Environment-friendly electric power facility sound insulation structure

Abstract

The utility model discloses an environment-friendly electric power facility sound insulation structure which comprises a connecting frame and a multi-layer sound insulation structure, the multi-layer sound insulation structure comprises an outer-layer sound absorption board, a middle sound insulation layer and an inner-layer damping layer, a plurality of conical sound absorption protrusions are arranged on the surface of the outer-layer sound absorption board, spiral grooves are formed in the surfaces of the conical sound absorption protrusions, and the outer-layer sound absorption board and the middle sound insulation layer are connected through the spiral grooves. A micropore structure is arranged on the outer-layer sound absorption plate, a plurality of hexagonal holes are evenly formed in the middle sound insulation layer, the hexagonal holes are filled with porous ceramic core bodies, and a second protruding structure and a concave structure are arranged on the surface of the inner-layer damping layer. According to the sound insulation board, the conical sound absorption protrusions and the spiral grooves on the surface of the outer-layer sound absorption board increase the sound reflection path, the absorption effect on medium-high frequency noise is improved, the porous ceramic core body of the middle sound insulation layer is filled, the sound insulation performance is enhanced, and the irregular polygonal protrusions and sunken structures of the inner-layer damping layer improve the sound insulation performance. The friction force with the contact surface is increased, and the sound is scattered and absorbed.

Description

Technical Field

[0001] This utility model relates to the field of sound insulation technology for power facilities, and more specifically, to an environmentally friendly sound insulation structure for power facilities. Background Technology

[0002] With the continuous development of the power industry, the noise generated by power facilities during operation has attracted increasing attention. Power facilities continuously generate noise of various frequencies during operation, especially mid-to-high frequency noise. This noise not only pollutes the surrounding environment and affects residents' normal lives and rest, but may also pose a potential threat to the ecological balance. In the face of increasingly stringent environmental protection requirements, how to effectively reduce the noise generated by power facilities has become an important issue that urgently needs to be addressed.

[0003] Noise generated by power facilities contains a large number of mid-to-high frequency components, but existing sound insulation structures have limited absorption capacity for these noises, allowing them to easily penetrate and affecting sound insulation effectiveness. Furthermore, some sound insulation structures have a small contact area with sound, resulting in low sound absorption efficiency and inefficient use of sound energy. Therefore, it is necessary to increase the contact area between the sound insulation structure and sound to improve sound absorption efficiency. This device was invented to address these problems. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, this utility model provides an environmentally friendly sound insulation structure for power facilities to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an environmentally friendly sound insulation structure for power facilities, characterized in that it includes a connecting frame and a multi-layer sound insulation structure, wherein the multi-layer sound insulation structure includes an outer sound-absorbing panel, a middle sound insulation layer and an inner damping layer;

[0006] The outer sound-absorbing panel has multiple conical sound-absorbing protrusions on its surface, and spiral grooves are formed on the surface of the conical sound-absorbing protrusions. The outer sound-absorbing panel has a microporous structure.

[0007] The middle sound insulation layer has several hexagonal holes evenly distributed, and the hexagonal holes are filled with porous ceramic cores;

[0008] The surface of the inner damping layer is provided with a second protrusion structure and a recess structure.

[0009] Furthermore, reinforcing ribs are provided at all four corners of the connecting frame.

[0010] Furthermore, the reinforcing ribs have an internal hollow structure, and the hollow part is filled with sound-absorbing material.

[0011] Furthermore, connecting brackets can be detachably installed at the middle positions of both side walls of the connecting frame, and the two connecting brackets are symmetrically arranged along one of the diagonal directions of the connecting frame. Each connecting bracket has a snap-fit ​​hole on both sides. Connecting protrusions can be detachably installed at the middle positions of the other two side walls of the connecting frame, and the two connecting protrusions are symmetrically arranged along the other diagonal direction of the connecting frame. Each connecting protrusion has a mounting hole on both sides, and a spring is fixedly installed in the mounting hole. A snap-fit ​​block that matches the snap-fit ​​hole is fixedly installed at the outer end of the spring.

[0012] Furthermore, the cone-shaped sound-absorbing protrusions have a height of 10-15mm and a bottom diameter of 8-12mm, and are evenly distributed in a matrix pattern.

[0013] Furthermore, the spiral groove has a depth of 2-3 mm and a width of 1-2 mm.

[0014] Furthermore, the pore size of the microporous structure is 0.1-0.5 mm, and the pore spacing is 1-3 mm.

[0015] Furthermore, the porous ceramic core has a pore size of 0.1-0.5 mm and a porosity of ≥60%.

[0016] Furthermore, the porous ceramic core surface is provided with a first protrusion structure, the first protrusion structure having a height of 0.05-0.1mm and a diameter of 0.1-0.2mm.

