Noise reduction structure for concrete wall of nuclear power plant, concrete wall and nuclear power plant
By installing staggered sound-absorbing panels on the concrete walls of nuclear power plants, the problem of poor sound absorption in existing technologies has been solved, achieving effective noise absorption of vibrating equipment and improving noise reduction performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG ELECTRIC POWER ENG CONSULTING INST CORP
- Filing Date
- 2025-06-30
- Publication Date
- 2026-06-09
Smart Images
Figure CN224338442U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of noise reduction technology, specifically relating to a noise reduction structure for concrete walls in nuclear power plants, the concrete wall, and the nuclear power plant. Background Technology
[0002] With social progress and the development and utilization of nuclear energy, the construction of nuclear power plants is constantly increasing. Among them, the equipment in nuclear power plants vibrates when it is working, and the vibration of the equipment generates low- and medium-frequency radiated noise. The generation of low- and medium-frequency radiated noise will bring significant noise to the control room and other office areas in the nuclear power plant, affecting work.
[0003] Currently, sound absorption and noise reduction are achieved by installing sound insulation panels and sound-absorbing panels on concrete walls using structures such as keels. Although honeycomb sound-absorbing panels are used to improve the sound absorption effect, the sound absorption of the current noise reduction structure cannot meet the requirements due to the different and relatively large vibration levels of the equipment in the nuclear power plant. The noise reduction effect is not obvious. Utility Model Content
[0004] To address the aforementioned problems, this invention proposes a noise reduction structure for concrete walls in nuclear power plants, along with the concrete wall and the nuclear power plant itself. The sound-absorbing panel assembly comprises multiple sound-absorbing panels, each with multiple sound-absorbing holes. The sound-absorbing holes on adjacent panels are staggered. Noise entering through the holes of the first panel must change direction before entering the holes of the second panel, increasing the number of noise absorption cycles and the noise's travel path. This effectively absorbs noise from equipment with varying degrees of vibration, particularly those with significant vibration, thus meeting sound absorption requirements and improving noise reduction.
[0005] According to some embodiments, the first solution of this utility model provides a noise reduction structure for concrete walls in nuclear power plants, adopting the following technical solution:
[0006] A noise reduction structure for concrete walls in nuclear power plants includes a first connecting frame, a sound insulation plate disposed on the first connecting frame, a second connecting frame disposed on the sound insulation plate, and a sound-absorbing plate assembly disposed on the second connecting frame.
[0007] The sound-absorbing panel assembly includes multiple sound-absorbing panels, each of which has multiple sound-absorbing holes, with the sound-absorbing holes on each adjacent pair of sound-absorbing panels being staggered.
[0008] Furthermore, the first connecting frame is mounted on the concrete wall via a second connecting member, which is a bolt.
[0009] Furthermore, the second connecting component is an expansion bolt.
[0010] Furthermore, the sound insulation panel is mounted on the first connecting frame via a damping element.
[0011] Furthermore, the sound-absorbing panel assembly is mounted on the sound insulation panel via a second connecting frame.
[0012] Furthermore, the second connecting frame is a frame structure, and sound insulation material is filled inside the second connecting frame.
[0013] Furthermore, the sound-absorbing panel assembly includes a first sound-absorbing panel disposed on the second connecting frame, a second sound-absorbing panel disposed on the first sound-absorbing panel via a first connecting member, and a third sound-absorbing panel disposed on the second sound-absorbing panel via a first connecting member.
[0014] Furthermore, the sound-absorbing hole is a round hole or a conical hole.
[0015] According to some embodiments, the second aspect of this utility model provides a concrete wall for a nuclear power plant, employing the following technical solution:
[0016] A nuclear power plant concrete wall includes a concrete wall and a noise reduction structure for a nuclear power plant concrete wall, as described in the first aspect, disposed on the concrete wall.
[0017] According to some embodiments, the third solution of this utility model provides a nuclear power plant, which adopts the following technical solution:
[0018] A nuclear power plant includes concrete walls and noise reduction structures for nuclear power plant concrete walls, as described in the first aspect, disposed on the concrete walls.
[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0020] This invention features a sound-absorbing panel assembly mounted on a soundproof panel via a second connecting frame. The assembly comprises multiple sound-absorbing panels, each with multiple sound-absorbing holes. The holes on adjacent panels are staggered. Noise entering through the holes of the first panel must change direction before entering the holes of the second panel, increasing the number of noise absorption cycles and the noise's travel path. This design effectively absorbs noise from equipment with varying degrees of vibration, particularly those with significant vibration, thus meeting sound absorption requirements and improving noise reduction. Attached Figure Description
[0021] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.
