Pipe-type transformer heat sink

Abstract

The application relates to the technical field of transformers, and particularly discloses a tube piece type transformer heat dissipation device, which comprises an input assembly used for receiving insulation oil discharged from a transformer; a heat dissipation assembly, the heat dissipation assembly comprises a plurality of heat dissipation units arranged side by side and internally formed with cavities for the insulation oil to flow through, and the input assembly distributes the insulation oil into the cavities of the heat dissipation units; a backflow assembly used for collecting the insulation oil cooled by the heat dissipation units and guiding the insulation oil to backflow to the transformer; a first disturbance assembly movably arranged outside the heat dissipation units and used for applying disturbance to fluid outside the heat dissipation units; a second disturbance assembly arranged inside the cavities and used for applying disturbance to the insulation oil flow in the cavities; and a transmission assembly connected between the first disturbance assembly and the second disturbance assembly and used for transmitting the movement of the second disturbance assembly to the first disturbance assembly so as to drive the first disturbance assembly to move, thereby improving the heat exchange efficiency.

Description

Technical Field

[0001] This invention relates to the field of transformer technology, and more specifically to a heat dissipation device for a tube-type transformer. Background Technology

[0002] Transformers are core equipment in power transmission and distribution systems. Under high-load operating conditions, their internal core and coils generate continuous heat, leading to increased heat generation. If this heat cannot be dissipated effectively and promptly, it can cause problems such as decreased transformer insulation performance and accelerated component aging. This not only seriously threatens the continuity of power supply but may also cause major safety accidents such as fires due to overheating. Transformers are classified into dry-type transformers and oil-immersed transformers. Oil-immersed transformers rely on insulating oil for heat conduction and dissipation to maintain their normal operating temperature and ensure safe and stable operation.

[0003] In related technologies, Chinese patent application CN122224654A discloses a lightweight, high-strength transformer heat dissipation mechanism, including an output pipe and heat sinks; it also includes a fixing component and an aluminum component; the fixing component includes an upper fixing flange, a lower fixing flange, a distribution plate, and a manifold plate; the aluminum component includes an upper aluminum flange, a lower aluminum flange, and heat sinks; the distribution plate is connected between the upper fixing flange and the output pipe, and the manifold plate is connected between the lower fixing flange and the output pipe. By detachably connecting the aluminum heat dissipation component and the steel fixing component, the radiator is lightweight and modularly designed for cleaning and maintenance; at the same time, by adding V-shaped guide vanes in the heat dissipation gap, the rising hot airflow is diverted to both sides, improving the airflow organization within the gap.

[0004] However, in the aforementioned technologies, the airflow driving force in the natural convection mode is only provided by the buoyancy force formed by the density difference between hot and cold air, resulting in a low overall flow velocity. Consequently, the natural convection heat transfer coefficient on the air side is already at a low level. The fixed V-shaped guide vanes can only achieve passive flow diversion and cannot disturb or scour the heat sink wall, nor can they actively break the continuous thermal boundary layer that gradually forms on the heat sink surface. As the airflow flows from bottom to top along the heat dissipation gap, the thermal boundary layer on the wall continues to thicken, and the heat transfer resistance between the air and the wall continuously increases. The boundary layer thickness is greater closer to the upper part of the heat sink, and the local heat transfer coefficient further decreases, leading to a reduction in the heat transfer efficiency of the heat sink. Summary of the Invention

[0005] This invention provides a heat dissipation device for a tube-type transformer, which aims to solve the technical problem of reduced heat exchange efficiency in the prior art.

[0006] The present invention relates to a heat dissipation device for a tube-type transformer, wherein the transformer has an oil outlet and an oil return port, including...

[0007] The input component is connected to the oil outlet of the transformer and is used to receive the insulating oil discharged from the transformer. A heat dissipation assembly includes multiple heat dissipation units arranged in parallel and having cavities formed inside for insulating oil to flow through, and an input component distributes the insulating oil into the cavities of each heat dissipation unit; The return flow assembly is connected to the transformer's oil return port and is used to collect the insulating oil cooled by the heat dissipation unit and guide it back to the transformer. The first disturbance component is movably disposed outside the heat dissipation unit and is used to apply disturbance to the fluid outside the heat dissipation unit in order to break the air-side thermal boundary layer. The second disturbance component is disposed inside the cavity and is used to disturb the flow of insulating oil inside the cavity; A transmission component, connecting the first disturbance component and the second disturbance component, is used to transmit the motion of the second disturbance component to the first disturbance component to drive the first disturbance component to move.

[0008] Its effect lies in the fact that, by setting up an input component, a heat dissipation component, and a return component, the input component evenly distributes the high-temperature insulating oil to each heat dissipation unit. The heat dissipation unit can cool the insulating oil located in the cavity. After being cooled by the heat dissipation unit, the oil flows back to the transformer by the return component, forming a complete oil circuit circulation. During this process, the first disturbance component is movably set outside the heat dissipation unit, which can actively disturb the airflow outside the heat dissipation unit, break the gradually thickening thermal boundary layer on the air side, and reduce the heat transfer resistance. At the same time, the second disturbance component is set inside the cavity, which can disturb the insulating oil, break the thermal boundary layer on the oil side, and improve the heat transfer efficiency of the oil to the wall, thereby improving the heat dissipation efficiency. The transmission component transmits the motion of the second disturbance component to the first disturbance component, realizing the use of the energy of the insulating oil flow to drive the movement of the external disturbance component without the need for an additional power source, thus improving the heat dissipation efficiency while reducing energy consumption.

