Noise reduction type dry-type transformer

Abstract

The utility model discloses a noise reduction type dry-type transformer, and relates to the technical field of dry-type transformers. Comprising a transformer body and a box body, the transformer body is installed in the box body, four corners of the bottom of the transformer body are connected with the box body through a damping mechanism, the damping mechanism comprises a lower installation plate, high-damping rubber and an upper installation plate, the lower installation plate is connected with the box body, the upper installation plate is connected with the transformer body, and the high-damping rubber is installed between the upper installation plate and the lower installation plate. A through hole is formed in the high-damping rubber, the top of the lower mounting plate is fixedly connected with a fixing cylinder extending into an inner cavity of the through hole, the bottom of the lower mounting plate is connected with a connecting rod extending into the fixing cylinder, the bottom of the connecting rod is connected with a pressing block, and a damping spring connected with the bottom of the pressing block is mounted on the inner wall of the bottom of the fixing cylinder. According to the noise reduction type dry-type transformer, the transformer body is installed in the box body, the sound insulation and noise reduction effects can be achieved, the damping mechanism is installed at the bottom of the transformer body, and noise caused by mechanical vibration can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of dry-type transformer technology, specifically a noise-reducing dry-type transformer. Background Technology

[0002] A transformer is a device that uses the principle of electromagnetic induction to change alternating current 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. Dry-type transformers are those whose iron core and windings are not immersed in insulating oil. They are widely used in local lighting, high-rise buildings, airports, docks, CNC machinery, and other applications, and have advantages such as strong short-circuit withstand capability, low maintenance workload, high operating efficiency, small size, and low noise.

[0003] When a dry-type transformer is in operation, the blades inside it will generate air noise and mechanical noise. The core, windings and mechanical support structure of the dry-type transformer may generate mechanical resonance, and this noise will be directly transmitted to the external environment, causing a certain degree of noise pollution. Utility Model Content

[0004] This invention provides a noise-reducing dry-type transformer to solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a noise-reducing dry-type transformer, comprising a transformer body and a housing, wherein the transformer body is installed inside the housing, and the housing is hinged with a door; the four bottom corners of the transformer body are connected to the bottom inner wall of the housing via a shock-absorbing mechanism; the shock-absorbing mechanism includes a lower mounting plate, a high-damping rubber, and an upper mounting plate; the lower mounting plate is connected to the bottom inner wall of the housing, and the upper mounting plate is connected to the bottom of the transformer body; the high-damping rubber is installed between the upper mounting plate and the lower mounting plate, and a through hole is formed on the high-damping rubber; a fixed cylinder extending into the cavity of the through hole is fixedly connected to the top of the lower mounting plate; a connecting rod extending into the fixed cylinder is connected to the bottom of the lower mounting plate; a pressure block is connected to the bottom of the connecting rod; and a shock-absorbing spring connected to the bottom of the pressure block is installed on the bottom inner wall of the fixed cylinder.

[0006] Furthermore, a rubber ring through which the connecting rod passes is installed in the inner cavity of the fixed cylinder above the pressure block.

[0007] Furthermore, the interior of the enclosure is filled with sound-absorbing cotton.

[0008] Furthermore, both sides of the housing are equipped with heat dissipation louvers for ventilation.

[0009] Furthermore, a labyrinthine silencer is installed on the side of the heat dissipation louvers facing the housing.

[0010] Furthermore, a rainproof plate is installed on the top of the box.

[0011] Compared with the prior art, the present invention provides a noise-reducing dry-type transformer with the following beneficial effects: the noise-reducing dry-type transformer can play a certain role in sound insulation and noise reduction by installing the transformer body in the box, and the vibration damping mechanism installed at the bottom of the transformer body can reduce mechanical vibration and reduce the noise caused by mechanical vibration. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the structure for removing the bottom of the cabinet door according to this utility model;

[0014] Figure 3 This is a schematic diagram of the transformer body structure of this utility model;

[0015] Figure 4 This is an enlarged schematic diagram of point A in this utility model;

[0016] Figure 5 This is a schematic diagram of the internal structure of the box body of this utility model.

[0017] In the diagram: 1. Enclosure; 2. Enclosure door; 3. Transformer body; 4. Vibration damping mechanism; 5. Lower mounting plate; 6. High-damping rubber; 7. Upper mounting plate; 8. Through hole; 9. Fixing cylinder; 10. Connecting rod; 11. Pressure block; 12. Vibration damping spring; 13. Rubber ring; 14. Sound-absorbing cotton; 15. Heat dissipation louvers; 16. Rainproof plate. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-5This utility model discloses a noise-reducing dry-type transformer, including a transformer body 3 and a housing 1. The transformer body 3 is installed inside the housing 1. The housing 1 is hinged with a door 2. The four bottom corners of the transformer body 3 are connected to the bottom inner wall of the housing 1 through a shock-absorbing mechanism 4. The shock-absorbing mechanism 4 includes a lower mounting plate 5, a high-damping rubber 6, and an upper mounting plate 7. The lower mounting plate 5 is connected to the bottom inner wall of the housing 1, and the upper mounting plate 7 is connected to the bottom of the transformer body 3. The high-damping rubber 6 is installed between the upper mounting plate 7 and the lower mounting plate 5. The high-damping rubber 6 has a through hole 8. The top of the lower mounting plate 5 is fixedly connected to a fixing cylinder 9 that extends into the cavity of the through hole 8. The bottom of the lower mounting plate 5 is connected to a connecting rod 10 that extends into the fixing cylinder 9. The bottom of the connecting rod 10 is connected to a pressure block 11. The bottom inner wall of the fixing cylinder 9 is equipped with a shock-absorbing spring 12 that is connected to the bottom of the pressure block 11.

