Noise reduction structure of dry-type transformer

Abstract

This utility model relates to the field of noise reduction for dry-type transformers, and discloses a noise reduction structure for a dry-type transformer, including a housing, an elastic damper installed on the inner wall of the housing, a protective door on the front side of the housing, a transformer body installed at the top of the elastic damper, protective shells on both the left and right sides of the housing, ventilation slots formed on the inner wall of the housing near the protective shells, and a sound insulation component installed on the inner wall of the housing, the sound insulation component including a sound-absorbing panel, the outer side of which is fixedly connected to the inner side of the housing and the rear side of the protective door. In this utility model, through the combined use of the housing, protective shells, and sound insulation component, noise reduction of the housing can be better achieved when the dry-type transformer is operating, thereby improving the noise reduction effect of the device. Simultaneously, the sound insulation panel can be quickly replaced, ensuring rapid maintenance or replacement when needed to maintain optimal sound insulation, further enhancing the flexibility and maintainability of the equipment.

Description

Technical Field

[0001] This utility model relates to the field of noise reduction for dry-type transformers, and more particularly to a noise reduction structure for dry-type transformers. Background Technology

[0002] Dry-type transformers, also known as dry-type power transformers, are transformers whose cores and windings are not immersed in insulating oil. They play an irreplaceable role in the power supply and stable operation of electrical equipment in modern society.

[0003] A search revealed Chinese Patent Publication No. CN219958721U, which discloses a noise reduction structure for dry-type transformers. This utility model includes a protective cover, inside which a dry-type transformer body is housed. A base box is fixedly mounted on the lower outer surface of the protective cover, and a mounting frame is fixedly mounted on the lower outer surface of the dry-type transformer body. A buffer and shock-absorbing component is provided between the mounting frame and the base box. A protective door is provided on the front outer surface of the protective cover, and flame-retardant calcium silicate perforated sound-absorbing panels are fixedly mounted on the inner walls of both the protective cover and the protective door. An old air exhaust port is opened on the upper part of the right outer surface of the protective cover, and an external fresh air inlet is opened on the lower part of the left outer surface of the protective cover. A first protective shell is provided on one side of the old air exhaust port, and a second protective shell is sequentially arranged on the external fresh air inlet. This noise reduction structure for dry-type transformers has advantages such as good buffer and shock absorption, as well as good sound insulation and heat dissipation.

[0004] While the above-mentioned technologies achieve good heat dissipation, the lack of sound insulation structures at the air inlet and outlet of the device results in a certain degree of noise generation during operation of the dry-type transformer. Therefore, a noise reduction structure for dry-type transformers is proposed to solve the above problem. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a noise reduction structure for dry-type transformers, aiming to improve the problem in the prior art that "the noise reduction effect of dry-type transformers is reduced because the air inlet and outlet of the device are not equipped with sound insulation structures".

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a noise reduction structure for a dry-type transformer, comprising a housing, an elastic damper provided on the inner wall of the housing, a protective door provided on the front side of the housing, a transformer body provided at the top of the elastic damper, protective shells provided on both the left and right sides of the housing, a ventilation slot provided on the inner wall of the housing near the protective shell, a sound insulation component provided on the inner wall of the housing, the sound insulation component comprising a sound-absorbing panel, the outer side of the sound-absorbing panel being fixedly connected to the inner side of the housing and the rear side of the protective door, a sound insulation panel provided on the inner wall of the protective shell near the housing, and a locking block slidably connected to the inner wall of the front side of the protective shell.

[0007] As a further description of the above technical solution:

[0008] The right side of the card block is elastically connected to the protective shell by a compression spring. The right side of the sound insulation plate is provided with a card slot near the card block, and the left side of the card block slides on the inner wall of the card slot.

[0009] As a further description of the above technical solution:

[0010] The sound insulation panel has a through groove on its right side, and multiple sets of through grooves are provided. The inner walls of the through grooves are staggered with partitions, and a protective plate is fixedly connected to the right side of the protective shell.

[0011] As a further description of the above technical solution:

[0012] The rear left side of the card block is set as an inclined surface.

