Low-noise dry-type power transformer

By introducing a servo motor-driven toothed belt and toothed plate system into the dry-type power transformer, the automatic replacement of the noise reduction plate is realized, which solves the problem of inconvenient replacement in the existing technology, and through the design of the heat dissipation mechanism, the equipment's efficiency is improved Heat dissipation effect.

CN222380410UActive Publication Date: 2025-01-21JINAN JINRIFUXING ELECTRIC GRP CO LTD
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Patent Information

Application Number
CN202420511377.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-03-17
Publication Date
2025-01-21
Estimated Expiration
2034-03-17

AI Technical Summary

Technical Problem

The existing dry power transformers will generate noise during operation, and the internal noise-proof board is inconvenient to replace, which will affect the use effect.

Method used

A low-noise dry-type power transformer is designed, which uses a servo motor to drive a toothed belt and a toothed plate. Through the cooperation of the toothed belt and the toothed plate, the automatic replacement of the noise reduction plate is realized, simplifying the replacement process.

Benefits of technology

It realizes the convenient replacement of the noise reduction board, reduces the difficulty of maintenance, and improves the efficiency of the equipment. Through the design of the heat dissipation mechanism, the temperature inside the equipment is ensured to be constant and the heat dissipation effect is enhanced.

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Abstract

The utility model provides a low-noise dry-type power transformer, and relates to the field of power transformers. The low-noise dry-type power transformer comprises a protective shell, a damping base is fixedly connected to the inner bottom wall of the protective shell, a transformer body is fixedly connected to the top of the damping base, heat dissipation mechanisms are connected to the front end of the top of the protective shell and the rear end of the bottom of the protective shell in a penetrating mode, and guide rails are fixedly connected to the upper end and the lower end of the inner wall of the protective shell; the left side of the front end of the guide rail is fixedly connected with a fixing plate. When the low-noise dry-type power transformer is used, a servo motor drives a toothed belt to rotate, the toothed belt drives a power shaft to rotate, the power shaft drives a power wheel to rotate, the power wheel drives a connecting wheel to rotate, the connecting wheel drives a driving wheel to rotate, the driving wheel drives a contact wheel to rotate, the contact wheel drives a toothed plate to move, and the toothed plate drives a noise reduction plate to move out of a guide rail. When the noise reduction plate is installed, only the toothed plate needs to be inserted into the guide rail, the contact wheel drives the noise reduction plate to reset through the toothed plate, and replacement is convenient.
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Description

Technical Field

[0001] The utility model relates to the technical field of power transformers, in particular to a low-noise dry-type power transformer. Background Art

[0002] A dry-type transformer refers to a transformer that is dry as a whole and relies on air for heat dissipation. A dry-type power transformer is a dry-type transformer with high electrical strength, mechanical strength, and heat resistance. It is an excellent product for urban power grid transformation and is particularly suitable for important places such as high-rise buildings and power stations that require fire prevention, explosion prevention, and moisture prevention. When a dry-type power transformer is working, the current causes the transformer itself to vibrate, and this vibration will cause resonance in its own components and surrounding fixed objects.

[0003] Existing dry-type power transformers will generate relative noise during operation, and the noise is mostly treated by isolating the noise through an anti-noise board. However, the anti-noise board inside the dry-type transformer needs to be replaced after long-term use, and the internal structure makes it inconvenient to replace it, which affects the use effect. Utility Model Content

[0004] Technical issues solved

[0005] In view of the deficiencies in the prior art, the utility model provides a low-noise dry-type power transformer, which solves the problems mentioned in the above background technology.

