Multi-stage decentralized auxiliary water distribution cooling tower

Abstract

This invention relates to the field of cooling tower technology, and more particularly to a multi-stage dispersed auxiliary water distribution cooling tower, comprising a cooling tower body, an auxiliary water distribution mechanism inside the cooling tower body, an annular water distribution branch, annular grooves for water flow in the annular water distribution branch, branch water distribution pipes connecting the annular grooves to the main pipe, a rotating water impeller rotatably mounted inside the annular water distribution branch, a side groove being formed at the contact point between the inner circumference of the annular water distribution branch and the rotating water impeller, and several water distribution cylinders fixed at the bottom of the rotating water impeller; this invention utilizes the spray water of the cooling tower itself to drive the rotating water impeller without the need for an additional power source device, the rotating water impeller drives the water distribution cylinders to rotate to perform secondary dispersion of the spray water, thereby optimizing water distribution and increasing the heat exchange area by secondary breakage of droplets, thus improving the heat exchange capacity of the entire tower. The device has strong overall structural reliability and can stably perform its function under various air humidity and temperature environments.

Description

Technical Field

[0001] This invention relates to the field of cooling tower technology, and more particularly to a multi-stage decentralized auxiliary water distribution cooling tower. Background Technology

[0002] A cooling tower is a device that cools water by utilizing the contact between air and water. Air enters the cooling tower from the bottom, and the spray components at the top spray out hot water. The air and hot water droplets exchange heat in the packing material, thus cooling the hot water. In large factories, cooling towers handle large volumes of water. Due to the collision of water droplets sprayed from the nozzles, the radius of the droplets continuously increases, thereby reducing the air-liquid contact area and affecting the overall heat exchange efficiency. Summary of the Invention

[0003] The technical problem to be solved by the present invention is: in order to overcome the problem that when the cooling tower processes a large amount of water, the water droplets sprayed from the nozzle will continuously increase in radius due to the collision of the water droplets, thereby reducing the gas-liquid contact area and affecting the overall heat exchange efficiency, a multi-stage decentralized auxiliary water distribution cooling tower is provided.

[0004] The technical solution adopted by the present invention to solve its technical problem is: a multi-stage decentralized auxiliary water distribution cooling tower, including a cooling tower body, a wind duct at the top of the cooling tower, a fan installed inside the wind duct, and a spray system connected to the main pipe and packing material located below the spray system inside the cooling tower body, and an auxiliary water distribution mechanism between the spray system and the packing material.

[0005] The auxiliary water distribution mechanism includes an annular water distribution channel fixed to the inner wall of the cooling tower body, which is connected by pins. The annular water distribution channel has an annular groove for water flow along its circumference. The annular groove provides a carrier space for water flow. A branch water distribution pipe is connected between the annular groove and the main pipe. A water pump is installed on the branch water distribution pipe.

[0006] The annular water distribution channel has a rotating water wheel inside. The inner circumference of the annular water distribution channel has several side grooves that communicate with the annular groove where they contact the water wheel. These side grooves are spaced apart and allow some of the water wheel to enter the annular groove. Water flows from the branch water distribution pipe into the annular groove and contacts the part of the water wheel entering the groove, providing tangential rotational power to drive the water wheel to rotate. Several water distribution cylinders are fixed to the bottom of the water wheel. Each water distribution cylinder includes a cylinder body and several blades located inside the cylinder body. These blades redistribute the water sprayed from the spray assembly. After entering the cylinder body, the spray water, due to the centrifugal force of rotation, continuously impacts the blades, thereby reducing the kinetic energy of the water, extending the heat exchange time, and breaking up droplets. Furthermore, when individual nozzles are clogged, water will enter the packing material after spraying from a nearby nozzle. The packing material below the clogged nozzle receives little or no spray water; the rotating water distribution cylinders act as a redistributor.

