Noise reduction device for box-type substation

Abstract

The utility model discloses a noise reduction device for a box-type substation, which comprises a box-type substation shell, ventilation mechanisms are arranged on the two sides of the surface of the box-type substation shell, and each ventilation mechanism comprises a first cavity, a second cavity, an air inlet, an air outlet, a first through groove, a second through groove and a first acoustic panel. A first cavity is fixedly formed in one side of the surface of the box-type substation shell, a second cavity is fixedly formed in the side, away from the first shell, of the surface of the box-type substation shell, and air inlets are formed in the lower ends of the box-type substation shell and the first cavity. According to the utility model, the use effect is good, a noise reduction structure is additionally arranged on the basis of a traditional heat dissipation groove, so that air flow for ventilation and heat dissipation can smoothly pass through for heat dissipation, but sound waves cannot smoothly pass through the cavity, are reflected and refracted in the cavity and are in contact with the sound absorption plate when penetrating through the cavity, so that the sound waves are converted into heat energy for noise reduction.

Description

Technical Field

[0001] The utility model relates to the technical field of noise reduction devices, in particular to a noise reduction device for a box-type substation. Background Technique

[0002] A box-type substation, also called a prefabricated substation or a prefabricated transformer substation. A box-type substation is a high-voltage switchgear, a distribution transformer and a low-voltage distribution device, which are arranged together according to a certain wiring scheme as a factory prefabricated indoor and outdoor compact distribution equipment. That is, functions such as transformer step-down and low-voltage power distribution are organically combined together and installed in a moisture-proof, rust-proof, dust-proof, mouse-proof, fire-proof, anti-theft, heat-insulating, fully enclosed and movable steel structure box, which is especially suitable for urban network construction and transformation.

[0003] In the prior art, a box-type substation will generate a certain amount of noise during operation. When the load current is large, the transformer may generate a large amount of noise; if it is not firmly installed or the foundation is unstable, noise may also increase due to vibration; and in the prior art, such as the noise reduction device for a box-type substation with the application number 202321104451.0, when in use, the noise generated by the vibration of the box body is prevented by increasing the wall weight of the box-type substation body, and the first noise reduction part and the second noise reduction part are used for sound absorption and noise reduction. However, in order to ensure the ventilation effect, heat dissipation slots are provided in the whole device, and noise will still be transmitted through the heat dissipation slots. No sound-absorbing material is provided at the position of the heat dissipation slots to ensure ventilation. Therefore, the control effect on noise is poor. Therefore, in view of this problem, a noise reduction device for a box-type substation is needed for improvement. Content of the Utility Model

[0004] The purpose of the utility model is to provide a noise reduction device for a box-type substation to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: A noise reduction device for a box-type substation, including a box-type substation housing, ventilation mechanisms are arranged on both sides of the surface of the box-type substation housing. The ventilation mechanisms include a first cavity, a second cavity, an air inlet, an air outlet, a first through groove, a second through groove, and a first sound-absorbing plate. A first cavity is fixedly arranged on one side of the surface of the box-type substation housing, a second cavity is fixedly arranged on the side of the box-type substation housing far from the first housing, an air inlet is arranged between the box-type substation housing and the lower end of the first cavity, an air outlet is arranged between the box-type substation housing and the upper end of the second cavity, a first through groove is opened at the upper end of the outer surface of the first cavity, a second through groove is arranged at the lower end of the outer surface of the second cavity, and a plurality of first sound-absorbing plates are uniformly and fixedly arranged inside the first cavity and the second cavity.

[0006] Preferably, heat dissipation blowers are fixedly arranged on the outer surfaces of the first through groove and the second through groove. The heat dissipation blowers can accelerate the air flow inside the first cavity and the second cavity, enabling the air to quickly pass through the interior of the box-type substation housing to carry away the heat of the internal transformer. At this time, the first sound-absorbing panel acts as a flow guide for the air flow and will not overly affect the flow of the heat dissipation air flow, but it will absorb sound waves and refract and reflect sound waves for sound waves.

[0007] Preferably, a sealed box door is movably arranged on the outer surface of the box-type substation housing through a hinge. Opening the sealed box door through the hinge facilitates the operation of the transformer inside the box-type substation housing. At the same time, corresponding sound insulation and sound absorption materials should also be installed on the inner side wall of the sealed box door.

