A closed transformer air-cooled corrugated cooling device applied to an integrated device

Abstract

The application relates to a closed transformer air-cooled corrugated cooling device applied to an integrated device, which comprises a shell, a frequency converter, a motor, a transformer and an air-cooled mechanism, the shell is provided with a first mounting shell and a second mounting shell and a third mounting shell, the cross section of the second mounting shell is a continuous corrugated structure; the frequency converter is arranged in the first mounting shell, the motor is arranged in the third mounting shell; the air-cooled mechanism is arranged in the second mounting shell, the transformer is arranged in the second mounting shell through a transformer working platform, and the transformer is located above the air-cooled mechanism. The corrugated shell can increase the heat transfer area, the concave-convex design of the corrugated shell can guide the airflow, the convection effect of the airflow is enhanced, and the equipment operation temperature is reduced. Meanwhile, the device integrates multiple components into the same system, land occupation space is saved, the installation and maintenance process is simplified, and when the device is applied on a large scale, the device is easier to be arranged in limited space.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of transformer cooling, in particular to a closed transformer air-cooled corrugated cooling device applied to integrated equipment. BACKGROUND

[0002] In the modern industrial field, integrated equipment has been widely used in many production scenarios due to its high integration, compact footprint, and high efficiency. As a crucial power conversion component in integrated equipment, the transformer plays a vital role in ensuring the stability of the power supply. However, during operation, the transformer inevitably generates heat. If this heat cannot be effectively dissipated in a timely manner, it will seriously affect the performance of the transformer, and thus the running efficiency and reliability of the entire integrated equipment.

[0003] In the past, the heat dissipation of transformers mainly relied on natural cooling methods, which were only suitable for low-power and low-heat devices. In the face of the large amount of heat generated by high-power transformers in integrated equipment, natural cooling has become inadequate. Subsequently, air-cooled cooling technology gradually became the mainstream, which promotes air flow through the rotation of the fan to carry away the heat on the surface of the transformer, significantly improving performance compared to natural cooling. However, traditional air-cooled devices usually adopt a flat shell structure, which has some defects. On the one hand, the flat shell is not conducive to the formation of turbulent flow, resulting in insufficient heat exchange and making it difficult to achieve ideal cooling efficiency. On the other hand, the compact layout of integrated equipment poses strict requirements on the spatial adaptability of the cooling device. The volume and shape of conventional air-cooled devices are difficult to perfectly embed, occupying valuable space and making it difficult to coordinate with other components.

[0004] As integrated equipment develops towards higher precision and higher efficiency, the protection requirements for transformers are also increasing. Once pollutants such as dust, moisture, and corrosive gases from the outside invade the interior of the transformer, they may cause problems such as reduced insulation performance and line corrosion, directly threatening the safety of the equipment. Therefore, closed protection design has become a key to addressing this problem, but the closed structure exacerbates the cooling problem, making it difficult for traditional air-cooled methods to meet the cooling needs in a closed environment.

[0005] In view of the above factors, it is particularly important to develop a closed transformer air-cooled corrugated cooling device applied to integrated equipment. SUMMARY

[0006] OBJECTIVE

[0007] The application aims to provide a closed transformer air-cooled corrugated cooling device applied to integrated equipment, in order to solve the problem of insufficient heat dissipation capacity of the transformer under the condition of limited space of high-integration equipment, and provide a closed air-cooled corrugated cooling device which is efficient, stable and safe, and aims to optimize the design of the cooling system, improve the heat dissipation effect of the transformer, and ensure the continuous, safe, reliable and stable operation of the equipment under the condition of high-power operation.

[0008] In order to achieve the above-mentioned purpose, the application provides the following technical scheme.

