An interchangeable smoke exhaust and silencing device for a locomotive

Abstract

The present invention discloses an interchangeable smoke exhaust and silencing device for a locomotive, which includes a pressure stabilizing box and a smoke exhaust and silencing mechanism; the bottom inlet of the pressure stabilizing box is connected to the exhaust port of the diesel engine waste gas, and the smoke exhaust and silencing mechanism includes both a smoke exhaust chimney and a silencer; the silencer is arranged to be interchangeable with the smoke exhaust chimney. The smoke exhaust and silencing device of the present invention is designed based on the locomotive product with unified interfaces and similar auxiliary structures, and can realize the interchange of the smoke exhaust chimney and the silencer to meet the different user requirements.

Description

Technical Field

[0001] The present invention relates to transportation equipment, and particularly to an interchangeable smoke exhaust and noise reduction device for locomotives. Background Art

[0002] For traditional diesel locomotive products in our country, the exhaust gas discharged from the diesel engine is led out of the vehicle through the installation of an exhaust chimney. The exhaust chimney only serves to discharge the exhaust gas of the diesel engine and the exhaust gas of the oil-gas separator out of the vehicle. However, in recent years, with the increasing requirements for noise reduction in domestic rail transit products, more and more diesel locomotives, especially some products such as diesel locomotives that may operate at urban passenger stations and shunting locomotives, need to install a muffler to replace the traditional exhaust chimney structure to achieve the purpose of reducing noise.

[0003] Existing models with installed mufflers are all customized products for specific users. At the beginning of product design, customized designs for the size and interfaces of the mufflers are carried out, and it is impossible to install a muffler by replacing the components of the exhaust chimney. Therefore, when the product is recommended to other users without low-noise requirements, due to the inability to meet their needs for low cost and low configuration, only re-design can be carried out.

[0004] Therefore, researching and developing an interchangeable smoke exhaust and noise reduction device for locomotives, where the muffler and the exhaust chimney can be interchanged, can meet the needs of different users and will surely have greater market potential. Summary of the Invention

[0005] The purpose of the present invention is to provide an interchangeable smoke exhaust and noise reduction device for locomotives, where the muffler and the exhaust chimney can be interchanged according to needs, meeting the needs of different users and having greater market potential.

[0006] The purpose of the present invention is to provide an interchangeable smoke exhaust and noise reduction device for locomotives, including a pressure stabilizing tank and a smoke exhaust and noise reduction mechanism; the bottom inlet of the pressure stabilizing tank is connected to the exhaust gas outlet of the diesel engine. Among them,

[0007] The smoke exhaust and noise reduction mechanism includes both an exhaust chimney and a muffler; the muffler is arranged to be interchangeable with the exhaust chimney;

[0008] When the smoke exhaust and noise reduction mechanism is an exhaust chimney, it further includes a first movable top cover, the first movable top cover is detachably connected to the top side of the power chamber, and a first exhaust port is provided on the first movable top cover; the outlet of the pressure stabilizing tank is connected to the inlet side of the exhaust chimney through a corrugated pipe, the inlet side of the exhaust chimney is connected to the outlet of the diesel engine oil-gas separator through a hose assembly; the top outlet of the exhaust chimney is detachably connected to the first exhaust port;

[0009] When the smoke exhaust and noise reduction mechanism is a muffler, it further includes a second movable top cover, which is detachably connected to the top side of the power chamber. A second exhaust port is provided on the second movable top cover; the outlet of the pressure stabilizing tank is connected to the inlet side of the muffler through a corrugated pipe, the inlet side of the muffler is connected to the outlet of the diesel engine oil and gas separator through a hose assembly, and the top outlet of the muffler is detachably connected to the second exhaust port.

[0010] For an interchangeable smoke exhaust and noise reduction device for a locomotive according to the present invention, preferably, it further includes a drainage mechanism, and the drainage mechanism is configured to drain the water in the smoke exhaust and noise reduction mechanism to the outside of the locomotive.

[0011] For an interchangeable smoke exhaust and noise reduction device for a locomotive according to the present invention, preferably, the drainage mechanism includes water collection boxes respectively provided at the bottoms of the exhaust chimney and the muffler. The water collection boxes are connected to the inlets of the drain pipes through metal hoses. The drain pipes are embedded in the side wall of the locomotive body, and the outlets of the drain pipes extend to the outside of the side wall of the locomotive body.

