Water-saving white smoke eliminating structure of cooling tower

Abstract

The utility model discloses a water-saving white-eliminating structure of a cooling tower, which belongs to the technical field of cooling towers, and comprises a plurality of vortex modules, each vortex module comprises a main body part, a plurality of vent holes are uniformly distributed in the circumferential direction of each main body part, one axial end of each main body part is closed, and the other axial end of each main body part is provided with an opening; a confluence cavity is formed in the middle of the main body part, the vent holes are communicated with the confluence cavity, the vent holes are inclined in the radial direction of the main body part and are arranged in the rotating direction, and the rotating directions of the vent holes are the same. Wet and hot air in the cooling tower can enter the cooling tower through the vent holes in the circumferential direction of the vortex module, water vapor forms vortex after passing through the vent holes, collision gathering of the water vapor and small liquid drops is increased, the small liquid drops are gathered into large liquid drops in the confluence cavity and flow back to the cooling tower, generation of rime fog is reduced, and evaporation loss of cooling water is reduced; and the purposes of white smoke elimination and water saving are achieved.

Description

Technical Field

[0001] This utility model relates to a cooling tower technology, and more specifically, to a water-saving and whitening structure for a cooling tower. Background Technology

[0002] Traditional cooling towers, as the primary evaporative cooling equipment in industrial production, use water as the circulating cooling medium. Heat exchange occurs between the water and the dry, cold air drawn in by the rotating fan, generating steam to dissipate the heat absorbed by the system and lower the temperature of the circulating water. However, because water vapor contains a large amount of heat, it condenses into water mist as it moves towards the air, leading to environmental degradation, equipment damage, and significant evaporation losses. With increasingly stringent environmental regulations, water-saving and white mist-eliminating technologies in cooling towers are essential for reducing industrial water consumption and mitigating environmental pollution caused by water mist emissions, making significant water conservation and white mist reduction a necessary choice for enterprises seeking high-quality development.

[0003] For example, Chinese Patent Publication No. CN214582607U, published on November 2, 2021, describes a utility model entitled "Cooling Tower Defogging Mechanism." It includes at least three diaphragms stacked together, with air channels formed between adjacent diaphragms. Dry, cold air and humid, hot air are respectively introduced into the adjacent air channels, with the airflow directions opposite in each other. This proposed cooling tower defogging mechanism is applied to water-saving cooling towers or the retrofitting of wet cooling towers. Installed on the top of a wet cooling tower, the diaphragms employ a partitioned heat exchange structure, forming two isolated sets of air channels. One set of channels carries newly introduced dry, cold air, while the other carries humid, hot air that has undergone heat exchange through the packing section. This allows for heat exchange between the hot and cold air within the diaphragms, preheating the dry, cold air, reducing its relative humidity, and condensing the saturated humid, hot air into water droplets that fall back into a water tank. However, this solution has a certain degree of structural complexity, and its water-saving and defogging effects are not ideal. Utility Model Content

[0004] This invention overcomes the problems of complex structures and poor water-saving effects in existing cooling towers, and provides a water-saving and whitening structure for cooling towers. This solution utilizes a vortex module to create a vortex effect when water vapor passes through, increasing the collision and aggregation of small water vapor droplets, thereby achieving the purpose of water saving and whitening in the cooling tower.

[0005] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: a water-saving and white fog-eliminating structure for a cooling tower, comprising several vortex modules. Each vortex module includes a main body with several vent holes evenly distributed circumferentially. One axial end of the main body is closed, and the other end is open. A confluence cavity is provided in the middle of the main body, and the vent holes are connected to the confluence cavity. The vent holes are radially inclined along the main body and arranged in a vortex direction, with several vent holes having the same vortex direction. The circumferential vent holes of the vortex modules allow hot and humid air inside the cooling tower to enter. Water vapor forms vortices after passing through the vent holes, increasing the collision and aggregation of water vapor and small droplets. Small droplets aggregate into larger droplets in the confluence cavity and flow back to the cooling tower, reducing the generation of white fog, reducing cooling water evaporation loss, and achieving the purpose of eliminating white fog and saving water.

[0006] Preferably, the vortex module further includes a mounting portion, which is located on the axially open side of the main body and on the outer periphery of the main body. The mounting portion is used for installing the vortex module, facilitating its installation inside the cooling tower; the mounting portion's location on the axially open side of the main body promotes the backflow of liquid condensed on the mounting portion, preventing the increased weight of the vortex module from causing displacement of the device.

