An air-cooled steam condenser and method of interposing a wedge-shaped airfoil

Abstract

The present application belongs to the technical field of steam condensation, and in particular to an air-cooled steam condenser with an interposed wedge-shaped air deflector and a method. In order to solve the problems of low heat exchange efficiency, rainwater entering easily, low temperature icing easily and inconvenient cleaning, the condenser shell is provided with upper and lower cavities, both of which are provided with filter screens, the upper cavity is provided with a V-shaped frame I and a condenser tube bundle, the top is provided with an air outlet and a fan, the air deflection part is provided with an air deflector, which can guide cold air to blow the condenser tube bundle at multiple angles, the closed part can open and close the air outlet when the fan starts and stops, the neutralizing part can mix hot and cold air to prevent icing, and the air deflection part is also provided with a cleaning device, which can clean the condenser tube bundle at multiple angles.

Description

Technical Field

[0001] This invention relates to the field of steam condensation technology, and more particularly to an air-cooled steam condenser and method with an internally inserted wedge-shaped air guide plate. Background Technology

[0002] Air-cooled steam condensers, as key heat exchange equipment in thermal systems, are widely used in power, chemical, and refrigeration industries. Their core function is to exchange heat between air and steam within the condenser tube bundle, causing the steam to cool and condense into a liquid state, thereby achieving the recycling of the working fluid or heat recovery. Compared to water-cooled condensers, air-cooled steam condensers do not consume large amounts of water resources and are not limited by water source distribution. They have significant advantages in water-scarce areas or scenarios with high water resource protection requirements, especially when used on ships, where they can fully utilize sea breezes.

[0003] However, existing ship air-cooled steam condensers still have many problems that need to be solved in actual operation;

[0004] 1. In terms of air guiding effect, traditional equipment often adopts a fixed-angle air guiding structure or relies solely on natural wind and forced air delivery by fans to guide airflow. It is difficult to achieve full coverage of the condenser tube bundle with cold air. The condenser tube bundle is usually arranged in an array or group. Fixed air guiding method is prone to forming airflow dead zones between tube bundles, resulting in insufficient heat exchange in some areas. This not only reduces the overall heat exchange efficiency, but may also affect the stability of equipment operation due to excessively high local temperatures.

[0005] 2. Regarding rain protection, the air outlets of existing equipment mostly adopt louvered structures or removable covers. While louvered structures can provide some rain protection when the fan is not running, the gaps are relatively large. During heavy rain or strong winds, rainwater can still easily seep into the equipment, leading to rust on the condenser tubes, short circuits in electrical components, and other malfunctions. Removable covers require manual opening and closing, which is cumbersome and prone to rainwater intrusion due to forgetting to close them or not closing them in time, increasing equipment maintenance costs and operational difficulty.

[0006] 3. Regarding adaptability to low-temperature environments, when the outside temperature drops below minus ten degrees Celsius, the liquid water formed by the condensation of steam in the condenser tube bundle is prone to freezing on the surface of the tube bundle and the bottom of the equipment. This freezing not only further hinders heat exchange and reduces heat exchange efficiency, but may also cause mechanical damage to the condenser tube bundle, shell and other structures due to volume expansion. In severe cases, it may even lead to tube bundle rupture and equipment leakage, affecting the normal operation of the entire thermal system. Existing countermeasures mostly involve adding heating devices to the outside of the equipment, which not only consumes additional energy, but also has problems such as uneven heating and easy local overheating. Summary of the Invention

[0007] The purpose of this invention is to address the shortcomings of existing heat exchange systems, such as low efficiency, easy rainwater ingress, and easy freezing at low temperatures, by proposing an air-cooled steam condenser and method with an internally inserted wedge-shaped air guide plate.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] An air-cooled steam condenser with an internally inserted wedge-shaped air guide plate includes:

[0010] The housing has a lower cavity and an upper cavity inside, with the upper cavity located above the lower cavity;

[0011] A filter screen, fixed in the upper and lower cavities, is used to filter the incoming air;

[0012] The mounting plate is fixed to the bottom inner wall of the upper cavity;

[0013] Two frames I are fixed on the top sides of the mounting plate. The top of both frames I is fixedly connected to the top inner wall of the upper cavity, and the two frames I are arranged in a V-shape.

[0014] Multiple condenser tube bundles are fixed within the two frames I and used to introduce steam for heat exchange;

[0015] Multiple air outlets and fans are provided on the top inner wall of the upper cavity, and the fans are fixed inside the air outlets;

[0016] An air guide section, located within the upper cavity, is used to guide cold air from different angles to cool the condenser tube bundle. The air guide section includes a fixed base, a lifting plate, and multiple uprights.

[0017] A sealing section for discharging hot air during fan operation and sealing the air outlet when the fan stops, the sealing section including a frame II fixed to the top of the housing;

[0018] The neutralization section is used to mix the hot air discharged from the fan with the incoming cold air. The neutralization section includes two manifolds fixed in the lower cavity.

[0019] In one possible design, the air guide further includes:

[0020] A rectangular hole is provided on the inner wall of the bottom of the upper cavity, and the upper cavity is connected to the lower cavity through the rectangular hole. The top of the rectangular hole penetrates the mounting plate.

[0021] The fixing seat is fixed in the rectangular hole, and a reciprocating lead screw is rotatably connected to the top of the fixing seat;

[0022] Motor I is fixed to the bottom of the fixed base by the frame, and the output shaft of Motor I is fixedly connected to the bottom end of the reciprocating lead screw by a coupling;

[0023] The lifting plate is slidably connected in the rectangular hole, and a threaded sleeve is fixed at the bottom of the lifting plate. A slider is fixed inside the threaded sleeve, and the slider slides in cooperation with the reciprocating spiral groove on the outer wall of the reciprocating screw.

[0024] Multiple fixing plates are fixed inside rectangular holes;

[0025] The bottom ends of all of the aforementioned uprights slide through the fixed plate and are fixedly connected to the top of the lifting plate;

[0026] Among them, motor I drives the reciprocating lead screw to rotate, and through the cooperation of the slider and the reciprocating helical groove, it drives the threaded sleeve and the lifting plate to move up and down, thereby driving the upright to move up and down.

[0027] In one possible design, the air guide section further includes two sets of air intake groups, which are respectively arranged in the upper cavity and located on both sides of the rectangular hole.

[0028] The air intake assembly consists of multiple air guide plates arranged vertically. Each air guide plate has a fixed rotating shaft inside. The two ends of the rotating shaft are rotatably connected to the inner walls of the two sides of the upper cavity, and a connecting rod II is fixedly sleeved on the outer wall of each rotating shaft.

[0029] Each of the uprights is fixedly fitted with a bearing seat on its outer wall, and each bearing seat is rotatably connected to two sides of its top, with the connecting rod I being rotatably connected to the adjacent connecting rod II.

