Silencing elbow for exhaust of generator set

Abstract

The utility model relates to the technical field of silencing elbows, and discloses a silencing elbow for exhaust of a generator set, which comprises a half elbow pipe, a sealing rubber strip is fixedly connected to the output end of one side of the half elbow pipe, and the output end of one side, far away from the half elbow pipe, of the sealing rubber strip is in frictional contact with a second half elbow pipe; a threaded ring is arranged at the output end of one end of the bottom of the second half-elbow pipe, a second threaded ring is arranged at the output end of one end of the half-elbow pipe, and the threaded ring and the output end of the second threaded ring are in threaded connection with a fixing nut. A third threaded ring is arranged on the outer wall of one end of the top of the second half-elbow pipe, and a fourth threaded ring is arranged on the outer wall of one end of the top of the half-elbow pipe. According to the device, the sealing rubber strip makes close contact with the second half elbow pipe, the threaded ring, the second threaded ring and the fixing nut are firmly matched, the device achieves extremely high sealing performance, meanwhile, the multiple layers of gas blocking pieces are arranged in the device, gas is divided, reflected and collided, and therefore the noise reduction effect is more remarkable, and the device is more practical.

Description

Technical Field

[0001] The utility model relates to the technical field of silencer elbows, in particular to a silencer elbow for exhaust of a generator set. Background Art

[0002] Generator sets, as core equipment for power supply, are widely used in various industrial, commercial, and residential sectors. However, during generator set operation, the noise generated by their exhaust systems often becomes a significant source of environmental pollution and public nuisance. To effectively control and reduce this noise, generator set exhaust silencing elbows have emerged. Silencer elbows are noise reduction devices specifically designed for use in generator set exhaust systems. They not only guide airflow for smooth exhaust, but more importantly, significantly reduce the noise generated during the exhaust process, thereby protecting the surrounding environment and human health. With growing environmental awareness and increasingly stringent noise pollution regulations, the demand for generator set exhaust silencing elbows is becoming increasingly urgent, making them an indispensable component of generator set equipment. While various generator set exhaust silencing elbow designs are available on the market, conventional technologies still exhibit numerous shortcomings in practical application. For one thing, conventional silencing elbows often employ relatively simple or simplistic noise reduction structures, such as relying solely on sound-absorbing materials or simple flow-guiding designs. This results in limited noise reduction effectiveness when dealing with complex noise spectrums, particularly low-frequency noise. On the other hand, the durability and stability of traditional silencer elbows are also major problems. In harsh working environments such as high temperature, high pressure, and corrosive gases, the sound-absorbing material is prone to aging, deformation, and even falling off, resulting in a significant decrease in noise reduction performance. In addition, the complex structural design and high manufacturing costs are also important factors that make it difficult to widely promote traditional silencer elbows. These problems not only affect the overall performance of the generator set exhaust system, but may also have long-term adverse effects on the surrounding environment and personnel health. Therefore, a more efficient, stable, and economical silencer elbow for generator set exhaust is urgently needed to replace traditional technology.

[0003] For example, Chinese patent CN203797910U discloses a silencer elbow, which achieves a certain degree of noise attenuation through a combination of a cylindrical shell, a glass wool sound-absorbing layer, a perforated galvanized sheet, an inlet flange, and an outlet flange. Among them, the glass wool sound-absorbing layer serves as the core noise reduction component, reducing noise by absorbing and reflecting sound waves. However, when the above patent is in use, its noise reduction effect is limited by the material and structure of the glass wool sound-absorbing layer. The attenuation effect for high-frequency noise is particularly obvious, but it is powerless in dealing with low-frequency noise. In addition, the design structure of this patent is relatively complex, the manufacturing cost is high, and during long-term use, the glass wool sound-absorbing layer may cause the noise reduction performance to decline due to factors such as moisture and aging. For this reason, we propose a silencer elbow for generator exhaust. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the deficiencies in the prior art, the utility model provides a silencer elbow for exhaust of a generator set, which solves the above-mentioned problems.

