Low noise explosion-proof air-to-air cooler for offshore platform

Abstract

The application discloses offshore platform low-noise explosion-proof air-air cooler and belongs to the technical field of coolers. The air-air cooler comprises an air cooler mechanism, a wind direction adjusting mechanism is arranged in the air cooler mechanism, the air cooler mechanism comprises a noise reduction assembly, a mounting shell and two air cooling assemblies arranged above the mounting shell. The temperature sensor is arranged to detect the circulating gas to be cooled, the electric push rod drives the variable flow guide assembly and the transmission assembly to transmit, so that the angle of attack of the fan blade structure is increased, the air pushing capacity is improved, the air flow is increased, the heat dissipation demand under the high heat load state is met, when the equipment is in the low-temperature and low-load operation state, the temperature of the circulating gas to be cooled is reduced, the angle of attack of the fan blade structure is reduced, the air pushing effect is reduced, the operation resistance of the explosion-proof motor is reduced, the load and operation energy consumption of the explosion-proof motor are reduced, and therefore, the air conveying capacity of the air cooling assembly is matched with the actual heat load.

Description

Technical Field

[0001] This invention relates to the field of cooler technology, and more particularly to a low-noise explosion-proof air cooler for offshore platforms. Background Technology

[0002] With the development of offshore wind power technology, offshore wind power equipment is gradually becoming larger and more powerful. During long-term operation, the electrical and transmission components inside the explosion-proof generator generate a large amount of heat, which needs to be dissipated in a timely manner through a cooling system to ensure that the equipment remains in a stable working state. Air-to-air coolers, as a commonly used heat dissipation device for offshore wind power equipment, use explosion-proof fans to drive airflow through heat exchange tubes, allowing the high-temperature internal medium to exchange heat with the external air, thereby cooling the equipment.

[0003] Because offshore wind power equipment operates in complex environments and experiences variations in wind speed and power load during operation, cooling systems need to adapt to different heat load conditions. Existing air-to-air coolers for offshore wind power equipment typically employ fixed-structure explosion-proof turbine blades and fixed airflow guide structures, making it difficult to adaptively adjust aerodynamic performance according to changes in equipment heat load during actual operation. On one hand, because the installation angle of explosion-proof turbine blades is usually fixed, when the offshore wind power equipment is operating at low load, the cooling demand decreases, but the explosion-proof turbine still needs to operate according to fixed parameters, continuously overcoming significant air resistance. This not only results in additional energy consumption but also increases airflow disturbance and operating noise. On the other hand, when the equipment is operating at high load, the fixed blade structure makes it difficult to further improve air delivery capacity, thus limiting cooling capacity.

[0004] On the other hand, existing air-to-air coolers typically employ a fixed flow guide structure in their internal heat exchange areas. When air passes through two layers of heat exchange tubes, its flow path and distribution cannot be adjusted according to the actual temperature conditions. This results in some heat exchange areas not fully participating in heat exchange under high heat load conditions, limiting the overall heat dissipation capacity. Conversely, under low heat load conditions, the fixed flow guide structure may increase airflow resistance and raise the operating load on the explosion-proof fan.

[0005] Therefore, existing air-cooled systems for offshore wind power generation equipment have the problem of difficulty in dynamically matching cooling performance with operating energy consumption under different operating conditions. It is necessary to propose a structure that can automatically adjust aerodynamic characteristics and heat exchange flow field state according to equipment temperature changes in order to improve the operating efficiency and adaptability of offshore wind power generation equipment cooling system. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing air-to-air coolers, which typically employ fixed-structure explosion-proof fan blades and fixed-form airflow structures. Under low-load operation, the explosion-proof fan still needs to maintain a large air delivery capacity, leading to increased energy consumption and operating noise. Furthermore, under high-load operation, the fixed airflow path makes it difficult to adjust the air distribution according to heat exchange requirements, resulting in insufficient utilization of some heat exchange areas and affecting the overall heat exchange efficiency. Therefore, this invention proposes a low-noise explosion-proof air-to-air cooler for offshore platforms.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A low-noise explosion-proof air cooler for offshore platforms, comprising an air cooler mechanism, wherein the air cooler mechanism is provided with a wind direction adjustment mechanism; The air cooler mechanism includes a noise reduction component, a mounting shell, and two air-cooling components disposed above the mounting shell. Four heat exchange tubes are installed in the mounting shell, and cavities are provided on the upper and lower right sides of the mounting shell. The two ends of the four heat exchange tubes are respectively connected to two cavities. The airflow adjustment mechanism includes a thermal drive component and a variable flow guide component connected to the thermal drive component. Two transmission components are arranged above the variable flow guide component, and the two transmission components are respectively connected to two air-cooling components. When the thermal drive component is affected by the hot airflow entering from the noise reduction component, the variable flow guide component is controlled to change the flow guide posture by the temperature change. At the same time, the variable flow guide component and the transmission components are linked to adjust the air delivery volume of the air-cooling component.

