An air cooler tube bundle

Abstract

The present invention provides an air-cooled heat exchanger tube bundle, belonging to the technical field of air-cooled heat exchangers. The invention includes a plurality of tube bundle bodies, and two relatively arranged main frames and connecting frames, and further includes: an adaptive flow guiding component, a cleaning component; by the action of air on the filter frame, the air flow circulation path and the distance between the air and the main pipe are changed, the air flow is disturbed to extend the residence time of the air outside the tube bundle, enhancing heat exchange. At the same time, the filter groove and the filter screen plate cooperate to reduce the influence of impurities on heat exchange, improving the heat exchange efficiency of the air-cooled heat exchanger; when the fan operates, the air flow flowing through the filter frame is used to drive the cleaning component to work, driving the connecting rod and the wiping block to do circular motion along the outer side of the main pipe. The outer fiber fabric of the wiping block adsorbs the dust on the outer wall of the main pipe, preventing dust accumulation from affecting heat exchange. The inner metal frame provides structural support and promotes heat dissipation. Moreover, when the wiping block rotates, it disturbs the air flow, changing the air flow direction, making the heat exchange on the outer surface of the main pipe more uniform, and improving the heat exchange effect of the entire air-cooled heat exchanger tube bundle.

Description

Technical Field

[0001] The present invention relates to the technical field of air coolers, and more particularly, to an air cooler tube bundle. Background Art

[0002] An air cooler, that is, an air-cooled heat exchanger, is a device that uses air as a cooling medium. As the core component of the air cooler, the air cooler tube bundle plays a crucial role in the heat exchange process. The innovation and development of its technology have become the key to improving the overall performance of the air cooler.

[0003] In the related technical fields, many researchers and enterprises have been constantly working on the research and improvement of air cooler tube bundles. The structure of the early air cooler tube bundles was relatively simple, mainly composed of plain tube bundles. Their heat transfer efficiency was found to be insufficient in the face of the increasing industrial cooling demands. With the continuous progress of technology, finned tube bundles have gradually been widely used. By adding fins to the surface of plain tubes, the heat transfer area on the air side has been effectively expanded, and the heat transfer efficiency has been improved to a certain extent. However, there are still many deficiencies in the existing finned tube bundles. For example, during actual operation, the air flow distribution on the surface of the tube bundle is often uneven, resulting in overheating in some areas and insufficient heat transfer in some other areas. This uneven heat transfer phenomenon severely restricts the improvement of the overall heat transfer performance of the air cooler. At the same time, dust, impurities and other dirt are easily accumulated on the surface of the tube bundle. The presence of the dirt layer significantly increases the thermal resistance and reduces the heat transfer efficiency.

[0004] How to invent an air cooler tube bundle to solve these problems has become an urgent problem for those skilled in the art. Summary of the Invention

[0005] To make up for the above deficiencies, the present invention provides an air cooler tube bundle, aiming to solve the problems mentioned in the above background.

[0006] The present invention is implemented as follows:

[0007] The present invention provides an air cooler tube bundle, including a plurality of tube bundle bodies, and two relatively arranged main frames and connecting frames. A plurality of mounting holes are provided on the main frames. The inner sides of the upper and lower ends of the main frames are welded to the ends of the connecting frames. The tube bundle body is composed of a main tube, a transfer U-shaped tube and a connecting pipe. The main tube is installed between the two main frames after passing through the mounting holes. The adjacent ends of the main tubes are connected and communicated through the transfer U-shaped tube. The ends of the main tubes located on the uppermost side and the lowermost side are connected and communicated with the connecting pipe. The end of the connecting pipe located on the upper side is connected and communicated with a water inlet pipe, and the end of the connecting pipe located on the lower side is connected and communicated with a water outlet pipe. Further included are:

[0008] Adaptive flow guiding component: The adaptive flow guiding component is arranged on the main pipe. The adaptive flow guiding component is used to extend the residence time of the air flow outside the tube bundle and can change the flow path of the wind force according to the wind force of the air cooler fan;

[0009] Cleaning component: The cleaning component is arranged between the adaptive flow guiding component and the main pipe. The cleaning component can clean the dust on the main pipe when the fan is working.

[0010] Preferably, the adaptive flow guiding component includes a support structure, an upper filter frame and a lower filter frame. The support structure is composed of a mounting ring and support rods. The support rods are fixedly connected to the mounting ring as a whole. A sliding cavity is formed inside the support rods. A sliding column and a spring are arranged in the sliding cavity. The end of the sliding column penetrates through the top wall of the support rod and extends to the outside of the support rod. The spring is sleeved on the outside of the sliding column located in the sliding cavity. The upper end of the support rod points in the same direction as the flow direction of the wind force of the fan.

[0011] Preferably, the support structure is fixedly installed on the main pipe and close to the end of the main pipe. The number of support structures on the same main pipe is two. The end of the sliding column located outside the support rod is fixedly connected to the lower side of the upper filter frame. The side wall of the upper filter frame between the two support structures is fixedly connected to the lower filter frame.

