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Acoustic attenuator, tube assembly, combustor, gas turbine, and method for manufacturing tube assembly

An attenuator, sound technology, applied in combustion methods, gas turbine devices, combustion chambers, etc., to achieve the effect of easy assembly

Active Publication Date: 2022-02-08
MITSUBISHI HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These multiple components are integrated by welding work etc.

Method used

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  • Acoustic attenuator, tube assembly, combustor, gas turbine, and method for manufacturing tube assembly
  • Acoustic attenuator, tube assembly, combustor, gas turbine, and method for manufacturing tube assembly
  • Acoustic attenuator, tube assembly, combustor, gas turbine, and method for manufacturing tube assembly

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no. 1 approach

[0047] figure 1 It is a conceptual diagram showing the configuration of the gas turbine in the first embodiment of the present invention.

[0048] Such as figure 1 As shown, the gas turbine 10 includes: a compressor 20 that compresses air A; a plurality of combustors 40 that burn fuel in the air compressed by the compressor 20 to generate combustion gas G; and a turbine 30 that is driven by the combustion gas G.

[0049] The compressor 20 has a compressor rotor 21 rotating around a rotor axis Lr, a compressor housing 25 rotatably covering the compressor rotor 21 , and a plurality of fixed blade rows 26 . Hereinafter, the direction in which the rotor axis Lr extends is referred to as the rotor axis direction Da, one side of the rotor axis direction Da is referred to as the axial upstream side Dau, and the other side is referred to as the axial downstream side Dad. In addition, the circumferential direction around the rotor axis Lr is simply referred to as the circumferential ...

no. 2 approach

[0098] Next, a second embodiment of the present invention will be described with reference to the drawings. This second embodiment differs from the above-described first embodiment in that the extension portion 63 is not provided, and the main body damper spaces of adjacent main body damping units 71 of the main body 62A are communicated with each other through the communicating portion. Therefore, the same reference numerals will be assigned to the same parts as those in the above-mentioned first embodiment, and will be described. Also, detailed descriptions of the configurations that overlap with those of the first embodiment are omitted.

[0099] Figure 10 is the second embodiment of the present invention with Figure 5 The corresponding stereogram.

[0100] The canister assembly 80B of this second embodiment constitutes a part of the combustor 40 of the gas turbine 10 similarly to the canister assembly 80A of the above-mentioned first embodiment. Such as Figure 10 A...

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Abstract

An acoustic attenuator (61A) comprises a first attenuation unit (71A), a second attenuation unit (63), a welded section (W1), and a communication part (64A). A first acoustic damper (74) is provided on an outer surface of a first acoustic liner (73), which faces toward a side opposite from an object (51), to form a first damper space (Sd1) that communicates with an internal space of the object (51). The second attenuation unit (63) is attached to an outer surface of the object (51). The welded section (W1) is provided at least between the first acoustic damper (74) and a second acoustic damper (84). The welded section (W1) secures the second attenuation unit (63) to the first acoustic liner (73). The communication part (64A) is disposed in a position farther from an outer surface (55o) of the object (51) than the welded section (W1), allowing communication between the first damper space (Sd1) and a second damper space (Sd2).

Description

technical field [0001] The invention relates to a method for manufacturing a sound attenuator, a barrel assembly, a burner, a gas turbine and the barrel assembly. [0002] This application claims priority based on Japanese Application Patent No. 2019-142446 filed in Japan on August 1, 2019, and uses the contents thereof here. Background technique [0003] A combustor of a gas turbine may be provided with a sound attenuator for attenuating combustion vibration. As such a sound attenuator, there is a sound attenuator having a sound damper or an acoustic pad forming a plurality of spaces communicating with a combustion chamber of a burner. The plurality of spaces formed by these acoustic dampers or the acoustic pads can attenuate combustion vibrations in different predetermined frequency bands. [0004] Patent Document 1 proposes a technique of arranging the second case portion on the outer peripheral side of the first case portion in order to prevent the number of acoustic p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23R3/00
CPCF23R3/00F23R2900/00014F01D25/04F05D2240/35F23R3/16F23R3/005F05D2260/964F02C7/24F01D25/00F05D2230/232F05D2260/962F23R3/002
Inventor 白石浩一滩吉辰也村上贤太郎
Owner MITSUBISHI HEAVY IND LTD