Water-cooling silencer of ultra-silence generator set

Abstract

The utility model belongs to the technical field of generators, and particularly relates to a water-cooling silencer of an ultra-silence generator set, which comprises a silencer shell, the bottom of the silencer shell is communicated with a liquid inlet pipe, and the rear side wall of the silencer shell is communicated with a liquid outlet pipe; the silencer inner shell is located in the silencer outer shell, and a water cooling cavity is formed between the silencer inner shell and the silencer outer shell. The water channel separation mechanism is arranged in the water cooling cavity, is used for extending the water channel and is also used for connecting the silencer outer shell and the silencer inner shell; a partition plate assembly is arranged in the silencer inner shell, the silencer inner shell forms a first sound expansion cavity and a second sound expansion cavity through the partition plate assembly, and the first sound expansion cavity and the second sound expansion cavity are distributed at intervals from top to bottom. The noise reduction assembly comprises a first noise reduction pipe, a second noise reduction pipe and a third noise reduction pipe, and according to the scheme, the noise reduction device has the remarkable cooling effect, and meanwhile the noise reduction effect is better.

Description

Technical Field

[0001] The utility model belongs to the technical field of generators, and in particular relates to a water-cooled muffler for an ultra-quiet generator set. Background Art

[0002] Traditional generator set mufflers primarily reduce noise levels by absorbing and reflecting sound waves. These typically employ a single or simple multi-chamber structure, combined with sound-absorbing materials. However, with increasing demands for environmental protection and quality of life, the market demand for quieter and more efficient generator sets is growing. Traditional mufflers, while providing noise reduction treatment, do not reduce exhaust gas temperatures, with surface temperatures reaching as high as 500°C. Installing such a muffler in a fully enclosed generator silencer chamber would result in extremely high temperatures, preventing the generator set from operating normally. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a water-cooled muffler for an ultra-quiet generator set to solve the problem that the existing muffler does not reduce the exhaust temperature after noise reduction treatment of the exhaust gas, and its surface temperature is as high as 500°C. When such a muffler is installed in a fully enclosed generator silent chamber, the temperature of the entire chamber will become extremely high, and the generator set cannot operate normally.

[0004] The technical solution adopted by the utility model is as follows: a water-cooled muffler for an ultra-quiet generator set, comprising a muffler shell, a liquid inlet pipe connected to the bottom of the muffler shell, and a liquid outlet pipe connected to the rear side wall of the muffler shell;

[0005] A muffler inner shell, the muffler inner shell is located inside the muffler outer shell, and a water cooling cavity is formed between the muffler inner shell and the muffler outer shell for passing a coolant;

[0006] A water channel dividing mechanism, which is arranged in the water cooling chamber and is used to extend the water channel and connect the muffler outer shell and the muffler inner shell;

[0007] A partition assembly is provided in the inner shell of the muffler, and the inner shell of the muffler forms a first sound expansion chamber and a second sound expansion chamber through the partition assembly, and the first sound expansion chamber and the second sound expansion chamber are spaced apart from each other from top to bottom;

[0008] The silencer assembly is arranged on the baffle assembly and is used to silence the exhaust gas.

[0009] Furthermore, the partition assembly includes a first partition, a second partition and a third partition, all of which are fixedly installed on the inner shell of the muffler. The first partition, the second partition and the third partition are spaced apart from each other from top to bottom. A first installation cavity is formed between the inner top wall of the muffler inner shell and the first partition, a first sound expansion cavity is formed between the first partition and the second partition, a second installation cavity is formed between the second partition and the third partition, and a second sound expansion cavity is formed between the third partition and the inner bottom wall of the muffler inner shell.

[0010] Furthermore, the waterway separation mechanism includes a layered plate, a connecting plate, a first separation component and a second separation component;

[0011] The front and rear outer side walls of the muffler inner shell are both fixedly connected with layered plates, the two layered plates are horizontally distributed and arranged opposite to each other, and the right ends of the two layered plates are fixedly connected by a connecting plate;

[0012] Two groups of the first partition components are provided and are both located below the layered plate. The two groups of the first partition components are respectively fixedly connected to the front and rear outer side walls of the muffler inner shell. The first partition component includes a first right partition plate and a first left partition plate spaced apart from each other from right to left. The lower end of the first right partition plate is fixedly connected to the inner bottom wall of the muffler inner shell, the upper end of the first right partition plate is spaced apart from the layered plate, the upper end of the first left partition plate is fixedly connected to the bottom of the layered plate, and the lower end of the first left partition plate is spaced apart from the inner bottom wall of the muffler inner shell.

