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Turbine shroud segment with buffer air seal system

  • US 10,094,234 B2
  • Filed: 01/22/2016
  • Issued: 10/09/2018
  • Est. Priority Date: 06/29/2015
  • Status: Active Grant
First Claim
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1. A turbine shroud segment adapted for use in a gas turbine engine having a central axis about which primary components of the engine rotate, the turbine shroud segment comprisinga carrier segment comprising metallic materials, the carrier segment includes a mount plate and a plurality of receiving walls that extend inwardly in a radial direction from the mount plate toward the central axis to define an attachment-receiving space,a blade track segment comprising ceramic matrix composite materials, the blade track segment formed to include a runner shaped to extend partway around the central axis and an attachment portion that extends radially outward from the runner into the attachment-receiving space channel formed by the carrier segment, anda seal member that extends radially between the receiving walls of the carrier segment and the runner of the blade track segment to resist the movement of gasses into the attachment-receiving space,wherein at least one of the receiving walls included in the carrier segment is formed to include buffer air passageways configured to discharge buffer air along the seal member to resist the movement of gasses into the attachment-receiving space,wherein the plurality of receiving walls are formed to include a seal channel that extends outwardly in the radial direction and the seal channel receives the seal member, andwherein the seal channel formed by the receiving walls extends all the way around the attachment portion of the blade track segment.

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