[0012] For an interchangeable smoke exhaust and noise reduction device for a locomotive according to the present invention, preferably, the metal hose and the drain pipe are connected through a threaded joint.

[0013] For an interchangeable smoke exhaust and noise reduction device for a locomotive according to the present invention, preferably, the corrugated pipe is a metal corrugated pipe, and a pipe clamp fixing structure is provided on the outside of the metal corrugated pipe.

[0014] For an interchangeable smoke exhaust and noise reduction device for a locomotive according to the present invention, preferably, the outside of the smoke exhaust and noise reduction mechanism is covered with a heat insulation sleeve.

[0015] For an interchangeable smoke exhaust and noise reduction device for a locomotive according to the present invention, preferably, the guiding mechanism includes a guiding plate extending along a predetermined inclination angle provided in the upper cavity of the exhaust chimney or the muffler, and the guiding plate guides the exhaust gas to both sides of it.

[0016] For an interchangeable smoke exhaust and noise reduction device for a locomotive according to the present invention, preferably, it further includes a muffler reserved bearing beam, which is provided inside the locomotive power chamber, and the muffler reserved bearing beam is configured to be able to install and fix the muffler.

[0017] For an interchangeable smoke exhaust and noise reduction device for a locomotive according to the present invention, preferably, a porous noise reduction unit is provided inside the muffler.

[0018] The beneficial effects of the present invention are:

[0019] The smoke exhaust and silencing device of the present invention is designed based on locomotive products with unified interfaces and similar auxiliary structures, enabling the interchange of the smoke stack and the silencer, so that the locomotive can conveniently replace the configuration between the smoke stack and the silencer to meet different user requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other embodiments can be obtained based on these drawings.

[0021] Figure 1 Structural schematic diagram of the interchangeable smoke exhaust and silencing device for locomotive of the present invention when using a smoke stack Figure 1 。

[0022] Figure 2 Structural schematic diagram of the interchangeable smoke exhaust and silencing device for locomotive of the present invention when using a smoke stack Figure 2 。

[0023] Figure 3 Structural schematic diagram of the interchangeable smoke exhaust and silencing device for locomotive of the present invention when using a smoke stack and installed in the locomotive power chamber.

[0024] Figure 4 Structural schematic diagram of the interchangeable smoke exhaust and silencing device for locomotive of the present invention when using a silencer and installed in the locomotive power chamber Figure 1 。

[0025] Figure 5 Structural schematic diagram of the interchangeable smoke exhaust and silencing device for locomotive of the present invention when using a silencer and installed in the locomotive power chamber Figure 2 。

[0026] Figure 6 Structural schematic diagram of the flow guiding mechanism provided in the smoke stack of the present invention.

[0027] Figure 7 Structural schematic diagram of the flow guiding mechanism provided in the silencer of the present invention.

[0028] Among them, 1 - pressure stabilizing tank, 2 - pipe clamp, 3 - docking part of the first movable top cover exhaust port, 4 - exhaust chimney, 5 - hose assembly, 6 - metal hose, 7 - diesel engine oil and gas separator, 8 - first water collecting box, 9 - metal bellows, 10 - diesel engine exhaust gas outlet, 11 - silencer, 12 - second movable top cover, 13 - reserved bearing beam for silencer, 15 - docking part of the second movable top cover exhaust port, 16 - exhaust passage, 17 - flow guiding mechanism, 19 - second water collecting box, 20 - first movable top cover. Specific embodiments

[0029] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the following further elaborates on the embodiments of the present invention in detail in conjunction with specific embodiments and with reference to the accompanying drawings.

[0030] It should be noted that all the expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two entities or parameters with the same name but different identities. It can be seen that "first" and "second" are only for the convenience of expression and should not be construed as limitations on the embodiments of the present invention. This will not be elaborated one by one in the subsequent embodiments.

[0031] The power room of a diesel locomotive is generally a steel structure of a hooded car body. The diesel engine is mainly placed in the power room, and the exhaust gas outlet of the diesel engine needs to be connected to the outside to discharge the exhaust gas outside the car. The traditional exhaust chimney of a diesel locomotive only serves to discharge the exhaust gas of the diesel engine and the exhaust gas of the oil and gas separator outside the car. If the purpose of noise reduction is to be achieved, it is necessary to redesign the installation and connection structure of the silencer. Currently, the silencer installed on a diesel locomotive is a customized product. The interfaces, dimensions, and structures of the silencer are designed together with the entire locomotive and cannot be compatible with the configuration scheme of the exhaust chimney, that is, it cannot be interchanged with the existing exhaust chimney implementation scheme.

