Lateral dry-wet combined cooling tower
By adopting a side-mounted design and movable baffle in a dry and wet-dry joint cooling tower, the risk of icing and wind resistance problems of traditional cooling towers in low temperature environments is solved, and more efficient cooling effect and system safety are achieved.
Patent Information
- Application Number
- CN202411920722.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2025-03-28
AI Technical Summary
Traditional dry and wet combined cooling towers are prone to freezing when the ambient temperature is lower than 0°C, resulting in the risk of equipment damage. After the wet and cold section stops working, the heat exchange pipe and cooling water spray system occupy a large amount of space, forming a large wind resistance, affecting the cooling effect.
The side-mounted wet and dry cooling tower design is adopted, and the heat exchange tube is placed sideways to optimize the air path, reduce wind resistance, and close the wet and cold section when the ambient temperature is low, and the dry and cold section is relied on the dry and cold section for cooling. At the same time, a movable baffle and adjustable baffle blade are designed to adjust the airflow flow rate to ensure the dry environment of the dry and cold sections and the condensation effect of the wet and cold sections.
It effectively avoids the risk of equipment damage caused by icing in the wet and cold section, improves the safety and reliability of the system, optimizes the air path, improves the cooling effect, enhances the heat exchange area and heat transfer efficiency, and improves the overall performance of the cooling tower.
Smart Images
Figure CN119713907A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of industrial cooling equipment, and in particular to a side-mounted dry-wet combined cooling tower. Background Art
[0002] The dry-wet combined cooling tower is an efficient and water-saving heat exchange equipment that combines the advantages of dry cooling towers and wet cooling towers. This cooling tower is designed to make full use of the local low temperature environmental conditions, through the combination of dry and wet cooling, to achieve efficient cooling of circulating water, while significantly reducing water consumption.
[0003] Dry-wet combined cooling towers usually consist of a dry cooling section and a wet cooling section. The dry cooling section uses air convection for cooling, while the wet cooling section absorbs heat through water evaporation. In the dry cooling section, the circulating water is cooled by heat exchange with the air, while the wet cooling section further reduces the water temperature through water evaporation.
[0004] When the ambient temperature is below 0°C, both the cooling water stored in the wet cooling section of the dry-wet combined cooling tower and the flowing materials in the heat exchange tubes are prone to freezing, which will increase the volume of the liquid after freezing, increasing the risk of damaging the internal equipment of the dry-wet combined cooling tower. Therefore, when the ambient temperature drops to 5°C, the dry-wet combined cooling tower needs to stop spraying cooling water on the surface of the heat exchange tube, thereby stopping the wet cooling section from continuing to work, and only relying on the air cooling of the dry cooling section to achieve heat exchange cooling.
[0005] Although the traditional dry-wet combined cooling tower has achieved relatively ideal comprehensive cooling performance, when the wet cooling section stops working, the heat exchange tubes and cooling water spray system occupy a large amount of space in the cooling tower, forming a large wind resistance, which reduces the air volume and greatly limits the cooling effect. In addition, due to the narrow air duct, local hot spots are easily caused, affecting the stability and safety of the entire system. The existence of these problems has greatly restricted the promotion and development of dry-wet combined cooling towers in practical applications. Summary of the invention
[0006] In order to reduce the impact of heat exchange tubes on the air path and enhance the ventilation effect, the present application provides a side-mounted dry-wet combined cooling tower.
[0007] The side-mounted dry-wet combined cooling tower provided in this application adopts the following technical solution: A side-mounted dry-wet combined cooling tower comprises a tower body, which is divided into a dry cooling section and a wet cooling section from top to bottom, an exhaust fan is arranged on the top of the tower body, a water collecting box is arranged at the bottom of the tower body, air inlets are opened on the side walls of the dry cooling section and the wet cooling section, each air inlet is arranged with a shutter, and a movable baffle is arranged between the dry cooling section and the wet cooling section in the tower body, an air inlet channel is arranged at the air inlet of the dry cooling section, a heat exchange tube is arranged in the air inlet channel, a heat exchange coil is arranged in the tower body of the wet cooling section, a spray pipe is arranged between the heat exchange coil and the movable baffle, and a circulation component is arranged on the tower body connecting the water collecting box and the spray pipe, the circulation component comprises a water pump whose water inlet end is connected to the water collecting box and a water supply pipe connecting the water outlet end of the water pump and the water inlet end of the spray pipe.
