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Impingement sleeve and methods for designing and forming impingement sleeve

  • US 8,887,508 B2
  • Filed: 03/15/2011
  • Issued: 11/18/2014
  • Est. Priority Date: 03/15/2011
  • Status: Active Grant
First Claim
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1. A method for forming an impingement sleeve, the method comprising:

  • designing a cooling hole pattern for the impingement sleeve, the cooling hole pattern comprising a plurality of cooling holes, at least a portion of the plurality of cooling holes arranged along a circumferential line about a longitudinal direction having size differences that are generally asymmetric about the longitudinal direction, the cooling hole pattern configured to provide a desired operational value for a transition piece; and

    manufacturing an impingement sleeve, the impingement sleeve defining the plurality of cooling holes having the cooling hole pattern.

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