[0012] Preferably, the cross section of the upper filter frame is U-shaped. The lower filter frame is a box-shaped structure with a hollow top. Filter grooves are formed on the top wall of the upper filter frame and the bottom wall of the lower filter frame. The filter grooves on the upper filter frame and the lower filter frame are arranged staggeredly. A filter screen plate is attached to the outside of the filter grooves.

[0013] Preferably, in the initial state, the bottom of the sliding column abuts against the bottom of the sliding cavity, and there is a gap between the upper end of the upper filter frame and the main pipe above it.

[0014] Preferably, the adaptive flow guiding component is pre-installed on the main pipe, and then the main pipe is installed on the main frame through the installation hole. Subsequently, the welding of the transfer U-shaped pipe and the connecting pipe is carried out. Finally, the water inlet pipe and the water outlet pipe are welded and connected to the corresponding connecting pipes.

[0015] Preferably, the cleaning component includes an air collecting groove, a main air inlet pipeline, a rotating mechanism, a connecting rod, a wiping block, an air guiding channel formed in the sliding column and an annular cavity formed in the mounting ring. The rotating mechanism is rotatably arranged in the annular cavity. The air collecting groove and the main air inlet pipeline are both formed on the top wall of the upper filter frame and close to the mounting ring. The air collecting groove is communicated with the main air inlet pipeline. The end of the main air inlet pipeline away from the air collecting groove penetrates through the side wall of the upper filter frame. The end of the air guiding channel penetrates through the upper and lower side walls of the sliding column. A notch matching the air guiding channel is formed at the bottom of the sliding cavity. The sliding cavity is communicated with the annular cavity through this notch.

[0016] Preferably, the end of the main intake pipe away from the air collecting groove communicates with the upper end of the air guiding channel. Side intake pipes are provided on both sides of the main intake pipe. One end of each side intake pipe penetrates through the side wall of the air collecting groove, and the other end penetrates through the side wall of the main intake pipe.

[0017] Preferably, the rotating mechanism is composed of a ferrule, two limiting rings and a plurality of baffles. The limiting rings and the baffles are both fixed on the ferrule. The limiting rings are located on both sides of the ferrule, and the baffles are located between the two limiting rings. The limiting rings are in contact with the side wall of the annular cavity, and there is a gap between the baffles and the inner wall of the annular cavity. A limiting ring groove is provided on the side wall of the mounting ring facing the lower filter rack. The side wall of the limiting ring facing the lower filter rack is fixedly connected to the connecting rod. The connecting rod is arranged to match the limiting ring groove. An installation groove is provided at the upper end of the wiping block. The wiping block is snap-fitted and installed on the connecting rod through the installation groove. The bottom of the wiping block is in contact with the outer side wall of the main pipe.

[0018] Preferably, the inner frame of the wiping block is made of a metal structure, and the outer layer is wrapped with a fiber fabric after anti-hair loss treatment. The frame is designed into a concave-convex structure matching the shape of the main pipe.

[0019] The beneficial effects of the present invention are as follows:

[0020] When the wind force changes, through the action of air on the filter racks (the upper filter rack and the lower filter rack), the sliding column and the filter racks are driven to move, changing the air flow path and the distance between the air and the main pipe, disturbing the air flow to extend the residence time of the air outside the tube bundle, enhancing heat exchange. At the same time, the filter tank and the filter screen plate cooperate to filter air impurities under different wind force states, maintain the air cleanliness, reduce the adverse effects of impurities on heat transfer, and effectively improve the heat transfer efficiency of the air cooler under different working conditions; when the fan operates, the airflow flowing through the filter racks is used to drive the cleaning assembly to work, pushing the rotating mechanism to rotate, and then driving the connecting rod and the wiping block to do circular motion along the outer side of the main pipe. The outer fiber fabric of the wiping block adsorbs the dust on the outer side wall of the main pipe, preventing dust accumulation from affecting heat transfer. The inner metal frame provides structural support and promotes heat dissipation. Moreover, when the wiping block rotates, it disturbs the air flow, changes the air flow direction, makes the heat transfer on the outer surface of the main pipe more uniform, improves the heat transfer effect of the entire air cooler tube bundle, reduces the performance degradation and maintenance requirements caused by dust and uneven heat transfer, and improves the overall reliability and economy of the equipment. Description of the Drawings

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and thus should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure of an air cooler tube bundle provided by the present invention;

[0023] Figure 2 It is a front view structure schematic diagram of an air cooler tube bundle provided by the present invention;

[0024] Figure 3 It is a partial structure schematic diagram of an air cooler tube bundle provided by the present invention;

[0025] Figure 4 It is a schematic diagram of the installation direction structure of an air cooler tube bundle provided by the present invention;

[0026] Figure 5 It is a schematic diagram of the tube bundle main body and the adaptive flow guiding component of an air cooler tube bundle provided by the present invention;

[0027] Figure 6 It is a schematic diagram of the cross-section of the main pipe of an air cooler tube bundle provided by the present invention;

[0028] Figure 7 It is an air cooler tube bundle provided by the present invention Figure 6 The enlarged structure schematic diagram at position A in;

[0029] Figure 8 It is a schematic diagram of the cross-section of the support structure of an air cooler tube bundle provided by the present invention;

[0030] Figure 9 It is an air cooler tube bundle provided by the present invention Figure 8 The enlarged structure schematic diagram at position B in;

[0031] Figure 10 It is a schematic diagram of the upper filter rack and the lower filter rack of an air cooler tube bundle provided by the present invention;

[0032] Figure 11 It is a schematic diagram when the air flow of an air cooler tube bundle passes through the upper filter rack and the lower filter rack;

[0033] Figure 12 It is a schematic diagram of the air flow when an air cooler tube bundle is working;

[0034] Figure 13 It is a schematic diagram of the initial state structure of an air cooler tube bundle provided by the present invention;

[0035] Figure 14 It is a schematic structural diagram of an air cooler tube bundle during operation provided by the present invention.