[0022] Figure 1 This is a schematic diagram of the noise reduction structure of Embodiment 1 of this utility model;
[0023] Figure 2 This is a schematic diagram of the sound-absorbing hole layout of Embodiment 1 of this utility model;
[0024] Figure 3 This is a schematic diagram of the sound-absorbing hole structure of Embodiment 1 of this utility model;
[0025] Figure 4 This is a schematic diagram of the sound-absorbing hole layout in Embodiment 2 of this utility model;
[0026] Figure 5 This is a schematic diagram of the sound-absorbing hole structure of Embodiment 2 of this utility model;
[0027] The components are: 1. Concrete wall; 2. First connecting frame; 3. Sound insulation board; 4. Second connecting frame; 5. Sound-absorbing board assembly; 501. First sound-absorbing board; 502. Second sound-absorbing board; 503. Third sound-absorbing board; 504. Sound-absorbing hole; 505. First connector; 6. Second connector; 7. Damping component. Detailed Implementation
[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0029] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.
[0030] Example 1:
[0031] like Figure 1 As shown, this embodiment provides a noise reduction structure for concrete walls in nuclear power plants, including a concrete wall 1, a first connecting frame 2, a sound insulation board 3, a second connecting frame 4, a sound-absorbing board assembly 5, a second connecting member 6, and a damping member 7, etc.
[0032] like Figure 1 As shown, the first connecting frame 2 can adopt a keel, steel frame, or other structure, and can be detachably or non-detachably fixed to the concrete wall 1 by bolts, screws, or other means. The first connecting frame 2 serves as the support for the entire noise reduction structure on the concrete wall 1.
[0033] A sound insulation panel 3 is installed on the first connecting frame 2 for noise isolation; one type of sound insulation panel 3 is mainly made of high-density boards such as gypsum board, metal damping board and / or rubber composite board, as well as sound insulation materials including sound insulation felt and / or sound insulation cotton. The sound insulation panel 3 can use conventional sound insulation materials, which will not be described in detail here.
[0034] The second connecting frame 4 is installed on the sound insulation panel 3 by welding, bolting, or other connection methods. Optionally, the second connecting frame 4 is a frame structure, such as a keel or steel frame, and the second connecting frame 4 is filled with sound insulation felt and / or sound insulation cotton and other sound insulation materials, which further enhances the sound absorption and sound insulation effect.
[0035] like Figure 1 As shown, the second connecting frame 4 is provided with a sound-absorbing panel group 5 by welding, bolting or other connection methods.
[0036] like Figure 2 As shown, the sound-absorbing panel group 5 includes multiple sound-absorbing panels, each with multiple sound-absorbing holes 504. The sound-absorbing holes 504 on each adjacent sound-absorbing panel are staggered. The multiple sound-absorbing holes 504 on each sound-absorbing panel can be honeycomb-shaped. Specifically, each sound-absorbing panel has multiple sound-absorbing holes 504, and the sound-absorbing holes 504 on each adjacent sound-absorbing panel are staggered. After noise enters from the multiple sound-absorbing holes 504 of the first sound-absorbing panel, it needs to change direction before entering the multiple sound-absorbing holes 504 of the second sound-absorbing panel. This increases the number of noise absorption cycles and the noise travel path, which can meet the sound absorption requirements for noise generated by equipment with different vibration levels and larger vibration levels, thus improving the noise reduction effect.
[0037] Optional, such as Figure 2 As shown, in one embodiment, the sound-absorbing panel assembly 5 includes a first sound-absorbing panel 501 disposed on the second connecting frame 4, a second sound-absorbing panel 502 disposed on the first sound-absorbing panel 501 via a first connecting member 505, and a third sound-absorbing panel 503 disposed on the second sound-absorbing panel 502 via a first connecting member 505. The arrangement of the three sound-absorbing panels ensures a good sound absorption effect.
[0038] Optionally, sound-absorbing materials such as glass wool and rock wool can be placed inside the sound-absorbing holes 504 by means of bonding or other methods to further ensure the sound absorption effect.
[0039] The sound-absorbing hole 504 is a round hole, which facilitates the entry of noise; the first connecting member 505 can be a structure such as screws or bolts, which facilitates the disassembly and assembly of the first sound-absorbing plate 501, the second sound-absorbing plate 501 and the third sound-absorbing plate 501 in the sound-absorbing plate group 5.
