Spraying device and cooling tower

Abstract

The utility model provides a spraying device and a cooling tower, relates to the technical field of spraying, and is used for solving the problems of low cooling efficiency and high power consumption of the cooling tower caused by scale accumulation in a spraying pipe in the cooling tower in the prior art. The spraying pipe comprises a vertically arranged main pipeline and a plurality of transverse pipes connected to a pipeline outlet of the main pipeline, each transverse pipe is provided with a plurality of spraying nozzles distributed in the radial direction of the transverse pipe, and each transverse pipe is further provided with at least one cutting position so that the transverse pipe can be divided into at least two sub-pipelines; the movable connecting pipe is detachably arranged on the periphery of the cutting position in a sleeving mode so as to be connected with the two sub-pipelines located at the two ends of the cutting position. The spray pipe is cut, and the movable connecting pipe is arranged at the cutting position, so that blockages can be quickly cleaned only by disassembling the movable connecting pipe, the problem of blockage of the spray pipe is timely and effectively solved, and the maintenance efficiency is high; and the problems of spray water reduction, low heat exchange efficiency and high power consumption caused by pipeline blockage are avoided.

Description

Technical Field

[0001] This application relates to the field of spray technology, and more particularly to a spray device and a cooling tower. Background Technology

[0002] Closed-loop cooling towers are a type of high-efficiency, water-saving cooling equipment. In closed-loop cooling towers, the circulating cooling water undergoes repeated heat exchange and evaporation, which leads to the rise of calcium and magnesium ions and the formation of scale. The scale cannot be sprayed out from the spray nozzles and will accumulate inside the spray pipes over a long period of use, causing blockages and reducing spraying efficiency. This results in a decrease in the heat exchange efficiency of the cooling tower and also increases the operating power consumption of the equipment in the cooling tower. Utility Model Content

[0003] In view of the above problems, this application provides a spraying device and a cooling tower to solve the problem of reduced spraying efficiency caused by scale buildup in the spray pipe in the related art.

[0004] To achieve the above objectives, the embodiments of this application provide the following technical solutions:

[0005] This application provides a spraying device, comprising: a spray pipe, the spray pipe including a vertically arranged main pipe and a plurality of horizontal pipes connected to the outlet of the main pipe, each horizontal pipe having a plurality of spray nozzles radially distributed along the horizontal pipe, and each horizontal pipe having at least one cutting position to divide the horizontal pipe into at least two sub-pipes; and a flexible connecting pipe, the flexible connecting pipe being detachably sleeved on the outer periphery of the cutting position to connect the two sub-pipes located at both ends of the cutting position.

[0006] In one embodiment of this application, the horizontal pipe has opposing head and tail ends along its radial direction, the head end being connected to the pipe outlet of the main pipe, and the at least one cut position being disposed near the tail end.

[0007] In one embodiment of this application, the horizontal tube has a first length along its radial direction, the distance between the cut position and the tail end is a first distance, and the ratio of the first distance to the first length is 1:10.

[0008] In one embodiment of this application, the flexible connector includes: a first connecting section, a transition connecting section, and a second connecting section; the two ends of the transition connecting section are respectively connected to the first connecting section and the second connecting section along its radial direction; a first sealing groove is provided on the inner peripheral wall of the first connecting section near the transition connecting section; a second sealing groove is provided on the inner peripheral wall of the second connecting section near the transition connecting section; a first sealant and a second sealant are respectively provided in the first sealing groove and the second sealing groove; of the two sub-pipes located at both ends of the cutting position, the end of one sub-pipe is located in the first connecting section and the outer peripheral wall of the sub-pipe abuts against the first sealant; the end of the other sub-pipe is located in the second connecting section and the outer peripheral wall of the sub-pipe abuts against the second sealant.

[0009] In one embodiment of this application, a third sealing groove is provided on the inner peripheral wall of the first connecting segment away from the transition connecting segment, and a third sealant is provided in the third sealing groove, with the outer peripheral wall of one of the sub-pipes abutting against the third sealant; and / or, a fourth sealing groove is provided on the inner peripheral wall of the second connecting segment away from the transition connecting segment, and a fourth sealant is provided in the fourth sealing groove, with the outer peripheral wall of the other sub-pipe abutting against the fourth sealant.

