Dry-type transformer capable of preventing coil from loosening

Abstract

The dry-type transformer capable of preventing the coil from loosening comprises a transformer body, an upper mounting frame is fixedly mounted at the top of the transformer body, a lower mounting frame is fixedly mounted at the bottom of the transformer body, and meanwhile a first coil anti-loosening assembly is mounted on one side of the upper mounting frame and one side of the lower mounting frame; and the iron core is fixedly installed on the upper side of the transformer body, the outer side of the iron core is evenly wrapped with the coil body, meanwhile, the upper end of the coil body is covered with the upper locking plate in a pressing mode, and the lower end of the coil body is covered with the lower locking plate in a pressing mode. The upper side and the lower side of the coil body are locked through the first coil anti-loosening assembly and the second coil anti-loosening assembly.

Description

Technical Field

[0001] The utility model relates to the field of transformers, in particular to a dry-type transformer for preventing coil loosening. Background Technique

[0002] A dry-type transformer is a transformer that is not immersed in insulating oil and is only composed of an iron core and windings. It works based on the law of electromagnetic induction and mainly consists of a primary coil and a secondary coil. When an alternating current passes through the primary coil, an alternating magnetic field will be generated. The secondary coil surrounds the primary coil. When the current in the primary coil changes, an induced electromotive force will also be generated in the secondary coil, thereby generating a voltage in the secondary coil.

[0003] During the actual use of a dry-type transformer, if a short circuit occurs in the transformer, the strong electromagnetic force generated will act on the coil, causing the coil to be subjected to a huge mechanical stress, making it easy for the coil to loosen. Content of the Utility Model

[0004] The purpose of the utility model is to provide a dry-type transformer for preventing coil loosening to solve the defects mentioned in the above background technique.

[0005] To achieve the above purpose, a dry-type transformer for preventing coil loosening is provided, including a transformer body. An upper mounting frame is fixedly installed at the top of the transformer body, and a lower mounting frame is fixedly installed at the bottom of the transformer body. At the same time, a first coil anti-loosening component is installed on one side of the upper mounting frame and the lower mounting frame, and a second coil anti-loosening component is installed on the other side of the upper mounting frame and the lower mounting frame. An iron core is fixedly installed on the upper side of the transformer body, and the outside of the iron core is evenly wrapped with a coil body. At the same time, an upper locking plate is pressed on the upper end of the coil body, and a lower locking plate is pressed on the lower end of the coil body.

[0006] Preferably, the first coil anti-loosening component and the second coil anti-loosening component are symmetrical structures with respect to the coil body, and the composition structures of the first coil anti-loosening component and the second coil anti-loosening component are the same.

[0007] Preferably, the second coil anti-loosening component includes a stud inserted through the upper locking plate and the lower locking plate. The top of the stud passes through the upper mounting frame and is screwed and fixed with an upper nut. At the same time, the bottom of the stud passes through the lower mounting frame and is screwed and fixed with an upper nut.

[0008] Preferably, the upper locking plate and the lower locking plate have the same structure and size. The upper locking plate is a rectangular structure made of plastic material. At the same time, an arc-shaped pressing groove adapted to the size of the coil body is opened on the front surface of the upper locking plate.

[0009] Preferably, two groups of openings adapted to the size of the stud are opened on the upper locking plate and the lower locking plate, and the stud is inserted into the interior of the two groups of openings.

[0010] Preferably, the end of the upper locking plate is pressed and fixed on the top surface of the coil body and fixed by two lower nuts screwed thereon; the end of the lower locking plate is pressed and fixed on the bottom surface of the coil body and fixed by two lower nuts screwed thereon.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: the upper side and the lower side of the coil body are locked by the first coil anti-loosening component and the second coil anti-loosening component. Specifically, the end of the upper locking plate is clamped on the upper end of the coil body to press the upper end of the coil body; the end of the lower locking plate is clamped on the lower end of the coil body to press the lower end of the coil body; by reducing the distance between the upper locking plate and the lower locking plate, the coil body can be pressed to prevent loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a front view schematic diagram of the structure of the present utility model;

[0013] Figure 2 is the structure of the present utility model Figure 1 side view;

[0014] Figure 3 is the structure of the present utility model Figure 1 bottom view;

[0015] Figure 4 is a schematic diagram of the structure of the upper mounting frame of the present utility model.

[0016] Reference numerals in the figure: 1, transformer body; 2, coil body; 3, upper mounting frame; 4, lower mounting frame; 5, iron core; 6, first coil anti-loosening component; 7, second coil anti-loosening component; 71, upper nut; 72, lower nut; 73, upper locking plate; 74, stud; 75, lower locking plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Please refer to Figures 1-4 , the present utility model provides a dry-type transformer for preventing coil loosening, including a transformer body 1, an upper mounting frame 3 is fixedly installed at the top of the transformer body 1, and a lower mounting frame 4 is fixedly installed at the bottom of the transformer body 1. At the same time, a first coil anti-loosening component 6 is installed on one side of the upper mounting frame 3 and the lower mounting frame 4, and a second coil anti-loosening component 7 is installed on the other side of the upper mounting frame 3 and the lower mounting frame 4. An iron core 5 is fixedly installed on the upper side of the transformer body 1, and the coil body 2 is uniformly wrapped outside the iron core 5. At the same time, the upper locking plate 73 is pressed on the upper end of the coil body 2, and the lower locking plate 75 is pressed on the lower end of the coil body 2.

