Silencer for gas noise

Abstract

The utility model discloses a silencer for gas noise, and relates to the technical field of silencing devices. Comprising an outer wall provided with a plurality of outer wall through holes, a flange, an end cover flange, a first silencing pipe provided with a plurality of first silencing holes, a second silencing pipe provided with a plurality of second silencing holes, a first novel composite through hole metal acoustic panel, a corrugated filter element filter filling net, a water absorption layer and a second novel composite through hole metal acoustic panel. According to the silencer, the silencing effect is improved, and the silencing material is convenient to replace and maintain.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sound attenuation devices, in particular to a muffler for gas noise. BACKGROUND

[0002] In the gas charging / discharging tool, when the high-pressure gas is charged and discharged through the pipeline, due to the high flow rate and the velocity shear and impact between the surrounding static or moving fluid, a relatively high noise is often caused, which is called shear noise (i.e. gas noise). Such noise will increase with the increase of the gas outflow speed.

[0003] In the existing box environment, the noise suppression method has the problems of high cost, low noise reduction effect, unsuitable for various working conditions, inconvenient replacement and maintenance, etc. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the present application is to provide a muffler for gas noise, which improves the sound attenuation effect and facilitates the replacement and maintenance of the sound attenuation material.

[0005] To achieve the above purpose, the present application provides a muffler for gas noise, comprising: an outer wall provided with a plurality of outer wall through holes, a flange, an end cover flange, a first sound attenuation pipe provided with a plurality of first sound attenuation holes, a second sound attenuation pipe provided with a plurality of second sound attenuation holes, a first novel composite through-hole metal sound absorption plate, a corrugated filter core filtering and filling net, a water absorption layer and a second novel composite through-hole metal sound absorption plate; wherein one end of the outer wall is connected with the flange, and the other end of the outer wall is connected with the end cover flange, after connection, the flange, the outer wall and the end cover flange form a shell with a containing cavity; the first sound attenuation pipe is arranged in the containing cavity, one end of the first sound attenuation pipe is connected with the flange, and the other end of the first sound attenuation pipe is connected with the end cover flange; the second sound attenuation pipe is arranged in the containing cavity, one end of the second sound attenuation pipe is connected with the flange, and the other end of the second sound attenuation pipe is connected with the end cover flange, and the second sound attenuation pipe is located between the first sound attenuation pipe and the outer wall; the first novel composite through-hole metal sound absorption plate is arranged between the first sound attenuation pipe and the second sound attenuation pipe; the corrugated filter core filtering and filling net is arranged between the second sound attenuation pipe and the outer wall, the water absorption layer is arranged between the corrugated filter core filtering and filling net and the outer wall, and the second novel composite through-hole metal sound absorption plate is arranged between the water absorption layer and the outer wall.

[0006] As above, wherein the flange is provided with a first stop limit groove, and one end of the outer wall is clamped in the first stop limit groove.

[0007] As above, wherein the end cover flange is provided with a second stop limit groove, and the other end of the outer wall is clamped in the second stop limit groove.

[0008] The one end of the first muffler pipe is welded with the flange.

[0009] The other end of the first muffler pipe is provided with a pressing bolt, which is connected with a pressing nut after penetrating through the end cover flange.

[0010] The water absorption layer is a chamois leather.

[0011] The first novel composite through-hole metal sound absorption plate comprises: a first sound absorption plate body; the top surface of the first sound absorption plate body is provided with a plurality of first grooves, and the bottom of each first groove is provided with a first through hole; the bottom surface of the first sound absorption plate body is provided with a plurality of second grooves, and the bottom of each second groove is provided with a second through hole; and the plurality of first grooves and the plurality of second grooves are uniformly and spacedly arranged.

[0012] The first groove is a triangular pyramid-shaped groove, and the first through hole is arranged at the vertex position of the triangular pyramid-shaped groove; the first through hole is elliptical; the second groove is a triangular pyramid-shaped groove, and the second through hole is arranged at the vertex position of the triangular pyramid-shaped groove; and the second through hole is elliptical.