[0010] In one embodiment of this application, the first sealant and the second sealant are both rubber rings; the third sealant and the fourth sealant are both adhesives.

[0011] In one embodiment of this application, the tail end is provided with an opening, and a removable plug is provided at the opening.

[0012] In one embodiment of this application, the inner peripheral walls of the first connecting segment and the second connecting segment are provided with internal threads, and the two sub-pipes located at both ends of the cutting position are provided with external threads that match the internal threads.

[0013] In one embodiment of this application, a plurality of the spray nozzles are arranged at equal radial intervals along the horizontal pipe.

[0014] This application embodiment also provides a cooling tower, which includes the spraying device described above, and further includes: a fan, the fan being disposed above the spraying device; a water collection tray, the water collection tray being disposed below the spraying device, for collecting circulating cooling water; and a spray pump, the spray pump being disposed in the water collection tray, the water pump outlet of the spray pump being connected to the main pipeline of the spraying device, for pumping the circulating cooling water to the spraying device.

[0015] The spray device provided in this application has the following technical effects:

[0016] By cutting the horizontal spray pipes and installing flexible connecting pipes at the cut points, the problem of blockage in the horizontal spray pipes can be solved in a timely and effective manner, resulting in high maintenance efficiency. This avoids problems such as reduced spray water, low heat exchange efficiency, and power loss of the spray pump caused by scale blockage, ensuring stable operation of the equipment. Attached Figure Description

[0017] To more clearly illustrate the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a cooling tower provided in an embodiment of this application;

[0019] Figure 2 This is a schematic diagram of the structure of the horizontal pipe in the spray device provided in the embodiments of this application;

[0020] Figure 3 A schematic diagram of the structure of the flexible connecting pipe in the spray device provided in the embodiments of this application. Figure 1 ;

[0021] Figure 4 A schematic diagram of the structure of the flexible connecting pipe in the spray device provided in the embodiments of this application. Figure 2 ;

[0022] Figure 5 A schematic diagram of the structure of the flexible connecting pipe in the spray device provided in the embodiments of this application. Figure 3 .

[0023] Figure label:

[0024] 100-Tower body;

[0025] 200-fan;

[0026] 300-Water collection tray;

[0027] 301 - Spray pump; 302 - Liquid level sensor; 303 - Conductivity meter;

[0028] 401 - Main pipe; 402 - Horizontal pipe; 403 - Sprinkler nozzle; 404 - Fitted pipe; 405 - Plug;

[0029] 4021 - First sub-pipe; 4022 - Second sub-pipe; 4023 - Cutting position; 4041 - First connecting section; 4042 - Second connecting section; 4043 - Transition connecting section; 4044 - First sealing groove; 4045 - Second sealing groove; 4046 - Third sealing groove. Detailed Implementation

[0030] To make the above-mentioned objectives, features, and advantages of the embodiments of this application more apparent and understandable, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0031] refer to Figure 1 The spraying device provided in this application embodiment is applied to a closed-loop cooling tower.

[0032] The closed-loop cooling tower includes a tower body 100, a spray circulation system, and a fan 200. The fan 200 is located at the top of the tower body 100 and is used to enhance airflow within the tower body 100. The spray circulation system includes a water collection tray 300 and a spraying device. The water collection tray 300 is located at the bottom of the tower body 100 and is used to collect circulating cooling water. A spray pump 301 is installed inside the water collection tray 300. The circulating cooling water in the water collection tray 300 is drawn up to the top of the tower body 100 by the spray pump 301 and sprayed onto the outer surface of the coil through the spraying device. The circulating cooling water exchanges heat with the process fluids such as water, oil, and ethylene glycol solution inside the coil, thereby achieving cooling of the process fluids through indirect heat exchange.

[0033] The spraying device includes: spray pipes.

