CN216617640U

CN216617640U - Novel silencer applied to train

Info

Publication number: CN216617640U
Application number: CN202122901425.8U
Authority: CN
Inventors: 陆伟峰; 孙海涛; 祁晓东; 刘强; 曹禺; 于涛
Original assignee: Shanghai Nuocheng Engineering Machinery Exhaust System Co ltd
Current assignee: Shanghai Nuocheng Engineering Machinery Exhaust System Co ltd
Priority date: 2021-11-24
Filing date: 2021-11-24
Publication date: 2022-05-27
Anticipated expiration: 2031-11-24

Abstract

The utility model discloses a novel silencer applied to a train, which comprises a base, wherein the base is fixed on an engine through bolts, the top of the base is fixedly connected with a silencer main body formed by combining an inner screen component and an outer screen component, the inner screen component comprises an inner screen, a plurality of small holes are uniformly formed in the inner screen, the outer screen component comprises an outer screen, the outer screen comprises a plurality of reinforcing ribs which are arranged in a mutually crossed mode, a cavity is formed between the inner screen component and the outer screen component and filled with glass fiber cotton for silencing, sound waves are transmitted in a porous sound absorption material or a sound absorption structure, sound energy is converted into heat energy due to friction and is radiated, noise transmitted along a pipeline is attenuated along with distance, medium-frequency and high-frequency noise is reduced, and the reinforcing plate component, the annular reinforcing plate component and the cover plate component are welded on the inner screen, the inner screen is reinforced, and a flange component assembly is welded on the side face of the silencer and used for connecting an EGR passage.

Description

Novel silencer applied to train

Technical Field

The utility model belongs to the technical field of silencers, and particularly relates to a novel silencer applied to a train.

Background

The silencer is used for the airflow pipeline with noise transmission, and can attenuate or reflect the noise in the pipeline by using noise reduction devices such as a pipeline and an elbow with sound absorption linings or a pipeline with suddenly changed cross section and other discontinuous acoustic impedance. The former is called resistive muffler, the latter is called reactive muffler, and there is also damping of the impedance composite.

The train generally adopts high-power internal-combustion engine, and internal-combustion engine during operation, the motion of air current can produce very big noise, need to control the exhaust noise in order to reduce the exhaust noise pollution of internal-combustion engine. At the same time, the volume of the muffler needs to be reduced for compactness of the arrangement.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a novel silencer applied to a train, which aims to solve the problems that a high-power internal combustion engine is generally adopted in the operation of the train, the movement of airflow can generate great noise when the internal combustion engine works, and the exhaust noise needs to be controlled in order to reduce the exhaust noise pollution of the internal combustion engine. And also, for the compactness of the arrangement, there is a problem that the volume of the muffler needs to be reduced.

In order to achieve the purpose, the utility model provides the following technical scheme: a novel silencer applied to a train comprises a base, wherein the base is fixed on an engine through bolts, and the top of the base is fixedly connected with a silencer main body formed by combining an inner screen assembly and an outer screen assembly;

the inner screen assembly comprises an inner screen, and a plurality of small holes are uniformly formed in the inner screen;

the outer screen assembly comprises an outer screen, and the outer screen is composed of a plurality of reinforcing ribs which are arranged in a mutually crossed manner;

a silencing cavity is formed between the inner screen and the outer screen, and first glass fiber cotton, second glass fiber cotton and third glass fiber cotton are arranged inside the silencing cavity and are filled with the first glass fiber cotton, the second glass fiber cotton and the third glass fiber cotton.

Preferably, the outer side of the top of the inner screen is fixedly welded with a reinforcing plate and an annular reinforcing plate, and the annular reinforcing plate is arranged at the bottom of the reinforcing plate.

Preferably, the side surface of the silencer main body is fixedly welded with a connecting flange part which can be used for an EGR passage, and the other side surface of the silencer is fixedly connected with a lifting lug for transporting and installing the silencer.

