Hyperbolic natural draft cooling tower and large cooling water circulating system

Abstract

The utility model relates to circulating water treatment technical field discloses a kind of hyperbolic natural draft cooling tower and large-scale cooling water circulation system, and the hyperbolic natural draft cooling tower includes: support beam and tower body, water collector, filler layer and air cooler are arranged from top to bottom in tower body, and still be equipped with water distribution assembly, and the falling water area of filler layer and the shell of air cooler at least partially overlap;Water distribution assembly includes first water distribution device and second water distribution device, first water distribution device is connected with filler layer, for cooling water is given to filler layer, second water distribution device is connected with air cooler, for cooling water is given to air cooler.This cooling tower has dry-wet combined operation mode, can be adjusted according to season, climate change and other factors, beneficial to reduce the consumption of water resources, improve the water-saving performance of cooling tower, and flexible switching operation mode, not only energy saving, but also enhance the adaptability of equipment to different climate conditions, effectively prolong the service life of equipment.

Description

Technical Field

[0001] This utility model relates to the field of circulating water treatment technology, and in particular to a hyperbolic natural ventilation cooling tower and a large-scale cooling water circulation system. Background Technology

[0002] Hyperbolic natural draft cooling towers, as an indispensable core component of large-scale cooling water circulation systems, cleverly utilize the physical properties of nature—the convection effect caused by the density difference between the air inside and outside the tower or by natural wind—to achieve a highly efficient heat exchange process without external assistance, effectively reducing the temperature of the circulating cooling water. However, this highly efficient cooling process is also accompanied by a problem that cannot be ignored: a large amount of water evaporation and continuous concentration of the circulating water.

[0003] As water evaporates, dissolved solids in the circulating water gradually accumulate. When the concentration reaches a certain threshold, appropriate external discharge treatment is necessary to ensure that water quality indicators meet standards. Furthermore, traditional natural draft cooling towers consume a large amount of water during operation due to significant evaporation. For example, in power plants, the circulating water system typically accounts for 70% to 80% of the total water consumption, highlighting its dominant role in power plant water resource consumption.

[0004] Therefore, how to reduce the water consumption of traditional natural draft cooling towers during operation is an urgent problem to be solved. Utility Model Content

[0005] The purpose of this utility model is to provide a hyperbolic natural draft cooling tower and a large-scale cooling water circulation system. The hyperbolic natural draft cooling tower has a dry and wet combined operation mode, which can be appropriately adjusted according to seasonal and climate change factors, which helps to reduce water consumption, improve the water-saving performance of the cooling tower, and flexibly switch the operation mode, which not only saves energy, but also enhances the adaptability of the equipment to different climatic conditions and effectively extends the service life of the equipment.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A hyperbolic natural draft cooling tower, comprising:

[0008] Support beam;

[0009] The tower body is installed on the support beam, the support beam is used to support the tower body, and the bottom of the tower body is provided with an air inlet;

[0010] The tower body contains a packing layer, a water collector, and an air cooler. The water collector is located above the packing layer, and the air cooler is located below the packing layer and spaced apart from it. In the direction of extension of the centerline of the tower body, the water drop area of ​​the packing layer at least partially overlaps with the outer shell of the air cooler.

[0011] A water distribution assembly, comprising a first water distribution device and a second water distribution device, wherein the first water distribution device is connected to the packing layer and is used to supply cooling water to the packing layer, and the second water distribution device is connected to the air cooler and is used to supply cooling water to the air cooler;

[0012] A vertical shaft is provided inside the tower body, which is arranged along the extension direction of the center line of the tower body. The vertical shaft is connected to the first water distribution device and is used to deliver cooling water to the first water distribution device.

[0013] The aforementioned hyperbolic natural draft cooling tower uses natural ventilation to cool the cooling water, reducing carbon emissions and contributing to environmental protection, aligning with current concepts of green environmental protection and sustainable development. Furthermore, it features a combined dry and wet operation mode, allowing for appropriate adjustments based on seasonal and climatic changes, thus reducing water consumption, improving the cooling tower's water-saving performance, and flexibly switching operating modes. This not only saves energy but also enhances the equipment's adaptability to different climatic conditions, effectively extending its service life.