[0006] Technical Solution

[0007] To achieve the above purpose, the utility model is implemented through the following technical solutions: a low-noise dry-type power transformer, including a protective shell, the inner bottom wall of the protective shell is fixedly connected to a shock-absorbing base, the top of the shock-absorbing base is fixedly connected to a transformer body, the front end of the top of the protective shell and the rear end of the bottom of the protective shell are both connected through a heat dissipation mechanism, the upper and lower ends of the inner wall of the protective shell are fixedly connected to guide rails, the left side of the front end of the guide rail is fixedly connected to a fixed plate, the inside of the guide rail is slidably connected to a toothed plate, a noise reduction plate is fixedly connected between the toothed plates, and the upper and lower sides of the left end side wall of the protective shell are rotatably connected to The power shaft, the left end of the power shaft is meshed with a toothed belt, a servo motor is meshed inside the toothed belt, the outer surface of the power shaft is located inside the protective shell and is slidably connected to a power wheel, the end of the power wheel close to the fixed plate is meshed with a connecting wheel, the end of the connecting wheel away from the power wheel is fixedly connected to the driving wheel, the left end of the driving wheel is meshed with a contact wheel, the contact wheel and the driving wheel are rotatably connected through a moving frame, the left end of the power wheel is rotatably connected to the side wall of the moving frame, a return spring is fixedly connected to the left side of one end of the moving frame close to the fixed plate, and the right end of the fixed plate is located inside the front end of the moving frame and is fixedly connected to a guide plate.

[0008] Preferably, the left and right sides of the rear end of the protective shell are both arranged in an arc shape, the heat dissipation mechanism at the top of the protective shell is arranged in an air outlet state, and the heat dissipation mechanism at the bottom of the protective shell is arranged in an air intake state.

[0009] Preferably, the rear end of the guide rail is consistent with the shape of the inner wall of the protective shell, the left and right ends of the tooth plate are set at an inclined angle, and the left and right ends of the noise reduction plate are provided with plastic support plates.

[0010] Preferably, a groove engaging with the left side of the noise reduction plate is provided at the front end of the fixing plate, the left end of the power shaft engages with the toothed belt by setting a gear, and the servo motor is connected to the left end side wall of the protective shell.

[0011] Preferably, a movable groove engaging with the power wheel is provided at the bottom of the protective shell, and the connecting wheel and the power wheel are arranged at a right angle.

[0012] Preferably, the movable frame is arranged in an "L" shape, the contact wheel and the driving wheel are connected to the movable frame through a rotating rod, the side wall of the movable frame is rotatably connected to the power wheel by setting a bracket, the left end of the return spring is fixedly connected to the fixed plate, and the movable frame and the guide plate are slidably connected. Beneficial Effects

[0013] The utility model provides a low-noise dry-type power transformer, which has the following beneficial effects:

[0014] When the low-noise dry-type power transformer is in use, the servo motor drives the toothed belt to rotate, the toothed belt drives the power shaft to rotate, the power shaft drives the power wheel to rotate, the power wheel drives the connecting wheel to rotate, the connecting wheel drives the driving wheel to rotate, the driving wheel drives the contact wheel to rotate, the contact wheel drives the toothed plate to move, the toothed plate drives the noise reduction plate to move out of the guide rail, and when installing the noise reduction plate, it only needs to insert the toothed plate into the guide rail, and the contact wheel drives the noise reduction plate to reset through the toothed plate, which solves the problem that the internal structure of the existing dry-type transformer makes it inconvenient to replace the anti-noise plate, which affects the use effect, and has the advantage of easy replacement.

[0015] When the low-noise dry-type power transformer is in use, the heat dissipation mechanisms at the bottom and top of the protective shell allow air to circulate inside the protective shell, thereby achieving a constant temperature inside the protective shell, and the shock-absorbing base reduces vibration on the transformer body, which has the advantage of facilitating heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the positive triaxial measurement of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the servo motor structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the structural guide plate of the utility model;

[0019] Figure 4 This is a schematic diagram of the contact wheel structure of the utility model;

[0020] Figure 5 It is a schematic diagram of the tooth plate structure of the utility model.

