A container type counter flow closed cooling tower system

Abstract

The application relates to a container type counter-flow closed cooling tower system and belongs to the technical field of cooling equipment. The system comprises a container box body, shallow layer water tanks are arranged in the box body from bottom to top, a multistage guide plate assembly, filler, heat exchange pipe bundles, a spraying system, a water collector and a fan assembly are arranged in the box body. The integrated shallow layer water tank is provided with a water collecting hopper formed by an inclined bottom plate and a submersible pump, low water level emptying prevention is realized, the pipe box type heat exchange pipe bundle realizes medium reversing through a built-in return cavity in the pipe box, external U-shaped elbows are omitted, the pipe row spacing is reduced, the unit volume heat exchange area is improved, the guide plate assembly considers water splash prevention and uniform air inlet, the spraying system adopts a dense nozzle array and a primary-secondary pipe structure, uniform spraying in a short spraying distance is ensured, and the fan adopts a draft tube-free EC axial flow fan, installation space is saved. The application can realize efficient and stable cooling in the limited height of a standard container, has the characteristics of high integration, good cooling effect and reliable operation, and is suitable for various temporary cooling scenes.

Description

Technical Field

[0001] This application relates to the field of cooling equipment technology, and in particular to a containerized counter-flow closed cooling tower system. Background Technology

[0002] Closed-circuit cooling towers are widely used in data centers, power electronics, precision manufacturing, petrochemicals, and temporary engineering cooling due to their closed-loop cooling medium circulation, resistance to external pollution, water and energy conservation, and stable operation. With the increasing demand for modular industrial equipment, mobile operation, and rapid emergency deployment, integrating closed-circuit cooling towers into standard containers for integrated transportation, rapid installation, and plug-and-play on-site has become an important industry trend.

[0003] Traditional counter-flow closed-loop cooling towers have a relatively large structure. Their components, including fans, water collectors, spray systems, heat exchange tube bundles, packing, rain zones, and water tanks, are arranged sequentially from top to bottom, resulting in an overall height significantly exceeding the usable internal height of a standard shipping container. Simply reducing the size of these components to fit the container space can easily lead to turbulent airflow within the tower, uneven air intake, and reduced heat exchange efficiency. Insufficient spray distance can cause uneven coverage, affecting cooling performance. The traditional heat exchange tube bundle's zigzag structure occupies a large space, resulting in insufficient heat exchange capacity within a limited area. Conventional fans require ductwork, further increasing height. Low water levels in the water tank can easily cause the spray pump to cavitate, leading to poor system stability. Furthermore, traditional cooling towers are poorly compatible with shipping containers, making it difficult to simultaneously meet the sealing and protection requirements during transportation and the high-efficiency air intake and exhaust needs during operation.

[0004] Existing counterflow closed-loop cooling towers are limited by structural layout, space utilization and operational reliability, making them unsuitable for installation and use within standard shipping containers and unable to meet the demand for efficient and stable cooling in mobile and rapid deployment scenarios. Summary of the Invention

[0005] To improve the space utilization of a counter-flow closed-circuit cooling tower system while ensuring good cooling performance, this application provides a containerized counter-flow closed-circuit cooling tower system.

[0006] This application provides a containerized counter-flow closed-loop cooling tower system, which adopts the following technical solution: A containerized counter-flow closed-loop cooling tower system includes a container body. From bottom to top, the container body contains a water tank, a flow guiding assembly, packing material, a heat exchange tube bundle, a spray device, a water collector, and a fan assembly. The heat exchange tube bundle includes multiple rows of straight heat exchange tubes and is equipped with a tube box structure. The heat exchange tube bundle is divided into multiple sequentially connected tube passes, with adjacent tube passes connected to the tube box structure. The tube box structure has a reversing cavity inside, which connects the internal flow channels of adjacent tube passes, enabling the cooling medium to flow in reverse direction between adjacent tube passes. The side walls of the container body are equipped with an openable and closable air inlet mechanism, and the top plate of the container body is equipped with an openable and closable exhaust mechanism.

