A ventilation device for a combined wet and dry cooling tower

Abstract

This utility model discloses a ventilation device for a combined wet and dry cooling tower, relating to the field of cooling tower technology. The utility model includes a connecting pipe, with a fan fixedly connected to the top outer wall of the connecting pipe. By incorporating a first spring and first baffle plates, when the gas flow stops, the first spring releases its elasticity to push the slider back to its original position. The reverse movement of the slider then drives the support rod to rotate in the opposite direction, pushing the hollow float back to its original position as well. This allows multiple first baffle plates to contact the hollow float, while rubber strips on the outer side of the first baffle plates block the gaps. This achieves the goal of using the elasticity of the first spring to push the slider back to its original position while simultaneously allowing multiple first baffle plates to rotate and block the pipe. This prevents the instantaneous reverse airflow from impacting fragile components such as fan blades and heat exchanger fins during system start-up, shutdown, or fluctuations in operating conditions, which could cause deformation or breakage of internal parts.

Description

Technical Field

[0001] This utility model belongs to the field of cooling tower technology, and in particular relates to a ventilation device for a combined dry and wet cooling tower. Background Technology

[0002] According to the published patent CN220670310U, a ventilation device for a combined dry and wet cooling tower is described. The blades are elongated and arranged in parallel. Each blade rotates between a ventilation position and a sealed position, parallel to its own length. Adjacent blades in the ventilation position have ventilation gaps. Multiple blades in the sealed position are positioned so that the two side openings of the fixed frame are located adjacent to the outer circumferential edge of the blades. This allows heat generated by the heating element to be quickly transferred to the edge of the blades, facilitating rapid melting of frost between blades and between the blades and the fixed frame, reducing energy consumption. Simultaneously, it prevents an overall increase in the surface temperature of the blades, reducing the amount of cold air entering the tower through the fixed frame and ensuring efficient heat exchange between the cold air and the circulating water in the cooling tower. However, the following shortcomings still exist: After completion, the above-mentioned equipment simply allows gas to flow normally by rotating blades. However, when the system starts up or stops or the operating conditions fluctuate, instantaneous reverse airflow may be generated and directly contact fragile components such as fan blades and heat exchanger fins, causing deformation or breakage of internal parts of the device. Utility Model Content

[0003] The purpose of this utility model is to provide a ventilation device for a combined dry and wet cooling tower. Through the blocking mechanism and the flow guiding mechanism, it solves the problem that when the system starts up or stops or the operating conditions fluctuate, instantaneous reverse airflow may impact and directly contact fragile components such as fan blades and heat exchanger fins, causing deformation or breakage of internal parts of the device.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is a ventilation device for a combined dry and wet cooling tower, including a connecting pipe, and a fan is fixedly connected to the top outer wall of the connecting pipe; The outer wall of the connecting pipe is provided with a blocking mechanism, which includes a connecting block. The outer wall of the connecting block is fixedly connected to the outer wall of the connecting pipe. A plurality of first positioning blocks are fixedly connected to the inner wall of the connecting block. A first blocking plate is rotatably connected to the outer wall of the plurality of first positioning blocks. A rubber strip is fixedly connected to the outer wall of the first blocking plate. A limit block is fixedly connected to the outer wall of the first blocking plate. A slider is slidably connected to the inner wall of the limit block. A support rod is rotatably connected to the outer wall of the slider. A hollow float is rotatably connected to the outer wall of the end of the support rod away from the slider. A first damper is fixedly connected to the outer wall of the slider. A first spring is fixedly connected to the outer wall of the first damper. The outer wall of the connecting pipe is provided with a flow guiding mechanism.

[0005] Furthermore, the outer wall of the first damper is fixedly connected to the inner wall of the limiting block, and the outer wall of the first spring is fixedly connected to the outer wall of the slider.

[0006] Furthermore, the flow guiding mechanism includes a protective box, the outer wall of which is fixedly connected to the outer wall of the connecting pipe, and a motor fixedly connected to the inner wall of the protective box. The output end of the motor is fixedly connected to a connecting shaft via a coupling, and the outer wall of the connecting shaft is rotatably connected to the inner wall of the protective box.

