Winding pipe type composite air cooler

Abstract

The application discloses a kind of winding pipe composite air cooler, including vertically arranged shell side cylinder (1), two tube sheets, two tube boxes (2), center cylinder (3), multiple heat exchange pipes (4), multiple spray pipes (5), multiple heat exchange pipes (4) are arranged in shell side cylinder (1) along the axial direction, and are made into multilayer spiral pipe by being spirally wound on the outer periphery of center cylinder (3) from inside to outside, and the both ends of heat exchange pipe (4) are supported on corresponding tube sheet respectively and are communicated with corresponding tube box (2);Multiple spray pipes (5) are arranged in shell side cylinder (1) along the axial direction, and are wound in each layer spiral pipe along the spiral direction of heat exchange pipe (4), the nozzle of the lower end of each spray pipe (5) is inlet (51), the nozzle of the upper end of each spray pipe (5) is outlet (52) with open downward, and outlet (52) is located above spiral pipe, and is arranged along the circumference of shell side cylinder (1) with interval.Compared with prior art, the application can effectively improve heat exchange effect.

Description

Technical Field

[0001] This invention belongs to the field of heat exchanger technology, specifically relating to a wound tube composite air cooler. Background Technology

[0002] Currently, air coolers are frequently used in high-pressure fields such as hydrogenation and hydrocracking, as disclosed in invention patent applications CN202110477804.0 entitled "Hydrogenation Heat Exchange System and Heat Exchange Process Using Multi-Stream Wound Tube Heat Exchanger" (application publication number CN113063309A) and CN202110477790.2 entitled "A Heat Exchange System and Heat Exchange Process for Hydrogenation Process" (application publication number CN113267075A).

[0003] Air coolers are generally classified into dry air coolers and wet air coolers according to their cooling methods. Dry air coolers rely on continuous airflow from fans for cooling, which has drawbacks such as large resistance drop, large equipment size, and the need for multiple units to operate in parallel, thus occupying a large space. Furthermore, the heat exchange efficiency of dry air coolers is not ideal, resulting in high energy consumption (such as metals) and complex piping. Wet air coolers enhance heat exchange through the spraying or atomization of coolant (usually water), achieving better heat exchange efficiency than dry air coolers. However, they are limited in terms of pressure resistance and size, making them difficult to apply in high-pressure fields such as hydrogenation and hydrocracking. In addition, the high-pressure hot gases have a certain degree of corrosiveness, and wet air coolers typically use expensive nickel-based alloys to prevent ammonium salt corrosion, resulting in high costs. Moreover, wet air coolers often use top water spraying, which suffers from uneven spraying, large water volume, and ineffective evaporation of heat exchange tubes, leading to low heat exchange efficiency and high water consumption. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a wound tube composite air cooler that can improve the heat exchange effect, in light of the current state of the prior art.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a wound tube type composite air cooler, comprising:

[0006] The shell-side cylindrical body is vertically arranged, with an air inlet and an air outlet at each of its two ends;

[0007] Two tube sheets are respectively installed on the side wall of the shell-side cylinder, one above the other;

[0008] Two tube boxes are installed on their respective tube sheets;

[0009] The central cylinder is vertically disposed within the shell-side cylinder;

[0010] A plurality of heat exchange tubes are arranged in the shell side cylinder in the axial direction and are spirally wound on the outer periphery of the central cylinder to form a plurality of layers of spiral tubes, and the two ends of the heat exchange tubes are respectively supported on the corresponding tube plates and are connected with the corresponding tube boxes;

[0011] characterized in that it further comprises:

[0012] A plurality of spray pipes are arranged in the shell side cylinder in the axial direction and are wound in the spiral direction of the heat exchange tubes in the layers of spiral tubes, the lower end of each spray pipe is provided with an inlet, and the upper end of each spray pipe is provided with a downwardly open outlet, and the outlet is located above the spiral tube and is arranged in the circumferential direction of the shell side cylinder; meanwhile, a plurality of spray holes are arranged on the wall of each spray pipe, and the spray holes are opposite to the wall of the adjacent heat exchange tube.

[0013] Preferably, the upper end of each spray pipe is connected with a water nozzle capable of spraying water downward.

[0014] In the above scheme, preferably, the bottom of the shell side cylinder is provided with a water collecting tank, and the inlet of the spray pipe is connected with the water collecting tank through a water pump.

[0015] Further, the air inlet is located at the lower end of the shell side cylinder, and the air outlet is located at the upper end of the shell side cylinder.