[0013] Two groups of the second partition assembly are provided and are both located above the layered plate. The two groups of the second partition assembly are respectively fixedly connected to the front and rear outer side walls of the muffler inner shell. The second partition assembly includes a second right partition plate and a second left partition plate spaced apart from each other from right to left. The lower end of the second right partition plate is fixedly connected to the top of the layered plate, the upper end of the second right partition plate is spaced apart from the inner top wall of the muffler inner shell, the upper end of the second left partition plate is fixedly connected to the inner top wall of the muffler inner shell, and the lower end of the second left partition plate is spaced apart from the top of the layered plate.

[0014] The outer ends of the layered plate, the connecting plate, the first right partition plate, the first left partition plate, the second right partition plate and the second left partition plate are all fixedly connected to the inner side wall of the muffler shell.

[0015] Furthermore, the water channel separation mechanism also includes a support plate, and several support plates are provided. The several support plates are respectively fixedly connected to the upper and lower outer walls of the muffler inner shell, and the outer ends of the support plates are fixedly connected to the inner wall of the muffler outer shell.

[0016] Further, the baffle assembly comprises a first baffle, a second baffle and a third baffle which are fixedly installed on the inner shell of the muffler, and the first baffle, the second baffle and the third baffle are sequentially and spacedly arranged from top to bottom, a first mounting cavity is formed between the inner top wall of the inner shell of the muffler and the first baffle, a first sound expansion cavity is formed between the first baffle and the second baffle, a second mounting cavity is formed between the second baffle and the third baffle, and a second sound expansion cavity is formed between the third baffle and the inner bottom wall of the inner shell of the muffler.

[0017] Further, the muffling assembly comprises a first muffling pipe, a second muffling pipe and a third muffling pipe, the bottom of the muffler is communicated with the first muffling pipe, the air inlet end of the first muffling pipe penetrates through the outer shell of the muffler, the air outlet end of the first muffling pipe is communicated with the first sound expansion cavity, the second muffling pipe and the third muffling pipe are arranged on the baffle assembly, the air inlet end and the air outlet end of the second muffling pipe are respectively communicated with the first sound expansion cavity and the second sound expansion cavity, the third muffling pipe is located between the first muffling pipe and the second muffling pipe, the air inlet end of the third muffling pipe is communicated with the second sound expansion cavity, and the air outlet end of the third muffling pipe penetrates through the first sound expansion cavity, the inner shell of the muffler and the outer shell of the muffler in sequence and extends out of the outer shell of the muffler.

[0018] Further, the first muffling pipe is fixedly installed on the bottom wall of the inner shell of the muffler and located at the right end of the inner shell of the muffler, the air inlet end of the first muffling pipe penetrates through the outer shell of the muffler and extends downward out of the outer shell of the muffler, and the air outlet end of the first muffling pipe penetrates through the third baffle and the second baffle in sequence and is communicated with the first sound expansion cavity upward;

[0019] The second muffling pipe is fixedly installed on the second baffle and the third baffle and located at the left end of the inner shell of the muffler, and the air inlet end and the air outlet end of the second muffling pipe are respectively communicated with the first sound expansion cavity and the second sound expansion cavity;

[0020] The air inlet end of the third muffling pipe is fixedly installed on the third baffle and communicated with the second sound expansion cavity, and the air outlet end of the third muffling pipe penetrates through the second baffle, the first baffle, the first mounting cavity, the inner shell of the muffler and the outer shell of the muffler in sequence and extends out of the outer shell of the muffler.