[0030] When the support seat moves up and down, the rotation angle of the air guide plate is adjusted by the cooperation of connecting rod I and connecting rod II, so as to guide the cold air entering from the rectangular hole to the direction of the condenser tube bundle in the two frames I.

[0031] In one possible design, the closure further includes:

[0032] Four bases are fixed to the top of the shell, with the four bases arranged in pairs;

[0033] Two fixed shafts, with the same fixed shaft fixed between the two bases in the same group;

[0034] Two plastic plates are rotatably connected to the outer walls of the two fixed shafts, with the ends of the two plastic plates close to each other and abutting against each other, cooperating with frame II to close frame II;

[0035] Among them, multiple of the aforementioned fans are located within frame II.

[0036] In one possible design, the fixed shaft is located off-center inside the plastic plate, and a reset torsion spring is sleeved on the fixed shaft. The two ends of the reset torsion spring are fixedly connected to the plastic plate and the adjacent base through spring seats, respectively, for driving the plastic plate to reset and rotate.

[0037] The bottom of the plastic sheet is fixed with a load-bearing block, and the load-bearing block is located on one side of frame II;

[0038] The plastic panel opens under the push of the airflow discharged by the fan, and after the airflow is lost, it returns to its original position and rotates under the gravity of the load-bearing block, thus re-closing frame II.

[0039] In one possible design, the neutralizing section further includes:

[0040] Two drive shafts are rotatably connected within frame II;

[0041] Two arc-shaped air intake plates are fixedly sleeved on the outer walls of the two drive shafts, respectively;

[0042] Two motors II are fixed to one side of frame II by a frame, and the output shafts of the two motors II are fixedly connected to one end of the two drive shafts respectively by couplings;

[0043] Two U-shaped return air ducts are fixedly inserted through both ends of frame II. The ends of the two U-shaped return air ducts away from frame II are fixedly extended into the lower cavity and are fixedly connected to the corresponding manifold.

[0044] Two L-shaped pipes are fixedly connected on the side of the two manifolds that are close to each other;

[0045] Two grooves are located on the bottom inner wall of the upper cavity and below the two frames I respectively. The top ends of the two L-shaped tubes on the same manifold are fixedly extended into the two grooves respectively.

[0046] Multiple air outlet pipes are fixed on the side of the two manifolds that are close to each other;

[0047] Among them, motor II drives the arc-shaped air intake plate to rotate to an inclined state through the drive shaft, guiding the hot air discharged by the fan into the U-shaped return air duct. After passing through the manifold, part of the hot air enters the groove through the L-shaped pipe and mixes with the cold air in the upper cavity, while the other part enters the lower cavity through the air outlet pipe and mixes with the cold air.

[0048] In one possible design, the lifting plate is provided with multiple ventilation holes;

[0049] The air guide plate is provided with multiple sets of air leakage holes arranged vertically, and each set of air leakage holes is composed of multiple through holes arranged horizontally.

[0050] A top support frame is fixed to the top inner wall of the upper cavity, and the top ends of the multiple uprights slide through the top support frame.

[0051] In one possible design, a bellows is also included, which is fixed to the outer wall of the threaded sleeve, with the bottom end of the bellows fixedly connected to the top of the fixed seat and sleeved on the outer wall of the reciprocating screw.

[0052] An annular guide plate is fixed to the outer wall of the housing near the top.

[0053] In one possible design, multiple cleaning water pipes are fixed to the side of the air guide plate away from the upright and are arranged in a staggered manner with the air leakage hole group.

[0054] A connecting pipe is fixedly connected to one end of one of the plurality of cleaning water pipes, and the connecting pipe is connected to an external water pump through a high-temperature resistant hose.

[0055] Multiple nozzles are fixed on the side of the cleaning water pipe away from the air guide plate;

[0056] Drain pipe I is fixedly connected to the bottom inner wall of the lower cavity;

[0057] Two drain pipes II are fixedly connected to the inner wall of one side of each of the two grooves;

[0058] Both drain pipe II and drain pipe I are equipped with valves. The top end of the L-shaped pipe is fixedly inserted through the bottom inner wall of the groove and extends upwards by 3cm-5cm. This extension structure is used to prevent clean water in the groove from flowing back into the L-shaped pipe, ensuring the cleanliness of the hot air circulation channel.

[0059] This application discloses a method of using an air-cooled steam condenser with an internally inserted wedge-shaped air guide plate, comprising the following steps:

[0060] S1. The shell is installed on the ship's deck. Steam on the ship is connected to the condenser tube bundle inside the shell through pipes. Then, the fan in the air outlet runs. When running, negative pressure is generated in the lower and upper chambers. Cold air from the outside is drawn into the lower and upper chambers through the filter. When the cold air enters the upper chamber through the filter, it comes into contact with one side of the multiple condenser tube bundles arranged in a V shape and exchanges heat. The cold air entering the lower chamber flows upward through the rectangular hole and flows to the other side of the multiple condenser tube bundles under the guidance of the air guide plate, where it exchanges heat with the other side of the condenser tube bundles. After the heat exchange is completed, the cold air is heated to form hot air, which is discharged upward under the action of the fan.

[0061] S2. The reciprocating screw is driven to rotate by motor I. The reciprocating spiral groove on the outer wall of the reciprocating screw slides with the slider in the threaded sleeve, driving the lifting plate to rise and fall. The lifting plate drives the upright and the support seat to rise and fall. The support seat drives the connecting rod II to rotate around the axis of rotation through the rotational cooperation of connecting rod I and connecting rod II, thereby adjusting the rotation angle of the air guide plate. The air guide plate guides the air to different angles and, in combination with the cold air entering the upper cavity, can perform heat exchange on the condenser tube bundle without dead angles. In addition, the air guide plate is provided with multiple through holes, which allow the cold air flowing out from the rectangular holes to flow upward and be guided by the air guide plate located above, further improving the heat exchange efficiency.

[0062] S3. When the fan is running, the exhaust hot air flows upward to generate airflow. The plastic plate is pushed by the airflow to overcome the elasticity of the return torsion spring and the weight of the load-bearing block to rotate, releasing the closure of frame II and restoring exhaust. Conversely, when the fan stops running, the elasticity of the return torsion spring and the weight of the load-bearing block work together to force the plastic plate to reverse, so that the two plastic plates come into close contact at the ends, closing frame II and forming a sealed 'roof' with frame II, preventing rainwater from naturally invading the interior.

[0063] S4. When a ship travels to the polar regions (such as the Arctic shipping route), the air temperature it draws in is extremely low (below -30°C), which can easily cause condensate to freeze at the bottom of the pipe bundle and burst the pipes. Therefore, it is necessary to start motor II. Motor II drives the arc-shaped air intake plate to rotate from vertical to tilted state through the drive shaft. One end of the arc-shaped air intake plate extends above the corresponding fan, which can guide the hot air discharged by the fan to the U-shaped return air pipe and the manifold through the arc-shaped air intake plate. Then, the hot air is guided to the upper cavity and the lower cavity through the L-shaped pipe and the air outlet pipe, respectively, so that the hot air mixes with the cold air outside, physically increasing the intake air temperature and preventing the pipe bundle from freezing.