[0016] In order to improve the utilization rate of water in the water collecting tank, preferably, a water collector is further arranged in the shell side cylinder and above the outlet of the spray pipe, and the water collector has a channel through which the airflow passes upward and collects the water in the airflow. In this way, the consumption of water can be reduced.

[0017] More preferably, the water collector comprises a plurality of vertically arranged and connected water collecting plates, and the plurality of water collecting plates are arranged in the horizontal direction. The channel is formed between the adjacent water collecting plates. Meanwhile, the surface of each water collecting plate is provided with an upwardly extending lip, and the lip and the surface of the water collecting plate form an upwardly open water collecting groove for collecting the water accumulated on the surface above the lip.

[0018] In order to better recover the water in the water collecting groove, further, the water collector further comprises a water collecting groove located in the center of the water collector and extending through the water collecting plates along the arrangement direction of the water collecting plates;

[0019] The water collector is arranged on the outer periphery of the central cylinder, and the water collecting groove is arranged to pass through the central cylinder. The central cylinder is hollow, and the lower end of the central cylinder is connected with the water collecting tank. The wall of the central cylinder opposite to the water collecting groove is provided with a water inlet connected with the water collecting groove.

[0020] In order to ensure the gas-water separation effect and not affect the heat exchange of the air cooler, preferably, the interval distance between the two adjacent water collecting plates is 20-50 mm. When the interval distance is too large, the water carried by the gas cannot be fully recovered, resulting in excessive water consumption. When the interval distance is too small, the resistance is too large, the air volume is too small under the specific power of the fan, the performance of the air cooling is affected, and more spraying water is needed, resulting in waste of water.

[0021] In order to better collect the water in the water collecting groove, preferably, the water collector comprises a plurality of vertically arranged and connected water collecting plates, the plurality of water collecting plates are arranged in a circumferential interval on the periphery of the central cylinder, the plate surfaces of the two adjacent water collecting plates form the above-mentioned channel, the plate surface of each water collecting plate is provided with an upwardly extending lip, the lip and the plate surface of the water collecting plate form a water collecting groove with an upward opening and used for collecting water in the airflow, each water collecting groove extends from the outside to the inside of the plate surface of the water collecting plate to the central cylinder, the inside of the central cylinder is hollow, and the lower end of the central cylinder is connected with the water collecting tank, and the cylinder wall opposite to the water collector is provided with a water inlet connected with the water collecting groove.

[0022] In order to facilitate the water in the water collecting groove to flow to the water collecting tank, preferably, the water collecting groove is inclined downward from the outside to the inside.

[0023] In order to improve the gas-water separation effect and better collect the water, preferably, each water collecting plate is made into a wave-shaped structure from top to bottom, at least one water collecting groove is arranged on the same side plate surface of each water collecting plate, and each water collecting groove is located at the outer protruding part of the plate surface of each water collecting plate.

[0024] In the above-mentioned schemes, the heat exchange pipe can be a smooth pipe. In order to improve the heat exchange effect, preferably, the heat exchange pipe is a corrugated pipe, and has a smooth pipe section with a smooth surface and a corrugated section with corrugated surface, the corrugated section and the smooth pipe section are arranged alternately along the length direction of the heat exchange pipe, and the length of the corrugated section is greater than the length of the smooth pipe section.

[0025] Or, the heat exchange pipe is a finned tube, and has a smooth pipe section with a smooth surface and a finned section with fins, the finned section and the smooth pipe section are arranged alternately along the length direction of the heat exchange pipe, and the length of the finned section is greater than the length of the smooth pipe section.

[0026] Preferably, the above-mentioned two tube plates and two tube boxes form a group, there are at least two groups and they are arranged in a circumferential interval along the shell side cylinder. Of course, there can be only one group, which is designed according to the number of heat exchange pipes.

[0027] Compared with the prior art, the air cooler has the advantages that: by additionally arranging the spray pipes with the spray holes, and by spirally winding the spray pipes in the spiral pipes, the nozzle at the lower end of the spray pipe is the liquid inlet, the nozzle at the upper end of the spray pipe is the liquid outlet, and the liquid outlets are arranged at intervals along the circumferential direction of the shell cylinder and above the spiral pipes, so that when the air cooler works, the cooling liquid is fed into the spray pipes, part of the cooling liquid is sprayed to the adjacent heat exchange pipes through the spray holes, and part of the cooling liquid is sprayed downward from the liquid outlets, so that the heat exchange between the high-temperature heat medium in the heat exchange pipes and the cooling liquid is realized, the circumferentially-interval-arranged liquid outlets can ensure uniform water spraying and stable water spraying amount, and the heat exchange efficiency is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the embodiment one of the present application;

