Low-noise power transformer

Abstract

The utility model discloses a low-noise power transformer in the technical field of transformers, which comprises a transformer body, first radiating fins are fixedly mounted at the front end and the rear end of the transformer body, second radiating fins are fixedly mounted at the left end and the right end of the transformer body, and noise reduction mechanisms are arranged on the outer sides of the first radiating fins and the second radiating fins. The low-noise power transformer is additionally provided with the noise reduction mechanism, the noise reduction mechanism adopts a structure for blocking and reducing noise, the intensity of the noise can be reduced in the noise transmission process, and the situation that sound waves are transmitted to a residential building by a transformer body at a high position is effectively avoided by means of the phenomenon that the sound waves are refracted downwards when making contact with low temperature; under the condition that normal heat dissipation of the transformer body is guaranteed, the noise reduction mechanism blocks and reduces electromagnetic force and mechanical vibration noise generated by the interior of the transformer body, the intensity of the noise can be effectively reduced, and the noise is prevented from affecting daily life of residents.

Description

Technical Field

[0001] The utility model relates to the technical field of transformers, and particularly relates to a low-noise power transformer. Background Technique

[0002] A power transformer is a key static electrical device, mainly used to realize the conversion of voltage and current in the power system. Specifically, a power transformer can convert an alternating voltage (or current) of a certain value into another or several alternating voltages (or currents) with the same frequency but different values. The basic working principle of a transformer is based on electromagnetic induction, which is achieved by winding two or more coils (windings) on the same iron core. The energy conversion between these windings is not directly through circuit connection, but through an alternating magnetic field; in the power system, the main functions of a transformer include boosting and reducing voltage. A step-up transformer is used to increase the voltage for efficient long-distance transmission and reduce line losses, while a step-down transformer reduces the high voltage to a voltage level suitable for users. The use of power transformers can not only reduce the energy loss on the transmission line, but also reduce the cross-sectional area of the transmission line and save metal materials.

[0003] The patent document with the application number CN202022888480.3 discloses an oil-immersed power transformer, which includes a transformer core body, an oil tank and an oil storage cylinder. A filter element is coaxially arranged in the oil storage cylinder. The filter element divides the oil storage cylinder into an outer cavity and an inner cavity. The outer cavity is communicated with the bottom of the oil tank through an oil pipe, and an oil pump is installed in the oil pipe between the outer cavity and the oil tank. The inner cavity is communicated with the upper part of the oil tank through an oil pipe. By arranging a filter element in the oil storage cylinder of the oil tank to filter the transformer oil, the service life of the transformer oil is improved. Based on the retrieval of the above patent and the combination with the power transformers in the existing technology, it is found that the transformer will generate noise during operation, and this noise is caused by the electromagnetic force and mechanical vibration inside the transformer. There are a large number of power transformers installed at the negative pole of residential buildings, and the noise generated by these power transformers will seriously affect the daily life experience of residents. Content of the Utility Model

[0004] The purpose of the utility model is to provide a low-noise power transformer to solve the problems raised in the above background technique.

[0005] To achieve the above object, the present utility model provides the following technical solutions: A low-noise power transformer, including a transformer body, both the front and rear ends of the transformer body are fixedly installed with first heat dissipation fins, both the left and right ends of the transformer body are fixedly installed with second heat dissipation fins, and a noise reduction mechanism is arranged outside the first heat dissipation fins and the second heat dissipation fins. The noise reduction mechanism includes a first noise reduction chamber, a first sound insulation board, a group partition board, a first mounting seat, a first barrier ring, and a second barrier ring. First noise reduction chambers are fixedly installed on the outer walls of the front and rear ends of the transformer body. A first sound insulation board and a group partition board are fixedly installed on the inner wall of the first noise reduction chamber. A first mounting seat is arranged between every two group partition boards. A first barrier ring and a second barrier ring are fixedly installed on the inner wall of the first mounting seat. Multiple groups of the first mounting seats, the first barrier ring, and the second barrier ring are distributed from left to right inside the first noise reduction chamber.

[0006] Optionally, the noise reduction mechanism further includes third heat dissipation fins, a first notch, a second noise reduction chamber, fourth heat dissipation fins, a second sound insulation board, a second mounting seat, a third barrier ring, a fourth barrier ring, and a second notch. The lower end of the first noise reduction chamber is fixedly installed with third heat dissipation fins. Multiple third heat dissipation fins are distributed from left to right on the first noise reduction chamber.

