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Combustor systems with liners having improved cooling hole patterns

  • US 7,905,094 B2
  • Filed: 09/28/2007
  • Issued: 03/15/2011
  • Est. Priority Date: 09/28/2007
  • Status: Active Grant
First Claim
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1. A combustor liner assembly comprising:

  • a liner having an inner surface configured to be exposed to a combustion gas;

    a first group of cooling holes formed in the liner and having an increasing density in a downstream direction,wherein the first group of cooling holes include a generally circumferential first row of cooling holes,a generally circumferential second row of cooling holes immediately downstream from, consecutive to, and separated from the first row at a first distance,a generally circumferential third row of cooling holes immediately downstream from, consecutive to, and separated from the second row at a second distance, anda generally circumferential fourth row of cooling holes immediately downstream from, consecutive to, and separated from the third row at a third distance,wherein the first distance is greater than the second distance and the third distance, and the second distance is greater than the third distance.

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