Straight-through pipe belt type aluminum alloy heat exchanger for transformer

Abstract

The invention relates to the technical field of heat exchangers for transformers, and discloses a straight-through pipe belt type aluminum alloy heat exchanger for transformers, which comprises a heat exchanger main body, the heat exchanger main body comprises an oil passing vertical plate, turbulence fins, a top oil chamber and an oil duct, a cleaning device is mounted on one side of the oil passing vertical plate, and the cleaning device comprises a cleaning block. A cleaning block is arranged on the surface of the turbulent flow fin, a conical spraying block used for cleaning dust on the surface of the turbulent flow fin is installed in the cleaning block, and a pneumatic device used for supplying air into the conical spraying block is arranged in the cleaning block. The problem that in the background technology, dust accumulated on the surfaces of turbulence fins can reduce the heat exchange effect of a heat exchanger, and then a transformer is overheated in the using process is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchangers for transformers, and specifically to a straight-tube belt-type aluminum alloy heat exchanger for transformers. Background Art

[0002] A transformer is an electrical device mainly used for changing the voltage level of alternating current. It operates based on the principle of electromagnetic induction. Voltage transformation is achieved through two or more coils (i.e., windings) that are insulated from each other and wound around the same iron core. When one winding is connected to an AC power supply, an alternating magnetic flux is generated in the iron core, and this magnetic flux induces an electromotive force in the other winding, thereby achieving voltage increase or decrease. Transformers play a crucial role in the power system. They enable the long-distance, efficient transmission, distribution, and use of electrical energy, and also contribute to improving the stability and reliability of the power system.

[0003] A heat exchanger for a transformer is a heat exchange device specifically designed for a transformer system. It is mainly used to effectively transfer the heat generated during the operation of the transformer to ensure the normal operation of the transformer and extend its service life.

[0004] In outdoor environments or industrial parks with high dust content, the straight-tube belt-type aluminum alloy heat exchangers used in transformers often face severe heat dissipation challenges. In these areas, due to the high dust content and the large number of trees usually planted for environmental protection purposes, the suspended particulate matter in the air increases.

[0005] When in such a harsh working environment for a long time, a large amount of dust will inevitably adhere to the surface of the turbulent fins of the heat exchanger. The accumulation of dust has a significant impact on the heat dissipation effect of the turbulent fins.

[0006] First of all, the dust covering layer will hinder the heat exchange between the fins and the air, resulting in an increase in thermal resistance and a decrease in heat dissipation performance.

[0007] Secondly, the adhesion of dust may also change the roughness of the fin surface, affecting the dynamic characteristics of air flow and further reducing the heat dissipation efficiency.

[0008] In addition, the accumulation of dust may also cause blockage between the fins, reducing the air flow channels and exacerbating the problem of poor heat dissipation, which may further lead to overheating problems during the use of the transformer; therefore, it does not meet the existing requirements, and for this reason, we propose a straight-tube belt-type aluminum alloy heat exchanger for transformers. Summary of the Invention

[0009] The present invention provides a direct pipe belt type aluminum alloy heat exchanger for transformers, which has the beneficial effect of regularly cleaning the dust on the surface of the turbulent fins, and solves the problem that the accumulation of dust on the surface of the turbulent fins mentioned in the above background art will reduce the heat exchange effect of the heat exchanger, and further cause the transformer to overheat during use.

[0010] The present invention provides the following technical solution: A direct pipe belt type aluminum alloy heat exchanger for transformers, including a heat exchanger main body, the heat exchanger main body includes an oil passing vertical plate, turbulent fins, a top oil chamber and an oil passage, and is characterized in that: A cleaning device is installed on one side of the oil passing vertical plate, the cleaning device includes a cleaning block, and a conical spray block for cleaning the dust on the surface of the turbulent fins is installed in the cleaning block, and a pneumatic device is arranged in the cleaning block.

[0011] The pneumatic device is used to supply air into the conical spray block.

[0012] As an optional solution of the direct pipe belt type aluminum alloy heat exchanger for transformers of the present invention, wherein: The cleaning device includes a sliding track installed on one side of the oil passing vertical plate, a driving slider is slidably connected in the sliding track, the sliding of the driving slider in the sliding track is driven by a motor screw drive system, the other end of the driving slider is fixedly connected with the cleaning block, an installation groove is opened in the cleaning block, the conical spray block is installed in the installation groove, and a narrow groove is opened in the conical spray block.

