American transformer with protection effect

Abstract

The utility model discloses an American transformer with a protection effect, which comprises a transformer body and a first cover plate fixedly arranged on the transformer body, the first cover plate is provided with a rotatable transmission arm, the transmission arm is provided with a rotatable sun shield and is positioned above each outer side wall of the transformer body, and the sun shield is arranged on the transformer body. Damping positioning devices are arranged between the transmission arm and the first cover plate and between the transmission arm and the sun shield and used for fixing the transmission arm or the sun shield to the adjusted position, and a second cover plate is arranged above the first cover plate. The angle between the sun shield and the first cover plate and the included angle between the sun shield and the outer side wall of the transformer body are adjusted through the transmission arm, the sun-shading range and the extension angle are controlled, flexible position adjustment is achieved, the first extension part blocks rainwater from splashing in, the second extension part guides rainwater to be drained, the angle of the sun shield is adjusted, strong light is effectively shielded, the oil temperature is reduced, and aging of insulating materials is delayed; the operation stability is improved, the service life is prolonged, and the heat insulation effect is enhanced through the reflective coating.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, and in particular to an American-style transformer with protective effects. Background Technology

[0002] A transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main components are the primary coil, secondary coil, and iron core. Its main functions include voltage transformation, current transformation, impedance transformation, isolation, and voltage stabilization. American transformers are characterized by their small size, light weight, low noise, low loss, and high reliability, and are therefore widely used in residential areas, commercial centers, light stations, airports, factories, mines, enterprises, hospitals, schools, and other places.

[0003] American-style transformers are mostly installed outdoors, exposed to direct sunlight. The surface temperature of the transformer tank exceeds 60°C, and the internal oil temperature can reach over 75°C, exceeding the standard upper limit of 55-65°C. This leads to a decrease in transformer oil viscosity and weakened heat dissipation, creating a cycle of rising temperature and reduced heat dissipation capacity. High temperatures inhibit natural convection cooling, especially pronounced in transformers without oil-sealed structures. High temperatures also accelerate the aging and embrittlement of solid insulation materials such as epoxy resin, reducing insulation performance and increasing the risk of partial discharge. These problems affect the operational stability and service life of the equipment. Therefore, the applicant proposes an improvement plan to address the issues of reduced heat dissipation and insulation performance in transformers under high-temperature environments. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the traditional American transformer design and provide a product that improves service life and operational stability.

[0005] To solve the above problems, the present invention adopts the following technical solution.

[0006] An American-style transformer with protective properties includes a transformer body and a first cover plate fixed thereon. The first cover plate has a rotatable transmission arm, and the transmission arm has a rotatable sunshade located above each outer wall of the transformer body. A damping positioning device is provided between the transmission arm, the first cover plate, and the sunshade to fix the transmission arm or the sunshade in an adjusted position. A second cover plate is provided above the first cover plate, and an active space is provided between the second cover plate and the first cover plate for the sunshade to rotate and adjust. One end of the sunshade has a first extension facing the second cover plate, and the other end has a downwardly curved second extension. The surface of the sunshade is coated with a reflective coating.

[0007] Preferably, the first cover plate is provided with at least two support columns in each direction, and the ends of the support columns are provided with connection holes.

[0008] Preferably, the second cover plate has a sleeve portion fitted onto the outer wall of the support column, and an O-ring is provided between the sleeve portion and the support column. The second cover plate is connected and fixed to the connecting hole by fastening screws, and each position of the second cover plate has an inclined surface near its edge.

[0009] Preferably, the first cover plate is provided with a first rotating support portion, and the sunshade is provided with a second rotating support portion corresponding to the first rotating portion. The first rotating support portion and the second rotating support portion are provided with a first hinge hole.

[0010] Preferably, the transmission arm is provided with a second hinge hole corresponding to the first hinge hole, and the two ends of the second hinge hole are provided with countersunk holes.

[0011] Preferably, the damping positioning device includes a compression spring, a limiting washer, a rotating shaft, an actuating washer, and a nut. The compression spring is disposed in a countersunk hole. The actuating washer is fixed to one end of the compression spring and acts on both ends of the inner wall of the first rotating support or the second rotating support. The second hinge hole and both ends of the actuating washer are provided with through grooves. The rotating shaft passes through the first hinge hole and the second hinge hole. The rotating shaft is provided with a transmission part embedded in the through groove. The limiting washer is sleeved on both ends of the rotating shaft. The nut is threaded to both ends of the rotating shaft and tightly abuts the limiting washer against the outer wall of the first rotating support or the second rotating support.

[0012] Preferably, the sunshade is provided with a handle for tools to operate its rotation.

[0013] Preferably, the reflective coating is an aluminum foil composite coating or a vacuum metal coating.

