Closed transformer air-cooling corrugated cooling device applied to integrated equipment

Abstract

The closed transformer air-cooling corrugated cooling device comprises a machine shell, a frequency converter, a motor, a transformer and an air-cooling mechanism, the machine shell is provided with a first installation shell, a second installation shell and a third installation shell, and the section of the second installation shell is of a continuous corrugated structure; the frequency converter is arranged in the first mounting shell, and the motor is arranged in the third mounting shell; the air cooling mechanism is arranged in the second mounting shell, the transformer is arranged in the second mounting shell through the transformer working platform, and the transformer is located above the air cooling mechanism. The corrugated shell has the advantages that the heat transfer area can be increased, meanwhile, the concave-convex design of the corrugated shell can guide airflow, the convection effect of the airflow is enhanced, and the running temperature of equipment is reduced. Meanwhile, according to the integration concept, a plurality of assemblies are integrated into the same system, the occupied space is saved, the installation and maintenance process is simplified, and when the device is applied in a large scale, the device can be arranged in a limited space more easily.

Description

Technical Field

[0001] The present invention relates to the technical field of transformer cooling, and in particular to a closed-type transformer air-cooled corrugated cooling device applied to integrated equipment. Background Art

[0002] In modern industry, integrated equipment has been widely used in numerous production scenarios due to its high integration, compact footprint, and efficient operation. Transformers, as crucial power conversion components in integrated equipment, play a vital role in ensuring stable power supply. However, during operation, transformers inevitably generate heat. If this heat cannot be dissipated promptly and effectively, it will seriously affect the performance of the transformer, and in turn, the operating efficiency and reliability of the entire integrated equipment.

[0003] In the past, transformer heat dissipation relied primarily on a single, natural cooling method, which was only suitable for low-power, low-heat-generating equipment. Natural heat dissipation proved insufficient for the massive amounts of heat generated by high-power transformers in integrated equipment. Subsequently, air cooling technology gradually became mainstream. This technology uses fans to promote air flow, removing heat from the transformer surface and offering significant performance improvements over natural cooling. However, traditional air cooling devices typically utilize a flat housing structure, which presents several drawbacks. On the one hand, a flat housing hinders air turbulence, resulting in inadequate heat exchange and difficulty achieving ideal heat dissipation efficiency. On the other hand, the compact layout of integrated equipment places strict demands on the spatial adaptability of the heat dissipation device. Conventional air cooling devices, due to their size and shape, are difficult to perfectly integrate, occupying valuable space and making them difficult to coordinate with other components.

[0004] As integrated equipment evolves toward higher precision and efficiency, the requirements for transformer protection are also increasing. Once external pollutants such as dust, moisture, and corrosive gases enter the transformer, they can cause insulation degradation and circuit corrosion, directly threatening equipment safety. Therefore, enclosed protective designs are key to addressing this issue. However, enclosed structures exacerbate heat dissipation issues, making traditional air cooling methods difficult to meet the heat dissipation requirements of closed environments.

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

[0006] Purpose of the Invention

[0007] The purpose of the present invention is to provide an enclosed transformer air-cooled corrugated cooling device for integrated equipment. In order to solve the problem of insufficient heat dissipation capacity of the transformer in highly integrated equipment under limited space conditions, the present invention provides an efficient, stable and safe enclosed air-cooled corrugated cooling device. The purpose is to improve the heat dissipation effect of the transformer by optimizing the design of the cooling system, ensuring that the equipment continues to operate safely, reliably and stably under high-power operating conditions.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A closed transformer air-cooled corrugated cooling device for integrated equipment includes a housing, a frequency converter, a motor, a transformer, and an air cooling mechanism. The housing includes a first mounting shell, a second mounting shell, and a third mounting shell. The first mounting shell, the second mounting shell, and the third mounting shell each have mounting spaces therein. One side of the second mounting shell is fixedly connected to the first mounting shell. The cross-section of the second mounting shell is a continuous corrugated structure, and a partition is provided between the second mounting shell and the first mounting shell. The third mounting shell is provided on top of the second mounting shell.