[0009] A closed transformer air-cooled corrugated cooling device applied to integrated equipment, comprising a shell, a frequency converter, a motor, a transformer and an air-cooled mechanism, the shell has a first mounting shell, a second mounting shell and a third mounting shell, and the first mounting shell, the second mounting shell and the third mounting shell all have mounting spaces inside, one side of the second mounting shell is fixedly connected with the first mounting shell, the cross section of the second mounting shell is a continuous corrugated structure, and a partition plate is arranged between the second mounting shell and the first mounting shell; the third mounting shell is arranged on the other side of the second mounting shell.

[0010] The frequency converter is arranged in the first mounting shell, and the motor is arranged in the third mounting shell.

[0011] The air-cooled mechanism is arranged in the second mounting shell, the transformer is arranged in the second mounting shell through a transformer working platform, and the transformer is located above the air-cooled mechanism.

[0012] As a further description of the above-mentioned scheme, the second mounting shell is a cylindrical structure with an open top, a first air flow guide plate assembly is arranged at the open top of the second mounting shell, the first air flow guide plate assembly comprises a first guide plate and a second guide plate, one side of the first guide plate is fixedly connected with one side of the open top of the second mounting shell, and the other side of the first guide plate is downwardly inclined; one side of the second guide plate is fixedly connected with the other side of the open top of the second mounting shell, the other side of the second guide plate is downwardly inclined and fixedly connected with the first guide plate, and a predetermined angle is formed between the first guide plate and the second guide plate; a cover plate is arranged at the open top of the second mounting shell, and the cover plate is located above the first guide plate and the second guide plate.

[0013] As a further description of the above-mentioned scheme, the air-cooled mechanism comprises a wind resistance plate, a fan and a second air flow guide plate assembly, the fan is arranged on the transformer working platform, and the fan is located at the lower part of the second mounting shell, and a gap is left between the transformer working platform and the bottom wall of the second mounting shell; a plurality of ventilation holes are formed in the transformer working platform, and each ventilation hole is in communication with the inside of the insulating cylinder.

[0014] The second air flow guide plate assembly is provided with two, two of the second air flow guide plate assemblies are arranged on the transformer working platform, and the two second air flow guide plate assemblies are arranged on the two sides of the transformer respectively; the wind resistance plate is provided with a mounting hole corresponding to the insulating cylinder, and the periphery of the wind resistance plate is sealingly connected with the inner wall of the second air flow guide plate assembly and the second mounting shell respectively.

[0015] As a further description of the above scheme, when the transformer is cooled, the path of the cooling air is: the air flow passes through the gap between the high-voltage winding, the low-voltage winding and the core on the inner side of the insulating cylinder from the air outlet of the fan, then flows to the space between the second air flow guide plate assembly and the side wall of the second mounting shell on both sides through the first air flow guide plate assembly, and then passes through the cavity between the mounting platform and the bottom wall of the second mounting shell downward, and then returns to the air inlet of the fan from the air outlet to complete the circulation.

[0016] As a further description of the above scheme, the second air flow guide plate assembly comprises a vertical connecting plate, a horizontal connecting plate and an arc-shaped plate, the horizontal connecting plate is fixedly arranged on the transformer working platform, one end of the horizontal connecting plate is fixedly connected with the vertical connecting plate, the other end of the vertical connecting plate and the horizontal connecting plate is connected through the arc-shaped plate, and the protruding direction of the arc-shaped plate is consistent with the protruding direction of the side wall of the second mounting shell.

[0017] As a further description of the above scheme, the bottom of the third mounting shell and the second mounting shell is provided with a support frame, and the first mounting shell is fixed to the top of the second mounting shell through the support frame.

[0018] As a further description of the above scheme, the continuous corrugated structure of the cross section of the second mounting shell is formed by pressing, a strip-shaped heat dissipation fin is arranged between adjacent wave crests, and a corrugated fitting strip is arranged between the heat dissipation fin and the adjacent wave crest, and the corrugated fitting strip is made of plastic or epoxy resin.