[0007] Preferably, the vent is arranged along the axial direction of the main body and is an elongated through-hole. The axial length of the vent along the main body is close to the axial length of the main body, thus increasing the effective air intake area of ​​the vent and improving the air intake efficiency.

[0008] Preferably, a fixing frame is also provided inside the opening of the main body, and the fixing frame is provided with circumferentially evenly distributed baffles. The baffles on the fixing frame can obstruct the hot and humid airflow entering the confluence cavity of the main body, thereby forming condensed water droplets on the baffles, improving the condensation of hot and humid gas and the recovery of condensate.

[0009] Preferably, the baffle is located at the output end of the vent. The baffle's placement at the output end of the vent facilitates the formation of water droplets from the hot, humid airflow within the cooling tower.

[0010] Preferably, the vent hole is provided with a return water hole near the closed end of the main body, and the width of the return water hole is larger than that of the vent hole. The return water hole is located at the bottom of the vent hole, and the return water hole and the vent hole are an integral hole structure. The wider design of the return water hole is beneficial to the return flow of condensate and avoids interference with the ventilation effect.

[0011] Preferably, the system also includes a support frame with fixing parts adapted to the mounting portion. These fixing parts are evenly distributed on the support frame, which is fixedly mounted inside the cooling tower. The support frame is used to fix and install the vortex modules, which are then arranged inside the cooling tower. The even distribution of the vortex modules on the support frame effectively concentrates the hot and humid airflow inside the tower into large droplets.

[0012] Preferably, several of the vortex modules are evenly distributed on the support frame to form a water-saving and whitening component; one to three groups of the water-saving and whitening component are distributed along the axial direction of the cooling tower. One to three groups of the water-saving and whitening component can be arranged, and the specific arrangement can be selected according to the height of the cooling tower and the temperature and humidity inside the cooling tower, thereby improving the water-saving and whitening effect.

[0013] Preferably, the cooling tower is also equipped with an air supply device located above the water-saving and white fog-eliminating components. The air supply device can supply dry, cool air to the top of the tower, further reducing the temperature and humidity of the exhaust gas from the cooling tower, thereby eliminating the conditions for white fog formation.

[0014] Compared with the prior art, the beneficial effects of this utility model are: (1) By using the vortex module, the water vapor forms a vortex effect when it passes through, which increases the collision and aggregation of small water vapor droplets and achieves the purpose of water saving and whitening in the cooling tower; (2) The structure is simple and stable, and it is relatively easy to arrange in the cooling tower; (3) The water saving and whitening effect is better, and it can achieve stable air intake and droplet return; reducing the evaporation loss of industrial water. Attached Figure Description

[0015] Figure 1 This is a cross-sectional view of the bottom of the eddy current module of this utility model.

[0016] Figure 2 This is a cross-sectional view of the main body at the top of the eddy current module of this utility model (the mounting part is not cross-sectional).

[0017] Figure 3 This is a side view of the eddy current module of this utility model.

[0018] Figure 4 This is a schematic diagram of the water-saving and whitening component of this utility model.

[0019] Figure 5 This is a schematic diagram illustrating the application of the water-saving and whitening components inside the cooling tower of this utility model.

[0020] In the diagram: 1. Cooling tower, 2. Vortex module, 3. Main body, 4. Vent hole, 5. Combination cavity, 6. Mounting part, 7. Fixing frame, 8. Baffle plate, 9. Water return hole, 10. Support frame, 11. Fixing part, 12. Water-saving and whitening component, 13. Air supply device. Detailed Implementation

[0021] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0022] Example 1: As Figures 1 to 3 The water-saving and white powder elimination structure of the cooling tower shown includes a vortex module 2. The vortex module 2 includes an integral mounting part 6 and a main body part 3. The main body part 3 has a cylindrical structure and a hollow interior. Ventilation holes 4 are provided on the main body part 3. The ventilation holes 4 are evenly distributed along the circumferential surface of the main body part and penetrate through the main body part 3, forming obliquely arranged ventilation holes 4 on the main body part 3. Specifically, in this embodiment, there are a total of six groups of ventilation holes 4. The six groups of ventilation holes 4 are inclined relative to the radial direction of the main body part 3 and form a spiral arrangement. The bottom of the main body 3 is closed, while the top of the main body 3 is open. When the hot and humid air inside the cooling tower 1 rises to the position of the vortex module 2, the hot and humid airflow cannot enter from the bottom of the vortex module 2 but can only enter from the vent 4 on the circumferential surface. Since the vent 4 is inclined and arranged in a swirling direction, the hot and humid airflow will enter the vortex module 2 in a certain swirling direction and form a vortex in the confluence cavity 5. At this time, the hot and humid airflow enters the confluence cavity 5 with a smaller radial dimension from the outside of the vortex module 2 with a larger outer diameter, and the flow velocity is also increased. This enhances the collision and aggregation effect of water vapor and small droplets, causing the small droplets to gather into large droplets in the confluence cavity 5 and flow back to the cooling tower 1, thereby reducing the generation of white mist, reducing the evaporation loss of cooling water, and achieving the purpose of eliminating white mist and saving water.