[0021] The utility model discloses the beneficial effects of:

[0022] The water cooling cavity is formed between the outer shell and the inner shell of the muffler, and cooling liquid is introduced into the water cooling cavity, so that the heat generated in the muffler can be effectively absorbed, a large amount of heat can be quickly taken away, the temperature of the muffler is reduced, the water channel separation mechanism is used for prolonging the water channel and increasing the length of the circulation path of the cooling liquid in the muffler, so that the cooling liquid has more contact time with the high-temperature components, the cooling efficiency is further improved, the water channel separation mechanism not only plays a role of separating the water channel, but also enhances the connection strength between the inner shell and the outer shell of the muffler, and improves the rigidity and stability of the overall structure. Since the surface temperature of the muffler is significantly reduced, when the muffler is installed in the fully-closed generator silencing chamber, the temperature of the entire chamber is not easy to become extremely high, so that the normal operation environment of the generator set and the surrounding equipment is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a whole structure schematic view (front side view) of the utility model;

[0024] Figure 2 It is a whole structure schematic view (rear side view) of the utility model;

[0025] Figure 3 It is an elevation sectional view of the utility model;

[0026] Figure 4 It is a right view sectional view of the utility model;

[0027] Figure 5 It is a three-dimensional structure schematic view (front side view) of the inner shell of the muffler of the utility model;

[0028] Figure 6 It is a three-dimensional structure schematic view (rear side view) of the inner shell of the muffler of the utility model;

[0029] Figure 7 It is a partial sectional view of the inner shell of the muffler of the utility model;

[0030] The drawings are as follows:

[0031] Muffler outer shell 1, liquid inlet pipe 11, liquid outlet pipe 12, muffler inner shell 2, water cooling cavity 3, baffle assembly 4, first baffle 41, second baffle 42, third baffle 43, first sound expansion cavity 5, second sound expansion cavity 6, sound elimination assembly 7, first sound elimination pipe 71, second sound elimination pipe 72, third sound elimination pipe 73, water channel separation mechanism 8, layered plate 81, connecting plate 82, first right separation plate 83, first left separation plate 84, second right separation plate 85, second left separation plate 86, supporting plate 87, water injection assembly 9. DETAILED DESCRIPTION

[0032] The embodiments of the present application will be further described in detail below with reference to the drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0033] In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more than two; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the indicated device or element to have a specific orientation, to be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] Example one:

[0036] As shown in Figures 1-7 A water-cooled silencer of a super-silent generator set, comprising a silencer shell 1, a liquid inlet pipe 11 is communicated at the bottom of the silencer shell 1, a liquid outlet pipe 12 is communicated on the rear wall of the silencer shell 1;

[0037] A silencer inner shell 2, the silencer inner shell 2 is located in the silencer shell 1, a water-cooled cavity 3 is formed between the silencer inner shell 2 and the silencer shell 1 for passing in cooling liquid; in this embodiment, the cooling liquid adopts antifreeze, the main component of antifreeze is usually ethylene glycol or propylene glycol, which is a special liquid for engine cooling, has the ability of anti-rust and anti-low-temperature icing, and is more stable than pure water in high-temperature and high-pressure environment, not easy to produce bubbles or volatilize, ensuring the continuous effectiveness of the cooling system.

[0038] A water channel separation mechanism 8, the water channel separation mechanism 8 is arranged in the water-cooled cavity 3, for prolonging the water channel, and for connecting the silencer shell 1 and the silencer inner shell 2;

[0039] The muffler inner shell 2 is provided with a baffle assembly 4, the muffler inner shell 2 forms a first sound expansion cavity 5 and a second sound expansion cavity 6 through the baffle assembly 4, and the first sound expansion cavity 5 and the second sound expansion cavity 6 are spaced from top to bottom;

[0040] The muffler inner shell 2 is provided with a baffle assembly 4, the muffler inner shell 2 forms a first sound expansion cavity 5 and a second sound expansion cavity 6 through the baffle assembly 4, and the first sound expansion cavity 5 and the second sound expansion cavity 6 are spaced from top to bottom;

[0041] As a preferred scheme, the water channel separation mechanism 8 comprises a layered plate 81, a connecting plate 82, a first separation assembly 4 and a second separation assembly 4; the water cooling cavity 3 is divided into two layers by the layered plate 81 and the connecting plate 82, and the flow channel of the cooling liquid is lengthened.