[0010] The frequency converter is arranged in the first installation housing, and the motor is arranged in the third installation housing;

[0011] The air cooling mechanism is arranged in the second installation shell, the transformer is arranged in the second installation shell through the transformer working platform, and the transformer is located above the air cooling mechanism.

[0012] As a further description of the above scheme, the second mounting shell is a cylindrical structure with an opening at the top, and a first air flow guide plate assembly is provided at the top opening portion of the second mounting shell, and the first air flow guide plate assembly includes a first guide plate and a second guide plate, one side of the first guide plate is fixedly connected to one side of the top opening of the second mounting shell, and the other side of the first guide plate is tilted downward; one side of the second guide plate is fixedly connected to the other side of the top opening of the second mounting shell, and the other side of the second guide plate is tilted downward and fixedly connected to the first guide plate, and a predetermined angle is formed between the first guide plate and the second guide plate; a cover plate is provided at the top opening portion 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 solution, the air cooling mechanism includes 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; the transformer working platform is provided with a plurality of ventilation holes, each of which is connected to the interior of the insulating cylinder;

[0014] Two second airflow guide plate assemblies are provided, both of which are arranged on the transformer working platform, and the two second airflow guide plate assemblies are respectively arranged on both sides of the transformer; the air blocking plate is provided with a mounting hole corresponding to the insulating cylinder, and the four sides of the air blocking plate are respectively sealed with the second airflow guide plate assembly and the inner wall of the second mounting shell.

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

[0016] As a further description of the above scheme, the second air flow guide plate assembly includes 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, and one end of the horizontal connecting plate is fixedly connected to the vertical connecting plate. The other ends of the vertical connecting plate and the horizontal connecting plate are connected by an 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 solution, a support frame is provided at the bottom of the first installation shell and the second installation shell, and the third installation shell is fixed to the top of the second installation shell through a bracket.

[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 press molding, strip-shaped heat dissipation fins are arranged between adjacent peaks, and corrugated interlocking strips are arranged between the heat dissipation fins and adjacent peaks, and the corrugated interlocking strips are made of plastic or epoxy resin.

[0019] Advantages and effects of the present invention:

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

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

[0022] 3. The second airflow guide plate assemblies on both sides of the transformer not only guide airflow but, due to their curved design, form a narrow air duct between them and the inner wall of the second mounting housing. This structure maintains a constant air flow within the enclosed space, accelerating the airflow in the duct and improving heat exchange efficiency.

[0023] The first airflow guide plate assembly on the top of the second mounting shell is made of a material with relatively weak thermal conductivity. It guides the rising airflow to disperse to both sides while also playing a heat insulation function.

[0024] 4. Due to the design of the first airflow guide plate assembly of the present invention, no hot air flows at the top of the second mounting shell, and heat dissipation is not required there. Therefore, in order to reduce the weight of the shell and provide partial support and fixation for the placement of the inverter, the top of the second mounting shell is not closed. The corrugated interlocking strip and the corrugated shell are interlocked and then fixed with bolts. At the same time, with the help of the interlocking grooves pre-set on the surface of the corrugated interlocking strip, a flat plate is used to seal the top of the corrugated shell. This further blocks the transfer of heat to the inverter, ensuring stable operation of the inverter and effectively avoiding failures caused by overheating.

[0025] 4. The continuous corrugated structure design of the second mounting shell of the present invention increases the heat transfer area, and the concave and convex design of the surface constrains the flow of gas, causing the airflow to transition from a stable laminar state to a turbulent state, thereby improving the convective heat exchange performance between the airflow and the shell, and can efficiently remove heat and reduce the operating temperature of the equipment.

[0026] 5. The enclosed design of this invention effectively isolates external pollution sources such as dust and moisture. This feature significantly reduces the risk of equipment failure caused by accumulation of pollutants during long-term operation.

