Noise-reduction dry-type transformer

Abstract

The utility model relates to a noise reduction dry-type transformer, which comprises a base, a pressure bearing plate, a supporting plate and a winding group, four damping type shock-absorbing seats are uniformly distributed on the upper surface of the base, the pressure bearing plate is fixed above the four damping type shock-absorbing seats, an enclosure frame with a rectangular section is fixed on the upper surface of the pressure bearing plate, a pair of supporting plates is fixed on the inner wall of the enclosure frame, and the winding group is fixed on the inner wall of the enclosure frame. The four winding groups are uniformly distributed and fixed on the supporting plate, the supporting plate is fixed on the two supporting plates, and the positions of the winding groups correspond to the positions of the damping type shock absorption seats one by one. According to the utility model, the four damping type shock-absorbing seats are uniformly distributed between the base and the bearing plate, and the positions of the four damping type shock-absorbing seats are in one-to-one correspondence with the positions of the four winding groups, so that the vibration generated by the winding groups can be effectively inhibited directly during operation; vibration energy generated by the winding due to electromagnetic force, structural problems and the like is accurately absorbed and dissipated, vibration transmission and amplification are reduced, and therefore the overall vibration amplitude of the transformer is effectively reduced, and the damping and noise reduction effects are good.

Description

Technical Field

[0001] The utility model relates to the technical field of dry-type transformer installation, and specifically relates to a noise-reducing dry-type transformer. Background Technique

[0002] A dry-type transformer is a common power equipment. Different from an oil-immersed transformer, its iron core and winding are not immersed in an insulating liquid, but use air or other gases as a cooling medium, and solid insulating materials such as epoxy resin for insulation. It has a compact structure and a small volume, and has the advantages of good fire resistance, simple maintenance, good moisture-proof performance, small partial discharge, high reliability, and can operate in harsh environments. It is widely used in places with high requirements for safety and fire prevention, such as urban power grids, high-rise buildings, subways, hospitals, shopping malls, factories, etc., providing a stable and reliable guarantee for the transmission and distribution of electric power.

[0003] When a dry-type transformer is operating, it will generate a certain amount of noise. If no noise reduction treatment is carried out, these noises may pollute the surrounding environment. A dry-type transformer is usually equipped with a shock-absorbing base. The structure of the traditional shock-absorbing base is often relatively simple, and it only uses a simple rubber pad or spring to cooperate with the support frame for shock absorption. The shock absorption and noise reduction effect is not ideal.

[0004] At the same time, the structural layout is compact, and there is no extra space to install a cooling fan. As a result, the cooling fan can only be installed on the frame of the dry-type transformer. Installing a cooling fan on the frame will occupy a certain space, which may affect the installation and layout of other equipment or components. For a substation or a power distribution room with limited space, this may bring difficulties to the overall equipment layout. Content of the Utility Model

[0005] The purpose of the utility model is to provide a noise-reducing dry-type transformer, which effectively solves the problems put forward in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions.

[0007] A noise-reducing dry-type transformer includes a base, a bearing plate, a supporting plate and a winding group. Four damping shock-absorbing seats are evenly distributed on the upper surface of the base. A bearing plate is fixedly arranged above the four damping shock-absorbing seats. A rectangular frame is fixedly arranged on the upper surface of the bearing plate. A pair of supporting plates are fixedly arranged on the inner wall of the frame. The four winding groups are evenly distributed and fixed on the supporting plate. The supporting plate is fixed on the two supporting plates, and the positions of the winding groups correspond to those of the damping shock-absorbing seats one by one.

[0008] It can be seen that by evenly distributing four damping shock mounts between the base and the bearing plate, and the positions of the four damping shock mounts corresponding one by one to the four winding groups, during operation, the vibration generated by the winding groups can be effectively suppressed directly, accurately absorbing and dissipating the vibration energy generated by the winding groups due to electromagnetic force, structural problems, etc., reducing the transmission and amplification of vibration, thereby effectively reducing the overall vibration amplitude of the transformer and achieving good shock absorption and noise reduction effects.

[0009] Furthermore, the surrounding frame is welded by four plate bodies, and sound-absorbing cotton layers are compounded on the inner surfaces of the four plate bodies of the surrounding frame.

[0010] Furthermore, an air inlet cylinder body is fixedly installed through the middle of the bearing plate, a fan is installed inside the air inlet cylinder body, the air inlet cylinder body is located between the two bearing plates, the flow guiding direction of the fan is from bottom to top, and a flow guiding groove is provided on the supporting plate, and the flow guiding groove is used to guide the air flow generated by the fan to the gap of the winding groups.

[0011] Furthermore, the four winding groups are arranged symmetrically in pairs, the flow guiding groove is in a cross shape and is adapted to the shape of the gap between the four winding groups.

