Silencer of diesel generator

Abstract

The utility model provides a silencer of a diesel generator, which comprises a smoke cooling and filtering assembly and is characterized in that the middle part of the upper part of the smoke cooling and filtering assembly is fixedly connected with a diesel generator body; a silencing cover is fixedly connected to the middle of the upper portion of the smoke cooling and filtering assembly and connected to the outer side of the diesel generator body in a buckled mode. A first sound absorption layer is glued to the inner side surface of each silencing cover; inverted-L-shaped ventilation pipes are fixedly connected to openings in the upper middle portions of the front side and the rear side of the interior of the silencing cover correspondingly. The arrangement of the flue gas filter box, the first filter screen, the second filter screen, the third filter screen, the auxiliary exhaust fan, the gas inlet pipe and the flue gas cooling assembly is beneficial to achieving the effect of treating diesel flue gas, the problem that the diesel flue gas pollutes the noise reduction structure can be effectively avoided, and then the problem that the noise reduction effect of the noise reduction structure is affected is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of diesel generators, and particularly relates to a muffler for a diesel generator. Background Art

[0002] The muffler of a diesel generator is a device that can effectively reduce the noise generated by the diesel generator. For example, a silencing mechanism of a diesel generator with a publication number of CN218542408U includes a base, on the upper surface of which a sound insulation cover is fixed. The upper surface of the base is slidably connected with a mounting plate, and a diesel generator is fixed on the upper surface of the mounting plate. Sound insulation plates are fixed at both the left and right ends inside the sound insulation cover. There are still some problems in the actual use of this silencing mechanism. For example, the flue gas discharged from the diesel generator will directly pollute the silencing structure, which may affect the silencing effect of the silencing structure. Summary of the Utility Model

[0003] In order to solve the above existing technical problems, the utility model provides a muffler for a diesel generator, which can achieve the effect of treating diesel flue gas, effectively avoid the problem of the silencing structure being polluted by diesel flue gas, and further avoid the problem that the silencing effect of the silencing structure is affected.

[0004] Its technical solution is as follows: A muffler for a diesel generator includes a flue gas cooling and filtering assembly. It is characterized in that a diesel generator body is fixedly connected to the middle upper part of the upper part of the flue gas cooling and filtering assembly; a muffler cover is fixedly connected to the middle upper part of the upper part of the flue gas cooling and filtering assembly, and the muffler cover is buckled outside the diesel generator body; a first sound absorption layer is glued to the inner surface of the muffler cover; inverted L-shaped ventilation pipes are respectively fixedly connected to the upper middle openings of the front and rear sides inside the muffler cover, and the inverted L-shaped ventilation pipes respectively penetrate through the inside of the first sound absorption layer. A second sound absorption layer is glued to the inner surface of the inverted L-shaped ventilation pipe; the flue gas cooling and filtering assembly is also connected to the exhaust pipe of the diesel generator body.

[0005] Preferably, the flue gas cooling and filtering assembly includes a flue gas filtering box. A first filter screen, a second filter screen and a third filter screen are fixedly connected in sequence from right to left in the middle of the inside of the flue gas filtering box; installation openings are respectively arranged on the front and rear sides of the middle left side inside the flue gas filtering box, and auxiliary exhaust fans are respectively fixedly connected to the inner sides of the installation openings; an air inlet pipe is integrally connected to the upper middle right opening of the flue gas filtering box, and a flue gas cooling assembly is fixedly connected to the upper end of the air inlet pipe.

[0006] Preferably, the flue gas cooling assembly includes a cooling cylinder, conical tubes are integrally connected to the upper and lower ends of the cooling cylinder respectively, and connecting tubes are integrally connected to the outer ends of the conical tubes respectively; partition plates are integrally connected to the upper and lower sides inside the cooling cylinder respectively, and dispersion conveying tubes are integrally connected longitudinally at the openings at the inner circumferential parts between the partition plates; a water inlet is arranged at the front lower side inside the cooling cylinder, and a water outlet is arranged at the rear upper side inside the cooling cylinder; both the water inlet and the water outlet are located between the partition plates; a water inlet pipe is integrally connected to the inside of the water inlet; a water outlet pipe is integrally connected to the inside of the water outlet.