[0064] S5. When it is necessary to clean the condenser tube bundle to prevent dust and dirt from affecting its heat exchange, clean water is injected into the connecting pipe through an external water pump. The clean water is then sprayed onto the condenser tube bundle through the clean water pipe and nozzles for cleaning. During the cleaning process, the reciprocating screw driven by motor I rotates continuously, which drives the lifting plate, upright and support to move up and down, thereby driving the air guide plate to swing. This allows the nozzles to clean the condenser tube bundle from different angles, improving cleaning efficiency. The clean water is discharged to the outside through drain pipe II and drain pipe I.

[0065] Beneficial effects: In this invention, the angle of the air guide plate can be adjusted back and forth by setting the air guide section, guiding cold air to blow on the condenser tube bundle from different angles. The two frames I are distributed in a V shape. Combined with the angle adjustment of the air guide plate, the contact area between the cold air and the condenser tube bundle can be increased, avoiding the airflow dead zone problem caused by the traditional fixed air guide method. At the same time, the through holes set on the air guide plate and the ventilation holes set on the lifting plate ensure smooth airflow. Some cold air can flow upward through the through holes and be guided by the upper air guide plate, further improving the heat exchange uniformity. After the fan is started, a stable airflow circulation is formed, which accelerates the discharge of hot air after heat exchange and promotes the entry of cold air, thus improving the overall heat exchange efficiency of the equipment.

[0066] In this invention, the sealing section adopts a gravity-driven automatic opening and closing structure, which does not require an additional power source. When the fan is running, the hot air thrust pushes the plastic plate to open, ensuring that the hot air is discharged smoothly. When the fan stops running, the plastic plate automatically closes under its own weight and the action of the load-bearing block, sealing the air outlet and effectively preventing rainwater and other impurities from entering the upper cavity. In conjunction with the annular guide plate on the top of the shell, rainwater can be guided to the surroundings, further reducing the possibility of rainwater seepage, reducing the risk of failures such as corrosion of the condenser tube bundle and short circuit of electrical components, and improving the reliability and service life of the equipment.

[0067] In this invention, the neutralization section enables the recovery and reuse of hot air. In sub-zero low-temperature environments, a portion of the hot air discharged by the fan is guided by an arc-shaped air intake plate and mixed with the cold air entering the upper and lower cavities through a U-shaped return air duct, a manifold, an L-shaped duct, and an outlet air duct, respectively. This physically increases the intake air temperature. This method eliminates the need for additional heating devices, reducing energy consumption. It also avoids the problems of uneven heating and localized overheating associated with traditional heating methods. This effectively prevents the condensation of steam in the condenser tube bundle from freezing, thus avoiding mechanical damage to the condenser tube bundle, shell, and other structures caused by freezing and improving the equipment's adaptability to low-temperature environments.

[0068] In this invention, the air guide section allows cold air to blow through the condenser tube bundle from multiple angles, improving heat exchange efficiency; the sealing section effectively prevents rainwater from entering, ensuring normal operation of the equipment; the neutralization section mixes hot and cold air at low temperatures, preventing the condenser tube bundle from freezing; and the cleaning device can clean the condenser tube bundle from different angles, improving cleaning efficiency. Attached Figure Description

[0069] Figure 1 A three-dimensional structural schematic diagram of an air-cooled steam condenser with an internally inserted wedge-shaped air guide plate provided by the present invention;

[0070] Figure 2 A three-dimensional exploded structural diagram of an air-cooled steam condenser with an internally inserted wedge-shaped air guide plate provided by the present invention;

[0071] Figure 3 A three-dimensional cross-sectional view of an air-cooled steam condenser with an internally inserted wedge-shaped air guide plate provided by the present invention;

[0072] Figure 4 A three-dimensional exploded structural diagram of the frame I, drain pipe II, and air guide plate of an air-cooled steam condenser with an internally inserted wedge-shaped air guide plate provided by the present invention;

[0073] Figure 5 A three-dimensional exploded structural diagram of the mounting plate, frame I, and condenser tube bundle of an air-cooled steam condenser with an internally inserted wedge-shaped air guide plate provided by the present invention;

[0074] Figure 6 A partial three-dimensional exploded structural diagram of the air guide plate and rotating shaft of an air-cooled steam condenser with an internally inserted wedge-shaped air guide plate provided by the present invention;

[0075] Figure 7 A three-dimensional exploded view of the fixed base and lifting plate of an air-cooled steam condenser with an internally inserted wedge-shaped air guide plate provided by the present invention;

[0076] Figure 8 A three-dimensional structural schematic diagram of connecting rod I and connecting rod II of an air-cooled steam condenser with an internally inserted wedge-shaped air guide plate provided by the present invention;

[0077] Figure 9 A cross-sectional view of the frame II and plastic plate of an air-cooled steam condenser with an internally inserted wedge-shaped air guide plate provided by the present invention.

[0078] Figure 10 A three-dimensional exploded structural diagram of the plastic plate, frame II, and fan of an air-cooled steam condenser with an internally inserted wedge-shaped air guide plate provided by the present invention;

[0079] Figure 11 A three-dimensional exploded structural diagram of the arc-shaped air guide plate, frame II, and manifold of an air-cooled steam condenser with an internally inserted wedge-shaped air guide plate provided by the present invention;

[0080] Figure 12 A cross-sectional view of the shell of an air-cooled steam condenser with an internally inserted wedge-shaped air guide plate provided by the present invention.

[0081] Figure 13 This is a cross-sectional view of the air guide plate and the cleaning water pipe of an air-cooled steam condenser with an internally inserted wedge-shaped air guide plate provided by the present invention.