[0007] By adopting the above technical solution, the entire cooling tower system is integrated within a standard container. It can be fully adapted to standard containers for overall hoisting, modular transportation, and rapid deployment in emergency scenarios. There is no need for complex on-site component assembly and pipeline connection, which significantly shortens the on-site commissioning cycle. The structural design of the tube box with built-in reversal cavity can realize the smooth reversal of the cooling medium between adjacent tubes. There is no need to set up connecting elbows on the outside of the heat exchange tubes, which effectively compresses the horizontal and vertical installation space of the heat exchange tube bundle. More heat exchange pipelines can be arranged within the limited volume of the container to ensure sufficient heat exchange area. At the same time, the bottom-up hierarchical layout, combined with the side wall air intake and top exhaust structure design, is in complete agreement with the gas-liquid countercurrent heat exchange principle of the counterflow closed cooling tower. It straightens the heat exchange path of the rising airflow and the falling spray water flow in the tower, allowing the gas and liquid phases to fully contact. It simultaneously improves the system integration and cooling heat exchange efficiency within a limited space, ensuring efficient and stable operation of the system under all operating conditions.

[0008] Optionally, the adjacent rows of heat exchange tubes in the heat exchange tube bundle are arranged in a cross pattern; the tube box structure includes a branch tube box connected to the first end tube, a collector tube box connected to the last end tube, and a bend tube box located between adjacent tubes, wherein the foldback cavity is located inside the bend tube box.

[0009] By adopting the above technical solution, the cross-arrangement of adjacent heat exchange tubes can guide the rising airflow in the tower to form continuous turbulence between the tube rows, breaking the laminar boundary layer formed when the airflow contacts the water film on the outer wall of the heat exchange tubes, enhancing convective heat transfer, and increasing the heat transfer per unit space. At the same time, the cross-arrangement structure can make the airflow distribution between the tube rows more uniform, avoiding dead zones where airflow stagnates. The three-section layout of the distribution tube box, the bend tube box, and the collector tube box precisely defines the setting position of the return cavity. The distribution tube box can evenly distribute the incoming cooling medium to each of the first-end heat exchange tubes, ensuring that the medium flow rate of each heat exchange tube is uniform and the heat transfer load is consistent. The return cavity in the bend tube box provides a smooth flow path for the medium to change direction, reducing the local flow resistance of the medium to change direction and reducing the energy consumption during the medium flow process. The collector tube box can collect the medium that has completed heat exchange and output it smoothly, avoiding the medium stagnation at the end of the tube, ensuring that the medium flow in the entire heat exchange tube bundle is stable and uniform throughout, and improving the consistency and operational stability of the heat exchange process.

[0010] Optionally, the bottom of the water tank is provided with an inclined base plate that slopes from the periphery to the center. The lowest point of the inclined base plate forms a water collection hopper, and a submersible pump is installed in the water collection hopper. The outlet of the submersible pump is connected to the main water supply pipe of the spray device.

[0011] By adopting the above technical solution, the bottom plate of the water tank, which slopes towards the center, can guide the cooling water in the tank to continuously converge towards the lowest water collection hopper in the center, ensuring that the cooling water in the tank can be fully utilized and reducing stagnant water residue in the tank. The sunken structure of the water collection hopper can still provide sufficient submersion depth for the inlet of the submersible pump under extremely low water level conditions, preventing the inlet from being exposed and sucking in air, and ensuring that the submersible pump continuously and stably delivers a pressure-stabilized water flow to the spray device. The submersible pump is directly installed in the water collection hopper, which reduces water suction resistance and reduces water intake energy consumption. At the same time, the outlet is directly connected to the main water supply pipe of the spray device, with a short water supply path and low pressure loss, which can ensure stable pressure of the spray water supply and improve the operational stability of the spray system.