[0027] 7. This invention adopts an integrated design concept, integrating multiple components into a single system. This design not only saves equipment space but also simplifies installation and subsequent maintenance, making it easier to configure within limited spaces for large-scale applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a three-dimensional schematic diagram of the motor-inverter-transformer according to an embodiment of the present invention;

[0029] Figure 2 A three-dimensional schematic diagram of a motor-inverter-transformer system from multiple perspectives according to an embodiment of the present invention;

[0030] Figure 3 A schematic diagram of the three-dimensional assembly of a motor, a motor housing, and a motor support platform according to an embodiment of the present invention;

[0031] Figure 4 A three-dimensional schematic diagram of a transformer and a windage plate according to an embodiment of the present invention;

[0032] Figure 5 A three-dimensional schematic diagram of a frequency converter according to an embodiment of the present invention;

[0033] Figure 6 This is a cross-sectional view of the entire device according to an embodiment of the present invention;

[0034] Figure 7 This is an assembly diagram of a transformer support platform and a fan according to an embodiment of the present invention;

[0035] Figure 8 This is an assembly diagram of the transformer support platform, fan, and air guide structure according to an embodiment of the present invention;

[0036] Figure 9 A second air flow guide plate assembly according to an embodiment of the present invention;

[0037] Figure 10 A three-dimensional schematic diagram of the assembly of the wind resistance plate and the T-shaped bracket according to an embodiment of the present invention;

[0038] Figure 11 A T-shaped bracket according to an embodiment of the present invention;

[0039] Figure 12 Schematic diagram of the assembly of the first airflow guide plate assembly, the second mounting housing, and the corrugated interlocking strip according to an embodiment of the present invention;

[0040] Figure 13 This is a partial enlarged view of the assembly of the first airflow guide plate assembly and the second mounting housing according to an embodiment of the present invention;

[0041] Figure 14 This is a partial enlarged view of the assembly of the corrugated interlocking strip and the second mounting housing according to an embodiment of the present invention;

[0042] Figure 15 A three-dimensional schematic diagram of a second mounting housing according to an embodiment of the present invention;

[0043] Figure 16A schematic diagram of the three-dimensional positions of the first airflow guide plate assembly, the cover plate, and the corrugated interlocking strip according to an embodiment of the present invention;

[0044] Figure 17 A V-shaped fixing bracket according to an embodiment of the present invention;

[0045] Figure 18 A three-dimensional schematic diagram of a corrugated interlocking strip and a cover plate according to an embodiment of the present invention;

[0046] Figure 19 A three-dimensional schematic diagram of a corrugated interlocking strip according to an embodiment of the present invention;

[0047] Figure 20 This is a schematic diagram of the positions of the heat dissipation fins according to an embodiment of the present invention;

[0048] Figure 21 This is a schematic diagram of the three-dimensional assembly of the second mounting housing and the inverter according to an embodiment of the present invention;

[0049] Figure 22 Schematic diagram of airflow according to an embodiment of the present invention;

[0050] Figure 23 The temperature distribution cloud diagrams of the windings of the embodiment of the present invention are shown, wherein (a) is the temperature distribution cloud diagram of the cylindrical shell winding under natural cooling, and (b) is the temperature distribution cloud diagram of the corrugated shell winding under natural cooling;

[0051] Figure 24 The temperature distribution cloud diagrams of the cores according to the embodiment of the present invention are shown, wherein (a) is the temperature distribution cloud diagram of the cylindrical shell core under natural cooling, and (b) is the temperature distribution cloud diagram of the corrugated shell core under natural cooling;

[0052] Figure 25 Figure 2 shows the temperature distribution cloud diagram of the shell of an embodiment of the present invention. (a) shows the temperature distribution cloud diagram of the cylindrical shell at different viewing angles under natural cooling conditions. (b) shows the temperature distribution cloud diagram of the corrugated shell at different viewing angles under natural cooling conditions.

[0053] Figure 26 This is a wind speed distribution diagram of the second installation shell in the forced air cooling state of an embodiment of the present invention, where Figure (a) is a cross-sectional cloud diagram of the wind speed inside the corrugated shell, and Figure (b) is a vector diagram of the wind speed inside the lower part of the corrugated shell.

