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Turbine blade and gas turbine

  • US 20040009066A1
  • Filed: 07/11/2002
  • Published: 01/15/2004
  • Est. Priority Date: 07/11/2002
  • Status: Active Grant
First Claim
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1. A turbine blade comprising:

  • a turbine blade body;

    a plurality of film cooling holes that are arranged on exterior walls of the turbine blade body;

    at least one rib having a plate-like shape that is arranged substantially perpendicular to a center line connecting between a leading edge and a trailing edge in a plane substantially perpendicular to an axial line of the turbine blade body in a vertical direction, so that an overall interior space of the turbine blade body is partitioned into at least two cavities by the at least one rib;

    a plurality of inserts, each of which has a hollow shape and a plurality of impingement holes, wherein the inserts are each arranged in the cavities in such a way that a cooling space is formed between an exterior surface of the insert and an interior surface of the turbine blade body, and wherein cooling air introduced into the inserts is forced to flow into the cooling space through the impingement holes so that the turbine blade body is subjected to impingement cooling, while the cooling air spurts out through the film cooling holes of the turbine blade body to form film layers around the turbine blade body, so that the turbine blade body is subjected to film cooling; and

    a communication means that is formed with the rib to provide a communication between the cavity arranged in a leading-edge side and the cavity arranged in a trailing-edge side.

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