[0012] Furthermore, an intercepting net is installed below the fan inside the air inlet cylinder body.

[0013] Furthermore, mounting feet are respectively fixed on both sides of the base, and mounting holes are provided on the mounting feet.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows.

[0015] The present utility model evenly distributes four damping shock mounts between the base and the bearing plate, and the positions of the four damping shock mounts correspond one by one to the four winding groups. During operation, the vibration generated by the winding groups can be effectively suppressed directly, accurately absorbing and dissipating the vibration energy generated by the winding groups due to electromagnetic force, structural problems, etc., reducing the transmission and amplification of vibration, thereby effectively reducing the overall vibration amplitude of the transformer and achieving good shock absorption and noise reduction effects.

[0016] By the operation of the fan, the present utility model sucks external air into the air inlet cylinder body and blows it upward. Part of the air flow flows into the gap of the winding groups through the flow guiding groove, which can effectively dissipate heat from each winding group. At the same time, the remaining air flow respectively flows upward through the gaps between the four sides of the supporting plate and the surrounding frame, forming an upward flowing air wall outside the four winding groups, which can dissipate heat from the periphery of the winding groups, ensuring a wide heat dissipation coverage area and improving the heat dissipation effect.

[0017] In this utility model, the bearing plate is fixed on the tops of four damping shock mounts. By using the damping shock mounts to form a support between the base and the bearing plate, space is made for the installation of the air inlet cylinder and the fan. The shock-absorbing components are cleverly used to support the transformer body, and an integrated space is constructed on the base for installing heat dissipation and shock-absorbing and noise-reducing components. This not only solves the problem of the compact layout of the traditional base but also realizes functional integration, optimizing the overall performance and space utilization efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional schematic diagram of the overall structure of this utility model;

[0019] Figure 2 is a schematic diagram of the gap deformation adaptation between the diversion groove and the winding group in this utility model;

[0020] Figure 3 is a schematic cross-sectional view of the partial structure of this utility model;

[0021] Figure 4 is a schematic diagram of the partial structure above the base in this utility model.

[0022] In the figures: 1, base; 11, mounting feet; 12, mounting holes; 2, damping shock mounts; 3, bearing plate; 4, enclosure; 5, support plate; 6, support plate; 61, diversion groove; 7, winding group; 8, air inlet cylinder; 81, intercepting net; 9, fan. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of this utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, rather than all of the embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this utility model.

[0024] In the description of the embodiments of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "connection" and "installation" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, "communication" can be a direct communication or an indirect communication through an intermediate medium. Among them, "fixing" means that they are connected to each other and the relative positional relationship after connection remains unchanged. The directional terms mentioned in the embodiments of the present utility model, such as "inside", "outside", "top", "bottom", etc., are only with reference to the direction of the attached drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present utility model, 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 embodiments of the present utility model.

[0025] In the embodiments of the present utility model, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0026] Please refer to Figures 1-4 , a noise-reducing dry-type transformer provided by the present utility model includes a base 1, a bearing plate 3, a support plate 6, and a winding group 7. Four damping shock mounts 2 are evenly distributed on the upper surface of the base 1. A bearing plate 3 is fixedly arranged above the four damping shock mounts 2. A rectangular frame 4 is fixedly arranged on the upper surface of the bearing plate 3. A pair of support plates 5 are fixedly arranged on the inner wall of the frame 4. The four winding groups 7 are evenly and fixedly arranged on the support plate 6. The support plate 6 is fixedly arranged on the two support plates 5. The positions of the winding groups 7 correspond to those of the damping shock mounts 2 one by one. It should be noted that the working principle of the damping shock mount 2 in this application is basically the same as that of the damping shock absorber in the prior art, and the specific structure and principle will not be disclosed in detail. In addition, the present utility model only aims to elaborate on the innovative part. Therefore, the overall structure diagram has been simplified. Secondly, the remaining components of the dry-type transformer are the same as those in the prior art and are not disclosed in this application.

[0027] When installing this noise-reducing dry-type transformer, first, fix the base 1 at the required installation position. Then, fix the winding group 7 on the support plate 6 as required. Then, install the support plate 6 on the support plates 5 inside the frame 4. That's it.

[0028] By evenly distributing four damping shock mounts 2 between the base 1 and the bearing plate 3, and making the four damping shock mounts 2 correspond to the positions of the four winding groups 7 one by one, during operation, it can effectively suppress the vibration generated by the winding groups 7, accurately absorb and dissipate the vibration energy generated by the winding groups 7 due to electromagnetic force, structural problems, etc., reduce the transmission and amplification of vibration, thereby effectively reducing the overall vibration amplitude of the transformer, and having a good shock absorption and noise reduction effect.