[0029] Figure 2 It is a structural schematic diagram (the cross-sectional area is the water spraying area) between the heat exchange pipes and the spray pipes in the embodiment one of the present application;

[0030] Figure 3 It is Figure 1 the cross-sectional view in A-A direction;

[0031] Figure 4 It is a structural schematic diagram between the water collector and the center cylinder in the embodiment one of the present application;

[0032] Figure 5 It is Figure 4 the top view;

[0033] Figure 6 It is a local structural schematic diagram of the center cylinder in the embodiment one of the present application;

[0034] Figure 7 It is Figure 5 the structural schematic diagram in B direction;

[0035] Figure 8 It is a local structural schematic diagram of the heat exchange pipe in the embodiment one of the present application;

[0036] Figure 9 It is the top view between the water collector and the center cylinder in the embodiment two of the present application. DETAILED DESCRIPTION

[0037] The present application will be further described in detail below with reference to the embodiment and the accompanying drawings.

[0038] Embodiment one:

[0039] As Figures 1 to 8As shown, it is a preferred embodiment one of a winding pipe type composite air cooler of the present application, which comprises a shell side cylinder 1, two tube sheets, two tube boxes 2, a center cylinder 3, a plurality of heat exchange pipes 4, a plurality of spray pipes 5, a water collecting tank 6, a water pump 7, and a water collector 8.

[0040] The shell side cylinder 1 is vertically arranged, has an air inlet 11 at the lower end and an air outlet 12 at the upper end, and a fan is arranged at the air outlet 12 to make the air flow into the shell side cylinder 1 from the air inlet 11 and then discharged from the air outlet 12. The bottom of the shell side cylinder 1 is provided with the water collecting tank 6.

[0041] The two tube sheets are arranged one above the other on the side wall of the shell side cylinder 1; and the two tube boxes 2 are arranged on the respective tube sheets.

[0042] The center cylinder 3 is vertically arranged in the shell side cylinder 1. The inside of the center cylinder 3 is hollow, and the lower end port 31 thereof extends into the water collecting tank 6.

[0043] The plurality of heat exchange pipes 4 are arranged in the shell side cylinder 1 along the axial direction, and are spirally wound on the outer periphery of the center cylinder 3 to form a plurality of layers of spiral pipes. The spacing between adjacent layers of spiral pipes is not less than 4 mm. The two ends of the heat exchange pipes 4 are respectively supported on the respective tube sheets and are in communication with the respective tube boxes 2. In this embodiment, the heat exchange pipes 4 are corrugated pipes, and have smooth pipe sections 41 with smooth surfaces and corrugated sections 42 with corrugated surfaces. The corrugated sections 42 and the smooth pipe sections 41 are alternately arranged along the length direction of the heat exchange pipes 4, and the length of the corrugated sections 42 is greater than the length of the smooth pipe sections 41. Specifically, the length of the corrugated sections 42 is 200 mm, and the length of the smooth pipe sections 41 is 50 mm. The smooth pipe sections 41 are used to cooperate with fixing members (such as gasket strips for heat exchangers) to fix the heat exchange pipes.

[0044] The plurality of spray pipes 5 are arranged in the shell side cylinder 1 along the axial direction, and are wound in the spiral direction of the heat exchange pipes 4 in each layer of spiral pipes (at least one spray pipe 5 is arranged in each layer of spiral pipes, and this spray pipe 5 is wound synchronously with the plurality of heat exchange pipes 4 of the layer, please refer to Figure 2 ). The lower end port of each spray pipe 5 is a liquid inlet port 51, and is in communication with the water collecting tank 6 through the water pump 7. The upper end port of each spray pipe 5 is a liquid outlet port 52 with the opening downward, and is arranged above the spiral pipe along the circumferential direction of the shell side cylinder 1. In order to make the water flow sprayed from each liquid outlet port 52 more uniform, further, the upper end port of each spray pipe 5 is connected with a spray head 54 capable of spraying water downward. In this embodiment, the three spray heads 54 are distributed at the three end points of an equilateral triangle to ensure that the spraying radius of each spray head 54 is not less than 150 mm. A plurality of spray holes 53 are arranged on the pipe wall of each spray pipe 5, and the spray holes 53 are opposite to the pipe wall of the adjacent heat exchange pipe 4 to spray the adjacent heat exchange pipe. Please refer to Figure 2The plurality of spray holes of the spray pipe in the first layer are respectively directed to the upper surfaces of the heat exchange pipes in the second layer and the heat exchange pipes arranged adjacent in the first layer (located below the spray pipe in the first layer); the plurality of spray holes of the spray pipe in the Nth layer are respectively directed to the upper surfaces of the heat exchange pipes in the (N-1)th layer and the heat exchange pipes arranged adjacent in the Nth layer (located below the spray pipe in the Nth layer); the plurality of spray holes of the spray pipe in the intermediate layer between the first layer and the Nth layer are respectively directed to the upper surfaces of the heat exchange pipes of the adjacent layers and the heat exchange pipes arranged adjacent in the same layer.