[0009] Preferably, the second disturbance component includes A flow-disrupting element is rotatably disposed within the cavity, and the flow-disrupting element rotates under the action of insulating oil flushing.

[0010] Its effect is that, through the rotatable turbulence component inside the cavity, the rotation is driven by the kinetic energy of the insulating oil itself. Without the need for an external independent power source, it can actively break the static laminar flow state of the insulating oil in the heat dissipation unit. By forcibly disrupting the oil stratification state through dynamic turbulence, the heat exchange efficiency between the oil and the heat dissipation unit wall is greatly improved, thereby optimizing the heat dissipation effect.

[0011] Preferably, the flow deflector includes at least one spiral deflector strip arranged along the height direction of the heat dissipation unit. When the spiral deflector strip rotates, it guides the insulating oil to flow along the spiral channel, so that the insulating oil forms a flow state in which circumferential swirling flow is coupled with axial mainstream flow.

[0012] Its effect lies in the fact that by using a spiral turbulence bar set along the height of the heat dissipation unit, the insulating oil flows under the guidance of the spiral channel, forming a double-layer flow state that couples the circumferential swirling flow with the axial mainstream. This structure forces the oil to move radially, so that the outer peripheral oil adheres tightly to the wall to form a swirling scouring, effectively thinning the oil-side thermal boundary layer, while avoiding the formation of a high-temperature oil flow dead zone in the central area, thus improving the overall heat exchange uniformity.

[0013] Preferably, the second disturbance component further includes The transmission component includes an impeller disposed at the inlet of the cavity, the impeller being coaxially connected to the spiral baffle strip, the impeller rotating under the impact of insulating oil and driving the spiral baffle strip to rotate.

[0014] Its effect is that by setting an impeller at the cavity inlet and coaxially connecting the impeller with the spiral baffle, the high-temperature insulating oil impacts the impeller when entering the cavity, converting the fluid kinetic energy into rotational mechanical energy, which drives the spiral baffle to rotate synchronously. This setting makes full use of the insulating oil's own flow energy to achieve baffle drive, without the need for an independent motor or external power source. At the same time, the impeller is set at the cavity inlet, which can alleviate the oil impact pressure and achieve dynamic baffle in conjunction with the spiral baffle.

[0015] Preferably, the outer wall of the heat dissipation unit is divided into at least two disturbance segments along its height direction. The first disturbance component includes at least two disturbance elements, each of which corresponds to one of the disturbance segments. Each disturbance element includes a plurality of heat dissipation fins spaced apart along the height direction of the heat dissipation unit. The heat dissipation fins are inclined downward between two adjacent heat dissipation units. The higher side of each heat dissipation fin is rotatably connected to one of the heat dissipation units, and the plurality of heat dissipation fins rotate synchronously. The transmission assembly is provided in at least two, and the transmission assembly corresponds one-to-one with the disturbance section. The transmission assembly includes a reversing member. One end of the reversing member passes through the heat dissipation unit and is connected to the spiral baffle strip, and the other end is connected to one of the heat dissipation fins in the corresponding disturbance section.

[0016] Its effect is that it divides the heat sink unit into at least two disturbance sections along its height direction, with each disturbance section equipped with independent disturbance components and transmission components, enabling the external heat sink fins to achieve differentiated disturbances for different height areas; by tilting the heat sink fins and hinged them to the linkage rod, it realizes the linkage swing of multiple heat sink fins in the same disturbance section, which can form dynamic airflow disturbances in the heat dissipation gap, actively scouring the heat sink wall and breaking the air-side thermal boundary layer; by using the reversing component to transmit the movement of the spiral disturbance strip to the heat sink fins of each disturbance section, it realizes the synchronous linkage between internal disturbances and external disturbances.

[0017] Preferably, the reversing component includes two bevel gears and a drive rod. Both bevel gears are located in the cavity. One bevel gear is coaxially fixed to the spiral baffle. The drive rod is arranged in a direction perpendicular to the side wall of the heat sink unit. One end of the drive rod passes through the side wall of the heat sink unit and is coaxially fixed to the other bevel gear. The two bevel gears mesh with each other. The transmission assembly also includes a slider, and the other end of the drive rod is connected to the heat dissipation fins through the slider.

[0018] Its effect is that, through the double bevel gear reversing structure, the rotational power of the spiral turbulence strip inside the heat sink unit is stably transmitted to the external active disk, realizing the mechanical linkage between the internal oil turbulence and the external fin oscillation.

[0019] Preferably, the sliding member includes an active disk, a connecting rod, and a hinge seat. The other end of the active rod is coaxially fixed to the active disk. One end of the connecting rod is hinged to the active disk, and the other end is hinged to the hinge seat. The hinge seat is slidably connected to one of the heat dissipation fins in the corresponding disturbance section, and the hinge seat slides along the inclination direction of the heat dissipation fin.

[0020] Its effect is that the drive disc, connecting rod and hinge seat form a crank-connecting rod mechanism, which transforms continuous rotation into the reciprocating oscillation of heat dissipation fins, continuously disturbing the external airflow, breaking the air-side thermal boundary layer and improving heat dissipation efficiency.