[0008] By adopting the above technical solution, the heat exchange tubes of the dry cooling section of the cooling tower are placed sideways, which can optimize the wind path and reduce wind resistance, thereby improving the circulation effect of the airflow, reducing the motor energy consumption of the exhaust fan, and improving the cooling effect. Especially when the ambient temperature is low, by closing the wet cooling section and relying on the dry cooling section for cooling, the risk of equipment damage caused by icing in the wet cooling section can be avoided, thereby improving the safety and reliability of the system. At the same time, the heat exchange tubes set in the air inlet channel and the heat exchange coil design in the wet cooling section effectively match the space of the dry cooling section and the wet cooling section in the cooling tower, increase the heat exchange area, improve the heat transfer efficiency, and further improve the overall performance of the cooling tower.
[0009] Optionally, a fixed frame is provided on the inner wall of the tower body between the dry cooling section and the wet cooling section, and the movable baffle includes a driving shaft rotatably arranged on the fixed frame and baffle blades sleeved on the driving shaft. A number of driving shafts are evenly distributed along the length direction of the fixed frame, and the several driving shafts are arranged in parallel. When the several baffle blades are laid flat, they fully cover the fixed frame.
[0010] By adopting the above technical solution, when multiple baffle blades are laid flat, the fixed frame can be completely closed to prevent the airflow from flowing from the dry cooling section to the wet cooling section, thereby preventing the moisture in the wet cooling section from being blown into the dry cooling section, ensuring a dry environment in the dry cooling section. At the same time, when it is necessary to increase the air volume or adjust the cooling efficiency, the flow rate of the airflow can be adjusted by changing the angle of the baffle blades, thereby improving the overall ventilation effect of the cooling tower and enhancing the cooling performance. In addition, the adjustability of the baffle blades can also effectively reduce wind resistance, prevent the formation of local hot spots, and improve the stability and safety of the system.
[0011] Optionally, the driving shaft includes a rotatable main shaft and a slave shaft sleeve rotatably mounted on the main shaft, and a baffle blade is arranged on both axial sides of the driving shaft, one of the baffle blades is mounted on the slave shaft sleeve, and the other baffle blade is mounted on the shaft body of the main shaft extending from the slave shaft sleeve, and a driving component for driving the main shaft and the slave shaft sleeve to rotate in opposite directions is arranged on the fixed frame.
[0012] By adopting the above technical solution, when the ambient temperature drops to 5°C, the baffle blades need to be closed. The flattening of the baffle blades can completely cover the fixed frame to form a closed area, preventing cold air from entering the wet and cold section and avoiding the risk of freezing. When it is necessary to start the dry and wet cooling combination, the main shaft and the slave shaft sleeve are rotated in opposite directions through the driving assembly, so that the baffle blades form an inverted V-shaped condensation plate structure, and the steam sprayed by the wet and cold section gathers on the bottom wall of the baffle blades. After the steam gathers into water droplets, it slides down the inclined surface of the baffle blades and drips into the water collecting tank, which can improve the steam recovery effect, thereby achieving the effect of saving water resources.
[0013] Optionally, a cavity is opened in the fixed frame, and the ends on the same side of the main shaft and the slave shaft sleeve are both inserted into the cavity, and a limit seat is provided at the bottom of the cavity directly below the main shaft and the slave shaft sleeve, a main turntable is sleeved on the main shaft, and a driven disk is sleeved on the end of the slave shaft sleeve, and the main turntable and the driven disk are both located in the limit seat, and the drive assembly includes a gear ring and a transmission wheel, and one gear ring is provided on the opposite sides of the main turntable and the driven disk, and one transmission wheel is meshed with each gear ring, and the two transmission wheels are meshed with each other, and a positioning plate is provided in the limit seat for each transmission wheel, and the end of the rotating shaft of each transmission wheel is rotatably set on the corresponding positioning plate.
