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Vortex street flow mixer for dry-wet type cooling tower fog dispersal

A technology of cooling towers and mixers, applied in the direction of water shower coolers, direct contact heat exchangers, heat exchanger types, etc., can solve the problem of low mixing efficiency of mixers, and achieve the effect of avoiding local fogging

Inactive Publication Date: 2017-09-15
江苏海鸥冷却塔股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem of low mixing efficiency of the mixer in the dry-wet demisting tower, the present invention proposes a flow mixer that utilizes the principle of Karman vortex street to mix different air flows evenly, which can make the hot air in the dry area mix evenly with the hot and humid air in the wet area , so as to improve and avoid the phenomenon of partial fogging at the outlet of the cooling tower air duct

Method used

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  • Vortex street flow mixer for dry-wet type cooling tower fog dispersal
  • Vortex street flow mixer for dry-wet type cooling tower fog dispersal
  • Vortex street flow mixer for dry-wet type cooling tower fog dispersal

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Experimental program
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Effect test

Embodiment approach 1

[0019] Implementation mode one: if image 3 As shown, the vortex street mixer is set at the lower part of the dry area, and the strip-shaped obstacles are arranged in two rows on the left and right. The two rows of strip-shaped obstacles are symmetrical about the vertical central axis of the cooling tower, and the lower end of the strip-shaped obstacles is located in the dry area. The bottom of the air inlet of the heat exchanger is close to the side wall of the dry zone, and the upper end is lower than the air inlet section of the fan and close to the vertical central axis plane of the cooling tower. The acute angle between the strip obstacle and the horizontal plane is greater than 30 degrees.

[0020] The width L of the strip obstacle is set within the range of [0.5m, 1m]. The distance S between adjacent bar-shaped obstacles is set to be 0.8 to 1.2 times longer than L. The section of the bar-shaped obstacle selected in this embodiment is an isosceles triangle, which is sh...

Embodiment approach 2

[0022] Implementation mode two: if Figure 4 As shown, the vortex street mixer is set at the upper position of the dry area, and the strip-shaped obstacles are arranged in two rows on the left and right. The two rows of strip-shaped obstacles are symmetrical about the vertical central axis of the cooling tower. The position of the air inlet section, the lower end is located close to the vertical central axis plane of the cooling tower, and the upper end of the bar-shaped obstacle is closer to the side wall of the dry zone than the lower end. The acute angle between the bar-shaped obstacle and the horizontal plane is greater than 30 degrees, and the angle between the bar-shaped obstacle and the vertical central axis plane of the cooling tower is controlled between 30 and 60 degrees.

[0023] The width L of the strip obstacle is set within the range of [0.5m, 1m]. The distance S between adjacent bar-shaped obstacles is set to be 0.8 to 1.2 times longer than L. The section of t...

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Abstract

The invention provides a vortex street flow mixer for dry-wet type cooling tower fog dispersal. The problem that a mixer of an existing dry-wet type fog dispersal tower is low in mixing efficiency is solved. The vortex street flow mixer is achieved in the manner that strip-shaped obstacles are arranged between a dry area air outlet area and a wet area air outlet area of a cooling tower. The vortex street flow mixer comprises the two rows of strip-shaped obstacles which are symmetrically arranged left and right relative to the vertical middle axis plane of the cooling tower. The strip-shaped obstacles are obliquely arranged, and the acute angle formed through intersection of the strip-shaped obstacles and the horizontal plane is larger than 30 degrees. The strip-shaped obstacles are arranged between the bottom of a dry area heat exchanger air outlet and the draught fan air inlet fracture surface of the cooling tower. According to the vortex street flow mixture, the Karman vortex street principle is utilized for evenly mixing the hot air of the dry area and the wet hot air of the wet area evenly, and accordingly the phenomenon of local fogging of a cooling tower air barrel outlet is improved and avoided.

Description

technical field [0001] The invention relates to a dry-wet cooling tower defogging treatment technology, in particular to a vortex street mixer used for dry-wet cooling tower defogging. Background technique [0002] When the cooling tower is in operation in winter, the cold air exchanges heat with water in the tower to generate saturated hot and humid air. After being discharged from the outlet of the cooling tower, it is mixed with the cold air outside the tower. The temperature drops, and the gaseous water vapor in the air will condense to form Many tiny water droplets form fog. The fog at the exit of the tower will affect the visibility of residents and traffic around the tower, cause the surrounding roads to freeze, and affect the landscape. In order to solve this problem, a dry and wet cooling tower is generally used, such as figure 1 shown. This type of cooling tower adds a dry radiator on the upper part of the water eliminator of the cooling tower. When the fog is e...

Claims

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Application Information

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IPC IPC(8): F28C1/16
CPCF28C1/16
Inventor 赵顺安包冰国
Owner 江苏海鸥冷却塔股份有限公司