Cooling tower

Abstract

This application provides a cooling tower, relating to the field of spray cooling technology, to solve the problem of low cooling efficiency and high power consumption caused by scale buildup in the edge area of ​​the packing layer in related technologies. The cooling tower includes: a tower body and a spray device, a heat exchange device, a packing layer, and an auxiliary spray pipe disposed within the tower body; the spray device is disposed at the top of the tower body, the heat exchange device is disposed below the spray device, and the packing layer is disposed below the heat exchange device. The circulating cooling water sprayed by the spray device exchanges heat with the outer surface of the heat exchange device, and the packing layer is used to reduce the temperature of the circulating cooling water after heat exchange; the auxiliary spray pipe is disposed between the packing layer and the inner wall of the tower body, and is connected to the spray device through a connecting pipe to spray the circulating cooling water to the edge area between the packing layer and the inner wall of the tower body, spraying and flushing the edge area to prevent scale buildup, thereby improving cooling efficiency and achieving energy saving.

Description

Technical Field

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

[0002] A closed-loop cooling tower is a high-efficiency, water-saving cooling device. The packing layer in a closed-loop cooling tower is used to disperse the circulating cooling water after heat exchange into a water film or droplets, thereby accelerating the evaporation and heat dissipation of the circulating cooling water, so that it can exchange heat more efficiently in the next cycle.

[0003] In closed-loop cooling towers, the circulating cooling water undergoes repeated heat exchange and evaporation, leading to the rise of calcium and magnesium ions and the formation of scale. Scale buildup is particularly prevalent in the edge area between the packing layer and the inner wall of the cooling tower. Scale accumulation reduces spraying efficiency, resulting in lower heat exchange efficiency of the cooling tower. It also increases the operating power consumption of the equipment in the cooling tower. Utility Model Content

[0004] In view of the above problems, this application provides a cooling tower to solve the problem of low cooling efficiency and high power consumption caused by scale buildup in the edge area of ​​the packing layer in the related art.

[0005] To achieve the above objectives, the embodiments of this application provide the following technical solutions:

[0006] This application provides a cooling tower, comprising: a tower body and a spray device, a heat exchange device, a packing layer, and an auxiliary spray pipe disposed within the tower body; the spray device is disposed at the top of the tower body in a vertical direction, the heat exchange device is disposed below the spray device, and the packing layer is disposed below the heat exchange device; the circulating cooling water sprayed by the spray device exchanges heat with the outer surface of the heat exchange device, and the packing layer is used to reduce the temperature of the circulating cooling water after heat exchange; the auxiliary spray pipe is disposed between the packing layer and the inner wall of the tower body in a first horizontal direction; and in the vertical direction, the auxiliary spray pipe is disposed between the packing layer and the heat exchange device; the auxiliary spray pipe is connected to the spray device through a connecting pipe, and the auxiliary spray pipe is provided with a plurality of first spray nozzles to spray the area between the packing layer and the inner wall of the tower body.

[0007] In one embodiment of this application, the cooling tower further includes: a water collection tray; the water collection tray is disposed within the tower body and located at the bottom of the tower body; the spraying device is connected to the water collection tray via a vertically arranged main pipe to obtain circulating cooling water stored in the water collection tray; the spraying device includes a transition horizontal pipe connected to the top of the main pipe, the axis of the transition horizontal pipe being parallel to the first horizontal direction; the spraying device further includes multiple spray horizontal pipes connected to the transition horizontal pipe, the axis of the spray horizontal pipes being parallel to a second horizontal direction, the second horizontal direction being perpendicular to the first horizontal direction, and each spray horizontal pipe being provided with multiple second spray nozzles; the auxiliary spraying pipe is connected to the end of the transition horizontal pipe via a connecting pipe, the end of the transition horizontal pipe being away from the main pipe along the second horizontal direction.

[0008] In one embodiment of this application, the connecting pipe includes a vertically arranged first connecting pipe, the two ends of which are respectively connected to the end of the transition horizontal pipe and the inlet of the auxiliary spray pipe along its axial direction.

