Noise reduction metamaterial double-layer sound insulation board of gas turbine

Abstract

The utility model discloses a gas turbine noise reduction metamaterial double-layer sound insulation board which comprises a first single-layer board, a second single-layer board, a first sound insulation board and a second sound insulation board. The second single-layer plate is provided with a plurality of strip-shaped mass units, the second single-layer plate is connected with the first single-layer plate through an adhesive, and the block-shaped mass units and the strip-shaped mass units are oppositely arranged; and the composite material layer covers the outer sides of the first single-layer plate and the second single-layer plate. The first single-layer plate and the second single-layer plate are connected through the adhesive, and the block-shaped mass units and the strip-shaped mass units are oppositely arranged, so that an air layer is formed between the first single-layer plate and the second single-layer plate, and sound needs to be reflected and attenuated for multiple times between the first single-layer plate and the second single-layer plate; meanwhile, the sound is influenced and reflected by the block-shaped mass units and the strip-shaped mass units, so that the sound is further attenuated, the outermost composite material layer can convert mechanical energy of sound waves into heat energy to be dissipated, introduction of noise is further reduced, and good sound insulation performance is kept.

Description

Technical Field

[0001] This utility model relates to the field of gas turbine equipment technology, and in particular to a double-layer sound insulation board for noise reduction of gas turbines. Background Technology

[0002] Gas turbines generate significant noise during operation, posing a major challenge to their widespread application. From the perspective of noise sources, high-speed rotating components within the gas turbine, such as the compressor and turbine, generate aerodynamic noise. The flow, separation, and interference of high-speed airflow on the blade surfaces produce intense turbulent noise. Simultaneously, pressure fluctuations generated during combustion within the combustion chamber are also a significant source of noise, exhibiting broadband characteristics.

[0003] In practical applications, gas turbines are commonly used in power plants and marine propulsion. In power plants, the high noise levels generated by gas turbines can harm the surrounding environment and workers, impacting the quality of life for nearby residents. For ships, gas turbine noise can interfere with the normal operation of onboard communication systems and other equipment, and increase the risk of the ship being detected by enemy sonar. Therefore, research and improvement of gas turbine noise reduction technology are urgently needed. Utility Model Content

[0004] This invention provides a gas turbine noise reduction metamaterial double-layer sound insulation board, which aims to solve at least one of the technical problems existing in the prior art.

[0005] The technical solution of this utility model relates to a double-layer sound insulation panel for noise reduction of gas turbines, comprising:

[0006] The first single-layer plate has multiple block-shaped mass units;

[0007] The second single-layer plate is provided with multiple strip-shaped mass units. The second single-layer plate is connected to the first single-layer plate by adhesive, and the block-shaped mass units and the strip-shaped mass units are arranged facing each other.

[0008] A composite material layer is applied to the outer sides of the first and second single-layer plates.

[0009] According to some embodiments of the present invention, the first single-layer plate is formed by connecting multiple aluminum plate units with adhesive, and each aluminum plate unit is provided with a block-shaped mass unit.

[0010] According to some embodiments of the present invention, the block mass unit includes a hexagonal mass block and four cylindrical mass blocks. The hexagonal mass block is disposed at the center of the aluminum plate unit, and the four cylindrical mass blocks are stacked and distributed at the four corners of the aluminum plate unit.

[0011] According to some embodiments of the present invention, the second single-layer plate is formed by connecting multiple aluminum plate units with adhesive, and each aluminum plate unit is provided with a strip-shaped mass unit.

[0012] According to some embodiments of the present invention, the strip-shaped mass unit includes a plurality of strip-shaped mass blocks, and the plurality of strip-shaped mass blocks are arranged in a linear array on the aluminum plate unit.

[0013] According to some embodiments of this utility model, the hexagonal mass block, the cylindrical mass block, and the strip-shaped mass block are all connected to the aluminum plate unit by adhesive.

[0014] According to some embodiments of this utility model, the thickness of the hexagonal mass block, the cylindrical mass block, and the strip-shaped mass block is greater than the thickness of the aluminum plate unit.

[0015] According to some embodiments of the present invention, the composite material layer is a carbon fiber resin layer.

