Outdoor dry-type transformer

Abstract

According to the technical scheme, the outdoor dry-type transformer is characterized by comprising a first protection assembly located above an adjusting frame and a second protection assembly located in an inner cavity of the adjusting frame; the first protection assembly comprises a first corrugated pipe arranged outside the threaded column in a sleeving mode and two connecting pieces coaxially located at the two ends of the first corrugated pipe correspondingly, and the two connecting pieces are fixedly connected with the adjusting frame and the base correspondingly. The second protection assembly comprises a second corrugated pipe arranged outside the threaded column in a sleeving mode and a rotating ring located at one end of the second corrugated pipe, the rotating ring is limited in the adjusting frame and can rotate relative to the adjusting frame, and the other end of the second corrugated pipe is fixedly connected with a nut at the end of the threaded column. The threaded column is rotated relative to the adjusting frame, so that the second corrugated pipe correspondingly stretches and retracts while rotating relative to the adjusting frame, the first corrugated pipe correspondingly stretches and retracts, and the problem that the height of the transformer is difficult to adjust due to the fact that the threaded column is prone to rusting in the prior art is solved.

Description

Technical Field

[0001] This utility model relates to the field of transformer technology, and more specifically to an outdoor dry-type transformer. Background Technology

[0002] A dry-type transformer is a type of transformer that does not use insulating oil. Its core and windings are not immersed in insulating oil and are mainly cooled by natural air cooling (AN) or forced air cooling (AF). This type of transformer is widely used in local lighting, high-rise buildings, airports, docks, and CNC machine equipment.

[0003] Currently, Chinese patent CN222260717U discloses an outdoor dry-type transformer. It adds a telescopic frame, an adjusting frame, a threaded column, and a shaft seat between the dry-type transformer body and the base. The threaded column rotates relative to the adjusting frame and the shaft seat, which drives the dry-type transformer body to move up and down relative to the base. The length of the telescopic frame changes accordingly with the height of the dry-type transformer. Although this design solves the problem of different height requirements for dry-type transformers in different installation environments, it still has defects. The threaded column is exposed to the outside environment, and in a humid environment, the rusting speed of the threads on the surface of the threaded column will be accelerated. This will cause the threaded column to be difficult to rotate relative to the adjusting frame, affecting the adjustment of the height of the dry-type transformer. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a dry-type transformer that is suitable for outdoor use, easy to adjust in height, and has a stable threaded column structure.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an outdoor dry-type transformer, comprising a transformer body, a base positioned at the bottom of the transformer body, a base plate located directly below the base, an adjustment frame positioned on the base plate, a threaded post threadedly connected to the adjustment frame, and multiple telescopic frames located near the corners of the base plate and between the base and the base plate. One end of the threaded post is rotatably connected to the base. The transformer also includes a first protective component located above the adjustment frame and a second protective component located within the cavity of the adjustment frame. The first protective component includes a first corrugated pipe sleeved outside the threaded post and two connectors coaxially positioned at both ends of the first corrugated pipe. The two connectors are fixedly connected to the adjustment frame and the base, respectively. The second protective component includes a second corrugated pipe sleeved outside the threaded post and a rotating ring positioned at one end of the second corrugated pipe. The rotating ring is confined within the adjustment frame and can rotate relative to the adjustment frame. The other end of the second corrugated pipe is fixedly connected to a nut at the end of the threaded post. By rotating the threaded post relative to the adjustment frame, the second corrugated pipe rotates relative to the adjustment frame while simultaneously extending and retracting accordingly, as does the first corrugated pipe.

[0006] As a further improvement of this utility model, the adjusting frame includes a threaded plate located between the first corrugated pipe and the second corrugated pipe, and two support plates located at both ends of the threaded plate and connected to the base plate, wherein the width of the two support plates is smaller than the width of the threaded plate.

[0007] As a further improvement of this utility model, the base plate is provided with two low-limiting columns located on both sides of the adjustment frame and both located below the base.

[0008] As a further improvement of this utility model, the base plate is provided with a plurality of height limiting frames that are geometrically distributed and located on the outside of the base. One end of each of the plurality of height limiting frames is bent toward the direction of the transformer body and located above the edge of the base.

[0009] As a further improvement of this utility model, anti-collision plates are provided at both ends of the base along its length.

[0010] The beneficial effects of this utility model are as follows: by rotating the threaded column relative to the adjustment frame, the second bellows rotates relative to the adjustment frame while simultaneously undergoing corresponding expansion and contraction, and the first bellows also undergoes corresponding expansion and contraction. Compared with the prior art, this design can ensure that the threaded column is isolated from the outside world, effectively avoiding the influence of external moisture and other substances on the threaded column. The threaded column structure is stable, which facilitates the rotation of the threaded column relative to the adjustment frame, resulting in high and stable adjustment efficiency of the height of the transformer body. Attached Figure Description

[0011] Figure 1 This is a perspective view of the present utility model;

[0012] Figure 2 This is a perspective view of the present invention after the transformer body has been removed;

[0013] Figure 3 This is an assembly drawing of the threaded column, adjusting bracket, first protective component, and second protective component in this utility model;

[0014] Figure 4 for Figure 3 Exploded view;

[0015] Figure 5 for Figure 3 Main sectional view.

