Sound insulation structure of exposed air pipe of coal-fired power plant

Abstract

The utility model provides a sound insulation structure of an exposed air pipe of a coal-fired power plant, which relates to the technical field of sound insulation of the air pipe of the coal-fired power plant and comprises an upper sound insulation plate and a lower sound insulation plate, the lower sound insulation plate is clamped at the lower end of the upper sound insulation plate, and sound insulation layers are arranged on the outer sides of the upper sound insulation plate and the lower sound insulation plate. A galvanized steel plate outer layer, an aerogel composite layer and a metal fiber felt are arranged in the sound insulation layer, a composite sound insulation plate is fixed to the inner side end of the metal fiber felt, an anti-seismic damper is installed on the groove face of the inner side of the composite sound insulation plate, a supporting plate is connected to the side end of the anti-seismic damper, and a rubber sound insulation pad adheres to the plate face of the supporting plate. A primary air pipe is wrapped on the inner side of the rubber sound insulation pad. The problems that in the prior art, upper and lower sound insulation pieces buckled on the outer side of an air pipe are prone to being impacted by air flow in the pipe, resonance and looseness are caused, and the sound insulation effect of the air pipe is affected are solved.

Description

Technical Field

[0001] This utility model relates to the field of sound insulation technology for ventilation ducts in coal-fired power plants, specifically to a sound insulation structure for exposed ventilation ducts in coal-fired power plants. Background Technology

[0002] During operation, the high-speed airflow in exposed ducts of coal-fired power plants generates aerodynamic noise, including impact noise and eddy current noise. This noise affects the surrounding environment and the health of workers. Therefore, sound insulation treatment is required for the exposed ducts of coal-fired power plants. After searching, the existing technology (announcement number: CN202021186408.X) describes a high sound absorption and sound insulation structure for air conditioning ducts. The text describes that "by using the cooperation of the first buckle and the slot, the surface layer and the covering layer are connected into a set by snap-fit, which facilitates the connection of the upper and lower sound insulation components, improves the installation efficiency, and the covering layer uses a conformal structure design and is solidified by molding process, making the connection of the covering layer more secure." However, in the existing technology, the upper and lower sound insulation components snapped on the outside of the duct are easily impacted by the airflow inside the duct, causing resonance and loosening, which affects the sound insulation effect of the duct. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, a sound insulation structure for exposed air ducts in coal-fired power plants is provided to solve the problem that the upper and lower sound insulation components fastened to the outside of the air duct are easily impacted by the airflow inside the duct, causing resonance and loosening, which affects the sound insulation effect of the air duct.

[0004] To achieve the above objectives, a sound insulation structure for exposed air ducts in a coal-fired power plant is provided, comprising: an upper sound insulation panel and a lower sound insulation panel, wherein the lower sound insulation panel is snapped onto the lower end of the upper sound insulation panel.

[0005] The upper and lower sound insulation panels are provided with sound insulation layers on their outer sides. The sound insulation layers contain an outer layer of galvanized steel plate, an aerogel composite layer, and a metal fiber felt. A composite sound insulation board is fixed to the inner end of the metal fiber felt. An anti-vibration damper is installed on the inner groove surface of the composite sound insulation board. A support plate is connected to the side end of the anti-vibration damper. A rubber sound insulation pad is adhered to the surface of the support plate. A primary air duct is wrapped inside the rubber sound insulation pad.

[0006] Furthermore, the left and right ends of the upper sound insulation panel are connected to the lower sound insulation panel via stainless steel buckles, and the upper and lower sound insulation panels are symmetrically snapped together.

[0007] Furthermore, a sponge pad is adhered to the outer side of the rubber sound insulation pad.

[0008] Furthermore, the sponge pads are distributed at the gap between the composite sound insulation board and the rubber sound insulation pads.

[0009] Furthermore, rubber pads are bonded to both ends of the inner side of the composite sound insulation board; and the rubber pads are in contact with the outer surface of the primary air duct.

[0010] Furthermore, an aerogel composite layer is filled between the outer layer of the galvanized steel sheet and the metal fiber felt.

[0011] Furthermore, the seismic damper and support plate are arranged in a triangular ring around the outer end of the primary air duct.