[0014] Optionally, the bottom of the shaft is connected to the circulating cooling water inlet pipe, and a first valve is provided between the bottom of the shaft and the circulating cooling water inlet pipe;

[0015] The inlet of the second water distribution device is connected to the circulating cooling water inlet pipe, and a second valve is provided between the inlet of the second water distribution device and the circulating cooling water inlet pipe.

[0016] Optionally, the hyperbolic natural draft cooling tower further includes a control device, wherein both the first valve and the second valve are signal-connected to the control device.

[0017] Optionally, a water collection pool is provided at the bottom of the tower body for collecting cooling water.

[0018] Optionally, the water collection tank is connected to the cooling water circulation system.

[0019] Optionally, the hyperbolic natural draft cooling tower further includes a first platform and a second platform disposed within the tower body, the first platform and the second platform being spaced apart along the extension direction of the centerline of the tower body, the first platform being located above the second platform; the packing layer and the water collector are installed on the first platform, and the air cooler is installed on the second platform.

[0020] Optionally, in the direction of extension of the centerline of the tower body, the water-falling area of ​​the packing layer covers the outer shell of the air cooler.

[0021] Optionally, the packing layer includes multiple packing units stacked along the axial direction of the tower body, with multiple packing units connected in sequence.

[0022] Optionally, the bottom of the tower body is provided with louvers corresponding to the air inlet.

[0023] Based on the same design concept, this technical solution also provides a large-scale cooling water circulation system, including any of the hyperbolic natural draft cooling towers provided in the above technical solutions. Attached Figure Description

[0024] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. Wherein:

[0025] Figure 1 A schematic diagram of the structure of a hyperbolic natural draft cooling tower provided in this embodiment of the present invention;

[0026] Figure 2 A cross-sectional structural diagram of a hyperbolic natural draft cooling tower is provided for an embodiment of this utility model.

[0027] Icons: 1-Support beam; 2-Tower body; 3-Filling layer; 4-Water collector; 5-Air cooler; 6-Shaft; 7-First platform; 8-Second platform. Detailed Implementation

[0028] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Various examples are provided by way of explanation of the present invention and not by way of limitation. In fact, those skilled in the art will recognize that modifications and variations can be made to the present invention without departing from the scope or spirit of the invention. For example, a feature shown or described as part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desirable that the present invention encompass such modifications and variations that fall within the scope of the appended claims and their equivalents.

[0029] In the description of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. The terms "connected," "linked," and "set up" used in this utility model should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; they can refer to a direct connection or an indirect connection through intermediate components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0030] refer to Figure 1 and Figure 2 As shown, this utility model provides a hyperbolic natural ventilation cooling tower. For ease of explanation, in this embodiment, the extension direction of the tower's axis is taken as the vertical direction, with the bottom of the tower facing downwards and the top of the tower facing upwards. Specifically, the hyperbolic natural ventilation cooling tower of this embodiment includes: a support beam 1 and a tower body 2. The tower body 2 is mounted on the support beam 1, and the support beam 1 supports the tower body 2. An air inlet is provided at the bottom of the tower body 2, allowing air to enter through the air inlet at the bottom of the tower, then flow upwards, and exit from the opening on the top side of the tower body 2. Preferably, louvers are provided at the air inlet at the bottom of the tower body 2 to facilitate air circulation and to block foreign objects.

[0031] Inside the tower, a water collector 4, a packing layer 3, and an air cooler 5 are arranged in sequence along the vertical direction. The water collector 4 is located above the packing layer 3, and the air cooler 5 is located below the packing layer 3 and spaced apart from it. Furthermore, in the direction of extension of the centerline of the tower body 2, the water drop area of ​​the packing layer 3 and the outer shell of the air cooler 5 at least partially overlap. Furthermore, a water distribution assembly is also provided inside the tower body 2. The water distribution assembly includes a first water distribution device and a second water distribution device. The first water distribution device is connected to the packing layer 3 and is used to supply cooling water to the packing layer 3. The second water distribution device is connected to the air cooler 5 and is used to supply cooling water to the air cooler 5. The first water distribution device and the packing layer 3 have multiple connection ends, which can make the water intake of the packing layer 3 uniform. Preferably, a vertical shaft 6 is provided inside the tower body 2. The vertical shaft 6 is arranged in a vertical direction and can be located at the center of the tower body 2. The vertical shaft 6 is located in the center of the tower body 2 and is connected to the first water distribution device to supply cooling water to the first water distribution device. The second water distribution device is connected in parallel with the first water distribution device. The second water distribution device can be directly connected to the cooling water circulation pipe of the cooling water circulation system, or it can be connected to the vertical shaft 6.

