Water-saving fog dispersal device for cooling tower

Abstract

The utility model discloses a cooling tower water-saving fog dispersal device which comprises a fog dispersal assembly, the fog dispersal assembly is installed at the top of a cooling tower, a cold air opening is formed in the peripheral side of the fog dispersal assembly and located in the side wall of the cooling tower, and cold air entering the cooling tower through the cold air opening exchanges heat with the fog dispersal assembly. The damp and hot air in the fog dispersal assembly is cooled and liquefied to fall, so that recycling and water saving are realized; by arranging the fog dispersal assembly, damp and hot air formed after hot water is cooled in the cooling tower is concentrated, meanwhile, the cold air opening is formed, dry and cold air outside the cooling tower enters the fog dispersal assembly and the damp and hot air in the fog dispersal assembly for heat exchange cooling, and the damp and hot air is cooled and liquefied in the fog dispersal assembly; and the water drops fall back into the cooling tower to realize recycling and water saving, so that the content of water mist particles in exhausted gas is reduced, a certain fog dissipation purpose is achieved, and the influence of fog on production and environment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling towers, in particular to a water-saving and mist-eliminating device for a cooling tower. Background Art

[0002] 80% of industrial water is used for cooling, dissipating heat through evaporation to cool products, materials, or equipment. During the recycling process, 95% of cooling water loss, aside from minor blowdowns and leaks, is due to evaporation losses in the cooling tower's wet cooling process. To maintain normal process production, large quantities of fresh water must be replenished. Therefore, reducing evaporation losses in cooling towers is a new direction for industrial water recycling and conservation.

[0003] When cold air cools circulating water in a mechanical ventilation cooling tower, it undergoes heat exchange with the water inside the cooling tower, transforming into saturated, moist air. At the duct outlet, the steam in the moist air reaches saturation and condenses into small water droplets. These small droplets are lightweight and carry with the wind, forming a plume.

[0004] As environmental regulations increase, so do the requirements for cooling towers. Due to the relatively low height of mechanically ventilated cooling towers, drifting mist can affect visibility in surrounding residential areas and on roads, damaging the urban environment. This can also cause humidity to rise in downwind areas, and plumes of mist can fall to the ground, making roads around the cooling tower slippery or icy. This can affect factory safety and pose significant safety risks to surrounding traffic. With increasing attention to environmental protection, eliminating plume from cooling towers is becoming increasingly important. Utility Model Content

[0005] In view of the shortcomings of the existing technology, a cooling tower water-saving mist elimination device is proposed, which solves the problem in the above background technology that the plume mist falls on the ground, causing the road surface around the cooling tower to become slippery or icy, affecting the safe production of the factory.

[0006] To achieve the above objectives, the present invention proposes the following technologies:

[0007] A cooling tower water-saving and mist-eliminating device includes a mist-eliminating component, which is installed on the top of the cooling tower. Cold air outlets are provided on the surrounding sides of the mist-eliminating component, and the cold air outlets are located on the side walls of the cooling tower. The cold air entering the cooling tower through the cold air outlet exchanges heat with the mist-eliminating component to cool the hot and humid air inside the mist-eliminating component so that it liquefies and falls, thereby realizing water recovery and saving.

[0008] Furthermore, the demisting component is overall conical, with the bottom being a moist hot air inlet and the top being a moist hot air outlet, and a cold air circulation cavity being formed between the demisting component and the inner wall of the cooling tower.

[0009] Furthermore, the demisting assembly includes a heat exchange ring, which is located below the cold air outlet and fixedly installed inside the cooling tower to support the demisting assembly.

[0010] Furthermore, the demisting assembly also includes a first heat exchange ring, the bottom edge of the first heat exchange ring is sealed to the heat exchange ring, and the first heat exchange ring is arranged perpendicular to the air inlet direction of the cold air port.

[0011] Furthermore, a plurality of first folds are provided on the circumference of the first heat exchange ring. The plurality of first folds are evenly distributed along the circumference of the first heat exchange ring. The first folds are bent toward the inner side of the first heat exchange ring.

[0012] Furthermore, the mist elimination assembly also includes a second heat exchange ring, the bottom edge of the second heat exchange ring is sealed to the top of the first heat exchange ring, and the side wall of the second heat exchange ring is arc-shaped.