[0014] By adopting the above technical scheme, the main shaft is driven to rotate, so that the baffle blades mounted on the main shaft flip downward. Since the rotation of the main shaft drives the active disk to rotate, the transmission wheel meshing with the active disk rotates in the opposite direction, and then the transmission wheel drives the other transmission wheel meshing with it to rotate in the opposite direction. At this time, the other transmission wheel has the same rotation direction as the active disk. Since the other transmission wheel is meshed with the driven disk, the rotation direction of the driven disk is opposite to that of the other transmission wheel, so that the rotation directions of the driven disk and the active disk are opposite, so that the slave sleeve rotates in the opposite direction of the main shaft, which is finally reflected in the baffle blades mounted on the main shaft and the baffle blades mounted on the slave sleeve synchronously flipping downward in the opposite direction, so that the baffle blades are effectively retracted, and the clamping angle of the baffle blades after flipping is stably maintained, presenting an inverted V-shaped state, which plays the effect of a condenser in the wet and cold section. The main shaft and the slave shaft sleeve can rotate smoothly under the restriction of the limit seat and the fixed frame, and the main turntable and the driven disk can realize reverse rotation through the cooperation of the gear ring and the transmission wheel, ensuring that the baffle blades can be accurately laid or retracted, thereby effectively controlling the air flow between the dry cooling section and the wet cooling section and improving the cooling efficiency. In addition, the setting of the limit plate improves the stability of the transmission wheel, avoids mechanical failures caused by vibration, and enhances the reliability and service life of the system.
[0015] Optionally, the end of each main shaft extending out of the limit seat is sleeved with a synchronous wheel, and the multiple synchronous wheels are located in the cavity and are collectively sleeved with a synchronous belt. A servo motor is provided on the tower body to drive one of the main shafts to rotate.
[0016] By adopting the above technical solution, when the baffle blades need to adjust the angle, the servo motor drives one of the main shafts to rotate, and the main shaft drives the other main shafts to rotate synchronously through the synchronous belt, ensuring that all baffle blades can be opened or closed synchronously, thereby effectively controlling the air flow between the dry cooling section and the wet cooling section. This not only improves the ventilation efficiency of the cooling tower, but also enhances the stability and reliability of the system, avoiding the problem of increased wind resistance and reduced cooling effect caused by the asynchronous operation of individual baffle blades.
[0017] Optionally, when the movable baffle is in a closed state, the top wall height of the baffle blade extends beyond the top end of the drive shaft, and opposite side walls at the tops of two baffle blades on the same drive shaft are arranged to abut against each other.
[0018] By adopting the above technical solution, when the movable baffle is in a closed state, the tops of the two baffle blades on the same drive shaft are set against each other on the side walls, which can effectively prevent the leakage of airflow between the baffle blades, improve the isolation effect between the dry cooling section and the wet cooling section, and ensure the stable operation of the cooling tower under different working conditions. In addition, the baffle blades are mutually opposed after being laid flat, which can prevent the baffle blades from over-flipping and thus turning upward, which is convenient for controlling the cooling tower, so that the baffle blades have the effect of isolating the dry cooling section and the wet cooling section when laid flat, and have the function of a condenser when turned downward.
[0019] Optionally, each shutter includes a plurality of parallelly arranged shutter blades and a rotating shaft connecting the shutter blades and the side wall of the air inlet, a vertical cavity is opened in the tower body, a linkage rod is vertically slidably arranged on the vertical cavity, and a telescopic rod is connected between the ends of the plurality of rotating shafts on the same side and the linkage rod, one end of the telescopic rod is fixed on the rotating shaft, and the other end is hinged to the linkage rod.
[0020] By adopting the above technical solution, several louvers are hinged together by a linkage rod, and a parallelogram structure is formed between two adjacent louvers. When one of the several louvers rotates, the other louvers will also move synchronously, thereby achieving a linkage effect. The structure is simple and reliable.
[0021] Optionally, the side walls of two adjacent linkage rods are connected, and reinforcing ribs are provided at the connection points. An electric push cylinder is vertically provided in the tower body in communication with the vertical cavity, and the piston rod of the electric push cylinder extends out and is connected to the end of one of the linkage rods.
