CN209976596U

CN209976596U - Silencer for internal combustion power pack of motor train unit

Info

Publication number: CN209976596U
Application number: CN201920778441.2U
Authority: CN
Inventors: 谈国良; 陈塘
Original assignee: Wuxi Wanli Industrial Group Co Ltd
Current assignee: Wuxi Wanli Industrial Group Co Ltd
Priority date: 2019-05-27
Filing date: 2019-05-27
Publication date: 2020-01-21
Anticipated expiration: 2029-05-27

Abstract

The utility model relates to a muffler for EMUs internal combustion power package, including the inside inner bag that is hollow, wrap the outer periphery of inner bag and be used for absorbing the energy storage layer of heat energy, arrange the polylith baffle in the hollow inside of inner bag, make the hollow inside of inner bag separate and form a plurality of cavities, all set up a plurality of perforated pipes that are used for stepping down in each cavity; an air inlet pipe and an air outlet pipe which are communicated with the cavity are respectively arranged on the inner container, and a guide plate is also arranged in the cavity at one end of the air inlet pipe where waste gas flows out. The utility model discloses simple structure, convenient to use, according to the size of the volume that sprays paint of internal combustion power package, can change the size in aperture on the perforated pipe, make high-pressure gas reduce pressure behind the perforated pipe, utilize the perforated pipe of multistage series connection, make the decompression become step by step and step down to greatly reduced the noise, its noise elimination volume that can throttle is 15 ~ 25dB (A), the effective absorption temperature of arranging on the layer of receiving can, guarantee that operating personnel is not scalded.

Description

Silencer for internal combustion power pack of motor train unit

Technical Field

The utility model relates to a muffler field especially relates to a muffler for EMUs internal combustion power package.

Background

The noise of the internal combustion power pack belongs to an environment pollution source, and is composed of a plurality of sound sources, wherein the sound sources are mainly aerodynamic noise and surface radiation noise, and in order to control the leakage of the pollution source, a silencer capable of meeting the noise reduction volume of the internal combustion power pack needs to be designed.

SUMMERY OF THE UTILITY MODEL

The applicant aims at the existing problems, researches and improvements are carried out, and a silencer for an internal combustion power pack of a motor train unit is provided, so that noise pollution can be greatly reduced, and the silencing effect is improved.

The utility model discloses the technical scheme who adopts as follows:

a silencer for an internal combustion power pack of a motor train unit comprises an inner container with a hollow interior, an energy storage layer for absorbing heat energy is coated on the periphery of the inner container, a plurality of partition plates are arranged in the hollow interior of the inner container, so that the hollow interior of the inner container is partitioned into a plurality of chambers, and a plurality of porous pipes for reducing pressure are arranged in each chamber; an air inlet pipe and an air outlet pipe which are communicated with the cavity are respectively arranged on the inner container, and a guide plate is also arranged in the cavity at one end of the air inlet pipe where waste gas flows out.

The further technical scheme is as follows:

the perforated pipe is a cylindrical hollow pipe, and a plurality of holes are formed in the outer ring of the perforated pipe along the circumferential direction;

the hole is any one of a round hole or a square hole;

the guide plate is an arc-shaped plate, and a plurality of rib plates for reinforcing the structural strength are arranged on one surface of the guide plate, which is in contact with the waste gas, from top to bottom;

the porous pipes in each cavity are arranged in a staggered manner;

the porous pipes in the cavities are connected in series and are concentrically arranged;

and the periphery of the nano energy layer is also coated with an outer cladding layer.

The utility model has the advantages as follows:

the utility model discloses simple structure, convenient to use, according to the size of the volume that sprays paint of internal combustion power package, can change the size in aperture on the perforated pipe, make high-pressure gas reduce pressure behind the perforated pipe, utilize the perforated pipe of multistage series connection, make the decompression become step by step and step down to greatly reduced the noise, its noise elimination volume that can throttle is 15 ~ 25dB (A), the effective absorption temperature of arranging on the layer of receiving can, guarantee that operating personnel is not scalded.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the middle deflector of the present invention.

Fig. 3 is an enlarged schematic view of fig. 1 at a.

Wherein: 1. an outer cladding; 2. a nano-energy layer; 3. an inner container; 4. a baffle; 401. a rib plate; 5. a partition plate; 601. an outer chamber; 602. an intermediate chamber; 603. an interior chamber; 7. an air inlet pipe; 8. a perforated pipe; 801. an aperture; 9. and an air outlet pipe.

Detailed Description

The following describes embodiments of the present invention.