[0013] As an optional solution of the direct pipe belt type aluminum alloy heat exchanger for transformers of the present invention, wherein: A piston chamber is opened in the cleaning block, a piston plate is slidably connected in the piston chamber, a one-way air inlet is communicated with the bottom of the piston chamber, one end of the piston chamber is communicated with a one-way air outlet, one end of the one-way air outlet is communicated with a connecting hose, the other end of the connecting hose is communicated with the narrow groove, and two groups of the piston chamber, the piston plate, the one-way air inlet, the one-way air outlet and the connecting hose are provided.

[0014] As an optional solution of the direct pipe belt type aluminum alloy heat exchanger for transformers of the present invention, wherein: The pneumatic device includes an installation drive groove and a pull rod chute opened in the cleaning block, a piston pull rod is slidably connected in the pull rod chute, one end of the piston pull rod is rotatably connected to the bottom of the piston plate, the other end of the piston pull rod is rotatably connected in a swing rod, the swing rod is fixedly connected to the side wall of a fixed shaft, and the fixed shaft is rotatably connected in the installation drive groove.

[0015] As an alternative embodiment of the straight-through pipe belt type aluminum alloy heat exchanger for transformers according to the present invention, wherein: one end of the swing rod is rotatably connected to a swing telescopic rod, the other end of the swing telescopic rod is rotatably connected to an eccentric shaft, the eccentric shaft is fixedly connected to one side of a fixed disk, the fixed disk is rotatably connected in the installation drive groove, one side of the swing telescopic rod is fixedly connected to a vertical slider, and the other end of the vertical slider is slidably connected in a vertical groove, and the vertical groove is opened in the cleaning block.

[0016] As an alternative embodiment of the straight-through pipe belt type aluminum alloy heat exchanger for transformers according to the present invention, wherein: the fixed disk is connected to a pulley through a belt drive, the bottom of the pulley is fixedly connected to a tooth shaft, the tooth shaft is meshed and connected to a first tooth groove, the first tooth groove is opened on one side of the sliding track, the side wall of the tooth shaft is rotatably connected to a mounting rod, and the mounting rod is fixedly connected to one side of the active slider.

[0017] As an alternative embodiment of the straight-through pipe belt type aluminum alloy heat exchanger for transformers according to the present invention, wherein: a swing air jet device is arranged in the cleaning block, the swing air jet device includes a swing groove opened in the cleaning block, a swing shaft is rotatably connected in the swing groove, one side of the swing shaft is fixedly connected to the side wall of the conical spray block, an inner shaft groove and an inner shaft track groove are opened in the swing shaft, an inner shaft rod is inserted in the inner shaft groove, a track slider is fixedly connected to the side wall of the inner shaft rod, and the track slider is slidably connected in the inner shaft track groove.

[0018] As an alternative embodiment of the straight-through pipe belt type aluminum alloy heat exchanger for transformers according to the present invention, wherein: one end of the inner shaft rod is fixedly connected to a swing drive rod, the swing drive rod is slidably connected in a swing drive groove, the swing drive groove is opened in the cleaning block, one side of the swing drive rod is connected to the swing drive groove through a swing spring, one end of the swing drive rod is fixedly connected to a drive block, and the drive block is abutted and driven by the swing of the swing rod.

[0019] As an alternative embodiment of the straight-through pipe belt type aluminum alloy heat exchanger for transformers according to the present invention, wherein: a guiding and adjusting device is arranged in the conical spray block, the guiding and adjusting device includes an adjusting groove opened in the conical spray block, an adjusting rod is slidably connected in the adjusting groove, a drive rack is fixedly connected to one side of the adjusting rod, the drive rack is meshed and connected to a rotating tooth shaft, a guiding rod is fixedly connected to the top of the rotating tooth shaft, the guiding rod is arranged in the narrow groove, the adjusting rod is abutted by the inner shaft rod, and the adjusting rod and the adjusting groove are connected through a second spring.

