Bent type, stepped type and corrugated type noise reduction devices for cooling tower

A cooling tower and noise reduction technology, applied in water shower coolers, heat exchanger types, instruments, etc., can solve the problems of increased ventilation resistance, increased water temperature out of the tower, decreased cooling capacity, etc., to achieve increased ventilation area, The effect of reducing ventilation resistance and improving cooling capacity

Pending Publication Date: 2017-08-22
HUADIAN ELECTRIC POWER SCI INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with before installing the noise reduction device, the noise can be reduced by 20-30dB, but at the same time, the ventilation area of ​​the air inlet of the cooling tower is reduced by about 50% compared with before installation, the ventilation resistance is increased by more than 50Pa, the ventilation volume is reduced by more than 20%, and the cooling capacity is reduced by 15% % or more, the tower water temperature rises by about 1.5°C

Method used

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  • Bent type, stepped type and corrugated type noise reduction devices for cooling tower
  • Bent type, stepped type and corrugated type noise reduction devices for cooling tower
  • Bent type, stepped type and corrugated type noise reduction devices for cooling tower

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] see figure 1 with Figure 4-6 .

[0033] The noise reduction device adopts multiple noise-eliminating guide vane groups 1, each noise-eliminating guide vane group 1 contains multiple noise-eliminating guide vanes 11, and there are multiple noise-eliminating guide vane groups 1 at the air inlet at the bottom of the cooling tower . There are two air inlets at the bottom of the cooling tower. The two air inlets are the front air inlet and the rear air inlet. Arranged silencing deflector group 1.

[0034] Multiple noise-eliminating guide vane groups 1 are installed at the air outlet on the top of the cooling tower. All noise-eliminating guide vanes 11 in the same noise-eliminating guide vane group 1 are installed parallel to each other and horizontally. Any adjacent two The distances between the block silencing guide vanes 11 are all equal, the silencing guide vanes group 1 at the air inlet place is arranged along the vertical direction, and the silencing guide vane gro...

Embodiment 2

[0041] see figure 2 with Figure 4-6 .

[0042] The noise reduction device adopts multiple noise-eliminating guide vane groups 1, each noise-eliminating guide vane group 1 contains multiple noise-eliminating guide vanes 11, and there are multiple noise-eliminating guide vane groups 1 at the air inlet at the bottom of the cooling tower . There are two air inlets at the bottom of the cooling tower. The two air inlets are the front air inlet and the rear air inlet. Arranged silencing deflector group 1.

[0043] Multiple noise-eliminating guide vane groups 1 are installed at the air outlet on the top of the cooling tower. All noise-eliminating guide vanes 11 in the same noise-eliminating guide vane group 1 are installed parallel to each other and horizontally. Any adjacent two The distances between the block silencing guide vanes 11 are all equal, the silencing guide vanes group 1 at the air inlet place is arranged along the vertical direction, and the silencing guide vane gr...

Embodiment 3

[0048] see image 3 with Figure 4-6 .

[0049] The noise reduction device adopts multiple noise-eliminating guide vane groups 1, each noise-eliminating guide vane group 1 contains multiple noise-eliminating guide vanes 11, and there are multiple noise-eliminating guide vane groups 1 at the air inlet at the bottom of the cooling tower . There are two air inlets at the bottom of the cooling tower. The two air inlets are the front air inlet and the rear air inlet. Arranged silencing deflector group 1.

[0050] Multiple noise-eliminating guide vane groups 1 are installed at the air outlet on the top of the cooling tower. All noise-eliminating guide vanes 11 in the same noise-eliminating guide vane group 1 are installed parallel to each other and horizontally. Any adjacent two The distances between the block silencing guide vanes 11 are all equal, the silencing guide vanes group 1 at the air inlet place is arranged along the vertical direction, and the silencing guide vane gro...

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Abstract

The invention relates to a bent type noise reduction device for a cooling tower. The bent type noise reduction device comprises multiple noise elimination flow deflector sets. Each noise elimination flow deflector set comprises multiple noise elimination flow deflectors. An air inlet in the bottom of the cooling tower and an air outlet in the top of the cooling tower are provided with the multiple noise elimination flow deflector sets correspondingly. All the noise elimination flow deflectors in each noise elimination flow deflector set are mutually parallel and horizontally installed at equal intervals. The noise elimination flow deflector sets on the air inlet are distributed in the vertical direction, and the noise elimination flow deflector sets on the air outlet are horizontally installed. The noise elimination flow deflectors in the same noise elimination flow deflector set are mutually parallel. The bent type noise reduction device is characterized in that the noise elimination flow deflectors are in a bent shape, and the center lines of the noise elimination flow deflectors are of a left-right symmetrical structure. The invention further relates to a stepped noise reduction device for the cooling tower and a corrugated type noise reduction device for the cooling tower.

Description

technical field [0001] The present invention relates to a cooling tower noise control device, especially a bending type noise reduction device for cooling towers, a stepped noise reduction device for cooling towers and a corrugated type noise reduction device for cooling towers Noise reduction device. Background technique [0002] Mechanical ventilation cooling towers are widely used cold-end equipment in thermal power plants, with strong noise sources, wide distribution, and wide frequency bands. From the perspective of plane layout, mechanical ventilation cooling towers are generally arranged near the power plant boundary, which often causes excessive noise at the plant boundary and nearby residents and other environmentally sensitive points, which is the main factor affecting the thermal power plant boundary noise compliance. Therefore, it is necessary to carry out noise prevention and control. [0003] The noise of the mechanical draft cooling tower mainly comes from t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28C1/10F28F25/12
CPCF28C1/10F28F25/12
Inventor 陈友良常浩石永锋郝建刚沈志康朱亚迪李飞飞李炜刘志敏雷娇娇
Owner HUADIAN ELECTRIC POWER SCI INST CO LTD
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