Water collecting device for cooling tower
By using a filter screen to separate the water collection tank in the cooling tower water collection device, the cooling return water can be filtered and collected, solving the clogging problem caused by sediment in the cooling water, and improving the operational stability of the cooling tower and equipment as well as the continuity of electrolytic aluminum production.
Patent Information
- Application Number
- CN202521580876.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-28
- Publication Date
- 2026-06-16
- Estimated Expiration
- 2035-07-28
Smart Images
Figure CN224365427U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of cooling tower technology, and more particularly to a water collection device for cooling towers. Background Technology
[0002] Cooling towers are needed to cool the processing equipment in the non-ferrous metal smelting and rolling process. Taking the electrolytic cell used by the applicant for electrolytic aluminum as an example, the electrolytic cell is powered by a rectifier unit. In order to ensure the stability and service life of the rectifier unit, each rectifier unit is equipped with a cooling tower for cooling. In order to ensure the effective use of cooling water, the cooling water needs to be collected by the cooling tower with a water collection device.
[0003] Existing cooling towers use water collection systems that collect cooling water through collection tanks. However, over long-term operation, the cooling water entering these tanks accumulates a large amount of sediment (such as silt, iron filings, etc.). When this sediment flows into the rectifier unit for heat exchange and then into the spray pipes, it clogs the heat exchange pipes and spray pipes, affecting the spraying effect. Furthermore, it causes scaling on the packing layer, further hindering heat dissipation and reducing the cooling tower's lifespan. Therefore, to ensure the cooling tower's lifespan, both the cooling tower and spray heads need to be cleaned at least twice a year. Specifically, during cleaning, one rectifier unit should be shut down for approximately 4-6 hours. This shutdown will stop the electrolysis process in the corresponding electrolytic cell, reducing aluminum production. Moreover, if other operating rectifier units malfunction, aluminum production will cease entirely. Utility Model Content
[0004] This application provides a water collection device for cooling towers to solve the technical problems described in the background art.
[0005] To solve the above-mentioned technical problems, this application adopts the following technical solution:
[0006] This application provides a water collection device for cooling towers, comprising:
[0007] The cooling tower body contains a packing layer.
[0008] A spray assembly, one end of which extends into the cooling tower body and is located above the packing layer, and the other end of which is used to connect to the equipment to be cooled;
[0009] A water collection tank is located below the packing layer and has a filter screen inside it. The filter screen is used to divide the water collection tank into a first space with an upper opening and a second space with a closed opening. The first space is used to collect cooling return water flowing through the packing layer, and the second space is used to collect cooling return water that enters the first space after being filtered by the filter screen, and its volume is 1 / 10 to 2 / 10 of the volume of the first space.
[0010] The first water outlet pipe has one end connected to the second space and the other end connected to the water inlet of the equipment to be cooled.
[0011] Optionally, the inner bottom surface of the second space is higher than the inner bottom surface of the first space by a preset height.
[0012] Optionally, there are multiple filter screens, and the multiple filter screens respectively enclose the inner wall of the water collection tank to form multiple second spaces;
[0013] One end of the first water outlet pipe is connected to one of the second spaces, and the remaining second spaces are all connected to second water outlet pipes. The end of each second water outlet pipe away from its corresponding second space is connected to the first water outlet pipe, and each second water outlet pipe is equipped with a first solenoid valve.
[0014] Optionally, a liquid level sensor is provided in the first space, and a water supply pipe is connected to it, with a second solenoid valve installed on the water supply pipe.
[0015] Optionally, the spray assembly includes a first spray pipe and a plurality of second spray pipes;
[0016] One end of the first spray pipe is connected to the return water port of the equipment to be cooled, and the other end extends into the body of the cooling tower. Multiple second spray pipes are connected to the pipe body of the first spray pipe located inside the body of the cooling tower. Multiple high-pressure spray heads facing the packing layer are equally spaced on each second spray pipe.
[0017] Optionally, a booster pump is installed on the first spray pipe.
[0018] Optionally, a circulating water pump is installed on the first water outlet pipe near the equipment to be cooled.