[0082] In the diagram: 1. Shell; 2. Lower cavity; 3. Upper cavity; 4. Filter screen; 5. Mounting plate; 6. Frame I; 7. Condenser tube bundle; 8. Rectangular hole; 9. Rotating shaft; 10. Air guide plate; 11. Through hole; 12. Fixing base; 13. Reciprocating screw; 14. Motor I; 15. Lifting plate; 16. Threaded sleeve; 17. Corrugated pipe; 18. Drain pipe II; 19. Vent hole; 20. Fixing plate; 21. Upright pole; 22. Top support frame; 23. Bearing base; 4. Linkage I; 25. Linkage II; 26. Air outlet; 27. Fan; 28. Frame II; 29. ​​Base; 30. Fixed shaft; 31. Plastic plate; 32. Load-bearing block; 33. Drive shaft; 34. Motor II; 35. Arc-shaped air guide plate; 36. U-shaped return air duct; 37. Combination pipe; 38. L-shaped pipe; 39. Groove; 40. Air outlet duct; 41. Annular guide plate; 42. Cleaning water pipe; 43. Nozzle; 44. Connecting pipe; 45. Drainage pipe I. Detailed Implementation

[0083] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0084] In one embodiment: Refer to Figure 1 and Figure 2 An air-cooled steam condenser with an internally inserted wedge-shaped air guide plate, relating to the field of steam condensation technology, mainly includes a shell 1, with a lower cavity 2 and an upper cavity 3 inside the shell 1, the upper cavity 3 being located above the lower cavity 2. Two filters 4 are fixed inside both the upper cavity 3 and the lower cavity 2. The filters 4 are made of woven metal wire, possessing high filtration accuracy and strength, effectively filtering the air entering the lower cavity 2 and upper cavity 3, removing dust, impurities, and other particulate matter from the air, preventing these particles from entering the condenser and adhering to the surface of the condenser tube bundle 7, thus affecting heat exchange efficiency. The filters 4 are fixed to the inner wall of the cavity by bolts or clips, facilitating installation and disassembly, and allowing for regular cleaning and replacement.

[0085] Reference Figure 4 and Figure 5 The bottom inner wall of the upper cavity 3 is fixed with a mounting plate 5. The top two sides of the mounting plate 5 are fixed with frames I6. The tops of the two frames I6 are fixedly connected to the top inner wall of the upper cavity 3, and the two frames I6 form a V shape. Multiple condenser tube bundles 7 are fixed inside the two frames I6. The condenser tube bundles 7 are composed of multiple metal tubes. The metal tubes are made of copper and are used to pass steam for heat exchange. When the steam flows in the condenser tube bundles 7, it exchanges heat with the surrounding cold air and gradually condenses into liquid.

[0086] Reference Figure 3 and Figure 10 The upper cavity 3 has multiple air outlets 26 on its top inner wall. These outlets are evenly distributed on the top of the upper cavity 3 to ensure that hot air can be discharged evenly. Each outlet 26 is equipped with a fan 27. The fan 27 is a centrifugal fan or an axial fan with a large air volume and air pressure, which can effectively discharge the hot air in the upper cavity 3. The outer casing of the fan 27 is fixed to the inner wall of the outlet 26 with bolts. The motor of the fan 27 is fixed to the outside of the housing 1 with a bracket for easy heat dissipation and maintenance.

[0087] Reference Figure 3 , Figure 4 and Figure 7 In order to enable the cold air from the outside to exchange heat with the condenser tube bundle 7 without dead angles, an air guide is provided in the upper cavity 3. The air guide includes a fixed seat 12, a lifting plate 15 and multiple uprights 21. The air guide section also includes a rectangular hole 8 set on the inner wall of the bottom of the upper cavity 3, and the upper cavity 3 is connected to the lower cavity 2 through the rectangular hole 8. The top of the rectangular hole 8 passes through the mounting plate 5. The fixed seat 12 is fixed in the rectangular hole 8. The top of the fixed seat 12 is rotatably connected to the reciprocating screw 13. The bottom of the fixed seat 12 is fixed to the motor I 14 through the frame. The motor I 14 is an AC motor or a DC motor with stable speed and torque output. The output shaft of the motor I 14 is fixedly connected to the bottom end of the fixed seat 12 through a coupling. The coupling is an elastic coupling or a rigid coupling, which can effectively transmit the torque of the motor I 14 and compensate for a certain installation error. A lifting plate 15 is slidably connected in the rectangular hole 8. A threaded sleeve 16 is fixed at the bottom of the lifting plate 15. A slider is fixed in the threaded sleeve 16 and slides with the reciprocating spiral groove on the outer wall of the reciprocating screw 13 to drive the threaded sleeve 16 to move up and down reciprocally. When motor I14 drives the reciprocating screw 13 to rotate, the slider slides in the reciprocating spiral groove, causing the threaded sleeve 16 and the lifting plate 15 to move up and down.

[0088] The outer casing of motor I14 is equipped with heat dissipation fins, and the frame of the mounting base 12 has ventilation holes that are connected to the airflow channel of the lower cavity 2 to achieve natural heat dissipation.

[0089] Reference Figure 3 , Figure 4 and Figure 7 Multiple fixing plates 20 are fixed inside the rectangular hole 8, evenly distributed inside the rectangular hole 8, for supporting the uprights 21. The bottom ends of the multiple uprights 21 slide through the fixing plates 20 and are fixedly connected to the top of the corresponding lifting plates 15. The uprights 21 are made of metal rods, have a certain strength and rigidity, and can move synchronously with the up and down movement of the lifting plates 15. The number of uprights 21 is set according to the needs of air guidance, generally 3-5.

[0090] Reference Figure 3, Figure 4 and Figures 6-8 The air guide section also includes two sets of air intake groups, which are respectively located inside the upper cavity 3 and on both sides of the rectangular hole 8. These groups guide the cold air entering the upper cavity 3 through the rectangular hole 8 towards the condenser tube bundles 7 within the two frames I6. Each air intake group consists of multiple vertically arranged air guide plates 10. The air guide plates 10 have a certain curvature to effectively guide the flow direction of the cold air. Each air guide plate 10 has a fixed rotating shaft 9, with both ends rotatably connected to the inner walls of both sides of the upper cavity 3. The two ends of the rotating shaft 9 are connected to the inner walls of the upper cavity 3 via bearings, ensuring that the air guide plates 10 can rotate flexibly. Multiple connecting rods II 25 are fixedly sleeved on the outer wall of each of the multiple uprights 21, and bearing seats 23 are fixedly sleeved on the outer wall of each of the multiple uprights 21. They can move synchronously with the up and down movement of the uprights 21. Connecting rods I 24 are rotatably connected to the top two sides of the multiple bearing seats 23, and are rotatably connected to the bearing seats 23 through pins. When the bearing seats 23 move up and down, the rotation angle of the air guide plate 10 can be adjusted by the cooperation of connecting rods I 24 and connecting rods II 25. Thus, the air guide plate 10 can guide the cold air to different directions, and cooperate with the cold air entering the upper cavity 3 through the filter screen 4 to perform heat exchange with the condenser tube bundle 7 without dead angles, thereby improving the heat exchange efficiency.

[0091] The two ends of the rotating shaft 9 are rotatably connected to the inner walls of the upper cavity 3 on both sides through flexible couplings. The flexible couplings are used to compensate for the thermal expansion and contraction of the rotating shaft 9 under extreme temperature differences, and to prevent the rotation from jamming. The air guide plate 10 is made of low-temperature resistant alloy material, and its edge is reserved with a 2-3mm temperature compensation gap with the inner wall of the upper cavity 3. All metal transmission components of this device are made of low-temperature resistant alloy material, and flexible couplings or reserved temperature compensation gaps are set at key rotating connections, which can adapt to the ambient temperature difference of -40℃ to 50℃ and avoid structural jamming caused by thermal expansion and contraction.