[0022] By adopting the above technical solution, the side walls of two adjacent linkage rods are connected, so that when the electric push cylinder drives one of the shutters to open or close, the other three shutters are opened and closed synchronously, thereby saving the number of driving power supplies and achieving energy-saving and high-efficiency effects.
[0023] In summary, the present application includes at least one of the following beneficial technical effects: 1. Placing the heat exchange tubes of the dry cooling section of the cooling tower sideways can optimize the air path and reduce wind resistance, thereby improving the circulation effect of the airflow, reducing the motor energy consumption of the exhaust fan, and improving the cooling effect. Especially when the ambient temperature is low, by closing the wet cooling section and relying on the dry cooling section for cooling, the risk of equipment damage caused by icing in the wet cooling section can be avoided, thereby improving the safety and reliability of the system. At the same time, the heat exchange tubes arranged in the air inlet channel and the heat exchange coil design in the wet cooling section effectively coordinate with the space of the dry cooling section and the wet cooling section in the cooling tower, thereby increasing the heat exchange area, improving the heat transfer efficiency, and further improving the overall performance of the cooling tower; 2. When multiple baffle blades are laid flat, they can completely close the fixed frame and prevent the airflow from flowing from the dry cooling section to the wet cooling section, thereby preventing the moisture in the wet cooling section from being blown into the dry cooling section and ensuring a dry environment in the dry cooling section. At the same time, when the air volume needs to be increased or the cooling efficiency needs to be adjusted, the airflow rate can be adjusted by changing the angle of the baffle blades, thereby improving the overall ventilation effect of the cooling tower and enhancing the cooling performance. In addition, the adjustability of the baffle blades can also effectively reduce wind resistance, prevent the formation of local hot spots, and improve the stability and safety of the system; 3. When the ambient temperature drops to 5°C, the baffle blades need to be closed. The flattening of the baffle blades can completely cover the fixed frame to form a closed area, preventing cold air from entering the wet and cold section and avoiding the risk of freezing. When it is necessary to start the dry and wet cooling combination, the main shaft and the slave shaft sleeve are driven to rotate in opposite directions through the drive assembly, so that the baffle blades form an inverted V-shaped condensation plate structure. The steam sprayed from the wet and cold section gathers on the bottom wall of the baffle blades. After the steam gathers into water droplets, it slides down the inclined surface of the baffle blades and drips into the water collecting tank, which can improve the steam recovery effect and thus achieve the effect of saving water resources. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.
[0025] Figure 2 It is a cross-sectional view of the overall structure of an embodiment of the present application.
[0026] Figure 3 It is a structural cross-sectional diagram of the embodiment of the present application when the dry cooling section is working independently.
[0027] Figure 4 It is a cross-sectional view showing the positional relationship among the rotating shaft, the telescopic rod and the linkage rod in the embodiment of the present application.
[0028] Figure 5 It is a schematic diagram showing the connection relationship between the electric push cylinder and the linkage rod in the embodiment of the present application.
[0029] Figure 6 It is a cross-sectional view showing the connection relationship between the main shaft, the slave shaft sleeve and the baffle blades in the embodiment of the present application.
[0030] Figure 7 It is a cross-sectional view showing the positional relationship between the servo motor and the tower body in the embodiment of the present application.
[0031] Description of reference numerals: 1. Tower body; 11. Dry cooling section; 12. Wet cooling section; 13. Air inlet; 131. Shutters; 1311. Shutter blades; 1312. Rotating shaft; 14. Air inlet channel; 15. Vertical cavity; 151. Linkage rod; 1511. Reinforcement ribs; 152. Telescopic rod; 153. Electric push cylinder; 16. Fixed frame; 161. Cavity; 162. Limit seat; 1621. Positioning plate; 17. Servo motor; 2. Exhaust fan; 3. , water collecting tank; 4, movable baffle; 41, driving shaft; 411, main shaft; 4111, main turntable; 4112, synchronous wheel; 4113, synchronous belt; 412, slave sleeve; 4121, driven disc; 42, baffle blades; 5, heat exchange tubes; 51, fins; 6, heat exchange coil; 7, spray pipe; 8, circulation assembly; 81, water pump; 82, water supply pipe; 9, driving assembly; 91, gear ring; 92, transmission wheel. DETAILED DESCRIPTION
[0032] The following is combined with Figure 1-7 This application is described in further detail.