[0019] Advantages and effects of the present application:

[0020] 1. The second air flow guide plate assembly, the first air flow guide plate assembly and the wind resistance plate establish an efficient air flow channel inside the closed second mounting shell, so that the heat generated by the transformer can be quickly taken to the inner surface of the second mounting shell and the outside for heat exchange.

[0021] 2. The present application promotes the circulation of internal air by the fan at the bottom of the transformer. First, the air flow, under the cooperation of the air resistance plate and the insulation cylinder, flows along the surface of the transformer winding, thereby forming a stable and efficient flow state in the gap between the insulation cylinder and the winding. Then, the second air flow guide plate assembly cooperates with the first air flow guide plate assembly to guide the air flow along the channel between the second air flow guide plate assembly and the inner wall of the second mounting shell. Finally, the air flow, after being cooled by the second mounting shell, returns to the bottom of the fan again. This cooperative working mode also helps to reduce the degree of turbulence of the air flow, reducing energy loss and noise caused by turbulence.

[0022] 3. The second air flow guide plate assembly on both sides of the transformer not only guides the air flow, but also forms a narrow air duct between the second mounting shell inner wall due to its curved design. In a closed space, the gas flow remains constant, and this structure promotes the flow rate of the air flow in the air duct, thereby improving the heat exchange efficiency. The first air flow guide plate assembly at the top of the second mounting shell is made of a material with weak thermal conductivity, which not only disperses the rising air flow to both sides, but also plays a heat insulation function.

[0023] 4. Due to the design of the first air flow guide plate assembly, there is no hot air flow at the top of the second mounting shell, and no heat dissipation is needed here. Therefore, in order to reduce the weight of the shell and provide partial support and fixation for the installation of the frequency converter, the top of the second mounting shell is not closed, and the corrugated fitting strip is fitted with the corrugated shell, and then fixed by bolts. At the same time, with the help of the fitting groove pre-provided on the surface of the corrugated fitting strip, a flat plate is used to close the top of the corrugated shell. This further blocks the heat transfer to the frequency converter, ensuring stable operation of the frequency converter and effectively avoiding failures caused by overheating.

[0024] 5. The continuous corrugated structure design of the second mounting shell increases the heat transfer area, and the concave-convex design of the surface restricts the flow of gas, making the air flow transition from a stable laminar state to a turbulent state, improving the convective heat transfer performance between the air flow and the shell, and efficiently carrying away heat to reduce the operating temperature of the equipment.

[0025] 6. The closed design effectively isolates dust, moisture and other pollution sources in the external environment. This feature greatly reduces the risk of failure caused by the accumulation of pollutants during long-term operation of the equipment.

[0026] 7. The present application adopts an integrated design concept, integrating multiple components in the same system. This design not only saves equipment floor space, but also simplifies the complexity of installation and subsequent maintenance, making it easier to configure in limited space when used on a large scale. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 A three-dimensional schematic diagram of a motor-inverter-transformer overall of an embodiment of the present application;

[0028] Figure 2 A multi-view three-dimensional schematic diagram of a motor-inverter-transformer overall of an embodiment of the present application;

[0029] Figure 3 A three-dimensional assembly schematic diagram of a motor, a motor shell and a motor support platform of an embodiment of the present application;

[0030] Figure 4 A three-dimensional schematic diagram of a transformer and a wind resistance plate of an embodiment of the present application;

[0031] Figure 5 A three-dimensional schematic diagram of a frequency converter of an embodiment of the present application;

[0032] Figure 6 A cross-sectional view of an overall of an embodiment of the present application;

[0033] Figure 7 An assembly diagram of a transformer support platform and a fan of an embodiment of the present application;

[0034] Figure 8 An assembly diagram of a transformer support platform, a fan and a wind guide structure of an embodiment of the present application;

[0035] Figure 9 A second air flow guide plate assembly of an embodiment of the present application;

[0036] Figure 10 A three-dimensional assembly schematic diagram of a wind resistance plate and a T-shaped support of an embodiment of the present application;

