A water-saving cooling tower

Abstract

This utility model discloses a water-saving cooling tower, including a base, a cooling tower body, a water circulation mechanism, a demisting mechanism, and a dust prevention mechanism. The cooling tower body is located on the upper surface of the base, and four sets of air inlet grilles are provided on the outer surface of the cooling tower body. A motor is connected to the upper surface of the cooling tower body, and a fan is connected to the output end of the motor. The water circulation mechanism includes a first water inlet pipe, a second water inlet pipe, a first water distribution pipe, a second water distribution pipe, an outlet pipe, and a water pump. The first water inlet pipe is located on the side wall of the cooling tower body and passes through the cooling tower body to connect to the first water distribution pipe. The outlet pipe is located on the other side wall of the cooling tower body, and the other end of the outlet pipe is connected to the water pump. The other end of the water pump is connected to the second water inlet pipe, and the other end of the second water inlet pipe passes through the cooling tower body to connect to the second water distribution pipe, which is located above the first water distribution pipe. This water-saving cooling tower effectively reduces water waste while improving cooling efficiency.

Description

Technical Field

[0001] This utility model relates to the field of cooling tower technology, and more specifically, to a water-saving cooling tower. Background Technology

[0002] Cooling towers are industrial heat dissipation devices that utilize the contact between water and air to lower the water temperature through evaporation. Hot water is sprayed down from the top of the tower, while air flows upwards or horizontally, carrying away the heat, and the hot, humid air is discharged from the top. Cooling towers are used to remove waste heat generated in industrial processes, maintaining equipment at safe operating temperatures. They are commonly used in energy and power, petrochemical, and HVAC industries. The core driving force behind designing water-saving cooling towers lies in addressing the contradiction between the global water crisis and sustainable industrial development.

[0003] Most existing cooling towers require large amounts of water for cooling. The nozzles in current spray systems have large apertures, resulting in significant splashing and water loss upon impact with the packing layer. Simultaneously, the small surface area of ​​water droplets leads to insufficient gas-liquid heat exchange, reducing cooling efficiency and unnecessarily increasing water replenishment. Existing cooling towers lack heat cascade utilization; hot spray water falls directly into the cold water pool, resulting in low utilization of already cooled water and overall low heat dissipation efficiency. The hot, humid airflow carries a large number of droplets, continuously wasting water resources and causing corrosion of surrounding equipment and environmental pollution. Inefficient evaporation forces an increase in spray volume, but splashing and droplet formation further amplify losses, while water mist overflow increases the burden of equipment maintenance, ultimately leading to a double waste of water and energy. Therefore, there is an urgent need to design a water-saving cooling tower to solve these problems. Utility Model Content

[0004] (a) Technical problems to be solved In view of the problems existing in the prior art, this utility model provides a water-saving cooling tower to solve the technical problems mentioned in the background art, such as low heat dissipation efficiency of existing cooling towers and the waste of a large amount of water resources caused by the discharge of a large number of micro-droplets carried by the hot and humid airflow.

[0005] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: A water-saving cooling tower includes a base, a cooling tower body, a water circulation mechanism, a demisting mechanism, and a dust prevention mechanism. The cooling tower body is located on the upper surface of the base. Four sets of air inlet grilles are provided on the outer surface of the cooling tower body. A motor is connected to the upper surface of the cooling tower body, and a fan is connected to the output end of the motor. The water circulation mechanism includes a first water inlet pipe, a second water inlet pipe, a first water distribution pipe, a second water distribution pipe, an outlet pipe, and a water pump. The first water inlet pipe is located on the side wall of the cooling tower body and passes through the cooling tower body to connect to the first water distribution pipe. The outlet pipe is located on the other side wall of the cooling tower body and is connected to the water pump at the other end. The other end of the water pump is connected to the second water inlet pipe and passes through the cooling tower body to connect to the second water distribution pipe. The second water distribution pipe is located above the first water distribution pipe, and a packing layer is provided below the first water distribution pipe.

[0006] The present invention is further configured such that each of the first and second water distribution pipes is provided with a plurality of nozzles, and the lower end face of each nozzle is provided with a plurality of spray nozzles. The nozzles are evenly distributed on the water pipes to ensure that the water flow covers the filler layer.

