Silencing device of distribution transformer
By adopting a combined design of slidingly mounted side plates and top plates, separation drive mechanisms and sound-absorbing cotton in the sound silencer device of the transformer, the contradiction between transformer noise and heat dissipation effect is solved, and effective noise absorption and heat dissipation management is achieved.
Patent Information
- Application Number
- CN202421552182.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-03
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-07-03
AI Technical Summary
While eliminating transformer noise, the prior art may affect the heat dissipation effect of the transformer, especially the increase in the thickness of the sound-absorbing cotton will hinder air flow and heat dissipation.
A sound silencer device for distribution transformers is designed, using slidingly mounted side plates and top plates, combined with a separation drive mechanism and sound absorbing cotton. By installing sound absorbing cotton around the transformer and on the ceiling, and driving the side plates and top plates away from each other when overheating, forming a gap to improve air flow and ensure effective heat dissipation.
Effectively block and absorb noise, while ensuring effective heat dissipation of the transformer by increasing the air flow rate and increasing the heat dissipation channel, avoiding overheating, and improving sound absorption performance to achieve better noise reduction effect.
Smart Images
Figure CN222927311U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of noise reduction devices for transformers, and particularly relates to a noise reduction device for a distribution transformer. Background Technique
[0002] When a dry-type transformer used outdoors in a residential area is working, the electromagnetic force in the alternating magnetic field will cause the iron core and the coil to vibrate. These vibrations are transmitted into the air to form sound waves, thus generating noise. The electromagnetic noise is usually related to the load current, voltage level, frequency of the transformer, and the structure of the iron core and the coil. Metal components inside the transformer, such as the iron core, coil, fixture, etc., may vibrate under the action of the electromagnetic force, and these vibrations will also generate noise. In addition, if the shell and support structure of the transformer are not firm enough, additional noise may also be generated during vibration.
[0003] In order to eliminate the influence of these noises on residents, sound-absorbing materials, such as sound insulation cotton, foam plastic, glass wool, etc., are usually placed in the chassis, which can absorb the sound wave energy and reduce the propagation of sound waves.
[0004] The thickness of the sound insulation cotton will affect its sound absorption performance. In actual applications, it is necessary to select a suitable thickness according to the frequency and sound pressure level of the transformer noise. Generally speaking, the greater the thickness, the better the sound absorption effect. However, if the thickness of the sound insulation cotton is relatively large, it may reduce the air flow space and speed inside the transformer, and also have a certain impact on heat dissipation. Summary of the Invention
[0005] The purpose of the utility model is to solve the problems existing in the background technique, and propose a noise reduction device for a distribution transformer that can prevent the sound insulation cotton from affecting the heat dissipation effect of the transformer.
[0006] The technical solution of the utility model: A noise reduction device for a distribution transformer, including a chassis, a transformer fixedly installed in the chassis, and further including:
[0007] Two installation side plates and an installation top plate slidably installed in the chassis, and the transformer is located in the space formed by the installation side plates and the installation top plate;
[0008] Sound insulation cotton, which is installed on the installation side plates and the installation top plate, and the sound insulation cotton absorbs the noise generated by the transformer;
[0009] A separation driving mechanism, which is installed in the chassis, and the separation driving mechanism drives the two installation side plates to move away from each other and drives the installation top plate to rise at the same time.
[0010] Optionally, two telescopic rods are fixedly installed on the inner top plate of the chassis, and the installation top plate is fixedly installed on the telescopic shafts of the telescopic rods.
[0011] Optionally, the separation driving mechanism includes a motor fixedly installed on the inner wall top plate of the chassis, a turntable fixedly installed on the output shaft of the motor, two connecting rods rotatably installed on the turntable, and a connecting arm fixedly installed on the installation side plate. The connecting rods are in one-to-one correspondence with the connecting arm and are rotatably connected. It further includes a jacking assembly for driving the installation top plate to rise.
[0012] Optionally, the jacking assembly includes a driving cylinder highly installed on the turntable, a guiding chute arranged inside the driving cylinder, a connecting rod fixedly installed on the installation top plate, and a sliding block fixedly installed on the connecting rod. The sliding block is slidably connected with the guiding chute.
[0013] Optionally, the installation side plate is provided with wire holes facilitating the passage of wires, and the wire holes penetrate through the sound-absorbing cotton installed on the installation side plate.
[0014] Optionally, a door is rotatably installed on the chassis. A plurality of heat dissipation holes are provided on both sides of the chassis and on the door. A warning sign is installed on the door, and a control board is installed on the chassis.