[0009] In one embodiment of this application, the connecting pipe further includes a horizontally arranged second connecting pipe, one end of which is connected to the first connecting pipe along its axial direction, and the other end extends along the second horizontal direction toward the inner wall of the tower body and is connected to the inlet of the auxiliary spray pipe.

[0010] In one embodiment of this application, the axial direction of the auxiliary spray pipe is parallel to the first horizontal direction; or, along the vertical direction, the horizontal plane where the inlet of the auxiliary spray pipe is located is higher than the horizontal plane where the end of the auxiliary spray pipe is located.

[0011] In one embodiment of this application, the auxiliary spray pipe and / or the second connecting pipe are provided with a drain outlet.

[0012] In one embodiment of this application, the transition horizontal tube and the first connecting tube are connected by a transfer tube, the transfer tube comprising: a first connecting section, a transition connecting section, and a second connecting section; the transition connecting section includes a first opening and a second opening, the central axes of the first opening and the second opening are perpendicular, and the first opening and the second opening are respectively connected to the first connecting section and the second connecting section; a first sealing groove is provided on the inner peripheral wall of the first connecting section near the transition connecting section, and a second sealing groove is provided on the inner peripheral wall of the second connecting section near the transition connecting section, wherein a first sealant and a second sealant are respectively provided in the first sealing groove and the second sealing groove; both the inner peripheral walls of the first connecting section and the second connecting section are provided with internal threads, and the transition horizontal tube and the first connecting tube are respectively provided with external threads matching the internal threads; the transition horizontal tube is connected to the first connecting section and the outer peripheral wall of the transition horizontal tube abuts against the first sealant, and the first connecting tube is connected to the second connecting section and the outer peripheral wall of the first connecting tube abuts against the second sealant.

[0013] 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 fourth sealing groove is provided on the inner peripheral wall of the second connecting segment away from the transition connecting segment. A third sealant and a fourth sealant are respectively provided in the third sealing groove and the fourth sealing groove. The outer peripheral wall of the transition horizontal tube abuts against the third sealant, and the outer peripheral wall of the first connecting tube abuts against the fourth sealant.

[0014] In one embodiment of this application, the first sealant, the second sealant, the third sealant, and the fourth sealant are rubber rings or adhesives.

[0015] In one embodiment of this application, a plurality of the first spray nozzles are arranged at equal intervals along the first horizontal direction.

[0016] The cooling tower provided in this application has the following technical effects:

[0017] By adding an auxiliary spray pipe in the edge area between the packing layer and the inner wall of the tower, and connecting the auxiliary spray pipe to the spraying device through a connecting pipe, the multiple first spray nozzles on the auxiliary spray pipe can spray circulating cooling water into the edge area to spray and flush the edge area, prevent scale buildup in the edge area, improve the cooling efficiency of the cooling tower, and achieve energy saving. Attached Figure Description

[0018] 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.

[0019] Figure 1 This is a schematic diagram of the main structure of a cooling tower provided in an embodiment of this application;

[0020] Figure 2 A top view of the cooling tower provided in an embodiment of this application;

[0021] Figure 3 This is a side view of the cooling tower provided in an embodiment of this application;

[0022] Figure 4 This is a side view diagram illustrating the connection between the auxiliary spray pipe and the spray device provided in an embodiment of this application.

[0023] Figure 5 A side view diagram illustrating the connection between the auxiliary spray pipe and the spray device provided in the embodiments of this application. Figure 1 ;

[0024] Figure 6 A side view diagram illustrating the connection between the auxiliary spray pipe and the spray device provided in the embodiments of this application. Figure 2 ;

[0025] Figure 7 This is a top view diagram showing the connection between the auxiliary spray pipe and the spray device when two sets of spray devices are provided in the cooling tower provided in the embodiment of this application.