[0017] Furthermore, the height of the second protrusion is 0.5-1mm, and the depth of the recess is 0.3-0.8mm.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. The multi-layer sound insulation structure includes an outer sound-absorbing panel, a middle sound insulation layer, and an inner damping layer. The conical sound-absorbing protrusions and spiral grooves on the surface of the outer sound-absorbing panel increase the sound reflection path and improve the absorption effect of mid-to-high frequency noise. The honeycomb structure and porous ceramic core filling of the middle sound insulation layer further enhance the sound insulation performance. The first protrusion structure on the surface of the porous ceramic core increases the contact area with sound and improves the sound absorption efficiency. The irregular polygonal protrusions and depressions of the inner damping layer increase the friction with the contact surface and also play a role in scattering and absorbing sound.

[0020] 2. The connecting frame, through the design of connecting brackets and connecting protrusions, enables quick and convenient assembly, allowing for the formation of larger sound insulation structures. The assembly process utilizes the cooperation of snap-fit ​​blocks and snap-fit ​​holes, making the operation simple and ensuring the stability of the assembled structure. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0022] Figure 1 A schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the connecting protrusion provided by this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the outer sound-absorbing panel provided by this utility model;

[0025] Figure 4 A schematic diagram of the structure of the intermediate sound insulation layer provided by this utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the inner damping layer provided by this utility model.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Connecting frame; 11. Reinforcing rib; 12. Connecting bracket; 121. Snap-fit ​​hole; 13. Connecting protrusion; 131. Mounting hole; 132. Spring; 133. Snap-fit ​​block; 2. Multi-layer sound insulation structure; 21. Outer sound-absorbing panel; 211. Conical sound-absorbing protrusion; 2111. Spiral groove; 212. Microporous structure; 22. Middle sound insulation layer; 221. Porous ceramic core; 2211. First protrusion structure; 23. Inner damping layer; 231. Second protrusion structure; 232. Recessed structure. Detailed Implementation

[0029] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] See attached document Figures 1-5 The environmentally friendly sound insulation structure for power facilities in this embodiment includes a connecting frame 1 and a multi-layer sound insulation structure 2.

[0032] See attached document Figure 1 The connecting frame 1 is made of aluminum alloy and its surface is anodized to improve corrosion resistance and aesthetics. Reinforcing ribs 11 are provided at the four corners of the connecting frame 1. The reinforcing ribs 11 are triangular in structure and are used to enhance the strength and stability of the connecting frame 1.

[0033] As an alternative, the triangular reinforcing rib 11 has an internal hollow structure, and the hollow part is filled with sound-absorbing material. The sound-absorbing material is selected from glass wool or polyester fiber sound-absorbing cotton. While enhancing the strength and stability of the connecting frame 1, it can also play a certain auxiliary sound insulation role, further improving the overall sound insulation performance of the sound insulation structure.

[0034] See attached document Figure 1 and Figure 2 The connecting frame 1 has a connecting bracket 12 that can be detachably installed at the middle position of each of its two side walls. The two connecting brackets 12 are symmetrically arranged along one of the diagonal directions of the connecting frame 1. Each of the two connecting brackets 12 has a snap-fit ​​hole 121 on both sides. The connecting protrusions 13 are detachably installed at the middle position of each of the other two side walls of the connecting frame 1. The two connecting protrusions 13 are symmetrically arranged along the other diagonal direction of the connecting frame 1. Each of the two connecting protrusions 13 has a mounting hole 131 on both sides. A spring 132 is fixedly installed in the mounting hole 131. A snap-fit ​​block 133 that matches the snap-fit ​​hole 121 is fixedly installed at the outer end of the spring 132.

[0035] During assembly, the snap-fit ​​block 133 on the connecting protrusion 13 is pressed down, causing the snap-fit ​​block 133 to retract into the mounting hole 131. At this time, the spring 132 is in a compressed state. Then, the connecting protrusion 13 on one connecting frame 1 is aligned with the connecting bracket 12 on another connecting frame 1. The connection between the two connecting frames 1 is achieved by utilizing the cooperation between the snap-fit ​​block 133 and the snap-fit ​​hole 121. Repeating the above operation can form a larger sound insulation structure. At the same time, polyurethane foam is filled into the gap between two adjacent connecting frames 1 after assembly. The polyurethane foam can further absorb sound energy to enhance the sound insulation effect.

[0036] The multi-layer sound insulation structure 2 includes an outer sound-absorbing panel 21, a middle sound insulation layer 22, and an inner damping layer 23. The outer sound-absorbing layer is made of recycled plastic particles and natural fibers mixed and pressed together. The middle sound insulation layer 22 has a honeycomb structure and is made of aluminum alloy. The inner damping layer 23 is made of rubber particles and plant resin composite.

[0037] See attached document Figure 3 The outer sound-absorbing layer has multiple conical sound-absorbing protrusions 211 on its surface. The height of the conical sound-absorbing protrusions 211 is 10-15mm and the bottom diameter is 8-12mm. They are evenly distributed in a matrix.

[0038] Furthermore, the surface of the conical sound-absorbing protrusion 211 is provided with a spiral groove 2111, the groove depth is 2-3mm and the width is 1-2mm. The spiral groove 2111 can increase the reflection path of sound on the surface of the sound-absorbing protrusion, so that the sound energy is absorbed more during multiple reflections, thereby improving the absorption effect of mid-to-high frequency noise.