[0021] Preferably, along the height direction of the heat dissipation unit, the rotation radius of the connecting rod corresponding to the disturbance segment on the corresponding active disk decreases sequentially.

[0022] The effect is that the rotation radius of the connecting rods corresponding to each disturbance segment on the active disk decreases sequentially, causing the heat dissipation fins near the top area to swing dramatically, implementing high-intensity disturbance to break the thickened boundary layer; while the heat dissipation fins near the bottom area swing at a low amplitude, avoiding excessive disturbance that would cause unnecessary energy consumption.

[0023] Preferably, the heat dissipation unit has at least one protrusion connected below each of the heat dissipation fins, and the heat dissipation fins can collide with the protrusions during rotation.

[0024] Its effect is that the heat sink fins periodically collide with the protrusions during the swinging process, generating mechanical vibration. This vibration can shake off the dust attached to the surface of the heat sink fins, realizing online self-cleaning of the heat sink fins. This avoids the problem of long-term dust adhesion leading to increased heat dissipation resistance and decreased heat dissipation efficiency, and reduces the frequency of manual maintenance.

[0025] Preferably, a spring scraper is provided on the outer side of the spiral baffle, and the outer edge of the spring scraper contacts the inner wall of the heat dissipation unit.

[0026] Its effect is that the spring scraper set on the outside of the spiral baffle rotates synchronously with the spiral baffle. The outer edge of the spring scraper fits the contour of the heat sink unit cavity and continuously scrapes the inner wall during rotation, simultaneously removing the oil stains attached to the inner wall, thus achieving self-cleaning of the internal oil stains. This setting, together with the dust removal function of the external heat sink fins, forms a two-way cleaning function, ensuring the heat exchange efficiency of the heat sink unit from both the inside and outside.

[0027] The beneficial effects of this invention are as follows: through the synergistic effect of active disturbances on both the inner and outer sides, the inner side uses spiral turbulence strips to force the oil to form a swirling flow coupled with axial flow to break the thermal boundary layer on the oil side, while the outer side uses a transmission component to transfer the kinetic energy of the oil flow to the heat dissipation fins so that they continuously oscillate to break the thermal boundary layer on the air side, which significantly improves the overall heat exchange efficiency; at the same time, the power to drive the spiral turbulence strips comes entirely from the kinetic energy of the insulating oil itself, without the need for an additional power source, which is energy-saving and has a compact structure; a graded differentiated disturbance strategy is adopted along the height direction of the heat dissipation unit, and the disturbance intensity is matched for areas with different thermal boundary layer thicknesses to achieve efficient energy utilization. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0029] Figure 2 This is a partial cross-sectional view of the buffer component in this invention.

[0030] Figure 3 This is a schematic diagram of the buffer plate in this invention.

[0031] Figure 4 This is a cross-sectional view of the reflux plate in this invention.

[0032] Figure 5 This is a schematic diagram of the structure of the first disturbance component and the transmission component in this invention.

[0033] Figure 6 This is a cross-sectional view of the second disturbance component in this invention.

[0034] Figure 7 yes Figure 6 A magnified view of A in the middle.

[0035] Figure label: 1. Input component; 11. Output pipe; 111. Filter cartridge; 12. Buffer component; 121. Buffer plate; 121a. Buffer groove; 121b. Receiving groove; 121c. Divider rod; 121d. Sealing ring groove; 121f. Rubber sealing gasket; 121g. Guide hole; 122. Sealing plate; 2. Heat dissipation component; 21. Heat dissipation unit; 211. Cavity; 212. Disturbance section; 213. Protrusion; 22. Connecting plate; 3. Return component; 31. Return plate; 32. Filter screen; 33. Input pipe; 4. First disturbance component; 41. Disturbance component; 411. Heat dissipation fins; 412. Linkage rod; 42. Drive component; 421. Drive frame; 422. Drive fan; 423. Induction source; 5. Second disturbance assembly; 51. Connecting frame; 52. Baffle component; 521. Spiral baffle strip; 521a. Spring scraper; 53. Transmission component; 531. Synchronous pulley; 532. Synchronous belt; 533. Impeller; 6. Transmission assembly; 61. Reversing component; 611. Bevel gear; 612. Drive rod; 62. Sliding component; 621. Drive disc; 622. Connecting rod; 623. Hinge seat; 624. Sliding shaft. Detailed Implementation

[0036] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0037] Reference Figure 1 , Figure 2 and Figure 3 The heat dissipation device for the tube-type transformer of the present invention includes an input component 1, a heat dissipation component 2, a return current component 3 and a first disturbance component 4. The input component 1 and the return current component 3 are both connected to the transformer, and the top of the heat dissipation component 2 is connected to the input component 1 and the bottom is connected to the return current component 3. The first disturbance component 4 is connected to the heat dissipation component 2.

[0038] Reference Figure 1 , Figure 2 and Figure 3The input component 1 includes an output pipe 11 and a buffer component 12. One end of the output pipe 11 is connected to the oil outlet at the top of the transformer. The buffer component 12 includes a buffer plate 121 and a sealing plate 122. A buffer groove 121a is provided on the top of the buffer plate 121. The buffer groove 121a is arranged along one side of the buffer plate 121. A receiving groove 121b is provided on the top of the buffer plate 121, and the receiving groove 121b is connected to the buffer groove 121a to form a confluence groove. Multiple dividing rods 121c are provided in the receiving groove 121b of the buffer plate 121. The multiple dividing rods 121c are evenly distributed along the setting direction of the buffer groove 121a. A flow gap with the same spacing is left between two adjacent dividing rods 121c for the flow of insulating oil. The buffer groove 121a is connected to each flow gap. The hot insulating oil in the transformer enters the buffer groove 121a through the output pipe 11. Then, the insulating oil flows evenly through the buffer groove 121a to each flow gap.