[0042] The front and rear outer side walls of the muffler inner shell 2 are fixedly connected with the layered plates 81, the two layered plates 81 are horizontally distributed and oppositely arranged, and the right ends of the two layered plates 81 are fixedly connected through the connecting plate 82;

[0043] The first separation assembly is provided with two groups and is located below the layered plate 81, the two groups of the first separation assembly are fixedly connected to the front and rear outer side walls of the muffler inner shell 2, the first separation assembly comprises a first right separation plate 83 and a first left separation plate 84 which are spaced from right to left, the lower end of the first right separation plate 83 is fixedly connected to the inner bottom wall of the muffler inner shell 2, the upper end of the first right separation plate 83 is spaced from the layered plate 81, the upper end of the first left separation plate 84 is fixedly connected to the bottom of the layered plate 81, and the lower end of the first left separation plate 84 is spaced from the inner bottom wall of the muffler inner shell 2; through the cooperation of the first right separation plate 83 and the first left separation plate 84, the cooling liquid of the front and rear outer side walls of the lower part of the muffler inner shell 2 forms an "S" shape flow route and is collected to the upper layer of the water cooling cavity 3 above the layered plate 81, that is, the upper layer of the water cooling cavity 3.

[0044] The second separation assembly is provided with two groups and is located above the layered plate 81, the two groups of the second separation assembly are fixedly connected to the front and rear outer side walls of the muffler inner shell 2, the second separation assembly comprises a second right separation plate 85 and a second left separation plate 86 which are spaced from right to left, the lower end of the second right separation plate 85 is fixedly connected to the top of the layered plate 81, the upper end of the second right separation plate 85 is spaced from the inner top wall of the muffler inner shell 2, the upper end of the second left separation plate 86 is fixedly connected to the inner top wall of the muffler inner shell 2, and the lower end of the second left separation plate 86 is spaced from the top of the layered plate 81; through the cooperation of the second right separation plate 85 and the second left separation plate 86, the cooling liquid of the front and rear outer side walls of the upper part of the muffler inner shell 2 forms an "S" shape flow route and is collected to the liquid outlet pipe 12 and then flows out.

[0045] The outer ends of the layered plate 81, the connecting plate 82, the first right partition plate 83, the first left partition plate 84, the second right partition plate 85, and the second left partition plate 86 are fixedly connected to the inner side wall of the muffler outer shell 1. The layered plate 81, the connecting plate 82, and the plurality of partition plate assemblies 4 not only serve to separate the water channel, but also enhance the connection strength between the inner and outer shells of the muffler, improve the rigidity and stability of the overall structure, and reduce the risk of deformation caused by long-term vibration or temperature changes.

[0046] The water cooling cavity 3 is divided into two layers by the layered plate 81 and the connecting plate 82, and the cooling liquid is guided to form a complex "S" shape route by the first partition assembly and the second partition assembly. This design greatly increases the flow path length of the cooling liquid in the muffler, allowing the cooling liquid to have more contact time with high-temperature components, thereby improving the heat exchange efficiency. The complex water channel design ensures uniform flow of the cooling liquid throughout the muffler, avoiding local overheating and ensuring effective cooling of the entire muffler.

[0047] In this embodiment, the layered plate 81, the connecting plate 82, the first right partition plate 83, the first left partition plate 84, the second right partition plate 85, and the second left partition plate 86 are all made of channel steel structural plates, which increase the structural strength.

[0048] As a preferred solution, the water channel partition mechanism 8 further comprises a support plate 87, which is provided with a plurality of support plates 87, each of which is fixedly connected to the upper and lower outer side walls of the muffler inner shell 2, and the outer ends of the support plates 87 are fixedly connected to the inner side wall of the muffler outer shell 1. In this embodiment, the support plate 87 is provided with four, two on the upper and lower outer side walls of the muffler inner shell 2, and are spaced apart, and the notches of the four support plates 87 are all directed towards the muffler outer shell 1, and the outer ends of the four support plates 87 are fixedly connected to the inner side wall of the muffler outer shell 1. By providing the support plate 87, the connection strength between the inner and outer shells of the muffler is enhanced, and the rigidity and stability of the overall structure are improved.

