A new dry-wet combined cooling tower
Patent Information
- Application Number
- CN202522104062.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-29
- Publication Date
- 2026-09-29
- Estimated Expiration
- 2035-09-29
AI Technical Summary
[0004]本实用新型为了解决相关技术中的问题，提供了一种新型干湿联合冷却塔，该装置解决了难以根据季节温度变化实现独立、高效冷却的问题
[0018]上述方案中通过冷却盘管、翅片空冷器的设置，将待冷却介质从输水管通入，经过冷却后的介质，从出水管流出；经过填料结构的空气经翅片空冷器对流经翅片空冷器内的待冷却介质进行预冷。
Smart Images
Figure CN224815441U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cooling tower technology, specifically a novel dry-wet combined cooling tower. Background Technology
[0002] Cooling towers are crucial heat exchange equipment in industrial production, refrigeration, and air conditioning. However, with the increasing prominence of energy shortages and ever-increasing environmental protection requirements, the limitations of traditional cooling towers in terms of seasonal adaptability and energy consumption control are becoming increasingly apparent, making it difficult to meet the current industrial development demand for efficient and energy-saving heat exchange equipment.
[0003] Traditional cooling towers are mainly divided into dry cooling towers and wet cooling towers. Dry cooling towers rely on heat exchange between air and coils to achieve cooling, and there is no water loss due to evaporation. However, their heat exchange efficiency is significantly affected by the ambient temperature. In the hot summer season, due to the high dry-bulb temperature of the air, the driving force for heat exchange is insufficient, and it is often difficult to achieve the ideal cooling effect. It is necessary to increase the power of the equipment or expand the size of the equipment, resulting in a significant increase in energy consumption and cost. Wet cooling towers achieve cooling by absorbing heat through the evaporation of cooling water. They have high heat exchange efficiency, but in the cold winter season, the wet-bulb temperature of the ambient air is low. Excessive evaporation not only wastes a lot of water resources, but also easily causes freeze-thaw phenomena inside the tower and on the surface of the pipes, affecting the service life of the equipment. At the same time, a lot of money needs to be invested in anti-freezing measures and water replenishment. Utility Model Content
[0004] In order to solve the problems in related technologies, this utility model provides a novel dry-wet combined cooling tower, which solves the problem of difficulty in achieving independent and efficient cooling according to seasonal temperature changes.
[0005] To solve the above problems, the following technical solutions are provided: This utility model discloses a novel dry-wet combined cooling tower, comprising a tower body, a first cooling chamber on one side of the tower body, an evaporative cooling structure above the first cooling chamber, a cooling coil below the first cooling chamber, and a spray structure above the evaporative cooling structure. The evaporative cooling structure is used to cool the cooling water sprayed by the spray mechanism. The cooled water contacts the outer surface of the cooling coil and exchanges heat with the medium to be cooled in the cooling coil. A first air inlet is opened on the side wall of the tower body corresponding to the evaporative cooling structure, a second air inlet is opened on the side wall of the tower body corresponding to the cooling coil, and a third air inlet is opened on the top wall of the tower body corresponding to the spray structure. The first, second, and third air inlets are all connected to the interior of the first cooling chamber. A first louver is provided on the second air inlet, and a second louver is provided on the third air inlet. An air outlet connected to the interior of the first cooling chamber is provided at the top of the tower body, and a fan is installed in the air outlet. A water collection tank is provided at the bottom of the tower body.
[0006] By adopting the above scheme, the medium to be cooled is introduced into the cooling coil. During periods of high summer temperature, the first and second louvers and the fan are opened, and the spray structure is activated. Outside air simultaneously enters the tower body through the first, second, and third air inlets. The airflow from the first inlet indirectly exchanges heat with the cooling water within the evaporative cooling structure without direct contact, while the airflow from the third inlet fully contacts the cooling water within the evaporative cooling structure. The evaporation of water rapidly lowers the cooling water temperature. The cooled water then exchanges heat with the medium to be cooled in the cooling coil. Simultaneously, the low-temperature air entering through the second inlet directly acts on the surface of the cooling coil, further reducing the temperature of the medium through heat exchange. As the temperature gradually decreases, the first and second louvers are closed, while the fan and spray structure remain running. Outside air enters the evaporative cooling structure only through the first air inlet, completes evaporative cooling with the cooling water, and then exchanges heat with the medium to be cooled in the cooling coil. Compared to the full-condition operation mode in summer, it reduces the air supply resistance and operating load of the fan, thereby reducing equipment energy consumption; thus solving the problem of difficulty in achieving independent and efficient cooling according to seasonal temperature changes.