[0039] Reference Figure 1 , Figure 2 and Figure 3 The sealing plate 122 is located on top of the buffer plate 121. The sealing plate 122 seals the opening of the manifold, and the bottom of the sealing plate 122 abuts against the top of the separator rod 121c. The top of the buffer plate 121 has a sealing ring groove 121d, which surrounds the outside of the manifold. A rubber sealing gasket 121f is provided in the sealing ring groove 121d of the buffer plate 121. When the sealing plate 122 covers the opening of the manifold, the sealing plate 122 and the buffer plate 121 are sealed by the rubber sealing gasket 121f. The sealing plate 122 and the buffer plate 121 are fixedly connected by screws. The end of the output pipe 11 away from the transformer passes through the middle of the top of the sealing plate 122 near the buffer groove 121a. The output pipe 11 is connected to the buffer groove 121a. The output pipe 11 and the sealing plate 122 are detachably sealed.

[0040] It should be noted that, referring to Figure 2 The output pipe 11 is connected to a filter cylinder 111 at the end away from the transformer. The filter cylinder 111 is connected to the output pipe 11 by welding. There is a gap between the bottom of the filter cylinder 111 and the bottom of the buffer tank 121a. By setting the filter cylinder 111, on the one hand, the insulating oil can be filtered; on the other hand, the insulating oil is prevented from shooting vertically into the bottom of the buffer tank 121a, which would cause a high-voltage stagnant area to form at the bottom of the tank.

[0041] It is important to note that the flow resistance and flow rate are consistent in each flow gap, allowing the insulating oil to flow from the buffer tank 121a into the flow gap. The separator rod 121c has a raised sealing rib integrally provided on the side away from the buffer plate 121. After the sealing plate 122 is pressed down, the raised sealing rib makes line contact with the bottom surface of the sealing plate 122 to seal, blocking the transverse oil flow between the flow gaps. Each flow gap is independent and does not allow oil to flow between them. Through the cooperation of the buffer tank 121a and the receiving tank 121b, and the uniform division of the oil flow by the separator rod 121c, the impact force when the insulating oil enters the heat dissipation system is effectively reduced.

[0042] Reference Figure 2 and Figure 3 The buffer plate 121 has multiple guide holes 121g in each flow gap, and the multiple guide holes 121g in each flow gap are spaced apart along the length direction of the separator rod 121c.

[0043] Reference Figure 1 and Figure 3 The heat dissipation assembly 2 includes multiple heat dissipation units 21 and a connecting plate 22. In this embodiment, the heat dissipation unit 21 is a heat sink. The multiple heat dissipation units 21 are distributed along the distribution direction of multiple partition rods 121c. The heat dissipation units 21 correspond one-to-one with the partition rods 121c, and the heat dissipation units 21 are arranged in a direction perpendicular to the buffer plate 121. The heat dissipation unit 21 is provided with a cavity 211 through which insulating oil flows. The guide hole 121g communicates with the cavity 211 after passing through the top of the heat dissipation unit 21. The insulating oil located in the confluence groove flows into the corresponding heat dissipation unit 21 through the guide hole 121g for heat dissipation. The multiple heat dissipation units 21 form a heat sink.

[0044] Reference Figure 1 The connecting plate 22 is located at the bottom of the heat sink unit 21, and the connecting plate 22 is arranged parallel to the buffer plate 121. The heat sink unit 21 passes through the connecting plate 22 and is fixedly connected to the connecting plate 22. Welding or other fixed connection methods can be used. The specific connection method can be determined according to the actual situation.

[0045] Reference Figure 1 and Figure 4The reflux assembly 3 includes a reflux plate 31, a filter screen 32, and an input pipe 33. The reflux plate 31 is located at the bottom of the connecting plate 22. In this embodiment, the reflux plate 31 is conical. The larger end of the reflux plate 31 is detachably connected to the connecting plate 22 by screws. The connecting plate 22 and the reflux plate 31 form a reflux cavity. The filter screen 32 is located in the reflux cavity and is arranged parallel to the connecting plate 22. The filter screen 32 is fixedly connected to the reflux plate 31 by screws. The projection of the filter screen 32 on the connecting plate 22 in a direction perpendicular to the connecting plate 22 covers the projection of multiple heat sink units 21 on the connecting plate 22 in a direction perpendicular to the connecting plate 22, so that the filter screen 32 can filter the insulating oil flowing out of the heat sink units 21, filter out the solid impurities mixed in the insulating oil, and prevent the impurities from entering the transformer and affecting the insulation performance. One end of the input pipe 33 is connected to the smaller end of the reflux plate 31, and the other end is connected to the oil return port at the bottom of the transformer, so that the cooled insulating oil can enter the transformer and continue to work.