[0012] The beneficial effects of this utility model are as follows: the sound insulation structure of the exposed air duct of the coal-fired power plant utilizes a support plate, an anti-vibration damper, and a rubber sound insulation pad as the inner anti-vibration support structure of the sound insulation panel, which effectively buffers and resists the vibration force generated by the airflow in the primary air duct of the coal-fired power plant, ensuring that the sound insulation panel is stably installed on the outside of the primary air duct. Through the multi-layer sound insulation and noise reduction structure composed of the aerogel composite layer, metal fiber felt, and composite sound insulation board inside the sound insulation panel, it is easy to efficiently block the transmission of noise, while further enhancing the impact resistance of the sound insulation structure of the primary air duct and improving the overall strength of the sound insulation structure of the exposed air duct of the coal-fired power plant. Attached Figure Description

[0013] Figure 1 This is a front view schematic diagram of the sound insulation structure of the exposed air duct of a coal-fired power plant according to an embodiment of the present utility model.

[0014] Figure 2 This is a front view cross-sectional schematic diagram of the sound insulation structure of the exposed air duct of a coal-fired power plant according to an embodiment of the present invention.

[0015] Figure 3 This is a cross-sectional structural diagram of the upper sound insulation panel in an embodiment of the present utility model.

[0016] Figure 4 This is a partial structural diagram of the upper sound insulation panel in an embodiment of the present utility model, viewed from below.

[0017] In the diagram: 1. Upper sound insulation panel; 2. Lower sound insulation panel; 21. Stainless steel buckle; 3. Sound insulation layer; 31. Galvanized steel outer layer; 32. Aerogel composite layer; 33. Metal fiber felt; 4. Composite sound insulation board; 41. Rubber pad; 5. Support plate; 51. Seismic damper; 52. Sponge pad; 6. Rubber sound insulation pad; 7. Primary air duct. Detailed Implementation

[0018] Reference Figures 1 to 4 As shown, this utility model provides a sound insulation structure for exposed air ducts in a coal-fired power plant, including: an upper sound insulation panel 1 and a lower sound insulation panel 2, wherein the lower sound insulation panel 2 is snapped onto the lower end of the upper sound insulation panel 1.

[0019] The outer sides of the upper sound insulation panel 1 and the lower sound insulation panel 2 are provided with a sound insulation layer 3. The sound insulation layer 3 contains a galvanized steel plate outer layer 31, an aerogel composite layer 32 and a metal fiber felt 33. The inner end of the metal fiber felt 33 is fixed with a composite sound insulation board 4. The inner groove surface of the composite sound insulation board 4 is equipped with a seismic damper 51. The side end of the seismic damper 51 is connected to a support plate 5. The surface of the support plate 5 is bonded with a rubber sound insulation pad 6. The inner side of the rubber sound insulation pad 6 is wrapped with a primary air duct 7.

[0020] First, the outer surface of the primary air duct 7 is wrapped with a rubber sound insulation pad 6. Then, the upper sound insulation plate 1 is attached to the outer end of the primary air duct 7. The support plate 5 is then bonded to the outer side of the rubber sound insulation pad 6. The upper sound insulation plate 1 and the lower sound insulation plate 2 are then fastened and fixed with stainless steel buckles 21. This completes the sound insulation and noise reduction treatment of the exposed primary air duct 7 of the coal-fired power plant.

[0021] In this embodiment, the left and right ends of the upper sound insulation panel 1 are connected to the lower sound insulation panel 2 by stainless steel buckles 21, and the upper sound insulation panel 1 and the lower sound insulation panel 2 are symmetrically snapped together.

[0022] As a preferred implementation, the stainless steel tower buckle 21 facilitates quick and easy fastening and installation of the sound insulation panels, so that the upper sound insulation panel 1 and the lower sound insulation panel 2 are wrapped around the outer surface of the primary air duct 7. The outer surfaces of the upper sound insulation panel 1 and the lower sound insulation panel 2 are coated with a photocatalytic TiO2 coating, which automatically decomposes the attached dust through rainwater, reducing the frequency of maintenance.