[0054] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0055] 1. First mounting housing, 2. Motor, 3. Motor housing, 4. Support frame, 5. Motor working platform, 6. Second mounting housing, 7. First airflow guide plate assembly, 8. Second airflow guide plate assembly, 9. Insulation tube, 10. Transformer working platform, 11. Fan, 12. Bolt, 13. Mounting slot, 14. Ventilation hole, 15. Wind resistance plate, 16. T-shaped bracket, 17. Cover, 18. Corrugated fitting strip, 19. V-shaped fixing frame, 20. Transformer, 21. Insulation tube fixing buckle, 22. Heat dissipation fin, 23. Fitting slot, 24. Airflow. DETAILED DESCRIPTION

[0056] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0057] A closed transformer air-cooled corrugated cooling device for integrated equipment includes a casing, a frequency converter, a motor 2, a transformer 20 and an air-cooling mechanism, wherein the casing has a first mounting shell 1, a second mounting shell 6 and a third mounting shell 3, and the first mounting shell 1, the second mounting shell 6 and the third mounting shell 3 each have an installation space, wherein one side of the second mounting shell 6 is fixedly connected to the first mounting shell 1, wherein the cross-section of the second mounting shell 6 is a continuous corrugated structure, and a partition is provided between the second mounting shell 6 and the first mounting shell 1; wherein the third mounting shell 3 is arranged on the top 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-cooling mechanism is arranged in the second mounting shell 6, wherein 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 design of the continuous corrugated structure of the cross section of the second mounting shell 6 of the present invention increases the heat transfer area. At the same time, the concave-convex design of the surface constrains the flow of the airflow 24, causing the airflow 24 to transition from a stable laminar state to a turbulent state, thereby improving the convective heat transfer performance between the airflow 24 and the outer shell, and can efficiently take away heat and reduce the operating temperature of the equipment. An integrated design concept is adopted to integrate multiple components into the same system. This design not only saves equipment floor space, but also simplifies the complexity of installation and subsequent maintenance, making it more convenient to configure in a limited space for large-scale applications. At the same time, the present invention adopts a closed design to effectively isolate dust, moisture and other pollution sources in the external environment. This feature greatly reduces the risk of equipment failure caused by the accumulation of pollutants during long-term operation.

[0058] The second mounting shell 6 of the embodiment of the present invention is a cylindrical structure with an opening at the top, wherein a first air flow guide plate assembly 7 is provided at the top opening portion of the second mounting shell 6, wherein the first air flow guide plate assembly 7 includes a first guide plate and a second guide plate, wherein one side of the first guide plate is fixedly connected to one side of the top opening of the second mounting shell 6, and the other side of the first guide plate is inclined downward; wherein one side of the second guide plate is fixedly connected to the other side of the top opening of the second mounting shell 6, the other side of the second guide plate is inclined downward and fixedly connected to 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 provided at the top opening portion of the second mounting shell 6, and the cover plate 17 is located above the first guide plate and the second guide plate.

[0059] The air cooling mechanism of the embodiment of the present invention includes a wind 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 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; wherein the transformer working platform 10 is provided with a plurality of ventilation holes 14, each of which is connected to the interior of the insulating cylinder 9;

[0060] Two second airflow guide plate assemblies 8 are provided, both of which are arranged on the transformer working platform 10, and the two second airflow guide plate assemblies 8 are respectively arranged on both sides of the transformer 20; the air blocking plate 15 is provided with a mounting hole corresponding to the insulating cylinder 9, and the four sides of the air blocking plate 15 are respectively sealed with the second airflow guide plate assembly 8 and the inner wall of the second mounting shell 6.