[0046] Reference Figure 1 and Figure 5 The outer wall of the heat sink 21 is divided into multiple independent disturbance segments 212 along the height direction of the heat sink 21. Preferably, in this embodiment, the heat sink 21 is divided into two disturbance segments 212 sequentially downwards along the height direction. The two disturbance segments 212 are designated as the first disturbance segment and the second disturbance segment. Of course, the number of disturbance segments 212 is not limited to two. In practical applications, N disturbance segments 212 can be set according to the height dimension inside the heat sink 21, where N≥2. The height spacing of each disturbance segment 212 can be equal or unequal. Preferably, the height of the disturbance segment 212 can be set larger in the lower region near the connecting plate 22 because the thermal boundary layer is relatively thin; the height of the segment can be set smaller in the upper region near the buffer plate 121 because the thermal boundary layer is thicker and the temperature gradient changes drastically, so as to achieve more precise disturbance control.

[0047] Reference Figure 1 and Figure 5The first disturbance component 4 includes multiple disturbance elements 41 and one driving element 42. In this embodiment, there are two disturbance elements 41, and each disturbance element 41 corresponds to a disturbance segment 212. Each disturbance element 41 includes multiple heat dissipation fins 411 and a linkage rod 412. The longer side of the heat dissipation fin 411 is arranged along the length direction of the separator rod 121c, and the shorter side is inclined downward from the buffer plate 121 to the connecting plate 22. The higher side of the heat dissipation fin 411 is rotatably connected to the outer wall of one of the heat dissipation units 21 by a torsion spring. The torsion spring is prior art and is not shown in the figure. Multiple heat dissipation fins 411 are spaced apart along a direction perpendicular to the connecting plate 22, and a heat dissipation gap is left between two adjacent heat dissipation fins 411; the heat dissipation unit 21 has at least one protrusion 213 below each heat dissipation fin 411, the protrusion 213 is welded to the heat dissipation unit 21, and the heat dissipation fin 411 can collide with the protrusion 213 during the rotation of the heat dissipation fin 411; multiple heat dissipation fins 411 located in the same disturbance section 212 are connected by a linkage rod 412, and the setting direction of the linkage rod 412 is parallel to the heat dissipation unit 21, and the linkage rod 412 is hinged to each heat dissipation fin 411.

[0048] It should be noted that when the heat dissipation fins 411 are subjected to force and rotate, the torsion spring is torsionally deformed, and the torsion spring elastically resets, causing the heat dissipation fins 411 to rotate in the opposite direction. This process is repeated, and multiple heat dissipation fins 411 continuously oscillate. On the one hand, this can continuously disturb the airflow in the heat dissipation gap, break the gradually thickening thermal boundary layer on the outer wall of the heat dissipation unit 21, reduce the heat transfer thermal resistance, and improve the heat dissipation efficiency. On the other hand, the collision between the heat dissipation fins 411 and the protrusions 213 can perform a dust cleaning operation on the heat dissipation fins 411, preventing the heat dissipation effect of the heat dissipation unit 21 from being affected by dust adhesion.

[0049] Reference Figure 1 The drive unit 42 includes a drive frame 421, a drive fan 422, and a sensor 423. The drive frame 421 is arranged perpendicular to the connecting plate 22. The top and bottom of the drive frame 421 are fixedly connected to the buffer plate 121 and the connecting plate 22, respectively. The fixed connection can be achieved by welding or screw fixing. The drive fan 422 is fixedly connected to the drive frame 421 near the heat sink by screws. The sensor 423 is embedded in the buffer plate 121. The sensor 423 can detect fluctuations in the oil inlet pressure of the heat sink unit 21. The sensor 423 is electrically connected to the drive fan 422. When the sensor 423 detects a large oil inlet pressure, it transmits a signal to the drive fan 422, and the drive fan 422 automatically increases the disturbance frequency. When the sensor 423 detects a small oil inlet pressure, the drive fan 422 reduces the disturbance frequency to reduce power consumption. When the sensor 423 detects zero oil inlet pressure, the drive fan 422 stops working.

[0050] It should be noted that the sensing source 423 can be a hydraulic pressure sensing plate, a diaphragm differential pressure sensing component, etc.; or the raised sealing rib located at the top of the separator 121c can be replaced with a fluororubber-coated piezoelectric sealing rib, which has the original oil sealing and anti-oil leakage sealing functions as well as oil pressure acquisition function. The oil pressure squeezes the sealing rib to generate piezoelectric charge, and directly outputs an electrical signal to control the drive fan 422. The drive fan 422 blows air into the heat dissipation gap, which can enhance the air convection in the heat dissipation gap and blow off the dust on the heat dissipation fins 411.

[0051] Reference Figure 5 and Figure 6 The heat dissipation device for the tube-type transformer also includes multiple second disturbance components 5 and multiple transmission components 6, all of which are connected to the heat dissipation component 2.

[0052] Reference Figure 3 and Figure 6 The second disturbance component 5 corresponds one-to-one with the heat sink unit 21. The second disturbance component 5 is located within the cavity 211 of the heat sink unit 21. The second disturbance component 5 includes a connecting frame 51, a flow-deflecting element 52, and a transmission element 53. The connecting frame 51 is fixedly connected to the center of the cavity 211 of the heat sink unit 21. The flow-deflecting element 52 includes at least one spiral flow-deflecting strip 521. In this embodiment, multiple spiral flow-deflecting strips 521 are disposed on the connecting frame 51, with a total of seven spiral flow-deflecting strips 521 arranged along a direction perpendicular to the connecting plate 22. 21 is rotatably connected to the connecting frame 51. A spring scraper 521a is provided on the outer side of the spiral baffle 521. The outer edge of the spring scraper 521a contacts the inner wall of the heat dissipation unit 21. During the rotation process, the inner wall oil stains are scraped off simultaneously, realizing baffle and self-cleaning at the same time. It works in conjunction with the cleaning of the heat dissipation fins 411 on the outer side of the heat dissipation unit 21 to form a bidirectional cleaning coupling between the inside and outside. The insulating oil flows into the cavity 211 through the guide hole 121g. Subsequently, the insulating oil flowing through the cavity 211 flows along the spiral channel of the spiral baffle 521, breaking the laminar flow state of the insulating oil in the heat dissipation unit 21.