[0008] Preferably, a second sound-absorbing panel is arranged on the inner side wall of the box-type substation housing. The box-type substation housing itself also has the function of sound absorption and insulation through the second sound-absorbing panel, thereby further reducing the transmission of noise and further improving the noise reduction effect.

[0009] Preferably, a third sound-absorbing panel is arranged on the inner side walls of the first cavity and the second cavity. In addition to the first sound-absorbing panel in the air flow channel absorbing sound waves for noise reduction, some sound waves will contact the inner side walls of the first cavity and the second cavity due to reflection and refraction. At this time, further sound absorption can be achieved through the third sound-absorbing panel to reduce the transmission of noise and further improve the noise reduction effect.

[0010] Preferably, a bottom plate is fixedly arranged at the lower end of the box-type substation housing. The bottom plate can provide a stable supporting force for the box-type substation housing.

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

[0012] 1. When the heat dissipation air flow passes through the first cavity and the second cavity in the present utility model, the first sound-absorbing panel acts as a flow guide for the air flow and will not overly affect the flow of the heat dissipation air flow, but it will absorb sound waves and refract and reflect sound waves for sound waves. In this way, the sound waves cannot pass through smoothly when passing through the cavity, are reflected and refracted inside the cavity, and will contact the sound-absorbing panel, thereby converting the sound waves into heat energy for noise reduction. In this way, the device can meet the heat dissipation requirements while also achieving noise reduction and sound insulation.

[0013] 2. The present utility model designs the first through groove, the second through groove, the air inlet and the air outlet in a staggered manner. Compared with the heat dissipation groove design in the prior art, it can effectively prevent rainwater from entering the interior of the box-type substation housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of a noise reduction device for a box-type substation of the present utility model;

[0015] Figure 2 This is a cross-sectional view of the overall structure of a noise reduction device for a box-type substation of the present utility model;

[0016] Figure 3 In a noise reduction device for a box-type substation of the present utility model Figure 2 Side view;

[0017] Figure 4 In a noise reduction device for a box-type substation of the present utility model Figure 2 Front view.

[0018] In the figure: 1. Box-type substation housing; 2. First cavity; 3. Second cavity; 4. Air inlet; 5. Air outlet; 6. First through groove; 7. Second through groove; 8. First sound-absorbing board; 9. Cooling fan; 10. Sealed box door; 11. Second sound-absorbing board; 12. Third sound-absorbing board; 13. Bottom plate. Specific implementation mode

[0019] 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 creative efforts shall fall within the protection scope of the present utility model.

[0020] Please refer to Figures 1-4 , the present utility model provides a technical solution: a noise reduction device for a box-type substation, including a box-type substation housing 1, ventilation mechanisms are arranged on both sides of the surface of the box-type substation housing 1, the ventilation mechanisms include a first cavity 2, a second cavity 3, an air inlet 4, an air outlet 5, a first through groove 6, a second through groove 7, and a first sound-absorbing board 8. A first cavity 2 is fixedly arranged on one side of the surface of the box-type substation housing 1, a second cavity 3 is fixedly arranged on the side of the box-type substation housing 1 away from the first housing, an air inlet 4 is arranged between the box-type substation housing 1 and the lower end of the first cavity 2, an air outlet 5 is arranged between the box-type substation housing 1 and the upper end of the second cavity 3, a first through groove 6 is opened at the upper end of the outer surface of the first cavity 2, a second through groove 7 is arranged at the lower end of the outer surface of the second cavity 3, and a plurality of first sound-absorbing boards 8 are uniformly and fixedly arranged inside the first cavity 2 and the second cavity 3.

[0021] A heat dissipation fan 9 is fixedly arranged on the outer surfaces of both the first through groove 6 and the second through groove 7. Through the heat dissipation fan 9, the air flow inside the first cavity 2 and the second cavity 3 can be accelerated, enabling the air to quickly pass through the interior of the box-type substation housing 1 to carry away the heat of the internal transformer. And at this time, the first sound-absorbing plate 8 is equivalent to a flow deflector for the air flow, which will not overly affect the flow of the heat dissipation air flow, but will absorb, refract, and reflect sound waves for sound waves.

[0022] A sealed box door 10 is movably arranged on the outer surface of the box-type substation housing 1 through a hinge. Opening the sealed box door 10 through the hinge facilitates the operation of the transformer inside the box-type substation housing 1. At the same time, corresponding sound insulation and sound absorption materials should also be installed on the inner side wall of the sealed box door 10.