Preferably, the inner screen and the outer screen are provided with air outlet ends, and cover plates are arranged between the inner screen and the outer screen and welded together through the cover plates.

Preferably, a plurality of through holes are uniformly formed in the outer side of the base, and the through holes are formed in the outer side of the silencer main body. Preferably, a side plate is fixedly arranged on the inner side wall of the outer screen, and the side plate is arranged on the outer side of the first glass fiber cotton, the second glass fiber cotton and the third glass fiber cotton.

The utility model has the technical effects and advantages that: form a cavity through in the middle of interior screen subassembly and the outer screen subassembly, be full of the glass fiber cotton who is used for the amortization in the cavity, the base passes through the bolt and fixes the base subassembly in engine top base and is the position place of the air inlet of this silencer simultaneously, be covered with the aperture on the interior screen subassembly and form the anechoic chamber with the outer screen subassembly, the anechoic chamber is with first glass fiber cotton, second glass fiber cotton and third glass fiber cotton are full of, the sound wave propagates in porose sound-absorbing material or sound-absorbing structure, turn into the sound energy into heat energy and give off because of the friction, make the noise along the pipeline propagation attenuate along with the distance, reduce intermediate frequency and high frequency noise. The reinforcing plate component, the annular reinforcing plate component and the cover plate component are welded on the inner screen, the inner screen has a reinforcing effect, and the side face of the silencer is welded with the flange component for connecting an EGR passage. The lifting lug assembly is arranged on the side face of the silencer and used for transferring and installing the silencer, and the silencer has the advantages of being small in size, simple in structure and obvious in silencing effect, so that the environment on a train is more comfortable.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a top view of the present invention;

fig. 3 is a perspective view of the present invention.

In the figure: 1. a base; 2. a flange member; 3. first glass fiber wool; 4. second glass fiber wool; 5. third glass fiber cotton; 6. an inner screen; 7. a side plate; 8. an outer screen; 9. a reinforcing plate; 10. lifting lugs; 11. a reinforcing plate; 12. and (7) a cover plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The utility model provides a novel silencer applied to a train, which is shown in figures 1-3, and comprises a base 1, wherein the base 1 is fixed on an engine through bolts, and the top of the base 1 is fixedly connected with a silencer main body formed by combining an inner screen assembly and an outer screen assembly;

the inner screen assembly comprises an inner screen 6, and a plurality of small holes are uniformly formed in the inner screen 6;

the outer screen assembly comprises an outer screen 8, and the outer screen 8 consists of a plurality of reinforcing ribs which are arranged in a mutually crossed manner;

a silencing cavity is formed between the inner screen 6 and the outer screen 8, the silencing cavity is internally provided with a first glass fiber cotton 3, a second glass fiber cotton 4 and a third glass fiber cotton 5 and is filled with the first glass fiber cotton 3, the second glass fiber cotton 4 and the third glass fiber cotton 5, the silencing cavity is filled with the first glass fiber cotton 3, the second glass fiber cotton 4 and the third glass fiber cotton 5, sound waves are transmitted in a porous sound absorption material or a sound absorption structure, sound energy is converted into heat energy due to friction and is emitted, and noise transmitted along a pipeline is attenuated along with distance.

Specifically, the fixed welding in 6 top outsides of interior screen has reinforcing plate 11 and annular reinforcing plate 9, annular reinforcing plate 9 sets up in reinforcing plate 11 bottom.

Specifically, the side surface of the silencer main body is fixedly welded with a connecting flange component 2 which can be used for an EGR passage, and the other side surface of the silencer is fixedly connected with a lifting lug 10 which is used for transporting and installing the silencer.

Specifically, the inner screen 6 and the outer screen 8 are provided with air outlet ends, and a cover plate 12 is arranged between the inner screen 6 and the outer screen 8 and welded together through the cover plate 12.

Specifically, a plurality of through holes are evenly seted up in the base 1 outside, and are a plurality of the through holes all set up in the silencer main part outside.

