Exhaust silencer

Abstract

The invention discloses an exhaust silencer which comprises a silencer cylinder, a silencer shell, an air inlet pipe and an exhaust pipe, the silencer shell wraps the outer side of the silencer cylinder, the air inlet pipe and the exhaust pipe are arranged at the two ends of the silencer cylinder respectively, a heat insulation layer is arranged between the silencer shell and the silencer cylinder, and the heat insulation layer is arranged between the silencer shell and the silencer cylinder. A partition plate is arranged in the silencer cylinder and divides the interior of the silencer cylinder into an air inlet cavity and an air outlet cavity, four inner sleeves are evenly distributed on the partition plate and penetrate through the partition plate, one end of each inner sleeve is of a straight cylinder structure and located in the air inlet cavity, and the other end of each inner sleeve is of a hollow cylinder structure and located in the air outlet cavity. According to the exhaust silencer, the noise reduction function of the exhaust silencer can be enhanced, noise in a plant is made to be smaller, meanwhile, the temperature of radiant heat emitted by the exhaust silencer is reduced, and it is guaranteed that the working performance of a generator set is not affected.

Description

Technical Field

[0001] The invention relates to the technical field of mufflers, in particular to an exhaust muffler. Background Art

[0002] The main function of the exhaust muffler is to reduce exhaust noise by gradually reducing the exhaust pressure and attenuating the pulsation of the exhaust pressure.

[0003] The existing exhaust silencer for generator sets has a straight-through structure inside, which results in relatively high exhaust gas pressure and temperature, poor noise reduction effect, and excessive radiant heat emitted by the silencer during the operation of the generator set causes the temperature of the plant to rise, affecting the working performance of the generator set. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide an exhaust muffler that can enhance the noise reduction function of the exhaust muffler, making the noise in the factory smaller, while reducing the temperature of the radiant heat emitted by the exhaust muffler to ensure that the working performance of the generator set is not affected, which can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an exhaust muffler, comprising a muffler cylinder, a muffler shell, an intake pipe and an exhaust pipe, the muffler shell is wrapped around the outside of the muffler cylinder, the intake pipe and the exhaust pipe are respectively arranged at the two ends of the muffler cylinder, a heat insulation layer is arranged between the muffler shell and the muffler cylinder, a partition is arranged inside the muffler cylinder, the partition divides the inner part of the muffler cylinder into an intake chamber and an exhaust chamber, four inner sleeves are evenly distributed on the partition, the inner sleeve passes through the partition, one end of the inner sleeve is a straight tube structure and is located in the intake chamber, and the other end of the inner sleeve is an elbow structure and is located in the exhaust chamber.

[0006] As a preferred technical solution of the present invention, the heat insulation layer is made of glass wool material and is used to control the temperature of the muffler shell within 60°C.

[0007] As a preferred technical solution of the present invention, small holes are evenly distributed on the edge of the partition.

[0008] As a preferred technical solution of the present invention, the four inner sleeves are evenly arranged along the central axis of the muffler barrel, and the elbow parts of the inner sleeves are arranged in the same clockwise direction.

[0009] As a preferred technical solution of the present invention, a bracket is provided inside the muffler cylinder for fixing the straight end of the inner sleeve.

[0010] As a preferred technical solution of the present invention, an intake end cover is provided at one end of the muffler cylinder, the intake pipe is fixed on the intake end cover, an intake flange is provided at one end of the intake end cover, an exhaust end cover is provided at the other end of the muffler cylinder, the exhaust pipe is fixed on the exhaust end cover, and an exhaust flange is provided at one end of the exhaust pipe.

[0011] As a preferred technical solution of the present invention, two muffler brackets are symmetrically arranged on the upper end of the outer side surface of the muffler shell.

[0012] As a preferred technical solution of the present invention, a discharge port is provided at the lower end of the outer side surface of the muffler cylinder, and the discharge port passes through the muffler shell.