[0006] (2) Technical solution

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a silencer elbow for exhaust of a generator set, comprising a half elbow pipe, wherein the output end of one side of the half elbow pipe is fixedly connected to a sealing strip, and the sealing strip is in frictional contact with a second half elbow pipe away from the output end of one side of the half elbow pipe, a threaded ring is provided at the output end of one end of the bottom of the second half elbow pipe, a second threaded ring is provided at the output end of one end of the half elbow pipe, and a fixing nut is threadedly connected to the output end of the second half elbow ring, a third threaded ring is provided on the outer wall of one end of the top of the second half elbow pipe, a fourth threaded ring is provided on the outer wall of one end of the top of the half elbow pipe, a fixing cap is sleeved on the output end of the half elbow pipe and the top of the second half elbow pipe, a fifth threaded ring is provided on one end of the inner wall of the fixing cap, and the output ends of the third and fourth threaded rings are threadedly connected to the output end of one end of the fifth threaded ring.

[0008] Preferably, a plurality of gas baffles are inserted into the bottom of the inner wall of the semi-elbow tube, a ventilation hole is opened on the outer wall of one side of the gas baffle, and the ventilation hole passes through the outer wall of one side of the gas baffle, and the gas baffles are provided in three groups, and the gas baffles are parallel.

[0009] Preferably, a plurality of second gas baffles are inserted on one side of the inner wall of the semi-elbow tube, a second ventilation circular hole is opened at the bottom, and the second ventilation circular hole passes through the top of the second gas baffle, the second gas baffles are provided in four groups, and the plurality of second gas baffles are parallel up and down, the second gas baffle is located above the gas baffle, and the gas baffle is perpendicular to the output direction of the second ventilation circular hole.

[0010] Preferably, a baffle is inserted into the inner wall of one end of the top of the semi-elbow pipe, and the baffle is located above the second gas baffle. The top output end of the baffle is fixedly connected to the ventilation pipe, and the bottom output end of the ventilation pipe passes through the bottom of the baffle.

[0011] Preferably, a plurality of evenly distributed ventilation holes are opened on the outer wall of one end of the ventilation pipe, the top output end of the ventilation pipe is fixedly connected to the second baffle, and the top output end of the ventilation pipe passes through the top of the second baffle, and the outer wall of one end of the second baffle is inserted into the inner wall of one end of the semi-elbow pipe.

[0012] Preferably, the half elbow pipe and the top output end of the second half elbow pipe are fixedly connected with a plurality of guide teeth, the outer sides of the guide teeth are arranged in an arc shape, and the plurality of guide teeth are evenly arranged in a circle.

[0013] Preferably, the gas baffle, the second gas baffle, and the vent hole are made of stainless steel.

[0014] (3) Beneficial effects

[0015] Compared with the existing technology, the utility model provides a silencer elbow for generator set exhaust, which has the following beneficial effects:

[0016] 1. This generator set exhaust muffler elbow, referring to the comparative document CN203797910U, discloses a technology that uses a glass wool sound-absorbing layer as the primary noise reduction method. However, this technology has limited attenuation of low-frequency noise. This application document utilizes a carefully designed multi-layer gas baffle, air vents, and guide teeth, effectively attenuating high-frequency noise while also excelling in suppressing low-frequency noise. The multi-layered baffle structure causes the gas to be diverted, reflected, and collided multiple times within the elbow, significantly reducing the transmission efficiency of low-frequency noise.

[0017] 2. The generator set exhaust muffler elbow achieves exceptional sealing performance through close frictional contact between the sealing strip and the second half of the elbow pipe, as well as the secure fit between the threaded ring, the second threaded ring, and the retaining nut, effectively preventing gas leakage. This design not only ensures the integrity of the exhaust system but also provides a stable foundation for subsequent muffler treatment, ensuring a sustained and stable noise reduction effect.

[0018] 3. The combined design of the generator set's exhaust muffler elbow, baffle plate 15, and vent pipe 16, along with the vent holes 17 on the vent pipe, optimizes and refines airflow. The baffle plate effectively blocks direct airflow, while the vent pipe provides a narrow channel, squeezing and diverting the air as it passes through. The vent holes 17 further refine the airflow, allowing it to exit the elbow in a smoother and more orderly manner, effectively reducing eddies and turbulence, thereby lowering noise levels. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the side structure explosion of the utility model;

[0020] Figure 2 This is a schematic diagram of the decomposition of the utility model;

[0021] Figure 3 This is a schematic structural diagram of the utility model.