Specifically, a side plate 7 is fixedly arranged on the inner side wall of the outer screen 8, and the side plate is arranged on the outer sides of the first glass fiber cotton 3, the second glass fiber cotton 4 and the third glass fiber cotton 5.

The working principle is as follows: the silencer is characterized in that the silencer main body consists of an inner screen assembly and an outer screen assembly which are sleeved together, the inner screen assembly is fully provided with small holes which are distributed uniformly, the outer screen is formed by reinforcing ribs which are crossed with each other, one end of the inner screen assembly and one end of the outer screen assembly are welded on an inlet flange at the same time, the other end of the inner screen assembly and the other end of the outer screen assembly are air outlet ends, and the inner screen assembly and the outer screen assembly are welded together through a cover plate; a cavity is formed between the inner screen component and the outer screen component, the cavity is filled with glass fiber cotton for noise reduction, the base fixes the base 1 on the upper part of an engine through bolts and is the position of an air inlet of the silencer, the inner screen 6 is fully distributed with small holes and forms a noise reduction cavity with the outer screen 8, the noise reduction cavity is filled with first glass fiber cotton 3, second glass fiber cotton 4 and third glass fiber cotton 5, sound waves are transmitted in a porous sound absorption material or a sound absorption structure and are converted into heat energy by friction to be dissipated, so that the noise transmitted along a pipeline is attenuated along with the distance and the intermediate frequency and high frequency noise is reduced, a reinforcing plate 11, an annular reinforcing plate 9 and a cover plate 12 are welded on the inner screen, the side surface of the silencer is welded with a flange component 2 for connection of an EGR passage, the side surface of the silencer is provided with a lifting lug 10 for transportation and installation of the silencer, the integral train muffler has the characteristics of small volume, simple structure and obvious noise elimination effect, and makes the environment on the train more comfortable.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.

Claims

1. A novel silencer applied to a train comprises a base (1) and is characterized in that: the silencer is characterized in that the base (1) is fixed on an engine, and the top of the base (1) is fixedly connected with a silencer main body formed by combining an inner screen assembly and an outer screen assembly;

the inner screen assembly comprises an inner screen (6), and a plurality of small holes are uniformly formed in the inner screen (6);

the outer screen assembly comprises an outer screen (8), and the outer screen (8) is composed of a plurality of reinforcing ribs which are arranged in a mutually crossed mode;

a silencing cavity is formed between the inner screen (6) and the outer screen (8), and the silencing cavity is internally provided with first glass fiber cotton (3), second glass fiber cotton (4) and third glass fiber cotton (5) and is filled with the first glass fiber cotton (3), the second glass fiber cotton (4) and the third glass fiber cotton (5).

2. The new muffler applied to train as claimed in claim 1, wherein: the outer side of the top of the inner screen (6) is fixedly welded with a reinforcing plate (11) and an annular reinforcing plate (9), and the annular reinforcing plate (9) is arranged at the bottom of the reinforcing plate (11).

3. The new muffler applied to train as claimed in claim 1, wherein: the side surface of the silencer main body is fixedly provided with a connecting flange part (2) which can be used for an EGR passage, and the other side surface of the silencer is fixedly connected with a lifting lug (10) which is used for transporting and installing the silencer.

4. The new muffler applied to train as claimed in claim 1, wherein: interior screen (6) and outer screen (8) one end all are provided with the end of giving vent to anger, be provided with apron (12) and weld together through apron (12) between interior screen (6) and outer screen (8).

5. The new muffler applied to train as claimed in claim 1, wherein: a plurality of through holes are uniformly formed in the outer side of the base (1), and the through holes are formed in the outer side of the silencer main body.

6. The novel muffler applied to a train as claimed in claim 1, wherein a side plate (7) is fixedly arranged on the inner side wall of the outer screen (8), and the side plate is arranged outside the first glass fiber cotton (3), the second glass fiber cotton (4) and the third glass fiber cotton (5).