[0007] Furthermore, a positioning rod is fixedly connected to the outer wall of the connecting shaft, and a plurality of limiting grooves are provided on the inner wall of the positioning rod. A limiting rod is slidably connected to the inner wall of the plurality of limiting grooves, and a connecting rod is rotatably connected to the outer wall of the limiting rod.

[0008] Furthermore, a fixing rod is rotatably connected to the outer wall of the end of the connecting rod away from the limiting rod, a connecting plate is rotatably connected to the outer wall of the other end of the fixing rod, and a positioning shaft is rotatably connected to the outer wall of the connecting plate.

[0009] Furthermore, the outer wall of the positioning shaft is rotatably connected to the inner wall of the protective box, and a second barrier plate is fixedly connected to the outer wall of the end of the positioning shaft away from the connecting plate. The outer wall of the second barrier plate is slidably connected to the inner wall of the connecting pipe.

[0010] Furthermore, a second positioning block is rotatably connected to the outer wall of the end of the positioning rod away from the connecting shaft. The outer wall of the second positioning block is slidably connected to the inner wall of the protective box. A second damper is fixedly connected to the outer wall of the second positioning block.

[0011] Furthermore, the outer wall of the second damper is slidably connected to the inner wall of the protective box, and a second spring is fixedly connected to the outer wall of the second damper. The outer wall of the second spring is fixedly connected to the outer wall of the second positioning block.

[0012] This utility model has the following beneficial effects: 1. This utility model, by setting a first spring and a first blocking plate, allows the first spring to release its elasticity normally when the gas stops flowing, pushing the slider back to its original position. The reverse movement of the slider pushes the support rod to rotate in the opposite direction, pushing the hollow float back to its original position as well. This allows multiple first blocking plates to contact the hollow float, while the rubber strips on the outside of the first blocking plates block the gaps. This achieves the goal of pushing the slider back to its original position through the elasticity of the first spring while allowing multiple first blocking plates to rotate and block the pipe. This prevents the instantaneous reverse airflow from impacting fragile components such as fan blades and heat exchanger fins during system start-up, shutdown, or fluctuations in operating conditions, which could cause deformation or breakage of internal parts of the device. 2. This utility model incorporates a positioning rod and a second baffle plate. The rotation of the positioning rod moves the limiting rods on both sides, which in turn moves the connecting rod while simultaneously pulling the fixing rod. Since the other end of the fixing rod is fixed to the outermost side of the connecting plate, the movement of the fixing rod pulls the connecting plate, causing the positioning shaft to rotate inside the protective box. This, in turn, causes the second baffle plate to rotate inside the connecting pipe. This achieves the goal of simultaneously moving the limiting rods on both sides and rotating the second baffle plates on both sides of the pipe. This prevents the problem of temporary airflow turbulence inside the pipe caused by the need to activate two separate drive devices to control the blades on both sides when frequent airflow path switching is required, resulting in a time difference in response.

[0013] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the barrier structure of this utility model; Figure 3 This utility model Figure 2 Enlarged view of point A in the middle; Figure 4 This is a cross-sectional view of the flow guiding structure of this utility model; Figure 5 This utility model Figure 4 Enlarged view of section B in the middle.

[0016] The attached diagram lists the components represented by each number as follows: 1. Connecting pipe; 101. Fan; 2. Barrier mechanism; 201. Connecting block; 202. First positioning block; 203. First barrier plate; 204. Rubber strip; 205. Limiting block; 206. Slider; 207. Support rod; 208. Hollow float; 209. First damper; 210. First spring; 3. Guide mechanism; 301. Protective box; 302. Motor; 303. Connecting shaft; 304. Positioning rod; 305. Limiting groove; 306. Limiting rod; 307. Connecting rod; 308. Fixing rod; 309. Connecting plate; 310. Positioning shaft; 311. Second barrier plate; 312. Second positioning block; 313. Second damper; 314. Second spring. Detailed Implementation