[0008] Preferably, an explosion-proof fan is fixedly installed on one side of the mounting housing, and the air inlet of the explosion-proof fan is connected to the cavity below.

[0009] Preferably, the noise reduction component includes an air intake pipe that communicates with the upper cavity. The end of the air intake pipe away from the cavity is connected to a noise reduction tube. The noise reduction tube contains multiple noise reduction materials. The noise reduction tube is fixedly connected to a bracket, and the bracket is fixedly connected to a mounting shell.

[0010] Preferably, the air-cooling assembly includes a housing and multiple fan blade structures. The housing is fixedly connected to the mounting shell, and an explosion-proof motor is fixedly connected in the housing. The output shaft of the explosion-proof motor is fixedly connected to a rotating shell.

[0011] Preferably, all of the fan blade structures are rotatably mounted on the housing via bearings, and one end of each fan blade structure is fixedly connected to a gear.

[0012] Preferably, the transmission assembly includes a fixed housing and a hexagonal rod. The hexagonal rod is rotatably mounted on the fixed housing via bearings. Rollers are fixedly connected to both sides of the fixed housing. The hexagonal rod passes upward through the rotating housing and slides axially on the rotating housing. A transmission plate is fixedly connected to one end of the hexagonal rod. Multiple gears are fixedly connected above the transmission plate, and the gears mesh with gears.

[0013] Preferably, the variable flow guiding assembly includes three top plates and three sets of rotating shafts. The three top plates are sequentially inserted between the four heat exchange tubes. The three top plates are fixedly connected to each other by multiple arc frames. Each top plate has a telescopic rod fixedly connected to both ends, and one end of the telescopic rod is fixedly connected to the mounting shell.

[0014] Preferably, multiple mounting blocks are fixedly connected to the bottom of the top plate, and multiple rollers are provided on both sides of the multiple mounting blocks. Each set of rotating shafts has two shafts. The two ends of two adjacent rotating shafts are respectively rotatably mounted on two fixed plates through hinges. The fixed plates are fixedly connected to the mounting shell. Each rotating shaft has multiple arc-shaped grooves, and the two ends of the multiple arc-shaped grooves are connected to straight grooves. The rollers can slide in the corresponding straight grooves and slide in cooperation with the corresponding arc-shaped grooves. Each rotating shaft is fixedly connected to a guide plate.

[0015] Preferably, drive plates are fixedly connected to both sides above the top plate in the middle, and the drive plates are provided with inclined grooves, and the roller shaft is slidably engaged with the inclined grooves.

[0016] Preferably, the thermal drive assembly includes an electric push rod, which is mounted on the mounting housing, and a temperature sensor is fixedly connected to one end of the electric push rod in the upper cavity, while the other end of the electric push rod is fixedly connected to the middle top plate.