[0023] All vent holes 4 must rotate in the same direction, either clockwise or counterclockwise. Inconsistent rotation directions make the design and layout of the vent holes 4 more difficult and negatively impact ventilation. Furthermore, the eddy current module 2 can be made of materials such as ABS, FRP, FRPP, 304 stainless steel, or corrosion-resistant carbon steel to improve its service life within the cooling tower 1.

[0024] The mounting part 6 of the vortex module 2 is arranged at the upper end of the main body 3, that is, at the opening end of the main body 3. In this embodiment, the mounting part 6 is a rectangular plate structure, and the mounting part 6 and the main body 3 are an integral structure. The mounting part 6 is provided with a through hole structure, and the size of the through hole is the same as the size of the opening at the axial end of the main body 3. In this way, the through hole on the mounting part 6 also serves as part of the air outlet structure of the vortex module 2. That is, the air outlet plane of the vortex module 2 is flush with the upper surface of the mounting part 6. When the vortex module 2 is working in the cooling tower 1, liquid droplets will condense or fall on the surface of the vortex module 2. When there are enough droplets, a liquid film will form on the upper surface of the mounting part 6. At this time, as the liquid film thickens, it will enter the confluence chamber 5 of the vortex module 2 through the through hole on the surface of the mounting part 6, and the liquid will flow back. The liquid film on the surface of the mounting part 6 will only be relatively thin, thereby effectively reducing the overall weight of the vortex module 2 and preventing the vortex module 2 from falling into the cooling tower 1 due to its large weight. If the mounting part 6 is placed at the bottom or middle of the eddy current module 2, a thick layer of water will form on the upper surface of the eddy current module 2.

[0025] It should be noted that both the input and output ends of the vent 4 are rectangular or elongated (e.g., oblong holes), which effectively increases the effective ventilation area of ​​the vent 4. Specifically, the vent 4 is arranged along the axial length of the main body 3, meaning that the length of the vent 4's input and output ends is close to the axial length of the main body 3.

[0026] A fixing frame 7 is also provided at the open end of the main body 3 of the vortex module 2. The fixing frame 7 is a circular support and is arranged inside the opening of the main body 3. The fixing frame 7 includes an inner ring and an outer ring, and six sets of baffles 8 are arranged between the inner ring and the outer ring. The fixing frame 7 is embedded in the opening of the main body 3 through the outer ring and forms a circumferential fixation. The six sets of baffles 8 between the inner ring and the outer ring are evenly distributed circumferentially, and the inner ring and the outer ring are fixed together by the baffles 8. Two sets are provided on both the inner ring and the outer ring, and are located at the upper and lower ends of the baffles 8, respectively, thereby fixing all the baffles 8. The baffles 8 on the fixing frame 7 can obstruct the humid and hot airflow entering the confluence cavity 5 of the main body 3, thereby forming condensed water droplets on the baffles 8, improving the condensation of humid and hot gas and the recovery of condensate. The radial outer side of the baffle plate 8 is located at the output end of the vent 4. When the hot and humid airflow enters the vortex module 2, it is output through the output end of the vent 4 and can directly collide with the baffle plate 8. This helps the hot and humid airflow form water droplets and reduces evaporation loss.

[0027] A return water hole 9 is also provided at the bottom of the vent 4. The return water hole 9 and the vent 4 are an integral hole structure. The vent 4 is mainly long and narrow, while the return water hole 9 is mainly narrow and wide, with the width of the return water hole 9 being greater than the width of the vent 4. Water droplets will accumulate inside the internal confluence cavity 5 of the vortex module 2. If the water droplets are not drained in time, the overall volume of the confluence cavity 5 will decrease, thereby reducing the air intake effect of the vent 4. It should be noted that the height of the return water hole 9 (axial dimension along the main body 3) is designed to be 10mm to ensure the water return effect of the return water hole 9. If the height is designed to be too large, it may affect the air intake effect of the vent 4; if the height is designed to be too small, the liquid may not be able to drain from the confluence cavity 5 due to the surface tension of the droplets.