[0007] Part of the water flow is sprayed out from the sprinkler system, which performs primary dispersion of the water flow. The other part of the water flow enters the annular groove through the branch water distribution pipe, which impacts the part of the moving water wheel located in the annular groove, causing the moving water wheel to rotate. The water distribution cylinder rotates synchronously, and the water flowing into the water distribution cylinder is further dispersed by the centrifugal rotation force and the shearing impact force of the blades.

[0008] The above technical solution utilizes the spray water of the cooling tower itself to drive the rotating water wheel without the need for an additional power source. The rotating water wheel drives the water distribution cylinder to rotate, which disperses the spray water a second time. While optimizing the water distribution, it also increases the heat exchange area by breaking up the droplets a second time, thus improving the heat exchange capacity of the entire tower. The device has strong overall structural reliability and can stably perform its function under various air humidity and temperature environments.

[0009] Furthermore, the annular groove includes a through groove penetrating the bottom surface of the annular water distribution channel and a bottom-closed inlet groove. The outlet of the branch water distribution pipe is located in the inlet groove, and a branch mesh is installed at the bottom of the through groove. After providing rotational power, the water in the annular groove flows into the packing material below through the through groove. As the water impacts the outer wall of the moving water wheel and provides rotational shear stress, its kinetic energy decreases, thus reducing the speed of the falling water and increasing the time for heat exchange with the air. The branch mesh can also break the water droplets into smaller droplets.

[0010] Furthermore, the moving water wheel includes a wheel body, and a plurality of auxiliary cams protrude from the outer peripheral wall of the wheel body along its circumference. The water flow entering from the branch water distribution pipe impacts the outer wall of the moving water wheel and the auxiliary cams, driving the moving water wheel to rotate. A plurality of connecting rods are connected to the inner peripheral wall of the wheel body along its radial direction, and each connecting rod has a plurality of pins protruding upward for connecting to the water distribution cylinder.

[0011] Furthermore, several blades are connected by connecting posts. The top of each connecting post is welded with a buckle that engages with a locking post on a connecting rod. The buckle engages with the locking post to connect the moving water wheel to the water distribution cylinder. This connection method facilitates easy connection and disassembly, allowing for flexible adjustment of the number and position of the water distribution cylinders according to different usage requirements. A water distribution mesh is installed at the bottom of the cylinder, protruding downwards. When sprayed water enters the water distribution cylinder, the centrifugal force of the rotation causes the water moving within the cylinder to continuously impact the blades, thereby reducing the water's kinetic energy, extending heat exchange time, and breaking up droplets. The water then flows downwards to the mesh, where it further breaks the droplets into smaller ones. The mesh is designed with a downward-convex arc shape, which, compared to a flat mesh design, reduces eddies at the mesh edges and decreases airflow resistance.

[0012] Furthermore, the spray system includes several spaced spray pipes, each spray pipe is equipped with several nozzles along its length, and an auxiliary splashing platform is provided between two adjacent spray pipes. The auxiliary splashing platform is located below the spray pipe and is welded and fixed to the inner wall of the cooling tower body. The auxiliary splashing platform includes an upper splashing boss, and the top of the upper splashing boss is convex and arc-shaped.

[0013] The purpose of the cooling tower's nozzle arrangement is to ensure that every piece of packing material below can collect an equal amount of water for heat exchange. To ensure the nozzles cover the entire packing surface, the distance between nozzles cannot be too great. Adjacent nozzles typically have overlapping coverage areas. Within this area, droplets from the left nozzle will move to the right, and droplets from the right nozzle will move to the left. This causes droplets to collide and converge into larger droplets. Because of the small gas-liquid contact area, these large droplets are particularly detrimental to the overall heat exchange performance of the cooling tower. Therefore, an auxiliary splashing platform is designed. In this area, after the droplets collide and converge into larger droplets, their velocity direction changes from the original downward or downward left / right movement to a near-vertical movement. The droplets hitting the arc-shaped platform can then splash over a wider area.