[0017] Compared with the prior art, the present invention provides a low-noise explosion-proof air cooler for offshore platforms, which has the following beneficial effects: 1. This invention relates to a low-noise explosion-proof air cooler for offshore platforms. By setting a temperature sensor to detect the circulating gas to be cooled, an electric push rod drives a variable flow guide assembly and a transmission assembly to increase the angle of attack of the fan blades, thereby improving the air-pushing capacity and increasing the airflow to meet the heat dissipation requirements under high heat load conditions. When the equipment is in a low-temperature, low-load operating state, the temperature of the circulating gas to be cooled decreases. At this time, the angle of attack of the fan blades can be reduced, reducing the air-pushing effect, reducing the operating resistance of the explosion-proof motor, and reducing the load and energy consumption of the explosion-proof motor. Therefore, the air delivery capacity of the air-cooling assembly is matched with the actual heat load.

[0018] 2. This low-noise explosion-proof air cooler for offshore platforms features a variable flow guide component in the heat exchange area. When the equipment is at a high temperature, the variable flow guide component can be driven by the thermal drive component to operate, causing the guide plate to unfold and change the flow orientation. This redirects the air after passing through the upper heat exchange tube to the surface of the lower heat exchange tube, improving the air utilization rate of the lower heat exchange area and allowing the upper and lower heat exchange areas to participate more fully in heat exchange. Similarly, when the equipment is at a low temperature, the guide plate of the variable flow guide component retracts, allowing the air to pass through the heat exchange tube area along a smoother path, reducing air flow resistance and lowering the energy consumption required for the explosion-proof motor to overcome flow resistance.

[0019] 3. This low-noise explosion-proof air cooler for offshore platforms utilizes the effect of the temperature of the circulating gas entering the system on the heat-driven components. When the temperature of the circulating gas is high, a temperature sensor detects the gas temperature and causes an electric actuator to drive a variable flow guide component to unfold, guiding the air-cooled air from above the heat exchange tubes to below them. Simultaneously, the transmission component is linked to increase the angle of attack of the air-cooling components, thereby increasing the airflow. Similarly, when the temperature of the circulating gas is low, the temperature sensor causes the electric actuator to reset, causing the variable flow guide component to retract and simultaneously reducing the angle of attack of the air-cooling components. This allows the system to return to a low-resistance state, reducing airflow resistance and the operating load of the air-cooling components, thus reducing ineffective energy consumption and noise. As a result, the equipment can automatically adjust the cooling mode according to the actual heat load, ensuring heat dissipation capacity at high temperatures while improving the operational economy and stability under low load conditions. Attached Figure Description

[0020] Figure 1 This is a perspective view of the low-noise explosion-proof air cooler for offshore platforms proposed in this invention. Figure 2 This is a cross-sectional perspective view of the low-noise explosion-proof air cooler for offshore platforms proposed in this invention. Figure 3 This is a side-view sectional perspective view of the low-noise explosion-proof air cooler for offshore platforms proposed in this invention. Figure 4 This is a perspective view of multiple heat exchange tubes arranged in parallel in the low-noise explosion-proof air cooler for offshore platforms proposed in this invention. Figure 5 This is a cross-sectional perspective view of the air-cooled component of the low-noise explosion-proof air cooler for offshore platforms proposed in this invention. Figure 6 This is a perspective view of the assembly between the variable flow guide component and the heat exchange tubes of the low-noise explosion-proof air cooler for offshore platforms proposed in this invention. Figure 7 This is a perspective view of the transmission components and drive plate assembly of the low-noise explosion-proof air cooler for offshore platforms proposed in this invention. Figure 8 This is a partial cross-sectional perspective view of the variable flow guide assembly of the low-noise explosion-proof air cooler for offshore platforms proposed in this invention. Figure 9 This is a perspective view of the guide plate of the low-noise explosion-proof air cooler for offshore platforms proposed in this invention.