[0013] The second novel composite through-hole metal sound absorption plate comprises: a second sound absorption plate body; the top surface of the second sound absorption plate body is provided with a plurality of third grooves, and the bottom of each third groove is provided with a third through hole; the bottom surface of the second sound absorption plate body is provided with a plurality of fourth grooves, and the bottom of each fourth groove is provided with a fourth through hole; and the plurality of third grooves and the plurality of fourth grooves are uniformly and spacedly arranged.

[0014] The third groove is a triangular pyramid-shaped groove, and the third through hole is arranged at the vertex position of the triangular pyramid-shaped groove; the third through hole is elliptical; the fourth groove is a triangular pyramid-shaped groove, and the fourth through hole is arranged at the vertex position of the triangular pyramid-shaped groove; and the fourth through hole is elliptical.

[0015] The beneficial effects realized by the present application are as follows:

[0016] (1) The muffler for gas noise of the present application has strong practicability, can make the air flow from the gas source change direction multiple times in the muffler for gas noise, prolong the time of the air flow staying in the muffler for gas noise, and thus make the noise be absorbed by the sound absorption material multiple times in the muffler for gas noise, thereby improving the sound absorption effect.

[0017] (2) The muffler for gas noise of the present application is convenient for replacing and maintaining the sound absorption material. BRIEF DESCRIPTION OF DRAWINGS

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 A schematic diagram of one embodiment of a silencer for gas noise;

[0020] Figure 2 This is a schematic diagram of the structure of one embodiment of a novel composite through-hole metal sound-absorbing panel, wherein... Figure 2 Image (a) is a top view of the first novel composite perforated metal sound-absorbing panel. Figure 2 (b) is a cross-sectional view of the first novel composite through-hole metal sound-absorbing plate;

[0021] Figure 3 This is a schematic diagram of one embodiment of a chamois towel, wherein, Figure 3 Image (a) is a top view of the suede towel. Figure 3 (b) in the image is the right view of the chamois cloth. Detailed Implementation

[0022] 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, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1-3As shown, this application provides a silencer for gas noise, comprising: an outer wall 1 with multiple external through holes, a flange 2, an end cap flange 3, a first silencer pipe 4 with multiple first silencer holes, a second silencer pipe 5 with multiple second silencer holes, a first novel composite through-hole metal sound-absorbing plate 6, a corrugated filter element filter filling mesh 7, a water-absorbing layer 8, and a second novel composite through-hole metal sound-absorbing plate 9. One end of the outer wall 1 is connected to the flange 2, and the other end of the outer wall 1 is connected to the end cap flange 3. After connection, the flange 2, the outer wall 1, and the end cap flange 3 constitute a shell with a receiving cavity. The first silencer pipe 4 is disposed within the receiving cavity, with one end connected to the flange 2 and the other end connected to the end cap flange 3. The second silencer pipe 5 is disposed within the receiving cavity, with one end connected to the flange 2 and the other end connected to the end cap flange 3, and the second silencer pipe 5 is located between the first silencer pipe 4 and the outer wall 1. A novel composite perforated metal sound-absorbing plate 6 is disposed between a first silencer pipe 4 and a second silencer pipe 5. A corrugated filter element filler 7 is disposed between the second silencer pipe 5 and the outer wall 1. A water-absorbing layer 8 is disposed between the corrugated filter element filler 7 and the outer wall 1. A novel composite perforated metal sound-absorbing plate 9 is disposed between the water-absorbing layer 8 and the outer wall 1.