[0037] Figure 11 A T-shaped support of an embodiment of the present application;

[0038] Figure 12 A three-dimensional assembly schematic diagram of a first air flow guide plate assembly, a second mounting shell and a corrugated fitting strip of an embodiment of the present application;

[0039] Figure 13 A partial enlarged view of an assembly of a first air flow guide plate assembly and a second mounting shell of an embodiment of the present application;

[0040] Figure 14 A partial enlarged view of an assembly of a corrugated fitting strip and a second mounting shell of an embodiment of the present application;

[0041] Figure 15 A three-dimensional schematic diagram of a second mounting shell of an embodiment of the present application;

[0042] Figure 16 A three-dimensional position schematic diagram of a first air flow guide plate assembly, a cover plate and a corrugated fitting strip of an embodiment of the present application;

[0043] Figure 17 V-shaped fixing frame of the embodiment of the present application;

[0044] Figure 18 Three-dimensional view of the corrugated fitting strip and cover plate of the embodiment of the present application;

[0045] Figure 19 Three-dimensional view of the corrugated fitting strip of the embodiment of the present application;

[0046] Figure 20 Positioning view of the heat dissipation fin of the embodiment of the present application;

[0047] Figure 21 Three-dimensional assembly view of the second mounting shell and the frequency converter of the embodiment of the present application;

[0048] Figure 22 Airflow flow view of the embodiment of the present application;

[0049] Figure 23 Winding temperature distribution nephogram of the embodiment of the present application, wherein (a) is the winding temperature distribution nephogram of the cylindrical shell under natural cooling state, and (b) is the winding temperature distribution nephogram of the corrugated shell under natural cooling state;

[0050] Figure 24 Iron core temperature distribution nephogram of the embodiment of the present application, wherein (a) is the iron core temperature distribution nephogram of the cylindrical shell under natural cooling state, and (b) is the iron core temperature distribution nephogram of the corrugated shell under natural cooling state;

[0051] Figure 25 Shell temperature distribution nephogram of the embodiment of the present application, wherein (a) is the shell temperature distribution nephogram of the cylindrical shell under natural cooling state, and (b) is the shell temperature distribution nephogram of the corrugated shell under natural cooling state;

[0052] Figure 26 Wind speed distribution diagram of the second mounting shell under forced air cooling state of the embodiment of the present application, wherein (a) is the cross-sectional wind speed nephogram of the corrugated shell, and (b) is the wind speed vector diagram of the corrugated shell.

[0053] In the drawings, the components represented by each reference numeral are listed as follows:

[0054] 1. First mounting shell, 2. Motor, 3. Motor box, 4. Support frame, 5. Motor working platform, 6. Second mounting shell, 7. First air flow guide plate assembly, 8. Second air flow guide plate assembly, 9. Insulation cylinder, 10. Transformer working platform, 11. Fan, 12. Bolt, 13. Installation slot, 14. Vent hole, 15. Wind resistance plate, 16. T-shaped support, 17. Cover plate, 18. Corrugated fitting strip, 19. V-shaped fixing frame, 20. Transformer, 21. Insulation cylinder fixing buckle, 22. Radiating fin, 23. Fitting groove, 24. Air flow. DETAILED DESCRIPTION