[0033] The embodiment of the present application discloses a side-mounted dry-wet combined cooling tower.
[0034] Reference Figure 1 and Figure 2 A side-mounted dry-wet combined cooling tower includes a tower body 1. A plurality of tower bodies 1 can be connected and arranged in parallel according to actual use requirements. The tower body 1 is divided into a dry cooling section 11 and a wet cooling section 12 from top to bottom. An exhaust fan 2 is installed on the top of the tower body 1, and a water collecting tank 3 is fixedly installed at the bottom of the tower body 1. Air inlets 13 are opened on the side walls of the tower body 1 of the dry cooling section 11 and the wet cooling section 12, and shutters 131 are installed at the air inlets 13. A movable baffle 4 is arranged between the dry cooling section 11 and the wet cooling section 12 in the tower body 1. An air inlet channel 14 is fixedly arranged at the air inlet 13 of the dry cooling section 11, and a heat exchange tube 5 is fixedly arranged in the air inlet channel 14. The outer peripheral wall of the heat exchange tube 5 is integrally formed with a wound fin 51, and the heat exchange tube 5 is vertically distributed on the air inlet channel 14. A heat exchange coil 6 is arranged in an array in the tower body 1 of the wet cooling section 12 . A spray pipe 7 is arranged between the heat exchange coil 6 and the movable baffle 4 . A circulation component 8 is arranged on the tower body 1 to connect the water collecting tank 3 and the spray pipe 7 .
[0035] Reference Figure 1 and Figure 2When the dry cooling section 11 and the wet cooling section 12 are used together to cool the medium, the movable baffle 4 is in the open state, and the medium is input into the heat exchange coil 6 and circulated in the heat exchange coil 6. At the same time, the circulation component 8 transports the water inside the water collecting tank 3 into the spray pipe 7, sprays cooling water on the heat exchange coil 6, and the cooling water sprayed on the heat exchange coil 6 exchanges heat with the tube wall of the heat exchange coil 6, thereby taking away the surface heat of the heat exchange coil 6 and cooling the medium. While spraying water, the exhaust fan 2 on the top of the tower body 1 works, so that negative pressure is generated inside the tower body 1, and the external air enters the tower body 1 from the shutter 131 of the wet cooling section 12, which not only accelerates the heat dissipation on the surface of the heat exchange coil 6, but also makes the spray water exchange heat with the passing air, causing the water temperature to drop.
[0036] Reference Figure 1 and Figure 3 When the outdoor temperature drops to 5°C, the shutters 131, circulation components 8 and movable baffles 4 at the air inlet of the wet cooling section 12 are closed, and the cooling tower is only implemented by the dry cooling section 11. At this time, the medium is input into the heat exchange tubes 5 and circulates in the heat exchange tubes 5. The exhaust fan 2 on the top of the tower body 1 works to generate negative pressure inside the tower body 1, and the external cold air enters the tower body 1 from the shutters 131 of the dry cooling section 11. The cold air passes through the heat exchange tubes 5 in the air inlet channel 14. The circulation of cold air accelerates the heat dissipation on the surface of the heat exchange tubes 5, thereby cooling the medium.
[0037] Reference Figure 4 Each louver 131 includes a plurality of louvers 1311 and a rotating shaft 1312. In this embodiment, each louver 131 is equipped with five louvers 1311 as an example. The rotating shaft 1312 is coaxially fixed at both ends of the louver 1311 and is rotatably arranged on the side wall of the air inlet 13. A vertical cavity 15 is opened in the tower body 1 near the end of the rotating shaft 1312. The end of the rotating shaft 1312 extends into the vertical cavity 15, and a linkage rod 151 is vertically slidably arranged on the vertical cavity 15. The ends of the rotating shaft 1312 on the same side are connected with a telescopic rod 152 between the linkage rod 151. One end of each telescopic rod 152 is fixed on the rotating shaft 1312, and the other end is hinged on the linkage rod 151.
