A cavity type low frequency wide band damping and noise reduction filler for pipe type power devices

Abstract

The utility model discloses a cavity type low frequency wide band damping and noise reduction filler for pipe type power device, including rubber filler, a plurality of noise reduction holes are seted up in rubber filler one side, the other side of rubber filler is the conformal design, and is compatible with the inner wall of pipe type power device, the utility model has the advantages of convenient to use, solved the existing noise reduction filler in the process of using, the low frequency damping and noise reduction characteristic is poor, has increased the propagation of noise, and is difficult to install in the arc inner wall of pipe type power device, and the problem of easy to cause the adhesion failure.

Description

TECHNICAL FIELD

[0001] The utility model relates to acoustics material technical field, concretely is a cavity type low frequency wide band damping and noise reduction filler for pipe type power device. BACKGROUND

[0002] The pipe type power device under water usually refers to the power system designed into the tubular structure, and this design is common in the underwater propulsion equipment, such as submarine, underwater unmanned aerial vehicle or some types of underwater propeller. This pipe type design can optimize the resistance when water flows through, improve the propulsion efficiency, and protect the internal mechanical parts from damage. The pipe type power device is filled with noise reduction filler, because in the underwater environment, noise is an important factor, sound can spread very far in water, and can be detected by sensitive aquatic organisms or underwater sonar system. For military use submarine, reducing noise can improve its concealment, making it more difficult to be detected. For civil equipment, reducing noise can reduce the impact on marine life, and improve the acoustic detection ability of the equipment itself.

[0003] The existing noise reduction filler has poor medium-low frequency damping and noise reduction characteristics in use, increases the propagation of noise, and is difficult to install in the arc-shaped inner wall of the pipe type power device, and is easy to cause adhesion failure. UTILITY MODEL CONTENTS

[0004] The utility model discloses a cavity type low frequency wide band damping and noise reduction filler for pipe type power device, has the advantages of convenient to use, solves the existing noise reduction filler in the process of using, and the medium-low frequency damping and noise reduction characteristics are poor, and the propagation of noise is increased, and it is difficult to install in the arc-shaped inner wall of the pipe type power device, and the problem that adhesion failure is easily caused.

[0005] To achieve the above object, the utility model provides the following technical scheme: a cavity type low frequency wide band damping and noise reduction filler for pipe type power device, including rubber filler, a plurality of noise reduction holes are seted up in rubber filler one side, the other side of rubber filler is the conformal design, and is compatible with the inner wall of pipe type power device.

[0006] As a cavity type low frequency wide band damping and noise reduction filler for pipe type power device of the utility model, the other side of rubber filler is fixedly connected with the mesh cloth.

[0007] As a cavity type low frequency wide band damping and noise reduction filler for pipe type power device of the utility model, the rubber filler and mesh cloth are fixedly connected with the adhesion agent, and the adhesion agent is fixedly connected with the inner wall of pipe type power device.

[0008] The utility model provides a cavity type low frequency wide band damping and noise reduction filler for pipe type power device, the rubber filler left and right sides all are fixedly connected with elastic element, one side of elastic element is fixedly connected with seat body.

[0009] The utility model provides a cavity type low frequency wide band damping and noise reduction filler for pipe type power device, the seat body is rotatably connected with the rotary rod, one end of rotary rod is equipped with the rotary head, the rotary head front end rotatably connected with first connecting seat, the rotary head rear end swing joint has the gasbag.

[0010] The utility model provides a cavity type low frequency wide band damping and noise reduction filler for pipe type power device, first connecting seat one end fixedly connected with spring, one end of spring is fixedly connected with second connecting seat, second connecting seat with one side rotatable connection of elastic element.

[0011] The utility model provides a cavity type low frequency wide band damping and noise reduction filler for pipe type power device, the rear side fixedly connected with reinforcing plate of gasbag, reinforcing plate and seat body fixed connection, the rear side fixedly connected with sealing element of elastic element, seat body and reinforcing plate, sealing element fixed mounting in pipe type power device inner wall.

[0012] The utility model provides a cavity type low frequency wide band damping and noise reduction filler for pipe type power device, reinforcing bolt is set up on reinforcing plate and sealing element and penetrates, reinforcing bolt is connected with pipe type power device threadedly.