[0016] Reference numerals in the attached drawings: 1. Transformer body; 2. Base; 3. Base plate; 31. Low-limit post; 32. High-limit frame; 33. Anti-collision plate; 4. Adjustment frame; 41. Threaded plate; 42. Support plate; 5. Threaded post; 6. Telescopic frame; 7. First protective component; 71. First corrugated pipe; 72. Connector; 8. Second protective component; 81. Second corrugated pipe; 82. Rotating ring. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Identical components are indicated by the same reference numerals.

[0018] Reference Figures 1 to 5 As shown, an outdoor dry-type transformer of this embodiment includes a transformer body 1, a base 2 positioned at the bottom of the transformer body 1, a base plate 3 located directly below the base 2, an adjustment frame 4 positioned on the base plate 3, a threaded post 5 threadedly connected to the adjustment frame 4, and a plurality of telescopic frames 6 located near the corners of the base plate 3 and between the base 2 and the base plate 3. One end of the threaded post 5 is rotatably connected to the base 2.

[0019] Based on the aforementioned prior art, it also includes a first protective component 7 and a second protective component 8. The first protective component 7 includes a first corrugated pipe 71 and two connectors 72. The inner diameter of the first corrugated pipe 71 is larger than the outer diameter of the threaded column 5. The two ends of the first corrugated pipe 71 are coaxially welded to the two connectors 72. The two connectors 72 are hollow in the middle and can allow the threaded column 6 to pass through. Lugs are machined on both sides of the two connectors 72 and through holes are opened on the lugs. Threaded holes corresponding to the through holes are machined on the base 2 and the adjusting frame 4. The second protective component 8 includes a second corrugated pipe 81 and a rotating ring 82. The inner diameter of the second corrugated pipe 81 and the inner diameter of the rotating ring 82 are both larger than the diameter of the threaded column 5. One end of the second corrugated pipe 81 is coaxially welded to the rotating ring 82. An annular groove is machined on the adjusting frame 4 to accommodate the rotating ring 82 and allow the threaded column 5 to pass through. The annular groove is countersunk and its large end is connected to the inner cavity of the adjusting frame 4.

[0020] During assembly, an annular limiting cap is fitted over the second bellows 81, and the un-nutted end of the threaded post 5 is passed through the second bellows 81 and the rotating ring 82. Then, one end of the second bellows 81 is coaxially welded to the nut of the threaded post 5. Next, the threaded post 5 is screwed over the adjusting bracket 4 so that the rotating ring 82 can be inserted into the small end of the annular groove. The annular limiting cap is then fixed in the large end of the annular groove using bolts. The rotating ring 82 is thus confined within the adjusting bracket 4. Finally, the first bellows 71 is fitted over the portion of the threaded post 5 that extends beyond the adjusting bracket 4. One of the connectors 72 is positioned on the adjusting frame 4 by bolts. Finally, the assembled adjusting frame 4 is installed on the base plate 3. The end of the threaded column 5 is inserted into the base 2 by rotating the nut of the threaded column 5 and the rotation connection is completed. The other connector 72 is lifted and fixed to the bottom of the base 2 by bolts. No sealing is made between the connector 72 and the adjusting frame 4, between the connector 72 and the base 2, and between the rotating ring 82 and the adjusting frame 4 so as to allow the air inside the first bellows 71 and the second bellows 81 to flow with the outside.

[0021] When the nut of the threaded column 5 is rotated by an external force, the second bellows 81 and the rotating ring 82 rotate with the threaded column 5. The length of the second bellows 81 will change. The threaded column 5 drives the base 2 to move in the vertical direction relative to the base plate 3. The connector 72 connected to the base 2 moves with the base 2, and the length of the first bellows 71 changes accordingly.

[0022] Compared with existing technologies, this design can ensure that the threaded column 5 is isolated from the outside world, effectively avoiding the influence of external moisture and other substances on the threaded column 5. The threaded column 5 has a stable structure, which facilitates the rotation of the threaded column 5 relative to the adjustment frame 4. The adjustment efficiency of the height of the transformer body 1 is high and stable.

[0023] To further explain, if the nut gear of the threaded column 5 is compatible with the assembly of the rotating ring 82, the rotating ring 82 can be confined within the nut of the threaded column 5 and the other end of the second bellows 81 can be welded to the adjusting bracket 4. Then, when the threaded column 5 rotates, both the second bellows 81 and the rotating ring 82 will rotate relative to the threaded column 5.

