Soundproofing and noise reduction environment-friendly fireproof composite rock wool board

Abstract

The utility model belongs to composite rock wool board technical field, especially is a sound insulation and noise reduction environmental protection type fire -retardant composite rock wool board, including the base layer, gradient noise reduction layer, inner noise reduction layer and bearing framework that are composed gradually from inside to outside, wherein, the base layer and gradient noise reduction layer between adopt formaldehydeless water -based adhesive bonding, inner noise reduction layer includes the damping plate that sets up between gradient noise reduction layer and bearing framework, hollow cavity is set up along the length direction of composite rock wool board in the damping plate, and the inboard of hollow cavity is provided with sound insulation cotton. The utility model discloses through the collaborative design of gradient noise reduction layer and inner noise reduction layer, has realized the accurate barrier of different frequency band noise, then has realized the effective noise reduction processing of new energy storage station equipment, effectively reduces the influence of noise to the surrounding environment, and the effect of noise reduction is good, and the structural strength is high, and the life is long, and the environmental protection is good, solves the problem that the present stage composite rock wool board structural strength is not ideal, and the noise reduction effect is not good.

Description

Technical Field

[0001] This utility model relates to the technical field of composite rock wool boards, specifically a sound-insulating, noise-reducing, environmentally friendly, and fire-resistant composite rock wool board. Background Technology

[0002] As a core facility for clean energy storage and dispatch, new energy storage power stations are typically equipped with a large number of energy storage battery packs, converters, transformers, and cooling systems. During operation, these devices generate continuous compound noise, mainly including: low-frequency noise (20-200Hz) generated by mechanical vibration of the equipment, medium-frequency noise (200-2000Hz) generated by fans and airflow, and high-frequency electromagnetic noise (above 2000Hz) from electrical components. Long-term exposure to such noise can not only affect the lives of nearby residents but may also damage the hearing health of operation and maintenance personnel.

[0003] Currently, most sound insulation measures for new energy energy storage power stations use traditional rock wool boards for wall or cabinet cladding. However, this method has the following technical drawbacks: First, while traditional rock wool boards offer some protection against high-frequency noise, they are insufficient for blocking the main low-frequency vibration noise of energy storage power stations, typically reducing noise by only 15-25 dB. This falls short of the 55 dB (daytime) limit requirement for industrial areas specified in the "Environmental Noise Quality Standard" (GB3096-2008). Second, some rock wool boards use phenolic resin and other formaldehyde-containing adhesives during production, which release formaldehyde and other harmful gases over a long period, contradicting the environmental protection goals of energy storage power stations. Furthermore, they are difficult to degrade after disposal, easily causing secondary pollution. Third, the strength of rock wool boards is not ideal; a single rock wool structure is prone to moisture absorption and caking in humid environments, leading to a decrease in sound insulation performance of more than 30%. These shortcomings necessitate improvements. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a sound-insulating, noise-reducing, environmentally friendly, and fire-resistant composite rock wool board, which solves the technical problems of poor low-frequency sound insulation, insufficient environmental friendliness, weak structural stability, and limited functionality of existing rock wool boards when applied to new energy energy storage power stations.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0008] An environmentally friendly fireproof composite rock wool board with sound insulation and noise reduction comprises a base layer, a gradient noise reduction layer, an inner noise reduction layer, and a load-bearing frame, which are sequentially composited from the inside out. The base layer and the gradient noise reduction layer are bonded together with a formaldehyde-free water-based adhesive. The inner noise reduction layer includes a damping plate disposed between the gradient noise reduction layer and the load-bearing frame. The damping plate has a hollow cavity along the length of the composite rock wool board, and the inner side of the hollow cavity is provided with sound insulation cotton.

[0009] Furthermore, the inner side of the damping plate is provided with honeycomb-shaped grooves, the grooves having a diameter of 3-5 mm and a depth of 1-2 mm, for absorbing low-frequency sound waves generated by equipment vibration.

[0010] Furthermore, the gradient noise reduction layer includes a covering layer disposed between the base layer and the inner noise reduction layer, and a first-level noise reduction layer, a second-level noise reduction layer, and a third-level noise reduction layer disposed sequentially inside the covering layer from the inside out, thereby blocking mid-to-high frequency noise layer by layer.

[0011] Furthermore, an isolation net is fixedly connected between the covering layer and the damping plate, and the thickness of the isolation net is 2-3.5mm.

[0012] Furthermore, sound-absorbing cotton with a thickness of 1.5-2mm is fixedly connected between the damping plate and the load-bearing frame.

[0013] Furthermore, the outer surface of the load-bearing frame is coated with an environmentally friendly protective layer, the thickness of which is 0.5-2mm.

