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Noise control method for cooling tower

A technology for noise control and cooling tower, applied in the direction of sound-producing equipment, instruments, etc., can solve the problems of high noise of cooling tower, influence of surrounding environment, interference, etc., and achieve the effect of improving noise reduction effect and obvious noise reduction effect.

Inactive Publication Date: 2015-01-28
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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Problems solved by technology

[0002] Due to the high noise of the cooling tower itself, there is no noise reduction treatment for its noise. According to the existing national noise standards, the noise of the cooling tower will interfere with the nearby high-rise residential residents to a certain extent.
The fan noise, falling water noise and structural noise generated during the operation of cooling tower equipment will also have a greater impact on the surrounding environment.

Method used

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  • Noise control method for cooling tower
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  • Noise control method for cooling tower

Examples

Experimental program
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Embodiment

[0024] 1 Analysis of noise source characteristics

[0025] This embodiment belongs to a high-end business hotel-style apartment, and the cooling tower is located on the top of the podium building on the north side (such as figure 1 As shown), its south, west and north sides are adjacent to residential buildings. According to the relevant regulations in GB3096-93 "Standards for Environmental Noise in Urban Areas", when the cooling tower is in operation, all noise-sensitive points near it must meet the requirements of Class 2 in the "Standards for Environmental Noise in Urban Areas", that is, 60dB (A ), 50dB(A) at night. The noise pollution generated by the equipment during operation has a great impact on the daily life of the surrounding residents.

[0026] In order to achieve the effect of optimal noise control, firstly, the operator used B&K high-precision noise spectrum analyzer and TES noise sound level meter to measure the cooling tower fan diversion nozzle, the surround...

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Abstract

The invention provides a noise control method for a cooling tower and relates to a noise control method. The noise control method for the cooling tower comprises the following steps: firstly measuring noise by adopting a B&K high precision noise spectrum analyzer and a TES noise sound level meter, determining the noise according to a noise source, mounting a resistive muffler at a propagation path position, preventing energy of the noise from propagating by adopting a combined type sound barrier, and mounting a damping sound barrier and a wide band combined type sound absorption material, wherein a sound attenuation piece is arranged in the middle of a wide band chip silencer, and the side walls at the left side and the right side are provided with sound absorption materials or have sound absorption structures; and based on field test and analysis and a noise sensitive spot position, isolating the noise by mounting a sound insulation barrier. The noise control method for the cooling tower has the advantages that a noise attenuation effect is obvious, requirements of equipment on ventilation quantity and temperature can be completely met, and a reference is provided for noise control on the cooling tower in engineering practice, so that the noise control method for the cooling tower has guiding significance.

Description

technical field [0001] The invention relates to a noise control method, in particular to a noise control method of a cooling tower. Background technique [0002] Due to the high noise of the cooling tower itself, there is no noise reduction treatment for its noise. According to the existing national noise standards, the noise of the cooling tower will interfere with the nearby high-rise residential residents to a certain extent. The fan noise, falling water noise and structural noise generated during the operation of cooling tower equipment will also have a greater impact on the surrounding environment. Contents of the invention [0003] The object of the present invention is to provide a noise control method of a cooling tower. The present invention analyzes the noise source of the cooling tower, analyzes its frequency spectrum according to the measured noise signal, and judges the main frequency of generating the noise. At the same time, the on-site noise source and tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28C1/10
Inventor 刘欢王健王庆辉李金凤郭烁张琳琳
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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