[0032] To solve the above problems, the smoke exhaust and noise reduction device of the present invention is introduced in detail below:

[0033] (1)An interchangeable smoke exhaust and noise elimination device for a locomotive of the present invention includes a pressure stabilizing box and a smoke exhaust and noise elimination mechanism. The bottom inlet of the pressure stabilizing box is connected to the exhaust port of the diesel engine waste gas. The smoke exhaust and noise elimination mechanism includes a smoke exhaust chimney and a muffler; the muffler is arranged to be interchangeable with the smoke exhaust chimney; when the smoke exhaust and noise elimination mechanism is the smoke exhaust chimney, it further includes a first movable top cover, and the first movable top cover is detachably connected to the top side of the power chamber, and a first exhaust port is provided on the first movable top cover; the outlet of the pressure stabilizing box is connected to the inlet side of the smoke exhaust chimney through a corrugated pipe, and the inlet side of the smoke exhaust chimney is connected to the outlet of the diesel engine oil and gas separator through a hose assembly; the top outlet of the smoke exhaust chimney is detachably connected to the first exhaust port of the first movable top cover; when the smoke exhaust and noise elimination mechanism is the muffler, it further includes a second movable top cover, the second movable top cover is detachably connected to the top side of the power chamber, and a second exhaust port is provided on the second movable top cover; the outlet of the pressure stabilizing box is connected to the inlet side of the muffler through a corrugated pipe, the inlet side of the muffler is connected to the outlet of the diesel engine oil and gas separator through a hose assembly, and the top outlet of the muffler is detachably connected to the second exhaust port of the second movable top cover. Among them, the positions of the first exhaust port and the second exhaust port relative to the center of the power chamber are different.

[0034] In order to match the exhaust ports at different positions of the smoke exhaust chimney and the muffler and ensure the interchangeability of the two sets of configurations, according to the different positions of the exhaust ports of the smoke exhaust chimney and the muffler, two sets of movable top covers are provided, and exhaust ports at different positions are provided on different movable top covers to respectively match the outlet position requirements of the smoke exhaust chimney and the muffler. During installation, just match the corresponding movable top cover for installation.

[0035] In the present invention, the pressure stabilizing box can not only play the main role of connecting the exhaust port of the diesel engine supercharger and the smoke exhaust chimney or the muffler to discharge the waste gas. At the same time, it can also play the role of stabilizing the waste gas pressure. Especially in the case of the muffler configuration, it will not generate a large local pressure difference inside the muffler to form a local back pressure, affecting the normal operation of the diesel engine.

[0036] In the present invention, when the smoke exhaust and noise elimination mechanism is the muffler, the waste gas realizes the noise elimination characteristic in the muffler, so that the noise outside the vehicle can be reduced by at least 5 - 10 decibels. The muffler is internally provided with a porous noise elimination unit.

[0037] In the present invention, the corrugated pipe is a metal corrugated pipe, and pipe clamp fixing structures are provided at both ends of the metal corrugated pipe. The metal corrugated pipe mainly plays the role of connecting the pressure stabilizing box and the smoke exhaust chimney or the muffler. Using the structure of the metal corrugated pipe can, on the one hand, eliminate the installation and manufacturing errors of the smoke exhaust chimney or the muffler and improve production efficiency. On the other hand, it can also effectively block the vibration during the operation of the diesel engine and prevent fatigue damage or even cracks at the connection of the smoke exhaust chimney or the muffler.

[0038] The present invention also includes a drainage mechanism, which is configured to discharge the water in the smoke exhaust and silencer mechanism to the outside of the locomotive. Preferably, the drainage mechanism includes a water collecting box respectively arranged at the bottom of the smoke exhaust chimney and the silencer, and the water collecting boxes on the smoke exhaust chimney and the silencer can be connected to the inlet of the drain pipe through a metal hose. The drain pipe is pre-buried in the side wall of the locomotive body, and the outlet of the drain pipe extends to the outside of the side wall of the locomotive body. More preferably, the metal hose is connected to the drain pipe through a threaded joint. The smoke exhaust chimney and the lower part of the silencer in the smoke exhaust and silencer mechanism are designed with a water collecting box of the same structure, so that rainwater entering the smoke exhaust and silencer mechanism can quickly flow into the water collecting box and will not enter the power room and the diesel engine. The water in the water collecting box is quickly discharged to the outside of the vehicle through the drainage metal hose and the drain pipe pre-buried on the side wall of the vehicle body.