[0092] Reference Figure 2 , Figure 9 and Figure 10It also includes a sealing section for discharging hot air after heat exchange in the upper cavity 3 when the fan 27 is running, and sealing the air outlet 26 when the fan 27 stops running to prevent rainwater from entering the upper cavity 3. The sealing section includes a frame II 28 fixed to the top of the housing 1, and four bases 29 fixed to the top of the housing 1. The four bases 29 are arranged in pairs, and a common fixed shaft 30 is fixed between two bases 29 in the same pair. Plastic plates 31 are rotatably connected to the outer walls of the two fixed shafts 30. The plastic plates 31 are made of engineering materials. Made of plastic, it has a certain strength and toughness, and is lightweight. It can rotate flexibly under the propulsion of airflow. The size of the plastic plate 31 is designed according to the size of the frame II 28 to ensure that the frame II 28 can be completely closed. The ends of the two plastic plates 31 that are close to each other are used to cooperate with the frame II 28 to close the frame II 28. Multiple fans 27 are located inside the frame II 28. The plastic plate 31 and the frame II 28 cooperate to protect the air outlet 26 and the fans 27, preventing rainwater from entering the upper cavity 3.

[0093] Reference Figure 9 and Figure 10 The fixed shaft 30 is located off-center inside the plastic plate 31, which is used to reset the plastic plate 31 after it loses the push of the airflow discharged by the fan 27 and re-close the frame II 28. The bottom of the plastic plate 31 is fixed with a load-bearing block 32, which is located on one side of the frame II 28. The load-bearing block 32 is made of metal and has a certain weight, which is used to enable the plastic plate 31 to rotate under the gravity of the load-bearing block 32 and close the frame II 28.

[0094] A reset torsion spring is provided between the side of the plastic plate 31 away from the load-bearing block 32 and the frame II 28. The reset torsion spring is sleeved on the outer wall of the fixed shaft 30, with one end fixedly connected to the frame II 28 and the other end fixedly connected to the plastic plate 31. The reset torsion spring cooperates with the load-bearing block 32 to realize the reliable reset of the plastic plate 31 and ensure that the frame II 28 is tightly closed.

[0095] Reference Figure 2 , Figure 3 and Figure 11It also includes a neutralization section, which is used to mix the hot air discharged from the fan 27 with the cold air entering the lower cavity 2 and the upper cavity 3 when encountering sub-zero temperatures, to prevent the steam in the condenser tube bundle 7 from condensing and freezing. The neutralization section includes two manifolds 37 fixed in the lower cavity 2. The neutralization section also includes two drive shafts 33 rotating in the frame II 28. The outer walls of the two drive shafts 33 are fixedly fitted with arc-shaped air guide plates 35. The arc-shaped air guide plates 35 are made of metal plates and have a certain curvature and area, which can effectively guide the flow direction of hot air. Two motors II 34 are fixed on one side of the frame II 28 through the frame. The output shafts of the two motors II 34 are fixedly connected to one end of the two drive shafts 33 respectively through couplings. The couplings are flexible couplings or rigid couplings, which can effectively transmit the torque of the motors II 34.

[0096] The housing of motor II34 is equipped with a heat sink, which has heat dissipation holes. The heat sink is oriented away from the air outlet of fan 27 to prevent hot air from blowing directly onto motor II34 and to ensure heat dissipation.

[0097] Reference Figures 2-4 and Figure 11 The arc-shaped air intake plate 35 is located near both ends of frame II 28 and cooperates with the adjacent fan 27. It is used to guide the hot air discharged by the fan 27 when the arc-shaped air intake plate 35 is rotated and tilted. Both ends of frame II 28 are fixedly connected to U-shaped return air pipes 36, which cooperate with the arc-shaped air intake plate 35 to guide the hot air discharged by the fan 27 into the U-shaped return air pipes 36. The ends of the two U-shaped return air pipes 36 away from frame II 28 are fixedly extended into the lower cavity 2 and are fixedly connected to the corresponding manifold 37. The sides of the two manifolds 37 that are close to each other are fixedly connected to L-shaped pipes 38, which can guide the hot air to a designated position. The bottom inner wall of the upper cavity 3 is provided with two grooves 39, which are located below the two frames I 6 and are located in the same manifold 3. The top ends of the two L-shaped tubes 38 on the 7 are fixedly extended into the two grooves 39 respectively, which are used to neutralize the hot air with the cold air entering the upper cavity 3 through the filter screen 4. Multiple air outlet pipes 40 are fixed on the side of the two manifolds 37 that are close to each other, which are used to neutralize the hot air with the cold air entering the lower cavity 2. The motor II 34 drives the arc-shaped air guide plate 35 to rotate from vertical to inclined through the drive shaft 33, and one end of the arc-shaped air guide plate 35 extends to the top of the corresponding fan 27, which can guide the hot air discharged by the fan 27 to the U-shaped return air pipe 36 and the manifold 37 through the arc-shaped air guide plate 35. Then the hot air is guided to the upper cavity 3 and the lower cavity 2 through the L-shaped tubes 38 and the air outlet pipes 40 respectively, so that the hot air mixes with the cold air outside, physically increases the air inlet temperature, and prevents the tube bundle from freezing.

[0098] Reference Figure 6and Figure 7 The lifting plate 15 is provided with multiple ventilation holes 19. The diameter of the ventilation holes 19 is designed according to the flow rate and velocity of the cold air to prevent the lifting plate 15 from obstructing the entry of the cold air in the lower cavity 2 into the upper cavity 3. The air guide plate 10 is provided with multiple sets of air leakage holes, which are arranged vertically. Each set of air leakage holes consists of multiple horizontally arranged through holes 11. Through the through holes 11, the cold air flowing out of the rectangular hole 8 can flow upward and be guided by the air guide plate 10 located above, further improving the heat exchange efficiency.

[0099] Reference Figure 3 and Figure 7 A top support frame 22 is fixed to the inner wall of the upper cavity 3. The top ends of multiple uprights 21 slide through the top support frame 22 to increase the stability of the uprights 21 moving up and down. A bellows 17 is fixed to the outer wall of the threaded sleeve 16, providing a certain degree of elasticity and sealing. The bottom end of the bellows 17 is fixedly connected to the top of the fixed base 12. The bellows 17 is sleeved on the outer wall of the reciprocating screw 13 to protect the reciprocating screw 13 and prevent dust and impurities from entering the spiral groove of the reciprocating screw 13 and affecting its normal operation.

[0100] It also includes a lip seal ring, which is fixed to the inner side of the top of the threaded sleeve 16 and fits tightly against the outer wall of the reciprocating screw 13; the bellows 17 is a salt spray resistant metal bellows, whose top end is fixedly connected to the bottom of the threaded sleeve 16, completely covering the reciprocating screw 13 and the sliding block mating area to isolate salt and dust. The combined design of the salt spray resistant bellows and the lip seal ring can effectively prevent salt and dust in the ship deck environment from entering the reciprocating screw transmission area, ensuring the long-term stable operation of the transmission components.

