Cooling tower and cooling tower temperature control system with same

Abstract

The utility model relates to the technical field of cooling towers, and particularly discloses a cooling tower which comprises a cooling tower body, a water distributor is arranged in the cooling tower body and comprises a rotatable water distribution disc, the water distribution disc comprises a shell, a water distribution pipe and fan blades, the fan blades are arranged along the outer wall of the shell at intervals, a plurality of water leakage holes are formed in the water distribution pipe at intervals, and the water leakage holes are communicated with the shell. And the water distribution pipe is communicated with the shell, and the water distribution pipe is attached to the lower surfaces of the fan blades and extends from inside to outside in the radial direction of the shell. The utility model further discloses a cooling tower temperature control system with the cooling tower temperature control system. The cooling tower solves the problems that the fan power of a traditional cooling tower is high, and the operation cost of an enterprise is increased.

Description

Technical Field

[0001] This utility model relates to the field of cooling tower technology, and in particular to a cooling tower and a cooling tower temperature control system having the same. Background Technology

[0002] In industrial production processes, cooling towers, as important heat dissipation devices, are widely used in various applications requiring reduced fluid temperature. Traditional cooling towers primarily rely on forced ventilation via top fans to promote heat dissipation.

[0003] However, the power of the fans at the top of cooling towers is usually quite high. For example, a 300-ton cooling tower has a fan power of up to 11 kW. Moreover, the fans need to run continuously to ensure the cooling tower's normal heat dissipation function. This results in huge energy consumption during the cooling tower's operation. If calculated based on continuous 24-hour operation, the power consumption of the fans alone reaches 264 kWh. This high-energy-consuming operating mode increases the company's operating costs. Utility Model Content

[0004] To address the problem that the high power consumption of traditional cooling towers increases operating costs for businesses, this invention provides a cooling tower solution.

[0005] This utility model also proposes a cooling tower temperature control system having the above-mentioned cooling tower.

[0006] To solve the above problems, the present invention adopts the following technical solution:

[0007] A first aspect of this utility model provides a cooling tower, comprising:

[0008] The cooling tower body includes a water distributor, which comprises a rotatable water distribution plate, a housing, a water distribution pipe, and fan blades. The fan blades are spaced apart along the outer wall of the housing. The water distribution pipe has a plurality of drainage holes spaced apart, the drainage holes being inclined to the vertical direction. The water distribution pipe is connected to the housing and fits against the lower surface of the fan blades, extending radially from the inside to the outside of the housing.

[0009] A cooling tower according to an embodiment of this utility model has at least the following beneficial effects: When water is sprayed through the drain hole, the water distribution pipe of the water distributor of this utility model uses the reaction force of the water flow to drive the fan blades to rotate, thereby generating airflow. This cleverly converts the water flow power into mechanical motion, achieving continuous fan blade rotation without the need for an additional power device, thus eliminating the need to install a separate fan at the top of the cooling tower. This design not only simplifies the structure of the cooling tower and reduces equipment costs, but also greatly reduces the high energy consumption problem caused by continuous fan operation.

[0010] According to some embodiments of the present invention, the water distributor further includes a connecting rope, one end of which is connected to the end of the fan blade and the other end of which is connected to the housing.

[0011] According to some embodiments of this utility model, the shell, the water distribution pipe, and the fan blade are integrally formed.

[0012] According to some embodiments of this utility model, the end of the water distribution pipe is provided with a water spraying structure.

[0013] According to some embodiments of the present invention, the water spraying structure includes a plurality of water spraying holes.

[0014] According to some embodiments of the present invention, the surface of the water spraying structure is an outwardly convex arc shape, and a plurality of the water spraying holes are arranged radially along the surface of the water spraying structure.

[0015] A second aspect of this utility model provides a cooling tower temperature control system, including a cooling tower according to the first aspect of this utility model, a control device, and a temperature sensor for detecting the outlet water temperature of the cooling tower body. The cooling tower body also includes a fan. The control device is used to control the operation of the fan. When the temperature sensor detects that the outlet water temperature of the cooling tower body is lower than a preset value, the control device controls the fan to stop operating.