[0026] Figure label:

[0027] 100-Tower body;

[0028] 200-fan;

[0029] 300-Spraying device;

[0030] 301-Sprayer horizontal pipe; 302-Second spray nozzle; 303-Transition horizontal pipe; 304-First connecting pipe; 305-Second connecting pipe; 306-Third connecting pipe; 310-Main pipe;

[0031] 400 - Heat exchange device;

[0032] 401 - Coil;

[0033] 500 - Filler layer;

[0034] 601 - Auxiliary spray pipe; 602 - First spray nozzle;

[0035] 700-Water collection tray;

[0036] 701 - Spray pump. Detailed Implementation

[0037] 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.

[0038] refer to Figures 1-3 The cooling tower provided in this application embodiment is a closed-loop cooling tower.

[0039] The cooling tower includes: a tower body 100 and a fan 200, a spray device 300, a heat exchange device 400, a packing layer 500, and a water collection tray 700 installed inside the tower body.

[0040] The fan 200 is installed at the top of the tower body 100 and is used to enhance the airflow inside the tower body 100.

[0041] The spray device 300 is installed at the top of the tower body 100.

[0042] Along the vertical direction (z-axis shown in the figure), the heat exchange device 400 is located below the spray device 300. The heat exchange device 400 includes multiple coils 401, and process fluids such as water, oil, and ethylene glycol solution are placed inside the coils 401.

[0043] A water collection tray 700 is located at the bottom of the tower body 100 to collect circulating cooling water. A spray pump 701 is installed inside the water collection tray 700. The circulating cooling water in the water collection tray 700 is drawn up to the top of the tower body 100 by the spray pump 701 and sprayed onto the outer surface of multiple coils 401 by the spray device 300. The circulating cooling water exchanges heat with the process fluid in the coils 401 and achieves cooling of the process fluid through indirect heat exchange.

[0044] The packing layer 500 is located below the heat exchange device 400. When the circulating cooling water is sprayed out from above the coil 401 and flows through the packing layer 500, it is dispersed into a water film or water droplets, which increases the contact area between the circulating cooling water and the air, accelerates the evaporation and heat dissipation of the circulating cooling water, and the evaporation and heat dissipation can reduce the temperature of the circulating cooling water, so that when it flows back to the outer surface of the coil 401 in the next circulation, it can more efficiently remove the heat of the process fluid in the coil 401, and improve the overall heat dissipation capacity.

[0045] The cooling tower also includes an auxiliary spray pipe 601, which is installed inside the tower body 100. Along the first horizontal direction (x-axis shown in the figure), the auxiliary spray pipe 601 is installed between the packing layer 500 and the inner wall of the tower body 100; and along the vertical direction (z-axis shown in the figure), the auxiliary spray pipe 601 is installed between the packing layer 500 and the heat exchange device 400.

[0046] In other words, the auxiliary spray pipe 601 is located below the heat exchange device 400 and in the edge region A between the packing layer 500 and the inner wall of the tower body 100.

[0047] The auxiliary spray pipe 601 is connected to the spray device 300 through a connecting pipe, so that the circulating cooling water in the spray device 300 is transported to the auxiliary spray pipe 601. The auxiliary spray pipe 601 is provided with a plurality of first spray nozzles 602 arranged at intervals along the axial direction of the auxiliary spray pipe 601. The plurality of first spray nozzles 602 are used to spray the circulating cooling water into the edge area A, so as to spray the edge area A. The scouring of the edge area A by the circulating cooling water avoids scale formation, improves the cooling efficiency of the cooling tower and achieves energy saving effect.

[0048] Continue to refer to Figures 1-3 In this embodiment of the application, the cooling tower further includes a vertically arranged main pipe 310.

[0049] The inlet of the main pipe 310 is located at the bottom of the tower body 100, and the outlet of the main pipe 310 extends to the top of the tower body 100. The inlet of the main pipe 310 is connected to the outlet of the spray pump 701, and the spray pump 701 can pump the circulating cooling water in the water collection pan 700 to the main pipe 310.