[0012] Optionally, the multi-stage curved guide vane assembly is arranged symmetrically about the vertical central axis of the container body. The curved guide vane has a continuous arc structure. The tops of multiple sets of curved guide vanes are flush with the same horizontal plane. The tops of the two innermost symmetrical curved guide vanes meet at the vertical central axis of the container body. The bottom of the curved guide vane extends towards the air intake mechanism on the side wall of the container body.

[0013] By adopting the above technical solution, the multi-stage curved guide plate adopts a continuous and smooth arc-shaped curved surface structure, which can reduce the height of the rain zone and guide the incoming airflow to smoothly turn along the curved surface. Compared with the traditional straight plate guide structure, it significantly reduces the local resistance of airflow turning, reduces the energy consumption of dead zone eddies, and improves airflow delivery efficiency. Multiple sets of guide plates are arranged sequentially along the air inlet height direction. The independent guide air ducts formed by adjacent guide plates can divide the airflow entering from the air inlet mechanism into multiple independent airflow bundles, avoiding mutual interference between airflows and ensuring the stability of airflow delivery. The design of consistent outlet width and progressively increasing inlet height of each guide air duct ensures that the flow cross section of each air duct forms a precise flow resistance match along the airflow direction, keeping the airflow velocity and airflow volume output by each air duct consistent. This achieves uniform airflow throughout the entire cross section of the heat exchange packing, avoiding localized excessively high or low airflow velocities, and ensuring full and uniform contact between the airflow and the sprayed water in the packing. Under the premise of reducing the height of the rain zone, it achieves the optimal airflow organization effect and improves the overall heat exchange efficiency of the system.

[0014] Optionally, the multi-stage curved guide vane assembly is arranged symmetrically about the vertical central axis of the container body. The curved guide vane has a continuous arc structure. The tops of multiple sets of curved guide vanes are flush with the same horizontal plane. The tops of the two innermost symmetrical curved guide vanes meet at the vertical central axis of the container body. The bottom of the curved guide vane extends towards the air intake mechanism on the side wall of the container body.

[0015] By adopting the above technical solution, the guide plate assembly is arranged symmetrically on both sides of the vertical central axis of the box, which can make the airflow entering from the air inlet mechanism on both sides of the box form a completely symmetrical flow field. This ensures that the airflow volume and velocity on both sides of the box are completely consistent, avoiding the airflow deviation and uneven distribution inside the tower caused by unilateral airflow deviation. This ensures the stability and uniformity of the overall flow field inside the tower. The continuous arc structure and the design of the top being flush with the same horizontal plane can make the airflow output from each air duct diffuse evenly at the same height of the packing cross section, ensuring the uniformity of airflow at the bottom of the packing. The bottom end of the guide plate extends towards the air inlet mechanism, which can directly receive the airflow entering from the air inlet mechanism, avoiding the formation of vortices at the air inlet, improving the airflow introduction efficiency, and forming a smooth airflow guiding channel from the air inlet to the packing cross section without sharp corners. This further reduces the flow resistance of the airflow, reduces energy loss, further optimizes the airflow organization effect inside the tower, and improves the uniformity and stability of the heat exchange process.

[0016] Optionally, the lowest intersection line of the curved guide vane is located inside the container body, and the shape of the intersection line is high in the middle and low at both ends.

[0017] By adopting the above technical solution, the lowest intersection line and the lowest points at both ends of the intersection line of the baffle are set inside the container body. This allows the arc-shaped structure of the baffle to form an inward-facing water-blocking eaves structure at the air inlet. This effectively blocks and guides the spray water droplets flowing towards the air inlet with the airflow. The spray water adhering to the inner wall of the baffle flows continuously downward along the inner wall of the arc-shaped baffle under the action of gravity. When it reaches the lowest intersection line, it flows to the side walls at both ends and finally flows back into the water tank at the bottom of the container, effectively preventing spray water from reaching the container body. Water splashes out of the enclosure with the airflow, reducing cooling water loss and keeping the surrounding environment dry and clean. It also effectively prevents the sprayed water from accumulating in the middle of the guide plate intersection line, thus avoiding increasing the gravity load on the guide plate. This structure does not require an additional independent water baffle component; the water-blocking and splash-proof function is achieved directly through the structural design of the guide plate itself. It does not occupy additional installation space inside the enclosure, nor does it increase airflow resistance. While ensuring excellent splash-proof effect, it also takes into account the space utilization and airflow efficiency inside the enclosure.