[0016] A cooling tower temperature control system according to an embodiment of this utility model has at least the following beneficial effects: When the cooling water temperature is too high, and the cooling tower fan blades alone cannot reduce the cooling water temperature to a preset value, the control device can promptly start the fan for further cooling. The operation of the fan increases airflow, allowing heat to dissipate from the cooling tower more quickly, thereby improving cooling efficiency. Furthermore, this utility model monitors the water temperature at the cooling tower outlet in real time using a temperature sensor and controls the fan operation according to a preset value. When the water temperature falls below the preset value, the fan stops operating, avoiding continuous 24-hour operation of the fan.

[0017] According to some embodiments of the present invention, a cooling tower temperature control system further includes a circulating water tank for holding cooling water, a circulating water pump, and a heat exchange device. The circulating water tank is located below the cooling tower body, and the circulating water tank, the circulating water pump, the heat exchange device, and the cooling tower body are sequentially connected. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the first aspect of the present utility model;

[0019] Figure 2 This is a schematic diagram of the structure of an embodiment of the second aspect of the present utility model;

[0020] Figure 3 This is a schematic diagram of the structure of a water distribution plate according to an embodiment of the first aspect of this utility model;

[0021] Figure 4 This is a partial structural diagram of the fan blades and water distribution pipe according to an embodiment of the first aspect of this utility model. Detailed Implementation

[0022] This invention provides the following description with reference to the accompanying drawings to aid in a comprehensive understanding of the various embodiments of the invention as defined by the claims and their equivalents. The description includes various specific details to aid understanding, but these details should be considered exemplary only. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the various embodiments described herein without departing from the scope and spirit of the invention.

[0023] In the description of this utility model, the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0024] It should be understood that when one element (e.g., the first element) is “connected” to another element (e.g., the second element), the element may be directly connected to the other element, or there may be an intervening element (e.g., the third element) between the element and the other element.

[0025] An embodiment of the first aspect of this utility model provides a cooling tower, such as... Figure 1-4 As shown, it includes:

[0026] The cooling tower body 100 has a water distributor 110 inside. The water distributor 110 includes a rotatable water distribution plate 120. The water distribution plate 120 includes a shell 121, a water distribution pipe 122 and a fan blade 124. The fan blade 124 is spaced along the outer wall of the shell 121. The water distribution pipe 122 is provided with a plurality of drainage holes 123 spaced along it. The drainage holes 123 are inclined to the vertical direction. The water distribution pipe 122 is connected to the shell 121. The water distribution pipe 122 fits against the lower surface of the fan blade 124 and extends from the inside to the outside along the radial direction of the shell 121.

[0027] The water distributor 110 is used to evenly distribute cooling water onto the packing layer of the cooling tower. The water distribution plate 120 is rotatable, thereby achieving uniform distribution of cooling water. The housing 121 serves to support and protect the internal components. The water distribution pipe 122 is used to transport cooling water. The water distribution pipe 122 is provided with several drainage holes 123 at intervals, which are used to evenly spray cooling water onto the packing layer of the cooling tower. In actual use, cooling water enters the water distributor 110 through the inlet pipe and flows into the water distribution pipe 122, then forms a water flow through the drainage holes 123 on the water distribution pipe 122, spraying onto the packing of the cooling tower. Because the diameter of the drainage holes 123 is relatively small, the water flow has a certain velocity. According to the principle of action and reaction, the water distribution pipe 122 is subjected to a force opposite to the direction of the water flow and rotates, so that the water flow is continuously distributed onto the packing of the cooling tower. Water adheres to the surface of the packing material, forming a film-like flow that increases the water-air contact interface. Air flows counter-currently with the water within the tower, exchanging heat and causing some water to vaporize, carrying away heat and thus lowering the water temperature. The water distribution pipe 122 is connected to the shell 121, ensuring a stable supply of cooling water as the water distribution plate 120 rotates. The drain hole 123 is angled; when cooling water is sprayed onto the packing material, the action and reaction forces cause the water distributor 110 to rotate. The orientation and vertical inclination angle of the drain hole 123 can be adjusted according to the cooling tower design and cooling requirements. In some embodiments, the inclination angle is between 10° and 45° to ensure uniform distribution of cooling water across the packing layer.