[0049] As a preferred solution, the baffle assembly 4 comprises a first baffle 41, a second baffle 42 and a third baffle 43, which are all fixedly installed in the muffler inner shell 2, and are spaced apart from top to bottom. A first mounting cavity is formed between the inner top wall of the muffler inner shell 2 and the first baffle 41, a first sound expansion cavity 5 is formed between the first baffle 41 and the second baffle 42, a second mounting cavity is formed between the second baffle 42 and the third baffle 43, and a second sound expansion cavity 6 is formed between the third baffle 43 and the inner bottom wall of the muffler inner shell 2. By arranging the first baffle 41, the second baffle 42 and the third baffle 43, the muffler inner shell 2 is divided into multiple independent sound expansion cavities. By arranging the first sound expansion cavity 5 and the second sound expansion cavity 6, when the exhaust gas flow entering the muffler inner shell 2 through the first muffling pipe 71 passes through these cavities, the sound wave path is lengthened, and due to the reflection and absorption of the cavity inner wall, different frequencies of sound are effectively attenuated, thereby improving the noise reduction performance, and the sound waves change direction multiple times and interfere with each other, thereby further weakening the noise intensity. As the exhaust gas flows from the first sound expansion cavity 5 to the second sound expansion cavity 6, the exhaust gas flows from top to bottom, flows upward from the second sound expansion cavity 6 to the third muffling pipe 73, and finally is discharged out of the muffler outer shell 1. Heat is gradually transferred to the water cooling cavity 3 between the muffler inner shell 2 and the muffler outer shell 1. Although the first mounting cavity and the second mounting cavity are not mainly used to process sound, their existence helps to evenly distribute the heat load and avoid local overheating.

[0050] As a preferred solution, the sound attenuation assembly 7 comprises a first sound attenuation pipe 71, a second sound attenuation pipe 72 and a third sound attenuation pipe 73, the bottom of the sound damper is communicated with the first sound attenuation pipe 71, the air inlet end of the first sound attenuation pipe 71 penetrates through the sound damper outer shell 1, the air outlet end of the first sound attenuation pipe 71 is communicated with the first sound expansion chamber 5, the second sound attenuation pipe 72 and the third sound attenuation pipe 73 are both arranged on the baffle assembly 4, the air inlet end and the air outlet end of the second sound attenuation pipe 72 are respectively communicated with the first sound expansion chamber 5 and the second sound expansion chamber 6, the third sound attenuation pipe 73 is located between the first sound attenuation pipe 71 and the second sound attenuation pipe 72, the air inlet end of the third sound attenuation pipe 73 is communicated with the second sound expansion chamber 6, and the air outlet end of the third sound attenuation pipe 73 penetrates through the first sound expansion chamber 5, the sound damper inner shell 2 and the sound damper outer shell 1 in sequence and extends out of the sound damper outer shell 1. The sound damper inner shell 2 is divided into the first sound expansion chamber 5 and the second sound expansion chamber 6 by the baffle assembly 4, and the first sound attenuation pipe 71, the second sound attenuation pipe 72 and the third sound attenuation pipe 73 are used in cooperation, the length of the exhaust path is increased, the sound wave is reflected and interfered in multiple chambers for multiple times, different frequency sounds are effectively attenuated, the water cooling chamber 3 between the sound damper outer shell 1 and the inner shell is used for conveying cooling liquid, a water chamber fully wrapping the sound damper inner shell 2 is formed, the water cooling chamber 3 not only serves as a cooling medium but also acts as an additional sound insulation barrier, the overall noise reduction effect is enhanced, and the muting effect is better.