[0013] Compared with the prior art, the utility model has the advantages of the following:

[0014] 1, the utility model discloses a plurality of noise reduction holes can be used as the resonance cavity of sound wave, when the sound wave enters these holes, will produce resonance effect in the hole, consumes sound wave energy, thereby reduces the transmission of noise, the other side of rubber filler is conformal design, namely its shape is matched with the inner wall of pipe type power device, can closely adhere to the inner wall, reduces sound wave reflection, improves the effect of noise reduction.

[0015] 2, the utility model discloses the elastic element can absorb the deformation of rubber filler due to thermal expansion and contraction, keeps the close contact between filler and pipe wall, one side of elastic element is fixedly connected with seat body, is used for supporting and fixing whole filler system, the rotary rod is rotatably connected with seat body, can adapt to the size change of thermal expansion and contraction, the rotary head front end is rotatably connected with first connecting seat, and the rear end is swing connected with gasbag, can provide adjustment and buffering function, spring can provide additional buffering effect, reduces the stress due to thermal expansion and contraction, ensures the stable contact between filler and pipe wall, and the gasbag can provide additional buffer layer between filler and pipe wall. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 Structure diagram of the utility model Figure 1 ;

[0017] Figure 2 Structure diagram of the utility model Figure 2 ;

[0018] Figure 3 Structure diagram of the utility model in installation state

[0019] Figure 4 Enlarged view of A in the utility model Figure 3

[0020] In the figure: 1, rubber filler; 2, noise reduction hole; 3, mesh cloth; 4, adhesive; 5, tubular power device; 6, elastic piece; 7, seat body; 8, rotating rod; 9, air bag; 10, sealing piece; 11, reinforcing bolt; 12, reinforcing plate; 13, rotating head; 14, first connecting seat; 15, spring; 16, second connecting seat. Specific implementation

[0021] Please refer to Figures 1-4 , a cavity type low frequency wide band damping noise reduction filler for tubular power device, including rubber filler 1, rubber filler 1 side is provided with a plurality of noise reduction holes 2, the other side of rubber filler 1 is conformal design, and is matched with the inner wall of tubular power device 5.

[0022] A plurality of noise reduction holes 2 can be used as the resonance cavity of sound wave, when the sound wave enters these holes, resonance effect can be generated in the hole, and the energy of sound wave is consumed, so that the transmission of noise is reduced.

[0023] The other side of rubber filler 1 is conformal design, that is, the shape is matched with the inner wall of tubular power device 5, can be closely attached to the inner wall, reduces sound wave reflection, and improves the noise reduction effect.

[0024] And the conformal design can make the inner wall of rubber filler 1 tubular power device 5 keep good contact, prevent the adhesion failure of contact surface.

[0025] Further, the other side of rubber filler 1 is fixedly connected with mesh cloth 3, and the rubber filler 1 and mesh cloth 3 are fixedly connected with adhesive 4, and the adhesive 4 is fixedly connected with the inner wall of tubular power device 5.

[0026] Mesh cloth 3 can improve the structural strength and stability of the filler, and adhesive 4 is used to fixedly connect rubber filler 1 with the inner wall of tubular power device 5, so that the filler does not separate from the inner wall, and the stability and noise reduction effect are maintained.

[0027] Further, the left and right sides of rubber filler 1 are fixedly connected with elastic piece 6, and one side of elastic piece 6 is fixedly connected with seat body 7. ​

[0028] Further, the seat body 7 is rotationally connected with a rotating rod 8, one end of the rotating rod 8 is provided with a rotating head 13, the front end of the rotating head 13 is rotationally connected with a first connecting seat 14, and the rear end of the rotating head 13 is movably connected with an air bag 9.

[0029] Further, one end of the first connecting seat 14 is fixedly connected with a spring 15, one end of the spring 15 is fixedly connected with a second connecting seat 16, and the second connecting seat 16 is rotationally connected with one side of the elastic member 6.