[0007] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0008] 1. In the present utility model, the flue gas filtration box, the first filter screen, the second filter screen, the third filter screen, the auxiliary exhaust fan, the air inlet pipe and the flue gas cooling assembly are provided, which is beneficial to achieving the effect of treating diesel flue gas, can effectively avoid the problem that the diesel flue gas pollutes the sound insulation structure, and further avoid the problem that the sound insulation effect of the sound insulation structure is affected.

[0009] 2. In the present utility model, the cooling cylinder, the conical tubes, the connecting tubes, the partition plates, the dispersion conveying tubes, the water inlet pipe and the water outlet pipe are provided, which is beneficial to achieving the effect of facilitating the reduction of the flue gas temperature. Description of the Drawings

[0010] Figure 1 is a schematic structural diagram of the present utility model.

[0011] Figure 2 is a partial sectional view of the present utility model.

[0012] Figure 3 is a sectional view of the flue gas cooling and filtering assembly of the present utility model.

[0013] Figure 4 is a partial sectional view of the flue gas cooling assembly of the present utility model.

[0014] In the figure:

[0015] 1. Flue gas cooling and filtering assembly; 11. Flue gas filtration box; 12. First filter screen; 13. Second filter screen; 14. Third filter screen; 15. Auxiliary exhaust fan; 16. Air inlet pipe; 17. Flue gas cooling assembly; 171. Cooling cylinder; 172. Conical tube; 173. Connecting tube; 174. Partition plate; 175. Dispersion conveying tube; 176. Water inlet pipe; 177. Water outlet pipe; 2. Diesel generator body; 3. Sound insulation cover; 4. First sound absorption layer; 5. Inverted L-shaped ventilation pipe; 6. Second sound absorption layer. Detailed Embodiment

[0016] The present utility model will be specifically described below with reference to the drawings. As shown in the attachedFigure 1 and the attached Figure 2 As shown in the figure, a muffler for a diesel generator includes a flue gas cooling and filtering component 1. In the middle of the upper part of the flue gas cooling and filtering component 1, a diesel generator body 2 is fixedly connected. In the middle of the upper part of the flue gas cooling and filtering component 1, a muffler cover 3 is fixedly connected, and the muffler cover 3 is buckled on the outside of the diesel generator body 2. A first sound-absorbing layer 4 is adhesively bonded to the inner surface of the muffler cover 3. At the upper middle openings on the front and rear sides inside the muffler cover 3, inverted L-shaped ventilation pipes 5 are respectively fixedly connected, and the inverted L-shaped ventilation pipes 5 respectively penetrate through the inside of the first sound-absorbing layer 4. Among them, a second sound-absorbing layer 6 is adhesively bonded to the inner surface of the inverted L-shaped ventilation pipe 5. The flue gas cooling and filtering component 1 is also connected to the exhaust pipe of the diesel generator body 2. Through the inverted L-shaped ventilation pipe 5, the air inside the muffler cover 3 can circulate, which is convenient for the natural heat dissipation of the diesel generator body 2. Because the second sound-absorbing layer 6 is provided in the inverted L-shaped ventilation pipe 5, a large amount of noise will not be transmitted through the inverted L-shaped ventilation pipe 5.

[0017] In this implementation scheme, in combination with the attached Figure 3 As shown in the figure, the flue gas cooling and filtering component 1 includes a flue gas filtering box 11. Inside the flue gas filtering box 11, a first filter screen 12, a second filter screen 13, and a third filter screen 14 are fixedly connected in sequence from right to left in the middle. Installation openings are respectively opened on the front and rear sides in the middle left of the flue gas filtering box 11, and auxiliary exhaust fans 15 are respectively fixedly connected to the inner sides of the installation openings. An air inlet pipe 16 is integrally connected to the opening on the upper middle right of the flue gas filtering box 11, and the upper end of the air inlet pipe 16 is fixedly connected to a flue gas cooling component 17.

