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System and method for cooling turbine blades

  • US 9,051,842 B2
  • Filed: 01/05/2012
  • Issued: 06/09/2015
  • Est. Priority Date: 01/05/2012
  • Status: Active Grant
First Claim
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1. A system, comprising:

  • a turbine blade comprising at least one cooling slot configured to convey a coolant in a flow direction from an interior to an exterior of the turbine blade, wherein the cooling slot comprises;

    an entrance coupled to the interior;

    a converging section downstream from the entrance, wherein the converging section comprises a first cross-sectional area that decreases in the flow direction; and

    an exit disposed along a trailing edge of the turbine blade, wherein the cooling slot comprises at least one of;

    only one metering section, wherein the metering section is disposed only downstream from the converging section;

    orthe exit of the cooling slot is disposed along the trailing edge on a midline between a pressure sidewall and a suction sidewall, wherein the exit comprises a diverging section;

    ora combination thereof.

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