[0053] It should be noted that the spiral baffle 521 adopts a variable pitch baffle. The area near the top of the heat sink 21 is the high temperature zone, and the area near the bottom of the heat sink 21 is the low temperature zone. The spiral baffle 521 has a smaller pitch near the high temperature zone, resulting in greater disturbance intensity, thereby enhancing the heat transfer of the high temperature oil. The spiral baffle 521 has a larger pitch near the low temperature zone, resulting in less disturbance intensity and reducing flow resistance.

[0054] Reference Figure 6 and Figure 7The transmission component 53 includes multiple synchronous pulleys 531, a synchronous belt 532, and an impeller 533. The synchronous pulleys 531 correspond one-to-one with the spiral baffles 521, and the synchronous pulleys 531 are coaxially fixed to the spiral baffles 521. The synchronous belt 532 is wound around the synchronous pulleys 531. The impeller 533 corresponds to one of the guide holes 121g, and the impeller 533 is coaxially fixed to one of the spiral baffles 521.

[0055] It should be noted that the timing pulley 531, timing belt 532, and impeller 533 need to be made of high-temperature resistant materials. For example, the timing pulley 531 and impeller 533 can be made of 304 / 316 stainless steel, and the timing belt 532 can be made of fluororubber timing belt.

[0056] It should be noted that when the insulating oil enters the heat dissipation unit 21, the insulating oil falls onto the impeller 533, which can drive the impeller 533 to rotate. During this process, the spiral turbulence strip 521, which is coaxially fixed with the impeller 533, rotates. Through the cooperation of the synchronous pulley 531 and the synchronous belt 532 on the adjacent spiral turbulence strip 521, the other spiral turbulence strips 521 are driven to rotate, which can turbulentize the insulating oil.

[0057] The insulating oil enters the heat dissipation unit 21 and is forcibly cut and constrained by the spiral turbulence bar 521. The high-temperature insulating oil is radially split by the spiral turbulence bar 521, and the oil is divided into a double-layer coupled flow state of outer peripheral wall-adhering swirling flow and central axial mainstream. A small amount of oil on the outer periphery adheres closely to the turbulence surface of the spiral turbulence bar 521 and spirally sweeps across the tube wall, breaking the heat exchange thermal resistance of the oil on the tube wall. This overcomes the high viscosity and poor fluidity of transformer insulating oil, and can prevent the formation of a central high-temperature oil flow dead zone in the heat dissipation unit 21. This further improves the heat transfer efficiency of the insulating oil to the wall of the heat dissipation unit 21, thereby improving the heat dissipation effect.

[0058] Reference Figure 5 and Figure 7The transmission assembly 6 corresponds one-to-one with the disturbance section 212. The transmission assembly 6 includes a reversing component 61 and a sliding component 62. The reversing component 61 includes two bevel gears 611 and a drive rod 612. Both bevel gears 611 are located in the cavity 211 of the heat sink unit 21. One of the bevel gears 611 is coaxially welded to the spiral baffle 521. The drive rod 612 is arranged perpendicular to the side wall of the heat sink unit 21. One end of the drive rod 612 passes through the side wall of the heat sink unit 21 and is coaxially fixed with the bevel gear 611. The two bevel gears 611 mesh with each other. The connection between the drive rod 612 and the heat sink unit 21 is sealed with a sealed bearing to prevent leakage of insulating oil. The sliding component 62 includes a drive disc 621, a connecting rod 622, a hinge seat 623, and a sliding shaft 624. The other end of the drive rod 612 is coaxially fixed with the drive disc 621. One end of the connecting rod 622 is hinged to the drive disc 621, and the other end is hinged to the hinge seat 623. The hinge seat 623 is close to one of the heat dissipation fins 411. In this embodiment, the hinge seat 623 is close to the heat dissipation fin 411 at the bottom of the corresponding disturbance section 212, and the heat dissipation fin 411 close to which the hinge seat 623 is located has a sliding hole. The sliding shaft 624 is located in the sliding hole. The setting direction of the sliding shaft 624 is parallel to the length direction of the longer side of the heat dissipation fin 411. The sliding shaft 624 is slidably connected to the heat dissipation fin 411. The length of the sliding shaft 624 is greater than or equal to the diameter of the drive disk 621. The heat dissipation fin 411 has slots on both sides opposite to the sliding hole for the two ends of the sliding shaft 624 to be inserted. The sliding shaft 624 slides along the inclined direction of the heat dissipation fin 411. The hinge seat 623 is sleeved on the sliding shaft 624, and the hinge seat 623 can slide on the sliding shaft 624 along the length direction of the sliding shaft 624 to convert the rotational motion of the drive disk 621 into the reciprocating motion of the oscillating heat dissipation fin 411.