[0036] In the figure: 1, tube bundle main body; 2, water inlet pipe; 3, main frame; 4, support structure; 5, upper filter frame; 6, sliding column; 7, rotating mechanism; 8, gas collecting groove; 9, connecting rod; 11, main pipe; 12, transfer U-shaped pipe; 13, connecting pipe; 21, water outlet pipe; 30, mounting hole; 31, connecting frame; 41, mounting ring; 42, support rod; 43, limit ring groove; 51, lower filter frame; 52, filter groove; 61, air guiding channel; 62, spring; 71, ferrule; 72, limit ring; 73, baffle; 81, main air inlet pipeline; 82, side air inlet pipeline; 91, wiping block; 421, sliding cavity. Specific embodiments

[0037] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0038] Example 1, referring to Figures 1 - 14, an air-cooled heat exchanger tube bundle, comprising a plurality of tube bundle bodies 1 and two oppositely arranged main frames 3 and connecting frames 31. A plurality of mounting holes 30 are formed in the main frame 3. The inner sides of the upper and lower ends of the main frame 3 are welded to the ends of the connecting frame 31. The inner sides of the upper and lower ends of the main frame 3 and the ends of the connecting frame 31 are welded together to form a solid frame structure. This frame can effectively support the tube bundle body 1, bear the weight of the tube bundle, the pressure of the internal fluid, and the possible external impact forces (such as wind blowing, vibration, etc.), ensuring the structural stability of the air-cooled heat exchanger tube bundle during operation. The tube bundle body 1 is composed of a main pipe 11, a transfer U-shaped pipe 12, and a connecting pipe 13. The main pipe 11 is installed between the two main frames 3 after passing through the mounting holes 30. The adjacent ends of the main pipes 11 are connected by the transfer U-shaped pipe 12. The ends of the main pipes 11 located at the uppermost and lowermost sides are connected to the connecting pipe 13. The end of the connecting pipe 13 located on the upper side is connected to a water inlet pipe 2, and the end of the connecting pipe 13 located on the lower side is connected to a water outlet pipe 21. The main pipe 11 serves as the main heat exchange channel, carrying the fluid to be cooled. The existence of the transfer U-shaped pipe 12 ensures that the fluid between adjacent main pipes 11 can be smoothly connected, enabling the fluid to be evenly distributed throughout the tube bundle body 1, avoiding local overheating or uneven cooling. The connecting pipes 13 are respectively connected to the main pipes 11 at the uppermost and lowermost sides, with one end connected to the water inlet pipe 2 and the other end connected to the water outlet pipe 21, thereby providing a complete inlet and outlet path for the fluid and ensuring the basic heat exchange function of the air-cooled heat exchanger tube bundle. It further includes:

[0039] An adaptive flow guiding component: The adaptive flow guiding component is arranged on the main pipe 11 and is used to extend the residence time of the airflow outside the tube bundle and can change the flow path of the wind force according to the wind force of the air-cooled heat exchanger fan;

[0040] A cleaning component: The cleaning component is arranged between the adaptive flow guiding component and the main pipe 11, and the cleaning component can clean the dust on the main pipe 11 when the fan is working.

[0041] Furthermore, the adaptive flow guiding component includes a support structure 4, an upper filter frame 5, and a lower filter frame 51. The support structure 4 is composed of a mounting ring 41 and support rods 42. The support rods 42 are fixedly connected to the mounting ring 41 as a whole. A sliding cavity 421 is formed inside the support rods 42. A sliding column 6 and a spring 62 are arranged in the sliding cavity 421. The end of the sliding column 6 penetrates through the top wall of the support rod 42 and extends to the outside of the support rod 42. The spring 62 is sleeved on the outside of the sliding column 6 located in the sliding cavity 421. The upper end of the support rod 42 points in the same direction as the flow direction of the wind force of the fan.

[0042] The support structure 4 is fixedly installed on the main pipe 11 and near the end of the main pipe 11. The number of support structures 4 on the same main pipe 11 is two. The end of the sliding column 6 located outside the support rod 42 is fixedly connected to the lower side of the upper filter frame 5. The side wall of the upper filter frame 5 between the two support structures 4 is fixedly connected to the lower filter frame 51.

[0043] The adaptive flow guiding component is pre-installed on the main pipe 11, and then the main pipe 11 is installed on the main frame 3 through the installation hole 30. Subsequently, the welding of the transfer U-shaped pipe 12 and the connecting pipe 13 is carried out. Finally, the water inlet pipe 2 and the water outlet pipe 21 are welded and connected to the corresponding connecting pipes 13. The multiple installation holes 30 on the main frame 3 provide accurate installation positions for the main pipes 11 in the tube bundle body 1, enabling the main pipes 11 to be neatly and stably arranged between the two main frames 3. This installation method facilitates the assembly and positioning of the tube bundle and is also conducive to subsequent maintenance and repair.