[0021] In the diagram: 100, Air cooler mechanism; 101, Mounting housing; 102, Air-cooled assembly; 1021, Housing; 1022, Explosion-proof motor; 1023, Fan blade structure; 1024, Rotating housing; 1025, Gear; 103, Noise reduction assembly; 1031, Inlet pipe; 1032, Noise reduction pipe; 1033, Noise reduction material; 1034, Bracket; 104, Explosion-proof fan; 105, Cavity; 106, Heat exchanger tube; 200, Airflow adjustment mechanism; 201, Thermal drive assembly; 2011, Temperature sensor; 20 12. Electric push rod; 202. Variable flow guide assembly; 2021. Top plate; 2022. Telescopic rod; 2023. Drive plate; 2024. Inclined groove; 2025. Arc frame; 2026. Flow guide plate; 2027. Rotating shaft; 2028. Mounting block; 2029. Roller; 20210. Arc groove; 20211. Straight groove; 203. Transmission assembly; 2031. Toothed rod; 2032. Hexagonal rod; 2033. Transmission plate; 2034. Fixed shell; 2035. Roller shaft; 2036. Fixed plate. Detailed Implementation

[0022] Example 1: Refer to Figures 1-8 A low-noise explosion-proof air cooler for offshore platforms, including an air cooler mechanism 100, wherein an air direction adjustment mechanism 200 is provided in the air cooler mechanism 100. The air cooler mechanism 100 includes a noise reduction component 103, a mounting housing 101, and two air-cooling components 102 disposed above the mounting housing 101. Each air-cooling component 102 includes a housing 1021 and multiple fan blade structures 1023. The housing 1021 is fixedly connected to the mounting housing 101. An explosion-proof motor 1022 is fixedly connected within the housing 1021. The output shaft of the explosion-proof motor 1022 is fixedly connected to a rotating housing 1024. All fan blade structures 1023 are rotatably mounted via bearings. On the rotating shell 1024, an explosion-proof motor 1022 drives the rotating shell 1024 to rotate, which in turn drives the fan blade structure 1023 to rotate, increasing the airflow speed around the heat exchange tube 106 and facilitating the cooling of the internal airflow. Gears 1025 are fixedly connected to one end of each of the multiple fan blade structures 1023. Four heat exchange tubes 106 are installed in the mounting shell 101. Cavities 105 are located on the upper and lower right sides of the mounting shell 101. The two ends of the four heat exchange tubes 106 are... The explosion-proof fan 104 is fixedly installed on one side of the mounting housing 101, and its air inlet is connected to the lower cavity 105. The noise reduction assembly 103 includes an air inlet pipe 1031, which is connected to the upper cavity 105. The end of the air inlet pipe 1031 away from the cavity 105 is connected to a noise reduction tube 1032. The noise reduction tube 1032 contains multiple noise reduction materials 1033, and is fixedly connected to the cavity 105. On the bracket 1034, the bracket 1034 is fixedly connected to the mounting shell 101. The noise reduction material 1033 is sound-absorbing cotton. The external airflow to be cooled passes through the noise reduction material 1033 in sequence for sound absorption and airflow buffering, which reduces the high-speed impact and violent turbulence of the airflow, thereby reducing the possibility of static electricity accumulation caused by violent friction and impact between the airflow and the channel wall. At the same time, the explosion-proof safety performance is further improved by the explosion-proof motor 1022 and the explosion-proof fan 104. The wind direction adjustment mechanism 200 includes a heat-driven assembly 201 and a variable flow guiding assembly 202 connected to the heat-driven assembly 201. The variable flow guiding assembly 202 includes three top plates 2021. Drive plates 2023 are fixedly connected to both sides above the middle top plate 2021. Inclined grooves 2024 are formed on the drive plates 2023. A roller shaft 2035 slides in contact with the inclined grooves 2024. Through the translational movement of the top plates 2021, the drive plates 2023 can pass through the inclined grooves 2024 and engage with the roller shaft 2035. The drive housing 2034 moves up and down, thereby driving the rack 2031 and gear 1025 through the hexagonal