[0050] The spray device 300 includes a transition horizontal pipe 303 connected to the outlet of the main pipe 310. The axis of the transition horizontal pipe 303 is parallel to the first horizontal direction (x-axis shown in the figure) so that the spray device 300 communicates with the water collection tray 700 to obtain the circulating cooling water stored in the water collection tray 700 and ensure that the circulating cooling water is lifted to the top of the tower body 100.

[0051] The spray device 300 also includes a plurality of spray horizontal pipes 301 connected to the transition horizontal pipe 303. The plurality of spray horizontal pipes 301 are arranged at equal intervals along the axial direction (x-axis shown in the figure) of the transition horizontal pipe 303. The axial direction of the spray horizontal pipes 301 is parallel to the second horizontal direction (y-axis shown in the figure, the second horizontal direction is perpendicular to the first horizontal direction). Each spray horizontal pipe 301 is provided with a plurality of second spray nozzles 302 arranged at equal intervals along its axial direction to ensure that the circulating cooling water is evenly sprayed onto the outer surface of the coil 401.

[0052] The auxiliary spray pipe 601 is connected to the end of the transition horizontal pipe 303 through a connecting pipe. The end of the transition horizontal pipe 303 is away from the main pipe 310 along the second horizontal direction (y-axis shown in the figure). While leading the circulating cooling water in the spray device 300 to the auxiliary spray pipe 601, it avoids the circulation of the circulating cooling water from flowing out and causing a reduction in the flow rate of the circulating cooling water in the spray horizontal pipe 301, thus ensuring the cooling effect.

[0053] refer to Figure 4 and Figure 5 In this embodiment of the application, the connecting pipe includes a vertically arranged first connecting pipe 304, and the two ends of the first connecting pipe 304 along its axial direction are respectively connected to the end of the transition horizontal pipe 303 and the inlet of the auxiliary spray pipe 601.

[0054] One end of the first connecting pipe 304 along its axial direction is located at the top of the tower body 100 and is connected to the end of the transition horizontal pipe 303. The other end of the first connecting pipe 304 along its axial direction extends downward in the vertical direction (z-axis shown in the figure) and extends to the position between the heat exchange device 400 and the packing layer 500. The other end of the first connecting pipe 304 along its axial direction is connected to the inlet of the auxiliary spray pipe 601, so that the circulating cooling water in the spray device 300 is led to the auxiliary spray pipe 601.

[0055] The connection method is simple and easy to implement, and no water will remain in the vertically installed first connecting pipe 304, thus preventing the first connecting pipe 304 from freezing and cracking when the cooling tower is not in use during winter.

[0056] In this embodiment of the application, the axial direction of the auxiliary spray pipe 601 is parallel to the first horizontal direction (x-axis shown in the figure).

[0057] Alternatively, along the vertical direction (the z-axis shown in the figure), the horizontal plane where the inlet of the auxiliary spray pipe 601 is located is higher than the horizontal plane where the end of the auxiliary spray pipe 601 is located, so that the auxiliary spray pipe 601 is set at an angle to ensure that no water remains in the auxiliary spray pipe 601 and to prevent the auxiliary spray pipe 601 from freezing and cracking when the cooling tower is not used in winter.

[0058] In this embodiment, the auxiliary spray pipe 601 is also provided with a drain outlet. When the cooling tower is not in use during winter, the drain outlet is opened to drain water and prevent the auxiliary spray pipe 601 from freezing and cracking.

[0059] refer to Figure 6 In this embodiment of the application, the connecting pipe further includes a horizontally arranged second connecting pipe 305. The axial direction of the second connecting pipe 305 is parallel to the second horizontal direction (y-axis shown in the figure). One end of the second connecting pipe 305 along its axial direction is connected to the end of the first connecting pipe 304. The other end of the second connecting pipe 305 along its axial direction extends towards the inner wall of the tower body 100 along the second horizontal direction and is connected to the inlet of the auxiliary spray pipe 601.

[0060] A second connecting pipe 305 is added to the first connecting pipe 304 to accommodate cooling towers of various sizes.