[0044] It should be noted that the cross-section of the upper filter frame 5 is U-shaped, and the lower filter frame 51 is a box-shaped structure with a hollow top. Their shapes and relative positions cause the air to bypass these structures when flowing through, thereby changing the direction and speed of the air flow. Filter grooves 52 are provided on the top wall of the upper filter frame 5 and the bottom wall of the lower filter frame 51. The filter grooves 52 on the upper filter frame 5 and the lower filter frame 51 are arranged staggeredly. When the air flows through the upper filter frame 5 and the lower filter frame 51, the staggeredly arranged filter grooves 52 cause the air to change the flow direction, and the air needs to spend more time to pass through, so that there is more time for heat exchange with the tube bundle, improving the heat exchange efficiency of the air-cooled tube bundle. A filter screen plate is attached to the outside of the filter groove 52. When the air contains tiny dust particles or fine dust in the industrial production environment, the filter screen plate can effectively intercept these fine impurities outside the filter groove 52. When the filtration system needs to be cleaned, the filter screen plate is relatively easier to disassemble and clean. Compared with directly cleaning the inside of the filter groove 52, the operation of cleaning the filter screen plate is more convenient. The filter screen plate can be regularly removed and maintained by means such as flushing, purging or replacing the filter screen, which can ensure the filtering effect while reducing the impact on the structure of the filter groove 52 and reducing the maintenance cost and time.

[0045] In the initial state, the bottom of the sliding column 6 abuts against the bottom of the sliding cavity 421, and there is a gap between the upper end of the upper filter frame 5 and the main pipe 11 above it. When the wind force of the fan changes, the positions of the upper filter frame 5 and the lower filter frame 51 will also change accordingly, further disturbing the air flow and prolonging the residence time of the air flow outside the tube bundle, enabling the air to exchange heat more fully with the tube bundle body 1 and improving the cooling efficiency of the air-cooled tube bundle.

[0046] In this embodiment, first, the main pipes 11 of multiple tube bundle bodies 1 are inserted through the mounting holes 30 on the main frame 3, so that the main pipes 11 are neatly arranged between the two main frames 3. This installation method of the main pipes 11 utilizes the positioning function of the mounting holes 30 to ensure the accurate and stable position of each main pipe 11. Then, the ends of adjacent main pipes 11 are connected through the transfer U-shaped pipes 12, so that the fluid can flow evenly between the multiple main pipes 11. The ends of the main pipes 11 at the uppermost and lowermost sides are connected to the connecting pipes 13, and the connecting pipes 13 are respectively connected to the water inlet pipe 2 and the water outlet pipe 21, thus forming a complete fluid channel. This connection method ensures that the fluid can smoothly enter the tube bundle body 1 from the water inlet pipe 2, and after being distributed by the main pipes 11 and the transfer U-shaped pipes 12, finally flows out from the water outlet pipe 21, realizing the fluid circulation path required for the basic heat exchange function of the air-cooled heat exchanger tube bundle.

[0047] The adaptive flow guiding assembly is pre-installed on the main pipe 11. Specifically, it is fixed at a position near the end of the main pipe 11 through the mounting ring 41 of the support structure 4, and two support structures 4 are installed on each main pipe 11. The mounting ring 41 ensures the tight connection between the adaptive flow guiding assembly and the main pipe 11, providing a stable foundation for subsequent work. The support rod 42 in the support structure 4 is fixedly connected to the mounting ring 41 as a whole. The combination of the sliding cavity 421, the sliding column 6 and the spring 62 inside the support rod 42 prepares for the position adjustment of the upper filter frame 5. The end of the sliding column 6 located outside the support rod 42 is fixedly connected to the lower side of the upper filter frame 5, and the side wall of the upper filter frame 5 between the two support structures 4 is fixedly connected to the lower filter frame 51, thus forming a complete adaptive flow guiding assembly. This connection method enables the upper filter frame 5 and the lower filter frame 51 to move synchronously according to the movement of the sliding column 6, so as to realize the adjustment of the air flow path.

[0048] Heat exchange under normal wind conditions: After the fan is started, when the wind force is small, the elastic force of the spring 62 keeps the sliding column 6 at the bottom of the sliding cavity 421. At this time, the adaptive flow guiding assembly is in the initial state. The air flows through the air-cooled heat exchanger tube bundle under the drive of the fan. The air first encounters the upper filter frame 5 and the lower filter frame 51. Since the upper filter frame 5 is U-shaped and the lower filter frame 51 is a box-shaped structure with a hollow top, and the filter slots 52 are staggeredly arranged and a filter screen plate is attached to the outside, the air needs to bypass these structures, and when passing through the filter slots 52, tiny dust particles or fine dust and other impurities will be filtered out by the filter screen plate. The flow direction and speed of the air are changed, so that the residence time of the air outside the tube bundle is extended, thereby performing a certain degree of heat exchange with the fluid in the main pipe 11.