[0018] Optionally, the spraying device includes multiple sets of spray nozzles arranged in an array, with the spray coverage of adjacent spray nozzles overlapping each other, so that the sprayed water forms a continuous and uniform water film covering the top surface of the heat exchange tube bundle.

[0019] By adopting the above technical solution, the spray device uses multiple sets of spray nozzles arranged in a regular array, which can form a full-coverage spray area on the entire top surface of the heat exchange tube bundle, with no spray dead corners. The design of overlapping spray coverage areas of adjacent spray nozzles can effectively compensate for the problem of insufficient water volume in the edge area of ​​a single nozzle, ensuring that the spray water volume at every position on the top surface of the heat exchange tube bundle is uniform. Even under the condition of short spray distance due to the limited height of the container, a continuous, uniform, and consistent water film can still be formed on the entire top surface of the heat exchange tube bundle, so that the outer wall of the heat exchange tube bundle is in full and uniform contact with the spray water. This ensures a stable and efficient heat exchange between the cooling medium inside the heat exchange tube bundle and the spray water and rising airflow outside the tubes, greatly improving the gas-liquid heat exchange efficiency and ensuring a stable and uniform heat exchange effect of the heat exchange tube bundle.

[0020] Optionally, the spraying device further includes a spraying main pipe and spraying sub-pipes arranged in parallel, wherein the diameter of the spraying main pipe is larger than the diameter of the spraying sub-pipes; the spraying nozzles are respectively installed on the spraying main pipe and the spraying sub-pipes, and are arranged alternately in an array along the length of the spraying pipes; the spraying nozzles on the spraying main pipe and the spraying sub-pipes are respectively adapted to the flow range of the corresponding spraying pipes.

[0021] By adopting the above technical solution, the parallel configuration of the main spray pipe and the spray sub-pipes allows for flexible switching between single-pipe water supply and dual-pipe simultaneous water supply modes based on actual system cooling load changes. This adapts to different spray flow requirements under varying loads. The main spray pipe has a larger diameter than the spray sub-pipes, enabling it to meet both high-load and low-load spray demands, thus avoiding issues like insufficient nozzle pressure, poor atomization, and uneven spraying that can occur with single-pipe systems. The spray nozzles extend along the length of the spray pipe. The nozzles are arranged alternately in an array on two pipelines, allowing the spray areas of the nozzles on different pipelines to complement each other. Whether operating in single-pipeline or dual-pipeline mode, a uniform spray covering the top surface of the heat exchange tube bundle can be formed. With the help of dedicated nozzles adapted to the flow range of the corresponding spray pipes, the nozzles can maintain the best atomization effect and spray uniformity under different flow conditions, which greatly expands the load adaptability range of the system. At the same time, under low load conditions, only the sub-pipes can be turned on to operate, effectively reducing the energy consumption of spray water supply and achieving energy-saving and stable operation of the system.

[0022] Optionally, the fan assembly includes multiple EC axial flow fans, which are arranged in a matrix at the exhaust mechanism on the top of the container body.

[0023] By adopting the above technical solution, multiple EC axial flow fans arranged in a matrix eliminate the need for the installation height of the duct required by traditional fans, significantly reducing the height of the top of the tower. The EC axial flow fans can achieve stepless speed regulation, flexibly adjusting the number and speed of the fans according to the cooling load, adapting to the air volume requirements of different working conditions. Compared with traditional fans, the energy consumption is greatly reduced. The matrix arrangement ensures uniform exhaust in the cross section of the tower, further optimizing the airflow organization in the tower and improving the uniformity of heat exchange in the system.

