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gas turbine

A technology for gas turbines and air vents, which is applied in the direction of gas turbine devices, combustion chambers, combustion methods, etc., and can solve the problems of reduced performance of sound-absorbing surfaces and structural surfaces, and prone to wrinkles

Active Publication Date: 2012-02-01
MITSUBISHI POWER LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when the transition piece has a tapered shape, creases tend to occur on the bent portion of the press-worked first member.
Therefore, I am worried that the performance of the sound-absorbing surface and structural surface of the product will be reduced

Method used

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Embodiment

[0051] figure 1 It is a diagram showing the overall configuration of a gas turbine according to an embodiment of the present invention. figure 2 yes means figure 1 A cutaway view of the gas turbine combustor is shown. image 3 yes means figure 2The configuration diagram of the combustion vibration reduction device of the combustor shown. Figure 4 and Figure 5 yes means image 3 A-A direction view of the vibration reduction device shown ( Figure 4 ) and B-B direction sectional view ( Figure 5 ). Figure 6 ~ Figure 11 yes means image 3 An explanatory diagram of a modified example of the combustion vibration reduction device shown.

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PUM

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Abstract

An object of the present invention is to provide a gas turbine that improves appearance of a combustion oscillation suppressing device disposed to a transition piece of a combustor. To achieve the object, a combustion oscillation suppressing device 34 is disposed to a transition piece 32 of a combustor to define a gas space S, and has a plurality of vent holes 343 through which a gas space L and the inside of the transition piece 32 communicate with each other. The combustion oscillation suppressing device 34 has: a first member 341 that has a substantially U-shaped cross-section formed by press-working, and is disposed on the outer circumference of the transition piece 32 with a substantially U-shaped cross-section opening thereof facing the transition piece 32; and a second member 342 that defines the gas space S between the first member 341 and the second member 342 by blocking the substantially U-shaped cross-section opening of the first member 341, and has the vent holes 343. In a radial-direction cross section of the transition piece 32, when the outer diameter of the transition piece 32 varies along an axial direction of the transition piece 32, distances d1 and d2 from the axis L of the transition piece 32 to each bent portion of the first member 341 having a substantially U-shaped cross-section are set to be substantially equal.

Description

technical field [0001] The present invention relates to a gas turbine, and more specifically, to a gas turbine capable of improving the appearance of a combustion vibration reduction device disposed on a transition piece of a combustor. Background technique [0002] In recent gas turbines, in order to reduce the combustion vibration generated by the combustor, a combustion vibration reducing device (acoustic lining) is provided on the transition piece of the combustor. As a conventional gas turbine having such a configuration, the technology described in Patent Document 1 is known. The current gas turbine combustion vibration reduction device (modular resonator) is a module-shaped resonator in a gas turbine power plant that defines flow paths for the compressor, combustor assembly, transfer unit, and turbine assembly. A first member having a small diameter and having a plurality of openings formed therein, and a second member maintaining a spaced relationship with the first...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23R3/16F23R3/42F02C7/24F23R3/18
CPCF05B2260/96F01D9/023F23R3/00F05D2260/963F23R2900/00014F05D2260/96F02C7/24F23M99/005F23M20/005
Inventor 松山敬介宫内宏太郎
Owner MITSUBISHI POWER LTD