[0049] After the fan starts, when the wind force is small, the elastic force of the spring 62 keeps the sliding column 6 at the bottom of the sliding cavity 421. At this time, the adaptive flow guiding component is in the initial state. The air flows towards the tube bundle under the drive of the fan and first contacts the upper filter frame 5 and the lower filter frame 51. The upper filter frame 5 is U-shaped, and the lower filter frame 51 is a box-shaped structure with a hollow top. The filter grooves 52 are arranged staggeredly, and filter screen plates are also attached to the outside of the filter grooves 52. When the air passes through these structures, its flow direction is changed, and the filter screen plates will filter out tiny dust particles, fine dust and other impurities in the air, making the air flowing through the tube bundle relatively clean. When the air passes through the filter frame structure, it will stay to a certain extent, so as to conduct preliminary heat exchange with the fluid in the main pipe 11.

[0050] When the wind force increases, the air generates a greater acting force on the filter frame (mainly the upper filter frame 5 because its cross-section is U-shaped and the windward area is larger). Since the upper filter frame 5 is fixedly connected to the sliding column 6, this acting force will cause the upper filter frame 5 to move upward, and then drive the sliding column 6 to slide upward in the sliding cavity 421. Also, because the upper filter frame 5 and the lower filter frame 51 are fixedly connected, the lower filter frame 51 will also move upward accordingly. This change in position further disturbs the air flow, making the air flow path more complex. Specifically, it is reflected in the change in the distance between it and the main pipe 11 at its upper end (refer to Figure 13 and 14 ).

[0051] Specifically, there is a certain gap in the initial state, and the air can flow through this gap and the filter grooves 52 of the filter frame relatively smoothly to exchange heat with the main pipe 11. As the filter frame moves upward, the size of the gap changes, and the originally relatively stable air flow route is broken. For example, the air could originally enter more directly from the area near the bottom of the main pipe 11, pass through the filter frame, skim near the outer surface of the main pipe 11 and then flow out. But now due to the change in distance, the air needs to approach the outer surface of the main pipe 11 at a new angle and along a new trajectory, and may need to deflect upward by a certain angle or bypass some blocking areas generated by the movement of the filter frame to continue the subsequent flow. This makes the air flow path become complex. The upper filter frame 5 is U-shaped, and the lower filter frame 51 is a box-shaped structure with a hollow top. After they move upward, the overall positional relationship relative to the main pipe 11 changes. The U-shaped upper filter frame 5 will form different blocking and guiding effects on the air. Originally, the air could enter relatively smoothly from one side of the U-shaped opening. Now, due to the position change, the air inlet direction is more likely to be guided to the two sides or the bottom of the U-shaped area, and then it can only pass through after complex detours.

[0052] In addition, in the initial state, the air flow around the filter rack is relatively stable and regular, and the interaction between the air around the filter rack and the air in the farther area is in a balanced state. However, when the filter rack moves, this balance is broken, and the air around it will be squeezed or attracted to a new position, resulting in more mixing and collision with the air flowing normally around. For example, the air that originally flowed smoothly will be squeezed by the moved filter rack and flow to other areas, and then converge with the air coming from other directions, making the air flow outside the entire tube bundle disordered, with a more diverse and complex flow path, thus enabling more sufficient contact with the outer surface of the main pipe 11, extending the residence time, and enhancing the heat exchange effect.

[0053] When the air faces the upper filter rack 5 and the lower filter rack 51 with changed positions, it takes more time to bypass these structures, which greatly extends the residence time of the air outside the tube bundle. At the same time, the filter grooves 52 and the filter plates still continuously play a filtering role. The extended residence time enables the air to more fully exchange heat with the fluid in the tube bundle body 1, thereby improving the cooling efficiency of the air-cooled heat exchanger tube bundle.

[0054] Embodiment 2, referring to Figures 5 - 12 , the cleaning assembly includes an air collecting groove 8, a main air inlet pipe 81, a rotating mechanism 7, a connecting rod 9, a wiping block 91, an air guiding channel 61 opened in the sliding column 6, and an annular cavity opened in the mounting ring 41. The rotating mechanism 7 is rotatably arranged in the annular cavity. The air collecting groove 8 and the main air inlet pipe 81 are both opened on the top wall of the upper filter rack 5 and are arranged close to the mounting ring 41. The air collecting groove 8 is communicated with the main air inlet pipe 81. The end of the main air inlet pipe 81 away from the air collecting groove 8 penetrates the side wall of the upper filter rack 5. The end of the air guiding channel 61 penetrates the upper and lower side walls of the sliding column 6. A notch matching the air guiding channel 61 is opened at the bottom of the sliding cavity 421. The sliding cavity 421 is communicated with the annular cavity through this notch. When the air flow passes through the filter rack, a part of the air flow will be guided into the air collecting groove 8 (refer to Figure 12 ).