[0007] Furthermore, the evaporative cooling structure includes a packing structure and a finned air cooler, the packing structure being located at the first air inlet, and the finned air cooler being located on the side of the packing structure away from the first air inlet.
[0008] In the above scheme, by setting up a packing structure, outside air enters from the first air inlet and comes into contact with the packing structure. The packing structure evenly disperses the cooling water sprayed by the spray structure into a thin film or small droplets, so that the air and cooling water can come into full contact and complete the evaporation heat absorption and cooling.
[0009] Furthermore, a water distribution box is provided between the evaporative cooling structure and the cooling coil.
[0010] The above solution uses a water distribution box to distribute the cooling water evenly after evaporation cooling, ensuring that the heat exchange intensity is the same in all areas of the cooling coil surface, effectively solving the problem of local overheating, and improving the uniformity and stability of the cooling effect.
[0011] Furthermore, a partition is provided below the water distribution box, the partition is located on the side of the cooling coil away from the second air inlet, and a water collector is provided between the partition and the water collection tank.
[0012] The above solution uses a water collector to recover some of the water vapor generated during the heat exchange process of the cooling water on the surface of the cooling coil, thereby improving the water recovery rate in the cooling tower and reducing the cost of water resources.
[0013] Furthermore, the spray structure includes a spray pump and a spray pipe. The inlet of the spray pump is connected to a water collection tank, and the outlet of the spray pump is connected to the spray pipe through a pipe. The spray pipe is equipped with a plurality of spray heads for spraying.
[0014] In the above scheme, by setting up a spray structure, the spray water pump is turned on. The inlet of the spray water pump is connected to the water collection tank, which can re-extract the cooling water collected in the water collection tank after heat exchange, and then transport it to the spray pipe through the pipe connected to the outlet. Finally, it is evenly sprayed out from the spray head, which helps to improve the utilization rate of water resources.
[0015] Furthermore, it also includes a second cooling chamber, which is symmetrically arranged with the first cooling chamber along the centerline of the tower body, and the internal structure of the second cooling chamber is the same as that of the first cooling chamber.
[0016] The above scheme, by incorporating a second cooling chamber, helps to improve the efficiency of the cooling tower.
[0017] Furthermore, the finned air cooler has a water supply pipe at its upper end and a water passage pipe at its lower end. The cooling coil is connected to an outlet pipe at its lower end and an inlet pipe at its upper end. The inlet pipe of the cooling coil is connected to the water passage pipe of the finned air cooler. The water supply pipe, water passage pipe, inlet pipe, and outlet pipe all penetrate the tower body and extend to the outside of the tower body.
[0018] In the above scheme, the medium to be cooled is introduced through the water supply pipe by the setting of cooling coil and finned air cooler, and the cooled medium flows out through the water outlet pipe; the air passing through the packing structure precools the medium to be cooled flowing through the finned air cooler.
