Cooling tower convenient for water chiller maintenance

Abstract

A cooling tower facilitating water chiller maintenance comprises a cooling tower body and an air draft device, the cooling tower body is formed by assembling a shell, a spraying device, oblique staggered filler and a water collecting tank, the spraying device comprises a main pipeline, an auxiliary pipeline, a spraying pipeline, a spraying head and a butterfly valve, the main pipeline is arranged in the middle of the top end in the shell, and the auxiliary pipeline is arranged in the middle of the top end in the shell. A plurality of liquid outlets and through holes are formed in the main pipeline, spraying pipelines are arranged in the through holes in parallel, spraying heads are arranged at the two ends of each spraying pipeline, an auxiliary pipeline is arranged above the main pipeline, and liquid inlets corresponding to the liquid outlets in the top end of the main pipeline in a one-to-one mode are formed in the bottom end of the auxiliary pipeline; the liquid outlets and the liquid inlets are connected through maintenance pipelines, and butterfly valves are arranged at the two ends, making contact with the maintenance pipelines, of the main pipeline. By means of the auxiliary pipeline and the butterfly valves, the specific spraying pipeline can be closed, and therefore the effect of keeping the cooling tower running in the water chiller maintenance process is achieved.

Description

Technical Field

[0001] The utility model relates to the field of cooling towers, in particular to a cooling tower which is convenient for repairing a chiller. Background Art

[0002] Cooling towers are essential equipment in many large factories, shopping malls, and thermal power plants. They exchange heat between the cooling water carrying waste heat and the air inside the tower, so that the waste heat is transferred to the air and dispersed into the atmosphere. A cooling tower is a device that uses the contact between air and water (directly or indirectly) to cool water. It uses water as a circulating coolant, absorbs heat from a system and discharges it into the atmosphere, thereby reducing the temperature inside the tower and making the cooling water recyclable. When the pipeline of the existing cooling tower spray device fails, it must be shut down for maintenance, and the equipment connected to it must also stop working, which has a certain impact on its use.

[0003] At present, the Chinese patent with the authorization announcement number CN217585391 U discloses a new type of cooling tower, including a frame, a cooling tower body, an exhaust device, a spray device, a filler bracket and a water collecting tank; the cooling tower body is provided with a water inlet connected to the spray device and a water outlet connected to the water collecting tank, and the side of the cooling tower body is provided with an air inlet; the exhaust device is installed in the opening at the top of the cooling tower body; the spray device is provided with a plurality of spray ports; the filler bracket is at least one layer, and the multi-layer filler bracket is arranged at intervals along the height direction of the cooling tower body, which is used to fix the cooling filler, and the number of layers of the filler bracket can be adjusted according to the volume and weight of the cooling filler to adapt to the cooling filler. When it is necessary to adjust the number of layers of the filler bracket according to the volume and weight of different cooling fillers, the structure of the filler bracket can be adjusted according to the volume and weight of the cooling seasoning, and the cooling filler can be fixed well at the same time, which improves the utilization rate and practicality of the filler bracket.

[0004] The above-mentioned prior art solution has the following defects: the design has made certain improvements on the filler, but the probability of failure of the cooling tower filler is relatively small. If the main water pipe of the spray device is blocked, the entire cooling tower must still be shut down for maintenance. Utility Model Content

[0005] The utility model aims to provide a cooling tower which is convenient for the maintenance of a chiller, so as to solve the problems existing in the above-mentioned prior art.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions:

[0007] A cooling tower for facilitating the maintenance of a chiller, comprising a cooling tower body and an exhaust device, characterized in that: the exhaust device is arranged at the top of the cooling tower body, the cooling tower body is assembled from a shell, a spray device, an obliquely staggered filler, and a water collecting tank, and the spray device comprises a main pipeline, a secondary pipeline, a spray pipeline, a spray head, and a butterfly valve;

[0008] The main pipeline is arranged in the middle position of the top end of the shell, and a plurality of liquid outlets and through holes are arranged on the main pipeline. Spray pipelines are arranged in parallel in the plurality of through holes, and spray heads are arranged at both ends of the spray pipeline. A secondary pipeline is arranged above the main pipeline, and a liquid inlet corresponding to the liquid outlet at the top end of the main pipeline is arranged at the bottom end of the secondary pipeline. The plurality of liquid outlets and liquid inlets are connected through a maintenance pipeline, and butterfly valves are arranged at both ends of the main pipeline in contact with the maintenance pipeline.