[0061] When the transformer 20 described in the embodiment of the present invention is cooled, the path of the cooling air is as follows: the air flow 24 flows upward from the air outlet of the fan 11 through the gap between the high-voltage winding, the low-voltage winding and the iron core inside the insulating tube 9, and then flows through the first air flow guide plate assembly 7 to the space between the second air flow guide plate assembly 8 and the side wall of the second mounting shell 6 on both sides, and then passes downward through the cavity between the mounting platform and the bottom wall of the second mounting shell 6, and returns to the air inlet of the fan 11 through the cavity between the mounting platform and the bottom wall of the second mounting shell 6 to complete the cycle. In the present invention, since the first air flow guide plate assembly 7 is made of non-conductive material and is responsible for diverting the hot air flow, there will be no hot air flow at the top of the second mounting shell 6, so there is no need to dissipate heat there. Therefore, in order to reduce the weight of the shell and provide partial support and fixation for the placement of the inverter, the top of the second mounting shell 6 is not closed, and the corrugated interlocking strip 18 is interlocked with the continuous corrugated structure of the second mounting shell 6, and then fixed by bolts 12. This further blocks the transfer of heat to the inverter, ensuring stable operation of the inverter and effectively avoiding failures caused by overheating.

[0062] The second airflow guide plate assembly 8 of the embodiment of the present invention includes a vertical connecting plate, a horizontal connecting plate, and an arc-shaped plate. The horizontal connecting plate is fixedly mounted on the transformer working platform 10, and one end of the horizontal connecting plate is fixedly connected to the vertical connecting plate. The other ends of the vertical connecting plate and the horizontal connecting plate are connected by an arc-shaped plate, and the protrusion direction of the arc-shaped plate is consistent with the protrusion direction of the side wall of the second mounting shell 6. Specifically, the transformer working platform 10 is also provided with a plurality of mounting slots 13, and the horizontal connecting plate is provided with a mounting protrusion that cooperates with the mounting slots 13. The protrusion portion of the horizontal connecting plate is then placed in the mounting slot 13 and fixed with bolts 12. The present invention establishes an efficient air flow channel within the closed second mounting shell 6 through the second airflow guide plate assembly 8, the first airflow guide plate assembly 7, and the wind resistance plate 15, so that the heat generated by the transformer 20 can be quickly brought to the inner surface of the second mounting shell 6 for heat exchange with the outside world; the fan 11 at the bottom of the transformer 20 promotes the circulation of internal air. First, the airflow 24 flows along the surface of the transformer windings, synergistically acting between the windshield 15 and the insulating cylinder 9. This creates a stable and efficient flow in the gap between the insulating cylinder 9 and the windings. Next, the second airflow guide plate assembly 8 and the first airflow guide plate assembly 7 work together to guide the airflow 24 along the channel between the second airflow guide plate assembly 8 and the inner wall of the second mounting shell 6. Finally, after cooling through the second mounting shell 6, the airflow 24 returns to the bottom of the blower. This collaborative operation also helps reduce turbulence in the airflow 24, minimizing energy loss and noise caused by turbulence. The second airflow guide plate assemblies 8 on both sides of the transformer 20 not only guide the airflow 24 but also, due to their curved design, form narrow air ducts between them and the inner wall of the second mounting shell 6. Within the enclosed space, the gas flow remains constant. This structure accelerates the velocity of the airflow 24 in the duct, thereby improving heat exchange efficiency. The first airflow guide plate assembly 7 at the top of the second mounting shell 6 is made of a material with low thermal conductivity. While dispersing the rising airflow 24 to the sides, it also provides thermal insulation.

[0063] In the embodiment of the present invention, a support frame 4 is provided at the bottom of the first installation shell 1 and the second installation shell 6 , wherein the third installation shell 3 is fixed to the top of the second installation shell 6 through a bracket.

[0064] The continuous corrugated structure of the cross section of the second mounting shell 6 of the embodiment of the present invention is formed by pressing, and strip-shaped heat dissipating fins 22 are arranged between adjacent wave crests, and corrugated interlocking strips 18 are arranged between the heat dissipating fins 22 and adjacent wave crests, wherein the corrugated interlocking strips 18 are made of plastic or epoxy resin.