[0032] In the hyperbolic natural draft cooling tower described above, circulating cooling water flows within the heat exchanger, while air inside the tower body 2 flows upwards. The air undergoes convective heat exchange with the air cooler 5, achieving a dry-cooling operation mode. The packing layer 3 and water collector 4 are located above the air cooler 5. Circulating cooling water enters the packing layer 3 and can be sprayed downwards from the packing layer 3, achieving a wet-cooling operation mode. The dry-cooling and wet-cooling operation modes can operate independently or simultaneously. When they operate simultaneously, it is called a combined dry-wet operation mode. For the operation mode of the hyperbolic natural draft cooling tower, for example, a combined dry and wet operation mode is adopted during high temperatures in summer to improve heat exchange efficiency and effectively reduce water consumption. In this combined mode, the water sprayed from the packing layer 3 can reach the outer wall of the air cooler 5 shell, which helps improve the cooling effect and water-saving efficiency of the air cooler 5. Preferably, to further enhance the cooling effect of the air cooler 5, a water drop area of ​​the packing layer 3 can be set to cover the outer shell of the air cooler 5 along the extension direction of the tower body 2's axis, ensuring that the upper outer wall of the air cooler 5 shell is covered by cooling water, maximizing the sprayed area and further improving the cooling effect. Additionally, the overall cooling water volume of the air cooler 5 and the packing layer 3 can be controlled according to the air temperature and circulating water volume to improve the water-saving efficiency of the cooling tower. In winter, a pure dry-cooling operation mode can be adopted, using only the dry-cooling operation mode for cooling. In this mode, the circulating cooling water is only dry-cooled through the air cooler 5. The air cooler 5 enables effective heat removal without the need for a large amount of water evaporation, further enhancing the overall cooling effect. Moreover, it does not need to pass through the packing layer 3 and the water collector 4, so it consumes almost no water resources. This greatly reduces the evaporation loss and sewage discharge loss of the cooling water in the cooling tower, and greatly improves the water-saving performance of the cooling tower.

[0033] Therefore, the hyperbolic natural draft cooling tower described above uses natural draft to cool the cooling water, reducing carbon emissions and contributing to environmental protection, aligning with current concepts of green environmental protection and sustainable development. Furthermore, it features a combined dry and wet operation mode, allowing for appropriate adjustments based on seasonal and climatic changes, which helps reduce water consumption, improves the cooling tower's water-saving performance, and enables flexible switching between operating modes. This not only saves energy but also enhances the equipment's adaptability to different climatic conditions, effectively extending its service life.

[0034] Specifically, in the cooling water circulation system, there is a circulating cooling water inlet pipe that supplies circulating cooling water to the cooling tower. The bottom of the shaft 6 can be connected to the circulating cooling water inlet pipe, and a first valve is installed between the bottom of the shaft 6 and the circulating cooling water inlet pipe. The inlet of the second water distribution device is connected to the circulating cooling water inlet pipe, and a second valve is installed between the inlet of the second water distribution device and the circulating cooling water inlet pipe. The water flow rate in the packing layer 3 and the air cooler 5 can be controlled by controlling the opening and closing of the first and second valves and the degree of opening and closing.

[0035] To achieve automatic adjustment of the cooling mode, the hyperbolic natural draft cooling tower also includes a control device, with both the first and second valves connected to the control device via signal connections. The control device contains a programmable control module that can control the first and second valves based on factors such as the current season, climate, and temperature, thereby achieving automatic adjustment of the operating mode. In the combined dry and wet operation mode, it can finely regulate the water inflow into the packing layer 3 and the air cooler 5, facilitating the achievement of the optimal cooling mode and reducing cooling water consumption.