[0019] The cooling tower water collection device provided in this application sprays return water from the equipment to be cooled onto the packing layer inside the cooling tower body through a spray assembly. After heat exchange with the packing layer, the cooled return water is collected and recycled through a first space in the water collection tank. The return water in the first space is filtered by a filter screen and then enters a second space, and re-enters the equipment to be cooled through a first outlet pipe connected to the second space. Compared with existing cooling tower water collection devices, this application uses a filter screen to divide the water collection tank into a first space for collecting cooled return water and a second space for collecting filtered cooled return water. This not only achieves the collection of cooled return water but also the filtration of impurities in the cooled return water, thereby minimizing the possibility of the cooled return water being contaminated with impurities and causing blockages in the first outlet pipe, the heat exchange pipes of the equipment to be cooled, the spray assembly, and the packing layer. In addition, since the volume of the second space is 1 / 10 to 2 / 10 of the volume of the first space, the first space can accommodate enough cooled return water, while the second space can be used for filtered cooling return water. This reduces the frequency of failures and maintenance costs of the cooling tower and the equipment to be cooled, thereby ensuring the continuity and output of the electrolytic aluminum production process. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 This is a schematic diagram of the structure of a water collection device for a cooling tower provided in an embodiment of this application;
[0022] Figure 2 This is a schematic diagram of the structure of a water collection device for a cooling tower provided in another embodiment of this application;
[0023] Figure 3 This is a schematic diagram of the internal structure of a cooling tower body provided in an embodiment of this application;
[0024] Figure 4 This is a schematic diagram of a cooling tower body with a water collection tank provided in an embodiment of this application;
[0025] Figure 5 This is a schematic diagram showing the electrical connections between the control system of the cooling tower body and its various structural components, according to an embodiment of this application.
[0026] In the diagram: 100, Cooling tower body; 101, Packing layer; 200, Spray assembly; 201, First spray pipe; 2011, Booster pump; 202, Second spray pipe; 2021, High-pressure spray head; 300, Equipment to be cooled; 400, Water collection tank; 401, Filter screen; 402, First space; 4021, Liquid level sensor; 403, Second space; 500, First water outlet pipe; 501, Circulating water pump; 600, Second water outlet pipe; 601, First solenoid valve; 700, Water supply pipe; 701, Second solenoid valve; 800, Control system. Detailed Implementation
[0027] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of this application.
[0028] refer to Figures 1 to 5 This application provides a water collection device for cooling towers, comprising:
[0029] The cooling tower body 100 has a packing layer 101 inside it. The structure and working principle of the cooling tower body 100 and the packing layer 101 can be found in existing cooling towers and the packing layer 101 inside existing cooling towers. The cooling tower body 100 and the packing layer 101 are not the innovations of this application. Therefore, this application will not describe them in detail here.
[0030] The spray assembly 200 has one end extending into the cooling tower body 100 and located above the packing layer 101, while its other end is used to connect to the equipment 300 to be cooled. The equipment 300 can be a rectifier unit used to provide power to the electrolytic cell during aluminum electrolysis, or other equipment requiring cooling used in non-ferrous metal smelting and rolling processes; however, this application does not specifically limit its application to this type of equipment. The spray assembly 200 is used to evenly spray the return water from the equipment 300 onto the packing layer 101 to exchange heat with the packing layer 101, thus obtaining cooled return water.
[0031] A water collection tank 400 is located below the packing layer 101 and has a filter screen 401 installed therein. The filter screen 401 is used to divide the water collection tank 400 into a first open space 402 and a closed second space 403. The first space 402 is used to collect cooling return water flowing through the packing layer 101, and the second space 403 is used to collect cooling return water that enters the first space 402 after being filtered by the filter screen 401, and its volume is 1 / 10 to 2 / 10 of the volume of the first space 402. The filter screen 401 is used to enclose the second space 403 between the two inner sidewalls adjacent to the water collection tank 400. The specifications of the filter screen 401 can be set according to actual needs, and this application does not specifically limit it. It can be connected to the water collection tank 400 by welding or other means. In addition, since the volume of the second space 403 is 1 / 10 to 2 / 10 of the volume of the first space 402, the first space 402 can accommodate enough cooled return water, while the second space 403 can allow filtered cooling return water to pass through, thereby reducing the frequency of failures and maintenance costs of the cooling tower body 100 and the equipment to be cooled 300, and thus ensuring the continuity and output of the electrolytic aluminum production process.
[0032] The first water outlet pipe 500 has one end connected to the second space 403 and the other end connected to the water inlet of the device to be cooled 300. The cooled and filtered return water in the second space 403 enters the device to be cooled 300 through the first water outlet pipe 500. After heat exchange with the device, the return water is sprayed by the spray assembly 200 onto the packing layer 101 inside the cooling tower body 100. This process is repeated to cool and filter the return water from the device to be cooled 300, ensuring the service life of the device and reducing the frequency of malfunctions and maintenance costs of both the cooling tower body 100 and the device to be cooled 300.