[0034] The spray pipe includes a vertically arranged main pipe 401 and multiple horizontal pipes 402 connected to the pipe outlet of the main pipe 401. Each horizontal pipe 402 is provided with multiple spray nozzles 403 distributed radially along the horizontal pipe 402.

[0035] The main pipe 401 has its inlet located at the bottom of the tower body 100 and its outlet extending to the top of the tower body 100. The inlet of the main pipe 401 is connected to the outlet of the spray pump 301. The spray pump 301 can pump the circulating cooling water in the water collection pan 300 to the main pipe 401 so that the circulating cooling water is lifted to the top of the tower body 100.

[0036] The outlet of the main pipe 401 is also equipped with a water collector. The outlet of the main pipe 401 is connected to multiple horizontal pipes 402 through the water collector, so that the circulating cooling water is distributed to the multiple horizontal pipes 402. The multiple horizontal pipes 402 are horizontal in direction ( Figure 1 The coils are spaced at equal intervals (perpendicular to the paper surface) to ensure that the circulating cooling water can be sprayed evenly on the outer surface of the coils.

[0037] refer to Figure 1 and Figure 2 Each horizontal pipe 402 is provided with at least one cutting position 4023 to divide the horizontal pipe 402 into at least two sub-pipes.

[0038] Cutting position 4023 refers to the position where the horizontal tube 402 is cut open.

[0039] The spray system also includes: a flexible connecting pipe 404.

[0040] The live pipe 404 is detachably fitted around the outer periphery of the cut position 4023 to connect the two sub-pipes located at both ends of the cut position 4023.

[0041] In other words, the 404 connecting pipe is used to connect the two cut sub-pipes to ensure that the circulating cooling water can flow in the two sub-pipes.

[0042] When an abnormality is found in the spraying or the power consumption of the spray pump 301 during the operation of the closed-loop cooling tower, stop the spray pump 301, then disassemble the live pipe 404 and clean the blockage in the horizontal pipe 402. After cleaning, install the live pipe 404 and turn on the spray pump 301 to continue observation.

[0043] By cutting the horizontal pipe 402 used for spraying and installing a flexible connecting pipe 404 at the cut point, the blockage problem of the horizontal pipe 402 can be solved in a timely and effective manner, resulting in high maintenance efficiency. This avoids problems such as reduced spray water, low heat exchange efficiency, and power loss of the spray pump 301 caused by scale blockage, ensuring stable operation of the equipment.

[0044] refer to Figure 1 and Figure 2 In this embodiment of the application, the horizontal pipe 402 has a head end and a tail end along its radial direction. The head end is connected to the pipe outlet of the main pipe 401, and at least one cut position 4023 is provided near the tail end.

[0045] When a cutting position 4023 is provided on the horizontal pipe 402 and the cutting position 4023 is also provided near the tail end, the horizontal pipe 402 is divided into two sub-pipes: a first sub-pipe 4021 and a second sub-pipe 4022. The pipe length of the first sub-pipe 4021 is greater than the pipe length of the second sub-pipe 4022, and the second sub-pipe 4022 is located at the tail end of the horizontal pipe 402.

[0046] Due to the flow of circulating cooling water, scale is usually flushed to the end of the horizontal pipe 402. After long-term use, a large amount of scale will accumulate at the end of the horizontal pipe 402. Therefore, a cutting position 4023 is set at the end of the horizontal pipe 402 to facilitate quick and effective cleaning of the blockage inside the horizontal pipe 402.

[0047] In this embodiment of the application, the horizontal tube 402 has a first length along its radial direction, the distance between the cutting position 4023 and the tail end is a first distance, and the ratio of the first distance to the first length is 1:10.

[0048] In other words, the length ratio of the second sub-pipe 4022 to the first sub-pipe 4021 is 1:10.

[0049] refer to Figure 3 In this embodiment of the application, the flexible connector 404 includes: a first connecting segment 4041, a transition connecting segment 4043, and a second connecting segment 4042.