[0061] The auxiliary spray pipes 601 may include two or more, and the two or more auxiliary spray pipes 601 may be arranged at the same distance along the axial direction of the second connecting pipe 305 to ensure that each corner of the edge area A can be sprayed evenly.

[0062] In this embodiment, a drain outlet is provided on the second connecting pipe 305. When the cooling tower is not in use during winter, the drain outlet is opened to drain water and prevent the second connecting pipe 305 from freezing and cracking.

[0063] Continue to refer to Figure 6 In this embodiment of the application, a plurality of first spray nozzles 602 are arranged at equal intervals along a first horizontal direction (x-axis shown in the figure) to ensure that the circulating cooling water can be sprayed evenly.

[0064] refer to Figure 2 and Figure 7 In this embodiment of the application, the cooling tower may include two sets of spray devices 300, which are distributed at intervals in the tower body 100 along the first horizontal direction (x-axis shown in the figure).

[0065] The two sets of spray devices 300 are connected to the water collection tray 700 through two main pipes 310 respectively. Two spray pumps 701 are installed in the water collection tray 700, and the two spray pumps 701 are connected to the pipe inlets of the two main pipes 310 respectively.

[0066] The connecting pipes also include two horizontally arranged third connecting pipes 306.

[0067] The axial direction of the third connecting pipe 306 is parallel to the second horizontal direction (y-axis shown in the figure). The two ends of the third connecting pipe 306 extend towards the two opposite inner walls of the tower body 100 in the second horizontal direction. The two ends of the third connecting pipe 306 are connected to auxiliary spray pipes 601 to ensure that each edge area A between the packing layer 500 and the inner wall of the tower body 100 can be sprayed.

[0068] In this embodiment, the end of the transition horizontal pipe 303 is connected to the first connecting pipe 304, the first connecting pipe 304 is connected to the auxiliary spray pipe 601, the first connecting pipe 304 is connected to the second connecting pipe 305, the second connecting pipe 305 is connected to the auxiliary spray pipe 601, the end of the transition horizontal pipe 303 is connected to the third connecting pipe 306, and the third connecting pipe 306 is connected to the auxiliary spray pipe 601 through a transfer pipe.

[0069] The following description uses the transfer pipe between the transition horizontal pipe 303 and the first connecting pipe 304 as an example to illustrate the specific structure of the transfer pipe.

[0070] The transfer pipe includes: a first connecting section, a transition connecting section, and a second connecting section.

[0071] The transition connection section is an arc-shaped pipe, which includes a first opening and a second opening. The central axes of the first opening and the second opening are perpendicular, and the first opening and the second opening are respectively connected to the first connection section and the second connection section.

[0072] The inner circumferential walls of the first connecting section and the second connecting section are provided with internal threads, and the transition horizontal tube 303 and the first connecting tube 304 are respectively provided with external threads that match the internal threads; so that the first connecting section and the second connecting section are threadedly connected to the transition horizontal tube 303 and the first connecting tube 304 respectively, thereby improving the connection stability and connection strength while ensuring the sealing effect.

[0073] The threaded connection is the first layer of seal when the adapter pipe is connected to the transition horizontal pipe 303 and the first connecting pipe 304.

[0074] A first sealing groove is provided on the inner peripheral wall of the first connecting section near the transition connecting section, and 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. The transition horizontal pipe 303 is connected to the first connecting section and the outer peripheral wall of the transition horizontal pipe 303 abuts against the first sealant. The first connecting pipe 304 is connected to the second connecting section and the outer peripheral wall of the first connecting pipe 304 abuts against the second sealant.

[0075] The first and second sealants are used to further seal the transition pipe, the horizontal transition pipe 303, and the first connecting pipe 304 to prevent leakage of circulating cooling water.

[0076] The first and second sealants are the second layer of sealant when the adapter pipe is connected to the transition horizontal pipe 303 and the first connecting pipe 304.