[0017] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-5 As shown, this utility model is a ventilation device for a combined dry and wet cooling tower, including a connecting pipe 1. A fan 101 is fixedly connected to the top outer wall of the connecting pipe 1, and the fan 101 draws cold air from the outside into the interior of the connecting pipe 1. A blocking mechanism 2 is provided on the outer wall of the connecting pipe 1. The blocking mechanism 2 includes a connecting block 201. The outer wall of the connecting block 201 is fixedly connected to the outer wall of the connecting pipe 1. Several first positioning blocks 202 are fixedly connected to the inner wall of the connecting block 201. A first blocking plate 203 is rotatably connected to the outer wall of the several first positioning blocks 202. The first blocking plate 203 blocks the flow of gas. A rubber strip 204 is fixedly connected to the outer wall of the first blocking plate 203. By connecting the rubber strip 204 to the outside of the first blocking plate 203, air leakage between the gaps of the first blocking plates 203 is prevented. A limit block 205 is fixedly connected to the outer wall of the first blocking plate 203. A slider 206 is slidably connected to the inner wall of the limit block 205. A support rod 207 is rotatably connected to the outer wall of the slider 206. A hollow float 208 is rotatably connected to the outer wall of the end of the support rod 207 away from the slider 206. The hollow float 208 moves when propelled by gas, and the movement of the hollow float 208 pulls the support rod 207 to rotate around the hollow float 208, while pushing the slider 206 to move along the inside of the limiting block 205. The outer wall of the slider 206 is fixedly connected to a first damper 209, and the outer wall of the first damper 209 is fixedly connected to a first spring 210. The movement of the slider 206 compresses the first damper 209 and the first spring 210 inside the limiting block 205. The elasticity of the first damper 209 and the first spring 210 relieves the pressure generated when the slider 206 moves, and the elasticity of the first spring 210 pushes the slider 206 back to its original position in time. The outer wall of the connecting pipe 1 is provided with a flow guiding mechanism 3. The outer wall of the first damper 209 is fixedly connected to the inner wall of the limiting block 205, and the outer wall of the first spring 210 is fixedly connected to the outer wall of the slider 206.

[0019] The flow guiding mechanism 3 includes a protective box 301. The outer wall of the protective box 301 is fixedly connected to the outer wall of the connecting pipe 1. A motor 302 is fixedly connected to the inner wall of the protective box 301. The motor 302 is started, and the output end of the motor 302 is fixedly connected to a connecting shaft 303 via a coupling. The outer wall of the connecting shaft 303 is rotatably connected to the inner wall of the protective box 301. A positioning rod 304 is fixedly connected to the outer wall of the connecting shaft 303. The rotation of the connecting shaft 303 drives the positioning rod 304 to rotate. The inner wall of the positioning rod 304 has several limiting grooves 305. Limiting rods 306 are slidably connected to the inner walls of the limiting grooves 305. A connecting rod 307 is rotatably connected to the outer wall of the limiting rod 306. The rotation of the positioning rod 304 pushes the limiting rod 306 to move, while simultaneously driving the connecting rod 307 to move. The outer wall of the end of the connecting rod 307 away from the limiting rod 306 is rotatably connected to the limiting rod 306. A fixed rod 308 is connected to a connecting plate 309 rotatably connected to the outer wall of the other end of the fixed rod 308. The fixed rod 308 is pulled by the connecting rod 307, and the connection between the fixed rod 308 and the connecting plate 309 is located at the outermost part of the connecting plate 309. Thus, the movement of the fixed rod 308 drives the connecting plate 309 to rotate. A positioning shaft 310 is rotatably connected to the outer wall of the connecting plate 309. The outer wall of the positioning shaft 310 is rotatably connected to the inner wall of the protective box 301. A second barrier plate 311 is fixedly connected to the outer wall of the end of the positioning shaft 310 away from the connecting plate 309. The positioning shaft 310 restricts the position of the connecting plate 309, and the rotation of the connecting plate 309 drives the positioning shaft 310 to rotate, allowing the positioning shaft 310 to drive the second barrier plate 311 to rotate inside the connecting pipe 1. The outer wall of the second barrier plate 311 is slidably connected to the inner wall of the connecting pipe 1.