[0024] Specifically, the airflow enters through the first silencer pipe 4, exits through the first silencer hole on the first silencer pipe 4, enters the second silencer pipe 5 through the first novel composite through-hole metal sound-absorbing plate 6, exits through the second silencer hole on the second silencer pipe 5, and then passes sequentially through the corrugated filter element filler mesh 7 and the water-absorbing layer 8. After the water-absorbing layer 8 absorbs the moisture in the air, the airflow passes sequentially through the second novel composite through-hole metal sound-absorbing plate 9 and the outer wall through-hole on the outer wall 1 before exiting. The first silencer pipe 4, the second silencer pipe 5, the first novel composite through-hole metal sound-absorbing plate 6, the corrugated filter element filler mesh 7, the water-absorbing layer 8, and the second novel composite through-hole metal sound-absorbing plate 9 enable the airflow blown out by the air source to continuously change direction within the silencer used for gas noise, increasing the residence time of the airflow within the silencer. The noise is absorbed multiple times by the first novel composite through-hole metal sound-absorbing plate 6 and the second novel composite through-hole metal sound-absorbing plate 9 within the silencer used for gas noise, greatly improving the noise reduction effect.

[0025] Furthermore, the two ends of the first novel composite through-hole metal sound-absorbing plate 6 are in contact with the flange 2 and the end cover flange 3 respectively, and are pressed by the flange 2 and the end cover flange 3. However, it is not limited to being pressed by the flange 2 and the end cover flange 3. In this application, it is preferred that the flange 2 and the end cover flange 3 are pressed together, which facilitates installation, disassembly, replacement and maintenance.

[0026] Specifically, the first novel composite through-hole metal sound-absorbing plate 6 surrounds the first silencer tube 4 in one ring, but is not limited to one ring; in this application, one ring is preferred.

[0027] Furthermore, the two ends of the corrugated filter element filter filler mesh 7 are in contact with the flange 2 and the end cover flange 3 respectively, and are pressed by the flange 2 and the end cover flange 3. However, it is not limited to being pressed by the flange 2 and the end cover flange 3. In this application, it is preferred that the flange 2 and the end cover flange 3 are pressed together, which facilitates installation, disassembly, replacement and maintenance.

[0028] Specifically, the corrugated filter element filter filling mesh 7 surrounds the second silencer tube 5 in one ring, but is not limited to one ring; in this application, one ring is preferred.

[0029] Furthermore, the two ends of the absorbent layer 8 are in contact with the flange 2 and the end cover flange 3 respectively, and are pressed by the flange 2 and the end cover flange 3. However, it is not limited to being pressed by the flange 2 and the end cover flange 3. In this application, it is preferred that the flange 2 and the end cover flange 3 are pressed together, which facilitates installation, disassembly, replacement and maintenance.

[0030] Specifically, the absorbent layer 8 surrounds the corrugated filter element filter filling mesh 7 in one ring, but is not limited to one ring; in this application, one ring is preferred.

[0031] Furthermore, the two ends of the second novel composite through-hole metal sound-absorbing plate 9 are in contact with the flange 2 and the end cover flange 3 respectively, and are pressed by the flange 2 and the end cover flange 3. However, it is not limited to being pressed by the flange 2 and the end cover flange 3. In this application, it is preferred that the flange 2 and the end cover flange 3 are pressed together, which facilitates installation, disassembly, replacement and maintenance.

[0032] Specifically, the second novel composite through-hole metal sound-absorbing plate 9 surrounds the water-absorbing layer 8 in one ring, but is not limited to one ring; in this application, one ring is preferred.

[0033] Furthermore, a first stop limiting groove 21 is provided on the flange 2, and one end of the outer wall 1 is engaged in the first stop limiting groove 21.

[0034] Furthermore, a second stop limiting groove 31 is provided on the end cover flange 3, and the other end of the outer wall 1 is engaged in the second stop limiting groove 31.

[0035] Specifically, the two ends of the outer wall 1 are respectively snapped into the flange 2 and the end cover flange 3, which facilitates installation and disassembly. This makes it easier to replace and maintain the sound-absorbing materials inside the silencer used for gas noise (e.g., the first new type of composite through-hole metal sound-absorbing plate 6, the corrugated filter element filter filling mesh 7, the water-absorbing layer 8, and the second new type of composite through-hole metal sound-absorbing plate 9), thus improving work efficiency.