[0013] Furthermore, the mist elimination component also includes a third heat exchange ring, a plurality of second folds are provided on the circumference of the third heat exchange ring, and an air outlet is opened at the top of the third heat exchange ring.

[0014] Furthermore, a fan is provided above the mist elimination component and is fixed inside the cooling tower. The fan drives external dry cold air to enter the cooling tower through the cold air outlet to exchange heat with the moist hot air inside the cooling tower.

[0015] Furthermore, the top side wall of the cooling tower is arc-shaped, and the curvature is the same as the curvature of the side wall of the second heat exchange ring.

[0016] Compared with the prior art, the comprehensive effects brought by the utility model include:

[0017] By setting up a demisting component, the hot and humid air formed after cooling the hot water in the cooling tower is concentrated. At the same time, a cold air outlet is set to allow the dry cold air outside the cooling tower to enter the demisting component and the hot and humid air inside the demisting component for heat exchange cooling. The hot and humid air is cooled and liquefied inside the demisting component, and the water droplets fall back into the cooling tower to achieve water recycling and saving, thereby reducing the content of water mist particles in the exhaust gas, achieving a certain demisting purpose, and reducing the impact of fog on production and the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the embodiment of the utility model and the cooling tower installation structure;

[0019] Figure 2 This is a schematic structural diagram of the first heat exchange ring in an embodiment of the present utility model;

[0020] Figure 3 This is a schematic structural diagram of the second heat exchange ring in an embodiment of the present utility model.

[0021] Legend: 1. Cooling tower; 2. Cold air outlet; 3. Heat exchange ring; 4. First heat exchange ring; 5. First pleat; 6. Second heat exchange ring; 7. Third heat exchange ring; 8. Second pleat; 9. Fan. DETAILED DESCRIPTION

[0022] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making any creative efforts are within the scope of protection of the present invention.

[0023] In this document, the directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", and "top" are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0024] like Figures 1 to 3 As shown, a cooling tower water-saving and mist-eliminating device includes a mist-eliminating component. The mist-eliminating component is installed on the top of the cooling tower 1. A cold air outlet 2 is provided on the surrounding side of the mist-eliminating component. The cold air outlet 2 is located on the side wall of the cooling tower 1. The cold air entering the cooling tower 1 through the cold air outlet 2 exchanges heat with the mist-eliminating component to cool the hot and humid air inside the mist-eliminating component so that it liquefies and falls to achieve water recovery and saving.

[0025] By setting up a demisting component, the hot and humid air formed after cooling the hot water in the cooling tower 1 is concentrated. At the same time, a cold air outlet 2 is set to allow the dry cold air outside the cooling tower 1 to enter the demisting component and the hot and humid air inside the demisting component for heat exchange cooling. The hot and humid air is cooled and liquefied inside the demisting component, and the water droplets fall back into the cooling tower 1 to realize water recycling and saving, thereby reducing the content of water mist particles in the exhaust gas, achieving a certain demisting purpose, and reducing the impact of fog on production and the environment.

[0026] In the cooling tower water-saving and mist-eliminating device of this embodiment, the mist-eliminating component is conical as a whole, with the bottom as the moist hot air inlet and the top as the moist hot air outlet, and a cold air circulation cavity is formed between the mist-eliminating component and the inner wall of the cooling tower 1.

[0027] Specifically, it is set to a conical structure, and the area of ​​the moist hot air inlet at the bottom is larger than the moist hot air outlet at the top, which is convenient for concentrating the moist hot air generated after the dry cold air entering from the bottom of the cooling tower 1 is heat exchanged with hot water, thereby improving the heat exchange effect with the dry cold air entering from the cold air outlet 2 in the cold air circulation cavity, and effectively liquefying the moist hot air to achieve the purpose of recycling water saving and liquefaction demisting.

[0028] Specifically, a fan 9 is provided above the demisting assembly and fixed inside the cooling tower 1. The fan 9 drives the external dry cold air to enter the cooling tower 1 through the cold air outlet 2 to exchange heat with the moist hot air inside the cooling tower 1. When the fan 9 is running, it simultaneously drives the moist hot air to flow along the path of the moist hot air inlet and the moist hot air outlet inside the demisting assembly, and the external dry cold air enters the cold air circulation cavity from the cold air outlet 2 to exchange heat, thereby cooling and exchanging heat with the moist hot air, facilitating the liquefaction of the mist, and achieving the purpose of demisting.