[0007] The present invention is further configured such that the nozzle is a high-pressure, small-diameter nozzle. The high-pressure, small-diameter nozzle atomizes the water flow, forming fine water droplets, increasing the water-air contact area, improving evaporation efficiency, accelerating heat dissipation, and at the same time reducing water droplet splashing and wind drift losses, thus reducing water waste.

[0008] The present invention is further configured such that the dust prevention mechanism includes a filter screen, a support frame, and a baffle. The filter screen is disposed on the inner wall of the cooling tower body, below the fan. One end of the support frame is connected to the upper surface of the cooling tower body, and the other end is connected to a conical baffle. The dust prevention mechanism prevents dust and debris from falling directly into the tower, prevents clogging of the packing layer, extends the life of the packing layer, and reduces maintenance costs.

[0009] This invention is further configured such that the demisting mechanism includes a mounting plate and bent demisting plates. Two sets of mounting plates are provided, each connected to the inner wall of the cooling tower. Several bent demisting plates are arranged between the two sets of mounting plates. The demisting mechanism reduces water vapor leakage, recovers drift droplets, and reduces water waste.

[0010] The present invention is further configured such that the mounting plate is V-shaped, and the bent demister plate is inclined between the two sets of mounting plates. The bent demister plate is made of polypropylene. The V-shaped design of the mounting plate, combined with the inclined setting of the bent demister plate, significantly increases the probability of droplet collision, allowing for the collection of more droplets. The inclined angle facilitates the falling of condensed water droplets, and the polypropylene material is corrosion-resistant and highly hydrophobic, extending the service life of the equipment.

[0011] The present invention is further configured such that a climbing frame is provided on the upper surface of the base, and the climbing frame is connected to the outer surface of the cooling tower. The climbing frame provides an inspection passage, facilitating the maintenance of components such as the fan and improving the maintainability of the equipment.

[0012] (III) Beneficial Effects Compared with the prior art, this utility model provides a water-saving cooling tower with the following advantages: 1. This utility model is equipped with a water circulation mechanism. Hot water first enters the cooling tower body through the first inlet pipe, and is evenly sprayed onto the packing layer through the first distribution pipe. The water droplets that have undergone preliminary cooling fall to the bottom of the tower under the action of gravity and are discharged through the outlet pipe. After being pressurized by the water pump, they are transported to the second distribution pipe through the second inlet pipe for secondary spray cooling, which cools the hot water sprayed from the first distribution pipe. The dual-stage water distribution design significantly improves the cooling efficiency and water resource utilization rate.

[0013] 2. This utility model is equipped with a demisting mechanism. When the humid mist rises and comes into contact with the surface of the bent demisting plate, the water mist will condense into water droplets and adhere to the plate. As the water droplets continue to accumulate and grow larger, they will eventually drip back into the tower under the action of gravity. The V-shaped design of the mounting plate, combined with the inclined setting of the bent demisting plate, significantly improves the probability of droplet collision and can collect more drifting droplets. The inclined angle facilitates the falling of condensed water droplets and effectively reduces water waste.

[0014] 3. This utility model, by setting a high-pressure, small-diameter nozzle, can atomize water flow to form fine water droplets, increase the water-air contact area, improve evaporation efficiency, accelerate heat dissipation, and at the same time reduce water droplet splashing and wind drift loss, thereby reducing water waste. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a water-saving cooling tower according to the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of a water-saving cooling tower according to the present invention. Figure 2 ; Figure 3 This is an internal sectional view of the cooling tower body of a water-saving cooling tower according to the present invention; Figure 4 This is a schematic diagram of the water distribution pipe structure of a water-saving cooling tower according to the present invention; Figure 5 This is a schematic diagram of the demisting mechanism of a water-saving cooling tower according to the present invention.

[0016] In the diagram: 1. Base; 2. Cooling tower body; 3. Air inlet grille; 4. Motor; 5. Fan; 6. First water inlet pipe; 7. Second water inlet pipe; 8. First water distribution pipe; 9. Second water distribution pipe; 10. Water outlet pipe; 11. Water pump; 12. Packing layer; 13. Spray nozzle; 14. Nozzle; 15. Filter screen; 16. Support frame; 17. Baffle; 18. Mounting plate; 19. Bending demister plate; 20. Climbing frame. Detailed Implementation