[0055] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0056] A closed transformer air-cooled corrugated cooling device applied to an integrated device, comprising a shell, a frequency converter, a motor 2, a transformer 20 and an air-cooled mechanism, wherein the shell has a first mounting shell 1 and a second mounting shell 6 and a third mounting shell 3, and the first mounting shell 1 and the second mounting shell 6 and the third mounting shell 3 all have mounting spaces, wherein one side of the second mounting shell 6 is fixedly connected with the first mounting shell 1, wherein the cross section of the second mounting shell 6 is a continuous corrugated structure, and a partition plate is arranged between the second mounting shell 6 and the first mounting shell 1; wherein the third mounting shell 3 is arranged on the other side of the second mounting shell 6; wherein the frequency converter is arranged in the first mounting shell 1, wherein the motor 2 is arranged in the third mounting shell 3; wherein the air-cooled mechanism is arranged in the second mounting shell 6, wherein the transformer 20 is arranged in the second mounting shell 6 through a transformer working platform 10, and the transformer 20 is located above the air-cooled mechanism. The continuous corrugated structure of the cross section of the second mounting shell 6 increases the heat transfer area, and the concave-convex design of the surface restricts the flow of the air flow 24, so that the air flow 24 changes from a stable laminar state to a turbulent state, improves the convective heat transfer performance between the air flow 24 and the shell, can efficiently take away heat, and reduces the equipment operating temperature; an integrated design concept is adopted, and multiple components are integrated in the same system. This design not only saves the equipment floor area, but also simplifies the complexity of installation and subsequent maintenance, so that it can be more conveniently configured in a limited space when applied on a large scale. At the same time, the closed design of the present application effectively isolates dust, moisture and other pollution sources in the external environment. This feature greatly reduces the risk of failure caused by the accumulation of pollutants in the long-term operation of the equipment

[0057] The second installation shell 6 of the embodiment of the present application is a top-opened cylindrical structure, wherein the top opening part of the second installation shell 6 is provided with a first air flow guide plate assembly 7, wherein the first air flow guide plate assembly 7 comprises a first guide plate and a second guide plate, wherein one side of the first guide plate is fixedly connected with one side of the top opening of the second installation shell 6, and the other side of the first guide plate is downwardly inclined; wherein one side of the second guide plate is fixedly connected with the other side of the top opening of the second installation shell 6, and the other side of the second guide plate is downwardly inclined and fixedly connected with the first guide plate, and a predetermined angle is formed between the first guide plate and the second guide plate; the top opening part of the second installation shell 6 is provided with a cover plate 17, and the cover plate 17 is located above the first guide plate and the second guide plate.

[0058] The air cooling mechanism of the embodiment of the present application comprises an air resistance plate 15, a fan 11 and a second air flow guide plate assembly 8, wherein the fan 11 is arranged on the transformer working platform 10, and the fan 11 is located at the lower part of the second installation shell 6, and a gap is left between the transformer working platform 10 and the bottom wall of the second installation shell 6; wherein the transformer working platform 10 is provided with a plurality of ventilation holes 14, and each ventilation hole 14 is in communication with the inside of the insulating cylinder 9;

[0059] The second air flow guide plate assembly 8 is provided with two, and the two second air flow guide plate assemblies 8 are arranged on the transformer working platform 10, and the two second air flow guide plate assemblies 8 are arranged on the two sides of the transformer 20 respectively; wherein the air resistance plate 15 is provided with a mounting hole corresponding to the insulating cylinder 9, and the periphery of the air resistance plate 15 is sealingly connected with the inner wall of the second air flow guide plate assembly 8 and the second installation shell 6 respectively.

[0060] When the transformer 20 of the embodiment of the present application is cooled, the path of the cooling air is as follows: the air flow 24 passes through the gap between the high-voltage winding, the low-voltage winding and the iron core on the inside of the insulating cylinder 9 upwardly from the air outlet of the fan 11, then flows to the space between the second air flow guide plate assembly 8 and the side wall of the second installation shell 6 on both sides through the first air flow guide plate assembly 7, and then passes through the cavity between the mounting platform and the bottom wall of the second installation shell 6 downwardly, and then returns to the air inlet of the fan 11 from the cavity between the mounting platform and the bottom wall of the second installation shell 6 to complete the circulation. In the present application, since the first air flow guide plate assembly 7 is made of non-heat-conducting material and is responsible for shunting the hot air flow, the top of the second installation shell 6 will not appear hot air flow, so that heat dissipation is not needed at this place. Therefore, in order to reduce the weight of the shell and provide partial support and fixation for the installation of the frequency converter, the top of the second installation shell 6 is not closed, the corrugated fitting strip 18 is embedded with the continuous corrugated structure of the second installation shell 6, and then fixed by the bolt 12. In this way, the heat transfer to the frequency converter is further blocked, the stable operation of the frequency converter is ensured, and the failure caused by overheating is effectively avoided.