[0051] As a preferred solution, the first sound attenuation pipe 71 is fixedly installed on the bottom wall of the sound damper inner shell 2 and located at the right end of the sound damper inner shell 2, the air inlet end of the first sound attenuation pipe 71 penetrates through the sound damper outer shell 1 and extends downward out of the sound damper outer shell, and the air outlet end of the first sound attenuation pipe 71 penetrates through the third baffle 43 and the second baffle 42 in sequence and is communicated with the first sound expansion chamber 5;

[0052] The second sound attenuation pipe 72 is fixedly installed on the second baffle 42 and the third baffle 43 and located at the left end of the sound damper inner shell 2, the air inlet end and the air outlet end of the second sound attenuation pipe 72 are respectively communicated with the first sound expansion chamber 5 and the second sound expansion chamber 6;

[0053] The air inlet end of the third sound attenuation pipe 73 is fixedly installed on the third partition plate 43 and communicates with the second sound expansion chamber 6, and the air outlet end of the third sound attenuation pipe 73 penetrates through the second partition plate 42, the first partition plate 41, the first mounting chamber, the inner shell 2 of the muffler and the outer shell 1 of the muffler in sequence and extends out of the outer shell 1 of the muffler. The exhaust gas enters from the first sound attenuation pipe 71 at the bottom, vertically passes through the partition plates to the first sound expansion chamber 5, flows left in the first sound expansion chamber 5, and begins to experience the first noise reduction treatment, and the sound waves are reflected and absorbed in the expansion chamber, and the noise is preliminarily attenuated, and then the exhaust gas flows downward from the first sound expansion chamber 5 to the second sound expansion chamber 6 through the second sound attenuation pipe 72, flows right in the second sound expansion chamber 6, and flows upward through the third sound attenuation pipe 73 to flow out of the outer shell 1 of the muffler. The multi-stage and multi-direction flow path design greatly increases the residence time and path length of the exhaust gas in the muffler, thereby effectively reducing the exhaust noise.

[0054] In the embodiment, the third sound attenuation pipe 73 comprises an air inlet pipe portion, an "S"-shaped conveying pipe portion and an air outlet pipe portion which are sequentially communicated, the air inlet end of the air inlet pipe portion is fixedly installed on the third partition plate 43 and communicates with the second sound expansion chamber 6, the air inlet pipe portion is vertically arranged, the air outlet end of the air inlet pipe portion penetrates through the second partition plate 42 and the first partition plate 41 in sequence and communicates with the air inlet end of the "S"-shaped conveying pipe portion, the "S"-shaped conveying pipe portion is located in the first mounting chamber and is horizontally arranged along the front-rear direction, and the air outlet pipe portion is horizontally arranged and penetrates through the inner shell 2 of the muffler and the outer shell 1 of the muffler in sequence and extends out of the outer shell 1 of the muffler. Through the design of the "S"-shaped conveying pipe portion, the third sound attenuation pipe 73 greatly increases the flow path length of the gas in the muffler. This not only makes the sound waves propagate in the pipeline for a longer time, but also increases the opportunity of sound wave reflection and interference, thereby effectively reducing the noise.

[0055] In the embodiment, the water injection assembly 9 is further arranged, the water injection assembly 9 comprises a water injection pipe, a water overflow pipe and a cover body, the water injection pipe communicates with the top of the outer shell 1 of the muffler, the cover body is threadedly connected with the top of the water injection pipe, the water injection pipe is vertically arranged, the outer side wall of the water injection pipe is communicated with the water overflow pipe, and the water overflow pipe is communicated with a water tank through a pipeline. The water injection opening of the water injection pipe of the water injection assembly 9 is convenient for observing whether the water circuit is filled with coolant, and meanwhile, since the coolant at the muffler part is heated most quickly, the water overflow pipe is convenient for regulating the liquid level rising due to thermal expansion more quickly, so that the whole water circuit is balanced.

[0056] In the embodiment, the water channel separation mechanism 8 and the partition plate assembly 4 are both made of stainless steel.