[0028] Example 2: As Figures 1 to 5 The water-saving and white powder elimination structure of the cooling tower shown includes a vortex module 2. The vortex module 2 includes an integral mounting part 6 and a main body part 3. The main body part 3 has a cylindrical structure and a hollow interior. Ventilation holes 4 are provided on the main body part 3. The ventilation holes 4 are evenly distributed along the circumferential surface of the main body part and penetrate through the main body part 3, forming obliquely arranged ventilation holes 4 on the main body part 3. Specifically, in this embodiment, there are a total of six groups of ventilation holes 4. The six groups of ventilation holes 4 are inclined relative to the radial direction of the main body part 3 and form a spiral arrangement. The bottom of the main body 3 is closed, while the top of the main body 3 is open. When the hot and humid air inside the cooling tower 1 rises to the position of the vortex module 2, the hot and humid airflow cannot enter from the bottom of the vortex module 2 but can only enter from the vent 4 on the circumferential surface. Since the vent 4 is inclined and arranged in a swirling direction, the hot and humid airflow will enter the vortex module 2 in a certain swirling direction and form a vortex in the confluence cavity 5. At this time, the hot and humid airflow enters the confluence cavity 5 with a smaller radial dimension from the outside of the vortex module 2 with a larger outer diameter, and the flow velocity is also increased. This enhances the collision and aggregation effect of water vapor and small droplets, causing the small droplets to gather into large droplets in the confluence cavity 5 and flow back to the cooling tower 1, thereby reducing the generation of white mist, reducing the evaporation loss of cooling water, and achieving the purpose of eliminating white mist and saving water.

[0029] All vent holes 4 must rotate in the same direction, either clockwise or counterclockwise. Inconsistent rotation directions make the design and layout of the vent holes 4 more difficult and negatively impact ventilation. Furthermore, the eddy current module 2 can be made of materials such as ABS, FRP, FRPP, 304 stainless steel, or corrosion-resistant carbon steel to improve its service life within the cooling tower 1.

[0030] The mounting part 6 of the vortex module 2 is arranged at the upper end of the main body 3, that is, at the opening end of the main body 3. In this embodiment, the mounting part 6 is a rectangular plate structure, and the mounting part 6 and the main body 3 are an integral structure. The mounting part 6 is provided with a through hole structure, and the size of the through hole is the same as the size of the opening at the axial end of the main body 3. In this way, the through hole on the mounting part 6 also serves as part of the air outlet structure of the vortex module 2. That is, the air outlet plane of the vortex module 2 is flush with the upper surface of the mounting part 6. When the vortex module 2 is working in the cooling tower 1, liquid droplets will condense or fall on the surface of the vortex module 2. When there are enough droplets, a liquid film will form on the upper surface of the mounting part 6. At this time, as the liquid film thickens, it will enter the confluence chamber 5 of the vortex module 2 through the through hole on the surface of the mounting part 6, and the liquid will flow back. The liquid film on the surface of the mounting part 6 will only be relatively thin, thereby effectively reducing the overall weight of the vortex module 2 and preventing the vortex module 2 from falling into the cooling tower 1 due to its large weight. If the mounting part 6 is placed at the bottom or middle of the eddy current module 2, a thick layer of water will form on the upper surface of the eddy current module 2.

[0031] It should be noted that both the input and output ends of the vent 4 are rectangular or elongated (e.g., oblong holes), which effectively increases the effective ventilation area of ​​the vent 4. Specifically, the vent 4 is arranged along the axial length of the main body 3, meaning that the length of the vent 4's input and output ends is close to the axial length of the main body 3.

[0032] A fixing frame 7 is also provided at the open end of the main body 3 of the vortex module 2. The fixing frame 7 is a circular support and is arranged inside the opening of the main body 3. The fixing frame 7 includes an inner ring and an outer ring, and six sets of baffles 8 are arranged between the inner ring and the outer ring. The fixing frame 7 is embedded in the opening of the main body 3 through the outer ring and forms a circumferential fixation. The six sets of baffles 8 between the inner ring and the outer ring are evenly distributed circumferentially, and the inner ring and the outer ring are fixed together by the baffles 8. Two sets are provided on both the inner ring and the outer ring, and are located at the upper and lower ends of the baffles 8, respectively, thereby fixing all the baffles 8. The baffles 8 on the fixing frame 7 can obstruct the humid and hot airflow entering the confluence cavity 5 of the main body 3, thereby forming condensed water droplets on the baffles 8, improving the condensation of humid and hot gas and the recovery of condensate. The radial outer side of the baffle plate 8 is located at the output end of the vent 4. When the hot and humid airflow enters the vortex module 2, it is output through the output end of the vent 4 and can directly collide with the baffle plate 8. This helps the hot and humid airflow form water droplets and reduces evaporation loss.