[0029] In the cooling tower water-saving and mist-eliminating device of this embodiment, the mist-eliminating assembly includes a heat exchange ring 3 , which is located below the cold air outlet 2 and fixedly installed inside the cooling tower 1 to support the mist-eliminating assembly.

[0030] Specifically, a humid hot air inlet is opened at the center of the heat exchange ring 3. When the humid hot air flows upward in the cooling tower 1, the humid hot air close to the inner wall of the cooling tower 1 contacts the heat exchange ring 3. At the same time, the dry cold air entering from the cold air outlet 2 flows through the surface of the heat exchange ring 3 to realize heat exchange, so that the humid hot air at the edge is liquefied and condensed on the lower surface of the heat exchange ring 3 to achieve demisting.

[0031] Preferably, the side wall of the heat exchange ring 3 is tilted, and the height of the side of the heat exchange ring 3 connected to the cooling tower 1 is lower than the edge of the moist hot air inlet, thereby increasing the contact area between the dry cold air and the heat exchange ring 3 and improving the heat exchange effect.

[0032] In the cooling tower water-saving and mist-eliminating device of this embodiment, the mist-eliminating component also includes a first heat exchange coil 4, the bottom edge of which is sealed with the heat exchange ring 3, and the first heat exchange coil 4 is arranged perpendicular to the air inlet direction of the cold air outlet 2.

[0033] Specifically, the first heat exchange ring 4 is provided to further concentrate the hot and humid air, and at the same time increase the contact area with the dry and cold air in the cold air circulation cavity, thereby improving the heat exchange efficiency, so that the hot and humid air is effectively condensed into droplets on the inner wall of the first heat exchange ring 4; the side wall of the first heat exchange ring 4 is provided to be perpendicular to the air inlet direction of the cold air outlet 2, so as to facilitate the dry and cold air to blow directly to the first heat exchange ring 4, thereby further improving the heat exchange efficiency.

[0034] Preferably, a plurality of cold air inlets 2 are evenly arranged on the side wall of the cooling tower 1, and the plurality of cold air inlets 2 introduce dry cold air from all sides to perform heat exchange with the hot and humid air in the demisting component.

[0035] In the cooling tower water-saving and mist-eliminating device of this embodiment, a plurality of first folds 5 are provided on the circumferential side of the first heat exchange ring 4. The plurality of first folds 5 are evenly distributed along the circumference of the first heat exchange ring 4, and the first folds 5 are bent toward the inner side of the first heat exchange ring 4.

[0036] Specifically, through the above-mentioned arrangement, the heat exchange area between moist hot air and dry cold air is further increased, the heat exchange efficiency is improved, the liquefaction efficiency of moist hot air is improved, and the recovery and defogging effect is enhanced.

[0037] Preferably, the first heat exchange ring 4 is plum blossom-shaped, and its bottom is the moist hot air inlet. The heat exchange ring 3 is located outside the first heat exchange ring 4. The above arrangement ensures that the moist hot air flow path in the demisting component is unobstructed, and at the same time facilitates the falling of liquefied water droplets.

[0038] In the cooling tower water-saving and mist-eliminating device of this embodiment, the mist-eliminating component further includes a second heat exchange ring 6, the bottom edge of the second heat exchange ring 6 is sealed to the top of the first heat exchange ring 4, and the side wall of the second heat exchange ring 6 is arc-shaped.

[0039] Specifically, the second heat exchange ring 6 is provided to further concentrate the humid hot air. At the same time, the arc-shaped side wall increases the contact area with the dry cold air, and can also guide the flow direction of the dry cold air, so that the dry cold air flows evenly on the surface of the second heat exchange ring 6 to improve the heat exchange effect.