[0036] In one possible implementation, a water collection tank is provided at the bottom of the tower body to collect cooling water. The water collection tank can receive and collect cooling water falling from above, reducing cooling water loss and waste. For example, the water collection tank can be directly connected to the cooling water circulation system to reuse the cooling water, improving the water-saving efficiency of the entire circulation system. Alternatively, the cooling water in the water collection tank can be used for other purposes, allowing the cooling water to be reused.

[0037] Regarding the specific setup within a hyperbolic natural draft cooling tower, one possible implementation method is as follows: Figure 2 As shown, a first platform 7 and a second platform 8 are fixedly installed inside the tower body 2. The first platform 7 and the second platform 8 are distributed at intervals along the extension direction of the centerline of the tower body 2, with the first platform 7 located above the second platform 8. The packing layer 3 and the water collector 4 are installed on the first platform 7, and the air cooler 5 is installed on the second platform 8. The packing layer 3, the water collector 4, and the air cooler 5 are directly installed on the first platform 7 and the second platform 8, which facilitates installation and arrangement.

[0038] In one possible implementation, the packing layer can specifically include multiple layers of packing units stacked along the axial direction of the tower body. These multiple packing units are connected sequentially, increasing the contact area between the cooling water and air, thereby improving the cooling effect. For example, the packing units can be three, four, or five layers, or other quantities; this embodiment is not limited to these numbers.

[0039] Based on the same design concept, this embodiment also provides a large-scale cooling water circulation system, including any of the hyperbolic natural draft cooling towers provided in the above embodiments.

[0040] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A hyperbolic natural draft cooling tower, characterized in that, include: Support beam; The tower body is installed on the support beam, the support beam is used to support the tower body, and the bottom of the tower body is provided with an air inlet; The tower body contains a packing layer, a water collector, and an air cooler. The water collector is located above the packing layer, and the air cooler is located below the packing layer and spaced apart from it. In the direction of extension of the centerline of the tower body, the water drop area of ​​the packing layer at least partially overlaps with the outer shell of the air cooler. A water distribution assembly, comprising a first water distribution device and a second water distribution device, wherein the first water distribution device is connected to the packing layer and is used to supply cooling water to the packing layer, and the second water distribution device is connected to the air cooler and is used to supply cooling water to the air cooler; A vertical shaft is provided inside the tower body, which is arranged along the extension direction of the center line of the tower body. The vertical shaft is connected to the first water distribution device and is used to deliver cooling water to the first water distribution device.

2. The hyperbolic natural draft cooling tower according to claim 1, characterized in that, The bottom of the shaft is connected to the circulating cooling water inlet pipe, and a first valve is provided between the bottom of the shaft and the circulating cooling water inlet pipe; The inlet of the second water distribution device is connected to the circulating cooling water inlet pipe, and a second valve is provided between the inlet of the second water distribution device and the circulating cooling water inlet pipe.

3. The hyperbolic natural draft cooling tower according to claim 2, characterized in that, It also includes a control device, and both the first valve and the second valve are signal-connected to the control device.

4. The hyperbolic natural draft cooling tower according to claim 1, characterized in that, The tower body is equipped with a water collection pool at the bottom, which is used to collect cooling water.

5. The hyperbolic natural draft cooling tower according to claim 4, characterized in that, The water collection tank is connected to the cooling water circulation system.

6. The hyperbolic natural draft cooling tower according to claim 1, characterized in that, It also includes a first platform and a second platform disposed within the tower body, the first platform and the second platform being distributed at intervals along the extension direction of the centerline of the tower body, the first platform being located above the second platform; the packing layer and the water collector are installed on the first platform, and the air cooler is installed on the second platform.

7. The hyperbolic natural draft cooling tower according to claim 1, characterized in that, In the direction of extension of the centerline of the tower body, the water-falling area of ​​the packing layer covers the outer shell of the air cooler.

8. The hyperbolic natural draft cooling tower according to claim 1, characterized in that, The packing layer comprises multiple packing units stacked along the axial direction of the tower body, with multiple packing units connected in sequence.

9. The hyperbolic natural draft cooling tower according to claim 1, characterized in that, The bottom of the tower body is provided with louvers corresponding to the air inlet.

10. A large-scale cooling water circulation system, characterized in that, Including the hyperbolic natural draft cooling tower as described in any one of claims 1-9.

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