[0020] As an alternative solution of the straight-through pipe belt type aluminum alloy heat exchanger for transformers according to the present invention, wherein: turbulence fins are installed between two adjacent oil-passing vertical plates, top oil chambers are installed at both ends of the oil-passing vertical plates, and oil channels are installed at the tops of the top oil chambers.

[0021] The present invention has the following beneficial effects: 1. The straight-through pipe belt type aluminum alloy heat exchanger for transformers is powered by a solar panel, which is energy-saving and environmentally friendly; the narrow groove design in the conical spray block enhances the air flow velocity and improves the dust cleaning efficiency; the local negative pressure area formed when the gas flows out of the extremely narrow space helps to attract and clean the surrounding dust; ensuring the cleanliness of the surface of the turbulence fins and maintaining their good heat dissipation effect not only improves the automation degree of dust cleaning but also ensures the heat dissipation performance of the turbulence fins, thus ensuring the normal use of the transformer.

[0022] 2. The straight-through pipe belt type aluminum alloy heat exchanger for transformers realizes the up-and-down swing of the conical spray block through the design of the swing jet device. This design not only enhances the dust cleaning effect on the surface of the turbulence fins, especially for the inclined design and dead corners, improving the comprehensiveness and efficiency of cleaning, but also, the restriction of the track groove in the shaft ensures that the conical spray block swings within a specified range, maintaining the accuracy and stability of cleaning, thus ensuring the heat dissipation performance of the turbulence fins. The overall design is ingenious and practical.

[0023] 3. The straight-through pipe belt type aluminum alloy heat exchanger for transformers can change the air flow direction when cleaning dust through the design of the guiding and adjusting device, enhancing the cleaning effect on the dead corners of the turbulence fins. The piston movement of the rod in the shaft drives the adjusting rod to slide in the adjusting groove, and with the reset function of the second spring, the reciprocating swing of the adjusting rod and the driving rack is realized, thereby driving the guiding rod to swing and adjusting the air flow direction. The introduction of the second spring slows down the reset speed of the adjusting rod, ensuring sufficient cleaning time for the dead corners and improving the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the main structure of the heat exchanger according to the present invention.

[0025] Figure 2 It is a schematic diagram of the structure of the oil-passing vertical plate, turbulence fins and cleaning device according to the present invention.

[0026] Figure 3 It is a schematic diagram of the connection between the cleaning block and the sliding track according to the present invention.

[0027] Figure 4 It is a partial structure schematic diagram of the cleaning block and the sliding track according to the present invention.

[0028] Figure 5 It is a schematic cross-sectional structure diagram of the cleaning device according to the present invention.

[0029] Figure 6 For the present invention Figure 5 Schematic enlarged view of the structure at position A in

[0030] Figure 7 For the present invention Figure 5 Schematic enlarged view of the structure at position B in

[0031] Figure 8 For the present invention Figure 5 Schematic enlarged view of the structure at position C in

[0032] Figure 9 For the present invention Figure 5 Schematic enlarged view of the structure at position D in

[0033] Figure 10 Schematic structural view of the guiding and adjusting device of the present invention

[0034] In the figure: 1. Heat exchanger main body; 11. Vertical oil passage plate; 12. Turbulent fins; 13. Top oil chamber; 14. Oil passage; 2. Cleaning device; 21. Cleaning block; 22. Conical spraying block; 23. Installation groove; 24. Connecting hose; 25. Narrow groove; 26. Piston chamber; 27. Piston plate; 28. Unidirectional air inlet; 29. Unidirectional air outlet; 210. Sliding track; 211. Active slider; 212. Motor screw drive system; 3. Pneumatic device; 31. Piston pull rod; 32. Pull rod sliding groove; 33. Swing rod; 34. Fixed shaft; 35. Installation drive groove; 36. Fixed disc; 37. Eccentric shaft; 38. Swing telescopic rod; 39. Vertical groove; 310. Vertical slider; 311. Belt; 312. Belt pulley; 313. Tooth shaft; 314. First tooth groove; 315. Installation rod; 4. Swing jet device; 41. Swing groove; 42. Swing shaft; 43. Inner shaft groove; 44. Inner shaft track groove; 45. Inner shaft rod; 46. Track slider; 47. Swing drive groove; 48. Swing drive rod; 49. Swing spring; 410. Drive block; 5. Guiding and adjusting device; 51. Adjusting groove; 52. Adjusting rod; 53. Drive rack; 54. Rotating tooth shaft; 55. Guiding rod; 56. Second spring. Detailed implementation manners