[0036] Furthermore, one end of the first silencer pipe 4 is welded to the flange 2, but not limited to welding; welding is preferred in this application.

[0037] Specifically, one end of the first silencer pipe 4 is welded to the flange 2 as a whole, which can increase the strength of the overall structure, improve the pressure resistance and safety of the silencer used for gas noise.

[0038] Furthermore, a clamping bolt 41 is provided at the other end of the first silencer pipe 4. The clamping bolt 41 passes through the end cover flange 3 and is connected to the clamping nut 42.

[0039] Specifically, when the clamping bolt 41 is connected to the clamping nut 42, the outer wall 1, the first novel composite through-hole metal sound-absorbing plate 6, the corrugated filter element filter filling mesh 7, the water-absorbing layer 8, and the second novel composite through-hole metal sound-absorbing plate 9 located between the flange 2 and the end cover flange 3 are all in a clamped state.

[0040] Furthermore, the other end of the first silencer pipe 4 is welded to one end of the clamping bolt 41, and the other end of the clamping bolt 41 passes through the end cover flange 3 and is connected to the clamping nut 42.

[0041] Furthermore, such as Figure 2 As shown, the first novel composite through-hole metal sound-absorbing panel 6 includes: a first sound-absorbing panel body 61; a plurality of first grooves 611 are provided on the top surface of the first sound-absorbing panel body 61, and a first through hole is provided at the bottom of the first grooves 611; a plurality of second grooves 612 are provided on the bottom surface of the first sound-absorbing panel body 61, and a second through hole is provided at the bottom of the second grooves 612; the plurality of first grooves 611 and the plurality of second grooves 612 are evenly spaced.

[0042] Furthermore, the first groove 611 is a triangular pyramidal groove, and the first through hole is located at the apex of the triangular pyramidal groove; the second groove 612 is a triangular pyramidal groove, and the second through hole is located at the apex of the triangular pyramidal groove. However, the first groove 611 and the second groove 612 are not limited to triangular pyramidal grooves. In this application, triangular pyramidal grooves are preferred.

[0043] Furthermore, the first through-hole is elliptical, but not limited to elliptical; in this application, it is preferably elliptical. The size of the first through-hole is measured in micrometers.

[0044] Furthermore, the second through-hole is elliptical, but not limited to elliptical; in this application, it is preferably elliptical. The unit of measurement for the size of the second through-hole is micrometer.

[0045] Specifically, the first groove 611 and the second groove 612 of the first novel composite through-hole metal sound-absorbing plate 6 can cause the reflected sound waves to collide and interfere with each other, resulting in attenuation. At the same time, even if some sound waves penetrate the elliptical through-hole at the apex of the triangular pyramidal groove, sound wave penetration loss will occur, making its sound absorption effect better.

[0046] Furthermore, the specific number of the first grooves 611 is set according to the actual situation. In this application, it is preferred to have a plurality of them, and the plurality of first grooves 611 are evenly arranged on the top surface of the first sound-absorbing plate body 61.

[0047] Furthermore, the specific number of the second grooves 612 is set according to the actual situation. In this application, it is preferred to be multiple, and multiple second grooves 612 are evenly arranged on the bottom surface of the first sound-absorbing plate body 61.

[0048] Specifically, since the bottom and top surfaces of the first novel composite through-hole metal sound-absorbing plate 6 are both distributed with a plurality of recessed triangular pyramids (i.e., triangular pyramid-shaped grooves), and the bottoms of the upper and lower triangular pyramids are connected by an elliptical micro-hole, the wavy shape and small protrusions (i.e., the cross-sectional shape of the first novel composite through-hole metal sound-absorbing plate 6) not only cause the reflected sound waves to collide and interfere with each other, resulting in attenuation, but also, even if some sound waves penetrate the elliptical micro-hole at the bottom of the triangular pyramid, it will cause sound wave penetration loss, thus making its sound absorption effect better.