[0040] like Figure 1As shown, the first connecting frame 2 is mounted on the concrete wall 1 via a second connecting member 6; the second connecting member 6 is a bolt, which facilitates assembly and disassembly. In one embodiment, optionally, the second connecting member 6 is an expansion bolt, which improves the connection strength between the first connecting frame 2 and the concrete wall 1, ensures the stability of the entire noise reduction structure, and avoids the risk of the noise reduction structure detaching from the concrete wall 1 under vibration.
[0041] like Figure 1 As shown, the sound insulation plate 3 is mounted on the first connecting frame 1 by a damping component 7, which improves the vibration resistance and vibration isolation effect and further avoids the risk of the noise reduction structure separating from the concrete wall 1 due to vibration. The damping component 7 can be a spring, a damping damper or other damper. The two ends of the damping component 7 can be mounted on the first connecting frame 2 and the sound insulation plate 3 respectively by welding or bolt connection.
[0042] Example 2:
[0043] This embodiment provides a noise reduction structure for concrete walls in nuclear power plants, such as... Figure 3 and Figure 4 As shown, unlike Example 1, the sound-absorbing hole 504 in this example is a conical hole. By changing the propagation path of noise through the conical hole and by the effect of noise diffusion within the conical hole, the sound absorption effect is further improved.
[0044] In one embodiment, the tapered openings of the plurality of sound-absorbing holes 504 face one direction, facilitating the entry of noise into the sound-absorbing holes 504.
[0045] In another embodiment, the conical openings of the multiple sound-absorbing holes 504 on adjacent sound-absorbing panels face opposite directions, further increasing the difficulty of noise propagation and ensuring the noise reduction effect.
[0046] Example 3:
[0047] This embodiment provides a nuclear power plant concrete wall, including a concrete wall 1 and a noise reduction structure for the nuclear power plant concrete wall, as described in Embodiment 1 or Embodiment 2, disposed on the concrete wall 1.
[0048] Example 4:
[0049] This embodiment provides a nuclear power plant, including a concrete wall 1 and a noise reduction structure for the concrete wall of a nuclear power plant, as described in Embodiment 1 or Embodiment 2, disposed on the concrete wall 1.
[0050] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. 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 noise reduction structure for concrete walls in nuclear power plants, characterized in that, It includes a first connecting frame (2), a sound insulation plate (3) disposed on the first connecting frame (2), a second connecting frame (4) disposed on the sound insulation plate (3), and a sound-absorbing plate assembly (5) disposed on the second connecting frame (4); The sound-absorbing panel group (5) includes multiple sound-absorbing panels, each of which has multiple sound-absorbing holes (504), and the sound-absorbing holes (504) on each adjacent two sound-absorbing panels are staggered.
2. The noise reduction structure for concrete walls in nuclear power plants as described in claim 1, characterized in that, The first connecting frame (2) is mounted on the concrete wall (1) via a second connecting member (6); the second connecting member (6) is a bolt.
3. The noise reduction structure for concrete walls in nuclear power plants as described in claim 2, characterized in that, The second connector (6) is an expansion bolt.
4. The noise reduction structure for concrete walls in nuclear power plants as described in claim 1, characterized in that, The sound insulation plate (3) is mounted on the first connecting frame (2) via a damping element (7).
5. The noise reduction structure for concrete walls in nuclear power plants as described in claim 1, characterized in that, The sound-absorbing panel assembly (5) is mounted on the sound insulation panel (3) via a second connecting frame (4).
6. The noise reduction structure for concrete walls in nuclear power plants as described in claim 5, characterized in that, The second connecting frame (4) is a frame mechanism, and the second connecting frame (4) is filled with sound insulation material.
7. The noise reduction structure for concrete walls in nuclear power plants as described in claim 5, characterized in that, The sound-absorbing panel assembly (5) includes a first sound-absorbing panel (501) disposed on the second connecting frame (4), a second sound-absorbing panel (502) disposed on the first sound-absorbing panel (501) via a first connecting member (505), and a third sound-absorbing panel (503) disposed on the second sound-absorbing panel (502) via a first connecting member (505).
8. The noise reduction structure for concrete walls in nuclear power plants as described in claim 1, characterized in that, The sound-absorbing hole (504) is a round hole or a conical hole.
9. A concrete wall for a nuclear power plant, characterized in that, Includes a concrete wall (1) and a noise reduction structure for a nuclear power plant concrete wall as described in any one of claims 1-8, disposed on the concrete wall (1).
10. A nuclear power plant, characterized in that, Includes a concrete wall (1) and a noise reduction structure for a nuclear power plant concrete wall as described in any one of claims 1-8, disposed on the concrete wall (1).