[0059] It should be noted that when the spiral spoiler 521 drives the drive disc 621 to rotate through the two bevel gears 611, the connecting rod 622 rotates with the drive disc 621. During this process, the hinge seat 623 rotates with the connecting rod 622. When the connecting rod 622 rotates to the highest point on its rotation path, the sliding shaft 624 slides towards the side closer to the heat dissipation fin 411, which can push the heat dissipation fin 411 to rotate towards the top of the heat dissipation fin 411. When the connecting rod 622 rotates to the lowest point on its rotation path, the sliding shaft 624 slides away from the heat dissipation fin 411, which can pull the heat dissipation fin 411 to rotate towards the bottom of the heat dissipation fin 411, thus realizing the swing of the heat dissipation fin 411.

[0060] It should be noted that in the first disturbance segment and the second disturbance segment, the rotation radius of the connecting rod 622 on the driving disk 621 decreases sequentially.

[0061] For the first disturbance section: When the insulating oil flows through the guide hole 121g into the heat dissipation unit 21 cavity 211, the insulating oil falls on the impeller 533, driving the impeller 533 to rotate, which can drive the spiral turbulence strip 521 to rotate. The spiral turbulence strip 521 drives the active disk 621 located in the first disturbance section to rotate. At this time, the connecting rod 622 rotates synchronously with the active disk 621, causing the heat dissipation fins 411 to be in a large swing state, thereby implementing high-intensity disturbance of the airflow in this area, breaking the gradually thickening thermal boundary layer, and reducing the heat transfer thermal resistance.

[0062] For the second disturbance section: when the spiral turbulence bar 521 drives the active disk 621 located in the second disturbance section to rotate, it drives the heat dissipation fins 411 to swing at a low amplitude.

[0063] The implementation principle of the heat dissipation device for the tube-type transformer of the present invention is as follows: the high-temperature insulating oil in the transformer enters the input component 1 through the output pipe 11 under the action of its own thermosiphon or pumping power. The insulating oil first flows through the filter cartridge 111, and completes the preliminary filtration while avoiding direct flow to the bottom of the tank and forming a stagnant area. Then, the oil flows into the buffer tank 121a of the buffer plate 121, and is evenly divided by multiple partition rods 121c in the receiving tank 121b to form multiple flow gaps with consistent flow resistance. The physical isolation between each gap is achieved by the raised sealing ribs at the top of the partition rods 121c, which prevents lateral oil leakage and ensures that the oil is evenly distributed to each guide hole 121g, and then smoothly injected into the corresponding cavity 211.

[0064] The high-temperature insulating oil entering the cavity 211 of the heat dissipation unit 21 impacts the impeller 533, converting the fluid's kinetic energy into the impeller 533's rotational mechanical energy. The impeller 533 drives the coaxially fixed spiral baffles 521 to rotate, and through the cooperation of the synchronous pulley 531 and the synchronous belt 532, drives all the spiral baffles 521 on the central axis of the cavity 211 of the heat dissipation unit 21 to rotate synchronously. Because the spiral baffles 521 adopt a variable pitch design, the pitch of the high-temperature oil zone near the top of the heat dissipation unit 21 is smaller, resulting in greater disturbance intensity; while the pitch of the low-temperature zone near the bottom is larger, resulting in less disturbance intensity. This variable pitch structure forces the insulating oil to undergo radial differentiation during flow, forming a double-layer coupled flow state of peripheral wall-adhering swirling flow and central axial mainstream. The peripheral swirling flow continuously scours the inner wall of the heat dissipation unit 21, effectively thinning the oil-side thermal boundary layer. At the same time, the spring scraper 521a on the outside of the spiral baffles 521 follows and scrapes the inner wall to prevent oil deposits.

[0065] Meanwhile, the rotational motion of the spiral baffle 521 is transmitted outward through the transmission assembly 6 passing through the side wall of the heat sink 21. The bevel gear 611 located in the cavity 211 of the heat sink 21 reverses the rotational motion of the spiral baffle 521 and transmits it to the drive disc 621 on the outer wall of the heat sink 21 via the drive rod 612. The drive disc 621 drives the connecting rod 622 to rotate. The connecting rod 622 drives the heat sink fins 411 to swing back and forth around the torsion spring axis through the hinge seat 623. Along the height direction of the heat sink 21, the radius of rotation of the connecting rod 622 on the drive disc 621 in each transmission assembly 6 decreases from top to bottom, so that the heat sink fins 411 exhibit large swing in the first disturbance section with the thickest thermal boundary layer and low swing in the second disturbance section. This non-uniform swing mode precisely matches the distribution law of the thermal boundary layer thickness increasing along the height direction of the outer wall of the heat sink 21. In addition, the heat dissipation fins 411 periodically impact the protrusions 213 during the oscillation process, using vibration to achieve self-cleaning and shake off surface dust.

[0066] Furthermore, the sensing source 423 embedded in the buffer plate 121 monitors the fluctuation of the oil inlet pressure in real time, and this pressure value is directly related to the load status of the transformer. When the oil inlet pressure is detected to be rising, the sensing source 423 sends an electrical signal to drive the fan 422 to increase its speed, thereby enhancing air convection in the heat dissipation gap and blowing off dust on the heat dissipation fins 411; conversely, the fan speed is reduced to save energy. Finally, the cooled insulating oil collects in the return cavity and returns to the bottom of the transformer through the input pipe 33.