[0014] Furthermore, the upper splashing protrusion is provided with a number of auxiliary water distribution clamps at intervals along its length. The auxiliary water distribution clamps include two clamps distributed on both sides of the upper splashing protrusion and a lower splashing protrusion fixed to the bottom of the upper splashing protrusion. Each clamp has flanges at both ends along the length of the upper splashing protrusion. The clamps and the two flanges form a flow channel, and the bottom of the flow channel bends upward to form an ascending section. A connecting section is provided between the two ascending sections, and an inclined groove is provided on the connecting section.

[0015] When large droplets travel vertically downwards and impact the upper splash boss, the droplets that splash further will fall directly to the bottom, while the droplets that splash less will fall into the auxiliary water distribution clamp. This prevents the lower packing material from being blocked by the upper splash boss from receiving water. The auxiliary water distribution clamp is installed using a pin hole and a tie rod.

[0016] When droplets that haven't splashed far enough fall into the auxiliary water distribution jacket, they will flow downwards along the flow channel. Depending on their splashing position, some droplets may land at the front of the auxiliary water distribution jacket and slide down. During their downward slide, these droplets collide and coalesce with gas droplets, forming larger droplets. Due to their greater inertia and kinetic energy, these larger droplets will impact the surface of the lower splashing platform after passing through the rising section at the bottom of the auxiliary water distribution jacket's flow channel. After the impact, the larger droplets will break down into smaller droplets, further reducing their kinetic energy and extending the subsequent gas-liquid heat exchange time. After the impact, the smaller droplets will flow out of the auxiliary water distribution jacket through the inclined groove below. When splashed droplets fall near the rear section of the auxiliary water distribution jacket's flow channel, because this rear section is essentially perpendicular to the droplet's falling direction, the droplets are easily splashed upon impact with the wall at this angle. The impact further reduces the droplet radius and kinetic energy of the droplets impacting the rear section of the flow channel. As the droplets are propelled forward by the incoming flow to complete the entire channel, those that cannot coalesce into larger droplets will not be able to impact the surface of the lower splashing platform due to insufficient inertia and kinetic energy. Instead, these droplets will fall directly downwards into the connecting section, where they will be distributed more evenly onto the packing surface below through several inclined channels, resulting in a wider water distribution range.

[0017] Furthermore, the annular water distribution channel is square, and the corners of the annular water distribution channel are rounded, thereby reducing the flow resistance of water at the corners.

[0018] The beneficial effects of this invention are: This invention utilizes the spray water of the cooling tower itself to drive the rotating water wheel without the need for an additional power source device. The rotating water wheel drives the water distribution cylinder to rotate and perform secondary dispersion of the spray water. While optimizing the water distribution, it also increases the heat exchange capacity of the entire tower by increasing the heat exchange area through the secondary breakage of droplets. The device has strong overall structural reliability and can stably perform its function under various air humidity and temperature environments. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

[0021] Figure 2This is a schematic diagram of the internal structure of the present invention;

[0022] Figure 3 This is a schematic diagram of a ring-shaped water distribution system.

[0023] Figure 4 This is a schematic diagram of the structure when the annular water distribution channel is combined with the moving water turbine.

[0024] Figure 5 This is a schematic diagram of the structure when the moving water turbine and the water distribution cylinder are in operation.

[0025] Figure 6 This is a schematic diagram of the water distribution cylinder.

[0026] Figure 7 A schematic diagram of the auxiliary splash platform;

[0027] Figure 8 for Figure 7 A magnified view of part A in the middle;

[0028] Figure 9 A schematic diagram of the auxiliary water distribution clamp;

[0029] In the picture:

[0030] 1. Cooling tower body; 2. Main pipe; 3. Spray system; 301. Spray pipe; 302. Spray nozzle; 4. Packing; 5. Annular water distribution channel; 501. Annular groove; 5011. Through groove; 5012. Inlet groove; 502. Side groove; 503. Branching wire mesh; 6. Moving water wheel; 601. Wheel body; 602. Auxiliary cam; 603. Connecting rod; 604. Locking column; 605. Support column; 7. Water distribution 701. Cylinder; 702. Blade; 703. Connecting column; 704. Buckle; 705. Water distribution mesh; 8. Branch water distribution pipe; 9. Auxiliary splash platform; 901. Upper splash boss; 902. Auxiliary water distribution clamp; 9021. Clamp body; 9022. Lower splash boss; 9023. Flanged edge; 9024. Flow channel; 9025. Rising section; 9026. Connecting section; 9027. Inclined groove. Detailed Implementation

[0031] The invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention in a schematic manner. Therefore, they only show the components relevant to the invention, and directions and references, such as up, down, left, right, etc., are only used to aid in the description of the features in the drawings. Therefore, the following specific embodiments are not intended to be restrictive, and the scope of the claimed subject matter is defined solely by the appended claims and their equivalents.

[0032] Example 1:

[0033] like Figures 1-7 As shown, the present invention is a multi-stage decentralized auxiliary water distribution cooling tower, including a cooling tower body 1, a wind duct at the top of the cooling tower, a fan installed inside the wind duct, and a spray system 3 connected to a main pipe 2 and a packing 4 located below the spray system 3 inside the cooling tower body 1, and an auxiliary water distribution mechanism is provided between the spray system 3 and the packing 4.

[0034] The auxiliary water distribution mechanism includes an annular water distribution channel 5 fixed to the inner wall of the cooling tower body 1, and the two are connected by pins. The annular water distribution channel 5 has an annular groove 501 along its circumference for water flow. The annular groove 501 provides a carrier space for water flow. The annular groove 501 is connected to the main pipe 2 by a branch water distribution pipe 8, and a water pump is installed on the branch water distribution pipe 8. The cross-section of the annular water distribution channel 5 can be, but is not limited to, square. In this embodiment, a square structure is adopted to facilitate fixing to the cooling tower body 1. The corners of the annular water distribution channel 5 are rounded, thereby reducing the flow resistance of water at the corners.

[0035] The annular groove 501 includes a through groove 5011 penetrating the bottom surface of the annular water distribution channel 5 and a bottom-closed inlet groove 5012. The outlet of the branch water distribution pipe 8 is located in the inlet groove 5012. A branch mesh 503 is installed at the bottom of the through groove 5011. After the water in the annular groove 501 has been provided with rotational power, it flows into the packing 4 below through the through groove 5011. As the water flows in, its kinetic energy will decrease after impacting the outer wall of the moving water wheel 6 and providing rotational shear stress, thus reducing the speed of the falling water and increasing the time for heat exchange with the air. In addition, the branch mesh 503 can break the water droplets into smaller droplets again.

[0036] A moving water wheel 6 is rotatably mounted inside the annular water distribution channel 5. A side groove 502, communicating with the annular groove 501, is formed on the inner circumferential wall of the annular water distribution channel 5 where it contacts the moving water wheel 6. In this embodiment, there are four side grooves 502 spaced apart. The height of the side grooves 502 is less than the height of the annular water distribution channel 5, and the side grooves 502 are located in the middle of the annular water distribution channel 5 along its height direction. The side grooves 502 allow part of the moving water wheel 6 to enter the annular groove 501, and water flows from the branch water distribution pipe 8 into the annular groove 501, contacting the part where the moving water wheel 6 enters the annular groove 501, providing tangential rotational power to drive the moving water wheel 6 to rotate.

[0037] The moving water wheel 6 includes a wheel body 601. A support column 605 is provided in the middle of the wheel body 601 to support the wheel body 601. The wheel body 601 is fitted on the top of the support column 605 and the two can rotate relative to each other. The bottom of the support column 605 is welded and fixed to the packing bracket. A number of auxiliary cams 602 protrude from the outer peripheral wall of the wheel body 601 along its circumference. In this embodiment, there are twelve auxiliary cams 602. The water flow entering from the branch water distribution pipe 8 impacts the outer wall of the moving water wheel 6 and the auxiliary cams 602, driving the moving water wheel 6 to rotate. A number of connecting rods 603 are connected to the inner peripheral wall of the wheel body 601 along its radial direction. Each connecting rod 603 has a number of locking pins 604 protruding upward for connecting the water distribution cylinder 7.