[0022] In the figure: 1. Half elbow pipe; 2. Sealing strip; 3. Second half elbow pipe; 4. Threaded ring; 5. Second threaded ring; 6. Fixing nut; 7. Third threaded ring; 8. Fourth threaded ring; 9. Fixing cap; 10. Fifth threaded ring; 11. Gas baffle; 12. Ventilation hole; 13. Second gas baffle; 14. Second vent hole; 15. Baffle plate; 16. Ventilation pipe; 17. Ventilation hole; 18. Second baffle plate; 19. Guide tooth. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-3 A silencer elbow for exhaust of a generator set comprises a half elbow pipe 1, an output end of one side of the half elbow pipe 1 is fixedly connected with a sealing strip 2, and the sealing strip 2 is in friction contact with a second half elbow pipe 3 away from the output end of the half elbow pipe 1. A threaded ring 4 is provided at the output end of one end of the bottom of the second half elbow pipe 3, a second threaded ring 5 is provided at the output end of one end of the half elbow pipe 1, and the threaded ring 4 and the output end of the second threaded ring 5 are threadedly connected with a fixing nut 6, a third threaded ring 7 is provided on the outer wall of one end of the top of the second half elbow pipe 3, a fourth threaded ring 8 is provided on the outer wall of one end of the top of the half elbow pipe 1, a fixing cap 9 is sleeved on the output end of the half elbow pipe 1 and the top of the second half elbow pipe 3, a fifth threaded ring 10 is provided on one end of the inner wall of the fixing cap 9, and the output ends of the third threaded ring 7 and the fourth threaded ring 8 are threadedly connected to the output end of one end of the fifth threaded ring 10.

[0025] Furthermore, a plurality of gas baffles 11 are inserted into the bottom of the inner wall of the semi-elbow tube 1, and a ventilation hole 12 is opened on the outer wall of one side of the gas baffle 11, and the ventilation hole 12 passes through the outer wall of one side of the gas baffle 11. There are three groups of gas baffles 11, and several gas baffles 11 are parallel.

[0026] Furthermore, a number of second gas baffles 13 are inserted on one side of the inner wall of the semi-elbow tube 1, a second ventilation circular hole 14 is opened at the bottom, and the second ventilation circular hole 14 passes through the top of the second gas baffle 13, the second gas baffle 13 is provided with four groups, and the second gas baffles 13 are parallel up and down, the second gas baffle 13 is located above the gas baffle 11, and the gas baffle 11 is perpendicular to the output direction of the second ventilation circular hole 14.

[0027] Furthermore, a baffle 15 is inserted into the inner wall of one end of the top of the semi-elbow pipe 1. The baffle 15 is located above the second gas baffle 13. The top output end of the baffle 15 is fixedly connected to the ventilation pipe 16, and the bottom output end of the ventilation pipe 16 passes through the bottom of the baffle 15.

[0028] Furthermore, a number of evenly distributed ventilation holes 17 are opened on the outer wall of one end of the ventilation pipe 16, and the top output end of the ventilation pipe 16 is fixedly connected to the second baffle 18, and the top output end of the ventilation pipe 16 passes through the top of the second baffle 18, and the outer wall of one end of the second baffle 18 is inserted into the inner wall of one end of the semi-elbow pipe 1.

[0029] Furthermore, a plurality of guide teeth 19 are fixedly connected to the top output ends of the half elbow pipe 1 and the second half elbow pipe 3. The outer sides of the guide teeth 19 are arranged in an arc shape, and the plurality of guide teeth 19 are evenly arranged in a circle.

[0030] Furthermore, the gas baffle 11 , the second gas baffle 13 , and the vent hole 17 are made of stainless steel.

[0031] Structural description: 1. Half elbow pipe 1: As the main structural part of the silencer elbow, it guides and changes the direction of the airflow, while carrying other components. It is the foundation of the entire device and is located at the outermost layer of the device.

[0032] 2. Sealing strip 2: ensures the sealing between the half elbow pipe 1 and the second half elbow pipe 3 to prevent gas leakage. It fits tightly on one side of the output end of the half elbow pipe 1 and is in friction contact with the second half elbow pipe 3.