[0007] Optionally, a first notch is opened at the upper end of the first noise reduction chamber. Second noise reduction chambers are fixedly installed on the outer walls of the left and right ends of the transformer body.

[0008] Optionally, the lower end of the second noise reduction chamber is fixedly installed with fourth heat dissipation fins. Multiple fourth heat dissipation fins are distributed from front to back on the second noise reduction chamber. A second sound insulation board is fixedly installed on the inner wall of the second noise reduction chamber.

[0009] Optionally, a second mounting seat is fixedly installed at the upper end inside the second noise reduction chamber. A third barrier ring and a fourth barrier ring are fixedly installed on the inner wall of the second mounting seat.

[0010] Optionally, a second notch is arranged outside the third barrier ring and the fourth barrier ring. The second notch is opened on the outer wall of the second noise reduction chamber. Multiple groups of the second mounting seats, the third barrier ring, and the fourth barrier ring are fixedly installed inside the second noise reduction chamber.

[0011] Compared with the prior art, the beneficial effects of the present utility model are:

[0012] In this utility model, a noise reduction mechanism is provided. The noise reduction mechanism effectively blocks and reduces the noise generated by the transformer body during operation. The setting of the first sound insulation board and the second sound insulation board can provide a physical barrier on the noise propagation path, reflecting and absorbing the noise, thereby reducing the noise transmitted to the outside. In the first noise reduction chamber and the second noise reduction chamber, the noise is repeatedly reflected between multiple barrier rings and continuously attenuated, effectively reducing the noise intensity. The noise reduction mechanism not only considers the sound insulation effect but also the heat dissipation requirements of the transformer. The heat dissipation fins (the first heat dissipation fin, the third heat dissipation fin, and the fourth heat dissipation fin) cooperate with the large space of the noise reduction chamber, improving the heat dissipation efficiency and ensuring the thermal balance during the operation of the transformer. In addition, by setting the first sound insulation board, the second sound insulation board, and the barrier rings (the first barrier ring, the second barrier ring, the third barrier ring, and the fourth barrier ring), the noise reduction mechanism cleverly utilizes the refraction phenomenon of sound waves in the high-temperature to low-temperature environment, further reducing the transmission of noise to sensitive areas such as residential buildings, reducing the impact of transformer noise on the lives of surrounding residents, and improving the quality of life of residents, especially for those transformers installed near residential buildings or in noise-sensitive areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the front view of the three-dimensional form of this utility model;

[0014] Figure 2 is a schematic structural diagram of the front view of the plane of this utility model;

[0015] Figure 3 is a schematic structural diagram of the top view of the three-dimensional form of this utility model;

[0016] Figure 4 is a schematic structural diagram of the top view of the plane of this utility model;

[0017] Figure 5 is a schematic structural diagram of the sectional view of the three-dimensional form of this utility model Figure 1 ;

[0018] Figure 6 is a schematic structural diagram of the sectional view of the three-dimensional form of this utility model Figure 2 ;

[0019] Figure 7 is a schematic structural diagram of the sectional view of the three-dimensional form of this utility model Figure 3 ;

[0020] Figure 8 is a schematic structural diagram of the sectional view of the three-dimensional form of this utility model Figure 4 ;

[0021] Figure 9 is of this utility model Figure 5 is a schematic enlarged structural diagram of the three-dimensional form at location A in this utility model.

[0022] In the figure: 1. Transformer body; 2. First heat dissipation fin; 3. Second heat dissipation fin; 4. Noise reduction mechanism; 401. First noise reduction chamber; 402. Third heat dissipation fin; 403. First sound insulation board; 404. Group partition board; 405. First mounting seat; 406. First barrier ring; 407. Second barrier ring; 408. First notch; 409. Second noise reduction chamber; 410. Fourth heat dissipation fin; 411. Second sound insulation board; 412. Second mounting seat; 413. Third barrier ring; 414. Fourth barrier ring; 415. Second notch. Detailed implementation mode

[0023] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0024] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific situations.