[0038] The bottom of the moving water wheel 6 is fixed with several water distribution cylinders 7. Each water distribution cylinder 7 includes a cylinder body 701 and several blades 702 located inside the cylinder body 701. The cross-sectional area of ​​the cylinder body 701 gradually decreases and then gradually increases, and its overall shape is streamlined so that the water flowing out can have a larger water distribution range. Several protrusions are provided on the blades 702 so that the water flowing through is further dispersed, and the water sprayed from the spray assembly is redistributed. Furthermore, when individual nozzles 302 are blocked, water will enter the packing 4 after being sprayed from the adjacent nozzles 302. The packing 4 below the blocked nozzles 302 will not receive spray water or will receive very little water. The rotating water distribution cylinder 7 can play a role in redistributing water.

[0039] A connecting post 703 is provided at the connection point of several blades 702. The top of the connecting post 703 is welded with a buckle 704 that engages with the locking post 604 on the connecting rod 603. The buckle 704 fits onto the locking post 604 to connect the moving water wheel 6 to the water distribution cylinder 7. The connection method between the buckle 704 and the locking post 604 is convenient for connection and disassembly, and the number and position of the water distribution cylinders 7 can be freely adjusted according to different usage requirements. A water distribution mesh 705 is installed at the bottom of the cylinder body 701, and the water distribution mesh 705 protrudes downward. The sprayed water enters the water distribution cylinder 7. Due to the centrifugal force of rotation, the water moving in the cylinder 701 will continuously hit the blades 702, thereby reducing the kinetic energy of the water, prolonging the heat exchange time, and breaking up the droplets. Then the water flows downward to the water distribution mesh 705. The presence of the mesh will cause the water droplets to break into smaller droplets again. The mesh is designed with a downward convex arc shape, which reduces eddies at the edge of the mesh and reduces air flow resistance compared to a flat mesh design.

[0040] The spray system 3 includes several spaced-apart water spray pipes 301, each with several nozzles 302 installed along its length. The nozzles 302 are arranged to ensure that each piece of packing material 4 below can collect an equal amount of water for heat exchange. To ensure that the nozzles 302 cover the surface of all packing material 4, the distance between them cannot be too far. Adjacent nozzles 302 typically have overlapping coverage areas. Within this area, droplets from the left nozzle 302 will move to the right, and droplets from the right nozzle 302 will move to the left. Therefore, droplets in this area will collide and converge into larger droplets. These larger droplets, due to their small gas-liquid contact area, are particularly detrimental to the overall heat exchange performance of the cooling tower. Therefore, an auxiliary splashing platform 9 is provided between two adjacent water spray pipes 301. The auxiliary splashing platform 9 is located below the side of the water spray pipe 301 and is welded and fixed to the inner wall of the cooling tower body 1. The auxiliary splashing platform 9 includes an upper splashing protrusion 901, and the top of the upper splashing protrusion 901 is arc-shaped. In this area, after the droplets collide and converge into larger droplets, their velocity direction changes from moving to the lower left or lower right to moving basically vertically. The droplets hitting the arc-shaped protrusion can splash over a wider range.

