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Sound eliminating and noise lowering device of large-sized natural ventilation cooling tower in thermal power plant

A technology of natural ventilation and cooling tower, applied in the direction of sounding equipment, instruments, etc., can solve the problems of large heat exchange influence of cooling tower, large equipment maintenance investment, high structural requirements, and achieve the effect of small resistance coefficient, low cost and simple maintenance.

Inactive Publication Date: 2012-12-19
ZHEJIANG DONGFA ENVIRONMENTAL PROTECTION ENG
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention provides a large-scale natural ventilation cooling tower noise reduction device in a thermal power plant, which mainly solves the existing problems of poor noise reduction effect, high structural requirements, large device maintenance investment, and great influence on cooling tower heat transfer. and other technical issues

Method used

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  • Sound eliminating and noise lowering device of large-sized natural ventilation cooling tower in thermal power plant
  • Sound eliminating and noise lowering device of large-sized natural ventilation cooling tower in thermal power plant
  • Sound eliminating and noise lowering device of large-sized natural ventilation cooling tower in thermal power plant

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Embodiment

[0027] Embodiment: a kind of thermal power plant large-scale natural ventilation cooling tower noise reduction noise reduction device of this example, as figure 1 , figure 2 , image 3 , Figure 4 , including a cooling tower 1, a pool 2 at the bottom of the cooling tower, an independent foundation 3 is arranged outside the pool, and all independent foundations are integrated. On an independent basis, several noise-eliminating guide vanes 6 are erected through several columns 4 and beams 5, and the distance between adjacent noise-eliminating guide vanes is 50-200mm. The top cover plate 7 is provided on the upper end of the sound-absorbing deflector, and the top cover plate is a composite sound-absorbing and sound-insulating plate, and a top frame 12 is provided below the top cover plate. The sound-absorbing deflector, the top cover plate and the independent foundation form a "7"-shaped continuous closed structure, such as Figure 4 , the noise-absorbing deflector includes ...

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Abstract

The invention relates to equipment for noise abatement, and particularly relates to a sound eliminating and noise reducing device of a large-sized natural ventilation cooling tower in a thermal power plant, which mainly solves the technical problems that in the prior art, the noise reduction effect is poor, the structure requirement is high, device maintenance cost is high, the influence to the heat exchange of a cooling tower is great and the like. The device comprises a cooling tower (1) and a cooling tower bottom pool (2), and is characterized in that independent bases (3) are arranged at the outer sides of the pool (2); a plurality of sound elimination flow deflectors (6) are erected on the independent bases through a plurality of vertical columns (4) and cross beams (5); top cover plates (7) are arranged at the upper ends of the independent bases; a 7-shaped continuous sealed structure is formed by the sound elimination flow deflectors, the top cover plates and the independent bases; the sound elimination flow deflectors comprise composite sound absorbing and isolating bodies; sound absorbing non-woven cloth (8) is wrapped outside the composite sound absorbing and isolating bodies; perforated plates (9) are arranged outside the sound absorbing non-woven cloth; and air guide heads (13) are arranged at two ends of the perforated plates (9).

Description

technical field [0001] The invention relates to equipment for controlling noise, in particular to a noise reduction device for a large-scale natural ventilation cooling tower of a thermal power plant. Background technique [0002] At present, there are thousands of large cooling towers of various types in China. This kind of cooling tower has huge geometric dimensions, large noise radiation surface, strong sound power, and the natural attenuation of noise level with distance is very slow. And from the perspective of plane layout, the cooling tower is generally close to the factory boundary, which often causes the environmental noise of the factory boundary and the noise of sensitive points of residents to exceed the standard. In recent years, various environmental protection agencies at home and abroad have done in-depth research on this problem. The well-known noise treatment processes are: 1. Falling water energy dissipation method. A Chinese patent discloses a cooling to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28C1/10
Inventor 胡谦黄怡燊沈吕远许宝勤赵文华葛佳囡楼振纲
Owner ZHEJIANG DONGFA ENVIRONMENTAL PROTECTION ENG
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