[0049] Furthermore, the first novel composite through-hole metal sound-absorbing panel 6 is a sound-absorbing foamed aluminum honeycomb panel, but it is not limited to a sound-absorbing foamed aluminum honeycomb panel. In this application, a sound-absorbing foamed aluminum honeycomb panel is preferred.

[0050] Furthermore, the thickness of the first novel composite through-hole metal sound-absorbing plate 6 is 1 mm, but not limited to 1 mm; in this application, 1 mm is preferred.

[0051] Furthermore, the second novel composite through-hole metal sound-absorbing panel 9 includes: a second sound-absorbing panel body; a plurality of third grooves are provided on the top surface of the second sound-absorbing panel body, and a third through hole is provided at the bottom of the third groove; a plurality of fourth grooves are provided on the bottom surface of the second sound-absorbing panel body, and a fourth through hole is provided at the bottom of the fourth groove; the plurality of third grooves and the plurality of fourth grooves are evenly spaced.

[0052] Furthermore, the third groove is a triangular pyramidal groove, and the third through hole is located at the apex of the triangular pyramidal groove; the fourth groove is a triangular pyramidal groove, and the fourth through hole is located at the apex of the triangular pyramidal groove.

[0053] Furthermore, the third through-hole is elliptical, but not limited to elliptical; in this application, it is preferably elliptical. The unit of measurement for the size of the third through-hole is micrometer.

[0054] Furthermore, the fourth through hole is elliptical, but not limited to elliptical; in this application, it is preferably elliptical. The size of the fourth through hole is measured in micrometers.

[0055] Specifically, the third and fourth grooves of the second novel composite through-hole metal sound-absorbing plate 9 can cause reflected sound waves to collide and interfere with each other, resulting in attenuation. At the same time, even if some sound waves penetrate the elliptical through-hole at the apex of the triangular pyramidal groove, sound wave penetration loss will occur, making its sound absorption effect better.

[0056] Furthermore, the specific number of the third grooves is set according to the actual situation. In this application, it is preferred to have multiple third grooves, and multiple third grooves are evenly arranged on the top surface of the second sound-absorbing plate body.

[0057] Furthermore, the specific number of the fourth grooves is set according to the actual situation. In this application, it is preferred to have multiple fourth grooves, and multiple fourth grooves are evenly arranged on the bottom surface of the second sound-absorbing plate body.

[0058] Specifically, since the bottom and top surfaces of the second novel composite through-hole metal sound-absorbing plate 9 are both distributed with a plurality of recessed triangular pyramids (i.e., triangular pyramid-shaped grooves), and the bottoms of the upper and lower triangular pyramids are connected by an elliptical micro-hole, the wavy shape and small protrusions (i.e., the cross-sectional shape of the second novel composite through-hole metal sound-absorbing plate 9) not only cause the reflected sound waves to collide and interfere with each other, resulting in attenuation, but also, even if some sound waves penetrate the elliptical micro-hole at the bottom of the triangular pyramid, sound wave penetration loss will occur, making its sound absorption effect better.

[0059] Furthermore, the second novel composite through-hole metal sound-absorbing panel 9 is a sound-absorbing foamed aluminum honeycomb panel, but it is not limited to a sound-absorbing foamed aluminum honeycomb panel. In this application, a sound-absorbing foamed aluminum honeycomb panel is preferred.

[0060] Furthermore, the thickness of the second novel composite through-hole metal sound-absorbing plate 9 is 1 mm, but not limited to 1 mm; in this application, 1 mm is preferred.

[0061] Furthermore, the outer wall 1 is made of stainless steel precision tube after laser cutting and drilling, but is not limited to stainless steel precision tube after laser cutting and drilling. Preferred in this application is: stainless steel precision tube after laser cutting and drilling, which has multiple through holes on the outer wall.