[0014] Furthermore, it also includes a three-dimensional structural protective plate, which is fixedly connected to the edges of the base layer, the gradient noise reduction layer, the inner noise reduction layer, and the load-bearing frame.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a sound-insulating, noise-reducing, environmentally friendly, and fire-resistant composite rock wool board, which has the following beneficial effects:

[0017] 1. This utility model achieves precise blocking of noise in different frequency bands through the synergistic design of a gradient noise reduction layer and an inner noise reduction layer. The first-level noise reduction layer (glass wool), the second-level noise reduction layer (polyester fiber), and the third-level noise reduction layer (open-cell foam) of the gradient noise reduction layer attenuate high-frequency noise layer by layer, with a noise reduction of 25-30dB. The damping plate of the inner noise reduction layer, combined with the hollow cavity sound insulation cotton and the honeycomb groove structure, utilizes the principles of damping energy dissipation and resonance sound absorption to increase the noise reduction of low-frequency vibration noise of 20-200Hz to 20-25dB. The overall composite noise reduction reaches 45-55dB, far exceeding the 15-25dB of traditional rock wool boards, and meets the daytime limit requirement of 55dB in the "Environmental Quality Standard for Noise" for industrial areas.

[0018] 2. In this utility model, the environmentally friendly protective layer on the outer surface of the load-bearing frame is made of water-based polyurethane or nano-silicon modified coating, which is degradable, has good environmental performance, and is waterproof and corrosion-resistant, thus protecting the composite rock wool board and extending its lifespan. At the same time, the load-bearing frame is made of galvanized steel or glass fiber reinforced plastic (FRP), and the edges are reinforced with a three-dimensional structure protective plate, which increases the flexural strength of the composite board to 15-20MPa, solving the technical problem of moisture absorption and caking in humid environments. Attached Figure Description

[0019] Figure 1 This is a cross-sectional view of the present invention when disassembled;

[0020] Figure 2 This is a cross-sectional view of the gradient noise reduction layer in this utility model;

[0021] Figure 3 This is a cross-sectional view of the inner noise reduction layer in this utility model;

[0022] Figure 4 This is a cross-sectional view of the present invention.

[0023] In the diagram: 1. Base layer; 2. Gradient noise reduction layer; 201. Covering layer; 202. Primary noise reduction layer; 203. Secondary noise reduction layer; 204. Tertiary noise reduction layer; 3. Isolation net; 4. Inner noise reduction layer; 401. Damping plate; 402. Hollow cavity; 403. Sound insulation cotton; 404. Honeycomb groove; 5. Sound-absorbing cotton; 6. Load-bearing frame; 7. Environmental protection layer; 8. Three-dimensional structure protective panel. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0025] Example

[0026] like Figure 1-4As shown in the figure, an embodiment of the present invention proposes a sound-insulating, noise-reducing, environmentally friendly, and fireproof composite rock wool board, which comprises a base layer 1, a gradient noise reduction layer 2, an inner noise reduction layer 4, and a load-bearing frame 6, which are sequentially composited from the inside out. The base layer 1 is in direct contact with the new energy storage power station equipment, and the base layer 1 and the gradient noise reduction layer 2 are bonded together with a formaldehyde-free water-based adhesive. The gradient noise reduction layer 2 can specifically block mid-to-high frequency noise. The inner noise reduction layer 4 includes a damping plate 401 disposed between the gradient noise reduction layer 2 and the load-bearing frame 6. A hollow cavity 402 is formed in the damping plate 401 along the length direction of the composite rock wool board, and sound insulation cotton 403 is disposed on the inner side of the hollow cavity 402. The inner noise reduction layer 4 focuses on attenuating low-frequency vibration noise, and the load-bearing frame 6 ensures the overall structural strength.

[0027] It should be noted that the formaldehyde-free water-based adhesive achieves a tight bond between the base layer 1 and the gradient noise reduction layer 2 through the physical bonding effect of the polymer, avoiding the release of harmful gases from traditional formaldehyde-containing adhesives. When low-frequency sound waves (20-200Hz) enter the cavity, they resonate with the sound insulation cotton 403. The sound wave energy is converted into heat energy through friction and is consumed. At the same time, the high damping characteristics of the damping plate 401 (such as butyl rubber) can suppress the sound wave transmission of equipment vibration.

[0028] like Figure 3 As shown, in some embodiments, the inner side of the damping plate 401 is provided with a honeycomb groove 404, the groove diameter is 3-5mm and the depth is 1-2mm, which is used to absorb low-frequency sound waves generated by equipment vibration.

[0029] It should be noted that the honeycomb groove 404 can absorb low-frequency sound waves generated by the mechanical vibration of the equipment (such as the vibration noise of transformers and pumps). When the low-frequency sound waves (20-200Hz) act on the surface of the groove, the air column in the groove vibrates with the sound waves and rubs against the groove wall and the sound insulation cotton 403 to dissipate energy. At the same time, the porous structure of the groove increases the reflection path of the sound waves, extends the sound wave propagation distance, and further attenuates the energy.

[0030] like Figure 1 and Figure 2 As shown, in some embodiments, the gradient noise reduction layer 2 includes a covering layer 201 disposed between the base layer 1 and the inner noise reduction layer 4, and a first-level noise reduction layer 202, a second-level noise reduction layer 203 and a third-level noise reduction layer 204 disposed sequentially from the inside to the outside of the covering layer 201, thereby blocking mid-to-high frequency noise layer by layer.

