Silencer for noise control of wind power generation

Abstract

The utility model relates to the technical field of silencers, and discloses a silencer for wind power generation noise control, which comprises a silencing cylinder, a rubber pad is mounted in the silencing cylinder, second partition plates are mounted in the silencing cylinder on two sides of the rubber pad, and wave crest sound-absorbing cotton is arranged on opposite sides of the second partition plates on two sides. The air inlet pipe, the transfer pipe and the air outlet pipe are matched to enable air to form an S-shaped circulation path in the silencing barrel, contact reflection between the air and the damping sound absorption cotton and the contact reflection between the air and the wave crest sound absorption cotton are increased, and therefore the noise reduction and silencing effect of the silencing barrel is improved; by means of the structure, air can be diffused outwards, the flow dividing effect is achieved, the friction effect between the air and the inner pipeline in the circulation process is further promoted, sound energy is converted into heat energy to be dissipated, and the silencing effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of mufflers, in particular to a muffler used for controlling noise in wind power generation. Background Art

[0002] In power plants, various air outlet ducts are needed for wind power generation ventilation. However, due to the friction between the wind near the outlet and the equipment, the noise of the equipment is serious. Therefore, a muffler is needed to reduce the noise of the wind power generation group.

[0003] Chinese patent authorization announcement number CN220581366U discloses a fan muffler, including a muffler shell, a rectifier assembly is arranged on the outer surface of one end of the muffler shell, and an exhaust pipe is arranged on the outer surface of one end of the rectifier assembly. The fan muffler described in the utility model includes a conical air inlet pipe, a connecting flange, a rubber sealing sleeve, a rubber limit ring and a connecting hole through the anti-leakage air inlet connecting tube, which can rectify and discharge the silenced gas when in use, so as to avoid gas accumulation and turbulence affecting the muffler effect. This muffler is not only simple in structure, but also easy to operate, bringing better use prospects. The above-mentioned prior art scheme has the following shortcomings: in the muffler structure, since the air inlet and the air outlet are coaxially distributed, the air flow channel in the muffler shell is linear. Since the exhaust wind speed is relatively large, the time for the air to flow through the muffler is relatively short, which in turn affects its absorption and noise reduction effect on air noise, so there is a certain room for improvement. Utility Model Content

[0004] The utility model aims to provide a muffler for wind power generation noise control, so as to solve the problem that the existing muffler proposed in the above background technology has a short air circulation time, which in turn affects the noise reduction and sound absorption effect.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a silencer for wind power generation noise control, comprising a silencer, a rubber pad is installed inside the silencer, and second baffles are installed inside the silencers on both sides of the rubber pad, and wave peak sound-absorbing cotton is arranged on the opposite sides of the second baffles on both sides, and the inner wall of the silencer is provided with damping sound-absorbing cotton, and a cavity is opened inside the inner wall of the silencer, an air inlet pipe is penetrated between the rubber pad and the second baffle on one side, an air outlet pipe is penetrated between the rubber pad and the second baffle on the other side, and the end of the air outlet pipe away from the air inlet pipe extends to the outside of the silencer, an air inlet is opened at one end of the silencer close to the air inlet pipe, and an air intake hood is arranged outside the air inlet, a diverter plate is clamped inside the air intake hood, and diverter holes are evenly opened inside the diverter plate, a transfer pipe is penetrated inside the rubber pad, and one end of the transfer pipe is connected to the outside of the air outlet pipe and the air inlet pipe by a fixing mechanism.

[0006] Preferably, the cross-section of the transfer pipe is L-shaped, and the L-shaped corner position of the transfer pipe is closer to the crest sound-absorbing cotton than the air inlet pipe.

[0007] Preferably, a sound insulation sponge is installed inside the transfer tube, and the sound insulation sponge is located at an L-shaped corner position inside the transfer tube.

[0008] Preferably, the air outlet pipe is located at one end inside the silencer cylinder, which is closer to the wave crest sound-absorbing cotton than the transfer pipe, and the air outlet pipe and the air inlet pipe are distributed on both sides of the transfer pipe.