[0018] In this implementation scheme, in combination with the attached Figure 4 As shown in the figure, the flue gas cooling component 17 includes a cooling cylinder 171. Conical pipes 172 are integrally connected to the upper and lower ends of the cooling cylinder 171 respectively, and connecting pipes 173 are integrally connected to the outer ends of the conical pipes 172 respectively. Partition plates 174 are integrally connected to the upper and lower sides inside the cooling cylinder 171 respectively, and dispersion conveying pipes 175 are integrally connected longitudinally at the openings around the inner sides between the partition plates 174. An inlet is opened on the front lower side inside the cooling cylinder 171, and an outlet is opened on the rear upper side inside the cooling cylinder 171. Both the inlet and the outlet are located between the partition plates 174. A water inlet pipe 176 is integrally connected to the inside of the inlet, and a water outlet pipe 177 is integrally connected to the inside of the outlet.

[0019] In this implementation scheme, specifically, the diesel generator body 2 is fixedly connected to the middle of the upper part of the flue gas filtering box 11. The muffler cover 3 is also fixedly connected to the middle of the upper part of the flue gas filtering box 11, and the air inlet pipe 16 is arranged inside the muffler cover 3.

[0020] In this embodiment, specifically, the upper end of the intake pipe 16 is fixedly connected to the lower connecting pipe 173; the upper connecting pipe 173 is fixedly connected to the exhaust pipe of the diesel generator body 2.

[0021] In this embodiment, specifically, inverted U-shaped openings are respectively formed on the front and rear sides of the lower right side inside the silencing cover 3.

[0022] In this embodiment, specifically, the lower horizontal sections of the water inlet pipe 176 and the water outlet pipe 177 respectively penetrate through the inverted U-shaped openings.

[0023] In this embodiment, specifically, the first filter screen 12 is made of a stainless steel filter screen and is used to filter larger particles in the flue gas.

[0024] In this embodiment, specifically, the second filter screen 13 is made of a primary efficiency plate air filter screen and is used to filter smaller particles in the flue gas.

[0025] In this embodiment, specifically, the third filter screen 14 is made of an activated carbon air filter cotton net and is used to adsorb harmful substances in the flue gas.

[0026] In this embodiment, specifically, the dispersion delivery pipe 175 is made of an aluminum alloy pipe with a circular cross-section.

[0027] In this embodiment, specifically, the water inlet pipe 176 is connected to the output end of an external chiller through a pipeline.

[0028] In this embodiment, specifically, the water outlet pipe 177 is connected to the input end of an external chiller through a pipeline.

[0029] In this embodiment, specifically, the silencing cover 3 is made of a stainless steel cover with a rectangular cross-section; an operation opening is formed on the lower rear side inside the silencing cover 3, and a door panel is installed inside the operation opening. A fiberglass cotton layer is adhesively bonded to the side of the door panel close to the diesel generator body 2; after the door panel is opened, the operator can operate the diesel generator body 2.

[0030] In this embodiment, specifically, both the first sound-absorbing layer 4 and the second sound-absorbing layer 6 are made of fiberglass cotton layers and play a role in sound absorption.

[0031] In this embodiment, specifically, the auxiliary exhaust fan 15 is electrically connected to an external control panel.

[0032] In this implementation scheme, during the operation of the diesel generator body 2, diesel flue gas will enter the cooling cylinder 171 through the exhaust pipe and the connecting pipe 173. Subsequently, the diesel flue gas will be dispersed into the interior of the dispersion conveying pipe 175. At this time, the dispersion conveying pipe 175 will absorb the heat of the diesel flue gas, thereby reducing the temperature of the diesel flue gas. Since the external chiller can continuously inject cooling water into the cooling cylinder 171 through the pipeline and the water inlet pipe 176, the cooling water will continuously absorb the heat of the dispersion conveying pipe 175. Furthermore, the dispersion conveying pipe 175 can continuously absorb the heat of the diesel flue gas, thereby achieving the effect of cooling the diesel flue gas. Subsequently, the cooling water that has absorbed heat will enter the chiller again through the water outlet pipe 177 and the pipeline for cooling. After the diesel flue gas is cooled, it will enter the flue gas filtration box 11 through the intake pipe 16. Subsequently, the diesel flue gas will sequentially pass through the first filter screen 12, the second filter screen 13, and the third filter screen 14 from right to left, thereby removing a large amount of particles and harmful substances in the diesel flue gas. Finally, the diesel flue gas will be discharged through the auxiliary exhaust fan 15. During the process of treating the flue gas, the operator can control the start of the auxiliary exhaust fan 15 through the external control panel, so that the auxiliary exhaust fan 15 sucks the air in the flue gas filtration box 11, thereby assisting in discharging the diesel flue gas and avoiding the problem that the normal operation of the diesel generator body 2 is affected due to excessive pressure on the right side of the flue gas filtration box 11. Compared with the prior art, the utility model can introduce the diesel flue gas into the flue gas filtration box 11 for treatment, thereby effectively avoiding the problem of the silencing structure being polluted by the flue gas, and further avoiding the problem that the silencing effect of the silencing structure is affected.

