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Design method, structure and application of resonance type silencer inside waste heat boiler

A technology of waste heat boiler and design method, which is applied to steam boiler components, steam boilers, steam boiler accessories, etc., and can solve the problems of inability to find waste heat boiler noise, high construction cost, and general noise reduction effect of chimney exhaust noise, etc.

Active Publication Date: 2014-08-06
HUADIAN HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a design method, structure and application of a resonant muffler for waste heat boilers, which can effectively solve the problems in the prior art, especially the inability to find out the root cause of the waste heat boiler noise for Therefore, the noise reduction effect on the chimney exhaust noise is general and the cost is high.

Method used

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  • Design method, structure and application of resonance type silencer inside waste heat boiler
  • Design method, structure and application of resonance type silencer inside waste heat boiler
  • Design method, structure and application of resonance type silencer inside waste heat boiler

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Embodiment 1

[0060] Embodiment 1 of the present invention: a method for designing a resonant muffler for a waste heat boiler, comprising the following steps:

[0061] a. Two perforated plates 3 and one liner 4 are provided, and the two perforated plates 3 are attached to both sides of the liner 4 respectively; both sides of the liner 4 close to the perforated plate 3 are groove structures, so that 3 and the liner 4 form a sound-absorbing cavity 5, and add a liner 8 with a thickness of 1mm at the perforation of the perforated plate 3 to obtain a double-sided perforated sound-absorbing body 2;

[0062] b. Stack multiple double-sided perforated sound-absorbing bodies 2 with different structural parameters to form a double-sided perforated sound-absorbing panel 1;

[0063] c. Provide a perforated plate 3 and a liner 4 in addition, the perforated plate 3 is attached to one side of the liner 4, and the side of the liner 4 that is close to the perforated plate 3 is a groove structure, so that the...

Embodiment 2

[0071] Embodiment 2: A resonance muffler for waste heat boiler, such as Figure 2 ~ Figure 3As shown, it consists of a double-sided perforated sound-absorbing panel 1 and a single-sided sound-absorbing structure 9 located inside the furnace cavity; the double-sided perforated sound-absorbing panels 1 are arranged side by side inside the furnace cavity, and consist of multiple The double-sided perforated sound-absorbing body 2 is stacked, and the single-sided sound-absorbing structure 9 is arranged on the inner wall of the upper part of the waste heat boiler. The double-sided perforated sound-absorbing panel 1 is composed of multiple double-sided perforated sound-absorbing bodies 2 with different structural parameters; the double-sided perforated sound-absorbing body 2 includes: two perforated plates 3 and a liner 4, Two perforated plates 3 are attached to both sides of the lining plate 4 respectively; both sides of the lining plate 4 close to the perforated plate 3 are of groo...

Embodiment 3

[0072] Embodiment 3: A resonant muffler for a waste heat boiler, consisting of a double-sided perforated sound-absorbing panel 1 and a single-sided sound-absorbing structure 9 inside the furnace cavity; the double-sided perforated sound-absorbing panels 1 are arranged side by side It is located inside the furnace cavity and is composed of multiple double-sided perforated sound-absorbing bodies 2 with different resonance frequencies. The single-sided sound-absorbing structure 9 is arranged on the inner wall of the upper part of the waste heat boiler. The double-sided perforated sound-absorbing panel 1 is composed of multiple double-sided perforated sound-absorbing bodies 2 with different structural parameters; the double-sided perforated sound-absorbing body 2 includes: two perforated plates 3 and a liner 4, Two perforated plates 3 are attached to both sides of the lining plate 4 respectively; both sides of the lining plate 4 close to the perforated plate 3 are of groove structu...

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Abstract

The invention discloses a design method, structure and application of a resonance type silencer inside a waste heat boiler. The resonance type silencer is composed of double-faced perforated sound absorbing plates (1) and single-faced sound absorbing structures (9), wherein the double-faced perforated sound absorbing plates and the single-faced sound absorbing structures are arranged in the boiler chamber. The double-faced sound absorbing plates (1) are arranged in the boiler chamber side by side and composed of a plurality of stacked double-faced perforated absorbers (2) different in resonance frequency. The single-faced sound absorbing structures (9) are arranged on the inner walls of the upper portion of the waste heat boiler. The resonance type silencer has the better low-frequency silencing performance, noise transmitted from a chimney opening has the noise reduction amount of 14 dB(A) on an octave band of 63 Hz, and noise at the boundary of an enterprise nearly reaches a production standard. In addition, the resonance type silencer is used for noise reduction of the waste heat boiler and compared with the prior art, the invested noise reduction cost is reduced by at least 1 / 3.

Description

technical field [0001] The invention relates to a design method, structure and application of a resonant muffler for waste heat boilers, and belongs to the technical field of waste heat boiler noise treatment. Background technique [0002] Waste heat boilers can reutilize the waste heat generated after gas-fired power generation to improve power generation efficiency, thus making waste heat boilers more and more widely used in the field of power generation. However, the waste heat boiler will generate a lot of noise during the use process, which seriously affects the work and life of the surrounding residents. Therefore, if the waste heat boiler is to be used for long-term power generation, noise reduction treatment must be carried out. Through the noise monitoring of the waste heat boiler, it is found that the sound radiation of the chimney has the greatest impact on the sensitive points outside the plant. [0003] At present, for the noise reduction treatment of the waste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F22B37/00
Inventor 赵迎九黄福安钟振茂任玉凤魏普余平覆王奇
Owner HUADIAN HEAVY IND CO LTD
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