[0039] In the present invention, the outer side of the smoke exhaust silencer is covered with a heat insulation sleeve. Since the temperature of diesel engine exhaust gas can reach 400℃~500℃, the heat insulation sleeve is wrapped on the outside of the smoke exhaust silencer. The heat insulation sleeve is mainly made of non-asbestos inorganic fiber products, and is made according to the external dimensions of the voltage stabilizer box, bellows, smoke exhaust chimney, silencer and drain pipe. The surface of the above components is wrapped so that the outer surface temperature of the wrapping layer is effectively reduced under the normal working state of the locomotive, which reduces the working environment temperature of the power room while preventing human body from being harmed.

[0040] (2) The interchangeable smoke exhaust and silencer device for a locomotive of the present invention further includes a guide mechanism, wherein the guide mechanism is configured to discharge the exhaust gas discharged from the smoke exhaust and silencer mechanism upward at a predetermined angle.

[0041] Most of the existing domestic diesel locomotive exhaust ports exhaust gas vertically upward. This exhaust method causes the high temperature of the exhaust gas and the accompanying impurities to pose a great safety hazard to the high-voltage contact network of the line. In order to reduce the impact of the exhaust gas of the internal combustion base on the contact network, the present invention sets a top guide structure and designs the guide plate so that the exhaust gas is not discharged directly vertically upward, but is discharged obliquely upward at a certain angle, thereby reducing the harm of the exhaust gas to the contact network.

[0042] In the present invention, the guide mechanism comprises a guide plate which is arranged in the chimney or the upper cavity of the muffler and extends along a predetermined inclination angle, and the guide plate enables the exhaust gas to be discharged obliquely upward at a certain angle.

[0043] In the present invention, a reserved load-bearing beam for the muffler is also provided, and the reserved load-bearing beam for the muffler is arranged inside the power room of the locomotive, and the reserved load-bearing beam for the muffler is arranged to be able to install and fix the muffler.

[0044] The steps for exchanging the smoke exhaust and silencer device of the present invention are as follows:

[0045] When the exhaust chimney is replaced with a silencer, first remove the insulation sleeve, metal hose and oil-gas separator connecting hose assembly. Remove the connection structure between the first movable top cover and the locomotive power room, and remove the first movable top cover together with the exhaust chimney through the lifting device. Then hoist the silencer body into the locomotive power room and place it on the installation beam. Since the weight of the silencer is 2 to 3 times the weight of the exhaust chimney, the silencer is installed through the reserved bearing beam of the silencer on the steel structure of the power room. After installing the silencer, install the second movable top cover to cover the top opening of the power room, and connect the silencer outlet to the second exhaust port. Then connect the voltage regulator box and the silencer through the same metal bellows and buckle. Finally, install the oil-gas separator hose, drainage metal hose, insulation sleeve and other accessories. In this way, the conversion of the exhaust chimney to the silencer is realized.

[0046] When the muffler is replaced with an exhaust chimney, the steps are basically the same as above.

[0047] Example 1

[0048] like Figures 1-5 As shown, the present embodiment provides an interchangeable smoke exhaust and silencer device for a locomotive, which specifically includes the following structure:

[0049] The invention comprises a pressure stabilizing box 1 and a smoke exhaust and silencer mechanism; the bottom inlet of the pressure stabilizing box 1 is connected to the exhaust port 10 of the diesel engine, the top opening of the locomotive power room is detachably connected to the first movable top cover 20 or the second movable top cover 12, the first movable top cover 20 is provided with a first exhaust port, the first movable top cover exhaust port docking portion 3 arranged on the exhaust chimney 4 can be docked with the first exhaust port on the first movable top cover 20, the second movable top cover 12 is provided with a second exhaust port, the second movable top cover exhaust port docking portion 15 arranged on the silencer 11 can be docked with the second exhaust port on the second movable top cover 12, wherein,

[0050] The smoke exhaust and silencer mechanism includes both the smoke exhaust chimney 4 and the silencer 11; the silencer 11 and the smoke exhaust chimney 4 can be interchanged in the following manner;