rod 2032 and drive plate 2023, thus satisfying the adjustment of the angle of attack of the fan blade structure 1023. The thermal drive assembly 201 includes an electric push rod 2012, which is mounted on the mounting housing 101. A temperature sensor 2011 is fixedly connected to one end of the electric push rod 2012 in the upper cavity 105. The temperature sensor 2011 detects the temperature and outputs a temperature reading. The temperature sensor 2011 detects the temperature of the circulating gas entering the upper cavity 105 when the temperature of the circulating gas to be cooled rises, and transmits the temperature detection signal to the control module. The control module compares the detected temperature with the preset temperature condition. When the detected temperature reaches the preset high temperature condition, the control module controls the electric push rod 2012 to extend through the drive circuit. Similarly, when the detected temperature drops to the preset low temperature condition, the control module outputs a reset control signal to the drive circuit of the electric push rod 2012, causing the electric push rod 2012 to retract. The other end of the electric push rod 2012 is fixedly connected to the top plate 2021 in the middle. By setting the temperature sensor 2011 to detect the circulating gas to be cooled, the electric push rod 2012 drives the variable flow guide component 202 and the transmission component 203 to perform transmission, thereby increasing the angle of attack of the fan blade structure 1023, improving the air pushing ability, and increasing the air flow to meet the heat dissipation requirements under high heat load conditions. Two transmission assemblies 203 are disposed above the variable flow guide assembly 202. Each transmission assembly 203 includes a fixed housing 2034 and a hexagonal rod 2032. The hexagonal rod 2032 is rotatably mounted on the fixed housing 2034 via bearings. The rotating housing 1024 has sliding holes adapted to the hexagonal rod 2032, allowing the hexagonal rod 2032 to slide axially through the sliding holes, enabling it to move axially relative to the rotating housing 1024 and maintain circumferential synchronous rotation with it. The fixed housing 2034 has two sides... Roller shafts 2035 are fixedly connected to each of the components. A hexagonal rod 2032 passes upward through the rotating shell 1024 and slides axially on the rotating shell 1024. A transmission plate 2033 is fixedly connected to one end of the hexagonal rod 2032. Multiple racks 2031 are fixedly connected above the transmission plate 2033. The racks 2031 mesh with gears 1025. The multiple racks 2031 are spaced apart circumferentially along the transmission plate 2033 and mesh with gears 1025 on the corresponding fan blade structures 1023. The tooth pitch of the multiple racks 2031 is... Furthermore, multiple gears 1025 employ the same module and number of teeth, and each gear 1025 has the same installation position and orientation. This ensures that when multiple racks 2031 move synchronously, each gear 1025 generates the same rotation angle, thereby causing multiple fan blade structures 1023 to synchronously change the same angle of attack. Simultaneously, after the rack 2031 contacts the top wall of the rotating housing 1024, it achieves the maximum meshing transmission stroke with the gears 1025, while simultaneously limiting the angle of attack of the fan blade structure 1023. When the adjustment range reaches its maximum, similarly, when the transmission plate 2033 moves downward to below the rotating shell 1024, the angle of attack adjustment range of the fan blade structure 1023 reaches its minimum. The two transmission components 203 are respectively connected to the two air-cooling components 102. When the heat drive component 201 is affected by the hot airflow entering from the noise reduction component 103, the variable flow guide component 202 is controlled by temperature change to change the flow guide attitude. At the same time, the variable flow guide component 202 and the transmission component 203 are linked to adjust the air delivery volume of the air-cooling component 102.