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] Embodiment 1. This embodiment aims to facilitate the solution of the problem that the accumulation of dust on the surface of the turbulent fins 12 will reduce the heat exchange effect of the heat exchanger, which will in turn cause the transformer to overheat during use. Please refer to Figures 1 to 10 , a straight-through tube belt type aluminum alloy heat exchanger for a transformer, comprising a heat exchanger main body 1. The heat exchanger main body 1 includes an oil-passing vertical plate 11, turbulent fins 12, a top oil chamber 13 and an oil passage 14. A cleaning device 2 is installed on one side of the oil-passing vertical plate 11. The cleaning device 2 includes a cleaning block 21. A conical spraying block 22 for cleaning the dust on the surface of the turbulent fins 12 is installed in the cleaning block 21. A pneumatic device 3 for supplying air to the conical spraying block 22 is arranged in the cleaning block 21.

[0037] Turbulent fins 12 are installed between two adjacent oil-passing vertical plates 11. Top oil chambers 13 are installed at both ends of the oil-passing vertical plate 11. An oil passage 14 is installed at the top of the top oil chamber 13.

[0038] The single layer of the aluminum alloy plate type radiator for the transformer is manufactured by the NOCLOCK soldering process. It mainly consists of: an oil chamber, a main board, side boards, cooling tubes, and turbulent fins 12. After being assembled by a core assembly unit, it is composed of a NB nitrogen protection continuous tunnel furnace for hard soldering. The overall sealing qualification rate of the first time is >99.6%; the layer spacing of the plate radiator is 80 - 150 mm.

[0039] Advantages: All components are made of 1 - 7 series aluminum alloy materials. Before hard soldering, they are all ultrasonically cleaned at high temperature. All components have no burrs, no metal particles inside, no oil stains on the surface of the components, and the cleanliness during assembly and welding is controllable, which can ensure the internal cleanliness of the single aluminum alloy plate type radiator to the greatest extent; After the product is subjected to atmosphere protection hard soldering, the brazing parts of all components are evenly penetrated by the brazing material, making them an integral whole, ensuring sufficient structural strength while being lightweight.

[0040] The oil passage is made of anti-rust aluminum alloy extrusion profile AA3059, with an overall wall thickness of 0.75 mm. The two side ports are designed in a rhombus shape, and the wall thickness of the rhombus angle is 1.5 mm, which is more impact-resistant and has higher strength. The oil passage adopts the aluminum extrusion process, and there is no residue of any metal and other impurities inside the oil passage, ensuring that the cleanliness can reach the standard; The turbulent fin 12 adopts a flat-top curved surface structure. The flat top is more conducive to increasing the welding contact area and improving the heat transfer efficiency. The width of the flat top is 3 - 8 mm, the thickness of the turbulent fin 12 is 0.25 - 0.5 mm, and the slope of the curved surface is 30° - 60°. The transformer oil can directly transfer heat to the turbulent fin 12 through the cooling pipe. Heat exchange occurs through the contact between the turbulent fin 12 and the air. The disordered heat radiation passes through the inclined curved fin, forming an upward flow field of heat, quickly driving the exchanged heat to dissipate upward, thereby achieving the purpose of efficient heat dissipation. The material is the same anti-rust aluminum alloy grade AA4343 / 3003 / 4343-Zn1.5, in which 1.2% - 2.0% zinc element is added as anodic reaction ions. When the heat exchanger undergoes a weak battery corrosion reaction, the fin material is preferentially sacrificed to protect the oil channel cooling pipe, thereby greatly improving the overall corrosion resistance of the aluminum alloy plate heat sink. After CFD simulation analysis, the top of the oil chamber is designed to be an inclined structure, and the best angle is 6 - 12°, with the minimum flow resistance and the best heat transfer performance inside the heat exchanger. The main fin adopts a flanging structure. The outer flanging wraps the heat dissipation pipe by 5 - 6 mm to protect the weak welding part and prevent the weld from cracking and deforming due to thermal expansion. The inner side of the main fin fits the plane of the cooling pipe, and after the weld is filled, it is flush with the main fin. The purpose is to ensure that no paint or insulating oil accumulates whether the internal painting process or the internal insulating oil flushing process is adopted, and the internal resistance and the turbulence of the internal insulating oil can be effectively reduced during the operation of the fin radiator.

