Pipeline silencer

Abstract

The pipeline silencer comprises a shell and a silencing assembly arranged in the shell, the silencing assembly comprises a first silencing section, a second silencing section and a third silencing section which are connected with one another, the first silencing section comprises a first silencing cylinder and a plurality of silencing pieces obliquely arranged in the first silencing cylinder, and the third silencing section comprises a second silencing cylinder and a plurality of silencing pieces obliquely arranged in the second silencing cylinder. The second silencing section comprises a first connecting cylinder, a second silencing cylinder and a second connecting cylinder which are connected with one another, the diameter of the second silencing cylinder is larger than that of the first silencing cylinder, the third silencing section is made of a third silencing cylinder, and a plurality of silencing holes are formed in the cylinder wall of the third silencing cylinder. According to the pipeline silencer, the silencing assembly is arranged, the silencing cotton is arranged on the inner cylinder wall of the first silencing cylinder, and the silencing sheet is obliquely arranged on the pipe wall of the first silencing pipe, so that the contact time of airflow and the sound absorption structure is longer, and the utilization rate of the sound absorption structure is higher; therefore, the sound absorption efficiency in the cavity of the whole sound absorber is high.

Description

Technical Field

[0001] This utility model relates to the field of silencer technology, and in particular, to a pipeline silencer. Background Technology

[0002] The turbocharger in a car is the main noise source of a turbocharged diesel engine, requiring a muffler for noise reduction. Existing mufflers absorb noise by installing porous sound-absorbing materials on the inner wall of the duct where airflow occurs. They are effective at controlling mid- and high-frequency noise, but less effective at controlling low-frequency noise. Reactive mufflers reduce mid- and low-frequency noise in the duct by causing sound waves to reflect and interfere through sudden changes in the duct cross-section, reducing or altering the impedance of the resonant cavity adjacent to the muffler cavity. Impedance-composite mufflers combine resistive and reactive unit structures according to the required noise reduction to achieve a wider noise reduction bandwidth.

[0003] However, the existing muffler cavity has an inner tube that extends from the inlet pipe to the outlet pipe along the length of the muffler cavity. Therefore, when the airflow enters from the inlet pipe, the airflow will mainly pass through the inner tube due to the guidance of the inner tube. The contact time between the airflow and the sound-absorbing structure is short, resulting in a low utilization rate of the sound-absorbing structure and thus a low sound absorption efficiency in the entire muffler cavity. Utility Model Content

[0004] Therefore, it is necessary to provide a pipeline silencer with high sound absorption efficiency.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a pipeline silencer, the pipeline silencer includes a shell and a silencer assembly disposed in the shell, the silencer assembly includes a first silencer section, a second silencer section and a third silencer section connected to each other, the first silencer section includes a first silencer cylinder and a plurality of silencer plates inclinedly disposed in the first silencer cylinder, the second silencer section includes a first connecting cylinder, a second silencer cylinder and a second connecting cylinder connected to each other, the diameter of the second silencer cylinder is larger than the diameter of the first silencer cylinder, the third silencer section is made of a third silencer cylinder, and a plurality of silencer holes are opened on the cylinder wall of the third silencer cylinder.

[0006] Furthermore, the inner wall of the first silencer is provided with sound-absorbing cotton.

[0007] Furthermore, the silencing plate and the first silencing cylinder form an inclination angle of a, where a = 60°.

[0008] Furthermore, both the first connecting cylinder and the second connecting cylinder are frustum-shaped structures, and the first connecting cylinder and the second connecting cylinder are mirror images of each other.

[0009] Furthermore, the pipeline silencer also includes an air inlet pipe and an air outlet pipe, both of which are disposed on the housing. One end of the first silencer cylinder is fixedly connected to the air inlet pipe, and one end of the third silencer cylinder is fixedly connected to the air outlet pipe.

[0010] Furthermore, the pipeline silencer also includes a drain valve connector seat, which is disposed on the housing and connected to the inner cavity of the housing.

[0011] Furthermore, an air intake connector is provided at one end of the air intake pipe.

[0012] Furthermore, an air outlet connector is provided at one end of the air outlet pipe.

[0013] Furthermore, the housing includes a left shell and a right shell, which are fixed together by welding.