[0015] Compared with the prior art, the utility model has the following beneficial technical effects:
[0016] In the utility model, sound-absorbing cotton is installed around the transformer and on the ceiling. These positions are the main paths for noise propagation, and the sound-absorbing cotton can effectively block and absorb noise.
[0017] Furthermore, through the separation driving mechanism, when the transformer overheats, it drives the two installation side plates to move away from each other, so that a gap appears between the two installation side plates. This gap can increase the air flow speed, quickly cool the transformer, prevent the transformer from overheating, and a relatively thick sound-absorbing cotton can be selected to improve the sound absorption performance and achieve a better noise reduction effect. It also drives the installation top plate to move upward, creating a gap between the installation top plate and the two installation side plates, facilitating the flow of hot air, and enabling the hot air to rise through the gap between the installation top plate and the installation side plates, which helps to improve the heat dissipation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 The structural schematic diagram of an embodiment of the utility model is given;
[0019] Figure 2 The internal sectional view of the utility model is given;
[0020] Figure 3 The structural schematic diagram of the separation driving machine of the utility model is given;
[0021] Figure 4 The position schematic diagram of the sound-absorbing cotton of the utility model is given;
[0022] Figure 5 The connection schematic diagram of the driving cylinder and the connecting rod of the present utility model is given.
[0023] Reference numerals: 1, chassis; 101, cabinet door; 102, warning sign; 103, control board; 104, heat dissipation hole; 2, mounting side plate; 201, mounting top plate; 202, sound-absorbing cotton; 3, motor; 301, turntable; 302, connecting rod; 303, connecting arm; 304, driving cylinder; 305, connecting rod; 4, telescopic rod; 5, slider; 501, guiding chute; 6, wire hole. Specific embodiments
[0024] 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0025] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the accompanying 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 therefore should not be construed as a limitation to the present utility model.
[0026] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "provided with", "connection", etc. should be understood in a broad sense. For example, "connection" 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 according to specific situations.
[0027] Embodiment
[0028] As Figure 1-2 And Figure 4As shown in the figure, a noise elimination device for a distribution transformer proposed by the present utility model includes a chassis 1 and a transformer fixedly installed inside the chassis 1. It further includes: two installation side plates 2 and an installation top plate 201 slidably installed inside the chassis 1. Two telescopic rods 4 are fixedly installed on the inner top plate of the chassis 1, and the installation top plate 201 is fixedly installed on the telescopic shafts of the telescopic rods 4. Sound-absorbing cotton 202 is installed on the installation side plates 2 and the installation top plate 201, and the sound-absorbing cotton 202 absorbs the noise generated by the transformer. The transformer is located in the space formed by the installation side plates 2 and the installation top plate 201. Sound-absorbing cotton 202 is installed around the transformer and on the ceiling. These positions are the main paths for noise propagation, and the sound-absorbing cotton 202 can effectively block and absorb noise.
[0029] As Figure 2-3 and Figure 5 shown in the figure, a separation driving mechanism is installed inside the chassis 1. The separation driving mechanism drives the two installation side plates 2 to move away from each other while driving the installation top plate 201 to rise. The separation driving mechanism includes a motor 3 fixedly installed on the inner wall top plate of the chassis 1, a turntable 301 fixedly installed on the output shaft of the motor 3, two connecting rods 302 rotatably installed on the turntable 301, and connecting arms 303 fixedly installed on the installation side plates 2. The connecting rods 302 and the connecting arms 303 are in one-to-one correspondence and are rotatably connected. It further includes a jacking component for driving the installation top plate 201 to rise. When the transformer overheats, the motor 3 is started to drive the turntable 301 to rotate, thereby driving the connecting rods 302 to swing, so that the connecting rods 302 push the connecting arms 303, thereby driving the two installation side plates 2 to move away from each other, so that a gap appears between the two installation side plates. This gap can increase the air flow speed, can quickly cool the transformer, prevent the transformer from overheating, and can select a thicker sound-absorbing cotton, which can improve the sound-absorbing performance and achieve a better noise reduction effect;
[0030] Among them, the jacking component includes a driving cylinder 304 highly installed on the turntable 301, a guiding chute 501 arranged inside the driving cylinder 304, a connecting rod 305 fixedly installed on the installation top plate 201, and a slider 5 fixedly installed on the connecting rod 305. The slider 5 is slidably connected with the guiding chute 501. When the turntable 301 rotates, it will drive the driving cylinder 304 to rotate, thereby driving the slider 5 to move along the guiding chute 501, thereby driving the installation top plate 201 to move upward, so that a gap appears between the installation top plate 201 and the two installation side plates 2, facilitating the flow of hot air, and the hot air rising will pass through the gap between the installation top plate 201 and the installation side plates 2, which helps to improve the heat dissipation efficiency.