[0077] A third sealing groove is provided on the inner peripheral wall of the first connecting section away from the transition connecting section, and a fourth sealing groove is provided on the inner peripheral wall of the second connecting section away from the transition connecting section. A third sealant and a fourth sealant are respectively provided in the third sealing groove and the fourth sealing groove. The outer peripheral wall of the transition horizontal pipe 303 abuts against the third sealant, and the outer peripheral wall of the first connecting pipe 304 abuts against the fourth sealant.

[0078] The third and fourth sealants are used to further seal the adapter pipe, transition horizontal pipe 303, and first connecting pipe 304 to prevent leakage of circulating cooling water.

[0079] The third and fourth sealants are the third layer of sealant when the transfer pipe is connected to the transition horizontal pipe 303 and the first connecting pipe 304.

[0080] At the same time, adhesive is applied to the contact gap between the transfer pipe, the transition horizontal pipe 303, and the first connecting pipe 304 to achieve a fourth layer of sealing.

[0081] The first, second, third, and fourth sealants are rubber rings or adhesives.

[0082] In this embodiment, the cooling tower further includes: a water supply pipe, a liquid level sensor, and a control system.

[0083] 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 700. When the water level in the water collection tray 700 is low, it is used to replenish water into the water collection tray 700.

[0084] The control system is electrically connected to the level sensor and the solenoid valve on the water supply pipeline.

[0085] A liquid level sensor is installed in the water collection pan 700 to detect whether the water level in the water collection pan 700 is lower than a preset value. When the water level is detected to be lower than the preset value, an alarm signal will be issued and fed back to the control system. The control system will control the solenoid valve on the water supply pipe to open and supply water. When the water level is detected to be higher than the preset value, a signal indicating that there is sufficient cooling water will be issued and fed back to the control system. The control system will then control the solenoid valve on the water supply pipe to close and stop supplying water.

[0086] It should be noted that when the water level in the water collection pan 700 is lower than the preset value, the control system will control the spray pump 701 to stop to prevent the spray pump 701 from running dry.

[0087] Cooling towers also include: conductivity meters.

[0088] The conductivity meter is installed in the water collection pan 700. The conductivity meter is used to detect the water quality of the circulating cooling water in the water collection pan 700. 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.

[0089] In summary, this application provides a cooling tower, including a tower body 100 and a spray device 300, a heat exchange device 400, a packing layer 500, and an auxiliary spray pipe 601 disposed within the tower body. The spray device 300 is disposed at the top of the tower body 100 along the vertical direction (z-axis shown in the figure). The heat exchange device 400 is disposed below the spray device 300, and the packing layer 500 is disposed below the heat exchange device 400. The circulating cooling water sprayed by the spray device 300 exchanges heat with the outer surface of the heat exchange device 400. The packing layer 500 is used to reduce the temperature of the circulating cooling water after heat exchange. Along the first horizontal direction (shown in the figure)... Along the x-axis, the auxiliary spray pipe 601 is located between the packing layer 500 and the inner wall of the tower body 100; and along the vertical direction (z-axis shown in the figure), the auxiliary spray pipe 601 is located between the packing layer 500 and the heat exchange device 400; the auxiliary spray pipe 601 is connected to the spray device 300 through a connecting pipe, and the auxiliary spray pipe 601 is provided with a plurality of first spray nozzles 602, which are used to spray circulating cooling water into the edge area A between the packing layer 500 and the inner wall of the tower body 100, so as to spray the edge area A, prevent scale formation in the edge area A by the flushing of the circulating cooling water, improve the cooling efficiency of the cooling tower and achieve energy saving effect.

[0090] 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.

[0091] 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.

[0092] 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.

[0093] 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).

[0094] 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.

[0095] 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 cooling tower, characterized in that, include: The tower body, and the spraying device, heat exchange device, packing layer and auxiliary spraying pipe installed inside the tower body; The spraying device is located at the top of the tower body in a vertical direction. The heat exchange device is located below the spraying device and the packing layer is located below the heat exchange device. The circulating cooling water sprayed by the spraying device exchanges heat with the outer surface of the heat exchange device. The packing layer is used to reduce the temperature of the circulating cooling water after heat exchange. Along the first horizontal direction, the auxiliary spray pipe is disposed between the packing layer and the inner wall of the tower body; and along the vertical direction, the auxiliary spray pipe is disposed between the packing layer and the heat exchange device. The auxiliary spray pipe is connected to the spraying device through a connecting pipe. The auxiliary spray pipe is equipped with a plurality of first spray nozzles to spray the area between the packing layer and the inner wall of the tower body.