[0041] The cleaning device 2 includes a sliding track 210 installed on one side of the oil-passing vertical plate 11. A driving slider 211 is slidably connected in the sliding track 210. The sliding of the driving slider 211 in the sliding track 210 is driven by a motor screw drive system 212. The other end of the driving slider 211 is fixedly connected to a cleaning block 21. An installation groove 23 is opened in the cleaning block 21, and a conical spray block 22 is installed in the installation groove 23. A narrow groove 25 is opened in the conical spray block 22.

[0042] A piston chamber 26 is opened in the cleaning block 21. A piston plate 27 is slidably connected in the piston chamber 26. The bottom of the piston chamber 26 communicates with a one-way air inlet 28. One end of the piston chamber 26 communicates with a one-way air outlet 29. One end of the one-way air outlet 29 communicates with a connecting hose 24. The other end of the connecting hose 24 communicates with the narrow groove 25. The piston chamber 26, the piston plate 27, the one-way air inlet 28, the one-way air outlet 29, and the connecting hose 24 are provided in two groups.

[0043] The cleaning device 2 is designed to ensure that the dust on the surface of the turbulent fin 12 is cleaned. The motor-screw transmission system 212 mainly includes a motor, a screw, and a solar panel (this system is a prior art and will not be described in detail). The motor-screw transmission system 212 is powered by a solar panel. The motor-screw transmission system 212 accumulates electrical energy during the day and releases it at night to drive the active slider 211 to slide in the sliding track 210. During the synchronous sliding of the active slider 211 and the cleaning block 21 fixedly connected thereto, the piston plate 27 is driven by the pneumatic device 3 to perform piston motion in the piston chamber 26. With the one-way air inlet 28 and the one-way air outlet 29 connected, there is a continuous gas supply in the conical spray block 22. Through the injection of gas, the dust remaining on the surface of the turbulent fin 12 can be blown away, ensuring that the surface of the turbulent fin 12 feels clean and tidy, thereby ensuring the heat dissipation effect of the turbulent fin 12. The narrow groove 25 in the conical spray block 22 is designed to be extremely narrow, so that the gas flow rate can be increased when the gas passes through the area. Under the premise that the pressure output in the piston chamber 26 remains unchanged, when the gas flows out from the extremely narrow space, due to the sudden decrease in the cross-sectional area, according to the continuity equation of fluid mechanics, the gas flow rate will increase. This enhanced air flow speed helps to blow away or carry dust particles more effectively. At the same time, when the gas flows out quickly from the extremely narrow space, a local negative pressure area may be formed near the outlet. This negative pressure can attract the surrounding air (including the dust particles therein) to flow to the area, thereby helping to clean the dust.

[0044] The pneumatic device 3 includes an installation drive groove 35 and a pull rod slide groove 32 opened in the cleaning block 21. A piston pull rod 31 is slidably connected in the pull rod slide groove 32. One end of the piston pull rod 31 is rotatably connected to the bottom of the piston plate 27, and the other end of the piston pull rod 31 is rotatably connected in the swing rod 33. The swing rod 33 is fixedly connected to the side wall of the fixed shaft 34, and the fixed shaft 34 is rotatably connected in the installation drive groove 35.

[0045] One end of the swing rod 33 is rotatably connected to a swing telescopic rod 38, and the other end of the swing telescopic rod 38 is rotatably connected to an eccentric shaft 37. The eccentric shaft 37 is fixedly connected to one side of a fixed disk 36, and the fixed disk 36 is rotatably connected in the mounting drive groove 35. One side of the swing telescopic rod 38 is fixedly connected to a vertical slider 310, and the other end of the vertical slider 310 is slidably connected in a vertical groove 39, and the vertical groove 39 is opened in the cleaning block 21.

[0046] The fixed disc 36 is connected to the pulley 312 through the belt 311, and the bottom of the pulley 312 is fixedly connected to the gear shaft 313, the gear shaft 313 is meshed with the first tooth groove 314, the first tooth groove 314 is opened on one side of the sliding track 210, and the side wall of the gear shaft 313 is rotatably connected to the mounting rod 315, and the mounting rod 315 is fixedly connected to one side of the active slider 211.