[0057] The working mode of the utility model is as follows:

[0058] In use, the exhaust gas enters from the bottom first muffler pipe 71 and vertically upwards through the partition plate to the first sound expansion chamber 5, the exhaust gas flows leftwards in the first sound expansion chamber 5 and starts to experience the first noise reduction treatment, the sound waves are reflected and absorbed in the expansion chamber, the noise is preliminarily attenuated, then the exhaust gas flows downwards from the first sound expansion chamber 5 to the second sound expansion chamber 6 through the second muffler pipe 72 and flows rightwards in the second sound expansion chamber 6, and flows upwards through the third muffler pipe 73 to flow out of the muffler shell 1. The multi-stage and multi-direction flow path design greatly increases the residence time and path length of the exhaust gas in the muffler, thereby effectively reducing the exhaust noise. At the same time, the cooling liquid enters the water cooling cavity 3 through the liquid inlet pipe 11 at the bottom, flows leftwards in the water cooling cavity 3, and forms an "S" shape flow route on the front and rear outer side walls of the lower part of the muffler inner shell 2, and is collected to the upper layer of the water cooling cavity 3 on the left end of the muffler inner shell 2, i.e. the upper layer of the water cooling cavity 3, then the cooling liquid flows rightwards, and forms an "S" shape flow route on the front and rear outer side walls of the upper part of the muffler inner shell 2, and is collected to the liquid outlet pipe 12 and then flows out. The water cooling cavity 3 is divided into upper and lower two layers by the layered plate 81 and the connecting plate 82, and the cooling liquid is guided to form a complex "S" shape flow route by the first partition assembly 4 and the second partition assembly 4, thereby greatly increasing the flow path length of the cooling liquid in the muffler, so that the cooling liquid has more contact time with the high-temperature components, thereby improving the heat exchange efficiency.

[0059] In the embodiment, the cooling liquid circulates in the water cooling cavity 3 of the muffler, the heated cooling liquid flows out of the muffler, is cooled in the cooling system, and then circulates back to the muffler to continue to absorb heat, and so on, thereby realizing continuous cooling of the exhaust gas.

[0060] The utility model has been described in detail above. The description of the specific embodiments is only used to help understand the method of the utility model and its core idea. It should be noted that for ordinary skilled persons in the technical field, without departing from the principle of the utility model, the utility model can be improved and modified in many ways, and these improvements and modifications also fall within the protection scope of the utility model claims.

Claims

1. A water-cooled silencer for an ultra-quiet genset, characterized by: Comprising The muffler shell (1) is communicated with the liquid inlet pipe (11) at the bottom, and communicated with the liquid outlet pipe (12) on the rear side wall; The muffler inner shell (2) is located in the muffler shell (1), and a water cooling cavity (3) is formed between the muffler inner shell (2) and the muffler shell (1) for passing in cooling liquid; The water channel separation mechanism (8) is arranged in the water cooling cavity (3) for prolonging the water channel and connecting the muffler shell (1) and the muffler inner shell (2); The muffler inner shell (2) is provided with a baffle assembly (4), and the muffler inner shell (2) forms a first sound expansion cavity (5) and a second sound expansion cavity (6) through the baffle assembly (4), and the first sound expansion cavity (5) and the second sound expansion cavity (6) are spaced from top to bottom; The muffler assembly (7) is arranged on the baffle assembly (4) for muffling exhaust gas.

2. The water-cooled silencer of the ultra-silent genset according to claim 1, characterized in that: The water channel separation mechanism (8) comprises a layered plate (81), a connecting plate (82), a first separation assembly and a second separation assembly; The front and rear outer side walls of the muffler inner shell (2) are fixedly connected with the layered plates (81), and the two layered plates (81) are horizontally distributed and oppositely arranged, and the right ends of the two layered plates (81) are fixedly connected through the connecting plate (82); The first separation assembly is provided with two groups and is arranged below the layered plate (81), and the two groups of first separation assemblies are fixedly connected to the front and rear outer side walls of the muffler inner shell (2), respectively, the first separation assembly comprises a first right separation plate (83) and a first left separation plate (84) which are spaced from right to left, the lower end of the first right separation plate (83) is fixedly connected with the inner bottom wall of the muffler inner shell (2), and the upper end of the first right separation plate (83) is spaced from the layered plate (81), the upper end of the first left separation plate (84) is fixedly connected with the bottom of the layered plate (81), and the lower end of the first left separation plate (84) is spaced from the inner bottom wall of the muffler inner shell (2); The second separation assembly is provided with two groups and is arranged above the layered plate (81), and the two groups of second separation assemblies are fixedly connected to the front and rear outer side walls of the muffler inner shell (2), respectively, the second separation assembly comprises a second right separation plate (85) and a second left separation plate (86) which are spaced from right to left, the lower end of the second right separation plate (85) is fixedly connected with the top of the layered plate (81), and the upper end of the second right separation plate (85) is spaced from the inner top wall of the muffler inner shell (2), the upper end of the second left separation plate (86) is fixedly connected with the inner top wall of the muffler inner shell (2), and the lower end of the second left separation plate (86) is spaced from the top of the layered plate (81); The outer ends of the layered plate (81), the connecting plate (82), the first right separation plate (83), the first left separation plate (84), the second right separation plate (85) and the second left separation plate (86) are fixedly connected to the inner side wall of the muffler shell (1).