[0038] Reference Figure 4 and Figure 5 , the side walls of two adjacent linkage rods 151 are fixedly connected, and a reinforcing rib 1511 is fixedly arranged at the connection. A vertically arranged electric push cylinder 153 is embedded in the tower body 1. The electric push cylinder 153 is located at the top of one of the linkage rods 151, and the piston rod extends into the vertical cavity 15 and is fixedly connected to the end wall of the linkage rod 151. When the piston rod of the electric push cylinder 153 is extended, the shutters 131 around the tower body 1 are opened and closed synchronously.
[0039] Reference Figure 2 and Figure 6 The tower body 1 is provided with a fixed frame 16 on the inner wall between the dry cooling section 11 and the wet cooling section 12. The movable baffle 4 includes a driving shaft 41 and baffle blades 42. The driving shaft 41 is evenly distributed along the length direction of the fixed frame 16, and the driving shafts 41 are arranged in parallel. The driving shaft 41 includes a main shaft 411 and a secondary shaft sleeve 412. The main shaft 411 is rotatably arranged on the fixed frame 16, and the secondary shaft sleeve 412 is rotatably sleeved on the main shaft 411, and its length is half of the main shaft 411.
[0040] Reference Figure 2 and Figure 6 , a baffle blade 42 is provided on both axial sides of the driving shaft 41, one of the baffle blades 42 is fixedly sleeved on the slave shaft sleeve 412, and the other baffle blade 42 is fixedly sleeved on the shaft body of the main shaft 411 extending from the slave shaft sleeve 412. When the movable baffle 4 is in a closed state, the top wall height of the baffle blade 42 extends beyond the top of the driving shaft 41, and the opposite side walls of the tops of the two baffle blades 42 on the same driving shaft 41 are set in abutment with each other. A driving assembly 9 is provided on the fixed frame 16, which is used to drive the main shaft 411 and the slave shaft sleeve 412 to rotate in opposite directions to realize the opening and closing of the movable baffle 4.
[0041] Reference Figure 6 and Figure 7 A cavity 161 is provided in the fixed frame 16, and the ends of the main shaft 411 and the slave shaft sleeve 412 on the same side are both rotatably inserted into the cavity 161. A limit seat 162 is fixedly provided at the bottom of the cavity 161, directly below the main shaft 411 and the slave shaft sleeve 412. A main rotating disk 4111 is fixedly provided on the main shaft 411, and a driven disk 4121 is fixedly provided on the end of the slave shaft sleeve 412. The main rotating disk 4111 and the driven disk 4121 are both located in the limit seat 162. The driving assembly 9 includes a gear ring 91 and a transmission wheel 92. The gear ring 91 is integrally formed on the opposite side walls of the main rotating disk 4111 and the driven disk 4121. The transmission wheel 92 is meshed with one corresponding to each gear ring 91. A positioning plate 1621 is fixedly provided in the limit seat 162 for each transmission wheel 92. The end of the rotating shaft 1312 of each transmission wheel 92 is rotatably provided on the corresponding positioning plate 1621. The two transmission wheels 92 also mesh with each other. Reference Figure 6 and Figure 7 The end of each main shaft 411 extending out of the limit seat 162 is fixedly sleeved with a synchronous wheel 4112, and several synchronous wheels 4112 are located in the cavity 161 and are collectively sleeved with a synchronous belt 4113. A servo motor 17 is fixedly installed on the outer wall of the tower body 1, and the output shaft of the servo motor 17 rotates and passes through the side wall of the tower body 1 and is coaxially fixedly connected with one of the main shafts 411.
[0042] Reference Figure 1 and Figure 2 The circulation assembly 8 includes a water pump 81 and a water supply pipe 82. The water pump 81 is fixedly arranged on the outer wall of the tower body 1, and its water inlet end is connected to the water collecting tank 3. The water supply pipe 82 is located outside the tower body 1 and is fixedly connected to the water outlet end of the water pump 81 and the water inlet end of the spray pipe 7.