[0021] Among them, 1 protective shell, 2 shock-absorbing base, 3 transformer body, 4 heat dissipation mechanism, 5 guide rail, 6 fixing plate, 7 tooth plate, 8 noise reduction plate, 9 power shaft, 10 tooth belt, 11 servo motor, 12 power wheel, 13 connecting wheel, 14 driving wheel, 15 contact wheel, 16 moving frame, 17 return spring, 18 guide plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The utility model embodiment provides a low-noise dry-type power transformer, such as Figure 1-5As shown, it includes a protective shell 1, the left and right sides of the rear end of the protective shell 1 are arranged in an arc shape, the inner bottom wall of the protective shell 1 is fixedly connected to a shock-absorbing base 2, the top of the shock-absorbing base 2 is fixedly connected to a transformer body 3, the heat dissipation mechanism at the bottom and top of the protective shell 1 circulates air inside the protective shell 1, thereby achieving a constant temperature inside the protective shell 1, the shock-absorbing base 2 damps the transformer body 3, the front end of the top of the protective shell 1 and the rear end of the bottom of the protective shell 1 are both through-connected with a heat dissipation mechanism 4, the heat dissipation mechanism 4 at the top of the protective shell 1 is set to an air outlet state, and the heat dissipation mechanism 4 at the bottom of the protective shell 1 is set to an air intake state, the upper and lower ends of the inner wall of the protective shell 1 are fixedly connected to guide rails 5, the rear end of the guide rail 5 is consistent with the shape of the inner wall of the protective shell 1, and the left side of the front end of the guide rail 5 is fixed A fixed plate 6 is fixedly connected, a tooth plate 7 is slidably connected inside the guide rail 5, a noise reduction plate 8 is fixedly connected between the tooth plates 7, the left and right ends of the tooth plate 7 are set at an inclined angle, and plastic support plates are set at the left and right ends of the noise reduction plate 8. A groove that meshes with the left side of the noise reduction plate 8 is provided at the front end of the fixed plate 6. The setting of the groove facilitates pulling the noise reduction plate 8. The upper and lower sides of the left side wall of the protective shell 1 are rotatably connected with a power shaft 9, and the left end of the power shaft 9 is meshed with a toothed belt 10. A servo motor 11 is meshed inside the toothed belt 10. The left end of the power shaft 9 is meshed with the toothed belt 10 by setting a gear, and the servo motor 11 is connected to the left side wall of the protective shell 1. The outer surface of the power shaft 9 is located inside the protective shell 1 and is slidably connected to a power wheel 12, and the power wheel 12 is meshed near one end of the fixed plate 6. There is a connecting wheel 13, and a moving groove meshing with the power wheel 12 is opened at the bottom of the protective shell 1. The connecting wheel 13 and the power wheel 12 are arranged at a right angle. The end of the connecting wheel 13 away from the power wheel 12 is fixedly connected to the driving wheel 14, and the left end of the driving wheel 14 is meshed with a contact wheel 15. When the noise reduction plate 8 needs to be replaced, the servo motor 11 drives the toothed belt 10 to rotate, the toothed belt 10 drives the power shaft 9 to rotate, the power shaft 9 drives the power wheel 12 to rotate, the power wheel 12 drives the connecting wheel 13 to rotate, the connecting wheel 13 drives the driving wheel 14 to rotate, the driving wheel 14 drives the contact wheel 15 to rotate, the contact wheel 15 drives the toothed plate 7 to move, and the toothed plate 7 drives the noise reduction plate 8 to move out of the guide rail 5. When the noise reduction plate 8 is installed, only the toothed plate 7 needs to be inserted into the guide rail 5, and the contact wheel 15 is passed through The toothed plate 7 drives the noise reduction plate 8 to reset, and the contact wheel 15 and the driving wheel 14 are rotatably connected through the mobile frame 16. The left end of the power wheel 12 is rotatably connected to the side wall of the mobile frame 16. The mobile frame 16 is arranged in an "L" shape. The contact wheel 15 and the driving wheel 14 are connected to the mobile frame 16 through a rotating rod. The side wall of the mobile frame 16 is rotatably connected to the power wheel 12 by setting a bracket. The mobile frame 16 is fixedly connected to a reset spring 17 on the left side near one end of the fixed plate 6. The left end of the reset spring 17 is fixedly connected to the fixed plate 6. The setting of the reset spring 17 facilitates the engagement of the contact wheel 15 with the toothed plate 7. The right end of the fixed plate 6 is located inside the front end of the mobile frame 16 and is fixedly connected to a guide plate 18. The mobile frame 16 and the guide plate 18 are slidably connected.