[0020] A second positioning block 312 is rotatably connected to the outer wall of the end of the positioning rod 304 away from the connecting shaft 303. The outer wall of the second positioning block 312 is slidably connected to the inner wall of the protective box 301. The rotation of the positioning rod 304 pushes the second positioning block 312 to move along the inside of the protective box 301. A second damper 313 is fixedly connected to the outer wall of the second positioning block 312. The outer wall of the second damper 313 is slidably connected to the inner wall of the protective box 301. The movement of the second positioning block 312 compresses the second damper 313, thereby relieving the pressure generated by the second positioning block 312. A second spring 314 is fixedly connected to the outer wall of the second damper 313. The outer wall of the second spring 314 is fixedly connected to the outer wall of the second positioning block 312. The second damper 313 is pre-set to automatically compress the outer second spring 314 when it is compressed, thereby increasing the ability of the second damper 313 to relieve pressure by utilizing the elasticity of the second spring 314.

[0021] One specific application of this embodiment is: When the equipment is needed, the fan 101 on the outside of the connecting pipe 1 is started. The rotation of the fan 101 draws cold air from the outside into the connecting pipe 1. The motor 302 inside the protective box 301 is also started as needed. The motor 302 drives the connecting shaft 303 to rotate, which in turn drives the positioning rod 304 to rotate. The rotation of the positioning rod 304 moves the limit rods 306 on both sides, causing the two limit rods 306 to move the connecting rod 307 and pull the fixing rod 308. Since the other end of the fixing rod 308 is fixed to the outermost part of the connecting plate 309, the movement of the fixing rod 308 pulls the connecting plate 309, causing the positioning shaft 310 to rotate inside the protective box 301. The positioning shaft 310 drives the second baffle plate 311 to rotate inside the connecting pipe 1. The movement of the fixed rod 308 pushes the connecting rod 307 to rotate around the outside of the limiting rod 306. When the fixed rod 308 rotates, the connecting rod 307 pushes the limiting rod 306 to move along the limiting groove 305 inside the positioning rod 304, thereby increasing the rotation range of the fixed rod 308 within the protective box 301. This prevents the connection between the fixed rod 308 and the connecting rod 307 from being blocked by the protective box 301 and unable to move. During the rotation of the positioning rod 304, it pushes the second positioning block 312 to move and pulls the second damper 313 to move inside the protective box 301. At the same time, the positioning... The rotation of rod 304 will compress the second damper 313. The second damper 313 is pre-set to automatically compress the outer second spring 314 when compressed, and the elasticity of the second spring 314 increases the ability of the second damper 313 to relieve pressure. On the other side, the second baffle plate 311 is pushed to rotate inside the connecting pipe 1 in the same way. Since the two second baffle plates 311 are pre-installed so that one second baffle plate 311 completely blocks one end of the connecting pipe 1 to prevent gas flow, and the other is horizontally installed inside the connecting pipe 1 so that gas can be discharged from the other end, when the two second baffle plates 311 rotate at the same time, one end of the connecting pipe 1 will be open and the other end will be blocked. When the water flows out from inside channel 1, it pushes the hollow float 208 to move. The movement of the hollow float 208 pushes multiple support rods 207 to rotate around the outside of the hollow float 208, while simultaneously driving the slider 206 to move along the inside of the limiting block 205 and compressing the first damper 209. The first damper 209 relieves the pressure generated by the movement of the slider 206, and at the same time, the first damper 209 automatically compresses the outer first spring 210. Through the movement of the slider 206 and the hollow float 208, and the rotation of the support rods 207, the first barrier plate 203 is pulled to rotate around the outside of the first positioning block 202. The remaining first barrier plates 203 rotate in the same way.When the outermost end of the connecting pipe 1 is opened after the multiple first barrier plates 203 rotate, gas can flow out normally. When the gas stops flowing, the first spring 210 can release its elasticity to push the slider 206 back to its original position. The reverse movement of the slider 206 pushes the support rod 207 to rotate in the opposite direction, pushing the hollow float 208 back to its original position as well. This allows the multiple first barrier plates 203 to contact the hollow float 208. At the same time, the rubber strips 204 on the outside of the first barrier plates 203 will block the gaps between the first barrier plates 203 and between the first barrier plate 203 and the hollow float 208, preventing external gas from flowing into the interior of the connecting pipe 1. The other end of the connecting pipe 1 is equipped with the same structure to prevent gas backflow.