[0009] Preferably, through holes are evenly opened on the outside of the air outlet pipe and the air inlet pipe, and two groups of through holes are respectively located on both sides of the rubber pad. Sound absorbing panels are evenly installed on the outside of the air outlet pipe and the air inlet pipe, and the sound absorbing panels and the through holes are alternately distributed at intervals.

[0010] Preferably, the fixing mechanism includes arc-shaped clamping plates which are sleeved on both sides of one end of the transfer pipe, and first connecting blocks are installed on both sides of the arc-shaped clamping plates, the outsides of the air outlet pipe and the air inlet pipe are sleeved with connecting rings, and second connecting blocks are installed on both sides of the connecting rings, the second connecting block corresponds to the position of the first connecting block, and the second connecting block and the first connecting block are connected through fixing bolts, and locking nuts are sleeved on the outsides of the fixing bolts.

[0011] Preferably, rubber pads are provided on the inner sides of the connecting ring and the arc-shaped clamping plate, and the inner walls of the rubber pads are respectively against the outer walls of the air outlet pipe, the air inlet pipe and the transfer pipe.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] (1) The air forms an S-shaped flow path inside the silencer through the coordination of the air inlet pipe, the transfer pipe and the air outlet pipe, increasing the contact reflection between the air and the damping sound-absorbing cotton and the wave peak sound-absorbing cotton, thereby improving the noise reduction and silencing effect of the silencer. The through holes and the sound-absorbing panels are coordinated to facilitate the outward diffusion of the air, thereby achieving a diversion effect, further promoting the friction effect between the air and the inner pipe during the circulation process, converting the sound energy into heat energy and dissipating it, thereby achieving the silencing effect. The cavity is utilized to further improve the noise reduction transmission of the silencer to the sound waves, thereby improving the silencing effect.

[0014] (2) The arc-shaped clamping plate and the connecting ring are matched to connect the transfer pipe, the air outlet pipe and the air inlet pipe respectively, thereby ensuring the stability of the position of the transfer pipe inside the silencer, ensuring the accuracy of the relative positions between the air inlet pipe, the air outlet pipe and the transfer pipe, and utilizing the transfer effect between the transfer pipes to improve the reflection effect of the air in the chambers on both sides of the rubber pad, thereby facilitating the improvement of the noise reduction and silencing effect of the air. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the three-dimensional structure of the air inlet pipe of the utility model;

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the fixing mechanism of the utility model;

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the transfer tube cross section of the utility model.

[0020] Explanation of the reference numerals in the figure: 1. Silencer; 2. Air intake hood; 3. Diverter plate; 4. Diverter hole; 5. Air inlet; 6. Cavity; 7. Damping sound-absorbing cotton; 8. Second partition; 9. Air outlet pipe; 10. Through hole; 11. Transfer pipe; 12. Fixing mechanism; 1201. Arc-shaped clamping plate; 1202. Connecting ring; 1203. Second connecting block; 1204. First connecting block; 1205. Fixing bolt; 1206. Locking nut; 13. Air intake pipe; 14. Wave peak sound-absorbing cotton; 15. Sound-absorbing board; 16. Sound insulation sponge; 17. Rubber pad. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-Figure 4The utility model provides an embodiment: a silencer for wind power generation noise control, including a silencer 1, a rubber pad 17 is installed inside the silencer 1, and the silencer 1 on both sides of the rubber pad 17 is installed with a second partition 8, and the opposite sides of the second partition 8 on both sides are provided with a wave crest sound-absorbing cotton 14, the inner wall of the silencer 1 is provided with a damping sound-absorbing cotton 7, and the inner wall of the silencer 1 is provided with a cavity 6, an air inlet pipe 13 is penetrated between the rubber pad 17 and the second partition 8 on one side, and an air outlet pipe 9 is penetrated between the rubber pad 17 and the second partition 8 on the other side;

[0023] The outlet pipe 9 is located at one end of the silencer 1, which is closer to the wave peak sound-absorbing cotton 14 than the transfer pipe 11, and the outlet pipe 9 and the inlet pipe 13 are distributed on both sides of the transfer pipe 11;

[0024] Through holes 10 are evenly formed on the outside of the air outlet pipe 9 and the air inlet pipe 13, and two groups of through holes 10 are respectively located on both sides of the rubber pad 17. Sound absorbing panels 15 are evenly installed on the outside of the air outlet pipe 9 and the air inlet pipe 13, and the sound absorbing panels 15 and the through holes 10 are alternately distributed at intervals.