[0055] Furthermore, the end of the main air inlet pipe 81 away from the air collecting groove 8 is communicated with the upper end of the air guiding channel 61. Side air inlet pipes 82 are opened on both sides of the main air inlet pipe 81. One end of the side air inlet pipe 82 penetrates the side wall of the air collecting groove 8, and the other end penetrates the side wall of the main air inlet pipe 81, which can increase the diversity of the air intake volume and the air intake direction, ensure more sufficient and stable gas supply, and ensure that the rotating mechanism 7 can be effectively driven to rotate. The air flow in the air collecting groove 8 will enter the air guiding channel 61 through the main air inlet pipe 81 and the side air inlet pipes 82, and finally be guided into the annular cavity to drive the rotating mechanism 7 to rotate.

[0056] The rotating mechanism 7 is composed of a ferrule 71, two limiting rings 72 and multiple baffles 73. The limiting rings 72 and the baffles 73 are both fixed on the ferrule 71. The limiting rings 72 are located on both sides of the ferrule 71, and the baffles 73 are located between the two limiting rings 72. The limiting rings 72 are abutted against the side wall of the annular cavity, and there is a gap between the baffles 73 and the inner wall of the annular cavity. The air flow entering the annular cavity will push the baffles 73, thereby driving the entire rotating mechanism 7 to rotate. A limiting ring groove 43 is formed on the side wall of the mounting ring 41 facing the lower filter frame 51. The gas entering the annular cavity will finally flow out from the limiting ring groove 43. The side wall of the limiting ring 72 facing the lower filter frame 51 is fixedly connected to the connecting rod 9. The connecting rod 9 is arranged to match the limiting ring groove 43 to ensure smooth movement. An installation groove is formed at the upper end of the wiping block 91. The wiping block 91 is snap-fitted and installed on the connecting rod 9 through the installation groove to ensure that the wiping block 91 can move synchronously with the connecting rod 9 and is also convenient for disassembly and assembly. The bottom of the wiping block 91 is abutted against the outer side wall of the main pipe 11 to ensure effective cleaning of the side wall of the main pipe 11, thereby improving the heat exchange efficiency of the air-cooled heat exchanger tube bundle. When the rotating mechanism 7 rotates, the connecting rod 9 will also move accordingly, and then the wiping block 91 thereon can be driven to rotate along the outer side of the main pipe 11 to dynamically clean the outer side wall of the main pipe 11, and at the same time, the flow direction of the air flow can be changed, making the heat exchange of the air flow to the main pipe 11 more uniform.

[0057] It should be noted that the inner frame of the wiping block 91 is made of a metal structure, and the outer layer is wrapped with a fiber fabric after anti-pilling treatment. Among the outer layer materials of the wiping block 91, if a fiber fabric is used, a mixed fabric containing a certain amount of heat-conducting fibers can be selected, such as a fiber fabric added with carbon fiber. Carbon fiber has a high thermal conductivity and can help the heat dissipate from the surface of the tube bundle to a certain extent. Moreover, it has strong adsorption and can adsorb the impurities cleaned. At the same time, in order to ensure the service life of the wiping block 91 during the cleaning process, the fiber fabric also needs to have a certain degree of wear resistance to avoid being damaged too quickly during the wiping process. For the internal support, if it is a metal frame, a high thermal conductivity copper-nickel alloy can be selected. Its own thermal conductivity is relatively high and it also helps heat conduction. The frame is designed into a concave-convex structure matching the shape of the main pipe 11, which can fit more closely to the outer surface of the main pipe 11, remove the dust accumulated on the outer side wall of the main pipe 11 to the greatest extent, ensure the cleanliness of the surface of the main pipe 11, and help maintain the good heat exchange performance of the air-cooled heat exchanger tube bundle.

[0058] In this embodiment, when the fan operates, the air flow passes through the filter frames (the upper filter frame 5 and the lower filter frame 51). A part of the air flow is guided into the air collecting groove 8. The air flow entering the air collecting groove 8 will enter the air guiding channel 61 through the main air inlet pipeline 81 and the side air inlet pipelines 82 on both sides thereof. Since the bottom of the sliding cavity 421 is communicated with the air guiding channel 61 through a notch, the air flow can enter the annular cavity in the mounting ring 41.

[0059] In the annular cavity, the airflow impacts the baffle 73 of the rotating mechanism 7. Because there is a gap between the baffle 73 and the inner wall of the annular cavity, and the limiting ring 72 limits the axial movement of the rotating mechanism 7, the force of the airflow on the baffle 73 causes the rotating mechanism 7 to rotate around its central axis. When the rotating mechanism 7 rotates, the connecting rod 9 fixedly connected to the limiting ring 72 moves smoothly in the limiting ring groove 43. Since the wiping block 91 is clamped on the connecting rod 9 through the mounting groove, the wiping block 91 also moves synchronously. The bottom of the wiping block 91 is in close contact with the outer wall of the main pipe 11. During its movement, the anti-hair removal fiber on its outer layer is The carbon fiber fabric (such as a hybrid fabric containing carbon fiber) absorbs and cleans the dust on the outer wall of the main pipe 11 by virtue of its own adsorption property, while the inner metal frame (such as a high thermal conductivity copper-nickel alloy frame) provides structural support for the wiping block 91 on the one hand to ensure that its shape fits well with the outer surface of the main pipe 11, and on the other hand, with its high thermal conductivity, it promotes the heat to be dissipated from the surface of the main pipe 11 through the wiping block 91 to a certain extent, thereby improving the heat exchange efficiency of the air cooler tube bundle and keeping the surface of the main pipe 11 clean, reducing the adverse effect of dust accumulation on heat exchange, and ensuring the long-term stable operation of the air cooler tube bundle.