[0033] A return water hole 9 is also provided at the bottom of the vent 4. The return water hole 9 and the vent 4 are an integral hole structure. The vent 4 is mainly long and narrow, while the return water hole 9 is mainly narrow and wide, with the width of the return water hole 9 being greater than the width of the vent 4. Water droplets will accumulate inside the internal confluence cavity 5 of the vortex module 2. If the water droplets are not drained in time, the overall volume of the confluence cavity 5 will decrease, thereby reducing the air intake effect of the vent 4. It should be noted that the height of the return water hole 9 (axial dimension along the main body 3) is designed to be 10mm to ensure the water return effect of the return water hole 9. If the height is designed to be too large, it may affect the air intake effect of the vent 4; if the height is designed to be too small, the liquid may not be able to drain from the confluence cavity 5 due to the surface tension of the droplets.

[0034] like Figure 4 As shown, each eddy current module 2 is mounted and fixed by a support frame 10. Specifically, the support frame 10 has a rectangular array of multiple fixing parts 11. The fixing parts 11 have rectangular hole structures and are adapted to the size of the mounting parts 6 of the eddy current module 2. The fixing parts 11 have countersunk hole structures inside. By placing the mounting parts 6 in the countersunk hole positions of the fixing parts 11, the eddy current module 2 can be initially fixed. The support frame 10 is made of a high-strength and corrosion-resistant material.

[0035] After each fixing part 11 on the support frame 10 is equipped with a vortex module 2, a water-saving and whitening component 12 is formed. The water-saving and whitening component 12 is fixed inside the cooling tower 1 by the support frame 10. At this time, the main body 3 of the vortex module 2 is arranged downwards, and the mounting part 6 is arranged upwards. In order to further improve the water-saving and whitening effect inside the cooling tower 1, multiple sets of water-saving and whitening components 12 can be arranged inside the cooling tower 1. Of course, the specific design can also be made according to the actual height of the cooling tower 1 and the temperature and humidity inside the cooling tower 1.

[0036] like Figure 5 As shown, an air supply device 13 is also arranged on the cooling tower 1 above the water-saving and white fog elimination component 12. The air supply device 13 can be a fan, which can supply dry and cold air to the top of the tower, further reducing the temperature and humidity of the exhaust gas from the cooling tower 1, thereby eliminating the conditions for white fog generation.

Claims

1. A water-saving and white powder-eliminating structure for a cooling tower, characterized in that, It includes several vortex modules, each vortex module having a main body with several vent holes evenly distributed around its circumference. One end of the main body is closed along its axial direction, while the other end is open. A confluence cavity is provided in the middle of the main body, and the vent holes are connected to the confluence cavity. The vent holes are inclined along the radial direction of the main body and arranged in a spiral direction, with several vent holes having the same spiral direction.

2. The water-saving and white powder elimination structure of a cooling tower according to claim 1, characterized in that, The eddy current module also includes a mounting part, which is located on the axial opening side of the main body and on the outer periphery of the main body.

3. The water-saving and whitening structure of a cooling tower according to claim 2, characterized in that, The vent is arranged along the axial direction of the main body and is an elongated through hole.

4. The water-saving and whitening structure of a cooling tower according to claim 2, characterized in that, The main body is also provided with a fixing frame inside the opening, and the fixing frame is provided with circumferentially evenly distributed baffles.

5. The water-saving and whitening structure of a cooling tower according to claim 4, characterized in that, The baffle plate is located at the output end of the vent.

6. A water-saving and white-whitening structure for a cooling tower according to any one of claims 1 to 5, characterized in that, The vent hole is provided with a water return hole near the closed end of the main body, and the width of the water return hole is greater than the width of the vent hole.

7. A water-saving and white-whitening structure for a cooling tower according to any one of claims 2 to 5, characterized in that, It also includes a support frame, on which a fixing part adapted to the mounting part is provided. The fixing part is evenly distributed on the support frame, and the support frame is fixed inside the cooling tower.

8. The water-saving and whitening structure of a cooling tower according to claim 7, characterized in that, Several of the aforementioned vortex modules are evenly distributed on the support frame to form a water-saving and whitening component; at least one set of the water-saving and whitening component is distributed along the axial direction of the cooling tower.

9. The water-saving and white powder elimination structure of a cooling tower according to claim 8, characterized in that, The cooling tower is also equipped with an air supply device located above the water-saving and whitening component.

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