[0033] 3. Second half elbow pipe 3: cooperates with the half elbow pipe 1 to form a complete elbow structure, which also plays the role of guiding and changing the direction of airflow. It is connected to the half elbow pipe 1 through the sealing strip 2 and is located on one side of the half elbow pipe 1.

[0034] 4. Threaded ring 4 and second threaded ring 5: These are located at the output ends of the second elbow half 3 and half elbow 1, respectively, and are used to mate with fixing nut 6 to achieve a tight connection between the two. Positionally, threaded ring 4 is located at the bottom of the second elbow half 3, and second threaded ring 5 is located at a corresponding position on half elbow 1.

[0035] 5. Fixing nut 6: The threaded ring 4 and the second threaded ring 5 are connected by threads to tightly fix the half elbow pipe 1 and the second half elbow pipe 3 together. It is located outside the threaded ring 4 and the second threaded ring 5 and is tightened by rotation.

[0036] 6. The third thread ring 7 and the fourth thread ring 8 are respectively opened on the top outer wall of the second half elbow tube 3 and the half elbow tube 1, and are used to cooperate with the fifth thread ring 10 in the fixing cap 9 to achieve sealing and fixation of the top, and are respectively located on the top of the second half elbow tube 3 and the half elbow tube 1.

[0037] 7. Fixing cap 9: The fifth thread ring 10 inside cooperates with the third thread ring 7 and the fourth thread ring 8 to tightly fix and seal the top of the half elbow pipe 1 and the second half elbow pipe 3, and is sleeved on the top of the half elbow pipe 1 and the second half elbow pipe 3.

[0038] 8. Gas baffle 11: inserted into the bottom of the inner wall of the half elbow tube 1, the ventilation circular hole 12 is opened to force the gas to be diverted when passing through, forming multiple reflections and collisions to reduce noise. It is located on the bottom inner wall of the half elbow tube 1, and there are three groups of them, arranged in parallel.

[0039] 9. Second gas baffle 13: inserted on one side of the inner wall of the half elbow pipe 1, located above the gas baffle 11, and further forces the gas to change its flow direction through the second ventilation circular hole 14, increasing the number of collisions and reducing noise. It is perpendicular to the gas baffle 11 and is provided with four groups, arranged parallel to each other.

[0040] 10. Baffle 15: Located above the second gas baffle 13, it effectively blocks the direct rise of gas, provides support for the vent pipe 16, and is inserted into the top inner wall of the half elbow pipe 1.

[0041] 11. Vent pipe 16: provides a narrow channel for gas discharge. The vent holes 17 on it further refine the airflow, allowing the gas to be discharged more smoothly. It is fixedly connected to the top output end of the baffle 15 and the bottom passes through the baffle 15.

[0042] 12. Vent 17: It is provided on the outer wall of the vent pipe 16 so that the gas is further squeezed and diverted when passing through, thereby reducing noise and being evenly distributed on the outer wall of the vent pipe 16.

[0043] 13. Second baffle 18: Located at the top of the vent pipe 16, it is inserted into the inner wall of one end of the half elbow pipe 1 to further fix and seal the vent pipe 16. It is located at the top output end of the vent pipe 16.

[0044] 14. Guide teeth 19: Arranged in an arc shape, they guide the gas out of the elbow in a more orderly manner, reduce the generation of eddies and turbulence, and reduce noise. They are fixedly connected to the top output ends of the half elbow pipe 1 and the second half elbow pipe 3 and are evenly arranged in a circular shape.