[0024] Optionally, the air intake mechanism is a 180° rotating door, and the air exhaust mechanism is a 270° rotating window. The air intake mechanism is equipped with an operation panel, which is used to control the start and stop of the cooling tower and the opening and closing of the air intake and exhaust mechanisms.

[0025] By adopting the above technical solution, a 180° rotating air inlet door is used. After opening, the door can rotate 180° outward around the bottom pivot axis, completely adhering to the outer wall of the container. This completely eliminates the door's obstruction of the air inlet channel, maximizing the air inlet area and significantly reducing air inlet resistance. Simultaneously, the door has no outward protrusions after adhering to the wall, avoiding bumps and knocks during on-site operations, and ensuring stable operation without shaking or abnormal noise. A 270° rotating door is also used. The rotating exhaust window, when opened, can rotate 270° downwards around the side pivot, completely adhering to the outer wall of the container. This eliminates any obstruction of the top exhaust duct, maximizing the exhaust area and significantly reducing exhaust resistance. Furthermore, the window does not increase the overall height of the container when attached to the wall. When closed, it forms a fully sealed structure with the container top, meeting both transportation protection and operational ventilation requirements. The integrated control panel on the air intake mechanism enables centralized control of the cooling tower system's start / stop and the opening / closing of the air intake and exhaust mechanisms. This eliminates the need for a separate electrical control cabinet, further enhancing system integration and facilitating rapid equipment debugging and operation control by on-site operators, making it suitable for temporary deployments and rapid commissioning scenarios.

[0026] In summary, this application includes at least one of the following beneficial technical effects: By optimizing the positions of each component, the counter-flow closed cooling tower can be completely installed in a standard container, taking into account both the sealing and protection requirements for transportation and the ventilation requirements for operation, thus achieving modular transportation, rapid deployment in emergency scenarios, and significantly shortening the on-site commissioning cycle. Through the synergistic optimization of the entire process, including uniform airflow guidance, staggered heat exchange, uniform spraying, and stable medium reversal, the gas-liquid countercurrent heat exchange path in the tower is streamlined, heat exchange blind spots are eliminated, and the system's heat exchange efficiency and cooling stability under all operating conditions are significantly improved. The operating conditions of the spray and fan can be flexibly adjusted according to cooling needs, which greatly reduces operating energy consumption; the control design and anti-cavitation water supply structure simultaneously improve the system's operational reliability and ease of maintenance. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of a containerized counter-flow closed cooling tower system.

[0028] Figure 2 yes Figure 1 Schematic diagram of the structure of the medium water tank.

[0029] Figure 3 yes Figure 1 Schematic diagram of the relationship between the central flow guide component and the water tank.

[0030] Figure 4 yes Figure 3 A schematic diagram of the curved surface guide vane, with the dashed lines representing the intersection lines.

[0031] Figure 5 yesFigure 1 A schematic diagram of the heat exchanger tube bundle.

[0032] Figure 6 yes Figure 1 A schematic diagram of the structure of the spray device.

[0033] Figure 7 yes Figure 1 A schematic diagram showing the positional relationship of the components of the medium-sized wind turbine.

[0034] Figure 8 yes Figure 1 A schematic diagram showing the positional relationship between the central air intake component and the exhaust component.

[0035] Reference numerals: 1. Container body; 2. Water tank; 21. Inclined bottom plate; 22. Submersible pump; 3. Flow guide assembly; 31. Curved flow guide plate; 4. Packing material; 5. Heat exchange tube bundle; 51. Heat exchange tube; 52. Tube box structure; 521. Diversion tube box; 522. Combination tube box; 523. Turning tube box; 524. Reversal chamber; 6. Spraying device; 61. Spray nozzle; 62. Spray main pipe; 63. Spray sub-pipe; 7. Water collector; 8. Fan assembly; 81. Axial flow fan; 9. Air inlet mechanism; 91. Air outlet mechanism; 92. Air inlet door; 93. Exhaust skylight; 94. Control panel. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1 -Appendix Figure 8 This application will be described in further detail.