[0014] Furthermore, an air inlet is provided at the end of the left shell away from the right shell, and the air inlet pipe is connected to and communicates with the air inlet. An air outlet is provided at the end of the right shell away from the left shell, and the air outlet pipe is connected to and communicates with the air outlet.

[0015] The beneficial effects of this utility model are: the pipeline silencer provided by this utility model, by setting a silencer component and setting a silencer cotton on the inner wall of the first silencer tube, and the silencer plate is inclinedly set on the pipe wall of the first silencer tube, can make the airflow have a longer contact time with the sound absorption structure, thus the utilization rate of the sound absorption structure is higher, resulting in a higher sound absorption efficiency in the entire silencer cavity. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a schematic diagram of the structure of the pipeline silencer of this utility model;

[0018] Figure 2 yes Figure 1 A bottom view of the pipeline silencer shown;

[0019] Figure 3 yes Figure 2 The diagram shows a cross-sectional view along line AA in the pipeline silencer.

[0020] The component names and their numbers in the diagram are as follows: 1. Housing; 11. Left housing; 111. Air inlet; 12. Right housing; 121. Air outlet; 2. Air inlet pipe; 21. Air inlet connector; 3. Air outlet pipe; 31. Air outlet connector; 4. Drain valve connector seat; 5. Silencing assembly; 51. First silencer section; 511. First silencer cylinder; 512. Silencing plate; 52. Second silencer section; 521. First connecting cylinder; 522. Second silencer cylinder; 523. Second connecting cylinder; 53. Third silencer section; 531. Silencing hole; 6. Mounting bracket. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0022] Please see Figures 1 to 3 This utility model provides a pipeline silencer, which includes a housing 1, an air inlet pipe 2, an air outlet pipe 3, a drain valve connector 4, and a silencer assembly 5. The air inlet pipe 2, the air outlet pipe 3, and the drain valve connector 4 are all disposed on the housing 1, and the silencer assembly 5 is disposed inside the housing 1.

[0023] The shell 1 is generally cylindrical and can-shaped. The shell 1 includes a left shell 11 and a right shell 12, which are fixed together by welding. Further, an air inlet 111 is provided at the end of the left shell 11 away from the right shell 12, and an air inlet pipe 2 is connected to and communicates with the air inlet 111. An air outlet 121 is provided at the end of the right shell 12 away from the left shell 11, and an air outlet pipe 3 is connected to and communicates with the air outlet 121.

[0024] One end of the air intake pipe 2 is equipped with an air intake connector 21, and the other end of the air intake pipe 2 is connected to one end of the muffler assembly 5. One end of the air outlet pipe 3 is equipped with an air outlet connector 31, and the other end of the air outlet pipe 3 is connected to the other end of the muffler assembly 5. In use, the airflow enters the air intake pipe 2 through the air intake connector 21, then enters the muffler assembly 5 for noise reduction, and finally exits from the air outlet pipe 3 and the air outlet connector 31.

[0025] The drain valve connector 4 is mounted on the housing 1 and is connected to the inner cavity of the housing 1. In this embodiment, the drain valve connector 4 can discharge the condensate accumulated in the inner cavity of the housing 1. During the operation of the silencer, condensate will be generated due to gas cooling. If the condensate is not discharged in time, it may cause corrosion in the inner cavity of the housing 1, thereby affecting the performance and life of the silencer. Therefore, the drain valve connector 4 is installed to discharge the condensate regularly or automatically to keep the inner cavity of the silencer dry and extend its service life.

[0026] The silencing assembly 5 includes a first silencing section 51, a second silencing section 52, and a third silencing section 53 connected to each other. The first silencing section 51 includes a first silencing cylinder 511 and a plurality of silencing plates 512 disposed within the first silencing cylinder 511. One end of the first silencing cylinder 511 is fixedly connected to the air intake pipe 2. The silencing plates 512 are obliquely disposed on the pipe wall of the first silencing cylinder 511, and the plurality of silencing plates 512 are arranged parallel to each other. Further, sound-absorbing cotton (not shown in the figure) is disposed on the inner wall of the first silencing cylinder 511, thereby increasing the silencing effect of the silencer. In this embodiment, the silencing plates 512 and the first silencing cylinder 511 form an inclination angle of α, where α = 60°, thereby slowing down the airflow velocity and allowing the airflow to fully contact the sound-absorbing cotton and the silencing plates 512, further improving the silencing effect of the silencer.