[0028] Fan blades 124 are spaced apart along the outer wall of the housing 121. Water distribution pipes 122 are connected to the fan blades 124 and are attached to the lower surface of the fan blades 124. When cooling water flows into the water distribution pipe 122 and is sprayed out through the drain hole 123, the reaction force generated by the water flow not only causes the water distribution pipe 122 to rotate but also drives the connected fan blades 124 to rotate together. This structural design cleverly converts the power of the water flow into mechanical motion, achieving continuous rotation of the fan blades 124 without the need for an additional power unit, thus saving energy and increasing efficiency. Its function is to generate power through rotation, enabling the water distribution plate 120 to operate continuously, thereby achieving uniform distribution of cooling water. The airflow generated by the rotation of the fan blades 124 driven by the water distribution pipe 122 effectively enhances the cooling effect of the cooling tower, improves cooling efficiency, and ensures that the cooling water reaches the required low temperature, meeting the stringent temperature requirements of cooling water in industrial production and other scenarios. The structure of the fan blade 124 is similar to that of a common fan blade. The water distribution pipe 122 drives the fan blade 124 to rotate, generating airflow. This principle is similar to that of a regular fan and will not be elaborated further here. The airflow generated by the water distribution pipe 122 driving the fan blade 124 causes the air to flow counter-currently with the water flow inside the tower for heat exchange. In some embodiments, additional components (such as a fan) can be added to further increase the airflow rate. Those skilled in the art will understand that the direction of the airflow generated by the additional components needs to be the same as the direction of the airflow generated by the rotation of the fan blade 124 driven by the water distribution pipe 122 to achieve the effect of further increasing the airflow rate. This design, which uses the rotation of the fan blade 124 driven by the water distribution pipe 122 to achieve cooling water temperature reduction, is not only simple in structure and low in cost, but also makes full use of the power of the water flow without the need for additional power input. It has a high energy efficiency ratio and practicality, providing a strong guarantee for the efficient operation of the cooling tower.

[0029] The working principle of this utility model is as follows:

[0030] The water distribution pipe 122 drives the fan blades 124 to rotate, creating airflow inside the cooling tower. As the fan blades 124 rotate, the surrounding air is agitated and accelerated. The airflow is opposite to the cooling water flow, meaning the air and water flow are in a counter-current state. When the air flows through the packing layer of the cooling tower, it undergoes thorough heat exchange with the cooling water adhering to the packing surface. On one hand, the airflow accelerates the evaporation of water on the cooling water surface, absorbing a large amount of heat during the evaporation process, thereby lowering the cooling water temperature; on the other hand, the airflow further increases the heat difference between the cooling water and the surrounding environment, promoting heat transfer and enabling the cooling water to dissipate heat and cool down more quickly.

[0031] In some embodiments, the water distributor 110 further includes a connecting rope 140, one end of which is connected to the end of the fan blade 124 and the other end of which is connected to the housing 121.

[0032] The connecting rope 140 is used to stabilize the fan blade 124. During the rotation of the water distribution plate 120, the fan blade 124 may vibrate or sway due to centrifugal force or other external forces. Connecting the end of the fan blade 124 to the housing 121 via the connecting rope 140 effectively reduces the swaying of the fan blade 124, ensuring the stable operation of the water distributor 110. The connecting rope 140 also enhances the overall structural strength of the water distributor 110, making it more durable during long-term operation. The stable fan blade 124 and water distribution plate 120 ensure that cooling water is distributed more evenly onto the packing layer of the cooling tower, thereby improving cooling efficiency.

[0033] In some embodiments, the housing 121, the water distribution pipe 122, and the fan blade 124 are integrally formed.

[0034] One-piece molding refers to the simultaneous manufacture of the housing 121, water distribution pipe 122, and fan blade 124 using the same material and manufacturing process to form a single integrated structure. This one-piece molding reduces the number of connection points between components, thereby enhancing the overall structural strength and stability. Since all components are a single unit, there are no errors during the assembly process, which helps improve the accuracy and reliability of the water distributor 110. One-piece molding reduces malfunctions caused by loose or damaged connection points, thus lowering maintenance costs. The one-piece molding manufacturing process is generally more efficient than traditional modular manufacturing and assembly processes, shortening the production cycle.

[0035] In some embodiments, the end of the water distribution pipe 122 is provided with a water spraying structure 130.

[0036] The sprinkler structure 130 is located at the end of the water distribution pipe 122, typically at or near the end of the pipe. The sprinkler structure 130 includes a nozzle or a perforated plate. Nozzle: A nozzle is installed at the end of the water distribution pipe 122. The nozzle can be designed with different shapes and orifice diameters to achieve different spraying effects, such as atomizing nozzles or fan-shaped nozzles. Perforated plate: A perforated plate is provided at the end of the water distribution pipe 122, through which cooling water is evenly sprayed.