[0025] Specifically, Figure 1 , Figure 2 As shown, when in use, the through hole 10 and the sound absorbing plate 15 are used to convert the sound energy into heat energy and dissipate it when the sound wave is propagated in the porous sound absorbing material under the influence of friction and viscous resistance, thereby achieving the purpose of noise reduction;

[0026] The end of the air outlet pipe 9 away from the air inlet pipe 13 extends to the outside of the muffler 1, the end of the muffler 1 close to the air inlet pipe 13 is provided with an air inlet 5, and an air inlet cover 2 is provided outside the air inlet 5, a diverter plate 3 is engaged inside the air inlet cover 2, and diverter holes 4 are evenly provided inside the diverter plate 3, and a transfer pipe 11 runs through the inside of the rubber pad 17;

[0027] The cross section of the transfer pipe 11 is L-shaped, and the L-shaped corner position of the transfer pipe 11 is closer to the wave crest sound-absorbing cotton 14 than the air inlet pipe 13;

[0028] A sound insulation sponge 16 is installed inside the transfer tube 11, and the sound insulation sponge 16 is located at an L-shaped corner position inside the transfer tube 11;

[0029] Specifically, Figure 1 , Figure 4 As shown, when in use, the transfer tube 11 is used to transfer the sound waves, thereby increasing the propagation time of the sound waves in the silencer 1 to ensure the attenuation effect of the sound waves in the silencer 1, so as to improve the noise reduction and silencing effect;

[0030] One end of the transfer pipe 11 is connected to the outside of the air outlet pipe 9 and the air inlet pipe 13 by a fixing mechanism 12;

[0031] The fixing mechanism 12 includes an arc-shaped clamping plate 1201 sleeved on both sides of one end of the transfer tube 11, and first connecting blocks 1204 are installed on both sides of the arc-shaped clamping plate 1201, and connecting rings 1202 are sleeved on the outside of the air outlet pipe 9 and the air inlet pipe 13, and second connecting blocks 1203 are installed on both sides of the connecting ring 1202, and the second connecting block 1203 corresponds to the first connecting block 1204 in position, and fixing bolts 1205 are penetrated and connected between the second connecting block 1203 and the first connecting block 1204, and locking nuts 1206 are sleeved on the outside of the fixing bolts 1205;

[0032] The inner sides of the connecting ring 1202 and the arc-shaped clamping plate 1201 are both provided with rubber pads 17, and the inner walls of the rubber pads 17 are respectively against the outer walls of the air outlet pipe 9, the air inlet pipe 13 and the transfer pipe 11;

[0033] Specifically, Figure 1 , Figure 3 As shown, when in use, the connection between the arc-shaped clamping plate 1201 and the connecting ring 1202 is utilized to improve the fixing effect between the air outlet pipe 9, the transfer pipe 11 and the air inlet pipe 13 to ensure their relative position stability.

[0034] Working principle: When the utility model is in use, first, air enters the interior of the silencer 1 from the air inlet cover 2, and the diversion hole 4 is used to divert the air so that it flows evenly into the silencer 1, and the air enters the air inlet pipe 13. Through the action of the air inlet pipe 13, the air is transmitted to the right chamber, so that the sound waves are reflected in different directions by the wave crest sound-absorbing cotton 14, so as to achieve a certain noise reduction effect;

[0035] Secondly, the air passes through the transfer pipe 11 to the left chamber, and is transmitted outwardly through the air outlet pipe 9, so that the air refluxes to form an S shape, thereby increasing the noise reduction time. The sound wave energy is weakened by the impact reflection of the sound wave with the damping sound-absorbing cotton 7, the wave peak sound-absorbing cotton 14 and the sound insulation sponge 16 during the transmission process. The distributed flow air passes through the through hole 10 and the sound-absorbing board 15 at a high speed by utilizing the effect of the through hole 10 and the sound insulation sponge 16, and the friction effect is utilized to further consume the sound wave energy, thereby achieving the noise reduction and silencing effect.