[0023] In this embodiment: the temperature sensor 2011 detects the circulating gas to be cooled, causing the electric push rod 2012 to drive the variable flow guide component 202 and the transmission component 203 to transmit power. Within the preset effective angle of attack adjustment range, when the fan blade structure 1023 is adjusted in the direction of increasing angle of attack, the air delivery capacity of the air-cooling component 102 can be improved, and the cooling air flow through the heat exchange tube 106 can be increased to meet the heat dissipation requirements under high heat load conditions. When the equipment is in a low temperature and low load operation state, the temperature of the circulating gas to be cooled decreases. At this time, the angle of attack of the fan blade structure 1023 can be reduced, reducing the pushing effect on the air, reducing the operating resistance of the explosion-proof motor 1022, and reducing the load and operating energy consumption of the explosion-proof motor 1022. Therefore, the air delivery capacity of the air-cooling component 102 is matched with the actual heat load.

[0024] Example 2: Refer to Figure 6 and Figures 8-9 A low-noise, explosion-proof air cooler for offshore platforms includes a variable flow guide assembly 202. The variable flow guide assembly 202 comprises three top plates 2021 and three sets of rotating shafts 2027. The three top plates 2021 are sequentially inserted between four heat exchange tubes 106 and are fixedly connected by multiple arc frames 2025. Telescopic rods 2022 are fixedly connected to both ends of each top plate 2021, ensuring stable movement of the top plate 2021. One end of each telescopic rod 2022 is fixedly connected to a mounting shell 101. Multiple mounting blocks 2028 are fixedly connected below each top plate 2021, and multiple rollers 2029 are provided on both sides of each mounting block 2028. Each set of rotating shafts 2027 consists of two shafts, and both ends of adjacent rotating shafts 2027 are connected to... The hinge shafts are respectively rotatably mounted on two fixed plates 2036, which are fixedly connected to the mounting shell 101. Each rotating shaft 2027 has multiple arc-shaped grooves 20210, and both ends of the multiple arc-shaped grooves 20210 are connected to straight grooves 20211. The roller 2029 can slide in the corresponding straight groove 20211 and slide with the corresponding arc-shaped groove 20210. The straight groove 20211 allows the roller 2029 to have a buffer movement space. When the roller 2029 enters the arc-shaped groove 20210, the roller 2029 can drive the rotating shaft 2027 to achieve rotational movement through the arc-shaped groove 20210, thereby adjusting the angle of the guide plate 2026 and changing the flow direction. Each rotating shaft 2027 is fixedly connected to the guide plate 2026. In this embodiment: by setting a variable flow guiding component 202 in the heat exchange area, when the equipment is in a high-temperature state, the variable flow guiding component 201 can drive the variable flow guiding component 202 to operate, so that the guide plate 2026 unfolds and changes the flow guiding posture, and guides the air after passing through the upper heat exchange tube 106 back to the surface of the lower heat exchange tube 106, thereby improving the air utilization rate of the lower heat exchange area and enabling the upper and lower heat exchange areas to participate in heat exchange more fully. Similarly, when the equipment is in a low-temperature state, the guide plate 2026 of the variable flow guiding component 202 retracts, so that the air can pass through the heat exchange tube 106 area along a smoother path, reducing air flow resistance and reducing the energy consumption required for the explosion-proof motor 1022 to overcome the flow resistance.

[0025] Example 3: Reference Figures 1-4 A low-noise explosion-proof air cooler for offshore platforms includes an air cooler mechanism 100. The air cooler mechanism 100 includes a noise reduction component 103, a mounting shell 101, and two air-cooling components 102 disposed above the mounting shell 101. Four heat exchange tubes 106 are installed in the mounting shell 101. A cavity 105 is provided on the upper and lower right sides of the mounting shell 101. The two ends of the four heat exchange tubes 106 are respectively connected to the two cavities 105. The airflow adjustment mechanism 200 includes a heat drive component 201 and a variable flow guide component 202 connected to the heat drive component 201. Two transmission components 203 are arranged above the variable flow guide component 202. The two transmission components 203 are respectively connected to two air-cooling components 102. When the heat drive component 201 is affected by the hot airflow entering from the noise reduction component 103, the variable flow guide component 202 is controlled by temperature change to change the flow guide posture. At the same time, the variable flow guide component 202 and the transmission components 203 are linked to adjust the air delivery volume of the air-cooling component 102.

[0026] In this embodiment: By observing the effect of the temperature of the circulating gas entering the cooling system on the thermal drive component 201, when the temperature of the circulating gas is high, the temperature sensor 2011 detects the circulating gas and causes the electric push rod 2012 to drive the variable flow guide component 202 to unfold, which can guide the air-cooled air from above the heat exchange tube 106 to below the heat exchange tube 106. At the same time, the transmission component 203 can be linked to increase the angle of attack of the air-cooling component 102 and increase the airflow. Similarly, when the temperature of the circulating gas is low, the temperature sensor 2011 causes the electric push rod 2012 to reset, causing the variable flow guide component 202 to retract and simultaneously reduce the angle of attack of the air-cooling component 102, thereby synchronously restoring it to a low-resistance state, reducing airflow resistance and the operating load of the air-cooling component 102, reducing ineffective energy consumption and noise. Thus, the equipment can automatically adjust the cooling mode according to the actual heat load, ensuring heat dissipation capacity at high temperatures while improving the operating economy and stability under low load conditions.