[0043] The implementation principle of a side-mounted dry-wet combined cooling tower in the embodiment of the present application is as follows: when the dry cooling section 11 and the wet cooling section 12 are used together to cool the medium, the movable baffle 4 is in an open state, and the medium is input into the heat exchange coil 6 and circulated in the heat exchange coil 6. At the same time, the water pump 81 sends the water pump 81 inside the water collecting tank 3 to the water supply pipe 82, and enters the spray pipe 7 from the water supply pipe 82, spraying cooling water on the heat exchange coil 6, and the cooling water sprayed on the heat exchange coil 6 exchanges heat with the pipe wall of the heat exchange coil 6, thereby taking away the surface heat of the heat exchange coil 6 and cooling the medium. While spraying water, the exhaust fan 2 at the top of the tower body 1 works, so that negative pressure is generated inside the tower body 1, and the external air enters the tower body 1 from the shutter 131 of the wet cooling section 12, which not only accelerates the heat dissipation on the surface of the heat exchange coil 6, but also makes the spray water exchange heat with the passing air, causing the water temperature to drop.
[0044] When the outdoor temperature drops to 5°C, the shutters 131, the water circulation system and the movable baffle 4 at the air inlet of the wet cooling section 12 are closed, and the cooling tower is cooled only by the dry cooling section 11. At this time, the medium is input into the heat exchange tubes 5 and circulates in the heat exchange tubes 5. The exhaust fan 2 at the top of the tower body 1 works to generate negative pressure inside the tower body 1, and the external cold air enters the tower body 1 through the shutters 131 of the dry cooling section 11. The cold air passes through the heat exchange tubes 5 in the air inlet channel 14, and the circulation of the cold air accelerates the dissipation of heat on the surface of the heat exchange tubes 5, thereby cooling the medium.
[0045] In the process of driving the movable baffle 4 to open and close, the servo motor 17 is started to work, and the servo motor 17 drives one of the main shafts 411 to rotate, and the main shaft 411 drives the other main shafts 411 to rotate synchronously through the synchronous belt 4113 to ensure that all the baffle blades 42 can be opened or closed synchronously. When the main shaft 411 rotates, the baffle blades 42 mounted on the main shaft 411 rotate synchronously to achieve downward flipping. Since the rotation of the main shaft 411 drives the active disk to rotate, the transmission wheel 92 meshing with the active disk rotates in the opposite direction. Then the transmission wheel 92 drives the other transmission wheel 92 meshing with it to rotate in the opposite direction. At this time, the other transmission wheel 92 has the same rotation direction as the active disk. Since the other transmission wheel 92 is meshed with the driven disk 4121, the rotation direction of the driven disk 4121 is opposite to the rotation direction of the other transmission wheel 92, so that the rotation directions of the driven disk 4121 and the active disk are opposite, so that the shaft sleeve 412 rotates in the opposite direction to the main shaft 411, which is finally reflected in the baffle blades 42 mounted on the main shaft 411 and the baffle blades 42 mounted on the shaft sleeve 412 synchronously flipping downward in the opposite direction, so that the baffle blades 42 are effectively retracted, so that the baffle blades 42 are in an inverted V-shaped state, which plays the role of a condenser in the wet cooling section 12. On the contrary, the movable baffle 4 can be closed, so that the dry cooling section 11 can work independently.
[0046] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A side-mounted dry-wet combined cooling tower, characterized in that , comprising a tower body (1), the tower body (1) being divided into a dry cooling section (11) and a wet cooling section (12) from top to bottom, an exhaust fan (2) being arranged at the top of the tower body (1), a water collecting box (3) being arranged at the bottom of the tower body (1), air inlets (13) being provided on the side walls of the tower body (1) of the dry cooling section (11) and the wet cooling section (12), each air inlet (13) being provided with a shutter (131), and a movable baffle (4) being provided between the dry cooling section (11) and the wet cooling section (12) in the tower body (1), the air inlet of the dry cooling section (11) An air inlet channel (14) is provided at the opening (13), a heat exchange tube array (5) is provided in the air inlet channel (14), a heat exchange coil (6) is provided in the tower body (1) of the wet cooling section (12), a spray pipe (7) is provided between the heat exchange coil (6) and the movable baffle (4), and a circulation component (8) is provided on the tower body (1) to connect the water collecting tank (3) and the spray pipe (7), the circulation component (8) comprising a water pump (81) whose water inlet end is connected to the water collecting tank (3) and a water supply pipe (82) connecting the water outlet end of the water pump (81) and the water inlet end of the spray pipe (7).