[0017] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0019] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0020] Please see Figures 1-5 A water-saving cooling tower includes a base 1, a cooling tower body 2, a water circulation mechanism, a demisting mechanism, and a dust prevention mechanism. The cooling tower body 2 is located on the upper surface of the base 1. The outer surface of the cooling tower body 2 is provided with four sets of air inlet grilles 3. A motor 4 is connected to the upper surface of the cooling tower body 2. A fan 5 is connected to the output end of the motor 4. The water circulation mechanism includes a first water inlet pipe 6, a second water inlet pipe 7, a first water distribution pipe 8, a second water distribution pipe 9, a water outlet pipe 10, and a water pump 11. The first water inlet pipe 6 is located on the side wall of the cooling tower body 2 and passes through the cooling tower body 2 to connect to the first water distribution pipe 8. The water outlet pipe 10 is located on the other side wall of the cooling tower body 2 and the other end of the water outlet pipe 10 is connected to the water pump 11. The other end of the water pump 11 is connected to the second water inlet pipe 7 and the other end of the second water inlet pipe 7 passes through the cooling tower body 2 to connect to the second water distribution pipe 9. The second water distribution pipe 9 is located above the first water distribution pipe 8, and a packing layer 12 is located below the first water distribution pipe 8.

[0021] In a further embodiment, the surfaces of the first water distribution pipe 8 and the second water distribution pipe 9 are each provided with a plurality of nozzles 13, and the lower end face of each nozzle 13 is provided with a plurality of nozzles 14. The nozzles 14 are high-pressure, small-diameter spray holes. The nozzles 13 are evenly distributed on the first water distribution pipe 8 and the second water distribution pipe 9 to ensure that the water flow covers the filler layer 12. The high-pressure, small-diameter nozzles 14 atomize the water flow, forming fine water droplets, increasing the water-air contact area, improving evaporation efficiency, accelerating heat dissipation, and at the same time reducing water droplet splashing and wind drift loss, thus reducing water waste.

[0022] In a further embodiment, the dustproof mechanism includes a filter screen 15, a support frame 16, and a baffle 17. The filter screen 15 is disposed on the inner wall of the cooling tower body 2, below the fan 5. One end of the support frame 16 is connected to the upper surface of the cooling tower body 2, and the other end is connected to the conical baffle 17. The filter screen intercepts dust and debris in the air, preventing blockage of the packing layer 12. The conical baffle 17 prevents rainwater and debris from falling directly into the tower, while guiding airflow, extending the service life of the equipment, and reducing maintenance costs.

[0023] In a further embodiment, the demisting mechanism includes a mounting plate 18 and bent demisting plates 19. Two sets of mounting plates 18 are provided, each connected to the inner wall of the cooling tower body 2. A plurality of bent demisting plates 19 are provided between the two sets of mounting plates 18. The mounting plates 18 are V-shaped, and the bent demisting plates 19 are inclined between the two sets of mounting plates 18. The bent demisting plates 19 are made of polypropylene.

[0024] When the humid mist passes through the demister mechanism, it comes into contact with the surface of the bent demister plate 19, where it condenses into water droplets and adheres to the surface. As the droplets accumulate and grow larger, they eventually drip back into the tower under the influence of gravity. The V-shaped design of the mounting plate 18, combined with the inclined setting of the bent demister plate 19, significantly increases the probability of droplet collision, allowing for the collection of more droplets. The inclined angle facilitates the falling of condensed water droplets. The polypropylene material is corrosion-resistant and highly hydrophobic, extending the service life of the equipment and effectively reducing water waste.

[0025] In a further embodiment, a climbing frame 20 is provided on the upper surface of the base 1, and the climbing frame 20 is connected to the outer surface of the cooling tower body 2. The climbing frame 20 provides a maintenance passage, allowing workers to reach the top of the cooling tower for easy maintenance of components such as fans, thus improving equipment maintainability.

[0026] In summary, when using the overall equipment: In this invention, hot water first enters the cooling tower body 2 through the first inlet pipe 6, and after being evenly distributed through the first distribution pipe 8, it is sprayed onto the packing layer 12 as a fine water mist through the nozzles 13 and high-pressure small-diameter nozzles 14. The small-diameter nozzles 14 effectively reduce water droplet splashing and wind drift loss. During this process, the fine water droplets come into full contact with the air entering from the air inlet grille 3, and heat exchange is achieved through evaporation. The water droplets, after initial cooling, fall to the bottom of the tower under gravity and are discharged through the outlet pipe 10. After being pressurized by the water pump 11, they are transported to the second distribution pipe 9 through the second inlet pipe 7 for secondary spray cooling, which cools the hot water sprayed from the first distribution pipe 8. The dual-stage water distribution design significantly improves cooling efficiency and water resource utilization.