[0018] Working principle: When in use, the upper side and the lower side of the coil body 2 are locked by the first coil anti-loosening component 6 and the second coil anti-loosening component 7. Specifically, the end of the upper locking plate 73 is clamped at the upper end of the coil body 2 to compress the upper end of the coil body 2.

[0019] The end of the lower locking plate 75 is clamped at the lower end of the coil body 2 to compress the lower end of the coil body 2.

[0020] By reducing the distance between the upper locking plate 73 and the lower locking plate 75, the coil body 2 can be compressed to prevent loosening.

[0021] As a preferred embodiment, the first coil anti-loosening component 6 and the second coil anti-loosening component 7 are symmetric structures with respect to the coil body 2, and the first coil anti-loosening component 6 and the second coil anti-loosening component 7 have the same composition structure.

[0022] The second coil anti-loosening component 7 includes a stud 74 inserted through the upper locking plate 73 and the lower locking plate 75. The top of the stud 74 passes through the upper mounting bracket 3 and is screwed and fixed to the upper nut 71. At the same time, the bottom of the stud 74 passes through the lower mounting bracket 4 and is screwed and fixed to the upper nut 71.

[0023] The settings of the upper locking plate 73 and the lower locking plate 75 can respectively clamp and fix the upper and lower sides of the coil body 2. By reducing the distance between the upper locking plate 73 and the lower locking plate 75, the coil body 2 is clamped to prevent loosening and detachment.

[0024] As a preferred embodiment, the upper locking plate 73 and the lower locking plate 75 have the same structure and size. The upper locking plate 73 is a rectangular structure made of plastic material. At the same time, an arc-shaped pressing groove adapted to the size of the coil body 2 is provided on the front surface of the upper locking plate 73.

[0025] Two groups of openings adapted to the size of the stud 74 are provided on the upper locking plate 73 and the lower locking plate 75, and the stud 74 is inserted into the interior of the two groups of openings.

[0026] The bottoms of the upper locking plate 73 and the lower locking plate 75 are clamped on the end surface of the coil body 2. The upper locking plate 73 and the lower locking plate 75 are locked by the lower nuts 72 on the two studs 74 to ensure the stability of the upper locking plate 73 and the lower locking plate 75 during operation.

[0027] As a preferred embodiment, the end of the upper locking plate 73 is pressed and fixed on the top surface of the coil body 2 and fixed by two groups of lower nuts 72 screwed thereon; the end of the lower locking plate 75 is pressed and fixed on the bottom surface of the coil body 2 and fixed by two groups of lower nuts 72 screwed thereon.

Claims

1. A dry-type transformer for preventing coil loosening, comprising a transformer body (1), characterized in that: An upper mounting frame (3) is fixedly mounted on the top of the transformer body (1), and a lower mounting frame (4) is fixedly mounted on the bottom of the transformer body (1); a first coil anti-loosening assembly (6) is mounted on one side of the upper mounting frame (3) and the lower mounting frame (4), and a second coil anti-loosening assembly (7) is mounted on the other side of the upper mounting frame (3) and the lower mounting frame (4); an iron core (5) is fixedly mounted on the upper side of the transformer body (1), and the outer side of the iron core (5) evenly wraps the coil body (2); an upper end portion of the coil body (2) is pressed against an upper locking plate (73), and a lower end portion of the coil body (2) is pressed against a lower locking plate (75).

2. A dry-type transformer for preventing coil loosening according to claim 1, characterized in that: The first coil anti-loosening component (6) and the second coil anti-loosening component (7) are symmetrical structures with respect to the coil body (2), and the first coil anti-loosening component (6) and the second coil anti-loosening component (7) have the same composition structure.

3. The dry-type transformer for preventing coil loosening according to claim 1, characterized in that: The second coil anti-loosening assembly (7) comprises a stud (74) inserted into the upper locking plate (73) and the lower locking plate (75), and the top of the stud (74) passes through the upper mounting frame (3) and is screwed and fixed to the upper nut (71), while the bottom of the stud (74) passes through the lower mounting frame (4) and is screwed and fixed to the upper nut (71).

4. The dry-type transformer for preventing coil loosening according to claim 1, characterized in that: The upper locking plate (73) and the lower locking plate (75) have the same structure and size. The upper locking plate (73) is a rectangular structure made of plastic material. At the same time, an arc-shaped pressing groove matching the size of the coil body (2) is provided on the front side of the upper locking plate (73).

5. The dry-type transformer for preventing coil loosening according to claim 1, characterized in that: The upper locking plate (73) and the lower locking plate (75) are provided with two groups of openings that are matched with the size of the studs (74), and the studs (74) are inserted into the interiors of the two groups of openings.

6. A dry-type transformer for preventing coil loosening according to claim 5, characterized in that: The end of the upper locking plate (73) is pressed onto the top surface of the coil body (2) and is fixed by two sets of lower nuts (72) screwed thereon; the end of the lower locking plate (75) is pressed onto the bottom surface of the coil body (2) and is fixed by two sets of lower nuts (72) screwed thereon.

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