Noise eliminating structure of natural ventilation cooling tower
A technology of natural ventilation and cooling tower, applied in the direction of sounding equipment, instruments, etc., can solve the problems of high cost and poor shielding effect, and achieve the effect of low cost, small air volume loss and good weather resistance.
Active Publication Date: 2016-05-11
XIAMEN JIADA GREEN CONSTRUCION ENG CO LTD
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Problems solved by technology
The higher the sound insulation barrier, the better the shielding effect, the farther the distance between the sound insulation barrier and the air inlet of the cooling tower, the more diffracted sound waves, the worse the shielding effect
[0009] At the same time, the higher the sound insulation barrier, the higher the requirements for the wind pressure resistance of the sound insulation barrier structure, and the higher the cost.
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[0029] exist figure 1 , 2 In the first embodiment shown, a natural ventilation cooling tower noise reduction structure is composed of an external sound insulation barrier (1), a stepped arrangement of sound insulation and sound absorption bodies (2) and an installation support steel structure (3) . The outer sound insulation barrier (1) is set on the ground (5) outside the air inlet (4) of the cooling tower, and the sound insulation and sound absorption body (2) arranged in steps is arranged between the air inlet (4) of the cooling tower and the outer sound insulation barrier Between (1), the outer sound insulation barrier (1), and the sound insulation and sound absorption body arranged in steps (2) are concentric circular arcs with the center of the natural ventilation cooling tower (6) as the center; the sound insulation arranged in steps The sound absorbing body (2) has two or more layers. The vertical distance between the outer sound insulation barrier (1) and the top o...
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The invention discloses a noise eliminating structure of a natural ventilation cooling tower. The noise eliminating structure is composed of an outer sound insulation barrier, sound insulation absorbers arranged in a cascade manner, and a support steel installing structure, wherein the outer sound insulation barrier is arranged on the ground outside an air inlet of the cooling water; the sound insulation absorbers are arranged between the air inlet of the cooling tower and the outer sound insulation barrier; the outer sound insulation barrier and the sound insulation absorbers are concentric circular arcs taking the center of the natural ventilation cooling tower as the circle center; the sound insulation absorbers are arranged in two layers or multiple layers; the vertical distance from the outer sound insulation barrier to the top of the air inlet of the cooling tower is 1.1-1.3 times the height of the air inlet of the cooling tower; the height of the outer sound insulation barrier is 0.5-0.7 time that of the air inlet of the cooling tower; the outer sound insulation barrier is made of a brick-concrete structure; inorganic sound absorption plates are arranged at a position, close to the air inlet of the cooling tower, in a barrier body. A noise control method without influencing the air pressure and air volume loss of the cooling tower can be provided, and meanwhile, the noise eliminating structure is economic and durable and is good in sound insulation effect.
Description
technical field [0001] The invention relates to the technical field of noise control, in particular to a natural draft cooling tower noise elimination structure capable of eliminating noise air transmission of a large natural draft counterflow wet cooling tower. Background technique [0002] In power plants, the water spray noise of natural ventilation counterflow wet cooling towers has become an important noise source. Due to the special location of some power plants, the cooling towers are close to residential areas, and the noise of cooling towers has seriously affected the daily life of residents. [0003] The natural ventilation wet counterflow cooling tower is currently the most widely used form of cooling tower in China. The noise of the natural ventilation counterflow wet cooling tower is medium-high frequency, high-intensity, and steady-state noise, which comes from the high density in the tower that is equivalent to tens of times the intensity of the rainstorm. Lar...
Claims
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IPC IPC(8): F28C1/10
Inventor 杨锦勇杨超陈明钊蔡瑜珺林嘉祥
Owner XIAMEN JIADA GREEN CONSTRUCION ENG CO LTD