2. A side-mounted dry-wet combined cooling tower according to claim 1, characterized in that The tower body (1) is provided with a fixed frame (16) on the inner side wall between the dry cooling section (11) and the wet cooling section (12); the movable baffle (4) comprises a driving shaft (41) rotatably arranged on the fixed frame (16) and baffle blades (42) sleeved on the driving shaft (41); a plurality of driving shafts (41) are evenly distributed along the length direction of the fixed frame (16); the plurality of driving shafts (41) are arranged in parallel; when the plurality of baffle blades (42) are arranged flat, the fixed frame (16) is fully covered.
3. A side-mounted dry-wet combined cooling tower according to claim 2, characterized in that The driving shaft (41) comprises a main shaft (411) which is rotatably arranged and a secondary shaft sleeve (412) which is rotatably sleeved on the main shaft (411), and a baffle blade (42) is arranged on both axial sides of the driving shaft (41), one of the baffle blades (42) is sleeved on the secondary shaft sleeve (412), and the other baffle blade (42) is sleeved on the shaft body of the main shaft (411) extending out of the secondary shaft sleeve (412), and a driving component (9) which drives the main shaft (411) and the secondary shaft sleeve (412) to rotate in opposite directions is arranged on the fixed frame (16).
4. A side-mounted dry-wet combined cooling tower according to claim 3, characterized in that The fixed frame (16) is provided with a cavity (161), the ends of the main shaft (411) and the slave shaft sleeve (412) on the same side are both inserted into the cavity (161), and a limit seat (162) is provided at the bottom of the cavity (161) directly below the main shaft (411) and the slave shaft sleeve (412), a main rotating disk (4111) is sleeved on the main shaft (411), and a driven disk (4121) is sleeved on the end of the slave shaft sleeve (412), and the main rotating disk (4111) and the driven disk (4121) are both located in the limit seat (162), and the The driving assembly (9) comprises a ring gear (91) and a transmission wheel (92), wherein one ring gear (91) is disposed on opposite sides of the main rotating disk (4111) and the driven disk (4121), one transmission wheel (92) is meshed with each ring gear (91), and the two transmission wheels (92) are meshed with each other, a positioning plate (1621) is disposed in the limiting seat (162) corresponding to each transmission wheel (92), and the end of the rotating shaft (1312) of each transmission wheel (92) is rotatably disposed on the corresponding positioning plate (1621).
5. A side-mounted dry-wet combined cooling tower according to claim 4, characterized in that The end of each main shaft (411) extending out of the limit seat (162) is sleeved with a synchronous wheel (4112), and the plurality of synchronous wheels (4112) are located in the cavity (161) and are sleeved with a synchronous belt (4113) together. A servo motor (17) is provided on the tower body (1) to drive one of the main shafts (411) to rotate.
6. A side-mounted dry-wet combined cooling tower according to claim 3, characterized in that When the movable baffle (4) is in a closed state, the top wall height of the baffle blade (42) extends beyond the top end of the drive shaft (41), and the tops of the two baffle blades (42) on the same drive shaft (41) are arranged to abut against each other.
7. A side-mounted dry-wet combined cooling tower according to claim 1, characterized in that Each louver (131) comprises a plurality of louver blades (1311) arranged in parallel and a rotating shaft (1312) connecting the louver blades (1311) and the side wall of the air inlet (13); a vertical cavity (15) is provided in the tower body (1); a linkage rod (151) is provided on the vertical cavity (15) for vertical sliding; a plurality of ends of the rotating shaft (1312) on the same side are connected to a telescopic rod (152) between the linkage rod (151); one end of the telescopic rod (152) is fixed on the rotating shaft (1312), and the other end is hinged on the linkage rod (151).
8. A side-mounted dry-wet combined cooling tower according to claim 7, characterized in that The side walls of two adjacent linkage rods (151) are connected, and a reinforcing rib (1511) is provided at the connection. An electric push cylinder (153) is vertically provided in the tower body (1) and connected to the vertical cavity (15). The piston rod of the electric push cylinder (153) extends out and is connected to the end of one of the linkage rods (151).