[0045] The water collector 8 is arranged in the shell side cylinder 1 and above the liquid outlet 52 of the spray pipe 5, and has a passage 80 for the gas flow to pass upward and collect the water in the gas flow. In the embodiment, the water collector 8 is sleeved on the outer periphery of the central cylinder 3 and includes a plurality of vertically arranged and connected water collecting plates 81. The plurality of water collecting plates 81 can be connected by upper and / or lower base plates (the upper and lower base plates can be made in a grid shape or a plate with holes); or can be connected by connecting rods, each connecting rod sequentially passes through each water collecting plate 81 to connect the water collecting plates 81. The plurality of water collecting plates 81 are arranged in the horizontal direction with a spacing, preferably, the spacing between two adjacent water collecting plates is 20-50 mm (the spacing can be 20 mm, 50 mm or any value between the two), which can ensure the gas-water separation effect and not affect the heat exchange of the air cooler, so that the passage 80 is formed between the plate surfaces of two adjacent water collecting plates 81. Meanwhile, the plate surface of each water collecting plate 81 is provided with an upwardly extending lip 811, and the lip 811 and the plate surface of the water collecting plate 81 form a water collecting groove 82 which is upwardly open and used for collecting the water accumulated on the plate surface above the lip 811. Please refer to Figure 5 、 7 ( Figure 5The water collecting plates 81 are represented by the base lines a, the number of which is not limited to that shown in the figure, and the installation positions and arrangement directions of the water collecting plates 81 are represented by several base lines a in the figure. In this embodiment, the water collector 8 further comprises a water collecting groove 83 which is centrally located on the water collector 8 and extends through the water collecting plates 81 along the arrangement direction of the water collecting plates 81, and the water collecting groove 83 has a structure with a bottom plate and side plates located on both sides of the bottom plate, and the water collecting groove 83 has a U-shaped cross section. The water collecting grooves 82 extend from the outside to the inside of the plate surface of the water collecting plates 81 to the water collecting groove 83 and are in communication with the water collecting groove 83, and the water collecting grooves 82 are inclined downward from the outside to the inside, so that the water in the water collecting grooves 82 can flow to the water collecting groove 83 under the action of its own gravity. The central cylinder 3 passes through the water collecting groove 83, and the cylinder wall of the central cylinder 3 opposite to the water collector 8 is provided with a water inlet 32 which is in communication with the water collecting groove 83. In this way, the water collected in the water collecting grooves 82 can enter the central cylinder 3 through the water collecting groove 83 and the water inlet 32, and then flow back to the water collecting tank 6, thereby realizing the reuse of the cooling water.

[0046] In this embodiment, in order to have better water collecting effect, each water collecting plate 81 is made in a wavy structure from top to bottom, please refer to Figure 7 , and one or more water collecting grooves 82 can be designed on the same side plate surface of each water collecting plate 81 as needed, and each water collecting groove 82 is located at the outer protruding part of the plate surface of each water collecting plate 81, so that the water vapor accumulated on the plate surface of each water collecting plate 81 can be completely collected by the water collecting groove 82 when flowing downward.

[0047] Embodiment two:

[0048] As shown in Figure 9 , it is a preferred embodiment two of the wound pipe type composite air cooler of the present application, and this embodiment is basically the same as embodiment one, and the difference is that the structure of the water collector 8 in this embodiment is slightly different, and the specific differences are as follows: the water collector 8 of this embodiment comprises a plurality of vertically arranged and connected water collecting plates 81, and the plurality of water collecting plates 81 are arranged in a circumferential direction at the periphery of the central cylinder 3, and the plate surfaces of the adjacent two water collecting plates 81 form a channel 80 for the gas to pass upward, and the plate surface of each water collecting plate 81 is provided with an upwardly extending lip 811, and the lip 811 and the plate surface of the water collecting plate 81 form a water collecting groove 82 which has an upward opening and is used to collect the water vapor accumulated on the plate surface above the lip 811, and each water collecting groove 82 extends from the outside to the inside of the plate surface of the water collecting plate 81 to the central cylinder 3, and the water collecting groove 82 is inclined downward from the outside to the inside. The inside of the central cylinder 3 is hollow, and the lower end port 31 thereof is in communication with the water collecting tank 6, and the cylinder wall of the central cylinder 3 opposite to the water collector 8 is provided with a water inlet 32 which is in communication with the water collecting groove 82.