[0036] Finally, during the installation process, the outside of the air outlet pipe 9 and the air inlet pipe 13 are wrapped with a connecting ring 1202, and then the outer end of the transfer pipe 11 is wrapped with two arc-shaped clamps 1201, and then the arc-shaped clamps 1201 on both sides are connected with the connecting ring 1202 using fixing bolts 1205, and fixed with locking nuts 1206 to improve the connection stability between the transfer pipe 11 and the air outlet pipe 9 and the air inlet pipe 13, and ensure the fixation of the relative positions of the three.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, i.e., they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Those of ordinary skill in the art may understand and implement it without creative effort.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A silencer for controlling wind power generation noise, comprising a silencer tube (1), characterized in that: A rubber pad (17) is installed inside the silencer (1), and a second partition (8) is installed inside the silencer (1) on both sides of the rubber pad (17), and the opposite sides of the second partition (8) on both sides are provided with wave peak sound-absorbing cotton (14), the inner wall of the silencer (1) is provided with damping sound-absorbing cotton (7), and a cavity (6) is opened inside the inner wall of the silencer (1), an air inlet pipe (13) is passed through between the rubber pad (17) and the second partition (8) on one side, and an air outlet pipe (9) is passed through between the rubber pad (17) and the second partition (8) on the other side. ), and one end of the air outlet pipe (9) away from the air inlet pipe (13) extends to the outside of the silencer (1); an air inlet (5) is provided at one end of the silencer (1) close to the air inlet pipe (13), and an air inlet cover (2) is provided outside the air inlet (5); a diverter plate (3) is engaged inside the air inlet cover (2), and diverter holes (4) are evenly provided inside the diverter plate (3); a transfer pipe (11) runs through the inside of the rubber pad (17), and one end of the transfer pipe (11) is connected to the outside of the air outlet pipe (9) and the air inlet pipe (13) by a fixing mechanism (12).

2. A muffler for wind power generation noise control according to claim 1, characterized in that: The cross section of the transfer pipe (11) is L-shaped, and the L-shaped corner position of the transfer pipe (11) is closer to the wave crest sound-absorbing cotton (14) than the air inlet pipe (13).

3. A muffler for wind power generation noise control according to claim 1, characterized in that: A sound insulation sponge (16) is installed inside the transfer tube (11), and the sound insulation sponge (16) is located at an L-shaped corner position inside the transfer tube (11).

4. A muffler for wind power generation noise control according to claim 1, characterized in that: The air outlet pipe (9) is located at one end inside the silencer (1) and is closer to the wave crest sound-absorbing cotton (14) than the transfer pipe (11). The air outlet pipe (9) and the air inlet pipe (13) are distributed on both sides of the transfer pipe (11).

5. The muffler for wind power generation noise control according to claim 1, characterized in that: The outsides of the air outlet pipe (9) and the air inlet pipe (13) are uniformly provided with through holes (10), and the two groups of through holes (10) are respectively located on both sides of the rubber pad (17). The outsides of the air outlet pipe (9) and the air inlet pipe (13) are uniformly provided with sound absorbing panels (15), and the sound absorbing panels (15) and the through holes (10) are alternately distributed at intervals.

6. A muffler for wind power generation noise control according to claim 1, characterized in that: The fixing mechanism (12) comprises an arc-shaped clamping plate (1201) sleeved on both sides of one end of the transfer pipe (11), and first connecting blocks (1204) are installed on both sides of the arc-shaped clamping plate (1201), and the outsides of the air outlet pipe (9) and the air inlet pipe (13) are sleeved with connecting rings (1202), and second connecting blocks (1203) are installed on both sides of the connecting rings (1202), the second connecting block (1203) corresponds to the position of the first connecting block (1204), and the second connecting block (1203) and the first connecting block (1204) are connected through fixing bolts (1205), and the fixing bolts (1205) are sleeved on the outsides of the fixing bolts (1205).

7. A muffler for wind power generation noise control according to claim 6, characterized in that: The inner sides of the connecting ring (1202) and the arc-shaped clamping plate (1201) are both provided with rubber pads (17), and the inner walls of the rubber pads (17) are respectively against the outer walls of the air outlet pipe (9), the air inlet pipe (13) and the transfer pipe (11).

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