[0014] Beneficial effects:

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This invention controls the shading range and extension angle by adjusting the angle between the sunshade and the first cover plate, as well as the angle between the sunshade and the outer wall of the transformer body, through the transmission arm. This allows for flexible adjustment of the sunshade's position. The first extension prevents rainwater from splashing into the first cover plate, while the second extension guides the rainwater to drain orderly to the ground. Adjusting the sunshade's angle effectively blocks direct sunlight in summer, reduces transformer oil temperature, slows down the aging of insulation materials, and improves the stability and service life of the equipment. Furthermore, the reflective coating further blocks solar heat radiation. This structural design combines sunshade and rainproof functions, enhancing overall protective performance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an American-style transformer with protective effect according to the present invention;

[0018] Figure 2 This is an exploded structural diagram of an American-style transformer with protective effect according to the present invention.

[0019] Figure 3 This is a cross-sectional structural diagram of an American-style transformer with protective effect according to the present invention.

[0020] Figure 4 This utility model Figure 3 A partial enlarged view A of an American-style transformer with protective features;

[0021] Figure 5 This utility model Figure 3 A partial enlarged view (B) of an American-style transformer with protective features;

[0022] Figure 6 This is an exploded structural diagram of a damping positioning device for an American-style transformer with protective effect according to the present invention.

[0023] The correspondence between the labels and component names in the attached figures is as follows:

[0024] Reference numerals: 1. Transformer body; 2. First cover plate; 3. Transmission arm; 4. Sunshade; 5. Damping positioning device; 6. Second cover plate; 7. First hinge hole; 8. Through slot; 21. Support column; 22. Connecting hole; 23. First rotating support part; 31. Second hinge hole; 32. Countersunk hole; 41. First extension part; 42. Second extension part; 43. Second rotating support part; 44. Handle part; 51. Compression spring; 52. Limiting washer; 53. Rotating shaft; 54. Actuating washer; 55. Nut; 531. Transmission part; 61. Sleeve part; 62. O-ring seal; 63. Fastening screw; 64. Inclined surface. Detailed Implementation

[0025] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In this embodiment of the utility model, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0028] Reference example Figures 1 to 6 An American-style transformer with protective effect includes a transformer body 1 and a first cover plate 2 fixed thereon. The first cover plate 2 is provided with a rotatable transmission arm 3 and a rotatable sunshade 4, which is located above each outer wall of the transformer body 1. A damping positioning device 5 is provided between the transmission arm 3 and the first cover plate 2 and the sunshade 4 to fix the transmission arm 3 or the sunshade 4 in the adjusted position. A second cover plate 6 is provided above the first cover plate 2. An active space for the sunshade 4 to rotate and adjust is provided between the second cover plate 6 and the first cover plate 2. One end of the sunshade 4 is provided with a first extension 41 facing the second cover plate 6, and the other end is provided with a downwardly curved second extension 42. The surface of the sunshade 4 is coated with a reflective coating.

[0029] The angle between the sunshade 4 and the first cover plate 2, as well as the angle between the sunshade 4 and the outer wall of the transformer body 1, are adjusted by the transmission arm 3 to control the shading range and expansion angle, thereby achieving flexible adjustment of the position of the sunshade 4. The first extension 41 prevents rainwater from splashing into the interior of the first cover plate 2, and the second extension 42 guides the rainwater to be discharged to the ground in an orderly manner. Adjusting the angle of the sunshade 4 can effectively block direct sunlight in summer, reduce transformer oil temperature, delay the aging of insulation materials, and improve the stability and service life of equipment operation. In addition, the reflective coating further blocks solar heat radiation. This structural design takes into account both sunshade and rainproof functions, enhancing the overall protective performance.

[0030] It is worth mentioning that at least two support columns 21 are provided in each position of the first cover plate 2, and the end of the support column 21 is provided with a connecting hole 22;

[0031] It is worth mentioning that the second cover plate 6 is provided with a sleeve portion 61 fitted on the outer wall of the support column 21. An O-ring seal 62 is provided between the sleeve portion 61 and the support column 21. The second cover plate 6 is connected and fixed to the connecting hole 22 by fastening screws 63. An inclined surface 64 is provided near its edge in each direction of the second cover plate 6. The sleeve portion 61 and the support column 21 form a radial sealing structure. The O-ring seal 62 increases the radial sealing performance and prevents rainwater from seeping into the first cover plate 2 from the connection between the two. The inclined surface 64 allows rainwater to enter the sunshade 4 under the influence of gravity, avoiding the accumulation of rainwater on the second cover plate 6.

[0032] It is worth mentioning that the first cover plate 2 is provided with a first rotating support part 23, and the sunshade 4 is provided with a second rotating support part 43 corresponding to the first rotating part. The first rotating support part 23 and the second rotating support part 43 are provided with a first hinge hole 7, and the transmission arm 3 rotates around the first hinge hole 7 as the axis.

[0033] It is worth mentioning that the transmission arm 3 is provided with a second hinge hole 31 corresponding to the first hinge hole 7, and countersunk holes 32 are provided at both ends of the second hinge hole 31.