[0037] This application discloses a containerized counter-flow closed-loop cooling tower system. (Refer to...) Figure 1 A containerized counter-flow closed cooling tower system includes a container body 1. Inside the container body 1, from bottom to top, there are a water tank 2, a flow guiding component 3, packing material 4, a heat exchange tube bundle 5, a spray device 6, a water collector 7, and a fan assembly 8. The opposite side walls of the container body 1 are provided with openable and closable air inlet mechanisms 9, and the top plate of the container body is provided with an openable and closable exhaust mechanism 91. Both the air inlet mechanism 9 and the exhaust mechanism 91 are connected to the internal cavity of the container body, forming a complete ventilation path for counter-flow heat exchange.

[0038] Reference Figure 1 and Figure 2 Water tank 2 is an integrated shallow water tank, which is fixedly installed at the bottom of the inner cavity of container body 1. The bottom of water tank 2 is provided with an inclined bottom plate 21 that slopes from the periphery to the center. The lowest point of the inclined bottom plate 21 forms a water collection hopper. A submersible pump 22 is fixedly installed on the bottom surface of water tank 2. The submersible pump 22 is used to supply water to the spray device 6. It can achieve the anti-cavitation effect under low water level conditions and ensure the continuous and stable spray water supply of the system.

[0039] ReferenceFigure 3 and Figure 4 The flow guiding component 3 is a multi-stage curved surface flow guiding plate assembly, fixedly installed above the water tank 2 and on the air inlet side of the packing 4. It includes multiple sets of curved surface flow guiding plates 31 arranged sequentially along the air inlet height direction. Adjacent curved surface flow guiding plates 31 enclose and form independent flow guiding ducts. The outlet width of each flow guiding duct is the same, and the inlet height of each flow guiding duct increases sequentially from top to bottom. The multi-stage curved surface flow guiding plate 31 assembly is symmetrically arranged on the left and right sides with the vertical central axis of the container body 1 as the center. The curved surface flow guiding plate 31 has a continuous arc structure. The tops of multiple sets of curved surface flow guiding plates 31 are flush with the same horizontal plane. The tops of the two symmetrical innermost curved surface flow guiding plates 31 are... At the vertical central axis of the container, the bottom end of the curved guide plate 31 extends towards the air inlet mechanism 9 on the side wall of the container. The lowest intersection line of the curved guide plate 31 is located inside the container body 1, and the shape of the intersection line is high in the middle and low at both ends. The intersection line of the curved guide plate 31 is set close to the air inlet mechanism 9 on the side wall, which can optimize the airflow organization inside the container while preventing the spray water from splashing outward, and realize uniform air intake of the heat exchange components. The packing 4 is fixedly installed above the guide assembly 3 to provide contact space for the heat exchange between the airflow and the spray water. The rising airflow after being uniformly circulated by the guide assembly 3 can pass through the packing 4 evenly and complete the heat exchange with the falling spray water.

[0040] Reference Figure 1 and Figure 5 The heat exchange tube bundle 5 is a tube box type heat exchange tube bundle, which is fixedly installed above the packing 4. It includes multiple rows of straight heat exchange tubes 51, with adjacent rows of heat exchange tubes 51 arranged in a cross pattern. The heat exchange tube bundle 5 is equipped with a tube box structure 52, which is divided into multiple tube passes connected in series. The heat exchange tubes 51 of adjacent tube passes are all connected to the tube box structure 52. The tube box structure 52 includes a branch tube box 521 connected to the first tube pass, a collector tube box 522 connected to the last tube pass, and a turning tube box 523 located between adjacent tube passes. The turning tube box 523 has a foldback cavity 524 inside, which connects the internal flow channels of the heat exchange tubes 51 of adjacent tube passes, realizing the 180° foldback flow of the cooling medium between adjacent tube passes.