[0061] The second airflow guide plate assembly 8 of the embodiment of the present application comprises a vertical connecting plate, a horizontal connecting plate and an arc-shaped plate, wherein the horizontal connecting plate is fixedly arranged on the transformer working platform 10, and one end of the horizontal connecting plate is fixedly connected with the vertical connecting plate, and the other end of the vertical connecting plate and the horizontal connecting plate is connected through the arc-shaped plate, and the protruding direction of the arc-shaped plate is consistent with the protruding direction of the side wall of the second installation shell 6. Specifically, the transformer working platform 10 is further provided with a plurality of installation grooves 13, and the horizontal connecting plate is provided with installation protrusions matched with the installation grooves 13, then the protruding part of the horizontal connecting plate is arranged in the installation groove 13, and is fixed by using the bolt 12. The second airflow guide plate assembly 8, the first airflow guide plate assembly 7 and the wind resistance plate 15 are used to establish an efficient air flow channel in the closed second installation shell 6, so that the heat generated by the transformer 20 can be quickly taken to the inner surface of the second installation shell 6 to exchange heat with the outside; the circulation flow of the internal air is promoted by the fan 11 at the bottom of the transformer 20. First, the airflow 24 flows along the surface of the transformer winding under the cooperation of the wind resistance plate 15 and the insulating cylinder 9, so as to form a stable and efficient flow state in the gap between the insulating cylinder 9 and the winding. Then, the second airflow guide plate assembly 8 and the first airflow guide plate assembly 7 are matched with each other to guide the airflow 24 to flow along the channel between the second airflow guide plate assembly 8 and the inner wall of the second installation shell 6. Finally, the airflow 24 is cooled after passing through the second installation shell 6, and then returns to the bottom of the fan again. This cooperative working mode also helps to reduce the turbulence degree of the airflow 24, and reduces the energy loss and noise caused by the turbulence. The second airflow guide plate assembly 8 on both sides of the transformer 20 not only guides the airflow 24, but also forms a narrow air duct between the second airflow guide plate assembly 8 and the inner wall of the second installation shell 6 due to the curved surface design. In the closed space, the gas flow remains constant, and this structure promotes the airflow 24 to flow faster in the air duct, thereby improving the heat exchange efficiency. The first airflow guide plate assembly 7 at the top of the second installation shell 6 is made of a material with weak heat conductivity, which plays a heat insulation function while guiding the upward airflow 24 to disperse to both sides.

[0062] The bottom of the third installation shell 3 and the second installation shell 6 is provided with a support frame 4, wherein the first installation shell 1 is fixed on the top of the second installation shell 6 through the support frame.

[0063] The continuous corrugated structure of the cross section of the second installation shell 6 of the embodiment of the present application is formed by pressing, and a strip-shaped heat dissipation fin 22 is arranged between adjacent wave crests, and a corrugated fitting strip 18 is arranged between the heat dissipation fin 22 and the adjacent wave crest, wherein the corrugated fitting strip 18 is made of plastic or epoxy resin.

[0064] The second air flow guide plate assembly 8 is fixedly connected to the transformer working platform 10 by bolts 12. During the installation and manufacture of the transformer 20, the insulating cylinder 9 is pre-assembled with the wind resistance plate 15 by the insulating cylinder fixing buckle 21 to achieve accurate positioning and fixing. In addition, the T-shaped support 16 is installed on the second air flow guide plate assembly 8 to further firmly combine the wind resistance plate 15 with the second air flow guide plate assembly 8, thereby significantly improving the stability of the overall equipment. The first air flow guide plate assembly 7 is connected to the inner surface of the second mounting shell 6 by a connecting part which is fixedly connected to the second mounting shell 6 by bolts 12.

