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Turbine blade

A technology of turbine blades and blades, which is applied to the supporting elements of blades, cooling of turbine/propulsion devices, cooling of engines, etc., and can solve problems such as temperature rise of cooling gas and reduction of film cooling efficiency

Active Publication Date: 2013-11-20
IHI CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the flow of the cooling gas is made turbulent, the cooling gas immediately mixes with the main flow flowing on the surface of the blade portion, and there is also a disadvantage that the temperature of the cooling gas as the refrigerant rises.
That is, if the turbulent flow of the cooling gas is excessively promoted, the mixing of the film cooling layer and the mainstream gas is also promoted, and the efficiency of film cooling decreases.

Method used

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Examples

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Embodiment Construction

[0026] Hereinafter, an embodiment of a turbine blade according to the present invention will be described with reference to the drawings. In addition, in the following description, in order to make each component into a recognizable size, the ratio of each component is changed suitably.

[0027] figure 1 It is a perspective view of the turbine blade 1 of this embodiment. Figure 2A as well as Figure 2B is a cross-sectional view of the turbine blade 1, Figure 2A yes figure 1 Middle A-A sectional view, Figure 2B yes figure 1 Middle B-B cross-sectional view. Such as figure 1 As shown, the turbine blade 1 of the present embodiment includes a blade portion 2 , a root portion 3 , and a cooling portion 4 .

[0028] blade part 2 as Figure 2A as well as Figure 2B As shown, it is set to have a leading edge 21 (blade leading edge), a trailing edge 22 (blade trailing edge), a ventral blade surface 23 (blade belly), and a back blade surface 24. At the same time, the inner 25...

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Abstract

The present invention relates to a turbine blade (1) which is equipped with multiple rows of cooling parts (4, 4A, 4B) which have notch parts (41) that discharge to the ventral blade surface (23) a cooling gas introduced into the interior (25) of a blade part (2), and which forms rows in the direction from the front edge of the blade to the rear edge of the blade. This turbine blade is equipped with: turbulent-flow-promoting parts (4B), which are provided in the row of the aforementioned multiple rows that is most to the downstream side, and have turbulent-flow-promoting means (44, 45, 46) in the region exposed by the notch parts (41); and film cooling parts (4A), which are provided in any of the other of the aforementioned multiple rows, and in which a film cooling layer is formed in the region exposed by the notch parts (41).

Description

technical field [0001] The invention relates to a turbine blade. This application claims priority from Japanese Patent Application No. 2011-054253 filed in Japan on March 11, 2011, the contents of which are incorporated herein by reference. Background technique [0002] Turbine blades equipped with turbines are generally placed in high-temperature fluids. In particular, the turbine blades equipped with the gas turbine are placed in an extremely high temperature environment due to being placed in the high temperature combustion gas discharged from the combustor. In order to improve the durability of the turbine blade placed in such a high-temperature environment, cooling gas such as cooling air may be supplied to the inside of the turbine blade. In this way, by supplying the cooling gas to the inside of the blade, the temperature rise of the turbine blade can be suppressed, and the durability of the turbine blade can be improved. [0003] However, from the viewpoint of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D5/18F01D9/02F02C7/18
CPCF01D5/187F01D5/186F05D2260/202F05D2240/304F05D2260/2212F05D2260/201F01D5/18F01D9/02F02C7/18
Inventor 大北洋治仲俣千由纪
Owner IHI CORP