[0034] It is worth mentioning that the damping positioning device 5 includes a compression spring 51, a limiting washer 52, a rotating shaft 53, an actuating washer 54, and a nut 55. The compression spring 51 is disposed in the countersunk hole 32. The actuating washer 54 is fixed to one end of the compression spring 51 and acts on both ends of the inner wall of the first rotating support part 23 or the second rotating support part 43. The second hinge hole 31 and both ends of the actuating washer 54 are provided with through grooves 8. The rotating shaft 53 passes through the first hinge hole 7 and the second hinge hole 31. The rotating shaft 53 is provided with a transmission part 531 embedded in the through groove 8. The limiting washer 52 is sleeved on both ends of the rotating shaft 53. The nut 55 is threadedly connected to both ends of the rotating shaft 53 and tightly abuts the limiting washer 52 against the inner wall of the rotating shaft 53. The transmission arm 3, through the compression spring 51, tightly presses the actuating pad 54 against the inner wall of the first rotating support 23 or the second rotating support 43, thereby increasing the friction between the transmission arm 3 and the actuating pad 54. At the same time, the nut 55 tightly presses the limiting pad 52 against the outer wall of the first rotating support 23 or the second rotating support 43. Under the premise of ensuring that the transmission arm 3 and the sun visor 4 can rotate, the rotating shaft 53 is not allowed to leave the original position. The rotational force is transmitted to the transmission arm 3 through the transmission part 531, and the actuating pad 54 is driven to rotate together, thereby fixing the transmission arm 3 or the sun visor 4 in the adjusted position.

[0035] It is worth mentioning that the sunshade 4 is provided with a handle 44 for tools to operate its rotation. The operator hooks the handle 44 with the tool and applies force to the tool to adjust the angle of the sunshade 4 above each side wall of the transformer body 1, thereby adjusting the sunshade range according to the actual situation and effectively improving the product's flexibility and adjustability.

[0036] It is worth mentioning that the reflective coating is set as an aluminum foil composite coating or a vacuum metal coating. Since this is existing technology, it will not be described in detail here.

[0037] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. A protective American-style transformer, comprising a transformer body (1) and a first cover plate (2) fixed thereon, characterized in that: The first cover plate (2) is provided with a rotatable transmission arm (3), the transmission arm (3) is provided with a rotatable sunshade (4), and is located above each outer wall of the transformer body (1). A damping positioning device (5) is provided between the transmission arm (3) and the first cover plate (2) and the sunshade (4) to fix the transmission arm (3) or the sunshade (4) in the adjusted position. A second cover plate (6) is provided above the first cover plate (2). An active space for the sunshade (4) to rotate and adjust is provided between the second cover plate (6) and the first cover plate (2). One end of the sunshade (4) is provided with a first extension (41) facing the second cover plate (6), and the other end is provided with a second extension (42) that bends downward. The surface of the sunshade (4) is coated with a reflective coating.

2. The American-style transformer with protective effect according to claim 1, characterized in that: The first cover plate (2) is provided with at least two support columns (21) in each direction, and the end of the support column (21) is provided with a connection hole (22).

3. The American-style transformer with protective effect according to claim 2, characterized in that: The second cover plate (6) is provided with a sleeve portion (61) fitted on the outer wall of the support column (21). An O-ring (62) is provided between the sleeve portion (61) and the support column (21). The second cover plate (6) is connected and fixed to the connecting hole (22) by fastening screws (63). Each position of the second cover plate (6) near its edge is provided with an inclined surface (64).

4. The American-style transformer with protective effect according to claim 1, characterized in that: The first cover plate (2) is provided with a first rotating support part (23), and the sunshade (4) is provided with a second rotating support part (43) corresponding to the first rotating part. The first rotating support part (23) and the second rotating support part (43) are provided with a first hinge hole (7).

5. The American-style transformer with protective effect according to claim 4, characterized in that: The transmission arm (3) is provided with a second hinge hole (31) corresponding to the first hinge hole (7), and countersunk holes (32) are provided at both ends of the second hinge hole (31).

6. The American-style transformer with protective effect according to claim 5, characterized in that: The damping positioning device (5) includes a compression spring (51), a limiting washer (52), a rotating shaft (53), an action washer (54), and a nut (55). The compression spring (51) is disposed in the countersunk hole (32). The action washer (54) is fixed to one end of the compression spring (51) and acts on both ends of the inner wall of the first rotating support part (23) or the second rotating support part (43). The second hinge hole (31) and the two ends of the action washer (54) are provided with through grooves (8). The rotating shaft (53) passes through the first hinge hole (7) and the second hinge hole (31). The rotating shaft (53) is provided with a transmission part (531) embedded in the through groove (8). The limiting washer (52) is sleeved on both ends of the rotating shaft (53). The nut (55) is threaded to both ends of the rotating shaft (53) and tightly abuts the limiting washer (52) against the outer wall of the first rotating support part (23) or the second rotating support part (43).

7. The American-style transformer with protective effect according to claim 1, characterized in that: The sunshade (4) is provided with a handle (44) for tools to operate its rotation.

8. The American-style transformer with protective effect according to claim 1, characterized in that: The reflective coating is configured as an aluminum foil composite coating or a vacuum metal coating.

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