[0019] The above solution has the following advantages: This utility model relates to a novel dry-wet combined cooling tower. A medium to be cooled is introduced into the cooling coils. During periods of high summer temperature, the first and second louvers and the fan are opened, and the spray structure is activated. Outside air simultaneously enters the tower body through the first, second, and third air inlets. The airflow from the first air inlet indirectly exchanges heat with the cooling water within the evaporative cooling structure without direct contact, while the airflow from the third air inlet fully contacts the cooling water within the evaporative cooling structure. The evaporation of water rapidly lowers the cooling water temperature. The cooled water then exchanges heat with the medium to be cooled in the cooling coils. Simultaneously, the low-temperature air entering through the second air inlet directly acts on the surface of the cooling coils, further reducing the temperature of the medium through heat exchange. As the temperature gradually decreases, the first and second louvers are closed, while the fan and spray structure remain running. Outside air enters the evaporative cooling structure only through the first air inlet, completes evaporative cooling with the cooling water, and then exchanges heat with the medium to be cooled in the cooling coils. Compared to the full-condition operation mode in summer, the air supply resistance and operating load of the fan are reduced, thereby reducing equipment energy consumption. Attached Figure Description
[0020] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein: Figure 1 This is a schematic diagram of the structure of a novel dry-wet combined cooling tower; Figure 2 This is a cross-sectional view of a novel dry-wet combined cooling tower; Figure 3 for Figure 2 Enlarged diagram of section A in the middle; Figure 4 This is a schematic diagram of the operation of Example 1; Figure 5 This is a schematic diagram of the operation of Example 2; Explanation of reference numerals in the attached drawings: 1. Tower body; 2. First cooling chamber; 3. Cooling coil; 4. First air inlet; 5. Second air inlet; 6. Third air inlet; 7. First louver; 8. Second louver; 9. Fan; 10. Water collection tank; 11. Packing structure; 12. Finned air cooler; 13. Water distribution box; 14. Baffle plate; 15. Water collector; 16. Spray water pump; 17. Spray pipe; 18. Pipe; 19. Spray head; 20. Second cooling chamber; 21. Water outlet pipe; 22. Water inlet pipe. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] In specific embodiment 1, such as Figures 1-5 As shown, this utility model discloses a novel dry-wet combined cooling tower, comprising a tower body 1, a first cooling chamber 2 on one side of the tower body 1, an evaporative cooling structure at the upper part of the first cooling chamber 2, a cooling coil 3 at the lower part of the first cooling chamber 2, and a spray structure above the evaporative cooling structure. The evaporative cooling structure is used to cool the cooling water sprayed by the spray mechanism. The cooled water contacts the outer surface of the cooling coil 3 and exchanges heat with the medium to be cooled in the cooling coil 3. A section is opened on the side wall of the tower body 1 corresponding to the evaporative cooling structure. The tower body 1 has a first air inlet 4, a second air inlet 5 on the side wall of the tower body 1 corresponding to the cooling coil 3, and a third air inlet 6 on the top wall of the tower body 1 corresponding to the spray structure. The first air inlet 4, the second air inlet 5, and the third air inlet 6 are all connected to the interior of the first cooling chamber 2. The second air inlet 5 is provided with a first louver 7, and the third air inlet 6 is provided with a second louver 8. The top of the tower body 1 is provided with an air outlet connected to the interior of the first cooling chamber 2, and a fan 9 is provided in the air outlet. The bottom of the tower body 1 is provided with a water collection tank 10. The medium to be cooled is introduced into the cooling coil 3. In summer, when the temperature is high, the first louver 7, the second louver 8, and the fan 9 are opened, and the spray structure is activated. Outside air simultaneously enters the tower body 1 through the first air inlet 4, the second air inlet 5, and the third air inlet 6. The airflow from the first air inlet 4 indirectly exchanges heat with the cooling water within the evaporative cooling structure without direct contact, while the airflow from the third air inlet 6 fully contacts the cooling water within the evaporative cooling structure. The cooling water temperature is rapidly reduced by absorbing heat through evaporation. The cooled water then exchanges heat with the medium to be cooled in the cooling coil 3. Simultaneously, the low-temperature air entering through the second air inlet 5 directly acts on the surface of the cooling coil 3, further reducing the temperature of the medium to be cooled through heat exchange. As the temperature gradually decreases, the first louver 7 and the second louver 8 are closed, while the fan 9 and the spray structure remain running. Outside air enters the evaporative cooling structure only through the first air inlet 4, completes evaporative cooling with the cooling water, and then exchanges heat with the medium to be cooled in the cooling coil 3. Compared to the full-condition operation mode in summer, the air supply resistance and operating load of fan 9 are reduced, thereby reducing equipment energy consumption.