[0065] The second airflow guide plate assembly 8 is firmly fixed to the transformer work platform 10 by bolts 12. During the installation and manufacturing process of the transformer 20, the insulating cylinder 9 is pre-assembled into one piece with the wind baffle 15 by the insulating cylinder fixing clip 21 to achieve precise positioning and fixation. In addition, a T-shaped bracket 16 is installed on the second airflow guide plate assembly 8 to further firmly combine the wind baffle 15 with the second airflow guide plate assembly 8, thereby significantly improving the stability of the entire device. The first airflow guide plate assembly 7 is connected to the inner surface of the second mounting shell 6 by a connecting part, and the connecting part is tightly fixed to the second mounting shell 6 by bolts 12.

[0066] Specifically, the first guide plate and the second guide plate of the first air flow guide plate assembly 7 are fixedly connected to the second mounting shell 6 through a V-shaped fixing frame 19. In addition, a fitting groove 23 is provided at the top opening of the second mounting shell 6 to facilitate the insertion of the cover plate 17 therein, and then the overall sealing effect is further improved by the rubber sealing strip inside the fitting groove 23.

[0067] The first mounting housing 1 has a pre-recorded wire duct for the inverter underneath, which slots neatly into the recess formed by the cover plate 17, the corrugated interlocking strips 18, and the second mounting housing 6. This provides positioning and securement for the inverter. During casting, the second mounting housing 6 features heat dissipation fins 22 positioned between adjacent corrugated surfaces. The motor 2 is mounted on the wire outlet side of the second mounting housing 6, where it is insulated with a material with poor thermal conductivity. The motor 2 is connected to the motor housing 3 via the motor work platform 5.

[0068] Figures 23 to 25 The temperature distribution cloud diagrams of the cylindrical shell and the corrugated shell, the internal windings of the transformer 20, the iron core and the second mounting shell 6 under natural cooling are shown respectively. Figure 23 (a) is the temperature distribution cloud of the cylindrical shell winding under natural cooling state. Figure 23 (b) is the temperature distribution cloud diagram of the corrugated shell winding under natural cooling state; Figure 24 (a) is the temperature distribution cloud diagram of the cylindrical shell core under natural cooling state. Figure 24 (b) is the temperature distribution cloud diagram of the corrugated shell core under natural cooling state; Figure 25 (a) is the temperature distribution cloud diagram of the cylindrical shell at different viewing angles under natural cooling state. Figure 25 (b) shows the temperature distribution contours of the corrugated housing at different viewing angles under natural cooling conditions. The figure shows that replacing the transformer 20 housing with the second mounting housing 6 significantly reduces the maximum winding temperature by 533°C, the maximum core temperature by 461.1°C, and the maximum housing temperature by 317.2°C, thanks to the corrugated structure of the second mounting housing 6. This significantly reduces the cooling effect.

[0069] Figure 26The wind speed distribution diagram of the second mounting shell 6 under forced air cooling state, where Figure 26 (a) is the wind speed cross-section cloud diagram inside the corrugated shell, Figure 26 (b) is a vector diagram of the wind speed inside the corrugated housing. As can be seen from the figure, the first airflow guide plate assembly 7 and the second airflow guide plate assembly 8 cooperate with each other to increase the wind speed and guide the flow of the airflow 24.

[0070] The above descriptions are merely a few embodiments of the present application and do not constitute any form of limitation to the present application. Although the present application discloses the preferred embodiments as above, they are not intended to limit the present application. Any technical personnel familiar with the present profession, without departing from the scope of the technical solution of the present application, using the technical content disclosed above to make slight changes or modifications are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A closed transformer air-cooled corrugated cooling device applied to integrated equipment, characterized in that: The invention comprises a casing, a frequency converter, a motor (2), a transformer (20) and an air cooling mechanism, wherein the casing comprises a first mounting shell (1), a second mounting shell (6) and a third mounting shell (3), and the first mounting shell (1), the second mounting shell (6) and the third mounting shell (3) all have mounting spaces therein, one side of the second mounting shell (6) is fixedly connected to the first mounting shell (1), the cross section of the second mounting shell (6) is a continuous corrugated structure, and a partition is arranged between the second mounting shell (6) and the first mounting shell (1); the third mounting shell (3) is arranged on the top of the second mounting shell (6); The frequency converter is arranged in a first installation housing (1), and the motor (2) is arranged in a third installation housing (3); The air cooling mechanism is arranged in the second installation shell (6), the transformer (20) is arranged in the second installation shell (6) via a transformer working platform (10), and the transformer (20) is located above the air cooling mechanism.