[0062] Specifically, the number of through holes on the outer wall is set according to the actual situation. This application preferably uses multiple through holes evenly distributed on the outer wall. Stainless steel precision tubing is an existing material.

[0063] Furthermore, the first silencer pipe 4 is made of existing stainless steel material, but is not limited to stainless steel material; stainless steel material is preferred in this application.

[0064] Specifically, the number of the first silencer holes on the first silencer pipe 4 is set according to the actual situation.

[0065] Furthermore, the second silencer pipe 5 is made of existing stainless steel material, but is not limited to stainless steel material; stainless steel material is preferred in this application.

[0066] Specifically, the number of second silencer holes on the second silencer pipe 5 is set according to the actual situation.

[0067] Furthermore, the absorbent layer 8 is made of chamois cloth, but is not limited to chamois cloth; it can be replaced with other existing materials with strong water absorption. In this application, chamois cloth is preferred. When air passes through the chamois cloth, it can quickly absorb moisture from the air. Moreover, chamois cloth has strong water absorption, does not shed lint, and has a long service life.

[0068] Furthermore, such as Figure 3 As shown, the thickness of the chamois cloth is h millimeters, where h is a natural number.

[0069] Specifically, the thickness of the chamois cloth is set according to the actual situation, and the preferred thickness in this application is h mm = 1 mm.

[0070] Furthermore, the corrugated filter element filter filling mesh 7 is made of 304 stainless steel, but is not limited to 304 stainless steel. In this application, 304 stainless steel is preferred.

[0071] Specifically, the silencer for gas noise of this application is highly practical. It allows the airflow from the gas source to change direction multiple times within the silencer, thus prolonging the time the airflow stays within the silencer. This results in the noise being absorbed multiple times by the sound-absorbing material within the silencer, improving the noise reduction effect. Furthermore, the silencer facilitates the replacement and maintenance of the sound-absorbing material.

[0072] The main structure of the silencer for gas noise in this application is made of metal, employing a novel composite perforated metal sound-absorbing plate with an ultra-high sound absorption coefficient, protected by a stainless steel precision tube. It features ultra-low back pressure, high noise reduction effect, and large exhaust volume.

[0073] Furthermore, such as Figure 1 As shown, the specific values ​​for the connector size Z, total height H, shoulder height h, diameter D, pressure resistance, and silencing of the silencer used for gas noise are all set according to actual conditions. As an example, the technical parameters of the silencer used for gas noise are shown in Table 1.

[0074]

[0075] Table 1 shows the technical parameters of silencers used for gas noise.

[0076] Specifically, the dimensions of the receiving cavity are set according to the actual situation. When the receiving cavity is 60mm, with the corrugated filter element 7 and water-absorbing layer 8 filled inside, the NRC (Noise Reduction Coefficient) of the silencer used for gas noise reaches 0.7. When the receiving cavity is 90mm, with the corrugated filter element 7 and water-absorbing layer 8 filled inside, the NRC of the silencer used for gas noise reaches 0.75; the sound absorption coefficient of the silencer used for gas noise reaches 0.95 at around 1000Hz; the sound absorption coefficient of the silencer used for gas noise reaches 0.65 under water spray conditions; and the sound absorption coefficient of the silencer used for gas noise reaches 0.65 under dust spray conditions.

[0077] Furthermore, the pressure resistance of the silencer used for gas noise is 4 MPa, and the noise reduction is greater than or equal to 40 dBA, but it is not limited to a pressure resistance of 4 MPa and a noise reduction greater than or equal to 40 dBA.

[0078] The beneficial effects achieved by this application are as follows:

[0079] (1) The silencer for gas noise of this application is highly practical. It can make the air flow from the gas source change direction multiple times in the silencer for gas noise, so that the air flow stays in the silencer for gas noise for a longer time, thereby making the noise absorbed by the sound-absorbing material multiple times in the silencer for gas noise, thus improving the noise reduction effect.