[0037] The side walls of the cooling tower and the packing material near them may not be in contact with the cooling water. The spray structure 130 can further and evenly spray the cooling water delivered by the water distribution pipe 122 onto these areas. Through the spray structure 130, the cooling water can form fine water droplets or mist, thereby increasing the contact area between water and air and improving cooling efficiency. The spray structure 130 can ensure a more uniform distribution of cooling water on the packing layer, thereby optimizing the overall cooling effect of the cooling tower.

[0038] Furthermore, the water spraying structure 130 includes a plurality of water spraying holes 131.

[0039] The spray holes 131 are used to further and evenly spray the cooling water delivered by the water distribution pipe 122 onto the packing layer of the cooling tower. Through multiple spray holes 131, the cooling water can form fine droplets or mist, thereby increasing the contact area between the water and air and improving cooling efficiency. The spray holes 131 ensure a more uniform distribution of cooling water on both sides of the cooling tower and in the packing material near the sides, thus optimizing the overall cooling effect of the cooling tower.

[0040] Furthermore, the surface of the water spraying structure 130 is an outwardly convex arc shape, and several water spraying holes 131 are arranged radially along the surface of the water spraying structure 130.

[0041] The curved surface ensures a more uniform distribution of cooling water on the packing layer, optimizing the cooling effect. Several spray holes 131 are arranged radially along the surface of the spray structure 130. This arrangement ensures that the cooling water is evenly distributed in all directions, further optimizing the cooling effect.

[0042] A second aspect of this utility model provides a cooling tower temperature control system, including a cooling tower according to the first aspect of the embodiment, a control device 500, and a temperature sensor 510 for detecting the outlet water temperature of the cooling tower body 100. The cooling tower body 100 also includes a fan 150. The control device 500 is used to control the operation of the fan 150. When the temperature sensor 510 detects that the outlet water temperature of the cooling tower body 100 is lower than a preset value, the control device 500 controls the fan 150 to stop running.

[0043] In actual use of cooling towers, when the cooling water temperature is too high and the fan blades 124 alone cannot lower the temperature to the preset value, a fan 150 is needed for further cooling. In this embodiment, to further reduce the energy consumption of the cooling tower, a control device 500 controls the operation of the fan 150, so that the fan 150 does not need to run 24 hours a day. For example, in some industrial production scenarios, if the cooling water temperature of the cooling tower is already relatively low, or during periods of low ambient temperature such as at night, the cooling efficiency of the cooling tower is already relatively high, and the fan 150 does not need to run. This method of controlling the operation of the fan 150 based on the actual water temperature significantly saves energy consumption and reduces the operating costs of enterprises compared to traditional cooling tower systems where the fan 150 runs continuously.

[0044] The control device 500 controls the operation of the fan 150 based on the cooling water temperature. The fan 150 increases airflow, thereby improving cooling efficiency. The preset value refers to the target cooling water temperature value pre-set by the user based on actual industrial production needs and the operating requirements of the cooling tower. The temperature sensor 510 monitors the water temperature at the cooling tower outlet in real time. When the temperature sensor 510 detects that the water temperature at the cooling tower outlet is lower than the preset value, the control device 500 controls the fan 150 to stop operating. This design avoids overcooling and saves energy. By controlling the operation of the fan 150 based on the water temperature, unnecessary energy waste can be avoided, thus achieving energy-saving effects. The control device 500 realizes automated control of the cooling tower, reducing manual intervention and improving system reliability and operating efficiency. The control device 500 includes a controller, which uses a microcontroller or a programmable logic controller (PLC). The controller receives signals from the temperature sensor 510 and performs logical judgments based on preset temperature thresholds, thereby controlling the operating status of the fan 150. The operation control of fan 150 can be achieved using a fan drive module. This module receives commands from the controller and drives the fan 150 to start or stop. The fan drive module includes relays, enabling precise control of the fan 150's speed and operating status based on signals from the controller. If the water temperature detected by temperature sensor 510 is higher than a preset value, the controller determines that the cooling tower needs enhanced heat dissipation and issues a command to the fan drive module to start fan 150 to increase airflow and improve cooling efficiency. If the water temperature detected by temperature sensor 510 is lower than the preset value, the controller determines that the cooling tower's heat dissipation is sufficient and issues a command to the fan drive module to stop fan 150 to conserve energy.