[0050] The radial direction of the transition connecting section 4043 is parallel to the radial direction of the horizontal tube 402. The two ends of the transition connecting section 4043 along its radial direction are connected to the first connecting section 4041 and the second connecting section 4042 respectively. The diameters of the first connecting section 4041 and the second connecting section 4042 are the same, and the diameters of the first connecting section 4041 and the second connecting section 4042 are larger than the diameter of the transition connecting section 4043, so as to form two opposing first abutment surfaces and second abutment surfaces in the live tube 404.

[0051] Of the two sub-pipes located at both ends of the cutting position 4023, the end of one sub-pipe is located within the first connecting section 4041, and the end face of the sub-pipe abuts against the first abutting platform; the end of the other sub-pipe is located within the second connecting section 4042, and the end face of the sub-pipe abuts against the second abutting platform.

[0052] refer to Figure 4 In this embodiment of the application, the inner peripheral walls of the first connecting segment 4041 and the second connecting segment 4042 are provided with internal threads, and the two sub-pipes located at both ends of the cutting position 4023 are provided with external threads that match the internal threads, so that the first connecting segment 4041 and the second connecting segment 4042 are threadedly connected to the two sub-pipes respectively, thereby improving the connection stability and connection strength while ensuring the sealing effect.

[0053] refer to Figure 5 In this embodiment of the application, a first sealing groove 4044 is provided on the inner peripheral wall of the first connecting segment 4041 near the transition connecting segment 4043, and a second sealing groove 4045 is provided on the inner peripheral wall of the second connecting segment 4042 near the transition connecting segment 4043. A first sealant and a second sealant are respectively provided in the first sealing groove 4044 and the second sealing groove 4045.

[0054] Of the two sub-pipes located at both ends of the cutting position 4023, the end of one sub-pipe is located within the first connecting section 4041 and the outer peripheral wall of the sub-pipe abuts against the first sealant; the end of the other sub-pipe is located within the second connecting section 4042 and the outer peripheral wall of the sub-pipe abuts against the second sealant.

[0055] The first and second sealants are used to seal the first connecting section 4041, the second connecting section 4042, and the two sub-pipes to prevent circulating cooling water from leaking from the cut-off position 4023.

[0056] Continue to refer to Figure 5 In this embodiment of the application, a third sealing groove 4046 is provided on the inner peripheral wall of the first connecting segment 4041 away from the transition connecting segment 4043, and a third sealant is provided in the third sealing groove 4046, with the outer peripheral wall of one sub-pipe abutting against the third sealant; and / or, a fourth sealing groove is provided on the inner peripheral wall of the second connecting segment 4042 away from the transition connecting segment 4043, and a fourth sealant is provided in the fourth sealing groove, with the outer peripheral wall of another sub-pipe abutting against the fourth sealant.

[0057] Further seal the first connecting section 4041, the second connecting section 4042, and the two sub-pipes to improve the sealing effect and prevent circulating cooling water from leaking from the cut-off position 4023.

[0058] In this embodiment, the first sealant, the second sealant, the third sealant, and the fourth sealant can be rubber rings or adhesives.

[0059] refer to Figure 1 , Figure 2 and Figure 5 In a preferred embodiment of this application, each horizontal tube 402 is provided with a cutting position 4023, and the cutting position 4023 is located near the tail end of the horizontal tube 402. The horizontal tube 402 is divided into two sub-tubes: a first sub-tube 4021 and a second sub-tube 4022, with the second sub-tube 4022 located at the tail end of the horizontal tube 402.

[0060] The inner circumferential walls of the first connecting section 4041 and the second connecting section 4042 of the union pipe 404 are both provided with internal threads. The two sub-pipes located at both ends of the cut position 4023 are connected to the union pipe 404 by threads, and the threaded connection is the first layer of sealing.

[0061] A first sealing groove 4044 is provided on the inner peripheral wall of the first connecting section 4041 near the transition connecting section 4043, and a second sealing groove 4045 is provided on the inner peripheral wall of the second connecting section 4042 near the transition connecting section 4043. A first sealant and a second sealant are respectively provided in the first sealing groove 4044 and the second sealing groove 4045. Both the first sealant and the second sealant are rubber rings, thus achieving a second layer of sealing.