[0023] A second sound-absorbing plate 11 is arranged on the inner side wall of the box-type substation housing 1. Through the second sound-absorbing plate 11, the box-type substation housing 1 itself also has the function of sound absorption and insulation, thereby further reducing the transmission of noise and further improving the noise reduction effect.

[0024] A third sound-absorbing plate 12 is arranged on the inner side walls of the first cavity 2 and the second cavity 3. In addition to the first sound-absorbing plate 8 in the air flow channel absorbing sound waves for noise reduction, some sound waves will also contact the inner side walls of the first cavity 2 and the second cavity 3 due to reflection and refraction. At this time, through the third sound-absorbing plate 12, further sound absorption can be achieved to reduce the transmission of noise and further improve the noise reduction effect.

[0025] A bottom plate 13 is fixedly arranged at the lower end of the box-type substation housing 1. Through the bottom plate 13, a stable supporting force can be provided for the box-type substation housing 1.

[0026] Working principle: When using this device, the heat dissipation flow channel of this device is as follows. The air enters through the first through groove 6, and then the air flow passes through the interior of the first cavity 2 through the air inlet 4, enters from the lower end of the box-type substation housing 1, then the air flow passes through the interior of the box-type substation housing 1 and exits from the air outlet 5, and then passes through the interior of the second cavity 3 and finally is discharged from the second through groove 7. In this way, this device can meet the normal ventilation and heat dissipation requirements.

[0027] When the air flow passes through the interiors of the first cavity 2 and the second cavity 3, the first sound-absorbing plate 8 is equivalent to a flow deflector for the air flow, which will not overly affect the flow of the heat dissipation air flow, but will absorb, refract, and reflect sound waves for sound waves. In this way, the sound waves cannot pass through smoothly when passing through the cavity, are reflected and refracted inside the heat dissipation groove, and will contact the sound-absorbing plate, thereby converting the sound waves into heat energy for noise reduction. In this way, this device can maintain the heat dissipation requirements while also achieving noise reduction and sound insulation.

[0028] Moreover, the first through groove 6 and the second through groove 7 of the device are designed to be misaligned with the air inlet 4 and the air outlet 5. Compared with the heat dissipation groove design in the prior art, it can also effectively prevent rainwater from entering the interior of the box-type substation housing 1;

[0029] The multi-place sound absorption boards adopted by this device are designed with multiple micropores. After sound enters the pores, it undergoes friction and resonance with the air in the micropores, converting sound energy into heat energy, thereby reducing the energy of the sound and playing a role in noise reduction; this design is also a commonly used sound absorption means in the prior art, so it will not be elaborated further.

[0030] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A noise reduction device for a box-type substation, comprising a box-type substation housing (1), characterized in that: Ventilation mechanisms are arranged on both sides of the surface of the box-type substation shell (1), and the ventilation mechanisms include a first cavity (2), a second cavity (3), an air inlet (4), an air outlet (5), a first through slot (6), a second through slot (7), and a first sound absorbing panel (8). The first cavity (2) is fixedly arranged on one side of the surface of the box-type substation shell (1), and the second cavity (3) is fixedly arranged on the side of the surface of the box-type substation shell (1) away from the first shell. The air inlet (4) is arranged between the box-type substation shell (1) and the lower end of the first cavity (2), and the air outlet (5) is arranged between the box-type substation shell (1) and the upper end of the second cavity (3). A first through slot (6) is provided at the upper end of the outer surface of the first cavity (2), and a second through slot (7) is provided at the lower end of the outer surface of the second cavity (3). A plurality of first sound absorbing panels (8) are evenly and fixedly arranged inside the first cavity (2) and the second cavity (3).

2. A noise reduction device for a box-type substation according to claim 1, characterized in that: Heat dissipation fans (9) are fixedly arranged on the outer surfaces of the first through groove (6) and the second through groove (7).

3. A noise reduction device for a box-type substation according to claim 1, characterized in that: The outer surface of the box-type transformer substation housing (1) is provided with a sealed box door (10) via hinges.

4. A noise reduction device for a box-type substation according to claim 1, characterized in that: The inner side wall of the box-type substation shell (1) is provided with a second sound absorbing panel (11).

5. The noise reduction device for a box-type substation according to claim 1 is characterized in that: A third sound absorbing panel (12) is provided on the inner side walls of the first cavity (2) and the second cavity (3).

6. A noise reduction device for a box-type substation according to claim 1, characterized in that: A bottom plate (13) is fixedly arranged at the lower end of the box-type substation housing (1).

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