As shown in figure 1, the silencer for the internal combustion power pack of the motor train unit comprises an inner container 3, wherein the inner container 3 is hollow, an air inlet pipe 7 and an air outlet pipe 9 are respectively arranged on the inner container 3, a nano energy layer 2 used for absorbing heat energy is coated on the periphery of the inner container 3, and an outer cladding layer 1 is further coated on the periphery of the nano energy layer 2. The inner container 3 is provided with a plurality of partition plates 5 inside the hollow part, so that the hollow part of the inner container 3 is partitioned into a plurality of chambers, the chambers in the embodiment are an external chamber 601, a middle chamber 602 and an internal chamber 603, a plurality of porous pipes 8 for pressure reduction are arranged in each chamber, and mounting holes (not shown in the figure) for matching the porous pipes 8 are formed in each partition plate 5. The porous pipes 8 may be arranged in the outer chamber 601, the middle chamber 602, and the inner chamber 603 in a staggered manner, or the porous pipes 8 may be arranged in the outer chamber 601, the middle chamber 602, and the inner chamber 603 in a concentric manner as shown in fig. 1, in this embodiment, the porous pipe 8 located in the outer chamber 601 is communicated with the air outlet pipe 9, one porous pipe 8 is further disposed in the middle chamber 602 at the upper part of the group of the concentrically arranged porous pipes, and both ends of the porous pipe 8 are respectively communicated with the outer chamber 601 and the inner chamber 603. Each porous pipe 8 is a cylindrical hollow pipe, a plurality of holes 801 are formed in the outer ring of each porous pipe 8 along the circumferential direction, each hole 801 is a circular hole or a square hole, a guide plate 4 is further arranged in the inner cavity 603 at one end of waste gas flowing out of the air inlet pipe 7, each guide plate 4 is an arc-shaped plate, and a plurality of rib plates 401 used for reinforcing the structural strength are arranged on one surface of each guide plate 4, which is in contact with the waste gas, from top to bottom.

The utility model discloses a concrete working process as follows:

as shown in fig. 1, the pipeline of intake pipe 7 runs through baffle 5 and stretches into inside cavity 603 in this embodiment, and the exhaust waste gas of internal combustion power package directly gets into inside cavity 603 through intake pipe 7, because the initial velocity of power package combustion gas is higher, consequently directly guides to guide plate 4 after 7 flows out of intake pipe, if not arrange guide plate 4, this gas can directly strike the utility model discloses a on the left side board, noise pollution is improved to influence the noise cancelling effect, and above-mentioned problem can be avoided to this guide plate 4. The gas flows into the middle chamber 602 and the outer chamber 601 through the holes 801 on the porous pipe 8 along different paths respectively, the gas is impacted and reduced pressure for many times through different paths in the process, so that the noise of the internal combustion power pack is greatly reduced, and finally the gas is discharged through the gas outlet pipe 9. The arrangement of the novel middle and outer cladding layer prevents the working personnel from being scalded due to overhigh surface temperature of the silencer, so that the surface temperature of the silencer is reduced to be lower than 80 ℃, and the appearance of the silencer is more attractive and elegant.

The above description is for the purpose of explanation and not limitation of the invention, which is defined in the claims, and any modifications may be made without departing from the basic structure of the invention.

Claims

1. The utility model provides a muffler for EMUs internal combustion power package which characterized in that: the device comprises an inner container (3) with a hollow interior, wherein a nano-energy layer (2) for absorbing heat energy is coated on the periphery of the inner container (3), a plurality of partition plates (5) are arranged in the hollow interior of the inner container (3) to partition the hollow interior of the inner container (3) into a plurality of chambers, and a plurality of porous pipes (8) for reducing pressure are arranged in each chamber; an air inlet pipe (7) and an air outlet pipe (9) which are communicated with the cavity are respectively arranged on the inner container (3), and a guide plate (4) is further arranged in the cavity at one end of the air inlet pipe (7) where the waste gas flows out.

2. The silencer for the internal combustion power pack of the motor train unit as claimed in claim 1, wherein: the perforated pipe (8) is a cylindrical hollow pipe, and a plurality of holes (801) are formed in the outer ring of the perforated pipe (8) along the circumferential direction.

3. The muffler for the internal combustion power pack of a motor train unit according to claim 2, wherein: the hole (801) is any one of a circular hole or a square hole.

4. The silencer for the internal combustion power pack of the motor train unit as claimed in claim 1, wherein: the guide plate (4) is an arc-shaped plate, and a plurality of rib plates (401) used for reinforcing the structural strength are arranged on the surface, contacting with waste gas, of the guide plate (4) from top to bottom.

5. The silencer for the internal combustion power pack of the motor train unit as claimed in claim 1, wherein: the porous pipes (8) in each chamber are arranged in a staggered way.

6. The silencer for the internal combustion power pack of the motor train unit as claimed in claim 1, wherein: the perforated pipes (8) in each chamber are connected in series and are concentrically arranged.

7. The silencer for the internal combustion power pack of the motor train unit as claimed in claim 1, wherein: the periphery of the nano energy layer (2) is also coated with an outer cladding layer (1).