[0013] As a preferred technical solution of the present invention, the material of the parts in contact with the exhaust gas is Q345R, and the material of the parts not in contact with the exhaust gas is Q235B.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the exhaust muffler is provided with four inner sleeves arranged along the central axis inside the muffler cylinder, one end of the inner sleeve is an elbow structure, and the elbow structure is arranged in the same clockwise direction, so that the exhaust gas forms a vortex, thereby reducing the energy of the gas, reducing its emission temperature and speed, and achieving a better noise reduction effect. At the same time, an insulating layer is provided between the muffler cylinder and the muffler outer shell to control the temperature of the muffler outer shell, thereby preventing the muffler from emitting excessive radiant heat during the operation of the generator set, causing the temperature of the factory building to rise. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention;

[0016] Figure 2 It is a main cross-sectional schematic diagram of the present invention;

[0017] Figure 3 for Figure 2 Left view of .

[0018] In the figure: 1 exhaust flange, 2 exhaust end cover, 3 exhaust pipe, 4 muffler bracket, 5 muffler cylinder, 6 insulation layer, 7 muffler shell, 8 partition, 9 inner sleeve, 10 bracket, 11 discharge port, 12 intake pipe, 13 intake end cover, 14 intake flange. DETAILED DESCRIPTION

[0019] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments (for the convenience of description and understanding, the following is a schematic diagram of the embodiment of the present invention). Figure 2Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0020] See also Figure 1-3 The present invention provides a technical solution: an exhaust muffler, comprising a muffler cylinder 5, a muffler shell 7, an intake pipe 3 and an exhaust pipe 12, the muffler shell 7 is wrapped around the outside of the muffler cylinder 5, the intake pipe 3 and the exhaust pipe 12 are respectively arranged at the two ends of the muffler cylinder 5, an intake end cover 13 is arranged at one end of the muffler cylinder 5, the intake pipe 3 is fixed on the intake end cover 13, an intake flange 14 is arranged at one end of the intake end cover 13, which is convenient for docking with an external pipeline, an exhaust end cover 13 is arranged at the other end of the muffler cylinder 5, the exhaust pipe 3 is fixed on the exhaust end cover 2, and an exhaust flange 1 is arranged at one end of the exhaust pipe 3, which is convenient for docking with an external pipeline;

[0021] A heat insulation layer 6 is provided between the muffler housing 7 and the muffler barrel 5 to control the surface temperature of the exhaust muffler;

[0022] A partition 8 is provided inside the muffler cylinder 5, and the partition 8 divides the inside of the muffler cylinder 5 into an air intake chamber and an exhaust chamber. Four inner sleeves 9 are evenly distributed on the partition 8, and the inner sleeves 9 pass through the partition 8. One end of the inner sleeve 9 is a straight tube structure and is located in the air intake chamber, and the other end of the inner sleeve 9 is an elbow structure and is located in the exhaust chamber. The four inner sleeves 9 are evenly arranged along the central axis of the muffler cylinder 5, and the elbow parts of the inner sleeves 9 are arranged in the same clockwise direction. The elbow parts can cause the exhaust gas to generate vortexes, reduce the gas energy in the center of the muffler cylinder 5, and reduce the exhaust temperature and speed, thereby achieving the purpose of noise reduction. At the same time, the gas vortex can make the gas pressure at the edge of the muffler cylinder 5 higher than the gas pressure in the center, so that the gas can more easily pass through the inner sleeve 9 into the exhaust pipe 12.

[0023] In order to control the radiation temperature of the muffler housing 7, the heat insulation layer 6 is made of glass wool material to control the temperature of the muffler housing 7 within 60°C.

[0024] In order to prevent the exhaust gas from accumulating and blocking on both sides of the partition 8, small holes are evenly distributed at the edge of the partition 8 so that the air inlet cavity and the exhaust cavity are connected.

[0025] In order to ensure the stability of the inner sleeve 9 , a bracket 10 is provided inside the muffler cylinder 5 for fixing the straight end of the inner sleeve 9 .