[0101] Reference Figure 1 and Figure 2 An annular guide plate 41 is fixed on the outer wall of the shell 1 near the top. The annular guide plate 41 is made of metal sheet and has a certain curvature. It is used to guide rainwater to the four sides of the shell 1 and prevent rainwater from seeping into the shell 1 through the filter screen 4.

[0102] It also includes a PLC controller, which is fixed to the outer wall of housing 1 and electrically connected to motor I 14, motor II 34, fan 27, and external water pump. The PLC controller has pre-stored control logic: after fan 27 starts, motor I 14 starts after a 3-5 second delay; when the ambient temperature is detected to be below -10℃, motor II 34 starts automatically; during cleaning, the water pump is triggered by an external control button to run synchronously with motor I 14. This device is equipped with a PLC controller (model is only an example and not limited to this) to coordinate the timing of the actions of each electric actuator and ensure operational stability.

[0103] In another embodiment: Refer to Figure 12and Figure 13 Multiple cleaning water pipes 42 are fixed on the side of the air guide plate 10 away from the upright 21, and the cleaning water pipes 42 are staggered with the air leakage hole group to avoid the cleaning water pipes 42 blocking the through hole 11. One end of the multiple cleaning water pipes 42 is fixedly connected to the same connecting pipe 44. The connecting pipe 44 is connected to an external water pump through a high-temperature resistant hose for injecting cleaning water into the cleaning water pipes 42. Multiple nozzles 43 are fixed on the side of the cleaning water pipes 42 away from the air guide plate 10. The nozzles 43 are high-pressure nozzles 43, which can spray high-pressure cleaning water to clean the condenser tube bundle 7.

[0104] Reference Figure 12 The bottom inner wall of the lower cavity 2 is fixedly connected to a drain pipe I 45 for drainage. The inner walls of both grooves 39 are fixedly connected to drain pipes II 18 on one side for discharging clean water entering the grooves 39. Both drain pipes II 18 and drain pipe I 45 are equipped with valves, either ball valves or gate valves, to effectively control water discharge. The top end of the L-shaped pipe 38 is fixedly inserted through the bottom inner wall of the groove 39 and extends upwards by 3cm-5cm to prevent clean water entering the grooves 39 from entering the L-shaped pipe 38. Clean water is injected into the connecting pipe 44 by an external water pump, and the clean water is sprayed onto the condenser tube bundle 7 through the clean water pipe 42 and the nozzle 43 to clean the condenser tube bundle 7. During the cleaning process, the reciprocating screw 13 driven by the motor I 14 rotates continuously, which drives the lifting plate 15, the upright 21 and the support seat 23 to move up and down back and forth, thereby driving the air guide plate 10 to swing. This allows the nozzle 43 to clean the condenser tube bundle 7 from different angles, improving the cleaning efficiency. The clean water is discharged to the outside through the drain pipe II 18 and the drain pipe I 45.

[0105] A method of using an air-cooled steam condenser with an internally inserted wedge-shaped air guide plate includes the following steps:

[0106] S1. Install the shell 1 onto the ship's deck. The steam on the ship is connected to the condenser tube bundle 7 inside the shell 1 through a pipe. Then, the fan 27 in the air outlet 26 runs. When running, negative pressure is generated in the lower cavity 2 and the upper cavity 3. Cold air from the outside is drawn into the lower cavity 2 and the upper cavity 3 through the filter screen 4. When the cold air enters the upper cavity 3 through the filter screen 4, it comes into contact with one side of the multiple condenser tube bundles 7 arranged in a V shape and exchanges heat. The cold air entering the lower cavity 2 flows upward through the rectangular hole 8 and flows to the other side of the multiple condenser tube bundles 7 under the guidance of the air guide plate 10, and exchanges heat with the other side of the condenser tube bundles 7. After the heat exchange is completed, the cold air is heated to form hot air and is discharged upward under the action of the fan 27.

[0107] S2. The reciprocating screw 13 is driven to rotate by motor I14. The reciprocating spiral groove on the outer wall of the reciprocating screw 13 slides with the slider in the threaded sleeve 16, driving the lifting plate 15 to rise and fall. The lifting plate 15 drives the upright 21 and the support seat 23 to rise and fall. The support seat 23 drives the connecting rod II25 to rotate around the rotating shaft 9 through the rotational cooperation of connecting rod I24 and connecting rod II25, thereby adjusting the rotation angle of the air guide plate 10. The air guide plate 10 guides the air to different angles, and can cooperate with the cold air entering the upper cavity 3 to perform heat exchange on the condenser tube bundle 7 without dead angles. In addition, the air guide plate 10 is provided with multiple through holes 11. The cold air flowing out from the rectangular hole 8 can be guided upward by the air guide plate 10 located above, further improving the heat exchange efficiency.

[0108] S3. When the fan 27 is running, the exhaust hot air flows upward to generate airflow. Under the push of the airflow, the plastic plate 31 overcomes the elastic force of the return torsion spring and the weight of the load block 32 to rotate, releasing the closure of the frame II 28 and restoring exhaust. Conversely, when the fan 27 stops running, the elastic force of the return torsion spring and the weight of the load block 32 work together to force the plastic plate 31 to reverse, so that the two plastic plates 31 come into close contact with each other, closing the frame II 28 and forming a sealed 'roof' with the frame II 28 to prevent rainwater from naturally invading the interior.

[0109] S4. When a ship travels to the polar regions (such as the Arctic shipping route), the air temperature it draws in is extremely low (below -30°C), which can easily cause condensate to freeze at the bottom of the pipe bundle and burst the pipe. Therefore, it is necessary to start motor II 34. Motor II 34 drives the arc-shaped air guide plate 35 to rotate from vertical to tilted state through the drive shaft 33. One end of the arc-shaped air guide plate 35 extends above the corresponding fan 27, which can guide the hot air discharged from the fan 27 to the U-shaped return air pipe 36 and the manifold 37 through the arc-shaped air guide plate 35. Then, the hot air is guided to the upper cavity 3 and the lower cavity 2 through the L-shaped pipe 38 and the air outlet pipe 40, respectively, so that the hot air mixes with the cold air outside, physically increases the intake air temperature, and prevents the pipe bundle from freezing.