[0024] Working principle:

[0025] When the low-noise dry-type power transformer is in use, the heat dissipation mechanisms at the bottom and top of the protective shell 1 allow air to circulate inside the protective shell 1, thereby achieving a constant temperature inside the protective shell 1, and the shock-absorbing base 2 reduces shock on the transformer body 3. When the noise reduction plate 8 needs to be replaced, the servo motor 11 drives the toothed belt 10 to rotate, the toothed belt 10 drives the power shaft 9 to rotate, the power shaft 9 drives the power wheel 12 to rotate, the power wheel 12 drives the connecting wheel 13 to rotate, the connecting wheel 13 drives the driving wheel 14 to rotate, the driving wheel 14 drives the contact wheel 15 to rotate, the contact wheel 15 drives the toothed plate 7 to move, the toothed plate 7 drives the noise reduction plate 8 to move out of the guide rail 5, and when the noise reduction plate 8 is installed, it is only necessary to insert the toothed plate 7 into the guide rail 5, and the contact wheel 15 drives the noise reduction plate 8 to reset through the toothed plate 7.

[0026] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-noise dry-type power transformer, comprising a protective shell (1), characterized in that: The inner bottom wall of the protective shell (1) is fixedly connected to a shock absorbing base (2), the top of the shock absorbing base (2) is fixedly connected to a transformer body (3), the front end of the top of the protective shell (1) and the rear end of the bottom of the protective shell (1) are both connected through a heat dissipation mechanism (4), the upper and lower ends of the inner wall of the protective shell (1) are both fixedly connected to guide rails (5), the left side of the front end of the guide rail (5) is fixedly connected to a fixed plate (6), the inside of the guide rail (5) is slidably connected to a toothed plate (7), a noise reduction plate (8) is fixedly connected between the toothed plates (7), the upper and lower sides of the left end side wall of the protective shell (1) are rotatably connected to a power shaft (9), the left end of the power shaft (9) is meshed through a toothed belt (10), a servo motor (11) is meshed inside the toothed belt (10), and the power shaft The outer surface of (9) is located inside the protective shell (1) and is slidably connected to a power wheel (12). The end of the power wheel (12) close to the fixed plate (6) is meshed with a connecting wheel (13). The end of the connecting wheel (13) away from the power wheel (12) is fixedly connected to a driving wheel (14). The left end of the driving wheel (14) is meshed with a contact wheel (15). The contact wheel (15) and the driving wheel (14) are rotatably connected through a movable frame (16). The left end of the power wheel (12) is rotatably connected to the side wall of the movable frame (16). The left end of the movable frame (16) close to the fixed plate (6) is fixedly connected to a return spring (17). The right end of the fixed plate (6) is located inside the front end of the movable frame (16) and is fixedly connected to a guide plate (18).

2. A low-noise dry-type power transformer according to claim 1, characterized in that: The left and right sides of the rear end of the protective shell (1) are both arranged in an arc shape, the heat dissipation mechanism (4) at the top of the protective shell (1) is arranged in an air outlet state, and the heat dissipation mechanism (4) at the bottom of the protective shell (1) is arranged in an air intake state.

3. A low-noise dry-type power transformer according to claim 1, characterized in that: The rear end of the guide rail (5) is consistent in shape with the inner wall of the protective shell (1), the left and right ends of the tooth plate (7) are arranged at an inclined angle, and the left and right ends of the noise reduction plate (8) are arranged with plastic support plates.

4. A low-noise dry-type power transformer according to claim 1, characterized in that: The front end of the fixing plate (6) is provided with a groove that meshes with the left side of the noise reduction plate (8); the left end of the power shaft (9) meshes with the toothed belt (10) through the provision of a gear; and the servo motor (11) is connected to the left end side wall of the protective shell (1).

5. A low-noise dry-type power transformer according to claim 1, characterized in that: The bottom of the protective shell (1) is provided with a movable groove that meshes with the power wheel (12), and the connecting wheel (13) and the power wheel (12) are arranged at right angles.

6. A low-noise dry-type power transformer according to claim 1, characterized in that: The movable frame (16) is arranged in an "L" shape, the contact wheel (15) and the driving wheel (14) are connected to the movable frame (16) via a rotating rod, the side wall of the movable frame (16) is rotatably connected to the power wheel (12) by providing a bracket, the left end of the return spring (17) is fixedly connected to the fixed plate (6), and the movable frame (16) is slidably connected to the guide plate (18).