[0051] When the smoke exhaust and silencer mechanism of the locomotive adopts an exhaust chimney 4; the outlet of the pressure stabilizing box 1 is connected to the inlet side of the exhaust chimney through a metal bellows 9, both ends of the metal bellows 9 are fixed by pipe clamps 2 respectively, and the inlet side of the exhaust chimney 4 is connected to the outlet of the diesel engine oil-gas separator 7 through a hose assembly 5; a first movable top cover 20 is detachably installed on the top side of the power room of the locomotive, and the top outlet of the exhaust chimney 4 is detachably connected to the first movable top cover 20; a first water collecting box 8 is provided at the bottom of the exhaust chimney 4, and the first water collecting box 8 is connected to the inlet of the drain pipe through a metal hose 6, the drain pipe is pre-buried in the side wall of the locomotive body, and the outlet of the drain pipe extends to the outside of the side wall of the locomotive body, and the metal hose 6 is connected to the drain pipe through a threaded joint.

[0052] When the smoke exhaust and silencer mechanism of the locomotive adopts a silencer 11; the outlet of the voltage stabilizing box 1 is connected to the inlet side of the silencer 11 through a metal bellows 9, and the two ends of the metal bellows 9 are respectively fixed by pipe clamps 2; the inlet side of the silencer 11 is connected to the outlet of the diesel engine oil-gas separator 7 through a hose assembly 5; a second movable top cover 12 is detachably installed on the top side of the power room of the locomotive, and the top outlet of the silencer 11 is detachably connected to the second movable top cover 12, and a second water collecting box 19 is provided at the bottom of the silencer 11, and the second water collecting box 19 is connected to the inlet of the drain pipe through a metal hose 6, and the drain pipe is pre-buried in the side wall of the locomotive body, and the outlet of the drain pipe extends to the outside of the side wall of the locomotive body, and the metal hose 6 is connected to the drain pipe through a threaded joint.

[0053] When the smoke exhaust and silencer mechanism of the locomotive adopts the silencer 11, the silencer is installed and fixed through the reserved bearing beam 13 of the silencer arranged inside the power room of the locomotive.

[0054] The outer side of the smoke exhaust and silencer mechanism is covered with a heat insulation sleeve (not shown in the figure).

[0055] Example 2

[0056] The hybrid car of this embodiment has the same structure as that of the first embodiment except for the following structure.

[0057] It also includes a guide mechanism 17, which can guide the exhaust gas discharged from the smoke exhaust and silencer mechanism to be discharged upward at a predetermined angle, and its specific structure is as follows:

[0058] The flow guiding mechanism 17 includes a flow guiding plate. Figure 6 The guide plate is provided at the upper part of the cavity of the exhaust chimney 4. There may be multiple guide plates, one of which is provided at the middle position of the internal passage of the exhaust chimney 4, and is V-shaped. The guide plate forms an exhaust passage 16 extending along a predetermined inclination angle at the upper part of the internal passage of the exhaust chimney 4, and the exhaust passage 16 may extend in two different directions. Other guide plates may also be provided in the exhaust passage 16. Figure 7 A guide plate is shown disposed in the cavity of the muffler 11 and near the top thereof. Similar to the guide plate of the chimney 4, the guide plate can be disposed in the middle of the internal passage of the muffler 11 and can be V-shaped.

[0059] The gas flowing vertically upward in the exhaust chimney 4 or the silencer 11 is divided by the guide mechanism 17 and discharged obliquely along each inclined exhaust passage 16, thereby reducing the harm of the exhaust gas to the contact network.

[0060] It should be particularly noted that each component or step in the above-mentioned embodiments can be mutually crossed, replaced, added, or deleted. Therefore, the combinations formed by these reasonable permutations and combinations should also fall within the protection scope of the present invention, and the protection scope of the present invention should not be limited to the said embodiments.

[0061] The above are exemplary embodiments disclosed by the present invention. The order of disclosure of the above embodiments of the present invention is only for description and does not represent the superiority or inferiority of the embodiments. However, it should be noted that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of disclosure of the embodiments of the present invention (including the claims) is limited to these examples. Without departing from the scope defined by the claims, various changes and modifications can be made. The functions, steps, and / or actions of the method claims according to the disclosed embodiments herein do not need to be performed in any specific order. In addition, although the elements disclosed in the embodiments of the present invention can be described or claimed in individual form, they can also be understood as plural unless explicitly limited to the singular.