[0067] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A heat dissipation device for a tube-type transformer, wherein the transformer has an oil outlet and an oil return port, characterized in that, include The input component (1) is connected to the oil outlet of the transformer and is used to receive the insulating oil discharged from the transformer. The heat dissipation assembly (2) includes multiple heat dissipation units (21) arranged in parallel and having cavities (211) for insulating oil to flow through inside. The input assembly (1) distributes the insulating oil into the cavities (211) of each heat dissipation unit (21). The return flow assembly (3) is connected to the return oil port of the transformer and is used to collect the insulating oil cooled by the heat dissipation unit (21) and guide it back to the transformer; The first disturbance component (4) is movably disposed outside the heat dissipation unit (21) for applying disturbance to the fluid outside the heat dissipation unit (21) to break the air-side thermal boundary layer. The second disturbance component (5) is disposed inside the cavity (211) and is used to disturb the insulating oil flow inside the cavity (211); The transmission component (6) connects the first disturbance component (4) and the second disturbance component (5) and is used to transmit the motion of the second disturbance component (5) to the first disturbance component (4) to drive the first disturbance component (4) to move.

2. The heat dissipation device for a tube-type transformer according to claim 1, characterized in that, The second disturbance component (5) includes A turbulence-disrupting element (52) is rotatably disposed within the cavity (211), and the turbulence-disrupting element (52) rotates under the action of insulating oil flushing.

3. The heat dissipation device for a tube-type transformer according to claim 2, characterized in that, The turbulence-disrupting element (52) includes at least one spiral turbulence-disrupting strip (521) arranged along the height direction of the heat dissipation unit (21). When the spiral turbulence-disrupting strip (521) rotates, it guides the insulating oil to flow along the spiral channel, so that the insulating oil forms a flow state in which the circumferential swirling flow is coupled with the axial mainstream flow.

4. The heat dissipation device for a tube-type transformer according to claim 3, characterized in that, The second disturbance component (5) also includes The transmission component (53) includes an impeller (533) disposed at the inlet of the cavity (211). The impeller (533) is coaxially connected with the spiral baffle (521). The impeller (533) rotates under the impact of insulating oil and drives the spiral baffle (521) to rotate.

5. The heat dissipation device for a tube-type transformer according to claim 4, characterized in that, The outer wall of the heat dissipation unit (21) is divided into at least two disturbance segments (212) along its height direction. The first disturbance component (4) includes at least two disturbance elements (41). The disturbance elements (41) correspond one-to-one with the disturbance segments (212). The disturbance elements (41) include a plurality of heat dissipation fins (411) that are spaced apart along the height direction of the heat dissipation unit (21). The heat dissipation fins (411) are inclined downward between two adjacent heat dissipation units (21). The higher side of the heat dissipation fins (411) is rotatably connected to one of the heat dissipation units (21). The plurality of heat dissipation fins (411) rotate synchronously. The transmission assembly (6) is provided in at least two, and the transmission assembly (6) corresponds one-to-one with the disturbance section (212). The transmission assembly (6) includes a reversing member (61). One end of the reversing member (61) passes through the heat dissipation unit (21) and is connected to the spiral baffle (521). The other end is connected to one of the heat dissipation fins (411) in the disturbance section (212) corresponding to it.

6. The heat dissipation device for a tube-type transformer according to claim 5, characterized in that, The reversing component (61) includes two bevel gears (611) and a drive rod (612). Both bevel gears (611) are located inside the cavity (211). One of the bevel gears (611) is coaxially fixed to the spiral baffle (521). The drive rod (612) is arranged in a direction perpendicular to the side wall of the heat dissipation unit (21). One end of the drive rod (612) passes through the side wall of the heat dissipation unit (21) and is coaxially fixed to the other bevel gear (611). The two bevel gears (611) mesh with each other. The transmission assembly (6) also includes a slider (62), and the other end of the drive rod (612) is connected to the heat dissipation fins (411) through the slider (62).

7. The heat dissipation device for a tube-type transformer according to claim 6, characterized in that, The sliding member (62) includes an active disk (621), a connecting rod (622), and a hinge seat (623). The other end of the active rod (612) is coaxially fixed with the active disk (621). One end of the connecting rod (622) is hinged to the active disk (621), and the other end is hinged to the hinge seat (623). The hinge seat (623) is slidably connected to one of the heat dissipation fins (411) in the corresponding disturbance section (212). The hinge seat (623) slides along the inclined direction of the heat dissipation fin (411).

8. The heat dissipation device for a tube-type transformer according to claim 7, characterized in that, Along the height direction of the heat dissipation unit (21), the rotation radius of the connecting rod (622) corresponding to the disturbance section (212) on the corresponding active disk (621) decreases sequentially.

9. The heat dissipation device for a tube-type transformer according to claim 5, characterized in that, The heat dissipation unit (21) has at least one protrusion (213) connected below each heat dissipation fin (411). During the rotation of the heat dissipation fin (411), the heat dissipation fin (411) can collide with the protrusion (213).

10. The heat dissipation device for a tube-type transformer according to claim 9, characterized in that, A spring scraper (521a) is provided on the outer side of the spiral baffle (521), and the outer edge of the spring scraper (521a) contacts the inner wall of the heat dissipation unit (21).

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