[0045] Working Principle: First, the frictional contact between the sealing strip 2 and the second half-elbow tube 3, as well as the tight fit between the threaded ring 4, the second threaded ring 5, and the fixing nut 6, ensure the sealing and stability of the entire elbow structure. This design not only prevents gas leakage but also provides a solid foundation for subsequent noise reduction. Next, after entering the half-elbow tube 1, the gas is first blocked by gas baffles 11. The vent holes 12 on these baffles force the gas to divert as it passes through, resulting in multiple reflections and collisions, effectively reducing the gas's flow rate and kinetic energy, initially achieving a noise reduction effect. The gas then continues upward and encounters further obstruction from the second gas baffle 13. The second vent holes 14 on these baffles are perpendicular to the vent holes of the gas baffle 11, further forcing the gas to change its flow direction, increasing its residence time and the number of collisions within the elbow, thereby further reducing noise. The combined design of the baffle 15 and vent pipe 16 plays a key role in the gas flow path. The baffle, located above the second gas baffle, effectively blocks the direct upward movement of the gas, while the vent tube provides a relatively narrow passage, further squeezing and diverting the gas as it passes through. The vent holes 17 on the vent tube further refine the airflow, allowing it to exit more smoothly. Furthermore, the design of the guide teeth 19 is also an important component of the noise reduction effect. These arc-shaped guide teeth guide the gas out of the elbow in a more orderly manner, reducing the generation of vortices and turbulence, thereby reducing noise.

[0046] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A muffler elbow for exhaust of a generator set, comprising a half elbow pipe (1), characterized in that: The output end of one side of the half elbow tube (1) is fixedly connected with a sealing strip (2), and the sealing strip (2) is in frictional contact with a second half elbow tube (3) away from the output end of one side of the half elbow tube (1). A threaded ring (4) is provided at the output end of one end of the bottom of the second half elbow tube (3), a second threaded ring (5) is provided at the output end of one end of the half elbow tube (1), and the threaded ring (4) and the output end of the second threaded ring (5) are threadedly connected with a fixing nut (6), a third threaded ring (7) is provided on the outer wall of one end of the top of the second half elbow tube (3), a fourth threaded ring (8) is provided on the outer wall of one end of the top of the half elbow tube (1), and a fixing cap (9) is sleeved on the output ends of the half elbow tube (1) and the second half elbow tube (3), a fifth threaded ring (10) is provided on one end of the inner wall of the fixing cap (9), and the output ends of the third threaded ring (7) and the fourth threaded ring (8) are threadedly connected to the output end of one end of the fifth threaded ring (10).

2. The generator exhaust muffler elbow according to claim 1, characterized in that: A plurality of gas baffles (11) are inserted into the bottom of the inner wall of the semi-elbow tube (1); a vent hole (12) is provided on the outer wall of one side of the gas baffle (11); and the vent hole (12) passes through the outer wall of one side of the gas baffle (11); three groups of gas baffles (11) are provided, and the plurality of gas baffles (11) are parallel.

3. The generator exhaust muffler elbow according to claim 1, characterized in that: A plurality of second gas baffles (13) are inserted into one side of the inner wall of the semi-elbow tube (1); a second vent hole (14) is opened at the bottom, and the second vent hole (14) passes through the top of the second gas baffle (13); four groups of the second gas baffles (13) are provided, and the plurality of second gas baffles (13) are parallel to each other in the upper and lower directions; the second gas baffle (13) is located above the gas baffle (11), and the gas baffle (11) is perpendicular to the output direction of the second vent hole (14).

4. The generator exhaust muffler elbow according to claim 3, characterized in that: A baffle (15) is inserted into the inner wall of one end of the top of the semi-elbow pipe (1), and the baffle (15) is located above the second gas baffle (13). The top output end of the baffle (15) is fixedly connected to a vent pipe (16), and the bottom output end of the vent pipe (16) passes through the bottom of the baffle (15).

5. The generator exhaust muffler elbow according to claim 4, characterized in that: A plurality of evenly distributed vent holes (17) are provided on the outer wall of one end of the vent pipe (16); the top output end of the vent pipe (16) is fixedly connected to a second baffle (18), and the top output end of the vent pipe (16) passes through the top of the second baffle (18); the outer wall of one end of the second baffle (18) is plugged into the inner wall of one end of the semi-elbow pipe (1).

6. The generator exhaust muffler elbow according to claim 1, characterized in that: The half elbow pipe (1) and the top output end of the second half elbow pipe (3) are fixedly connected with a plurality of guide teeth (19), the outer sides of the guide teeth (19) are arranged in an arc shape, and the plurality of guide teeth (19) are evenly arranged in a circular shape.

7. The generator exhaust muffler elbow according to claim 5, characterized in that: The gas baffle (11), the second gas baffle (13), and the vent hole (17) are made of stainless steel.

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