[0023] The evaporative cooling structure includes a packing structure 11 and a finned air cooler 12. The packing structure 11 is located at the first air inlet 4, and the finned air cooler 12 is located on the side of the packing structure 11 away from the first air inlet 4. Outside air enters through the first air inlet 4 and comes into contact with the packing structure 11. The packing structure 11 evenly disperses the cooling water sprayed by the spray structure into a thin film or small droplets, allowing the air and cooling water to fully contact each other, thus completing the evaporative heat absorption and cooling process.
[0024] A water distribution box 13 is provided between the evaporative cooling structure and the cooling coil 3 to distribute the cooling water after evaporative cooling evenly, ensuring that the heat exchange intensity of each area on the surface of the cooling coil 3 is the same, effectively solving the problem of local overheating, and helping to improve the uniformity and stability of the cooling effect.
[0025] A partition 14 is provided below the water distribution box 13. The partition 14 is located on the side of the cooling coil 3 away from the second air inlet 5. A water collector 15 is provided between the partition 14 and the water collection tank 10 to recover some of the water vapor generated by the cooling water on the surface of the cooling coil 3 during the heat exchange process, thereby improving the water recovery rate in the cooling tower and reducing the cost of water resources.
[0026] The spray structure includes a spray pump 16 and a spray pipe 17. The inlet of the spray pump 16 is connected to the water collection tank 10, and the outlet of the spray pump 16 is connected to the spray pipe 17 through a pipe 18. Several spray heads 19 for spraying are provided on the spray pipe 17. When the spray pump 16 is turned on, the inlet of the spray pump 16 is connected to the water collection tank 10, and the cooling water collected in the water collection tank 10 after heat exchange can be re-extracted and transported to the spray pipe 17 through the pipe 18 connected to the outlet. Finally, it is evenly sprayed out from the spray heads 19, which helps to improve the utilization rate of water resources.
[0027] The finned air cooler 12 has a water supply pipe at its upper end and a water passage pipe at its lower end. The cooling coil 3 has a water outlet pipe 21 connected to its lower end and a water inlet pipe 22 connected to its upper end. The water inlet pipe 22 of the cooling coil 3 is connected to the water passage pipe of the finned air cooler 12. The water supply pipe, water passage pipe, water inlet pipe 22, and water outlet pipe 21 all penetrate the tower body 1 and extend outside the tower body 1. The medium to be cooled is introduced through the water supply pipe, and the cooled medium flows out through the water outlet pipe 21. Air passing through the packing structure pre-cools the medium to be cooled flowing through the finned air cooler 12.
[0028] In this embodiment 1, as Figure 4As shown, when the summer temperature is high, the first louver 7 and the second louver 8 are opened first, then the fan 9 and the spray water pump 16 are turned on. The medium to be cooled is then introduced through the water supply pipe. At this time, under the negative pressure drive of the fan 9, outside air simultaneously flows into the tower body 1 from the first air inlet 4, the second air inlet 5, and the third air inlet 6. The airflow from the first air inlet 4 and the third air inlet 6 enters the evaporative cooling structure together, pre-cooling the medium to be cooled in the finned air cooler 12, and making full contact with the cooling water sprayed by the spray head 19. Through the absorption of heat by water evaporation, the temperature of the cooling water drops rapidly, resulting in a cooling effect. The cooling water then falls naturally along the evaporative cooling structure to the water distribution box 13, which disperses the cooling water into a uniform flow. This uniform flow continues to fall onto the outer surface of the cooling coil 3, where it undergoes indirect heat exchange with the medium to be cooled flowing inside the cooling coil 3. At the same time, the outside air entering through the second air inlet 5 directly acts on the surface of the cooling coil 3, further reducing the temperature of the medium to be cooled. Finally, the cooled medium flows out from the water outlet 21, while the cooled water after heat exchange falls into the water collection tank 10 at the bottom of the tower body 1. The hot and humid air is then discharged from the top air outlet under the action of the fan 9.