[0065] Specifically, the first and second guide plates of the first air flow guide plate assembly 7 are fixedly connected to the second mounting shell 6 by the V-shaped fixing frame 19. In addition, the second mounting shell 6 is provided with a fitting groove 23 at the opening at the top thereof, so as to facilitate the insertion of the cover plate 17 into the fitting groove 23, and then the rubber sealing strip inside the fitting groove 23 further improves the sealing effect of the whole.

[0066] The first mounting shell 1 is provided with a wire groove reserved for the frequency converter below, which is embedded in the recess formed by the cover plate 17, the corrugated fitting strip 18 and the second mounting shell 6. The wire groove plays a role of positioning and fixing for the installation of the frequency converter. The heat dissipation fins 22 are arranged in the middle of the adjacent corrugated surfaces during the casting of the second mounting shell 6. The motor 2 is arranged on the outgoing line side of the second mounting shell 6, and heat insulation is achieved by using a material with poor heat conductivity at this position. The motor 2 is connected to the motor box 3 by the motor working platform 5.

[0067] Figure 23 to Figure 25 The temperature distribution cloud maps of the winding, the core and the second mounting shell 6 inside the transformer 20 under the natural cooling state are respectively shown for the cylindrical shell and the corrugated shell. Figure 23 (a) is a winding temperature distribution cloud map of the cylindrical shell under the natural cooling state, Figure 23 (b) is a winding temperature distribution cloud map of the corrugated shell under the natural cooling state; Figure 24 (a) is a core temperature distribution cloud map of the cylindrical shell under the natural cooling state, Figure 24 (b) is a core temperature distribution cloud map of the corrugated shell under the natural cooling state; Figure 25 (a) is a cylindrical shell temperature distribution cloud map under the natural cooling state from different perspectives, Figure 25 (b) is a corrugated shell temperature distribution cloud map under the natural cooling state from different perspectives. As can be seen from the figures, the shell of the transformer 20 is changed to the second mounting shell 6. Due to the corrugated structure of the second mounting shell 6, the maximum temperature of the winding is reduced by 533℃, the maximum temperature of the core is reduced by 461.1℃, and the maximum temperature of the shell is reduced by 317.2℃, which plays a significant cooling role.

[0068] Figure 26The wind velocity distribution map of the second installation housing 6 in forced air cooling state is shown in Fig. 6, wherein Figure 26 (a) is the cross-sectional cloud map of the internal wind velocity of the corrugated shell, Figure 26 (b) is the vector diagram of the internal wind velocity of the corrugated shell. It can be seen from the diagram that the first air flow guide plate assembly 7 and the second air flow guide plate assembly 8 cooperate to improve the wind velocity and guide the flow of the air flow 24.

[0069] The above is only a few embodiments of the present application, and does not limit the present application in any form. Although the preferred embodiments are disclosed above, the present application is not limited thereto. Any skilled person in the art can make some changes or modifications to the disclosed technical content without departing from the scope of the technical solution of the present application, which are equivalent to equivalent embodiments and belong to the scope of the technical solution.