[0080] (2) The silencer for gas noise of this application facilitates the replacement and maintenance of the sound-absorbing material.

[0081] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the scope of protection of this application is intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application. Obviously, those skilled in the art can make various alterations and variations to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of protection of this application and its equivalents, this application also intends to include these modifications and variations.

Claims

1. A silencer for gas noise, characterized in that, include: An outer wall with multiple external through holes, a flange, an end cap flange, a first silencing pipe with multiple first silencing holes, a second silencing pipe with multiple second silencing holes, a first novel composite through-hole metal sound-absorbing plate, a corrugated filter element filter filling mesh, a water-absorbing layer, and a second novel composite through-hole metal sound-absorbing plate. One end of the outer wall is connected to the flange, and the other end of the outer wall is connected to the end cover flange. After connection, the flange, the outer wall and the end cover flange constitute a shell with a cavity. The first silencer tube is installed in the receiving cavity. One end of the first silencer tube is connected to the flange, and the other end of the first silencer tube is connected to the end cover flange. The second silencer is installed in the receiving cavity. One end of the second silencer is connected to a flange, and the other end of the second silencer is connected to an end cover flange. The second silencer is located between the first silencer and the outer wall. The first novel composite perforated metal sound-absorbing plate is disposed between the first silencer tube and the second silencer tube; The corrugated filter element filter filling mesh is disposed between the second silencer tube and the outer wall, the water absorption layer is disposed between the corrugated filter element filter filling mesh and the outer wall, and the second novel composite through-hole metal sound-absorbing plate is disposed between the water absorption layer and the outer wall.

2. The silencer for gas noise according to claim 1, characterized in that, The flange is provided with a first stop limiting groove, and one end of the outer wall is engaged in the first stop limiting groove.

3. The silencer for gas noise according to claim 2, characterized in that, The end cover flange is provided with a second stop limiting groove, and the other end of the outer wall is engaged in the second stop limiting groove.

4. The silencer for gas noise according to claim 3, characterized in that, One end of the first silencer pipe is welded to the flange.

5. The silencer for gas noise according to claim 3, characterized in that, The other end of the first silencer pipe is equipped with a clamping bolt, which passes through the end cover flange and is connected to the clamping nut.

6. The silencer for gas noise according to claim 1, characterized in that, The absorbent layer is made of chamois cloth.

7. The silencer for gas noise according to claim 5, characterized in that, The first novel composite perforated metal sound-absorbing panel includes: a first sound-absorbing panel body; The top surface of the first sound-absorbing panel body is provided with a plurality of first grooves, and the bottom of the first groove is provided with a first through hole; The bottom surface of the first sound-absorbing panel body is provided with multiple second grooves, and the bottom of the second grooves is provided with second through holes; Multiple first grooves and multiple second grooves are evenly spaced.

8. The silencer for gas noise according to claim 7, characterized in that, The first groove is a triangular pyramidal groove, and the first through hole is located at the apex of the triangular pyramidal groove; the first through hole is elliptical. The second groove is a triangular pyramidal groove, and the second through hole is located at the apex of the triangular pyramidal groove; the second through hole is elliptical.

9. The silencer for gas noise according to claim 5, characterized in that, The second novel composite perforated metal sound-absorbing panel includes: a second sound-absorbing panel body; The top surface of the second sound-absorbing panel body is provided with multiple third grooves, and the bottom of the third groove is provided with a third through hole. The bottom surface of the second sound-absorbing panel body is provided with multiple fourth grooves, and the bottom of the fourth groove is provided with a fourth through hole. Multiple third grooves and multiple fourth grooves are evenly spaced.

10. The silencer for gas noise according to claim 9, characterized in that, The third groove is a triangular pyramidal groove, and the third through hole is located at the apex of the triangular pyramidal groove; the third through hole is elliptical. The fourth groove is a triangular pyramidal groove, and the fourth through hole is located at the apex of the triangular pyramidal groove; the fourth through hole is elliptical.

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