[0029] Specifically, the surrounding frame 4 is welded by four plate bodies, and there are gaps between the four plate bodies and the side surface of the support plate 6. Sound-absorbing cotton layers are compounded on the inner side surfaces of the four plate bodies of the surrounding frame 4. By setting the sound-absorbing cotton layers, the noise reduction effect is further improved.

[0030] Specifically, an air inlet cylinder body 8 is fixedly installed through the middle of the bearing plate 3. A fan 9 is installed inside the air inlet cylinder body 8. The air inlet cylinder body 8 is located between the two support plates 5. The diversion direction of the fan 9 is from bottom to top. A diversion groove 61 is provided on the support plate 6, and the diversion groove 61 is used to divert the air flow generated by the fan 9 to the gap of the winding group 7.

[0031] By the operation of the fan 9, external air is sucked into the air inlet cylinder body 8 and blown upward. Part of the air flow flows into the gap of the winding group 7 through the diversion groove 61, which can effectively dissipate heat from each winding group 7. At the same time, the remaining air flows upward through the gaps between the four sides of the support plate 6 and the surrounding frame 4, forming an upward flowing air wall outside the four winding groups 7, which can dissipate heat from the periphery of the winding group 7, ensuring a wide heat dissipation coverage area and improving the heat dissipation effect.

[0032] In addition, the bearing plate 3 is fixed on the tops of the four damping shock mounts 2, and the damping shock mounts 2 are used to form a support between the base 1 and the bearing plate 3, making room for the installation of the air inlet cylinder body 8 and the fan 9. The shock-absorbing components are skillfully used to support the transformer body, creating an integrated space in the base for installing heat dissipation and shock absorption and noise reduction components, which not only solves the problem of the compact layout of the traditional base, but also realizes function integration, optimizing the overall performance and space utilization efficiency of the equipment.

[0033] Specifically, the four winding groups 7 are arranged symmetrically in pairs, and the diversion groove 61 is in a cross shape and is adapted to the shape of the gap between the four winding groups 7. Through the cross-shaped layout of the diversion groove 61, it can be adapted to the shape of the gap between the winding groups 7, thereby further ensuring the coverage area of the heat dissipation air flow.

[0034] Specifically, an intercepting net 81 is installed below the fan 9 inside the air inlet cylinder body 8, and the intercepting net 81 can intercept dust, impurities and other objects.

[0035] Specifically, mounting feet 11 are respectively fixed on both sides of the base 1. The mounting feet 11 are provided with mounting holes 12. Bolts are inserted into the mounting holes 12 and tightened into the pre-embedded threaded sleeves to fix the mounting feet 11, and thus the base 1 can be mounted at a predetermined position.

[0036] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A noise reduction dry-type transformer, comprising a support plate (6) and a winding group (7), characterized in that: It also includes a base (1) and a pressure plate (3); Four damping shock-absorbing seats (2) are evenly distributed on the upper surface of the base (1), and the pressure-bearing plate (3) is fixed above the four damping shock-absorbing seats (2); A frame (4) with a rectangular cross section is fixed on the upper surface of the pressure plate (3), and a pair of support plates (5) are fixed on the inner wall of the frame (4); The four winding groups (7) are evenly distributed and fixed on the support plate (6), and the support plate (6) is fixed on the two support plates (5); The positions of the winding group (7) and the damping shock-absorbing seat (2) correspond one to one.

2. A noise reduction dry-type transformer according to claim 1, characterized in that: The surrounding frame (4) is formed by welding four plate bodies, and the inner surfaces of the four plate bodies of the surrounding frame (4) are all compounded with a sound-absorbing cotton layer.

3. The noise reduction dry-type transformer according to claim 1, characterized in that: An air inlet cylinder (8) is fixedly passed through the middle of the pressure plate (3), and a fan (9) is installed in the air inlet cylinder (8); The air inlet cylinder (8) is located between the two support plates (5); The air flow direction of the fan (9) is from bottom to top; The support plate (6) is provided with a guide groove (61), and the guide groove (61) is used to guide the airflow generated by the fan (9) to the gap of the winding group (7).

4. A noise reduction dry-type transformer according to claim 3, characterized in that: The four winding groups (7) are arranged symmetrically in pairs; The guide groove (61) is in a cross shape and is adapted to the shape of the gaps between the four winding groups (7).

5. A noise reduction dry-type transformer according to claim 4, characterized in that: An interception net (81) is installed in the air inlet cylinder (8) below the fan (9).

6. The noise reduction dry-type transformer according to claim 1, characterized in that: Mounting feet (11) are respectively fixed on both sides of the base (1), and the mounting feet (11) are provided with mounting holes (12).

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