[0013] As a further description of the above technical solution:

[0014] The inner wall of the protective shell is provided with a limiting component, which includes a filter plate. The filter plate is inserted into the inner wall of the protective shell on its outer side. The top of the protective shell is fixedly connected to a fixing cylinder, and multiple sets of fixing cylinders are provided. Guide grooves are opened on the opposite side of two sets of fixing cylinders.

[0015] As a further description of the above technical solution:

[0016] A limit plate is slidably connected to the inner wall of the guide groove, a fixing rod is fixedly connected to the inner wall of the guide groove, and a baffle is slidably connected to the outer side of the fixing rod.

[0017] As a further description of the above technical solution:

[0018] The baffle and the fixed cylinder are elastically connected by a reset spring. The outer side of the fixed rod slides through the inner wall of the limiting plate, and the front side of the limiting plate is attached to the top of the filter plate.

[0019] As a further description of the above technical solution:

[0020] A rubber pad is provided at the bottom of the limiting plate near the filter plate.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, by using the enclosure, protective shell and sound insulation components together, the noise of the enclosure can be better reduced when the dry-type transformer is working, thereby improving the noise reduction effect of the device. At the same time, the sound insulation board can be quickly replaced, ensuring that maintenance or replacement can be carried out quickly when needed to maintain the best sound insulation effect, and further improving the flexibility and maintainability of the equipment.

[0023] 2. In this utility model, by using the limiting component and the protective shell together, the air entering the box is filtered through the filter plate when the device is working, effectively blocking impurities and dust, ensuring the cleanliness and purity of the environment inside the box, and at the same time, the filter plate can be quickly disassembled, which is convenient for daily maintenance and upkeep, and improves the overall operating efficiency and reliability of the device. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the overall device in this utility model;

[0025] Figure 2 This is a schematic diagram of the unfolded three-dimensional structure of the overall device in this utility model;

[0026] Figure 3 This is a three-dimensional structural diagram of the sound insulation component in this utility model.

[0027] Figure 4 This is a right-side three-dimensional cross-sectional view of the protective shell in this utility model;

[0028] Figure 5 This is a three-dimensional structural diagram of the limiting component in this utility model;

[0029] Figure 6 This is a top view of the three-dimensional structure of the sound insulation panel of this utility model.

[0030] Legend:

[0031] 1. Enclosure; 2. Elastic damper; 3. Transformer body; 4. Protective shell; 51. Sound-absorbing panel; 52. Sound-insulating panel; 53. Locking block; 54. Compression spring; 55. Locking groove; 56. Through groove; 57. Partition; 6. Protective plate; 61. Filter plate; 62. Fixing cylinder; 63. Guide groove; 64. Fixing rod; 65. Return spring; 66. Baffle; 67. Limiting plate. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0033] Reference Figure 1 - Figure 3This utility model provides an embodiment of a noise reduction structure for a dry-type transformer, including a housing 1, which serves as the main frame of the entire noise reduction structure, providing space for the installation and housing of the internal transformer body 3 and other noise reduction components, while also providing a certain degree of protection for the internal components. An elastic damper 2 is provided on the inner wall of the housing 1 to support the transformer body 3 and reduce the transmission of vibrations generated during transformer operation, thereby reducing noise caused by vibration. This technology is prior art and will not be described in detail. A protective door is provided on the front side of the housing 1 to close the housing 1. The transformer body 3 is located at the top of the elastic damper 2, which is the core component of the dry-type transformer and is responsible for the conversion and transmission of electrical energy. This technology is prior art and will not be described in detail. Protective shells 4 are provided on both the left and right sides of the housing 1 to provide installation positions for the internal sound insulation components and fans.

[0034] Furthermore, ventilation slots are provided on the inner wall of the enclosure 1 near the protective shell 4 to ensure ventilation and heat dissipation during transformer operation. Sound insulation components are provided on the inner wall of the enclosure 1, including sound-absorbing panels 51. The surface of these panels typically has a porous or fibrous structure, which can effectively absorb the sound energy generated during transformer operation, thereby reducing sound reflection and propagation, and lowering the reverberation and noise level inside the enclosure 1. This technology is existing technology, so it will not be described in detail. The outer side of the sound-absorbing panels 51 is fixedly connected to the inner side of the enclosure 1 and the rear side of the protective door. A sound insulation panel 52 is provided on the inner wall of the protective shell 4 near the enclosure 1, which can effectively block the propagation of sound. A locking block 53 is slidably connected to the inner wall of the front side of the protective shell 4, which cooperates with the locking slot 55 to fix and position the sound insulation panel 52.