[0022] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0023] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A ventilation device for a hybrid cooling tower, comprising a connecting duct (1), characterized in that: A fan (101) is fixedly connected to the top outer wall of the connecting pipe (1). The outer wall of the connecting pipe (1) is provided with a blocking mechanism (2). The blocking mechanism (2) includes a connecting block (201). The outer wall of the connecting block (201) is fixedly connected to the outer wall of the connecting pipe (1). A plurality of first positioning blocks (202) are fixedly connected to the inner wall of the connecting block (201). A first blocking plate (203) is rotatably connected to the outer wall of the plurality of first positioning blocks (202). A rubber strip (204) is fixedly connected to the outer wall of the first blocking plate (203). A limiting block (205) is connected, and a slider (206) is slidably connected to the inner wall of the limiting block (205). A support rod (207) is rotatably connected to the outer wall of the slider (206). A hollow float (208) is rotatably connected to the outer wall of the support rod (207) away from the slider (206). A first damper (209) is fixedly connected to the outer wall of the slider (206). A first spring (210) is fixedly connected to the outer wall of the first damper (209). A flow guiding mechanism (3) is provided on the outer wall of the connecting pipe (1).

2. The ventilation device of a hybrid wet-dry cooling tower according to claim 1, wherein The outer wall of the first damper (209) is fixedly connected to the inner wall of the limiting block (205), and the outer wall of the first spring (210) is fixedly connected to the outer wall of the slider (206).

3. The ventilation device of a hybrid cooling tower according to claim 2, wherein The flow guiding mechanism (3) includes a protective box (301), the outer wall of the protective box (301) is fixedly connected to the outer wall of the connecting pipe (1), the inner wall of the protective box (301) is fixedly connected to a motor (302), the output end of the motor (302) is fixedly connected to a connecting shaft (303) through a coupling, and the outer wall of the connecting shaft (303) is rotatably connected to the inner wall of the protective box (301).

4. The ventilation device of a hybrid cooling tower according to claim 3, wherein The outer wall of the connecting shaft (303) is fixedly connected to a positioning rod (304), and the inner wall of the positioning rod (304) is provided with a plurality of limiting grooves (305). The inner walls of the plurality of limiting grooves (305) are slidably connected to limiting rods (306), and the outer wall of the limiting rods (306) is rotatably connected to a connecting rod (307).

5. A ventilation device for a hybrid cooling tower according to claim 4, characterized in that The outer wall of the connecting rod (307) away from the limiting rod (306) is rotatably connected to a fixing rod (308), the outer wall of the other end of the fixing rod (308) is rotatably connected to a connecting plate (309), and the outer wall of the connecting plate (309) is rotatably connected to a positioning shaft (310).

6. A ventilation device for a hybrid cooling tower according to claim 5, wherein The outer wall of the positioning shaft (310) is rotatably connected to the inner wall of the protective box (301). A second barrier plate (311) is fixedly connected to the outer wall of the end of the positioning shaft (310) away from the connecting plate (309). The outer wall of the second barrier plate (311) is slidably connected to the inner wall of the connecting pipe (1).

7. A ventilation device for a hybrid cooling tower according to claim 6, characterized in that The outer wall of the end of the positioning rod (304) away from the connecting shaft (303) is rotatably connected to a second positioning block (312). The outer wall of the second positioning block (312) is slidably connected to the inner wall of the protective box (301). The outer wall of the second positioning block (312) is fixedly connected to a second damper (313).

8. The ventilation device of a hybrid cooling tower according to claim 7, wherein The outer wall of the second damper (313) is slidably connected to the inner wall of the protective box (301), and the outer wall of the second damper (313) is fixedly connected to the second spring (314), and the outer wall of the second spring (314) is fixedly connected to the outer wall of the second positioning block (312).

Images