[0031] As Figure 2 and Figure 4As shown in the figure, the installation side plate 2 is provided with a wire hole 6 facilitating the passage of wires, and the wire hole 6 penetrates through the sound-absorbing cotton 202 installed on the installation side plate 2. The wires are inserted through the wire hole 6, which facilitates the connection of the wires to the transformer.
[0032] As Figure 1 shown in the figure, a door 101 is rotatably installed on the chassis 1. A plurality of heat dissipation holes 104 are provided on both sides of the chassis 1 and on the door 101. A warning sign 102 is installed on the door 101, and a control board 103 is installed on the chassis 1. Air exchange with the outside is carried out through the plurality of heat dissipation holes 104 to dissipate heat from the transformer.
[0033] Working principle: Sound-absorbing cotton 202 is installed around the transformer and on the ceiling. These positions are the main paths for noise propagation, and the sound-absorbing cotton 202 can effectively block and absorb noise.
[0034] When the transformer overheats, the motor 3 is started to drive the turntable 301 to rotate, thereby driving the connecting rod 302 to push the connecting arm 303, thereby driving the two installation side plates 2 to move away from each other, so that a gap appears between the two installation side plates. This gap can increase the air flow speed, quickly cool the transformer, prevent the transformer from overheating, and a relatively thick sound-absorbing cotton can be selected to improve the sound-absorbing performance and achieve a better noise reduction effect. When the turntable 301 rotates, it will drive the drive cylinder 304 to rotate, thereby driving the slider 5 to move along the guide chute 501, thereby driving the installation top plate 201 to move upward, so that a gap appears between the installation top plate 201 and the two installation side plates 2, facilitating the flow of hot air, and the hot air rising will pass through the gap between the installation top plate 201 and the installation side plate 2, which helps to improve the heat dissipation efficiency.
[0035] The above specific embodiments are only several alternative embodiments of the present invention. Based on the technical solution of the present invention and the relevant revelations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.
Claims
1. A silencing device for a distribution transformer, applied to a transformer fixedly installed in a chassis (1), characterized in that: Also includes: Two mounting side plates (2) and a mounting top plate (201) are slidably mounted in the chassis (1), wherein the transformer is located in a space formed by the mounting side plates (2) and the mounting top plate (201); Sound-absorbing cotton (202), the sound-absorbing cotton (202) being installed on the installation side plate (2) and the installation top plate (201), the sound-absorbing cotton (202) absorbing the noise generated by the transformer; A separation drive mechanism is installed in the chassis (1), and the separation drive mechanism drives the two mounting side plates (2) to move away from each other while driving the mounting top plate (201) to rise.
2. A silencing device for a distribution transformer according to claim 1, characterized in that: Two telescopic rods (4) are fixedly mounted on the internal top plate of the chassis (1), and the mounting top plate (201) is fixedly mounted on the telescopic shafts of the telescopic rods (4).
3. A silencing device for a distribution transformer according to claim 1, characterized in that: The separation drive mechanism comprises a motor (3) fixedly mounted on the top plate of the inner wall of the chassis (1), a turntable (301) fixedly mounted on the output shaft of the motor (3), two connecting rods (302) rotatably mounted on the turntable (301), and a connecting arm (303) fixedly mounted on the mounting side plate (2), wherein the connecting rods (302) correspond to the connecting arms (303) in a one-to-one manner and are rotatably connected, and further comprises a lifting assembly for driving the mounting top plate (201) to rise.
4. A silencing device for a distribution transformer according to claim 3, characterized in that: The lifting assembly comprises a driving cylinder (304) mounted at a height on a rotating disk (301), a guide slide groove (501) provided inside the driving cylinder (304), a connecting rod (305) fixedly mounted on a mounting top plate (201), and a sliding block (5) fixedly mounted on the connecting rod (305), wherein the sliding block (5) is slidably connected to the guide slide groove (501).
5. The silencing device for a distribution transformer according to claim 1, characterized in that: The mounting side plate (2) is provided with a wire hole (6) for facilitating the passage of a wire, and the wire hole (6) penetrates the sound-absorbing cotton (202) mounted on the mounting side plate (2).
6. The silencing device for a distribution transformer according to claim 1, characterized in that: A case door (101) is rotatably mounted on the case (1), a plurality of heat dissipation holes (104) are provided on both sides of the case (1) and on the case door (101), a warning sign (102) is mounted on the case door (101), and a control panel (103) is mounted on the case (1).