[0009] By adopting the above technical solution, the spray pipe can be divided into multiple sections, which are closed and opened by butterfly valves. During normal operation, circulating water with waste heat passes through the main pipe. When a sprinkler head is blocked, the two butterfly valves near the sprinkler head can be closed to allow the liquid to pass through the secondary pipe. At this time, the blocked sprinkler head can be removed and maintained. The temperature of the circulating water with waste heat itself is also around 40°C. As long as it is not in contact for more than 7 hours, it will not cause harm to the human body. This avoids the cooling water gap during cooling tower maintenance and effectively improves production efficiency.

[0010] In a further embodiment, a maintenance ladder is provided on one side of the shell, a protective cage is provided at the top of the maintenance ladder, a transparent enclosure is provided at the periphery of the top of the shell, a plurality of ventilation grooves are provided under the side panel of the shell, a water inlet and a water outlet are provided on one side of the shell, and the main pipeline is connected to the circulation pump through the water inlet.

[0011] By adopting the above technical solution, since the height of the cooling tower is generally high, a protective cage is installed at the top of the ladder to prevent maintenance workers from falling due to improper operation, and the transparent enclosure can protect the safety of personnel without affecting the heat dissipation efficiency of the cooling tower.

[0012] In a further embodiment, a water collecting trough is provided at the inner bottom end of the shell, a through hole corresponding to the water outlet of the shell is provided on one side of the water collecting trough, and the through hole of the water collecting trough is connected to the circulation pump through a pipeline.

[0013] By adopting the above technical solution, the water collection tank is used to collect the circulating water that falls through the filler. After evaporation heat dissipation and contact heat dissipation, the circulating water at this time has been cooled and can be pumped back by the circulation pump for continued use.

[0014] In a further embodiment, a bracket is provided at the periphery of the top end of the sump, and an obliquely staggered filler is provided in the bracket.

[0015] By adopting the above technical solution, the role of the filler in the cooling tower is to increase the heat dissipation, prolong the cooling water residence time, increase the heat exchange area, and increase the heat exchange amount. It is not convenient to replace the filler because it is in direct contact with the shell. The bracket set at the periphery of the sump can facilitate the replacement of the filler, and the bracket is also provided with a waterproof layer to avoid rust and damage due to long-term contact with water vapor. The oblique staggered filler is durable and has a good cooling effect. The filler is assembled in two forms: ring material and screw, and the inclination angle is generally 60 degrees.

[0016] In a further embodiment, a water baffle is provided at the top of the spray device.

[0017] By adopting the above technical solution, in order to increase the heat exchange efficiency, the exhaust device will extract the humid air with waste heat from the cooling tower. In this process, circulating water will inevitably be lost. By setting the water baffle, the loss of circulating water in this process can be greatly reduced. The water baffle and filler are both made of PVC material, which can withstand high temperatures, is easy to process and shape, and has moderate strength.

[0018] In a further embodiment, a plurality of the exhaust devices are provided, and the exhaust devices include a wind tube, a motor, an impeller and a fan cover. The wind tube is fixedly connected to the top of the shell, a fan cover is provided on the periphery of the top of the wind tube, an impeller is coaxially provided in the wind tube, the impeller is sleeved on the rotating shaft of the motor, and the motor is provided at the top of the water baffle.

[0019] By adopting the above technical solution, the air flow in the cooling tower can be accelerated, the waste heat can be avoided from accumulating in the cooling tower, the hot and humid air that has exchanged the waste heat can be extracted from the cooling tower, and the dry cold air can be sucked into the cooling tower from the ventilation groove arranged at the bottom of the shell, thereby improving the heat exchange efficiency. This impeller is made of ABS material, with excellent mechanical properties, excellent impact strength, excellent wear resistance and a long service life.

[0020] In summary, the utility model has the following beneficial effects:

[0021] 1. Through the setting of main and auxiliary pipelines and butterfly valves, the cooling tower can still work during the maintenance process;

[0022] 2. The setting of the packing bracket can facilitate the replacement of the packing. When the packing is blocked or tilted, it is more convenient to observe and determine the fault location;

[0023] 3. Through the setting of multiple exhaust devices, the air flow speed in the cooling tower can be accelerated, which can extract hot and humid air, inhale dry cold air, and greatly improve the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an overall schematic diagram of the utility model;

[0025] Figure 2 It is a structural schematic diagram used to reflect the interior of the cooling tower body in the utility model.