[0023] In this embodiment, a sponge pad 52 is adhered to the outer side of the rubber sound insulation pad 6. The sponge pads 52 are distributed at the gap between the composite sound insulation board 4 and the rubber sound insulation pad 6. Rubber pads 41 are adhered to both ends of the inner side of the composite sound insulation board 4; and the rubber pads 41 are in contact with the outer surface of the primary air duct 7. An aerogel composite layer 32 is filled between the outer layer 31 of the galvanized steel plate and the metal fiber felt 33. The seismic damper 51 and the support plate 5 are triangularly arranged and supported at the outer end of the primary air duct 7.

[0024] In a preferred embodiment, the sponge pad 52 fills the space between the composite sound insulation panel 4 and the rubber sound insulation pad 6. The triangularly distributed shock absorbers 51 and support plates 5 buffer and resist the vibrations generated by the airflow within the primary air duct 7 of the coal-fired power plant, ensuring the sound insulation panels are stably installed on the outside of the duct. The aerogel composite layer 32, composed of aerogel and glass fiber, provides sound insulation while enhancing its toughness. The metal fiber felt 33 resists the scouring force of the airflow within the primary air duct 7, and the galvanized steel outer layer 31 provides long-term rust protection through its zinc coating, improving the service life of the exposed sound insulation panels.

[0025] This utility model's sound insulation structure for exposed air ducts in coal-fired power plants effectively solves the problem in existing technologies where the upper and lower sound insulation components fastened to the outside of the air duct are easily impacted by the airflow inside the duct, causing resonance and loosening that affects the sound insulation effect. It effectively buffers and resists the vibration force generated by the airflow inside the primary air duct of a coal-fired power plant, ensuring that the sound insulation panels are stably installed on the outside of the primary air duct, facilitating efficient noise blocking. At the same time, it further enhances the impact resistance of the primary air duct sound insulation structure and improves the overall strength of the sound insulation structure for exposed air ducts in coal-fired power plants. It is suitable for sound insulation structures of exposed air ducts in coal-fired power plants.

Claims

1. A sound insulation structure for exposed air ducts in a coal-fired power plant, comprising: An upper soundproof panel (1) and a lower soundproof panel (2), wherein the lower end of the upper soundproof panel (1) is snapped with the lower soundproof panel (2), characterized in that: The upper sound insulation panel (1) and the lower sound insulation panel (2) are provided with a sound insulation layer (3) on their outer side. The sound insulation layer (3) contains a galvanized steel plate outer layer (31), an aerogel composite layer (32) and a metal fiber felt (33). A composite sound insulation board (4) is fixed to the inner end of the metal fiber felt (33). An anti-vibration damper (51) is installed on the inner groove surface of the composite sound insulation board (4). A support plate (5) is connected to the side end of the anti-vibration damper (51). A rubber sound insulation pad (6) is bonded to the surface of the support plate (5). A primary air duct (7) is wrapped inside the rubber sound insulation pad (6).

2. The sound insulation structure for exposed air ducts in a coal-fired power plant according to claim 1, characterized in that, The upper sound insulation panel (1) is connected to the lower sound insulation panel (2) at its left and right sides by stainless steel buckles (21), and the upper sound insulation panel (1) and the lower sound insulation panel (2) are symmetrically snapped together.

3. The sound insulation structure for exposed air ducts in a coal-fired power plant according to claim 1, characterized in that, The outer side of the rubber sound insulation pad (6) is bonded with a sponge pad (52).

4. The sound insulation structure for exposed air ducts in a coal-fired power plant according to claim 3, characterized in that, The sponge pad (52) is distributed at the gap between the composite sound insulation board (4) and the rubber sound insulation pad (6).

5. The sound insulation structure for exposed air ducts in a coal-fired power plant according to claim 1, characterized in that, The inner side of the composite sound insulation board (4) is bonded with rubber pads (41) at both ends; and the rubber pads (41) are in contact with the outer surface of the primary air duct (7).

6. The sound insulation structure for exposed air ducts in a coal-fired power plant according to claim 1, characterized in that, An aerogel composite layer (32) is filled between the outer layer (31) of the galvanized steel sheet and the metal fiber felt (33).

7. The sound insulation structure for exposed air ducts in a coal-fired power plant according to claim 1, characterized in that, The seismic damper (51) and the support plate (5) are arranged in a triangular ring around the outer end of the primary air duct (7).

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