[0110] S5. When it is necessary to clean the condenser tube bundle 7 to prevent dust and dirt on it from affecting its heat exchange, clean water is injected into the connecting pipe 44 by an external water pump, and the clean water is sprayed onto the condenser tube bundle 7 through the clean water pipe 42 and the nozzle 43 for cleaning the condenser tube bundle 7. During the cleaning process, the reciprocating screw 13 is continuously rotated by the motor I 14, which can drive the lifting plate 15, the upright 21 and the bearing seat 23 to move up and down back and forth, thereby driving the air guide plate 10 to swing. This allows the nozzle 43 to clean the condenser tube bundle 7 from different angles, improving the cleaning efficiency. The clean water is discharged to the outside through the drain pipe II 18 and the drain pipe I 45.

[0111] S6. During the operation of this device, the filter screen 4 needs to be disassembled and cleaned every 3 months to avoid dust blockage affecting the air intake efficiency; every 6 months, salt spray resistant lubricant should be added to the rotating connection of the reciprocating screw 13, rotating shaft 9, and drive shaft 33 to ensure flexible transmission; the bellows 17 and lip seal 46 should be inspected annually, and if aging or damage occurs, they should be replaced in time to prevent salt from entering key components.

[0112] However, as is well known to those skilled in the art, the working principles and wiring methods of the fan 27, motor I 14 and motor II 34 are commonplace and are all conventional methods or common knowledge. They will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0113] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0114] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An air cooled steam condenser of the type having an array of wedge-shaped louvers, characterized by, The utility model relates to a kind of air cooler, including: Shell (1), lower cavity (2) and upper cavity (3) are equipped in the shell (1), and upper cavity (3) is located above lower cavity (2); Filter screen (4) is fixed in the upper cavity (3) and lower cavity (2), for filtering the air entering; Mounting plate (5) is fixed in the bottom inner wall of the upper cavity (3); Two frames I (6) are fixed in the top of mounting plate (5) both sides, the top of two frames I (6) is fixedly connected with the top inner wall of upper cavity (3), and two frames I (6) are arranged in V shape; Multiple condenser tube bundles (7) are fixed in two frames I (6), for passing into steam to carry out heat exchange; Multiple air outlets (26) and fan (27) are arranged in the top inner wall of the upper cavity (3), and the fan (27) is fixed in the air outlet (26); Air guide part is arranged in the upper cavity (3), for guiding cold air to cool condenser tube bundle (7) from different angles, and the air guide part includes fixed seat (12), lifting plate (15) and multiple vertical rods (21); The air guide part further includes: Rectangular hole (8) is arranged in the bottom inner wall of the upper cavity (3), and the upper cavity (3) is communicated with lower cavity (2) through rectangular hole (8), and the top of the rectangular hole (8) penetrates mounting plate (5); The fixed seat (12) is fixed in the rectangular hole (8), and the top of the fixed seat (12) is rotatably connected with reciprocating screw rod (13); Motor I (14) is fixed in the bottom of fixed seat (12) through rack, and the output shaft of motor I (14) is fixedly connected with the bottom end of reciprocating screw rod (13) through shaft coupling; The lifting plate (15) is slidably connected in the rectangular hole (8), the bottom of the lifting plate (15) is fixed with threaded sleeve (16), the sliding block is fixed in the threaded sleeve (16), and the sliding block is slidably matched with the reciprocating screw groove on the outer wall of reciprocating screw rod (13); Multiple fixed plates (20) are fixed in the rectangular hole (8); The bottom end of multiple vertical rods (21) is slidably penetrated through fixed plate (20) and fixedly connected with the top of lifting plate (15); Wherein, motor I (14) drives reciprocating screw rod (13) to rotate, drives threaded sleeve (16) and lifting plate (15) to reciprocate up and down by the cooperation of sliding block and reciprocating screw groove, so as to drive vertical rod (21) to move up and down; The air guide part further includes two groups of air guide groups, and the two groups of air guide groups are arranged in the upper cavity (3) and located at the two sides of rectangular hole (8); Each air guide plate (10) is fixed with rotating shaft (9), and the two ends of the rotating shaft (9) are rotatably connected with the two side inner walls of the upper cavity (3), and the outer wall of each rotating shaft (9) is fixedly sleeved with connecting rod II (25); The outer wall of each vertical rod (21) is fixedly sleeved with bearing seat (23), and the top of each bearing seat (23) is rotatably connected with connecting rod I (24) both sides, and the connecting rod I (24) is rotatably connected with adjacent connecting rod II (25). Wherein, when the bearing seat (23) moves up and down, the rotating angle of the air deflector (10) is adjusted by the cooperation of the connecting rod I (24) and the connecting rod II (25) to guide the cold air entering from the rectangular hole (8) to the direction of the condenser tube bundle (7) in the two frame I (6); The closing part is used for discharging hot air when the fan (27) is running and closing the air outlet (26) when stopping, and the closing part comprises a frame II (28) fixed on the top of the shell (1); The neutralizing part is used for mixing the hot air discharged by the fan (27) with the entering cold air, and the neutralizing part comprises two converging pipes (37) fixed in the lower cavity (2); the neutralizing part further comprises: Two drive shafts (33) are rotatably connected in the frame II (28); Two arc-shaped air guide plates (35) are respectively fixedly sleeved on the outer walls of the two drive shafts (33); Two motor IIs (34) are fixed on one side of the frame II (28) through the frame, and the output shafts of the two motor IIs (34) are fixedly connected with one ends of the two drive shafts (33) through the shaft couplings; Two U-shaped air return pipes (36) are fixedly penetrated through both ends of the frame II (28), and one ends of the two U-shaped air return pipes (36) away from the frame II (28) are fixedly extended into the lower cavity (2) and fixedly communicated with the corresponding converging pipes (37); Two L-shaped pipes (38) are fixedly communicated on one sides of the two converging pipes (37) close to each other; Two recesses (39) are arranged on the inner walls of the bottoms of the upper cavities (3) and are respectively located below the two frame I (6), and top ends of the two L-shaped pipes (38) on the same converging pipe (37) are fixedly extended into the two recesses (39); A plurality of air outlet pipes (40) are fixed on one sides of the two converging pipes (37) close to each other; Wherein, the motor II (34) drives the arc-shaped air guide plate (35) to rotate to the inclined state through the drive shaft (33), and the hot air discharged by the fan (27) is guided into the U-shaped air return pipe (36), and after the hot air passes through the converging pipe (37), part of the hot air enters the recess (39) through the L-shaped pipe (38) to mix with the cold air in the upper cavity (3), and the other part of the hot air enters the lower cavity (2) through the air outlet pipe (40) to mix with the cold air.

2. An air cooled steam condenser with an interposed wedge vane according to claim 1, characterized in that, The closing part further comprises: Four bases (29) are fixed on the top of the shell (1), and the four bases (29) are in two groups; Two fixed shafts (30) are fixed between the two bases (29) in the same group; Two plastic plates (31) are rotatably connected on the outer walls of the two fixed shafts (30), and the two plastic plates (31) abut against each other at the ends close to each other, and cooperate with the frame II (28) to close the frame II (28); Wherein, the plurality of fans (27) are located in the frame II (28).