[0026] In the figure, 1. cooling tower body; 11. shell; 111. maintenance ladder; 112. cage; 113. permeable enclosure; 114. ventilation slot; 12. spray device; 121. main pipeline; 122. auxiliary pipeline; 123. spray pipeline; 124. sprinkler head; 125. butterfly valve; 13. oblique staggered filler; 14. water collecting tank; 15. bracket; 16. water baffle; 2. exhaust device; 21. air duct; 22. motor; 23. impeller; 24. fan cover. DETAILED DESCRIPTION

[0027] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0028] The same parts are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the attached Figure 1 In the description of this specification, the words "bottom" and "top", "inside" and "outside" refer to directions toward or away from a particular component geometry, respectively. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this specification, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0029] Example:

[0030] like Figure 1-2As shown, a cooling tower for facilitating the maintenance of a chiller comprises a cooling tower body 1 and an exhaust device 2, wherein the exhaust device 2 is arranged at the top of the cooling tower body 1, the cooling tower body 1 is assembled from a shell 11, a spray device 12, an obliquely staggered filler 13, and a water collecting tank 14, the spray device 12 comprises a main pipeline 121, a secondary pipeline 122, a spray pipeline 123, a spray head 124, and a butterfly valve 125, the main pipeline 121 is arranged at the middle position of the top of the shell 11, the main pipeline A plurality of liquid outlets and through holes are arranged on the main pipe 121, and a spray pipe 123 is arranged in parallel in the plurality of through holes, and a spray head 124 is arranged at both ends of the spray pipe 123. A secondary pipe 122 is arranged above the main pipe 121, and a liquid inlet corresponding to the liquid outlet at the top of the main pipe 121 is arranged at the bottom end of the secondary pipe 122. The plurality of liquid outlets and liquid inlets are connected through a maintenance pipe, and butterfly valves 125 are arranged at both ends of the main pipe 121 that contact with the maintenance pipe. A water baffle 16 is provided at the top of the spray device 12, a water collecting tank 14 is provided at the inner bottom end of the shell 11, a through hole corresponding to the water outlet of the shell 11 is provided on one side of the water collecting tank 14, the through hole of the water collecting tank 14 is connected to the circulation pump through a pipeline, a bracket 15 is provided at the top periphery of the water collecting tank 14, and an oblique staggered filler 13 is provided in the bracket 15. The main function of maintenance without stopping the machine is realized by the cooperation of multiple butterfly valves 125 on the main pipeline 121 and the auxiliary pipeline 122. In general, In this case, the cooling water with waste heat in the spray device 12 enters the spray head 124 through the main pipe 121. If one or more of the spray heads 124 malfunctions due to blockage or other problems, the butterfly valves 125 at both ends of the spray head 124 can be closed, and the cooling water will pass through the secondary pipe 122. The shutdown of a single or a few spray heads 124 has limited impact on the cooling effect of the device, and the machines in the factory or shopping mall that rely on cooling towers to dissipate heat do not need to be shut down, which can effectively improve production efficiency and practicality.

[0031] like Figure 1-2As shown, the exhaust device 2 is provided with multiple, and the exhaust device 2 includes a wind tube 21, a motor 22, an impeller 23 and a fan cover 24. The wind tube 21 is fixedly connected to the top of the shell 11, and the fan cover 24 is arranged on the periphery of the top of the wind tube 21. The impeller 23 is coaxially arranged in the wind tube 21, and the impeller 23 is sleeved on the rotating shaft of the motor 22. The motor 22 is arranged on the top of the water baffle 16. A maintenance ladder 111 is arranged on one side of the shell 11, and a cage 112 is arranged on the top of the maintenance ladder 111. A permeable enclosure 113 is arranged on the periphery of the top of the shell 11. A plurality of ventilation slots 114 are provided under the side panels, a water inlet and a water outlet are provided on one side of the shell 11, and the main pipeline 121 is connected with the circulation pump through the water inlet. The exhaust device 2 can be said to be the core of the cooling tower, which can accelerate the air flow inside the cooling tower through the fan, extract the hot and humid air from the wind tube 21 to the outside, and draw the dry and cold air from the outside into the inside through the ventilation slots 114 at the bottom of the shell 11, thereby accelerating the heat exchange efficiency. The permeable enclosure 113 arranged near the fan will not affect the heat dissipation efficiency of the fan, but also provide effective protection for maintenance workers. The guard cage 112 arranged on the ladder can further improve safety.