[0041] A plurality of auxiliary water distribution clips 902 are spaced apart along the length of the upper water splashing protrusion 901. Each auxiliary water distribution clip 902 includes two clips 9021 distributed on both sides of the upper water splashing protrusion 901 and a lower water splashing protrusion 9022 fixed to the bottom of the upper water splashing protrusion 901. The lower water splashing protrusion 9022 is a downwardly convex arc shape, which, together with the upwardly convex arc of the upper water splashing protrusion 901, provides an inclined droplet collision angle. Compared with a droplet that is impacted vertically, the droplet impacted by the inclined collision angle will have greater deformation and a greater internal shear force, making the droplet easier to break. Each clamp 9021 has flanges 9023 at both ends along the length of the upper splash boss 901. The clamp 9021 and the two flanges 9023 form a flow channel 9024, and the bottom of the flow channel 9024 bends upward to form a rising section 9025. A connecting section 9026 is provided between the two rising sections 9025, and an inclined groove 9027 is provided on the connecting section 9026.

[0042] When a large droplet strikes the upper splash boss 901 while moving vertically downwards, the droplets that splash further will fall directly to the bottom, while the droplets that splash less will fall into the auxiliary water distribution clamp 902. This prevents the lower packing material 4 from being blocked by the upper splash boss 901 from receiving water. The auxiliary water distribution clamp 902 is installed using a tie rod and pin holes.

[0043] When droplets that haven't splashed far enough fall into the auxiliary water distribution jacket 902, they will flow downwards along the flow channel 9024. Depending on their splashing position, the droplets may land at the front end of the flow channel 9024 and slide down. During their downward slide, these droplets collide and coalesce with gas droplets, forming larger droplets. Due to their greater inertia and kinetic energy, these larger droplets will impact the surface of the lower splash boss 9022 after passing through the rising section 9025 at the bottom of the flow channel 9024. After the impact, the larger droplets will break into smaller droplets, further reducing their kinetic energy and extending the subsequent gas-liquid heat exchange time. After the impact, the smaller droplets will flow out of the auxiliary water distribution jacket 902 through the inclined groove 9027 below. When the splashed droplets fall into the rear section of the flow channel 9024 near the auxiliary water distribution clamp 902, since the rear section of the flow channel 9024 is basically perpendicular to the direction of droplet fall, the droplets are easily splashed when they hit the wall at this angle. Due to the impact, the droplet radius and kinetic energy of the droplets hitting the rear section of the flow channel 9024 are further reduced. As the droplets are propelled forward by the incoming flow to complete the entire flow channel 9024, if they cannot converge into large droplets, they will not be able to hit the surface of the lower splash boss 9022 due to their inertia and insufficient kinetic energy. These droplets will fall directly downwards into the connecting section 9026, and then fall more evenly onto the surface of the packing 4 below through several inclined grooves 9027, with a wider water distribution range.

[0044] Working principle:

[0045] Part of the water flow in the main pipe 2 is sprayed out from the sprinkler system 3, and the nozzle 302 disperses the water flow in the first stage. The other part of the water flow enters the annular groove 501 through the branch water distribution pipe 8, which impacts the part of the moving water wheel 6 located in the annular groove 501, causing the moving water wheel 6 to rotate. The water distribution cylinder 7 rotates synchronously, and the water flowing into the water distribution cylinder 7 is dispersed in the second stage by the centrifugal rotation force and the shearing impact force of the blades 702.

[0046] Additionally, the water sprayed from two adjacent nozzles 302 collides and converges into large droplets. These droplets hit the upper splashing protrusion 901. The droplets that splash further will fall directly into the lower packing 4, while the droplets that splash not far enough will fall into the auxiliary water distribution clamp 902. They will collide in the flow channel 9024 formed by the auxiliary water distribution clamp 902. After the collision, the large droplets will break into smaller droplets, further reducing the kinetic energy of the droplets and extending the subsequent gas-liquid heat exchange time. Finally, they will flow out through the inclined groove 9027 at the bottom of the auxiliary water distribution clamp 902.

[0047] The above description, based on the preferred embodiments of the present invention, provides inspiration. Those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification but must be determined according to the claims.