3. An air cooled steam condenser with an interposed wedge vane according to claim 2, characterized in that, The fixed shaft (30) is located at a position deviated from the center in the plastic plate (31), a reset torsional spring is sleeved on the fixed shaft (30), and the two ends of the reset torsional spring are fixedly connected with the plastic plate (31) and the adjacent base (29) through the spring seats, for driving the plastic plate to reset and rotate; The bottom of the plastic plate (31) is fixed with a load-bearing block (32), and the load-bearing block (32) is located on one side of the frame II (28); Wherein, the plastic plate (31) is opened under the push of the air flow discharged by the fan (27), and is reset under the gravity of the load-bearing block (32) after losing the air flow, and reseals the frame II (28).

4. An air cooled steam condenser with an interposed wedge vane according to claim 3, characterized in that, A plurality of air holes (19) are arranged in the lifting plate (15); A plurality of groups of air leakage holes arranged in an up-down manner are arranged on the air deflector (10), and each group of air leakage holes is composed of a plurality of transversely arranged through holes (11); A top support frame (22) is fixed to the top inner wall of the upper cavity (3), and the top ends of the plurality of vertical rods (21) are slidably penetrated through the top support frame (22).

5. An air cooled steam condenser with an interposed wedge vane according to claim 4, characterized in that, A corrugated pipe (17) is fixed to the outer wall of the threaded sleeve (16), and the bottom end of the corrugated pipe (17) is fixedly connected with the top of the fixed seat (12) and is sleeved on the outer wall of the reciprocating lead screw (13); An annular guide vane (41) is fixed to the outer wall of the shell (1) near the top end.

6. An air cooled steam condenser with an interposed wedge vane according to claim 5, characterized in that, A plurality of cleaning water pipes (42) are fixed to one side of the air deflector (10) away from the vertical rod (21) and are arranged in a staggered manner with the air leakage hole group; A communication pipe (44) is fixedly communicated with one end of the plurality of cleaning water pipes (42), and the communication pipe (44) is communicated with the water pump outside through a high-temperature-resistant hose; A plurality of nozzles (43) are fixed to one side of the cleaning water pipe (42) away from the air deflector (10); A drain pipe I (45) is fixedly communicated with the bottom inner wall of the lower cavity (2); Two drain pipes II (18) are respectively fixedly communicated with the inner walls of one side of the two recesses (39); Wherein, the drain pipe II (18) and the drain pipe I (45) are both provided with valves, and the top end of the L-shaped pipe (38) is fixedly penetrated through the bottom inner wall of the recess (39) and extends upward by 3-5 cm, and the extending structure is used to block the cleaning water in the recess (39) from flowing backward into the L-shaped pipe (38), and to ensure the cleanliness of the hot air flow channel.

7. The use of an air-cooled steam condenser with an interposed wedge-shaped airfoil, as claimed in claim 6, characterized in that, The steps include: S1, install the shell (1) to the deck of the ship, the steam on the ship is communicated with the condenser bundle (7) in the shell (1) through the pipeline, then the fan (27) in the air outlet (26) operates, when operating, negative pressure is generated in the lower cavity (2) and the upper cavity (3), the cold air outside is sucked into the lower cavity (2) and the upper cavity (3) through the filter screen (4), when the cold air enters the upper cavity (3) through the filter screen (4), it contacts one side of the plurality of condenser bundles (7) arranged in a V shape, and heat exchange is performed, while the cold air entering the lower cavity (2) flows upward through the rectangular hole (8), and flows to the other side of the plurality of condenser bundles (7) under the guidance of the air deflector (10), and heat exchange is performed on the other side of the condenser bundle (7), and after the heat exchange is completed, the cold air is heated to form hot air, which is discharged upward under the action of the fan (27); S2, the reciprocating screw rod (13) is driven to rotate by the motor I (14), the reciprocating screw groove on the outer wall of the reciprocating screw rod (13) is in sliding cooperation with the slider in the threaded sleeve (16), the lifting plate (15) is driven to lift, the lifting plate (15) drives the vertical rod (21) and the bearing seat (23) to lift, the bearing seat (23) drives the connecting rod II (25) to rotate around the rotating shaft (9) through the rotating cooperation of the connecting rod I (24) and the connecting rod II (25), so as to adjust the rotating angle of the air deflector (10), guide the air to different angles through the air deflector (10), and cooperate with the cold air entering the upper cavity (3) to exchange heat with the condenser tube bundle (7) without dead angle, in addition, a plurality of through holes (11) are arranged on the air deflector (10), the cold air flowing out of the rectangular hole (8) can flow upwards and be guided by the air deflector (10) located above, further improving the heat exchange efficiency; S3, when the fan (27) operates, the hot air discharged flows upwards to generate air flow, the plastic plate (31) is rotated under the pushing of the air flow to overcome the elastic force of the reset torsional spring and the gravity of the weight block (32), the closure of the frame II (28) is released, and the exhaust is restored; on the contrary, when the fan (27) stops running, the elastic force of the reset torsional spring and the gravity of the weight block (32) jointly act, forcibly drive the plastic plate (31) to reverse, make the two plastic plates (31) closely abut at one end close to each other, close the frame II (28), and form a sealed 'roof' with the frame II (28), to prevent rainwater from naturally invading the inside; S4, when the ship runs to the polar region, the temperature of the inhaled air is extremely low, which is easy to cause the condensate water to freeze and crack the pipeline at the bottom of the tube bundle, therefore, the motor II (34) needs to be started, the motor II (34) drives the arc-shaped air deflector (35) to rotate vertically to the inclined state through the driving shaft (33), and one end of the arc-shaped air deflector (35) extends above the corresponding fan (27), so that the hot air discharged by the fan (27) is discharged into the U-shaped air return pipe (36) and the manifold (37) through the guidance of the arc-shaped air deflector (35), then the hot air is guided into the upper cavity (3) and the lower cavity (2) through the L-shaped pipe (38) and the air outlet pipe (40) respectively, so that the hot air is mixed with the cold air outside, the air inlet temperature is physically improved, and the freezing of the tube bundle is prevented; S5, when it is necessary to clean the condenser tube bundle (7) to avoid the dust and dirt on the condenser tube bundle (7) affecting heat exchange, clean water is injected into the communication pipe (44) through the water pump outside, and the clean water is sprayed to the condenser tube bundle (7) through the clean water pipe (42) and the nozzle (43), so as to clean the condenser tube bundle (7), and during the cleaning process, the reciprocating screw rod (13) is continuously driven to rotate by the motor I (14), so as to drive the lifting plate (15), the vertical rod (21) and the bearing seat (23) to move up and down reciprocatingly, and then drive the air deflector (10) to swing, so that the nozzle (43) can clean the condenser tube bundle (7) from different angles, improve the cleaning efficiency, and the clean water is discharged to the outside through the drain pipe II (18) and the drain pipe I (45).

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