[0035] Reference Figure 2 , Figure 3 and Figure 6 The right side of the locking block 53 is elastically connected to the protective shell 4 via a compression spring 54. Under the action of the compression spring 54, the locking block 53 can be stably inserted into the slot 55, ensuring that the sound insulation panel 52 will not shift or loosen during use, thus guaranteeing the stability and reliability of the sound insulation structure. The right side of the sound insulation panel 52 is provided with a slot 55 near the locking block 53, which precisely matches the locking block 53, allowing the sound insulation panel 52 to be firmly fixed in the predetermined position. The left side of the locking block 53 slides on the inner wall of the slot 55. The rear side of the left end of the locking block 53 is set as an inclined surface. When installing the sound insulation panel 52, the right edge of the sound insulation panel 52 contacts the inclined surface of the locking block 53, which will generate a horizontal component force on the locking block 53, causing the locking block 53 to overcome the elastic force of the compression spring 54 and move to the right, so that the sound insulation panel 52 can be smoothly inserted into the position.

[0036] Furthermore, a through groove 56 is provided on the right side of the sound insulation panel 52 to ensure a certain ventilation requirement. At the same time, the sound propagation path is changed by the staggered baffles 57 inside, which increases the resistance and energy loss of sound propagation, thereby effectively reducing the direct propagation of sound. Multiple sets of through grooves 56 are provided, and baffles 57 are staggered on the inner wall of the through grooves 56. When sound passes through the through grooves 56, the baffles 57 will cause the sound waves to be reflected, refracted and scattered, thereby dispersing and weakening the sound energy during propagation. A protective plate 6 is fixedly connected to the right side of the protective shell 4.

[0037] Reference Figure 3 - Figure 5 The inner wall of the protective shell 4 is provided with a limiting component, including a filter plate 61, which filters the air entering the protective shell 4, removes dust, impurities and particulate matter from the air, and prevents these pollutants from entering the interior of the housing 1, affecting the normal operation and heat dissipation of the transformer. The outer side of the filter plate 61 is inserted into the inner wall of the protective shell 4. The top of the protective shell 4 is fixedly connected with a fixing cylinder 62, which provides a position for the installation and fixing of the guide groove 63 and internal components. Multiple sets are provided. The two sets of fixing cylinders 62 have guide grooves 63 on opposite sides, which are set in an L shape, providing precise guidance and restriction for the sliding of the limiting plate 67, thereby facilitating the replacement and maintenance of the filter plate 61.

[0038] Reference Figure 4 and Figure 5 A limiting plate 67 is slidably connected to the inner wall of the guide groove 63 to limit the filter plate 61 in the vertical direction and prevent the filter plate 61 from coming off upward during use. A fixing rod 64 is fixedly connected to the inner wall of the guide groove 63 to provide support and guidance for the installation of the baffle 66 and the reset spring 65. A baffle 66 is slidably connected to the outer side of the fixing rod 64 and is set above the limiting plate 67 so that the limiting plate 67 can rotate.

[0039] Furthermore, the baffle 66 and the fixed cylinder 62 are elastically connected by a return spring 65, which provides elastic restoring force for the baffle 66 and the limiting plate 67. The outer side of the fixing rod 64 slides through the inner wall of the limiting plate 67. The front side of the limiting plate 67 is attached to the top of the filter plate 61. A rubber pad is provided at the bottom end of the limiting plate 67 near the filter plate 61, which can increase friction and buffer effect, and improve the stability and reliability of the limiting.

[0040] Working principle: When in use, the dry-type transformer will generate vibration and noise during operation. The transformer body 3 is installed on the elastic damper 2 inside the tank 1. The elastic damper 2 can absorb and reduce the vibration transmission generated during transformer operation and reduce the noise caused by vibration.