[0039] The outer sound-absorbing layer is provided with a microporous structure 212, the pore diameter of which is 0.1-0.5mm and the pore spacing is 1-3mm, which is used to enhance the absorption capacity of mid-to-high frequency noise.

[0040] As an alternative, the microporous structure 212 is designed with a gradient pore size, that is, the pore size gradually increases from the surface of the sound-absorbing plate to the inside. Specifically, the surface pore size is 0.1 mm, the pore size increases to 0.3 mm at a depth of 0.5 mm, and then increases to 0.5 mm at a depth of 1 mm. This gradient pore size structure allows sounds of different frequencies to be absorbed more effectively according to their wavelength characteristics after entering the micropores, thus broadening the sound absorption band and improving the absorption capacity for noise of multiple frequencies.

[0041] See attached document Figure 4 The middle sound insulation layer 22 has a number of hexagonal holes evenly distributed on it. The hexagonal holes are filled with porous ceramic cores 221. The pore diameter of the porous ceramic cores 221 is 0.1-0.5mm and the porosity is ≥60%. The surface of the porous ceramic cores 221 is provided with first protrusion structures 2211. The height of the first protrusion structures 2211 is 0.05-0.1mm and the diameter is 0.1-0.2mm. These first protrusion structures 2211 can increase the contact area between the porous ceramic cores 221 and the sound, and improve the sound absorption efficiency.

[0042] See attached document Figure 5 The inner damping layer 23 has a second protruding structure 231 and a recessed structure 232 on its surface. The height of the second protruding structure 231 is 0.5-1mm, and the depth of the recessed structure 232 is 0.3-0.8mm. The protrusion and the recess are irregular polygons. The second protruding structure 231 and the recessed structure 232 can increase the friction between the inner damping layer 23 and the connecting frame 1 or other contact surfaces, reduce the relative displacement caused by vibration, and also play a certain role in scattering and absorbing sound, further improving the sound insulation effect.

[0043] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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. An environmentally friendly sound insulation structure for power facilities, characterized in that, It includes a connecting frame (1) and a multi-layer sound insulation structure (2), wherein the multi-layer sound insulation structure (2) includes an outer sound-absorbing panel (21), a middle sound insulation layer (22) and an inner damping layer (23); The outer sound-absorbing plate (21) has multiple conical sound-absorbing protrusions (211) on its surface, and the conical sound-absorbing protrusions (211) have spiral grooves (2111) on their surface. The outer sound-absorbing plate (21) has a microporous structure (212). The intermediate sound insulation layer (22) has a plurality of hexagonal holes evenly distributed on it, and the hexagonal holes are filled with porous ceramic cores (221). The inner damping layer (23) has a second protruding structure (231) and a recessed structure (232) on its surface.

2. The environmentally friendly sound insulation structure for power facilities according to claim 1, characterized in that: The connecting frame (1) is provided with reinforcing ribs (11) at all four corners.

3. The environmentally friendly sound insulation structure for power facilities according to claim 2, characterized in that: The reinforcing rib (11) has an internal hollow structure, and the hollow part is filled with sound-absorbing material.

4. The environmentally friendly sound insulation structure for power facilities according to claim 1, characterized in that: The connecting frame (1) has a connecting bracket (12) that can be detachably installed at the middle position of each of its two side walls. The two connecting brackets (12) are symmetrically arranged along one of the diagonal directions of the connecting frame (1). Each connecting bracket (12) has a snap-fit ​​hole (121) on both sides. The connecting frame (1) has a connecting protrusion (13) that can be detachably installed at the middle position of each of its other two side walls. The two connecting protrusions (13) are symmetrically arranged along the other diagonal direction of the connecting frame (1). Each connecting protrusion (13) has a mounting hole (131) on both sides. A spring (132) is fixedly installed in the mounting hole (131). A snap-fit ​​block (133) that matches the snap-fit ​​hole (121) is fixedly installed at the outer end of the spring (132).

5. The environmentally friendly sound insulation structure for power facilities according to claim 1, characterized in that: The conical sound-absorbing protrusions (211) have a height of 10-15mm and a bottom diameter of 8-12mm, and are evenly distributed in a matrix.

6. The environmentally friendly sound insulation structure for power facilities according to claim 1, characterized in that: The spiral groove (2111) has a depth of 2-3 mm and a width of 1-2 mm.

7. The environmentally friendly sound insulation structure for power facilities according to claim 1, characterized in that: The microporous structure (212) has a pore diameter of 0.1-0.5 mm and a pore spacing of 1-3 mm.

8. The environmentally friendly sound insulation structure for power facilities according to claim 1, characterized in that: The porous ceramic core (221) has a pore size of 0.1-0.5 mm and a porosity of ≥60%.

9. The environmentally friendly sound insulation structure for power facilities according to claim 1, characterized in that: The porous ceramic core (221) has a first protrusion structure (2211) on its surface. The first protrusion structure (2211) has a height of 0.05-0.1 mm and a diameter of 0.1-0.2 mm.

10. The environmentally friendly sound insulation structure for power facilities according to claim 1, characterized in that: The height of the second protruding structure (231) is 0.5-1mm, and the depth of the recessed structure (232) is 0.3-0.8mm.

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