[0032] Specific implementation process:

[0033] When the cooling tower starts to operate, the exhaust device 2 is started, and the motor 22 drives the impeller 23 to rotate, continuously sucking in air from the ventilation slot 114 at the lower end of the shell 11 and extracting it from the outlet of the wind tube 21. After the cooling water with waste heat is transported to the main line through the circulation pump, it is input into the spray pipeline through a plurality of through holes arranged on the main line, and then the cooling water with waste heat is sprayed through the spray head 124 arranged on the spray pipeline. Part of the water evaporates into water vapor, and the other part falls along the oblique staggered filler 13. In this process, it fully contacts with the filler and the air, exchanges heat, and the cooling water with reduced temperature falls into the water collecting tank 14, and is sucked out again by the circulation pump through the pipe arranged at the bottom of the water collecting tank 14, while the waste heat is discharged from the cooling tower by the exhaust device 2 through the hot and humid air. When the heat dissipation is completed, when the spray head 1 When a fault occurs or the spray pipe is blocked, temporarily close the exhaust device 2 and open the shell 11 of the cooling tower. Since a plurality of butterfly valves 125 are arranged on the main pipe, after closing the butterfly valves 125 at both ends of the faulty spray head 124, the faulty spray head 124 will no longer flow water. At this time, it can be disassembled for maintenance and the pipe can be unblocked. The cooling water with waste heat is blocked by the butterfly valve 125 and flows from the top valve auxiliary pipe to each unsealed spray head 124. The cooling tower can still keep working, and the temperature of the cooling water carrying waste heat will not exceed 40°C, which is harmless to the maintenance workers. After the maintenance is completed, open the butterfly valve 125. If the spray head 124 and the spray pipe 123 return to normal, reopen the butterfly valve 125, close the shell 11, reopen the exhaust device 2, and the cooling tower can be repaired without stopping.

[0034] In the embodiments disclosed in the present invention, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "connect" can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the embodiments disclosed in the present invention can be understood according to specific circumstances.

[0035] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A cooling tower for facilitating the maintenance of a chiller, comprising a cooling tower body (1) and an exhaust device (2), characterized in that: The exhaust device (2) is arranged at the top of the cooling tower body (1); the cooling tower body (1) is assembled from a shell (11), a spray device (12), an obliquely staggered filler (13), and a water collecting tank (14); the spray device (12) comprises a main pipeline (121), a secondary pipeline (122), a spray pipeline (123), a spray head (124), and a butterfly valve (125); The main pipeline (121) is arranged at a middle position at the top end of the shell (11); a plurality of liquid outlets and through holes are arranged on the main pipeline (121); spray pipelines (123) are arranged in parallel in the plurality of through holes; spray heads (124) are arranged at both ends of the spray pipeline (123); a secondary pipeline (122) is arranged above the main pipeline (121); a liquid inlet corresponding to the liquid outlet at the top end of the main pipeline (121) is arranged at the bottom end of the secondary pipeline (122); the plurality of liquid outlets and liquid inlets are connected via a maintenance pipeline; and butterfly valves (125) are arranged at both ends of the main pipeline (121) that are in contact with the maintenance pipeline.

2. A cooling tower for facilitating the maintenance of a chiller according to claim 1, characterized in that: A maintenance ladder (111) is provided on one side of the shell (11), a protective cage (112) is provided at the top of the maintenance ladder (111), a permeable enclosure (113) is provided at the periphery of the top of the shell (11), a plurality of ventilation slots (114) are provided below the side plate of the shell (11), a water inlet and a water outlet are provided on one side of the shell (11), and the main pipeline (121) is connected to the circulation pump through the water inlet.

3. A cooling tower for facilitating the maintenance of a chiller according to claim 2, characterized in that: A water collecting trough (14) is provided at the inner bottom end of the shell (11), a through hole corresponding to the water outlet of the shell (11) is provided on one side of the water collecting trough (14), and the through hole of the water collecting trough (14) is connected to a circulation pump through a pipeline.

4. A cooling tower for facilitating the maintenance of a chiller according to claim 3, characterized in that: A bracket (15) is arranged at the periphery of the top end of the water collecting tank (14), and an obliquely staggered filler (13) is arranged in the bracket (15).

5. A cooling tower for facilitating the maintenance of a chiller according to claim 1, characterized in that: A water baffle (16) is provided at the top of the spray device (12).

6. A cooling tower for facilitating the maintenance of a chiller according to claim 1, characterized in that: The exhaust device (2) is provided with a plurality of devices, and the exhaust device (2) comprises a wind tube (21), a motor (22), an impeller (23) and a fan cover (24). The wind tube (21) is fixedly connected to the top end of the housing (11). The fan cover (24) is provided on the periphery of the top end of the wind tube (21). The wind tube (21) is coaxially provided with an impeller (23). The impeller (23) is sleeved on the rotating shaft of the motor (22). The motor (22) is provided at the top end of the water baffle (16).

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