[0033] The cooling tower water collection device provided in this application sprays the return water from the equipment to be cooled 300 onto the packing layer 101 inside the cooling tower body 100 through the spray assembly 200. After heat exchange with the packing layer 101, the cooled return water is obtained. The cooled return water is recovered through the first space 402 in the water collection tank 400. The return water in the first space 402 is filtered by the filter screen 401 and enters the second space 403. It then enters the equipment to be cooled 300 again through the first water outlet pipe 500 connected to the second space 403 to cool the equipment 300. Compared to existing cooling tower water collection devices, this application uses a filter screen 401 to divide the water collection tank 400 into a first space 402 for collecting cooled return water and a second space 403 for collecting filtered cooled return water. This not only achieves the collection of cooled return water but also the filtration of impurities in the cooled return water, thereby minimizing the possibility of blockages caused by impurities in the cooled return water to the first outlet pipe 500, the heat exchange pipes of the equipment to be cooled 300, the spray assembly 200, and the packing layer 101. In addition, since the volume of the second space 403 is 1 / 10 to 2 / 10 of the volume of the first space 402, the first space 402 can hold sufficient cooled return water, while the second space 403 allows filtered cooled return water to pass through. This reduces the frequency of failures and maintenance costs of the cooling tower body 100 and the equipment to be cooled 300, thereby ensuring the continuity and output of the electrolytic aluminum production process.
[0034] In some embodiments, reference Figure 4 In this application, the inner bottom surface of the second space 403 is higher than the inner bottom surface of the first space 402 by a preset height (wherein, the preset height can be set according to the actual situation, and this application does not specifically limit it). This allows the cooling return water after heat exchange with the packing layer 101 to enter the first space 402, and the impurities mixed in it to be deposited at the inner bottom of the first space 402. When the water level in the first space 402 is higher than the inner bottom of the second space 403, the cooling return water in the first space 402 enters the second space 403 after being filtered by the filter screen 401. Since the inner bottom surface of the second space 403 is higher than the preset height of the inner bottom surface of the first space 402, some of the impurities in the cooling return water entering the second space 403 are deposited at the inner bottom of the first space 402, thereby relieving the filtration load of the filter screen 401 and extending the service life of the filter screen 401.
[0035] In some embodiments, reference Figure 3 and Figure 4In this application, there are multiple filter screens 401, and the multiple filter screens 401 are respectively enclosed with the inner wall of the water collection tank 400 to form multiple second spaces 403; wherein, the filter screens 401 corresponding to the multiple second spaces 403 can filter the cooling return water simultaneously or individually, thereby improving the filtration efficiency of the cooling return water.
[0036] Specifically, one end of the first water outlet pipe 500 is connected to one of the second spaces 403, and the other second spaces 403 are all connected to second water outlet pipes 600. The end of each second water outlet pipe 600 away from the corresponding second space 403 is connected to the first water outlet pipe 500, and each second water outlet pipe 600 is equipped with a first solenoid valve 601.
[0037] The cooling tower body 100 is similar to an existing cooling tower, which has a control system 800. The control system 800 controls the opening and closing of the first solenoid valve 601 on each second outlet pipe 600, thereby enabling multiple second spaces 403 to discharge simultaneously or one or more second spaces 403 to drain water. This improves the flexibility of the filtration process and reduces the maintenance frequency of the cooling tower body 100 and the equipment 300 to be cooled.
[0038] In some embodiments, reference Figure 5 In this application, a liquid level sensor 4021 is installed in the first space 402, and a water supply pipe 700 is connected to it. A second solenoid valve 701 is installed on the water supply pipe 700. The end of the water supply pipe 700 away from the first space 402 is used to connect to a water source.
[0039] In the above embodiments, during the heat exchange process between the cooling return water and the packing layer 101, some of the return water will evaporate. This means the amount of return water decreases during the cooling process. To ensure the normal operation of the equipment 300 being cooled, a level sensor 4021 detects the level of the cooling return water in the first space 402. When the level in the first space 402 is lower than a preset level (which can be set according to actual conditions, but is not specifically limited here), the control system 800 of the cooling tower body 100 receives the detection signal from the level sensor 4021 and opens the second solenoid valve 701, replenishing water into the first space 402 through the water supply pipe 700. Normally, when the level in the first space 402 is slightly higher than the preset level after water replenishment, the control system 800 of the cooling tower body 100 closes the second solenoid valve 701.