[0026] In order to facilitate the hoisting of the exhaust muffler in the factory, two muffler brackets 4 are symmetrically arranged on the upper end of the outer surface of the muffler shell 7.

[0027] In order to facilitate drainage, a drain port 11 is provided at the lower end of the outer side surface of the muffler cylinder 5 , and the drain port 11 passes through the muffler shell 7 .

[0028] In order to increase the earthquake resistance, the materials of the parts in contact with the exhaust gas, such as the air intake flange 14, the air intake end cover 13, the exhaust end cover 2, the exhaust flange 1 and the muffler barrel 5, are made of Q345R material. The Q345R material has good high temperature resistance, can withstand the high temperature gas generated when the diesel generator set is working, and is not easy to soften, which can meet the earthquake resistance requirements of the factory. In order to save costs, the materials of the parts that do not contact the exhaust gas, such as the muffler housing 7 and the muffler bracket 4, are made of Q235B material to improve the economy of the exhaust muffler.

[0029] The present invention can effectively improve the noise reduction function of the exhaust silencer, reduce the noise of the factory, and at the same time prevent the silencer from emitting excessive radiant heat during the operation of the generator set, causing the temperature of the factory to rise, thereby avoiding affecting the working performance of the generator set.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An exhaust muffler, comprising a muffler cylinder (5), a muffler shell (7), an air intake pipe (3) and an exhaust pipe (12), wherein the muffler shell (7) is wrapped around the outside of the muffler cylinder (5), and the air intake pipe (3) and the exhaust pipe (12) are respectively arranged at two ends of the muffler cylinder (5), characterized in that: A heat insulating layer (6) is provided between the muffler shell (7) and the muffler cylinder (5); a partition (8) is provided inside the muffler cylinder (5); the partition (8) divides the inside of the muffler cylinder (5) into an air intake chamber and an air exhaust chamber; four inner sleeves (9) are evenly distributed on the partition (8); the inner sleeves (9) pass through the partition (8); one end of the inner sleeve (9) is a straight tube structure and is located in the air intake chamber; the other end of the inner sleeve (9) is an elbow structure and is located in the air exhaust chamber.

2. An exhaust muffler according to claim 1, characterized in that: The heat insulation layer (6) is made of glass wool material and is used to control the temperature of the muffler housing (7) to be within 60°C.

3. An exhaust muffler according to claim 1, characterized in that: Small holes are evenly distributed on the edge of the partition (8).

4. An exhaust muffler according to claim 1, characterized in that: The four inner sleeves (9) are evenly arranged along the central axis of the muffler barrel (5), and the elbow parts of the inner sleeves (9) are arranged in the same clockwise direction.

5. The exhaust muffler according to claim 1, characterized in that: A bracket (10) is arranged inside the muffler cylinder (5) for fixing the straight end of the inner sleeve (9).

6. An exhaust muffler according to claim 1, characterized in that: An air intake end cover (13) is provided at one end of the muffler barrel (5), the air intake pipe (3) is fixed on the air intake end cover (13), an air intake flange (14) is provided at one end of the air intake end cover (13), an exhaust end cover (13) is provided at the other end of the muffler barrel (5), the exhaust pipe (3) is fixed on the exhaust end cover (2), and an exhaust flange (1) is provided at one end of the exhaust pipe (3).

7. An exhaust muffler according to claim 1, characterized in that: Two muffler brackets (4) are symmetrically arranged on the upper end of the outer side surface of the muffler housing (7).

8. The exhaust muffler according to claim 1, characterized in that: A discharge port (11) is provided at the lower end of the outer side surface of the muffler cylinder (5), and the discharge port (11) passes through the muffler shell (7).

9. The exhaust muffler according to claim 1, characterized in that: The material of the parts in contact with the exhaust gas is Q345R, and the material of the parts not in contact with the exhaust gas is Q235B.

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