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Shroud seal

  • US 5,088,888 A
  • Filed: 12/03/1990
  • Issued: 02/18/1992
  • Est. Priority Date: 12/03/1990
  • Status: Expired due to Fees
First Claim
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1. In a segmented annular shroud for confining the axial flow of hot working gas in a gas turbine engine, a seal for blocking radial leakage flow of working gas through a gap between adjacent shroud segments, and seal comprising, in combination:

  • A. a first axially elongated strip sealing element spanning the gap and having lateral edges received in opposed first slots formed in confronting, gap-defining, radial surfaces of adjacent shroud segments;

    B. a second, axially elongated strip sealing element spanning the gap and having lateral edges received in opposed second slots formed in said confronting, gap-defining, radial surfaces of the adjacent shroud segments, said second sealing element being in radially spaced relation with said first sealing element; and

    C. a flow restricting element disposed between said first and second sealing elements to restrict the axial flow of hot working gas in the gap between said first and second sealing elements.

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