[0027] The second silencer section 52 includes a first connecting cylinder 521, a second silencer cylinder 522, and a second connecting cylinder 523. One end of the first connecting cylinder 521 is fixedly connected to the end of the first silencer cylinder 511 away from the air intake pipe 2, and the other end of the first connecting cylinder 521 is fixedly connected to the second silencer cylinder 522. One end of the second connecting cylinder 523 is fixedly connected to the other end of the second silencer cylinder 522, and the other end of the second connecting cylinder 523 is fixedly connected to the third silencer section 53. Furthermore, the diameter of the second silencer cylinder 522 is larger than the diameter of the first silencer cylinder 511, thereby increasing the contact area of ​​the airflow and improving the silencer's noise reduction effect.

[0028] Furthermore, both the first connecting cylinder 521 and the second connecting cylinder 523 are frustum-shaped structures, and the first connecting cylinder 521 and the second connecting cylinder 523 are mirror images of each other.

[0029] The third silencer section 53 is made of a third silencer cylinder. One end of the third silencer cylinder is fixedly connected to the second connecting cylinder 523, and the other end of the third silencer cylinder is fixedly connected to the air outlet pipe 3. Multiple silencer holes 531 are opened on the cylinder wall of the third silencer cylinder, and the multiple silencer holes 531 are arranged evenly and at equal intervals on the third silencer cylinder 53.

[0030] Furthermore, the pipeline silencer also includes a mounting bracket 6, which is fixedly connected to the housing 1 and is used to support the housing 1.

[0031] The pipeline silencer provided by this utility model, by setting a silencer component 5 and setting a silencer cotton on the inner wall of the first silencer tube 511, and setting the silencer plate 512 obliquely on the tube wall of the first silencer tube 511, can make the airflow have a longer contact time with the sound absorption structure, thus the utilization rate of the sound absorption structure is higher, resulting in a higher sound absorption efficiency in the entire silencer cavity.

[0032] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the scope of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A pipeline silencer, characterized in that: The pipeline silencer includes a housing and a silencer assembly disposed within the housing. The silencer assembly includes a first silencer section, a second silencer section, and a third silencer section connected to each other. The first silencer section includes a first silencer cylinder and a plurality of silencer plates inclinedly disposed within the first silencer cylinder. The second silencer section includes a first connecting cylinder, a second silencer cylinder, and a second connecting cylinder connected to each other. The diameter of the second silencer cylinder is larger than the diameter of the first silencer cylinder. The third silencer section is made of a third silencer cylinder, and a plurality of silencer holes are formed on the cylinder wall of the third silencer cylinder.

2. The pipeline silencer as described in claim 1, characterized in that: The inner wall of the first silencer is provided with sound-absorbing cotton.

3. The pipeline silencer as described in claim 2, characterized in that: The silencing plate and the first silencing cylinder form an inclination angle of a, where a = 60°.

4. The pipeline silencer as described in claim 1, characterized in that: Both the first connecting cylinder and the second connecting cylinder are frustum-shaped structures, and the first connecting cylinder and the second connecting cylinder are mirror images of each other.

5. The pipeline silencer as described in claim 1, characterized in that: The pipeline silencer also includes an air inlet pipe and an air outlet pipe, both of which are mounted on the housing. One end of the first silencer cylinder is fixedly connected to the air inlet pipe, and one end of the third silencer cylinder is fixedly connected to the air outlet pipe.

6. The pipeline silencer as described in claim 1, characterized in that: The pipeline silencer also includes a drain valve connector seat, which is disposed on the housing and connected to the inner cavity of the housing.

7. The pipeline silencer as described in claim 5, characterized in that: An air intake connector is provided at one end of the air intake pipe.

8. The pipeline silencer as described in claim 5, characterized in that: One end of the vent pipe is equipped with a vent connector.

9. The pipeline silencer as described in claim 1, characterized in that: The housing includes a left shell and a right shell, which are fixed together by welding.

10. The pipeline silencer as described in claim 9, characterized in that: An air inlet is provided at the end of the left shell away from the right shell, and the air inlet pipe is connected to and communicates with the air inlet. An air outlet is provided at the end of the right shell away from the left shell, and the air outlet pipe is connected to and communicates with the air outlet.

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