Claims

1. A multi-stage decentralized auxiliary water distribution cooling tower, characterized in that: The cooling tower body (1) includes a spray system (3) connected to the main pipe (2) and a packing material (4) located below the spray system (3). An auxiliary water distribution mechanism is provided between the spray system (3) and the packing material (4). The auxiliary water distribution mechanism includes an annular water distribution channel (5) fixed to the inner wall of the cooling tower body (1). The annular water distribution channel (5) has an annular groove (501) for water supply flow along its circumference. A branch water distribution pipe (8) is connected between the annular groove (501) and the main pipe (2). A water pump is installed on the branch water distribution pipe (8). The annular water distribution channel (5) is rotatably installed with a moving water wheel (6). The part of the inner peripheral wall of the annular water distribution channel (5) that contacts the moving water wheel (6) is provided with a side groove (502) that communicates with the annular groove (501). There are several side grooves (502) and they are spaced apart. Several water distribution cylinders (7) are fixed at the bottom of the moving water wheel (6). The water distribution cylinder (7) includes a cylinder body (701) and several blades (702) located inside the cylinder body (701). Water flows from the branch water distribution pipe (8) into the annular groove (501) and comes into contact with the moving water wheel (6) that enters the annular groove (501) from the side groove (502), providing tangential rotational power to the moving water wheel (6) to drive it to rotate, thereby driving the water distribution cylinder (7) to rotate and disperse the spray water.

2. The multi-stage decentralized auxiliary water distribution cooling tower according to claim 1, characterized in that: The annular groove (501) includes a through groove (5011) that penetrates the bottom surface of the annular water distribution channel (5) and a bottom-closed inlet groove (5012). The outlet of the branch water distribution pipe (8) is located in the inlet groove (5012). A branch wire mesh (503) is installed at the bottom of the through groove (5011).

3. The multi-stage decentralized auxiliary water distribution cooling tower according to claim 1, characterized in that: The moving water wheel (6) includes a wheel body (601), and a number of auxiliary cams (602) protrude from the outer peripheral wall of the wheel body (601) along its circumferential direction. A number of connecting rods (603) are connected to the inner peripheral wall of the wheel body (601) along its radial direction. Each connecting rod (603) has a number of locking pins (604) protruding upward for connecting the water distribution cylinder (7).

4. The multi-stage decentralized auxiliary water distribution cooling tower according to claim 3, characterized in that: A connecting post (703) is provided at the connection part of several blades (702). The top of the connecting post (703) is provided with a buckle (704) that engages with the locking post (604) on the connecting rod (603). A water distribution wire mesh (705) is installed at the bottom of the cylinder (701) and the water distribution wire mesh (705) protrudes downward.

5. The multi-stage decentralized auxiliary water distribution cooling tower according to claim 1, characterized in that: The spray system (3) includes several spray pipes (301) spaced apart. Each spray pipe (301) is equipped with several nozzles (302) along its length. An auxiliary splashing platform (9) is provided between two adjacent spray pipes (301). The auxiliary splashing platform (9) includes an upper splashing boss (901), and the top of the upper splashing boss (901) is convex and arc-shaped.

6. The multi-stage decentralized auxiliary water distribution cooling tower according to claim 5, characterized in that: The upper splash boss (901) has a plurality of auxiliary water distribution clips (902) spaced apart along its length. The auxiliary water distribution clips (902) include two clip bodies (9021) distributed on both sides of the upper splash boss (901) and a lower splash boss (9022) fixed to the bottom of the upper splash boss (901). Each clip body (9021) has flanges (9023) at both ends along the length of the upper splash boss (901). The clip body (9021) and the two flanges (9023) form a flow channel (9024). The bottom of the flow channel (9024) bends upward to form a rising section (9025). A V-shaped connecting section (9026) is provided between the two rising sections (9025). A plurality of inclined grooves (9027) spaced apart are provided on the connecting section (9026).

7. The multi-stage decentralized auxiliary water distribution cooling tower according to claim 2, characterized in that: The annular water distribution channel (5) is square, and the corners of the annular water distribution channel (5) are rounded.

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