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0026] Please refer to Figures 1 to 9, in the embodiment of the present utility model, a low-noise power transformer includes a transformer body 1. First heat dissipation fins 2 are fixedly installed at both the front and rear ends of the transformer body 1, and second heat dissipation fins 3 are fixedly installed at both the left and right ends of the transformer body 1. A noise reduction mechanism 4 is arranged outside the first heat dissipation fins 2 and the second heat dissipation fins 3. The noise reduction mechanism 4 includes a first noise reduction chamber 401, a first sound insulation board 403, a group partition board 404, a first mounting seat 405, a first barrier ring 406 and a second barrier ring 407. First noise reduction chambers 401 are fixedly installed on the outer walls at both the front and rear ends of the transformer body 1. A first sound insulation board 403 and a group partition board 404 are fixedly installed on the inner wall of the first noise reduction chamber 401. A first mounting seat 405 is arranged between every two group partition boards 404. A first barrier ring 406 and a second barrier ring 407 are fixedly installed on the inner wall of the first mounting seat 405. Multiple groups of first mounting seats 405, first barrier rings 406 and second barrier rings 407 are distributed from left to right inside the first noise reduction chamber 401. The noise reduction mechanism 4 further includes third heat dissipation fins 402, a first notch 408, a second noise reduction chamber 409, fourth heat dissipation fins 410, a second sound insulation board 411, a second mounting seat 412, a third barrier ring 413, a fourth barrier ring 414 and a second notch 415. Third heat dissipation fins 402 are fixedly installed at the lower end of the first noise reduction chamber 401. Multiple third heat dissipation fins 402 are distributed from left to right on the first noise reduction chamber 401. A first notch 408 is opened at the upper end of the first noise reduction chamber 401. Second noise reduction chambers 409 are fixedly installed on the outer walls at both the left and right ends of the transformer body 1. Fourth heat dissipation fins 410 are fixedly installed at the lower end of the second noise reduction chamber 409. Multiple fourth heat dissipation fins 410 are distributed from front to back on the second noise reduction chamber 409. A second sound insulation board 411 is fixedly installed on the inner wall of the second noise reduction chamber 409. A second mounting seat 412 is fixedly installed at the upper end inside the second noise reduction chamber 409. A third barrier ring 413 and a fourth barrier ring 414 are fixedly installed on the inner wall of the second mounting seat 412. A second notch 415 is arranged outside the third barrier ring 413 and the fourth barrier ring 414. The second notch 415 is opened on the outer wall of the second noise reduction chamber 409. Multiple groups of second mounting seats 412, third barrier rings 413 and fourth barrier rings 414 are fixedly installed inside the second noise reduction chamber 409;

[0027] The first noise reduction chamber 401 and the second noise reduction chamber 409 provide additional sound insulation space, enabling the noise to be reflected and absorbed multiple times during propagation. This helps utilize the principle of sound wave refraction, and through multiple reflections of the internal structure, the noise gradually weakens during propagation; the third heat dissipation fin 402 and the fourth heat dissipation fin 410 ensure the heat dissipation capacity of the transformer, especially inside the noise reduction mechanism 4, which helps maintain the operating temperature of the transformer; the first sound insulation board 403 and the second sound insulation board 411, as the main sound insulation components, can effectively reflect and absorb noise, preventing the noise from spreading to the outside, especially to the residential building below; the group partition board 404 plays a role of separating and supporting inside the noise reduction chamber, helping to maintain the structural stability of the noise reduction chamber and providing additional sound insulation effect; the first barrier ring 406, the second barrier ring 407, the third barrier ring 413, and the fourth barrier ring 414 limit the noise propagation path while ensuring the air circulation inside the noise reduction chamber, causing the noise to be repeatedly reflected between the rings, further reducing the noise intensity; the first notch 408 and the second notch 415 provide air circulation channels inside the noise reduction mechanism 4, which helps with heat dissipation and prevents the internal pressure from rising due to enclosure.