[0062] Those of ordinary skill in the art should understand that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of disclosure of the embodiments of the present invention (including the claims) is limited to these examples; under the concept of the embodiments of the present invention, the technical features in the above embodiments or different embodiments can also be combined, and there are many other variations in different aspects of the embodiments of the present invention as described above, and they are not provided in detail for the sake of brevity. Therefore, any omission, modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the present invention shall be included within the protection scope of the embodiments of the present invention.

Claims

1. An interchangeable smoke exhaust and noise elimination device for a locomotive, characterized in that, it includes a pressure stabilizing box and a smoke exhaust and noise elimination mechanism; the bottom inlet of the pressure stabilizing box is connected to the exhaust port of the diesel engine waste gas, where, the smoke exhaust and noise elimination mechanism includes both a smoke exhaust chimney and a silencer; the silencer is arranged to be interchangeable with the smoke exhaust chimney; when the smoke exhaust and noise elimination mechanism is the smoke exhaust chimney, it further includes a first movable top cover, the first movable top cover is detachably connected to the top side of the power chamber, and a first exhaust port is provided on the first movable top cover; the outlet of the pressure stabilizing box is connected to the inlet side of the smoke exhaust chimney through a corrugated pipe, and the inlet side of the smoke exhaust chimney is connected to the outlet of the diesel engine oil-gas separator through a hose assembly; the top outlet of the smoke exhaust chimney is detachably connected to the first exhaust port of the first movable top cover; when the smoke exhaust and noise elimination mechanism is the silencer, it further includes a second movable top cover, the second movable top cover is detachably connected to the top side of the power chamber, and a second exhaust port is provided on the second movable top cover; the outlet of the pressure stabilizing box is connected to the inlet side of the silencer through a corrugated pipe, the inlet side of the silencer is connected to the outlet of the diesel engine oil-gas separator through a hose assembly, and the top outlet of the silencer is detachably connected to the second exhaust port of the second movable top cover.

2. An interchangeable smoke exhaust and noise elimination device for a locomotive according to claim 1, characterized in that, it further includes a drainage mechanism, and the drainage mechanism is arranged to drain the water in the smoke exhaust and noise elimination mechanism to the outside of the locomotive.

3. An interchangeable smoke exhaust and noise elimination device for a locomotive according to claim 2, characterized in that, the drainage mechanism includes water collecting boxes respectively arranged at the bottoms of the smoke exhaust chimney and the silencer, the water collecting boxes are connected to the inlet of the drain pipe through metal hoses, the drain pipe is embedded in the side wall of the locomotive body, and the outlet of the drain pipe extends to the outside of the side wall of the locomotive body.

4. An interchangeable smoke exhaust and noise elimination device for a locomotive according to claim 3, characterized in that, the metal hose is connected to the water drainage port of the water collecting box and the embedded drain pipe through a threaded joint.

5. An interchangeable smoke exhaust and noise elimination device for a locomotive according to claim 1, characterized in that, the corrugated pipe is a metal corrugated pipe, and pipe clamp fixing structures are provided at both ends of the metal corrugated pipe.

6. An interchangeable smoke exhaust and noise elimination device for a locomotive according to claim 1, characterized in that, the outside of the smoke exhaust and noise elimination mechanism is coated with a heat insulation sleeve.

7. An interchangeable smoke exhaust and noise elimination device for a locomotive according to claim 1, characterized in that, it further includes a diversion mechanism, and the diversion mechanism is arranged to discharge the waste gas discharged from the smoke exhaust and noise elimination mechanism obliquely upward at a predetermined angle.

8. An interchangeable smoke exhaust and noise elimination device for a locomotive according to claim 7, characterized in that, the diversion mechanism includes a diversion plate extending along a predetermined inclination angle arranged in the upper cavity of the smoke exhaust chimney or the silencer.

9. An interchangeable smoke exhaust and noise elimination device for a locomotive according to claim 1, characterized in that, it further includes a silencer reserved bearing beam, the silencer reserved bearing beam is arranged inside the locomotive power chamber, and the silencer reserved bearing beam is arranged to be able to install and fix the silencer.

10. An interchangeable smoke exhaust and silencing device for a locomotive according to claim 1, characterized in that, a porous silencing unit is provided inside the silencer.

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