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

A waste heat boiler and design method technology, which is applied to steam boiler components, steam boilers, steam boiler accessories, etc., can solve the problems that the waste heat boiler noise cannot be found, the noise reduction effect of chimney exhaust noise is general, and the cost is high.

Inactive Publication Date: 2014-04-23
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 silencer for waste heat boiler
  • Design method, structure and application of resonance silencer for waste heat boiler
  • Design method, structure and application of resonance silencer for 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, a structure and application of a resonance silencer for waste heat boiler. The resonance silencer is composed of double-faced perforated sound absorbing plates (1) and a single-faced sound absorbing structure (9) which are arranged inside a boiler chamber. The double-faced perforated sound absorbing plates (1) are arranged inside the boiler chamber side by side and formed by stacking a plurality of double-faced perforated sound absorbing bodies (2) with different resonance frequencies; the single-faced sound absorbing structure (9) is arranged on the inner wall of the waste heat boiler. The resonance silencer has relatively good low-frequency sound absorbing performance, enables noise emitted from a chimney to be provided with noise reduction of 14 dB (A) on a 63 Hz octave frequency belt and enables field noise to fundamentally meet the emission standard. Besides, compared with the prior art, the resonance silencer can reduce the invested noise reduction cost by one third when used for noise reduction of the waste heat boiler.

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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