[0041] Reference Figure 1 and Figure 6The spray device 6 is fixedly installed above the heat exchange tube bundle 5, including multiple sets of spray nozzles 61 arranged in an array. The spray coverage of adjacent spray nozzles 61 overlaps with each other, so that the spray water forms a continuous and uniform water film covering the top surface of the heat exchange tube bundle 5. The spray device 6 also includes a spray main pipe 62 and a spray sub-pipe 63 arranged in parallel. The diameter of the spray main pipe 62 is larger than the diameter of the spray sub-pipe 63. Several spray nozzles 61 are respectively installed on the spray main pipe 62 and the spray sub-pipe 63. Several spray nozzles 61 on the same spray pipe are arranged in an alternating array along the length of the spray pipe. The spray nozzles 61 on the spray main pipe 62 and the spray sub-pipe 63 are respectively adapted to the flow range of the corresponding spray pipe, forming an adaptive main-sub-pipe structure, which can ensure a uniform spraying effect within a short spray distance.

[0042] Reference Figure 1 and Figure 7 The water collector 7 is fixedly installed above the spray device 6 to intercept the spray water droplets carried in the rising airflow and reduce the loss of cooling water drift. The fan assembly 8 is fixedly installed above the water collector 7 at the exhaust mechanism 91 on the top of the container body 1. It includes multiple EC axial flow fans 81. The multiple EC axial flow fans 81 are arranged in a matrix and can flexibly adjust the operating status according to the cooling load to match the air volume requirements of different operating conditions of the system.

[0043] Reference Figure 1 and Figure 8 The air intake mechanism 9 on the side wall of the container body 1 is a 180° rotating door 92, and the exhaust mechanism 91 on the top plate of the container body is a 270° rotating window 93. An integrated operation panel 94 is provided on the air intake mechanism 9. The integrated operation panel 94 is used to control the start and stop of the cooling tower and the opening and closing of the air intake mechanism 9 and the exhaust mechanism 91, so as to realize the integrated centralized control of the system without the need to set up an additional independent control cabinet, further improving the integration of the system.

[0044] The implementation principle of a containerized counter-flow closed cooling tower system according to an embodiment of this application is as follows: When the system is running, the air inlet mechanism 9 and the exhaust mechanism 91 are first opened through the integrated operation panel 94, and the fan assembly 8 is started. A negative pressure airflow from bottom to top is formed inside the container body 1. Outside air enters the container body through the air inlet mechanism 9 on the side wall, and after being uniformly rectified by the flow guide assembly 3, it passes evenly from bottom to top through the packing 4 and heat exchange tube bundle 5. After water droplets are intercepted by the water collector 7, it is finally discharged from the exhaust mechanism 91 at the top; at the same time, the submersible pump 22 will... Cooling water in water tank 2 is transported to spray device 6. The cooling water is sprayed evenly onto the surface of heat exchange tube bundle 5 below through spray nozzle 61, where it exchanges heat with the medium to be cooled in heat exchange tube bundle 5. After heat exchange, the cooling water continues to fall into packing 4, where it completes a secondary heat exchange with the rising airflow from bottom to top, and finally falls back into water tank 2 at the bottom of the tank for recycling. The medium to be cooled enters heat exchange tube bundle 5 from distribution tube box 521, and after being cooled by multiple tube passes and recirculation, it is output from collection tube box 522, completing a complete cooling cycle.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A containerized counter-flow closed-loop cooling tower system, comprising a container body (1), characterized in that, The container body (1) is provided with a water tank (2), a flow guiding component (3), a packing (4), a heat exchange tube bundle (5), a spray device (6), a water collector (7), and a fan assembly (8) from bottom to top. The heat exchange tube bundle (5) includes multiple rows of straight heat exchange tubes (51). The heat exchange tube bundle (5) is equipped with a tube box structure (52). The heat exchange tube bundle (5) is divided into multiple tube passes connected in series. The heat exchange tubes (51) of adjacent tube passes are all connected to the tube box structure (52). The tube box structure (52) is provided with a folding cavity (524). The folding cavity (524) connects the internal flow channels of the heat exchange tubes (51) of adjacent tube passes, realizing the reversal of the flow of the cooling medium between adjacent tube passes. The side wall of the container body (1) is provided with an openable and closable air inlet mechanism (9), and the top plate of the container body (1) is provided with an openable and closable exhaust mechanism (91).