[0049] In this way, when the air flow passes upward through the passage 80, the moisture in the air flow will accumulate on the plate surface of the water collecting plate 81 and flow downward along the plate surface of the water collecting plate 81 into the water collecting groove 82. The water in the water collecting groove 82 flows along the water collecting groove 82 under the action of gravity to the water inlet 32 of the central cylinder 3, and then flows back to the water collecting tank 6 through the central cylinder 3, so as to realize the recycling of water.

Claims

1. A spiral wound tube type composite air cooler, comprising: The shell-side cylinder (1) is vertically arranged, and its two ends are respectively equipped with an air inlet (11) and an air outlet (12); Two tube sheets are respectively installed on the side wall of the shell-side cylinder (1), one above the other; Two tube boxes (2) are respectively installed on their respective tube sheets; The central cylinder (3) is vertically disposed inside the shell-side cylinder (1); Multiple heat exchange tubes (4) are arranged axially inside the shell-side cylinder (1) and spirally wound from the inside to the outside of the central cylinder (3) to form a multi-layer spiral tube. The two ends of the heat exchange tubes (4) are respectively supported on their respective tube sheets and connected to the corresponding tube boxes (2). Its features It also includes: Multiple spray pipes (5) are arranged axially inside the shell-side cylinder (1) and wound around each layer of spiral tubes along the spiral direction of the heat exchange tubes (4). The lower end of each spray pipe (5) is a liquid inlet (51), and the upper end of each spray pipe (5) is a liquid outlet (52) with the opening facing downward. The liquid outlet (52) is located above the spiral tubes and is arranged at intervals along the circumference of the shell-side cylinder (1). At the same time, each spray pipe (5) has multiple spray holes (53) on its tube wall, and the spray holes (53) are opposite to the tube walls of the adjacent heat exchange tubes (4). It also includes a water collector (8), which is located inside the shell-side cylinder (1) and above the liquid outlet (52) of the spray pipe (5), and the water collector (8) has a channel (80) for airflow to pass upward and for collecting moisture in the airflow. The water collector (8) includes a plurality of vertically arranged and connected water collection plates (81). The plurality of water collection plates (81) are arranged at intervals in the horizontal direction. The aforementioned channel (80) is formed between the surfaces of two adjacent water collection plates (81). At the same time, an upwardly extending lip (811) is provided on the surface of each water collection plate (81). A water collection ditch (82) with an upward opening is formed between the lip (811) and the surface of the water collection plate (81) for collecting water accumulated on the surface above the lip.

2. A spiral wound tube type composite air cooler, comprising: The shell-side cylinder (1) is vertically arranged, and its two ends are respectively equipped with an air inlet (11) and an air outlet (12); Two tube sheets are respectively installed on the side wall of the shell-side cylinder (1), one above the other; Two tube boxes (2) are respectively installed on their respective tube sheets; The central cylinder (3) is vertically disposed inside the shell-side cylinder (1); Multiple heat exchange tubes (4) are arranged axially inside the shell-side cylinder (1) and spirally wound from the inside to the outside of the central cylinder (3) to form a multi-layer spiral tube. The two ends of the heat exchange tubes (4) are respectively supported on their respective tube sheets and connected to the corresponding tube boxes (2). Its features It also includes: Multiple spray pipes (5) are arranged axially inside the shell-side cylinder (1) and wound around each layer of spiral tubes along the spiral direction of the heat exchange tubes (4). The lower end of each spray pipe (5) is a liquid inlet (51), and the upper end of each spray pipe (5) is a liquid outlet (52) with the opening facing downward. The liquid outlet (52) is located above the spiral tubes and is arranged at intervals along the circumference of the shell-side cylinder (1). At the same time, each spray pipe (5) has multiple spray holes (53) on its tube wall, and the spray holes (53) are opposite to the tube walls of the adjacent heat exchange tubes (4). The bottom of the shell-side cylinder (1) is provided with a water collection tank (6); It also includes a water collector (8), which is located inside the shell-side cylinder (1) and above the liquid outlet (52) of the spray pipe (5), and the water collector (8) has a channel (80) for airflow to pass upward and for collecting moisture in the airflow. The water collector (8) includes multiple vertically arranged and interconnected water collection plates (81). The multiple water collection plates (81) are arranged circumferentially around the periphery of the central cylinder (3). The aforementioned channel (80) is formed between the surfaces of two adjacent water collection plates (81). Each water collection plate (81) has an upwardly extending lip (811) protruding from its surface. The lip (811) and the surface of the water collection plate (81) form an upward-facing water collection ditch (82) for collecting moisture in the airflow. Each water collection ditch (82) extends from the outside to the inside of the surface of the water collection plate (81) toward the central cylinder (3). The interior of the central cylinder (3) is hollow, and its lower end (31) is connected to the aforementioned water collection tank (6). The central cylinder (3) has a water inlet (32) on its wall opposite to the water collector (8), and the water inlet (32) is connected to the aforementioned water collection ditch (82).