[0020] The high-damping rubber 6 is shaped like a frustum.

[0021] The bottom of the transformer body 3 has a mounting bracket, and a mounting plate 7 is mounted on the bottom of the mounting bracket.

[0022] Specifically, the inner cavity of the fixed cylinder 9 is located above the pressure block 11 and a rubber ring 13 through which the connecting rod 10 passes is installed.

[0023] In this embodiment, the transformer body 3 generates mechanical vibration during operation, which causes the high-damping rubber 6 to deform and absorb vibration energy. At the same time, when the transformer body 3 moves up and down, the connecting rod 10 can move downward with the upper mounting plate 7, so that the pressure block 11 squeezes the shock-absorbing spring 12 to play a shock-absorbing and buffering role. The outer wall of the connecting rod 10 can contact the inner wall of the rubber ring 13. The inner wall of the rubber ring 13 can be coated with damping grease. When the connecting rod 10 moves relative to the fixed cylinder 9, it can rub against the rubber ring 13, which plays a role in consuming vibration energy.

[0024] Specifically, the interior of the housing 1 is filled with sound-absorbing cotton 14.

[0025] In this embodiment, the interior of the door 2 is also filled with sound-absorbing cotton 14. Of course, the inner or outer wall of the box 1 can also be equipped with sound insulation board so that the box 1 has the function of sound insulation and noise reduction.

[0026] Specifically, both sides of the housing 1 are equipped with heat dissipation louvers 15 for ventilation.

[0027] A labyrinthine silencer is installed on the side of the heat dissipation louvers 15 facing the housing 1.

[0028] In this implementation scheme, the heat dissipation louvers 15 reduce noise through a labyrinth-type silencer without affecting the ventilation of the housing 1.

[0029] Specifically, a rainproof plate 16 is installed on the top of the box 1.

[0030] In this embodiment, the top two sides of the rainproof plate 16 are inclined.

[0031] In summary, this noise-reducing dry-type transformer can achieve a certain degree of sound insulation and noise reduction by installing the transformer body 3 inside the enclosure 1. Furthermore, the installation of a vibration damping mechanism 4 at the bottom of the transformer body 3 can reduce mechanical vibration and thus mitigate the noise caused by mechanical vibration.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A noise-reducing dry-type transformer, comprising a transformer body (3) and a housing (1), characterized in that: The transformer body (3) is installed inside the enclosure (1). The enclosure (1) is hinged with a door (2). The four bottom corners of the transformer body (3) are connected to the bottom inner wall of the enclosure (1) through a shock-absorbing mechanism (4). The shock-absorbing mechanism (4) includes a lower mounting plate (5), a high-damping rubber (6), and an upper mounting plate (7). The lower mounting plate (5) is connected to the bottom inner wall of the enclosure (1), and the upper mounting plate (7) is connected to the bottom of the transformer body (3). The high-damping rubber (6) is installed inside the enclosure (1). Between the upper mounting plate (7) and the lower mounting plate (5), a through hole (8) is provided on the high damping rubber (6). A fixed cylinder (9) extending into the cavity of the through hole (8) is fixedly connected to the top of the lower mounting plate (5). A connecting rod (10) extending into the fixed cylinder (9) is connected to the bottom of the lower mounting plate (5). A pressure block (11) is connected to the bottom of the connecting rod (10). A shock-absorbing spring (12) connected to the bottom of the pressure block (11) is installed on the bottom inner wall of the fixed cylinder (9).

2. The noise-reducing dry-type transformer according to claim 1, characterized in that: The inner cavity of the fixed cylinder (9) is located above the pressure block (11) and a rubber ring (13) is installed through which the connecting rod (10) passes.

3. The noise-reducing dry-type transformer according to claim 1, characterized in that: The interior of the enclosure (1) is filled with sound-absorbing cotton (14).

4. A noise-reducing dry-type transformer according to claim 1, characterized in that: Both sides of the housing (1) are equipped with heat dissipation louvers (15) for ventilation.

5. A noise-reducing dry-type transformer according to claim 4, characterized in that: A labyrinthine silencer is installed on the side of the heat dissipation louvers (15) facing the housing (1).

6. A noise-reducing dry-type transformer according to claim 1, characterized in that: The top of the box (1) is fitted with a rainproof plate (16).

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