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A sound-absorbing structure for water cooling towers in power plants

A technology of water cooling towers and cooling towers, which is applied to water shower coolers, sound-generating devices, instruments, etc., and can solve problems such as unguaranteed noise reduction effects, hindered ventilation effects, and unreasonable metal wall noise reduction structures.

Active Publication Date: 2018-05-04
安徽三星环保工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Setting up sound barriers is a reasonable choice for large cooling towers, such as water cooling towers in power plants, but the existing sound barriers use civil exterior walls or metal enclosures, such as civil enclosures, which produce sound attenuation but hinder ventilation; The metal fence has made a ventilation channel, but the noise reduction effect cannot be guaranteed. The reason is that the noise reduction structure of the metal fence is unreasonable. Therefore, a reasonable ventilation and noise reduction equipment is needed to solve the problems existing in the prior art.

Method used

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  • A sound-absorbing structure for water cooling towers in power plants
  • A sound-absorbing structure for water cooling towers in power plants

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Such as figure 1 As shown, a sound-absorbing structure for a water cooling tower in a power plant is composed of several sound-absorbing units 1 connected around the bottom of the water cooling tower 2, and a fixed rod 5 is arranged between each sound-absorbing unit 1 and the water cooling tower 2; The silencing unit 1 is composed of a silencing unit frame 3 and a number of silencing sheets 4 with fixed intervals arranged in the frame, wherein the silencing sheets 4 are arranged obliquely, and the side facing the cooling tower 2 is lower than the opposite side; two adjacent The longitudinal section of the gap between the sound-absorbing plates is a rectangle, and the gap setting of the rectangle follows the following formula: D=2 , where a is the height of the gap, b is the length of the gap, D is the equivalent diameter of the rectangle of the gap, the units of a, b, and D are meters, and 0.01

[0018] The height of the silencing unit 1 is lower ...

Embodiment 2

[0023] The sound-absorbing sheet 4 in the sound-absorbing unit 1 is movably connected with the frame body 3, and the sound-absorbing sheet is rotated by controlling the movable connection point. The gap forms an insulating and sound-absorbing layer.

[0024] This is a special case. In severe cold areas, due to the low temperature, the cooling tower does not require high ventilation, but heat preservation and noise reduction. The adjacent sound-absorbing plates are connected to each other to form a windshield, and the bottom of the cooling tower is surrounded by a relatively closed space, so that the hot water coming down will not freeze easily, and the circulating water pump can pump the water away for circulation.

[0025] The present invention first considers that the root of the noise is the sound of water splashing, instead of processing all the sound frequency bands according to the existing technology, after spectrum analysis, the inventor found that it only needs to pro...

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Abstract

The invention discloses a silencing structure for a power plant water cooling tower. The silencing structure is formed by connecting and combining multiple silencing units around the bottom of the water cooling tower; fixed rods are arranged between all the silencing units and the water cooling tower; the silencing units consists of silencing unit frames, and multiple silencing pieces with fixed intervals in the frames, wherein the silencing pieces are inclined, and the edges thereof towards the cooling tower are lower than the other opposite edges; sections between two adjacent silencing pieces are rectangular gaps; and the rectangular gaps are set by the following formula: FORMULA, wherein a is the heights of the gaps, b is the lengths of the gaps, D is equivalent diameters of rectangles of the gaps, ab is smaller than 2.1 and bigger than 0.01, and D is bigger than 0.11 and smaller than 1.64. The silencing structure thoroughly solves the technical difficulties in noise reduction and ventilation, enables the water spraying noise of the cooling tower to reach environmental protecting requirements, guarantees excellent ventilation effect of the cooling tower, and is provided with an insulation silencing layer in winter for achieving the effects of insulation and freeze prevention.

Description

technical field [0001] The invention relates to a noise control device, in particular to a sound-absorbing structure for a water cooling tower of a power plant. Background technique [0002] Noise control is necessary for the existing industrial environmental protection. There are many forms of power plant cooling towers, and the principle is basically the same, that is, the hot water after heat exchange is pumped to the top of the cooling tower, and then the hot water falls like rain. The cold water is recovered from the lower reservoir for recycling. The bottom of the cooling tower is supported by multiple pillars to form a gap for natural heat dissipation. The noise is generated from the noise emitted from the gap after the water falls to the bottom. In order to control the noise, there are technical reports at home and abroad, such as reducing the water depth, Lay sound-absorbing materials on the water surface, set up sound barriers or set up mufflers. [0003] Setting...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28C1/10
CPCF28C1/10
Inventor 吴光明
Owner 安徽三星环保工程有限公司
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