[0028] The working principle of the present utility model is as follows: This low-noise power transformer is additionally provided with a noise reduction mechanism 4. This noise reduction mechanism 4 is installed around the transformer body 1 and wraps the transformer body 1 inside. The large space and heat dissipation fins inside the noise reduction chamber cooperate with each other to ensure the normal heat dissipation effect of the transformer body 1. When the transformer body 1 is working, the electromagnetic force and mechanical vibration inside it generate noise. The noise sound wave is in a high-temperature state inside the transformer body 1. When the noise sound wave is transmitted to the air and contacts the low temperature, it will change the propagation direction downward. At this time, the first sound insulation board 403 and the second sound insulation board 411 located below will play the role of blocking the noise, effectively preventing the transformer body 1 at a high place from conducting the noise sound wave to the residential building. The blocked noise will repeatedly change the propagation direction inside the first noise reduction chamber 401 and the second noise reduction chamber 409, reducing the noise to the greatest extent. In addition, the first barrier ring 406, the second barrier ring 407, the third barrier ring 413, and the fourth barrier ring 414 can effectively block the noise propagation while ensuring the ventilation of the first noise reduction chamber 401 and the second noise reduction chamber 409. When the noise is conducted into the barrier ring, it will continuously reciprocate between the two barrier rings, and then the intensity will be reduced; in summary, the noise reduction mechanism 4 adopts a structure that blocks and slows down the noise, which can reduce the intensity of the noise during the propagation process of the noise, and by virtue of the phenomenon that the sound wave will refract downward when it contacts the low temperature, effectively avoids the situation that the transformer body 1 at a high place conducts the sound wave to the residential building. The noise reduction mechanism 4 can block and reduce the electromagnetic force and mechanical vibration noise generated inside the transformer body 1 while ensuring the normal heat dissipation of the transformer body 1, effectively reducing the intensity of the noise and avoiding the noise from affecting the daily life of residents.

[0029] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A low-noise power transformer, comprising a transformer body (1), wherein first heat dissipation fins (2) are fixedly mounted on both the front and rear ends of the transformer body (1), and second heat dissipation fins (3) are fixedly mounted on both the left and right ends of the transformer body (1), characterized in that: A noise reduction mechanism (4) is arranged on the outer sides of the first heat dissipation fin (2) and the second heat dissipation fin (3), and the noise reduction mechanism (4) comprises a first noise reduction chamber (401), a first sound insulation board (403), a group baffle (404), a first mounting seat (405), a first blocking ring (406) and a second blocking ring (407). The first noise reduction chamber (401) is fixedly mounted on the outer walls of the front and rear ends of the transformer body (1). A first sound insulation board (403) and a group of partitions (404) are fixedly mounted on the inner wall, a first mounting seat (405) is arranged between every two groups of partitions (404), a first blocking ring (406) and a second blocking ring (407) are fixedly mounted on the inner wall of the first mounting seat (405), and a plurality of groups of the first mounting seats (405), the first blocking rings (406) and the second blocking rings (407) are distributed from left to right inside the first noise reduction chamber (401).

2. A low noise power transformer according to claim 1, characterized in that: The noise reduction mechanism (4) further comprises a third heat sink fin (402), a first notch (408), a second noise reduction chamber (409), a fourth heat sink fin (410), a second sound insulation board (411), a second mounting seat (412), a third barrier ring (413), a fourth barrier ring (414) and a second notch (415); a third heat sink fin (402) is fixedly mounted at the lower end of the first noise reduction chamber (401); and a plurality of the third heat sink fins (402) are distributed on the first noise reduction chamber (401) from left to right.

3. A low noise power transformer according to claim 1, characterized in that: A first notch (408) is provided at the upper end of the first noise reduction chamber (401), and second noise reduction chambers (409) are fixedly mounted on the outer walls of the left and right ends of the transformer body (1).

4. A low-noise power transformer according to claim 3, characterized in that: A fourth heat dissipation fin (410) is fixedly mounted on the lower end of the second noise reduction chamber (409); a plurality of the fourth heat dissipation fins (410) are distributed on the second noise reduction chamber (409) from front to back; and a second sound insulation board (411) is fixedly mounted on the inner wall of the second noise reduction chamber (409).

5. A low noise power transformer according to claim 3, characterized in that: A second mounting seat (412) is fixedly mounted on the upper end of the interior of the second noise reduction chamber (409), and a third blocking ring (413) and a fourth blocking ring (414) are fixedly mounted on the inner wall of the second mounting seat (412).

6. A low noise power transformer according to claim 5, characterized in that: A second notch (415) is provided on the outer side of the third barrier ring (413) and the fourth barrier ring (414); the second notch (415) is opened on the outer wall of the second noise reduction chamber (409); and a plurality of groups of the second mounting seats (412), the third barrier ring (413) and the fourth barrier ring (414) are fixedly installed inside the second noise reduction chamber (409).

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