[0031] It should be noted that the primary noise reduction layer 202 (such as glass wool) has a fine fiber diameter and high porosity, which has a significant effect on the air friction dissipation of high-frequency noise (above 2000Hz). The secondary noise reduction layer 203 (such as polyester fiber) has a medium-density porous structure that can effectively absorb mid-frequency noise (200-2000Hz). The tertiary noise reduction layer 204 (such as open-cell foam) has a large-pore structure that performs secondary attenuation on the remaining mid-to-high frequency sound waves and prevents sound wave penetration. The covering layer 201 (such as fiberglass cloth) fixes the position of each noise reduction layer and prevents the material from loosening. This method can block and attenuate mid-to-high frequency noise (above 200Hz, such as fan airflow and electromagnetic noise from electrical components) layer by layer.

[0032] like Figure 1 and Figure 2 As shown, in some embodiments, an isolation net 3 is fixedly connected between the covering layer 201 and the damping plate 401, and the thickness of the isolation net 3 is 2-3.5mm.

[0033] It should be noted that the isolation net 3 can physically separate the gradient noise reduction layer 2 from the inner noise reduction layer 4, block the direct transmission path of sound waves, and enhance the strength of the interlayer structure.

[0034] like Figure 1 and Figure 3 As shown, in some embodiments, sound-absorbing cotton 5 is fixedly connected between the damping plate 401 and the load-bearing frame 6, and the thickness of the sound-absorbing cotton 5 is 1.5-2mm.

[0035] It should be noted that the sound-absorbing cotton 5 can absorb the residual sound waves after they have been attenuated by the inner noise reduction layer 4, thus preventing the sound waves from reflecting off the surface of the load-bearing frame 6 and forming secondary noise, thereby increasing the noise reduction effect.

[0036] like Figure 1 As shown, in some embodiments, the outer surface of the load-bearing frame 6 is coated with an environmentally friendly protective layer 7, the thickness of which is 0.5-2mm.

[0037] It should be noted that the environmentally friendly protective layer 7 can protect the load-bearing frame 6 from moisture and corrosion, while also enhancing its environmental performance.

[0038] like Figure 1 As shown, in some embodiments, a three-dimensional structure protective plate 8 is also included, which is fixedly connected to the edges of the base layer 1, the gradient noise reduction layer 2, the inner noise reduction layer 4 and the load-bearing frame 6.

[0039] It should be noted that the three-dimensional structure protective plate 8 can reinforce the edge structure of the composite plate, prevent interlayer peeling, and at the same time achieve modular and rapid installation, which is convenient for practical use.

[0040] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A sound-insulating, noise-reducing, environmentally friendly, fire-resistant composite rock wool board, characterized in that: It consists of a base layer (1), a gradient noise reduction layer (2), an inner noise reduction layer (4), and a load-bearing frame (6) arranged sequentially from the inside to the outside. The base layer (1) and the gradient noise reduction layer (2) are bonded together with a formaldehyde-free water-based adhesive. The inner noise reduction layer (4) includes a damping plate (401) disposed between the gradient noise reduction layer (2) and the load-bearing frame (6). The damping plate (401) has a hollow cavity (402) opened along the length direction of the composite rock wool board, and the inner side of the hollow cavity (402) is provided with sound insulation cotton (403).

2. The sound-insulating, noise-reducing, environmentally friendly, fire-resistant composite rock wool board according to claim 1, characterized in that: The inner side of the damping plate (401) is provided with a honeycomb groove (404), the groove diameter is 3-5mm and the depth is 1-2mm, which is used to absorb low-frequency sound waves generated by equipment vibration.

3. The sound-insulating, noise-reducing, environmentally friendly, fire-resistant composite rock wool board according to claim 1, characterized in that: The gradient noise reduction layer (2) includes a covering layer (201) disposed between the base layer (1) and the inner noise reduction layer (4), and a first-level noise reduction layer (202), a second-level noise reduction layer (203) and a third-level noise reduction layer (204) disposed sequentially from the inside to the outside of the covering layer (201) to block mid-to-high frequency noise layer by layer.

4. The sound-insulating, noise-reducing, environmentally friendly, fire-resistant composite rock wool board according to claim 3, characterized in that: An isolation net (3) is fixedly connected between the covering layer (201) and the damping plate (401), and the thickness of the isolation net (3) is 2-3.5mm.

5. The sound-insulating, noise-reducing, environmentally friendly, fire-resistant composite rock wool board according to claim 1, characterized in that: The damping plate (401) and the load-bearing frame (6) are fixedly connected with sound-absorbing cotton (5), the thickness of which is 1.5-2mm.

6. The sound-insulating, noise-reducing, environmentally friendly, fire-resistant composite rock wool board according to claim 1, characterized in that: The outer surface of the load-bearing frame (6) is coated with an environmentally friendly protective layer (7), the thickness of which is 0.5-2mm.

7. The sound-insulating, noise-reducing, environmentally friendly, fire-resistant composite rock wool board according to claim 1, characterized in that: It also includes a three-dimensional structure protective plate (8), which is fixedly connected to the edges of the base layer (1), the gradient noise reduction layer (2), the inner noise reduction layer (4) and the load-bearing frame (6).

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