[0027] In terms of airflow, the motor 4 drives the fan 5 to operate, forming a forced airflow that carries water vapor upwards. When the wet mist passes through the demisting mechanism, the wet mist comes into contact with the surface of the bent demisting plate 19, and the water mist condenses into water droplets and adheres to the plate. As the water droplets continue to accumulate and grow larger, they will eventually drip back into the tower under the action of gravity, effectively reducing water mist emissions and further reducing water waste.

[0028] Throughout the operation, the conical baffle 17 prevents external debris from entering, while the climbing frame 20 provides a convenient passage for equipment maintenance. This multi-stage cooling and efficient demisting design achieves significant water savings and stable cooling performance.

[0029] In all the solutions mentioned above, the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although the embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents. In all the solutions mentioned above, those involving the operation of electrical components, unless otherwise specified, are controlled by a controller. Since the devices matched with the controllers are common devices, their control principles and circuit connections are existing, well-known, and mature technologies, and their electrical connection relationships and specific circuit structures will not be elaborated here. Of all the solutions mentioned above, those involving motors can be combined with reducers if necessary. The connection structure and working principle between the motor and the reducer are existing known technologies, and this utility model will not elaborate on them. Of all the solutions mentioned above, those involving the connection between solar panels and batteries can be equipped with essential accessories such as inverters, battery charging controllers, cables, fuses, and brackets. Their control principles and circuit connections are all existing, well-known, and mature technologies, so their electrical connection relationships and specific circuit structures will not be elaborated here.

Claims

1. A water-saving cooling tower comprising a base (1), a cooling tower body (2), a water circulating mechanism, a defogging mechanism and a dustproof mechanism, characterized in that: The upper surface of the base (1) is provided with a cooling tower body (2), and the outer surface of the cooling tower body (2) is provided with four sets of air inlet grilles (3). The upper surface of the cooling tower body (2) is connected to a motor (4), and the output end of the motor (4) is connected to a fan (5). The water circulation mechanism includes a first water inlet pipe (6), a second water inlet pipe (7), a first water distribution pipe (8), a second water distribution pipe (9), a water outlet pipe (10), and a water pump (11). The first water inlet pipe (6) is located on the side wall of the cooling tower body (2). Pipe (6) passes through the cooling tower body (2) and is connected to the first water distribution pipe (8). The water outlet pipe (10) is located on the other side wall of the cooling tower body (2). The other end of the water outlet pipe (10) is connected to the water pump (11). The other end of the water pump (11) is connected to the second water inlet pipe (7). The other end of the second water inlet pipe (7) passes through the cooling tower body (2) and is connected to the second water distribution pipe (9). The second water distribution pipe (9) is located above the first water distribution pipe (8). A packing layer (12) is provided below the first water distribution pipe (8).

2. A water conserving cooling tower according to claim 1, characterized in that: The first water distribution pipe (8) and the second water distribution pipe (9) are each provided with a number of nozzles (13), and the lower end face of the nozzles (13) is provided with a number of nozzles (14).

3. A water conserving cooling tower according to claim 2, characterised in that: The nozzle (14) is selected as a high-pressure small-diameter nozzle.

4. A water conserving cooling tower according to claim 1, characterized in that: The dustproof mechanism includes a filter screen (15), a support frame (16) and a baffle (17). The filter screen (15) is located on the inner wall of the cooling tower body (2) and below the fan (5). One end of the support frame (16) is connected to the upper surface of the cooling tower body (2), and the other end is connected to a conical baffle (17).

5. A water conserving cooling tower according to claim 1, wherein: The demisting mechanism includes an mounting plate (18) and a bent demisting plate (19). The mounting plate (18) is provided in two sets, which are respectively connected to the inner wall of the cooling tower body (2). A number of bent demisting plates (19) are provided between the two sets of mounting plates (18).

6. A water conserving cooling tower according to claim 5 wherein: The mounting plate (18) is V-shaped, and the bent demister plate (19) is inclined between the two sets of mounting plates (18). The bent demister plate (19) is made of polypropylene.

7. A water conserving cooling tower according to claim 1 wherein: The upper surface of the base (1) is provided with a climbing frame (20), which is connected to the outer surface of the cooling tower body (2).

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