[0047] The design of the pneumatic device 3 is used to control the piston movement of the piston plate 27 in the piston chamber 26. During the sliding process of the active slider 211 in the sliding track 210, the cleaning block 21 fixedly connected to one side of the active slider 211 and the mounting rod 315 mounted on one side of the active slider 211 slide downward synchronously. The toothed shaft 313 rotatably connected in the mounting rod 315 rotates continuously under the design of the first tooth groove 314. Driven by the belt 311, the fixed disk 36 is driven to rotate synchronously. Since the swing telescopic rod 38 is eccentrically rotatably connected to one side of the fixed disk 36, the swing telescopic rod 38 continuously slides up and down in the mounting drive groove 35. Due to the limitation of the vertical groove 39 and the vertical slider 310, it is ensured that the swing rod 33 rotatably connected to one end of the swing telescopic rod 38 continuously swings. Since the side wall of the swing rod 33 is connected to the piston plate 27 through the piston pull rod 31, through the continuous swing of the swing rod 33, the two piston plates 27 are driven to continuously perform piston movement in the piston chamber 26. This design ensures a stable gas output in the piston chamber 26 and provides a power source for the cleaning process. The sizes of the pulley 312 and the fixed disk 36 are inconsistent, and the diameter of the pulley 312 is much larger than the diameter of the fixed disk 36. Through this design, when the pulley 312 rotates one week, the fixed disk 36 has rotated many circles, thereby driving the piston chamber 26 to perform multiple swings. Through this design, the speed of the piston plate 27 performing piston movement can be increased, thereby improving the output efficiency of the cylinder system, ensuring the pressure of the gas output in the narrow groove 25, and further ensuring the cleaning effect of the cleaning device 2 on the dust on the surface of the turbulent fins 12.

[0048] Embodiment 2. The purpose of this embodiment is to facilitate the solution of the problem that due to the inclined design of the turbulent fins 12, when the conical spray block 22 is cleaning, there may be dead corners in the upper and lower positions that cannot be cleaned. This embodiment is an explanatory description based on Embodiment 1. Specifically, please refer to Figures 1 to 10 。

[0049] A swing jet device 4 is arranged in the cleaning block 21. The swing jet device 4 includes a swing groove 41 opened in the cleaning block 21. A swing shaft 42 is rotatably connected in the swing groove 41. One side of the swing shaft 42 is fixedly connected to the side wall of the conical spray block 22. An inner shaft groove 43 and an inner shaft track groove 44 are opened in the swing shaft 42. An inner shaft rod 45 is inserted in the inner shaft groove 43. A track slider 46 is fixedly connected to the side wall of the inner shaft rod 45. The track slider 46 is slidably connected in the inner shaft track groove 44.

[0050] One end of the inner shaft rod 45 is fixedly connected to a swing drive rod 48. The swing drive rod 48 is slidably connected in a swing drive groove 47. The swing drive groove 47 is opened in the cleaning block 21. One side of the swing drive rod 48 is connected to the swing drive groove 47 through a swing spring 49. One end of the swing drive rod 48 is fixedly connected to a drive block 410. The drive block 410 is driven by the swing of the swing rod 33.

[0051] During the swing of the swing rod 33, one end of it continuously touches and drives the drive block 410. Since the drive block 410 is fixedly connected to the swing drive rod 48 and under the elastic reset action of the swing spring 49, the swing drive rod 48 is continuously touched and reset, thereby driving the inner shaft rod 45 installed at the other end of the swing drive rod 48 to continuously perform piston motion in the inner shaft groove 43. At the same time, due to the design of the inner shaft track groove 44 and the track slider 46, the swing shaft 42 and the conical spray block 22 fixedly connected thereto continuously rotate. Through the design of the inner shaft track groove 44, the conical spray block 22 can only swing within a specified range, so that the conical spray block 22 continuously swings up and down during the process of cleaning the surface of the turbulent fins 12. Through this design, some dead corners of the inclined turbulent fins 12 can be initially cleaned, improving the cleaning effect and thus ensuring the heat dissipation effect of the turbulent fins 12.