[0030] Further, the rear side of the air bag 9 is fixedly connected with a reinforcing plate 12, the reinforcing plate 12 is fixedly connected with the seat body 7, the rear side of the elastic member 6, the seat body 7 and the reinforcing plate 12 is fixedly connected with a sealing member 10, and the sealing member 10 is fixedly installed on the inner wall of the tubular power device 5.

[0031] Further, the reinforcing plate 12 and the sealing member 10 are provided with reinforcing bolts 11 penetrating through, and the reinforcing bolts 11 are threadedly connected with the tubular power device 5.

[0032] The left and right sides of the rubber filler 1 are fixedly connected with elastic members 6, these elastic members 6 can absorb the deformation of the rubber filler 1 caused by thermal expansion and cold contraction, maintain the close contact between the filler and the pipe wall, one side of the elastic member 6 is fixedly connected with a seat body 7 for supporting and fixing the whole filler system, the rotating rod 8 is rotationally connected with the seat body 7 and can adapt to the size change caused by thermal expansion and cold contraction, the front end of the rotating head 13 is rotationally connected with the first connecting seat 14, and the rear end is movably connected with the air bag 9, which can provide adjustment and buffering functions, the spring 15 can provide additional buffering effect, reduce the stress caused by thermal expansion and cold contraction, and ensure the stable contact between the filler and the pipe wall, the air bag 9 can provide an additional buffer layer between the filler and the pipe wall, adapt to the thermal expansion and cold contraction of the rubber filler 1, reduce the direct contact between the filler and the pipe wall, further reduce the vibration transmission, the reinforcing plate 12 can enhance the stability of the overall structure and prevent the structure from loosening due to thermal expansion and cold contraction, the sealing member 10 can provide additional sealing function to prevent liquid or gas leakage and ensure the sealing, and the reinforcing bolts 11 can fix the reinforcing plate 12 and the sealing member 10 on the inner wall of the tubular power device 5 to ensure the stability of the whole system and maintain good fixing effect.

[0033] The above is only a preferred embodiment of the present application, and is not intended to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A cavity type low frequency wide band damping and noise reducing filler for pipe type power plants, comprising a rubber filler (1), characterized in that: The rubber filler (1) is provided with a plurality of noise reduction holes (2) on one side, and the other side of the rubber filler (1) is designed in a conformal manner and is adapted to the inner wall of the tubular power device (5); The other side of the rubber filler (1) is fixedly connected with a mesh cloth (3); The rubber filler (1) and the mesh cloth (3) are fixedly connected with an adhesive (4), and the adhesive (4) is fixedly connected with the inner wall of the tubular power device (5); The rubber filler (1) is fixedly connected with elastic members (6) on the left and right sides, and one side of the elastic member (6) is fixedly connected with a seat body (7).

2. The hollow low-frequency wide-band damping and noise-reducing filler for a tubular power device according to claim 1, characterized in that: The seat body (7) is rotatably connected with a rotating rod (8), one end of the rotating rod (8) is provided with a rotating head (13), the front end of the rotating head (13) is rotatably connected with a first connecting seat (14), and the rear end of the rotating head (13) is movably connected with an air bag (9).

3. The hollow low-frequency wide-band damping and noise-reducing filler for a tubular power plant according to claim 2, characterized in that: One end of the first connecting seat (14) is fixedly connected with a spring (15), one end of the spring (15) is fixedly connected with a second connecting seat (16), and the second connecting seat (16) is rotatably connected with one side of the elastic member (6).

4. The hollow low-frequency wide-band damping and noise-reducing filler for a tubular power device according to claim 2, characterized in that: The rear side of the air bag (9) is fixedly connected with a reinforcing plate (12), the reinforcing plate (12) is fixedly connected with the seat body (7), the rear side of the elastic member (6), the seat body (7) and the reinforcing plate (12) is fixedly connected with a sealing member (10), and the sealing member (10) is fixedly installed on the inner wall of the tubular power device (5).

5. The hollow low-frequency wide-band damping and noise-reducing filler for a tubular power plant according to claim 4, characterized in that: The reinforcing plate (12) and the sealing member (10) are provided with reinforcing bolts (11) penetrating through, and the reinforcing bolts (11) are threadedly connected with the tubular power device (5).

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