[0016] The beneficial effects of this utility model are as follows:

[0017] 1. By connecting the first and second single-layer boards with adhesive and setting the block mass units and strip mass units facing each other, an air layer is formed between the first and second single-layer boards. The sound needs to undergo multiple reflections and attenuation between the first and second single-layer boards, and is also affected and reflected by the block mass units and strip mass units, which further attenuates the sound. The outermost composite material layer can convert the mechanical energy of the sound wave into heat energy and dissipate it, further reducing the transmission of noise and maintaining good sound insulation performance. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of the aluminum plate unit of the first single-layer plate according to an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the aluminum plate unit of the second single-layer plate according to an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the first single-layer plate according to an embodiment of the present utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the second single-layer plate according to an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the structure of the double-layer sound insulation board according to an embodiment of the present invention.

[0023] Icon labels:

[0024] Cylindrical mass block 1;

[0025] Hexagonal mass block 2;

[0026] Aluminum plate unit 3;

[0027] 4 strip-shaped mass blocks;

[0028] Composite material layer 5. Detailed Implementation

[0029] The following will describe several embodiments of the present invention, including embodiments corresponding to the accompanying drawings. It should be understood that the drawings are used to assist in understanding the technical features and technical solutions of the present invention, and should not be construed as limiting the scope of protection of the present invention.

[0030] The following will provide a clear and complete description of the concept, specific structure, and technical effects of this utility model in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, solution, and effects of this utility model. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0031] It should be noted that, unless otherwise explicitly defined, when a feature is referred to as "fixed," "connected," "installed," or "set" on another feature, it can be "fixed," "connected," "installed," or "set" directly on the other feature, or it can be "fixed," "connected," "installed," or "set" on the other feature indirectly. The terms "fixed," "connected," "installed," and "set" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0032] It should be noted that the descriptions of orientations or positional relationships indicated by terms such as up, down, left, right, top, bottom, front, back, inside, and outside used in this utility model are based on the orientations or positional relationships indicated by the accompanying drawings or embodiments. They are only for the purpose of facilitating the description of this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] It should be noted that the term "and / or" used in this utility model includes any combination of one or more related listed items, "several" means one or more, "multiple" means at least two, "greater than", "less than", "exceeding" are understood to exclude the number itself, and "above", "below", "within" are understood to include the number itself.

[0034] It should be noted that the use of "first" and "second" in this utility model is only for the purpose of distinguishing technical features, and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or implicitly indicating the order of the technical features indicated.

[0035] It should be noted that, unless otherwise expressly defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this specification is for the purpose of describing particular embodiments only and not for limiting the scope of the invention.

[0036] Reference Figures 1 to 5 The technical solution of this utility model relates to a gas turbine noise reduction metamaterial double-layer sound insulation board, including a first single-layer board with multiple block mass units; a second single-layer board with multiple strip mass units, the second single-layer board is connected to the first single-layer board by an adhesive, and the block mass units and strip mass units are arranged facing each other; a composite material layer 5 is wrapped around the outside of the first single-layer board and the second single-layer board.

[0037] The application of the above-mentioned gas turbine noise reduction metamaterial double-layer sound insulation board has at least the following beneficial effects: by connecting the first single-layer board and the second single-layer board with adhesive and setting the block mass unit and the strip mass unit facing each other, an air layer is formed between the first single-layer board and the second single-layer board. The sound needs to undergo multiple reflections and attenuation between the first single-layer board and the second single-layer board, and is also affected and reflected by the block mass unit and the strip mass unit, which further attenuates the sound. The outermost composite material layer 5 can convert the mechanical energy of the sound wave into heat energy and dissipate it, further reducing the transmission of noise and maintaining good sound insulation performance.

[0038] According to some embodiments of this utility model, the first single-layer plate is formed by connecting multiple aluminum plate units 3 with adhesive, and each aluminum plate unit 3 is provided with a block-shaped mass unit. The second single-layer plate is formed by connecting multiple aluminum plate units 3 with adhesive, and each aluminum plate unit 3 is provided with a strip-shaped mass unit. Multiple aluminum plate units 3 are combined in a periodic array to form the first single-layer plate and the second single-layer plate. The adhesive is easy to use and can connect multiple aluminum plate units 3 at the same time. The stress distribution is uniform. When the gas turbine is running, resonance will occur. The adhesive can form a certain shock absorption and buffering effect.