[0062] Simultaneously, a third sealing groove 4046 is provided on the inner peripheral wall of the first connecting section 4041 away from the transition connecting section 4043. A third sealant is provided in the third sealing groove 4046, and the outer peripheral wall of the second sub-pipe 4022 abuts against the third sealant, which is a rubber ring. At the same time, adhesive is applied to the contact gap between the first sub-pipe 4021 and the second connecting section 4042 away from the transition connecting section 4043 to achieve a third layer of sealing.

[0063] When it is necessary to clear the blockage in the horizontal pipe 402, stop the spray pump 301 and disassemble the second sub-pipe 4022 located at the tail end and the first connecting section 4041. There is no need to disassemble the first sub-pipe 4021.

[0064] In another preferred embodiment of this application, each horizontal tube 402 is provided with a plurality of cutting positions 4023, and the third layer of seal is: a third sealant and a fourth sealant, and the third sealant and the fourth sealant can be rubber rings.

[0065] refer to Figure 1 and Figure 2 In this embodiment of the application, an opening is provided at the tail end, and a detachable plug 405 is provided at the opening.

[0066] When it is necessary to clear the blockage in the end of the horizontal pipe 402, stop the spray pump 301 and remove the plug 405.

[0067] refer to Figure 1 In this embodiment of the application, multiple spray nozzles 403 are arranged at equal distances along the radial direction of the horizontal pipe 402, making the spraying more uniform.

[0068] In this embodiment, the flexible conduit 404 can be made of rigid polyvinyl chloride material.

[0069] This application embodiment also provides a cooling tower, which includes the spraying device described above, and further includes: a tower body 100, a fan 200, a water collection tray 300 and a spray pump 301. The fan 200 is disposed at the top of the tower body 100 and above the spraying device; the water collection tray 300 is disposed at the bottom of the tower body 100 and below the spraying device, and is used to collect circulating cooling water.

[0070] The spray pump 301 is installed in the water collection pan 300. The pump outlet of the spray pump 301 is connected to the main pipe 401 of the spray device. The spray pump 301 is used to pump the circulating cooling water to the spray device and complete the spraying through multiple horizontal pipes 402 of the spray device.

[0071] Continue to refer to Figure 1 The cooling tower also includes: water supply pipes, liquid level sensor 302, and control system.

[0072] A solenoid valve is installed on the water supply pipe. The water supply pipe extends from the side wall of the tower body 100 to the water collection tray 300. When the water level in the water collection tray 300 is low, it is used to replenish water into the water collection tray 300.

[0073] The control system is electrically connected to the level sensor 302 and the solenoid valve on the water supply pipeline.

[0074] The liquid level sensor 302 is installed in the water collection pan 300 to detect whether the water level in the water collection pan 300 is lower than the preset value. When it detects that the water level is lower than the preset value, it will issue an alarm signal and feed the alarm signal back to the control system. The control system will control the solenoid valve on the water supply pipe to open and supply water. When it detects that the water level is higher than the preset value, it will issue a signal that the cooling water is sufficient and feed the signal back to the control system. The control system will control the solenoid valve on the water supply pipe to close and stop supplying water.

[0075] It should be noted that when the water level in the water collection pan 300 is lower than the preset value, the control system will control the spray pump 301 to stop to prevent the spray pump 301 from running dry.

[0076] The cooling tower also includes: conductivity meter 303.

[0077] The conductivity meter 303 is installed in the water collection pan 300. The conductivity meter 303 is used to detect the water quality of the circulating cooling water in the water collection pan 300. An abnormal conductivity indicates that the current water quality is prone to scaling. It is necessary to open the drain valve to drain the water and start water replenishment at the same time to prevent scaling of the equipment.