2. The enclosed transformer air-cooled corrugated cooling device for integrated equipment according to claim 1 is characterized in that: The second mounting shell (6) is a cylindrical structure with an opening at the top. The top opening of the second mounting shell (6) is provided with a first airflow guide plate assembly (7). The first airflow guide plate assembly (7) comprises a first guide plate and a second guide plate. One side of the first guide plate is fixedly connected to one side of the top opening of the second mounting shell (6), and the other side of the first guide plate is tilted downward. One side of the second guide plate is fixedly connected to the other side of the top opening of the second mounting shell (6), and the other side of the second guide plate is tilted downward and fixedly connected to the first guide plate, and a predetermined angle is formed between the first guide plate and the second guide plate. The top opening of the second mounting 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.

3. The enclosed transformer air-cooled corrugated cooling device for integrated equipment according to claim 2 is characterized in that: The air cooling mechanism comprises a wind resistance plate (15), a fan (11) and a second air flow guide plate assembly (8); the fan (11) is arranged on the transformer working platform (10), and the fan (11) is located at the bottom 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); the transformer working platform (10) is provided with a plurality of ventilation holes (14), and each of the ventilation holes (14) is connected to the interior of the insulation cylinder (9); Two second airflow guide plate assemblies (8) are provided, and the two second airflow guide plate assemblies (8) are both arranged on the transformer working platform (10), and the two second airflow guide plate assemblies (8) are respectively arranged on both sides of the transformer (20); the air blocking plate (15) is provided with a mounting hole corresponding to the insulating cylinder (9), and the four sides of the air blocking plate (15) are respectively sealed and connected to the second airflow guide plate assembly (8) and the inner wall of the second mounting shell (6).

4. The enclosed transformer air-cooled corrugated cooling device for integrated equipment according to claim 3 is characterized in that: When the transformer (20) is cooled, the path of the cooling air is as follows: the airflow (24) flows upward from the air outlet of the fan (11) through the gaps between the high-voltage winding, the low-voltage winding and the iron core inside the insulating tube (9), then flows through the first airflow guide plate assembly (7) to the space between the second airflow guide plate assembly (8) and the side wall of the second mounting shell 6 on both sides, and downward through the cavity between the mounting platform and the bottom wall of the second mounting shell (6), and returns from the cavity between the mounting platform and the bottom wall of the second mounting shell (6) through the vent to complete the cycle from the fan air inlet.

5. The enclosed transformer air-cooled corrugated cooling device for integrated equipment according to claim 3 is characterized in that: The second airflow guide plate assembly (8) 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 to the vertical connecting plate, and the other ends of the vertical connecting plate and the horizontal connecting plate are connected via an 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 (6).

6. The enclosed transformer air-cooled corrugated cooling device for integrated equipment according to claim 3 is characterized in that: A support frame (4) is provided at the bottom of the first installation shell (1) and the second installation shell (6), and the third installation shell (3) is fixed to the top of the second installation shell (6) via a bracket.

7. The enclosed transformer air-cooled corrugated cooling device for integrated equipment according to claim 3 is characterized in that: The continuous corrugated structure of the cross section of the second mounting shell (6) is formed by pressing, strip-shaped heat dissipation fins (22) are arranged between adjacent wave crests, and corrugated interlocking strips (18) are arranged between the heat dissipation fins (22) and adjacent wave crests, and the corrugated interlocking strips (18) are made of plastic or epoxy resin.

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