[0060] When the rotating mechanism 7 is driven by the airflow to rotate in the annular cavity, since the side wall of the limit ring 72 facing the lower filter frame 51 is fixedly connected to the connecting rod 9, the connecting rod 9 will make a circular motion with the rotation of the rotating mechanism 7. The wiping block 91 is clamped on the connecting rod 9 through the mounting groove at the upper end, so that the wiping block 91 will make a circular motion along the outer wall of the main pipe 11 driven by the connecting rod 9, thereby realizing dynamic cleaning of the outer wall of the main pipe 11.

[0061] In this dynamic cleaning process, the anti-hair removal treated fiber fabric (such as a mixed fabric containing thermal conductive fibers) wrapped on the outer layer of the wiping block 91 is in continuous contact and friction with the outer wall of the main pipe 11, and uses its adsorption property to adsorb dust and impurities on the surface of the main pipe 11, so as to prevent dust from accumulating on the surface of the main pipe 11 and affecting the heat exchange efficiency. In addition, the inner metal frame of the wiping block 91 (such as a high thermal conductivity copper-nickel alloy frame) is designed to have a concave-convex structure that matches the shape of the main pipe 11, which can provide reliable structural support for the wiping block 91 and ensure that it fits well with the outer surface of the main pipe 11 to achieve comprehensive and uniform cleaning. In addition, with the help of the high thermal conductivity of the metal frame, heat is promoted to be dissipated from the surface of the main pipe 11 through the wiping block 91, further improving the heat exchange efficiency, and ensuring the stability and durability of the wiping block 91 during long-term use, and can fit closely to the outer surface of the main pipe 11, ensuring that effective wiping and cleaning can be performed at pipe walls at different positions and in different shapes, so that the outer wall of the entire main pipe 11 can be cleaned more comprehensively and evenly.

[0062] While the wiping block 91 rotates along the outer side of the main pipe 11, it also has a certain disturbing effect on the surrounding air flow, thereby changing the flow direction of the air flow. Originally, there may be situations where the local flow velocity is uneven and the heat exchange degree is inconsistent when the air flow passes through the outer surface of the main pipe 11. The rotation of the wiping block 91 causes the air flow to be guided in different directions when passing through the main pipe 11, and the areas with originally faster or slower flow velocities will redistribute the air flow due to the blocking and guiding of the wiping block 91.

[0063] For example, when the wiping block 91 rotates to a certain position, it will squeeze the air flow that originally flows straight through one side of the main pipe 11 to the side or shunt it upward or downward, so that this part of the air flow can cover other areas on the surface of the main pipe 11 where the original air flow is difficult to fully contact, allowing more air flow to exchange heat with the outer surface of the main pipe 11. Moreover, this dynamic process of changing the air flow direction is continuous. As the wiping block 91 rotates along the circumferential direction of the main pipe 11, the outer surfaces of each part of the main pipe 11 will be subjected to this re-distribution and guiding effect on the air flow, thereby making the heat exchange of the air flow with the main pipe 11 more uniform, improving the heat exchange effect of the entire air-cooled heat exchanger tube bundle, and ensuring its stable and efficient operation.

[0064] In summary, the cleaning assembly uses the air flow generated when the air flow passes through the filter rack during the operation of the fan as the power source to drive the rotation mechanism 7 to rotate, and then drives the wiping block 91 to automatically perform dynamic cleaning, without the need to provide additional complex power devices, reducing the equipment operation cost and maintenance difficulty, and realizing the automatic cleaning and heat exchange performance optimization of the air-cooled heat exchanger tube bundle during operation; through the rotation of the wiping block 91, dust and impurities can be effectively adsorbed and cleaned, preventing dust from accumulating on the surface of the main pipe 11, ensuring the cleanliness of the surface of the main pipe 11, and reducing the problem of heat exchange efficiency decline caused by dust accumulation. When the wiping block 91 rotates, it can also disturb the surrounding air flow, change the air flow direction, redistribute and guide the originally uneven flow velocity and uneven heat exchange degree air flow, so that more air flow can cover the areas on the surface of the main pipe 11 that are difficult to fully contact, improving the heat exchange uniformity between the air flow and the outer surface of the main pipe 11, and further improving the heat exchange effect of the entire air-cooled heat exchanger tube bundle, ensuring its stable and efficient operation.