Claims

1. A closed transformer air-cooled corrugated cooling device applied to an integrated device, characterized by, The utility model provides a kind of air-cooled transformer, including shell, frequency converter, motor (2), transformer (20) and air cooling mechanism, the shell has first mounting shell (1) and second mounting shell (6) and third mounting shell (3), and the first mounting shell (1) and second mounting shell (6) and third mounting shell (3) are all with installation space, one side of the second mounting shell (6) is fixedly connected with first mounting shell (1), the cross section of the second mounting shell (6) is continuous wave structure, and the second mounting shell (6) is provided with baffle between first mounting shell (1);The third mounting shell (3) is arranged at the other side of the second mounting shell (6); The frequency converter is arranged in the first mounting shell (1), and the motor (2) is arranged in the third mounting shell (3); The air cooling mechanism is arranged in the second mounting shell (6), and the transformer (20) is arranged in the second mounting shell (6) through the transformer working platform (10), and the transformer (20) is located above the air cooling mechanism; The air cooling mechanism includes air resistance plate (15), fan (11) and second airflow guide plate assembly (8), the fan (11) is arranged on the transformer working platform (10), and the fan (11) is located at the lower part of the second mounting shell (6), and a gap is left between the transformer working platform (10) and the bottom wall of the second mounting shell (6);The transformer working platform (10) is provided with a plurality of ventilation holes (14), and each ventilation hole (14) is communicated with the inside of the insulating cylinder (9); The second airflow guide plate assembly (8) is provided with two, and the two second airflow guide plate assemblies (8) are arranged on the transformer working platform (10), and the two second airflow guide plate assemblies (8) are arranged on the two sides of the transformer (20) respectively;The air resistance plate (15) is provided with a mounting hole corresponding to the insulating cylinder (9), and the periphery of the air resistance plate (15) is sealingly connected with the second airflow guide plate assembly (8) and the inner wall of the second mounting shell (6) respectively; When the transformer (20) is cooled, the path of the cooling air is as follows: the airflow (24) passes through the gap between the high-voltage winding, the low-voltage winding and the core inside the insulating cylinder (9) from the air outlet of the fan (11) upwards, then flows to the space between the second airflow guide plate assembly (8) and the side wall of the second mounting shell (6) through the first airflow guide plate assembly (7), and then passes through the cavity between the mounting platform and the bottom wall of the second mounting shell (6) downwards, and then returns to the fan inlet from the fan outlet through the ventilation hole to complete the circulation.

2. The closed transformer air-cooled corrugated cooling device applied to an integrated device according to claim 1, characterized in that: The second installation shell (6) is a top-opened cylindrical structure, and a first air flow guide plate assembly (7) is arranged at the top opening part of the second installation shell (6), wherein the first air flow guide plate assembly (7) comprises a first guide plate and a second guide plate, one side of the first guide plate is fixedly connected with one side of the top opening of the second installation shell (6), and the other side of the first guide plate is downwardly inclined; one side of the second guide plate is fixedly connected with the other side of the top opening of the second installation shell (6), the other side of the second guide plate is downwardly inclined and fixedly connected with the first guide plate, and a predetermined angle is formed between the first guide plate and the second guide plate; a cover plate (17) is arranged at the top opening part of the second installation shell (6), and the cover plate (17) is located above the first guide plate and the second guide plate.

3. The closed transformer air-cooled corrugated cooling device applied to an integrated device according to claim 1, characterized in that: The second air flow guide plate assembly (8) comprises a vertical connecting plate, a horizontal connecting plate and an arc-shaped plate, the horizontal connecting plate is fixedly arranged on the transformer working platform (10), one end of the horizontal connecting plate is fixedly connected with the vertical connecting plate, the other end of the vertical connecting plate and the horizontal connecting plate is connected through the arc-shaped plate, and the protruding direction of the arc-shaped plate is consistent with the protruding direction of the side wall of the second installation shell (6).

4. The closed transformer air-cooled corrugated cooling device applied to an integrated device according to claim 1, characterized in that: The bottom of the third installation shell (3) and the second installation shell (6) is provided with a support frame (4), and the first installation shell (1) is fixedly arranged on the top of the second installation shell (6) through the support frame.

5. The closed transformer air-cooled corrugated cooling device applied to an integrated device according to claim 1, characterized in that: The continuous wave structure of the cross section of the second installation shell (6) is formed by pressing, strip-shaped heat dissipation fins (22) are arranged between adjacent wave crests, wave-embedded strips (18) are arranged between the heat dissipation fins (22) and the adjacent wave crests, and the wave-embedded strips (18) are made of plastic or epoxy resin.

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