[0052] Embodiment 3. This embodiment aims to promote the solution of the bending and inclined design of the turbulent fins 12, resulting in a large number of dead corners on the left and right sides of the turbulent fins 12, and the dust at the dead corner positions is not easy to clean. This embodiment is an explanatory description based on Embodiment 2. Specifically, please refer to Figures 1 to 10 .

[0053] A guiding and adjusting device 5 is arranged in the conical spray block 22. The guiding and adjusting device 5 includes an adjusting groove 51 opened in the conical spray block 22. An adjusting rod 52 is slidably connected in the adjusting groove 51. One side of the adjusting rod 52 is fixedly connected to a driving rack 53. The driving rack 53 is meshed with a rotating tooth shaft 54. The top of the rotating tooth shaft 54 is fixedly connected to a guiding rod 55. The guiding rod 55 is arranged in the narrow groove 25. The adjusting rod 52 is touched by the inner shaft rod 45. The adjusting rod 52 and the adjusting groove 51 are connected through a second spring 56.

[0054] The design of the guiding adjustment device 5 enables the cleaning device 2 to change the flow direction of the air flow during the dust cleaning process. During the continuous piston movement of the inner shaft rod 45 in the inner shaft groove 43, the top of the inner shaft rod 45 continuously abuts against the adjustment rod 52, driving the adjustment rod 52 to slide upward in the adjustment groove 51. At the same time, under the reset action of the second spring 56, the adjustment rod 52 continuously reciprocates in the adjustment groove 51, and drives the driving rack 53 fixedly connected thereto to swing synchronously. Due to the meshing connection between the driving rack 53 and the rotating gear shaft 54, the rotating gear shaft 54 and the guiding rod 55 fixedly connected thereto are driven to swing. By the swing of the guiding rod 55, the direction of the output air flow can be adjusted, thereby improving the cleaning effect on the dead corners on both sides of the turbulent fin 12 and further improving the heat dissipation effect of the turbulent fin 12.

[0055] Since the reciprocating movement frequency of the inner shaft rod 45 is very fast, and if the guiding rod 55 swings at a relatively fast frequency, it may lead to insufficient cleaning time for the dead corners. Therefore, the second spring 56 is a spring with a small stiffness. This spring has a small stiffness and requires a long time to release enough energy to drive the reset, which can slow down the reset time of the adjustment rod 52, thereby ensuring the cleaning effect on the dead corners.

[0056] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0057] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A straight-through tube belt type aluminum alloy heat exchanger for a transformer, comprising a heat exchanger body (1), wherein the heat exchanger body (1) comprises an oil-passing vertical plate (11), turbulent fins (12), a top oil chamber (13) and an oil channel (14), characterized in that: A cleaning device (2) is installed on one side of the oil-passing vertical plate (11), and the cleaning device (2) comprises a cleaning block (21), a conical spray block (22) for cleaning dust on the surface of the turbulent fin (12) is installed in the cleaning block (21), and a pneumatic device (3) is arranged in the cleaning block (21); The pneumatic device (3) is used to supply air into the conical spray block (22).

2. The straight-through tube-belt type aluminum alloy heat exchanger for transformer according to claim 1, characterized in that: The cleaning device (2) comprises a sliding track (210) mounted on one side of the oil-passing vertical plate (11), an active slider (211) being slidably connected in the sliding track (210), the active slider (211) sliding in the sliding track (210) being driven by a motor screw transmission system (212), the other end of the active slider (211) being fixedly connected to the cleaning block (21), the cleaning block (21) having a mounting groove (23) formed therein, the conical spray block (22) being mounted in the mounting groove (23), and the conical spray block (22) having a narrow groove (25) formed therein.

3. The straight-through tube-belt type aluminum alloy heat exchanger for transformer according to claim 2, characterized in that: The cleaning block (21) is provided with a piston chamber (26), a piston plate (27) is slidably connected to the piston chamber (26), a one-way air inlet (28) is connected to the bottom of the piston chamber (26), one end of the piston chamber (26) is connected to a one-way air outlet (29), one end of the one-way air outlet (29) is connected to a connecting hose (24), and the other end of the connecting hose (24) is connected to the narrow groove (25), and the piston chamber (26), the piston plate (27), the one-way air inlet (28), the one-way air outlet (29) and the connecting hose (24) are provided in two groups.

