an end of said plenum; and a third seal disposed over at least a portion of said plenum and comprising an angled side portion disposed for sealing a gap between said distal portion of the second seal and said ring segment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. In an array of ring segments supported between a pair of isolation rings and all being disposed annularly about a periphery of moving blades in a gas turbine, a configuration of seals for directing coolant through a plenum of one of said ring segments, said configuration comprising:
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a substrate defining a top of said plenum and comprising an opening therein, said substrate supported by said isolation rings in a spaced relationship with a top surface of said ring segment thereby defining a crevice; a pipe comprising a first end secured in said substrate opening for passage of coolant into said plenum and crevice; a first seal supported by said substrate, the first seal comprising an edge thereof creased for mating with an associated seal on an adjacent ring segment, said first seal being made of sheet material and comprising an opening therein aligned with said opening in said substrate and surrounding said pipe; a second seal supported by said substrate and comprising an angled distal portion at least partially defining an end of said plenum, said second seal being made of a piece of sheet material and comprising an opening therein aligned with said openings in said substrate and said first seal and surrounding said pipe; a third seal supported by said substrate and comprising an angled distal portion for sealing the sides of said second seal, said third seal being made of a piece of sheet material and comprising an opening therein aligned with said openings in said substrate, said first seal and said second seal and surrounding said pipe; a locking plate disposed atop all of said seals for securing then to the substrate, wherein said seals, said locking plate and said substrate comprise a seal stack assembly; a locking nut threaded onto a second end of said pipe for binding together said seal stack assembly; and a multiplicity of coolant passages formed in each of said isolation rings and in fluid communication with said crevice for metering passage of said coolant through said plenum and said crevice for cooling of the isolation rings. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. In an array of ring segments disposed annularly about the periphery of moving blades in a gas turbine, a configuration of seals associated with respective adjacent ones of said ring segments for retaining coolant in a plenum within each of said ring segments, said configuration comprising:
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a substrate disposed on top of said plenum for supporting a seal assembly stack, said substrate comprising an opening therein for passage of said coolant into said plenum; and said seal assembly stack comprising; a J-hook seal supported by said substrate and extending to contact a side of said ring segment for sealing an end of said plenum; and a lap seal supported by said substrate and extending to contact a side of the J-hook seal and a side of said ring segment for sealing an end of said J-hook seal. - View Dependent Claims (18, 19, 20)
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Specification