2. The containerized counter-flow closed-loop cooling tower system according to claim 1, characterized in that: The adjacent rows of heat exchange tubes (51) of the heat exchange tube bundle (5) are arranged in a cross pattern; the tube box structure (52) includes a branch tube box (521) connected to the first end tube, a collector tube box (522) connected to the last end tube, and a turning tube box (523) located between adjacent tubes, and the folding cavity (524) is located in the turning tube box (523).

3. The containerized counter-flow closed-loop cooling tower system according to claim 1, characterized in that: The bottom of the water tank (2) is provided with an inclined bottom plate (21) that slopes from the periphery to the center. The lowest point of the inclined bottom plate (21) forms a water collection hopper, and a submersible pump (22) is provided in the water collection hopper. The outlet of the submersible pump (22) is connected to the main water supply pipe of the spray device (6).

4. The containerized counter-flow closed-loop cooling tower system according to claim 1, characterized in that: The flow guiding component (3) is a multi-level curved flow guiding plate (31) component, including multiple sets of curved flow guiding plates (31) arranged sequentially along the air inlet height direction, and adjacent curved flow guiding plates (31) enclose each other to form an independent flow guiding duct; the air outlet width of each flow guiding duct is consistent, and the air inlet height of each flow guiding duct increases sequentially from top to bottom.

5. A containerized counter-flow closed-loop cooling tower system according to claim 4, characterized in that: The multi-level curved guide plate (31) assembly is arranged symmetrically on the left and right with the vertical central axis of the container body (1) as the center. The curved guide plate (31) is a continuous arc structure. The tops of multiple sets of curved guide plates (31) are flush with the same horizontal plane. The tops of the two symmetrical innermost curved guide plates (31) meet at the vertical central axis of the container body. The bottom of the curved guide plate (31) extends towards the air intake mechanism (9) on the side wall of the container body.

6. A containerized counter-flow closed-loop cooling tower system according to claim 5, characterized in that: The lowest intersection line of the curved guide plate (31) is located inside the container body (1), and the shape of the intersection line is high in the middle and low at both ends.

7. A containerized counter-flow closed-loop cooling tower system according to claim 1, characterized in that: The spray device (6) includes multiple sets of spray nozzles (61) arranged in an array. The spray coverage of adjacent spray nozzles (61) overlaps with each other, so that the spray water forms a continuous and uniform water film covering the top surface of the heat exchange tube bundle (5).

8. A containerized counter-flow closed-loop cooling tower system according to claim 7, characterized in that: The spray device (6) also includes a spray main pipe (62) and a spray sub-pipe (63) arranged in parallel. The diameter of the spray main pipe (62) is larger than the diameter of the spray sub-pipe (63). The spray nozzles (61) are respectively installed on the spray main pipe (62) and the spray sub-pipe (63) and are arranged in an alternating array along the length of the spray pipe. The spray nozzles (61) on the spray main pipe (62) and the spray sub-pipe (63) are respectively adapted to the flow range of the corresponding spray pipe.

9. A containerized counter-flow closed-loop cooling tower system according to claim 1, characterized in that: The fan assembly (8) includes multiple EC axial flow fans (81), which are arranged in a matrix at the exhaust mechanism (91) on the top of the container body (1).

10. A containerized counter-flow closed-loop cooling tower system according to claim 1, characterized in that: The air intake mechanism (9) is a 180° rotating door (92), the air exhaust mechanism (91) is a 270° rotating window (93), and the air intake mechanism (9) is provided with an operation panel (94). The operation panel (94) is used to control the start and stop of the cooling tower and the opening and closing of the air intake mechanism (9) and the air exhaust mechanism (91).

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