3. The water-cooled silencer of an ultra-silent genset according to claim 2, characterized in that: The water channel separating mechanism (8) further comprises support plates (87), a plurality of the support plates (87) are fixedly connected to the upper and lower outer side walls of the muffler inner shell (2) respectively, and outer ends of the support plates (87) are fixedly connected to the inner side wall of the muffler outer shell (1).

4. The water-cooled silencer of an ultra-silent genset according to claim 1, characterized in that: The partition plate assembly (4) comprises a first partition plate (41), a second partition plate (42) and a third partition plate (43) which are all fixedly installed on the muffler inner shell (2), the first partition plate (41), the second partition plate (42) and the third partition plate (43) are sequentially and spacedly arranged from top to bottom, a first installation cavity is formed between the inner top wall of the muffler inner shell (2) and the first partition plate (41), a first sound expansion cavity (5) is formed between the first partition plate (41) and the second partition plate (42), a second installation cavity is formed between the second partition plate (42) and the third partition plate (43), and a second sound expansion cavity (6) is formed between the third partition plate (43) and the inner bottom wall of the muffler inner shell (2).

5. The water-cooled silencer of a super-silent genset according to claim 4, characterized in that: The sound damping assembly (7) comprises a first sound damping pipe (71), a second sound damping pipe (72) and a third sound damping pipe (73), the bottom of the muffler is communicated with the first sound damping pipe (71), the air inlet end of the first sound damping pipe (71) penetrates the muffler outer shell (1), the air outlet end of the first sound damping pipe (71) is communicated with the first sound expansion cavity (5), the second sound damping pipe (72) and the third sound damping pipe (73) are both arranged on the partition plate assembly (4), the air inlet end and the air outlet end of the second sound damping pipe (72) are respectively communicated with the first sound expansion cavity (5) and the second sound expansion cavity (6), the third sound damping pipe (73) is located between the first sound damping pipe (71) and the second sound damping pipe (72), the air inlet end of the third sound damping pipe (73) is communicated with the second sound expansion cavity (6), and the air outlet end of the third sound damping pipe (73) penetrates the first sound expansion cavity (5), the muffler inner shell (2) and the muffler outer shell (1) in sequence and extends out of the muffler outer shell (1).

6. The water-cooled silencer of an ultra-silent genset according to claim 5, characterized in that: The first sound damping pipe (71) is fixedly installed on the bottom wall of the muffler inner shell (2) and located at the right end of the muffler inner shell (2), the air inlet end of the first sound damping pipe (71) penetrates the muffler outer shell (1) and extends downward out of the muffler outer shell, and the air outlet end of the first sound damping pipe (71) penetrates the third partition plate (43) and the second partition plate (42) in sequence and is communicated with the first sound expansion cavity (5); The second sound damping pipe (72) is fixedly installed on the second partition plate (42) and the third partition plate (43) and located at the left end of the muffler inner shell (2), the air inlet end and the air outlet end of the second sound damping pipe (72) are respectively communicated with the first sound expansion cavity (5) and the second sound expansion cavity (6); The air inlet end of the third sound damping pipe (73) is fixedly installed on the third partition plate (43) and communicated with the second sound expansion cavity (6), and the air outlet end of the third sound damping pipe (73) penetrates the second partition plate (42), the first partition plate (41), the first installation cavity, the muffler inner shell (2) and the muffler outer shell (1) in sequence and extends out of the muffler outer shell (1).

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