[0078] In summary, this application provides a spraying device and a cooling tower. The spraying device includes a spray pipe and a connecting pipe 404. The spray pipe includes a vertically arranged main pipe 401 and multiple horizontal pipes 402 connected to the outlet of the main pipe 401. Each horizontal pipe 402 is provided with multiple spray nozzles 403 radially distributed along the horizontal pipe 402. Each horizontal pipe 402 is provided with at least one cutting position 4023 to divide the horizontal pipe 402 into at least two sub-pipes. The connecting pipe 404 is detachably sleeved on the outer periphery of the cutting position 4023 to connect the two sub-pipes located at both ends of the cutting position 4023. By cutting the horizontal pipe 402 used for spraying and providing the connecting pipe 404 at the cutting point, the problem of blockage of the horizontal pipe 402 can be solved in a timely and effective manner, resulting in high maintenance efficiency. It avoids the problems of reduced spray water, low heat exchange efficiency, and power loss of the spray pump 301 caused by scale blockage, ensuring stable operation of the equipment.

[0079] The various embodiments or embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other.

[0080] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0081] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0082] It should be readily understood that the terms “on,” “above,” and “on top of” in this disclosure should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on top of something” but also “on top of something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0083] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0084] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A spray device, characterized in that include: The spray pipe includes a vertically arranged main pipe and multiple horizontal pipes connected to the outlet of the main pipe. Each horizontal pipe is provided with multiple spray nozzles distributed radially along the horizontal pipe, and each horizontal pipe is provided with at least one cutting position to divide the horizontal pipe into at least two sub-pipes. A flexible connector is detachably fitted around the outer periphery of the cut position to connect the two sub-pipes located at both ends of the cut position.

2. The spraying device according to claim 1, characterized in that, The horizontal pipe has opposing head and tail ends along its radial direction, the head end being connected to the pipe outlet of the main pipe, and the at least one cut position being located near the tail end.

3. The spraying device according to claim 2, characterized in that, The horizontal tube has a first length along its radial direction, the distance between the cut position and the tail end is a first distance, and the ratio of the first distance to the first length is 1:

10.

4. The spray device of claim 1, wherein The flexible connector includes: a first connecting section, a transition connecting section, and a second connecting section; The transition connecting section is connected to the first connecting section and the second connecting section at both ends along its radial direction. The first connecting section is provided with a first sealing groove on its inner peripheral wall near the transition connecting section, and the second connecting section is provided with a second sealing groove on its inner peripheral wall near the transition connecting section. The first sealing groove and the second sealing groove are respectively provided with a first sealant and a second sealant. Of the two sub-pipes located at both ends of the cutting position, the end of one sub-pipe is disposed within the first connecting section and the outer peripheral wall of the sub-pipe abuts against the first sealant, and the end of the other sub-pipe is disposed within the second connecting section and the outer peripheral wall of the sub-pipe abuts against the second sealant.

5. The spraying device according to claim 4, characterized in that, A third sealing groove is provided on the inner peripheral wall of the first connecting section away from the transition connecting section, and a third sealant is provided in the third sealing groove; the outer peripheral wall of one of the sub-pipes abuts against the third sealant; and / or, The second connecting section has a fourth sealing groove on its inner peripheral wall away from the transition connecting section. The fourth sealing groove contains a fourth sealant, and the outer peripheral wall of the other sub-pipe abuts against the fourth sealant.

6. The spraying device according to claim 5, characterized in that, Both the first sealant and the second sealant are rubber rings; Both the third sealant and the fourth sealant are adhesive adhesives.

7. The spraying device according to claim 2, characterized in that, The tail end is provided with an opening, and a removable plug is provided at the opening.

8. The spraying device according to claim 5, characterized in that, The inner circumferential walls of the first connecting section and the second connecting section are provided with internal threads, and the two sub-pipes located at both ends of the cutting position are provided with external threads that match the internal threads.

9. The spraying device according to claim 1, characterized in that, The multiple spray nozzles are arranged at equal radial intervals along the horizontal pipe.

10. A cooling tower characterized by, The spray device of any one of claims 1-9, further comprising: a fan disposed above the spray device; a water collecting pan disposed below the spray device for collecting the circulating cooling water; a spray pump disposed in the water collecting pan, a water pump outlet of the spray pump being in communication with a main pipe of the spray device for pumping the circulating cooling water to the spray device.

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