[0029] In a specific embodiment 2, such as Figure 5 As shown, as the temperature gradually decreases, such as in spring and autumn, the first louver 7 and the second louver 8 are closed, and then the fan 9 and the spray water pump 16 are turned on. Subsequently, the medium to be cooled is introduced through the water supply pipe. Under the negative pressure guidance of the fan 9, the outside air enters the tower body 1 through the first air inlet 4 and flows to the evaporative cooling structure to pre-cool the medium to be cooled in the finned air cooler 12 and fully contactes with the sprayed cooling water in the evaporative cooling structure. The cooling water is cooled by absorbing heat through water evaporation. The cooled water falls naturally along the evaporative cooling structure to the water distribution box 13. The water distribution box 13 disperses the cooling water into a uniform water flow, which exchanges heat with the medium to be cooled flowing in the cooling coil 3 to achieve the cooling of the medium to be cooled.
[0030] In specific embodiment 3, the difference between this embodiment and embodiments 1 and 2 is that this embodiment also includes a second cooling chamber 20. The second cooling chamber 20 and the first cooling chamber 2 are arranged symmetrically along the center line of the tower body 1, and the internal structure of the second cooling chamber 20 is the same as that of the first cooling chamber 2. The setting of the second cooling chamber 20 is beneficial to improving the efficiency of the cooling tower.
[0031] In the description of this utility model, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise specified and limited, it should be noted that the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components, and can be direct connections or indirect connections through an intermediate medium. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.
[0032] Obviously, the above embodiments are merely examples for clear illustration and are not intended to limit the implementation. For those skilled in the art, other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all implementation methods here, and any obvious variations or modifications derived therefrom are still within the protection scope of this utility model.
Claims
1. A novel dry-wet combined cooling tower, characterized in that, The system includes a tower body, a first cooling chamber on one side of the tower body, an evaporative cooling structure above the first cooling chamber, a cooling coil below the first cooling chamber, and a spray structure above the evaporative cooling structure. A first air inlet is located on the side wall of the tower body corresponding to the evaporative cooling structure, a second air inlet is located on the side wall of the tower body corresponding to the cooling coil, and a third air inlet is located on the top wall of the tower body corresponding to the spray structure. All three air inlets are connected to the interior of the first cooling chamber. A first louver is located on the second air inlet, and a second louver is located on the third air inlet. An air outlet connected to the interior of the first cooling chamber is located at the top of the tower body, and a fan is installed inside the air outlet. A water collection tank is located at the bottom of the tower body.
2. The novel dry-wet combined cooling tower as described in claim 1, characterized in that, The evaporative cooling structure includes a packing structure and a finned air cooler. The packing structure is located at the first air inlet, and the finned air cooler is located on the side of the packing structure away from the first air inlet.
3. A novel dry-wet combined cooling tower as described in claim 1, characterized in that, A water distribution box is provided between the evaporative cooling structure and the cooling coil.
4. A novel dry-wet combined cooling tower as described in claim 3, characterized in that, A partition is provided below the water distribution box. The partition is located on the side of the cooling coil away from the second air inlet. A water collector is provided between the partition and the water collection tank.
5. A novel dry-wet combined cooling tower as described in claim 1, characterized in that, The spray structure includes a spray pump and a spray pipe. The inlet of the spray pump is connected to a water collection tank, and the outlet of the spray pump is connected to the spray pipe through a pipe. The spray pipe is equipped with several spray heads for spraying.
6. A novel dry-wet combined cooling tower as described in claim 1, characterized in that, It also includes a second cooling chamber, which is symmetrically arranged with the first cooling chamber along the center line of the tower body, and the internal structure of the second cooling chamber is the same as that of the first cooling chamber.
7. A novel dry-wet combined cooling tower as described in claim 2, characterized in that, The finned air cooler has a water supply pipe at the upper end and a water passage pipe at the lower end. The cooling coil is connected to a water outlet pipe at the lower end and a water inlet pipe at the upper end. The water inlet pipe of the cooling coil is connected to the water passage pipe of the finned air cooler. The water supply pipe, water passage pipe, water inlet pipe, and water outlet pipe all penetrate the tower body and extend to the outside of the tower body.