[0027] Working principle: When the air cooler mechanism 100 is cooling, the explosion-proof fan 104 draws in the circulating gas to be cooled, which enters through the noise reduction pipe 1032 and is then silenced by the noise reduction material 1033 before entering the upper cavity 105. When the temperature sensor 2011 detects that the temperature of the gas to be cooled is high, the electric push rod 2012 drives the top plate 2021 to move. The middle top plate 2021 drives the top plates 2021 on both sides to move synchronously through the arc frame 2025. The top plate 2021 drives the mounting block 2028 to move, and the mounting block 2028 drives the roller 2029 to move. The roller 2029 enters the arc groove 20210 from the straight groove 20211, so that the roller 2029 and the arc groove 20210 cooperate to drive the rotating shaft 2027 to rotate. The rotating shaft 2027 drives the guide plate 2026 to unfold. Simultaneously, the top plate 2021 drives the drive plate 2023 to move. The drive plate 2023 drives the roller 2035 to move through the inclined groove 2024. The roller 2035 drives the fixed shell 2034 to move upward. The fixed shell 2034 drives the hexagonal rod 2032 to move upward. The hexagonal rod 2032 drives the transmission plate 2033 and the rack 2031 to move. The rack 2031 is driven by the gear 1025. The gear 1025 synchronously drives multiple fan blade structures 1023 to rotate, increasing the angle of attack of the fan blade structure 1023. At this time, after the explosion-proof motor 1022 drives the rotating shell 1024 to rotate and drives the fan blade structure 1023 to rotate, the air flow can be increased. The airflow passes through the upper part of the heat exchange tube 106 for heat exchange in advance. At the same time, the airflow continues to flow downward and is guided by the guide plate 2026 to directly exchange heat with the lower part of the heat exchange tube 106, improving the heat exchange efficiency. When the temperature sensor 2011 detects a decrease in the temperature of the circulating gas to be cooled, the electric push rod 2012 resets, causing the top plate 2021 to reset, so that the roller 2029 engages with the arc groove 20210 again, causing the rotating shaft 2027 to drive the guide plate 2026 to retract. At the same time, the inclined groove 2024 engages with the roller shaft 2035, which allows the hexagonal rod 2032 to move downward, causing the rack 2031 to move downward and engage with the gear 1025. The fan blade structure 1023 rotates to reduce the angle of attack, thus reducing the airflow. This allows the air delivery capacity of the air-cooling component 102 to be matched according to the temperature of the circulating gas to be cooled. Meanwhile, the cooled airflow returns to the interior of the cooling equipment through the explosion-proof fan 104 and the return air channel of the cooling equipment.

Claims

1. A low-noise explosion-proof air cooler for offshore platforms, comprising an air cooler mechanism (100), characterized in that, The air cooler mechanism (100) is provided with an air direction adjustment mechanism (200). The air cooler mechanism (100) includes a noise reduction component (103), a mounting shell (101), and two air-cooling components (102) disposed above the mounting shell (101). Four heat exchange tubes (106) are installed in the mounting shell (101). A cavity (105) is provided on the upper and lower right sides of the mounting shell (101). The two ends of the four heat exchange tubes (106) are respectively connected to the two cavities (105). The airflow adjustment mechanism (200) includes a heat-driven component (201) and a variable flow guide component (202) connected to the heat-driven component (201). Two transmission components (203) are arranged above the variable flow guide component (202). The two transmission components (203) are respectively connected to two air-cooling components (102). When the heat-driven component (201) is affected by the hot airflow entering from the noise reduction component (103), the variable flow guide component (202) is controlled by temperature change to change the flow guide posture. At the same time, the variable flow guide component (202) and the transmission components (203) work together to adjust the air delivery volume of the air-cooling component (102).