[0040] Preferably, the bottom of the second heat exchange ring 6 is in a plum blossom shape that matches the first heat exchange ring 4, and the arc of its side is bent inward. Correspondingly, the top side wall of the cooling tower 1 is arc-shaped, and the curvature is the same as the curvature of the side wall of the second heat exchange ring 6. Through the above-mentioned setting, the flow direction of the dry cold air in the cold air circulation cavity is further guided to make it flow smoothly, thereby improving the contact heat exchange effect.

[0041] In the cooling tower water-saving and mist-eliminating device of this embodiment, the mist-eliminating assembly further includes a third heat exchange ring 7 , a plurality of second folds 8 are provided on the circumference of the third heat exchange ring 7 , and an air outlet is provided at the top of the third heat exchange ring 7 .

[0042] Specifically, a third heat exchange ring 7 is provided to realize multiple heat exchange and avoid insufficient heat exchange of humid hot air. The second heat exchange ring 6 connects the third heat exchange ring 7 and the first heat exchange ring 4 on the upper and lower sides. A sealing plate is provided on the top of the second heat exchange ring 6. The sealing plate is provided with a mounting hole that matches the bottom of the third heat exchange ring 7. The second fold 8 increases the heat exchange contact area.

[0043] Preferably, the top of the third heat exchange coil 7 and the top of the cooling tower 1 are respectively provided with filter screens to filter droplets and impurities and assist in mist removal.

[0044] The three-layer heat exchange ring structure and the heat exchange ring 3 are set to realize the conical flow guidance of the moist hot air, increase the contact area between the dry cold air and the defogging component, facilitate the heat exchange of the dry cold air with the moist hot air, improve the mist liquefaction efficiency, and improve the water-saving defogging effect.

[0045] In the present invention, unless otherwise clearly stipulated and limited, the terms "installation", "setting", "connection", "fixation", "rotation" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0046] Although the embodiments of the present invention have been shown and described in detail, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cooling tower water-saving mist elimination device, characterized in that: It includes a demisting component, which is installed on the top of the cooling tower. Cold air outlets are provided on the surrounding sides of the demisting component, and the cold air outlets are located on the side walls of the cooling tower. The cold air entering the cooling tower through the cold air outlet exchanges heat with the demisting component to cool the hot and humid air inside the demisting component so that it liquefies and falls to achieve water recovery and saving.

2. The cooling tower water-saving mist elimination device according to claim 1, characterized in that: The demisting component is tapered as a whole, with a bottom portion being a moist hot air inlet and a top portion being a moist hot air outlet, and a cold air circulation cavity being formed between the demisting component and the inner wall of the cooling tower.

3. The cooling tower water-saving mist elimination device according to claim 1, characterized in that: The demisting assembly includes a heat exchange ring, which is located below the cold air outlet and is fixedly installed inside the cooling tower to support the demisting assembly.

4. The cooling tower water-saving mist elimination device according to claim 3, characterized in that: The demisting assembly further includes a first heat exchange ring, the bottom edge of which is sealed with the heat exchange ring, and the first heat exchange ring is arranged perpendicular to the air inlet direction of the cold air outlet.

5. The cooling tower water-saving mist elimination device according to claim 4, characterized in that: A plurality of first folds are provided on the circumferential side of the first heat exchange ring. The plurality of first folds are evenly distributed along the circumference of the first heat exchange ring. The first folds are bent toward the inner side of the first heat exchange ring.

6. The cooling tower water-saving mist elimination device according to claim 4, characterized in that: The mist elimination assembly further includes a second heat exchange ring, the bottom edge of the second heat exchange ring is sealedly connected to the top of the first heat exchange ring, and the side wall of the second heat exchange ring is arc-shaped.

7. The cooling tower water-saving mist elimination device according to claim 6, characterized in that: The mist elimination component further includes a third heat exchange ring, a plurality of second folds are provided on the circumference of the third heat exchange ring, and an air outlet is provided on the top of the third heat exchange ring.

8. The cooling tower water-saving mist elimination device according to claim 1, characterized in that: A fan is provided above the mist elimination component and is fixed inside the cooling tower. The fan drives external dry cold air to enter the cooling tower through the cold air outlet to exchange heat with the hot and humid air in the cooling tower.

9. The cooling tower water-saving mist elimination device according to claim 6, characterized in that: The top side wall of the cooling tower is arc-shaped, and the curvature is the same as the curvature of the side wall of the second heat exchange ring.

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