2. The cooling tower according to claim 1, characterized in that, The cooling tower also includes: a water collection tray; The water collection tray is disposed inside the tower body and located at the bottom of the tower body; The spraying device is connected to the water collection tray through a vertically installed main pipe to obtain the circulating cooling water stored in the water collection tray; The spraying device includes a transition horizontal pipe connected to the top of the main pipe, and the axial direction of the transition horizontal pipe is parallel to the first horizontal direction. The spraying device also includes a plurality of spraying horizontal pipes connected to the transition horizontal pipe. The axial direction of the spraying horizontal pipe is parallel to the second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction. Each spraying horizontal pipe is provided with a plurality of second spray nozzles. The auxiliary spray pipe is connected to the end of the transition horizontal pipe via a connecting pipe, and the end of the transition horizontal pipe is away from the main pipe along the second horizontal direction.

3. The cooling tower according to claim 2, characterized in that, The connecting pipe includes a vertically arranged first connecting pipe, the two ends of which are connected to the end of the transition horizontal pipe and the inlet of the auxiliary spray pipe, respectively.

4. The cooling tower according to claim 3, characterized in that, The connecting pipe also includes a horizontally arranged second connecting pipe, one end of which is connected to the first connecting pipe along its axial direction, and the other end extends along the second horizontal direction toward the inner wall of the tower body and is connected to the inlet of the auxiliary spray pipe.

5. The cooling tower according to claim 3, characterized in that, The axial direction of the auxiliary spray pipe is parallel to the first horizontal direction; or, Along the vertical direction, the horizontal plane at the inlet of the auxiliary spray pipe is higher than the horizontal plane at the end of the auxiliary spray pipe.

6. The cooling tower according to claim 4, characterized in that, The auxiliary spray pipe and / or the second connecting pipe are provided with a drain outlet.

7. The cooling tower according to claim 3, characterized in that, The transition horizontal pipe is connected to the first connecting pipe via a transfer pipe, which includes: a first connecting section, a transition connecting section, and a second connecting section. The transition connection segment includes a first opening and a second opening, the central axes of the first opening and the second opening are perpendicular to each other, and the first opening and the second opening are respectively connected to the first connection segment and the second connection segment; The first connecting segment has a first sealing groove on its inner peripheral wall near the transition connecting segment, and the second connecting segment has a second sealing groove on its inner peripheral wall near the transition connecting segment. The first sealing groove and the second sealing groove are respectively provided with a first sealant and a second sealant. The inner peripheral walls of the first connecting section and the second connecting section are provided with internal threads, and the transition horizontal tube and the first connecting tube are respectively provided with external threads that match the internal threads; The transition horizontal tube is connected to the first connecting section and the outer peripheral wall of the transition horizontal tube abuts against the first sealant. The first connecting tube is connected to the second connecting section and the outer peripheral wall of the first connecting tube abuts against the second sealant.

8. The cooling tower according to claim 7, characterized in that, The first connecting segment has a third sealing groove on its inner peripheral wall away from the transition connecting segment, and the second connecting segment has a fourth sealing groove on its inner peripheral wall away from the transition connecting segment. The third sealing groove and the fourth sealing groove are respectively provided with a third sealant and a fourth sealant. The outer peripheral wall of the transition horizontal tube abuts against the third sealant, and the outer peripheral wall of the first connecting tube abuts against the fourth sealant.

9. The cooling tower according to claim 8, characterized in that, The first sealant, the second sealant, the third sealant, and the fourth sealant are rubber rings or adhesives.

10. The cooling tower according to claim 3, characterized in that, Multiple first spray nozzles are arranged at equal intervals along the first horizontal direction.

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