3. The wound tube composite air cooler according to claim 1, characterized in that: Each spray pipe (5) has a nozzle (54) at the top end that can spray water downwards.

4. The wound tube composite air cooler according to claim 1, characterized in that: The bottom of the shell-side cylinder (1) is provided with a water collection tank (6), and the liquid inlet (51) of the spray pipe (5) is connected to the water collection tank (6) through a water pump (7).

5. The wound tube composite air cooler according to claim 4, characterized in that: The air inlet (11) is located at the lower end of the shell-side cylinder (1), and the air outlet (12) is located at the upper end of the shell-side cylinder (1).

6. The wound tube composite air cooler according to claim 5, characterized in that: The water collector (8) also includes a water collection trough (83) located in the center of the water collector (8) and extending through the water collection plate (81) along the arrangement direction of the water collection plate (81). The water collection ditch (82) extends from the outside to the inside of the water collection plate (81) to the water collection trough (83) and is connected to the water collection trough (83). The water collector (8) is fitted around the outer periphery of the central cylinder (3), and the water collection trough (83) allows the central cylinder (3) to pass through. The interior of the central cylinder (3) is hollow, and its lower port (31) is connected to the water collection tank (6). The central cylinder (3) has an inlet (32) on the cylinder wall opposite to the water collection trough (83) that is connected to the water collection trough (83).

7. The wound tube composite air cooler according to claim 5, characterized in that: The interval between two adjacent water collection plates (81) is 20~50mm.

8. The spiral wound tube composite air cooler according to claim 2, characterized in that: Each spray pipe (5) has a nozzle (54) at the top end that can spray water downwards.

9. The wound tube composite air cooler according to claim 2, characterized in that: The inlet (51) of the spray pipe (5) is connected to the water collection tank (6) via a water pump (7).

10. The wound tube composite air cooler according to claim 9, characterized in that: The air inlet (11) is located at the lower end of the shell-side cylinder (1), and the air outlet (12) is located at the upper end of the shell-side cylinder (1).

11. The wound tube composite air cooler according to claim 6, 7, or 10, characterized in that: The water collection ditch (82) slopes downward from the outside to the inside.

12. The wound tube composite air cooler according to any one of claims 5, 6, 7, and 10, characterized in that: Each water collection plate (81) is made into a wave-shaped structure from top to bottom. Each water collection plate (81) has at least one of the above-mentioned water collection grooves (82) on the same side surface, and each water collection groove (82) is located at the protruding part of the surface of each water collection plate (81).

13. The wound tube composite air cooler according to any one of claims 1 to 10, characterized in that: The heat exchange tube (4) is a corrugated tube, and has a smooth tube section (41) and a corrugated section (42) with a corrugated surface. The corrugated section (42) and the smooth tube section (41) are arranged alternately along the length of the heat exchange tube (4), and the length of the corrugated section (42) is greater than the length of the smooth tube section (41). Alternatively, the heat exchange tube (4) is a finned tube, having a smooth tube section and a finned section with fins on its surface. The finned section and the smooth tube section are arranged alternately along the length of the heat exchange tube (4), and the length of the finned section is greater than the length of the smooth tube section.

14. The wound tube composite air cooler according to any one of claims 1 to 10, characterized in that: The two tube sheets and two tube boxes (2) mentioned above are grouped together, and there are at least two groups arranged at intervals along the circumference of the shell side cylinder (1).

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