2. The low-noise explosion-proof air cooler for offshore platforms according to claim 1, characterized in that, An explosion-proof fan (104) is fixedly installed on one side of the mounting housing (101), and the air inlet of the explosion-proof fan (104) is connected to the cavity (105) below.

3. The low-noise explosion-proof air cooler for offshore platforms according to claim 2, characterized in that, The noise reduction component (103) includes an air intake pipe (1031) which is connected to the upper cavity (105). The end of the air intake pipe (1031) away from the cavity (105) is connected to a noise reduction pipe (1032). The noise reduction pipe (1032) is provided with multiple noise reduction materials (1033). The noise reduction pipe (1032) is fixedly connected to a bracket (1034), and the bracket (1034) is fixedly connected to the mounting shell (101).

4. The low-noise explosion-proof air cooler for offshore platforms according to claim 3, characterized in that, The air-cooled assembly (102) includes a housing (1021) and multiple fan blade structures (1023). The housing (1021) is fixedly connected to the mounting shell (101). An explosion-proof motor (1022) is fixedly connected in the housing (1021). The output shaft of the explosion-proof motor (1022) is fixedly connected to a rotating shell (1024).

5. The low-noise explosion-proof air cooler for offshore platforms according to claim 4, characterized in that, Multiple fan blade structures (1023) are rotatably mounted on the rotating housing (1024) via bearings, and a gear (1025) is fixedly connected to one end of each fan blade structure (1023).

6. The low-noise explosion-proof air cooler for offshore platforms according to claim 5, characterized in that, The transmission assembly (203) includes a fixed housing (2034) and a hexagonal rod (2032). The hexagonal rod (2032) is rotatably mounted on the fixed housing (2034) via bearings. Rollers (2035) are fixedly connected to both sides of the fixed housing (2034). The hexagonal rod (2032) passes through the rotating housing (1024) and slides axially on the rotating housing (1024). A transmission plate (2033) is fixedly connected to one end of the hexagonal rod (2032). Multiple racks (2031) are fixedly connected above the transmission plate (2033). The racks (2031) mesh with gears (1025).

7. The low-noise explosion-proof air cooler for offshore platforms according to claim 6, characterized in that, The variable flow guide assembly (202) includes three top plates (2021) and three sets of rotating shafts (2027). The three top plates (2021) are sequentially inserted between four heat exchange tubes (106). The three top plates (2021) are fixedly connected to each other by multiple arc frames (2025). Both ends of each top plate (2021) are fixedly connected to telescopic rods (2022), and one end of each telescopic rod (2022) is fixedly connected to the mounting shell (101).

8. The low-noise explosion-proof air cooler for offshore platforms according to claim 7, characterized in that, Multiple mounting blocks (2028) are fixedly connected to the bottom of the top plate (2021). Multiple rollers (2029) are provided on both sides of the multiple mounting blocks (2028). There are two rotating shafts (2027) in each group. The two ends of two adjacent rotating shafts (2027) are respectively rotatably mounted on two fixed plates (2036) through hinges. The fixed plates (2036) are fixedly connected in the mounting shell (101). Multiple arc grooves (20210) are opened on each rotating shaft (2027). The two ends of the multiple arc grooves (20210) are connected to straight grooves (20211). The rollers (2029) can slide in the corresponding straight grooves (20211) and slide with the corresponding arc grooves (20210). A guide plate (2026) is fixedly connected to each rotating shaft (2027).

9. The low-noise explosion-proof air cooler for offshore platforms according to claim 8, characterized in that, The top plate (2021) in the middle is fixedly connected to both sides of the top plate (2023). The drive plate (2023) is provided with an inclined groove (2024). The roller (2035) slides in cooperation with the inclined groove (2024).

10. The low-noise explosion-proof air cooler for offshore platforms according to claim 9, characterized in that, The thermal drive assembly (201) includes an electric push rod (2012), which is mounted on the mounting housing (101). A temperature sensor (2011) is fixedly connected to one end of the electric push rod (2012) in the upper cavity (105), and the other end of the electric push rod (2012) is fixedly connected to the middle top plate (2021).

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