[0024] As an improved implementation, since the adjusting bracket 4 needs to be equipped with the connecting piece 72 and the rotating ring 82, the size requirement of the adjusting bracket 4 is correspondingly increased. This will cause the angle range of the wrench driving the threaded column 5 to rotate to be reduced, thereby increasing the number of times the wrench is disassembled and assembled relative to the threaded column 5, and reducing the adjustment efficiency. To solve the aforementioned problems, refer to Figures 1 to 4 As shown, the adjustment frame 4 includes a threaded plate 41 located between the first bellows 71 and the second bellows 81, and two support plates 42 located at both ends of the threaded plate 41 and connected to the base plate 3. Without affecting the structural strength required for the overall adjustment frame 4, the two sides of the two support plates 42 are cut off so that the width of the two support plates 42 is smaller than the width of the threaded plate 41. This design can increase the angle at which the wrench drives the threaded column 5 to rotate, thereby reducing the number of times the wrench is disassembled and assembled relative to the threaded column 5, and effectively improving the height adjustment efficiency of the transformer body 1.

[0025] As an improved implementation, during the process of lowering the transformer body 1, there is a situation where the second bellows 81 is straightened while the base 2 can continue to be lowered. This can cause the second bellows 81 to be easily damaged by pulling. To solve the aforementioned problem, refer to... Figure 1 and Figure 2 As shown, two low-limiting posts 31 are provided on the base plate 3, located on both sides of the adjusting frame 4 and below the base 2. When the base 2 touches the low-limiting post 31, the base 2 cannot move further downward and the threaded post 5 cannot rotate further. This design can provide a reasonable minimum height for the transformer body 1, effectively avoid the phenomenon that the second corrugated tube 81 is easily pulled and damaged, and indirectly extend the service life of the second corrugated tube 81.

[0026] As an improved implementation, during the process of raising the transformer body 1, there is a situation where the first bellows 71 is straightened while the base 2 continues to move upwards. This can cause the first bellows 71 to be easily damaged by pulling. To solve the aforementioned problem, refer to... Figure 1 and Figure 2 As shown, multiple height-limiting frames 32 are geometrically distributed on the base plate 3 and located outside the base 2. One end of each height-limiting frame 32 is bent towards the transformer body 1 and located above the edge of the base 2. When the base 2 touches the height-limiting frame 32, the base 2 cannot move upward and the threaded column 5 cannot rotate. This design can provide a reasonable maximum height for the transformer body 1, effectively avoid the phenomenon that the first corrugated pipe 71 is easily damaged by pulling, and indirectly extend the service life of the first corrugated pipe 71.

[0027] As one specific implementation method of the improvement, refer to Figure 1 As shown, anti-collision plates 33 are provided at both ends of the base 2 along its length, which provides protection against accidental collisions.

[0028] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. An outdoor dry-type transformer, comprising a transformer body (1), a base (2) positioned at the bottom of the transformer body (1), a base plate (3) located directly below the base (2), an adjustment frame (4) positioned on the base plate (3), a threaded post (5) threadedly connected to the adjustment frame (4), and a plurality of telescopic frames (6) located near the corners of the base plate (3) and between the base (2) and the base plate (3), wherein one end of the threaded post (5) is rotatably connected to the base (2), characterized in that: It also includes a first protective assembly (7) located above the adjusting frame (4) and a second protective assembly (8) located inside the adjusting frame (4). The first protective assembly (7) includes a first bellows (71) sleeved on the threaded post (5) and two connectors (72) coaxially positioned at both ends of the first bellows (71). The two connectors (72) are fixedly connected to the adjusting frame (4) and the base (2) respectively. The second protective assembly (8) includes a first protective assembly (71) sleeved on the threaded post (5). The second bellows (81) is located outside the second bellows (81) and a rotating ring (82) is positioned at one end of the second bellows (81). The rotating ring (82) is confined within the adjusting frame (4) and can rotate relative to the adjusting frame (4). The other end of the second bellows (81) is fixedly connected to the nut at the end of the threaded column (5). By rotating the threaded column (5) relative to the adjusting frame (4), the second bellows (81) rotates relative to the adjusting frame (4) while simultaneously extending and retracting accordingly, and the first bellows (71) also extends and retracts accordingly.

2. The dry-type transformer for outdoor use according to claim 1, characterized in that: The adjustment frame (4) includes a threaded plate (41) located between the first corrugated pipe (71) and the second corrugated pipe (81) and two support plates (42) located at both ends of the threaded plate (41) and connected to the base plate (3). The width of the two support plates (42) is smaller than the width of the threaded plate (41).

3. The outdoor dry-type transformer according to claim 1 or 2, characterized in that: The base plate (3) is provided with two low-limiting columns (31) located on both sides of the adjustment frame (4) and both located below the base (2).

4. The outdoor dry-type transformer according to claim 1 or 2, characterized in that: The base plate (3) is provided with a plurality of height limiting frames (32) arranged in a geometric distribution and located outside the base (2). One end of each of the height limiting frames (32) is bent toward the transformer body (1) and located above the edge of the base (2).

5. The outdoor dry-type transformer according to claim 1 or 2, characterized in that: Both ends of the base (2) in the length direction are provided with anti-collision plates (33).

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