[0033] Any technical solution using the technical solution described in the present utility model, or a technical solution designed by those skilled in the art inspired by the technical solution of the present utility model and achieving the above technical effects, shall fall within the protection scope of the present utility model.

Claims

1. A muffler for a diesel generator, comprising a flue gas cooling and filtering assembly (1), characterized in that: The middle part of the upper part of the flue gas cooling filter assembly (1) is fixedly connected to the diesel generator body (2); the middle part of the upper part of the flue gas cooling filter assembly (1) is fixedly connected to the silencer cover (3), and the silencer cover (3) is buckled on the outer side of the diesel generator body (2); the inner surface of the silencer cover (3) is glued with a first sound absorption layer (4); the middle upper openings on the front and rear sides of the silencer cover (3) are respectively fixedly connected to inverted L-shaped ventilation pipes (5), and the inverted L-shaped ventilation pipes (5) respectively penetrate the inside of the first sound absorption layer (4), wherein the inner surface of the inverted L-shaped ventilation pipes (5) is glued with a second sound absorption layer (6); the flue gas cooling filter assembly (1) is also connected to the exhaust pipe of the diesel generator body (2).

2. The muffler of a diesel generator as claimed in claim 1, characterized in that: The flue gas cooling filter assembly (1) comprises a flue gas filter box (11), wherein a first filter screen (12), a second filter screen (13) and a third filter screen (14) are fixedly connected in sequence from right to left in the middle portion of the interior of the flue gas filter box (11); installation openings are respectively provided on the front and rear sides of the left side of the interior of the flue gas filter box (11), and auxiliary exhaust fans (15) are respectively fixedly connected to the inner sides of the installation openings; an air intake pipe (16) is integrally connected to the opening on the right side of the upper part of the flue gas filter box (11), and a flue gas cooling assembly (17) is fixedly connected to the upper end of the air intake pipe (16).

3. The muffler of a diesel generator as claimed in claim 2, characterized in that: The flue gas cooling component (17) comprises a cooling tube (171), wherein the upper and lower ends of the cooling tube (171) are respectively integrally connected with a conical tube (172), and the outer ends of the conical tube (172) are respectively integrally connected with a connecting tube (173); the upper and lower sides of the cooling tube (171) are respectively integrally connected with partition plates (174), and the openings of the inner peripheral parts between the partition plates (174) are respectively longitudinally integrally connected with a dispersion conveying pipe (175); a water inlet is provided at the front lower side of the cooling tube (171), and a water outlet is provided at the rear upper side of the cooling tube (171); the water inlet and the water outlet are both located between the partition plates (174); the water inlet is integrally connected with a water inlet pipe (176); and the water outlet is integrally connected with a water outlet pipe (177).

4. The muffler of a diesel generator as claimed in claim 2, characterized in that: The diesel generator body (2) is fixedly connected to the upper middle portion of the flue gas filter box (11), and a silencer cover (3) is also fixedly connected to the upper middle portion of the flue gas filter box (11), and an air intake pipe (16) is arranged on the inner side of the silencer cover (3).

5. The muffler of a diesel generator as claimed in claim 3, characterized in that: The upper end of the air intake pipe (16) is fixedly connected to the connecting pipe (173) on the lower side; the connecting pipe (173) on the upper side is fixedly connected to the exhaust pipe of the diesel generator body (2).

6. The muffler of a diesel generator as claimed in claim 1, characterized in that: Inverted U-shaped openings are respectively provided on the front and rear sides of the lower right side of the interior of the silencer cover (3).

7. The muffler of a diesel generator as claimed in claim 3, characterized in that: The lower horizontal sections of the water inlet pipe (176) and the water outlet pipe (177) respectively penetrate the inverted U-shaped opening.

Images