4. The straight-through tube-belt type aluminum alloy heat exchanger for transformer according to claim 3, characterized in that: The pneumatic device (3) includes an installation drive groove (35) and a pull rod slide groove (32) provided in the cleaning block (21), a piston pull rod (31) being slidably connected in the pull rod slide groove (32), one end of the piston pull rod (31) being rotatably connected to the bottom of the piston plate (27), and the other end of the piston pull rod (31) being rotatably connected in a swing rod (33), the swing rod (33) being fixedly connected to the side wall of a fixed shaft (34), and the fixed shaft (34) being rotatably connected in the installation drive groove (35).

5. The straight-through tube-belt type aluminum alloy heat exchanger for transformer according to claim 4, characterized in that: One end of the swing rod (33) is rotatably connected to a swing telescopic rod (38), and the other end of the swing telescopic rod (38) is rotatably connected to an eccentric shaft (37). The eccentric shaft (37) is fixedly connected to one side of a fixed disk (36), and the fixed disk (36) is rotatably connected in the mounting drive groove (35). One side of the swing telescopic rod (38) is fixedly connected to a vertical slider (310), and the other end of the vertical slider (310) is slidably connected in a vertical groove (39). The vertical groove (39) is provided in the cleaning block (21).

6. The straight-through tube-belt type aluminum alloy heat exchanger for transformer according to claim 5, characterized in that: The fixed disc (36) is connected to a pulley (312) via a belt (311), a gear shaft (313) is fixedly connected to the bottom of the pulley (312), the gear shaft (313) is meshedly connected to a first tooth groove (314), the first tooth groove (314) is provided on one side of the sliding track (210), a side wall of the gear shaft (313) is rotatably connected to a mounting rod (315), and the mounting rod (315) is fixedly connected to one side of the active slider (211).

7. The straight-through tube-belt type aluminum alloy heat exchanger for transformer according to claim 4, characterized in that: The cleaning block (21) is provided with a swinging jet device (4), the swinging jet device (4) comprising a swinging groove (41) provided in the cleaning block (21), a swinging shaft (42) being rotatably connected in the swinging groove (41), one side of the swinging shaft (42) being fixedly connected to the side wall of the conical jet block (22), an inner shaft groove (43) and an inner shaft track groove (44) being provided in the swinging shaft (42), an inner shaft rod (45) being inserted in the inner shaft groove (43), a track slider (46) being fixedly connected to the side wall of the inner shaft rod (45), and the track slider (46) being slidably connected in the inner shaft track groove (44).

8. The straight-through tube-belt type aluminum alloy heat exchanger for transformer according to claim 7, characterized in that: One end of the inner shaft rod (45) is fixedly connected to a swing drive rod (48), the swing drive rod (48) is slidably connected in a swing drive groove (47), the swing drive groove (47) is provided in the cleaning block (21), one side of the swing drive rod (48) is connected to the swing drive groove (47) via a swing spring (49), one end of the swing drive rod (48) is fixedly connected to a drive block (410), and the drive block (410) is driven by the swinging contact of the swing rod (33).

9. The straight-through tube-belt type aluminum alloy heat exchanger for transformer according to claim 8, characterized in that: A guide adjustment device (5) is provided in the conical spray block (22), and the guide adjustment device (5) comprises an adjustment slot (51) provided in the conical spray block (22), an adjustment rod (52) is slidably connected in the adjustment slot (51), a driving rack (53) is fixedly connected to one side of the adjustment rod (52), the driving rack (53) is meshingly connected to a rotating gear shaft (54), a guide rod (55) is fixedly connected to the top of the rotating gear shaft (54), the guide rod (55) is provided in the narrow slot (25), the adjustment rod (52) is resisted by the inner shaft rod (45), and the adjustment rod (52) and the adjustment slot (51) are connected via a No. 2 spring (56).

10. The straight-through tube-belt type aluminum alloy heat exchanger for transformer according to claim 1, characterized in that: A turbulent fin (12) is installed between two adjacent oil-passing vertical plates (11), top oil chambers (13) are installed at both ends of the oil-passing vertical plates (11), and an oil channel (14) is installed at the top of the top oil chamber (13).

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