[0065] The above is only the preferred embodiment of the present invention and is not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An air-cooled heat exchanger tube bundle, comprising a plurality of tube bundle bodies (1), and two relatively arranged main frames (3) and connecting frames (31). A plurality of mounting holes (30) are formed in the main frames (3). The inner sides of the upper and lower ends of the main frames (3) are welded to the ends of the connecting frames (31). The tube bundle body (1) is composed of a main pipe (11), a transfer U-shaped pipe (12), and a connecting pipe (13). The main pipe (11) passes through the mounting holes (30) and is installed between the two main frames (3). The ends of adjacent main pipes (11) are connected and communicated with each other through the transfer U-shaped pipe (12). The ends of the main pipes (11) located on the uppermost side and the lowermost side are communicated with the connecting pipe (13). The end of the connecting pipe (13) located on the upper side is communicated with a water inlet pipe (2), and the end of the connecting pipe (13) located on the lower side is communicated with a water outlet pipe (21). It is characterized in that, Further comprising: An adaptive flow guiding assembly: The adaptive flow guiding assembly is arranged on the main pipe (11); The adaptive flow guiding assembly includes a support structure (4), an upper filter frame (5) and a lower filter frame (51). The support structure (4) is composed of an installation ring (41) and support rods (42). The support rods (42) are fixedly connected to the installation ring (41) as a whole. A sliding cavity (421) is formed inside the support rod (42). A sliding column (6) and a spring (62) are arranged in the sliding cavity (421). The end of the sliding column (6) penetrates through the top wall of the support rod (42) and extends to the outside of the support rod (42). The spring (62) is sleeved outside the sliding column (6) located in the sliding cavity (421). The upper end of the support rod (42) points in the same direction as the flow direction of the fan wind; The support structure (4) is fixedly installed on the main pipe (11) and close to the end of the main pipe (11). The number of support structures (4) on the same main pipe (11) is two. The end of the sliding column (6) located outside the support rod (42) is fixedly connected to the lower side of the upper filter frame (5). The side wall of the upper filter frame (5) between the two support structures (4) is fixedly connected to the lower filter frame (51); The cross-section of the upper filter frame (5) is U-shaped. The lower filter frame (51) is a box-shaped structure with a hollow top. Filter grooves (52) are formed on the top wall of the upper filter frame (5) and the bottom wall of the lower filter frame (51). The filter grooves (52) on the upper filter frame (5) and the lower filter frame (51) are arranged staggeredly. A filter screen plate is attached to the outside of the filter groove (52); In the initial state, the bottom of the sliding column (6) abuts against the bottom of the sliding cavity (421), and there is a gap between the upper end of the upper filter frame (5) and the main pipe (11) above it; The adaptive flow guiding assembly is pre-installed on the main pipe (11), and then the main pipe (11) is installed on the main frame (3) through the installation hole (30). Subsequently, the welding of the transfer U-shaped pipe (12) and the connecting pipe (13) is carried out. Finally, the water inlet pipe (2) and the water outlet pipe (21) are welded and connected to the corresponding connecting pipes (13); A cleaning assembly: The cleaning assembly is arranged between the adaptive flow guiding assembly and the main pipe (11).

2. The air-cooled heat exchanger tube bundle according to claim 1, wherein, The cleaning component includes an air collecting groove (8), a main air inlet pipeline (81), a rotating mechanism (7), a connecting rod (9), a wiping block (91), an air guiding channel (61) opened in a sliding column (6), and an annular cavity opened in a mounting ring (41). The rotating mechanism (7) is rotatably arranged in the annular cavity. The air collecting groove (8) and the main air inlet pipeline (81) are both opened on the top wall of the upper filter frame (5) and are arranged close to the mounting ring (41). The air collecting groove (8) is communicated with the main air inlet pipeline (81). The end of the main air inlet pipeline (81) far from the air collecting groove (8) penetrates through the side wall of the upper filter frame (5). The end of the air guiding channel (61) penetrates through the upper and lower side walls of the sliding column (6). A notch matching the air guiding channel (61) is opened at the bottom of the sliding cavity (421). The sliding cavity (421) is communicated with the annular cavity through this notch.

3. The air cooler tube bundle according to claim 2, characterized in that, The end of the main air inlet pipeline (81) far from the air collecting groove (8) is communicated with the upper end of the air guiding channel (61). Side air inlet pipelines (82) are opened on both sides of the main air inlet pipeline (81). One end of the side air inlet pipeline (82) penetrates through the side wall of the air collecting groove (8), and the other end penetrates through the side wall of the main air inlet pipeline (81).

4. The air-cooled heat exchanger tube bundle according to claim 2, wherein, The rotating mechanism (7) is composed of a clamping sleeve (71), two limiting rings (72), and a plurality of baffles (73). The limiting rings (72) and the baffles (73) are both fixed on the clamping sleeve (71). The limiting rings (72) are located on both sides of the clamping sleeve (71). The baffles (73) are located between the two limiting rings (72). The limiting rings (72) are in contact with the side wall of the annular cavity. There is a gap between the baffles (73) and the inner wall of the annular cavity. A limiting ring groove (43) is opened in the side wall of the mounting ring (41) facing the lower filter frame (51). The side wall of the limiting ring (72) facing the lower filter frame (51) is fixedly connected with the connecting rod (9). The connecting rod (9) is arranged to match the limiting ring groove (43). An installation groove is opened at the upper end of the wiping block (91). The wiping block (91) is clamped and installed on the connecting rod (9) through the installation groove. The bottom of the wiping block (91) is in contact with the outer side wall of the main pipe (11).

5. The air-cooled heat exchanger tube bundle according to claim 2, characterized in that, The inner frame of the wiping block (91) is made of a metal structure, and the outer layer is wrapped with a fiber fabric after anti - hair - loss treatment. The frame is designed into a concave - convex structure matching the shape of the main pipe (11).

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