[0045] Furthermore, a cooling tower temperature control system also includes a circulating water tank 200 for holding cooling water, a circulating water pump 300, and a heat exchange device 400. The circulating water tank 200 is located below the cooling tower body 100, and the circulating water tank 200, the circulating water pump 300, the heat exchange device 400, and the cooling tower body 100 are connected in sequence.

[0046] The circulating water tank 200 stores cooling water, providing a water source for the entire circulating system. The circulating water pump 300 drives the cooling water to circulate within the system. The cooling water cools the heat exchange equipment 400.

[0047] The flow path of cooling water in the cooling tower temperature control system is as follows:

[0048] Cooling water is first stored in a circulating water tank 200. A circulating water pump 300 draws the cooling water from the circulating water tank 200 and delivers it to a heat exchanger 400. In the heat exchanger 400, the cooling water absorbs heat and its temperature rises. The heated cooling water enters a cooling tower and is evenly distributed onto the packing layer through the water distributor 110 and spray structure 130, where it exchanges heat with the air and its temperature decreases. After cooling, the cooling water flows back into the circulating water tank 200, completing one cycle.

[0049] By combining the cooling tower and heat exchanger 400, the temperature of the cooling water can be efficiently reduced to meet the cooling needs of industrial equipment. The control device 500 automatically controls the operation of the fan 150 based on the cooling water temperature, avoiding unnecessary energy waste and achieving energy savings. The circulating water tank 200 and circulating water pump 300 ensure a stable supply of cooling water, while the heat exchanger 400 ensures effective heat transfer, making the entire system stable and reliable. The control device 500 achieves automated control of the cooling tower, reducing manual intervention and improving system reliability and operating efficiency.

[0050] In some embodiments, the temperature sensor 510 is disposed on the outlet pipeline of the circulating water pump 300.

[0051] The terms and words used in the foregoing description and claims are not limited to their literal meaning, but are merely used by the applicant to enable a clear and consistent understanding of the present invention. Therefore, those skilled in the art should understand that the foregoing description of various embodiments of the present invention is for illustrative purposes only, and not intended to limit the present invention as defined by the appended claims and their equivalents.

Claims

1. A cooling tower, characterized in that, include: A cooling tower body (100) is provided with a water distributor (110) inside the cooling tower body (100). The water distributor (110) includes a rotatable water distribution plate (120). The water distribution plate (120) includes a shell (121), a water distribution pipe (122), and a fan blade (124). The fan blade (124) is spaced along the outer wall of the shell (121). The water distribution pipe (122) is provided with a plurality of water leakage holes (123) spaced apart. The water leakage holes (123) are inclined to the vertical direction. The water distribution pipe (122) is connected to the shell (121). The water distribution pipe (122) fits against the lower surface of the fan blade (124) and extends from the inside to the outside along the radial direction of the shell (121).

2. A cooling tower according to claim 1, characterized in that, The water distributor (110) also includes a connecting rope (140), one end of which is connected to the end of the fan blade (124), and the other end is connected to the housing (121).

3. A cooling tower according to claim 1, characterized in that, The housing (121), the water distribution pipe (122), and the fan blade (124) are integrally formed.

4. A cooling tower according to claim 1, characterized in that, The end of the water distribution pipe (122) is provided with a water spraying structure (130).

5. A cooling tower according to claim 4, characterized in that, The water spraying structure (130) includes a plurality of water spraying holes (131).

6. A cooling tower according to claim 5, characterized in that, The surface of the water spraying structure (130) is an outwardly convex arc shape, and a plurality of the water spraying holes (131) are arranged radially along the surface of the water spraying structure (130).

7. A cooling tower temperature control system, characterized in that, The cooling tower includes a cooling tower as described in any one of claims 1 to 6, a control device (500), and a temperature sensor (510) for detecting the outlet water temperature of the cooling tower body (100). The cooling tower body (100) further includes a fan (150). The control device (500) is used to control the operation of the fan (150). When the temperature sensor (510) detects that the outlet water temperature of the cooling tower body (100) is lower than a preset value, the control device (500) controls the fan (150) to stop operating.

8. A cooling tower temperature control system according to claim 7, characterized in that, It also includes a circulating water tank (200) for holding cooling water, a circulating water pump (300) and a heat exchange device (400), the circulating water tank (200) being located below the cooling tower body (100), and the circulating water tank (200), the circulating water pump (300), the heat exchange device (400) being sequentially connected to the cooling tower body (100).

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