[0039] According to some embodiments of this utility model, the block mass unit includes a hexagonal mass block 2 and four cylindrical mass blocks 1. The hexagonal mass block 2 is located at the center of the aluminum plate unit 3, and the four cylindrical mass blocks 1 are stacked and distributed at the four corners of the aluminum plate unit 3. The strip mass unit includes multiple strip mass blocks 4, which are arranged in a linear array on the aluminum plate unit 3. The hexagonal mass block 2, cylindrical mass block 1, and strip mass blocks 4 are all connected to the aluminum plate unit 3 by adhesive. The array arrangement can make the overall stress distribution of the first single-layer plate and the second single-layer plate uniform, and can make the noise attenuation effect of different positions consistent, avoiding the occurrence of new noise due to uneven noise attenuation.

[0040] According to some embodiments of this utility model, the thickness of the hexagonal mass block 2, the cylindrical mass block 1, and the strip-shaped mass block 4 is greater than the thickness of the aluminum plate unit 3, which makes it more difficult for the various mass blocks to vibrate, allowing more sound to be reflected and improving the sound insulation.

[0041] According to some embodiments of this utility model, the composite material layer 5 is a carbon fiber resin layer. Gas turbines operate at high temperatures and are prone to impacts during actual operation. The carbon fiber resin layer is heat-resistant, high-strength, and also possesses good impact resistance.

[0042] It should be noted that in this specification, terms such as "one embodiment", "some embodiments", "basic embodiment", and "extended embodiment" may be used to describe several embodiments of the present invention, and the specific features, structures, materials or characteristics of the several embodiments may be combined in accordance with the principles and spirit of the present invention.

[0043] Although some embodiments of the present invention have been shown and described in this specification, the present invention should not be limited to the above embodiments. As long as they achieve the technical effects of the present invention by the same or equivalent means, any changes, modifications, equivalent substitutions and equivalent variations of these embodiments within the spirit and principles of this disclosure, without departing from the principles and purpose of the present invention, should be included within the scope of protection of this disclosure and should be considered to fall within the protection scope of the present invention.

Claims

1. A double-layer sound insulation panel for noise reduction in gas turbines, characterized in that, include: The first single-layer plate has multiple block-shaped mass units; The second single-layer plate is provided with multiple strip-shaped mass units. The second single-layer plate is connected to the first single-layer plate by adhesive, and the block-shaped mass units and the strip-shaped mass units are arranged facing each other. A composite material layer is applied to the outer sides of the first and second single-layer plates.

2. A gas turbine noise-reducing metamaterial double-layer soundproof panel according to claim 1, characterized in that, The first single-layer plate is composed of multiple aluminum plate units connected by adhesive, and each aluminum plate unit is provided with a block-shaped mass unit.

3. A gas turbine noise-reducing metamaterial double-layer soundproof panel according to claim 2, characterized in that, The block mass unit includes a hexagonal mass block and four cylindrical mass blocks. The hexagonal mass block is located at the center of the aluminum plate unit, and the four cylindrical mass blocks are stacked and distributed at the four corners of the aluminum plate unit.

4. A gas turbine noise-reducing metamaterial double-layer soundproof panel according to claim 3, characterized in that, The second single-layer plate is formed by connecting multiple aluminum plate units with adhesive, and each aluminum plate unit is provided with a strip-shaped mass unit.

5. A gas turbine noise-reducing metamaterial double-layer soundproof panel according to claim 4, characterized in that, The strip-shaped mass unit includes multiple strip-shaped mass blocks, which are arranged in a linear array on the aluminum plate unit.

6. A gas turbine noise-reducing metamaterial double-layer soundproof panel according to claim 5, characterized in that, The hexagonal mass block, the cylindrical mass block, and the strip-shaped mass block are all connected to the aluminum plate unit by adhesive.

7. A gas turbine noise-reducing metamaterial double-layer soundproof panel according to claim 5, characterized in that, The thickness of the hexagonal mass block, the cylindrical mass block, and the strip-shaped mass block is greater than the thickness of the aluminum plate unit.

8. A gas turbine noise-reducing metamaterial double-layer soundproof panel according to claim 1, characterized in that, The composite material layer is a carbon fiber resin layer.

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