[0040] In some embodiments, reference Figure 3The spray assembly 200 in this application includes a first spray pipe 201 and a plurality of second spray pipes 202. Specifically, one end of the first spray pipe 201 is connected to the return water port of the equipment to be cooled 300, and the other end extends into the cooling tower body 100. The plurality of second spray pipes 202 are all connected to the pipe body of the first spray pipe 201 located inside the cooling tower body 100. Each second spray pipe 202 is provided with a plurality of high-pressure spray heads 2021 at equal intervals facing the packing layer 101. The number of second spray pipes 202 and the number of high-pressure spray heads 2021 on each second spray pipe 202 can be limited according to the size of the packing layer 101, etc., and this application does not make specific limitations on them here.
[0041] In the above embodiment, the return water from the device to be cooled 300 enters each of the second spray pipes 202 through the first spray pipe 201, and is sprayed out through multiple high-pressure nozzles 2021 on the second spray pipe 202 to fully contact the packing layer 101, thereby achieving heat exchange and obtaining cooled return water.
[0042] In some embodiments, reference Figure 5 In this application, a booster pump 2011 is installed on the first spray pipe 201. The booster pump 2011 increases the pressure of the return water entering the first spray pipe 201 from the equipment to be cooled 300, entering each of the second spray pipes 202 from the first spray pipe 201, and exiting through multiple high-pressure nozzles 2021 connected to each of the second spray pipes 202. This results in better dispersion of the water sprayed through the high-pressure nozzles 2021, allowing for more thorough contact with the packing layer 101 for heat exchange. The start and stop of the booster pump 2011 are controlled by the control system 800 of the cooling tower body 100.
[0043] In some embodiments, reference Figure 5 In this application, a circulating water pump 501 is installed on the first outlet pipe 500 near the cooling equipment 300. The circulating water pump 501 provides the flow power for the cooled return water between the first outlet pipe 500, the second outlet pipe 600, and the cooling equipment 300, ensuring stable operation of the water collection process. The start and stop of the circulating water pump 501 are controlled by the control system 800 of the cooling tower body 100.
[0044] 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 water collection device for a cooling tower, characterized in that, include: Cooling tower body (100), wherein a packing layer (101) is provided inside the cooling tower body (100). A spray assembly (200) has one end extending into the cooling tower body (100) and located above the packing layer (101), and the other end of which is used to connect to the equipment to be cooled (300). A water collection tank (400) is located below the packing layer (101) and a filter screen (401) is provided therein. The filter screen (401) is used to divide the water collection tank (400) into a first space (402) with an upper opening and a second space (403) with a closed opening. The first space (402) is used to collect cooling return water flowing through the packing layer (101). The second space (403) is used to collect cooling return water that enters the first space (402) after being filtered by the filter screen (401) and its volume is 1 / 10 to 2 / 10 of the volume of the first space (402). The first water outlet pipe (500) has one end connected to the second space (403) and the other end connected to the water inlet of the device to be cooled (300).
2. The water collection device for cooling towers according to claim 1, characterized in that, The inner bottom surface of the second space (403) is higher than the inner bottom surface of the first space (402) by a predetermined height.
3. The water collection device for cooling towers according to claim 1, characterized in that, There are multiple filter screens (401), and the multiple filter screens (401) are respectively enclosed with the inner wall of the water collection tank (400) to form multiple second spaces (403). One end of the first water outlet pipe (500) is connected to one of the second spaces (403), and the other second spaces (403) are all connected to a second water outlet pipe (600). The end of each second water outlet pipe (600) away from the corresponding second space (403) is connected to the first water outlet pipe (500), and each second water outlet pipe (600) is provided with a first solenoid valve (601).
4. The water collection device for cooling towers according to claim 1, characterized in that, A liquid level sensor (4021) is installed in the first space (402), and a water supply pipe (700) is connected to it. A second solenoid valve (701) is installed on the water supply pipe (700).
5. The water collection device for cooling towers according to claim 1, characterized in that, The spray assembly (200) includes a first spray pipe (201) and a plurality of second spray pipes (202). One end of the first spray pipe (201) is connected to the return water port of the device to be cooled (300), and the other end extends into the cooling tower body (100). A plurality of second spray pipes (202) are connected to the pipe body of the first spray pipe (201) located in the cooling tower body (100). Each second spray pipe (202) is provided with a plurality of high-pressure spray heads (2021) facing the packing layer (101) at equal intervals.
6. The water collection device for cooling towers according to claim 5, characterized in that, A booster pump (2011) is installed on the first spray pipe (201).
7. The water collection device for cooling towers according to any one of claims 1 to 6, characterized in that, A circulating water pump (501) is installed on the first water outlet pipe (500) near the cooling device (300).