[0041] The sound-absorbing panels 51 on the inner side of the enclosure 1 and the back side of the protective door absorb the sound energy generated by the transformer through their porous or fibrous structure, reducing sound reflection and propagation, and lowering the reverberation and noise level inside the enclosure 1. The sound insulation panel 52 inside the protective shell 4 further blocks the propagation of sound.

[0042] When maintenance is required on the sound insulation panel 52, press the locking block 53 to the right to disengage it from the locking slot 55, overcoming the elastic force of the compression spring 54, and the sound insulation panel 52 can be easily pulled out. After the sound insulation panel 52 is pulled out, it can be inspected, cleaned, or replaced for maintenance.

[0043] After maintenance, when installing the sound insulation panel 52, the right edge of the sound insulation panel 52 contacts the inclined surface of the locking block 53, generating a horizontal force that causes the locking block 53 to move to the right against the elastic force of the compression spring 54, and the sound insulation panel 52 is smoothly inserted. When the slot 55 on the sound insulation panel 52 is aligned with the locking block 53, the compression spring 54 pushes the locking block 53 into the slot 55, thus fixing the sound insulation panel 52.

[0044] When the filter plate 61 needs to be replaced, pull the limit plate 67 upward to drive the baffle 66 to squeeze the reset spring 65, so that the limit plate 67 moves along the guide groove 63. Then rotate the limit plate 67 to disengage it from the filter plate 61 and limit it, so that the filter plate 61 can be taken out for replacement.

[0045] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A noise reduction structure for a dry-type transformer, comprising a housing (1), characterized in that: The inner wall of the enclosure (1) is provided with an elastic damper (2), the front side of the enclosure (1) is provided with a protective door, the top of the elastic damper (2) is provided with a transformer body (3), the left and right sides of the enclosure (1) are provided with protective shells (4), the inner wall of the enclosure (1) near the protective shell (4) is provided with a ventilation slot, the inner wall of the enclosure (1) is provided with a sound insulation component, the sound insulation component includes a sound-absorbing plate (51), the outer side of the sound-absorbing plate (51) is fixedly connected to the inner side of the enclosure (1) and the rear side of the protective door, the inner wall of the protective shell (4) near the enclosure (1) is provided with a sound insulation plate (52), and the inner wall of the front side of the protective shell (4) is slidably connected with a locking block (53).

2. The noise reduction structure for a dry-type transformer according to claim 1, characterized in that: The right side of the card block (53) is elastically connected to the protective shell (4) by a compression spring (54). The right side of the sound insulation plate (52) near the card block (53) has a card slot (55). The left side of the card block (53) slides on the inner wall of the card slot (55).

3. The noise reduction structure for a dry-type transformer according to claim 1, characterized in that: The sound insulation panel (52) has a through groove (56) on its right side. Multiple sets of through grooves (56) are provided. The inner wall of the through groove (56) is provided with partitions (57) in an alternating manner. The protective shell (4) is fixedly connected to the right side of the protective plate (6).

4. The noise reduction structure for a dry-type transformer according to claim 1, characterized in that: The rear left side of the card block (53) is set as an inclined surface.

5. The noise reduction structure for a dry-type transformer according to claim 1, characterized in that: The inner wall of the protective shell (4) is provided with a limiting component, which includes a filter plate (61). The filter plate (61) is inserted into the inner wall of the protective shell (4) on the outside. The top of the protective shell (4) is fixedly connected with a fixing cylinder (62), and multiple sets are provided. The two sets of fixing cylinders (62) have guide grooves (63) on opposite sides.

6. The noise reduction structure for a dry-type transformer according to claim 5, characterized in that: A limiting plate (67) is slidably connected to the inner wall of the guide groove (63), a fixing rod (64) is fixedly connected to the inner wall of the guide groove (63), and a baffle (66) is slidably connected to the outer side of the fixing rod (64).

7. The noise reduction structure for a dry-type transformer according to claim 6, characterized in that: The baffle (66) and the fixed cylinder (62) are elastically connected by a return spring (65). The outer side of the fixed rod (64) slides through the inner wall of the limiting plate (67). The front side of the limiting plate (67) is attached to the top of the filter plate (61).

8. The noise reduction structure for a dry-type transformer according to claim 7, characterized in that: A rubber pad is provided at the bottom end of the limiting plate (67) near the filter plate (61).

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