High-reliability exhaust pipe sealing ring

Abstract

The utility model relates to the technical field of exhaust pipe sealing, and particularly discloses a high-reliability exhaust pipe sealing ring which comprises a first exhaust pipe, a second exhaust pipe is placed below the first exhaust pipe, and two sealing cylinders and a sealing assembly are placed between the first exhaust pipe and the second exhaust pipe. The sealing assembly is installed on the faces, away from each other, of the two sealing cylinders and used for reliably sealing the first exhaust pipe and the second exhaust pipe, and the auxiliary assembly is installed on the faces, close to each other, of the two sealing cylinders and used for ensuring that the whole device is installed more firmly. An auxiliary assembly can enable a worker to check whether installation is firm or not by judging the distance between the two sealing cylinders, and through a series of cooperation of the sealing assembly and the auxiliary assembly, the first exhaust pipe and the second exhaust pipe can be inserted into an empty groove, so that the sealing effect is better; and the sealing performance is better when the two sealing cylinders are overlapped.

Description

Technical Field

[0001] This utility model relates to the field of exhaust pipe sealing technology, specifically a high-reliability exhaust pipe sealing ring. Background Technology

[0002] In the exhaust system of an internal combustion engine, the exhaust pipe, as a core component, plays a crucial role in collecting exhaust gases from each cylinder and transporting them to the aftertreatment device. The sealing ring, as an important sealing element in pipe connections, is typically a notched ring structure installed within a sleeve annular groove. It achieves a seal by relying on the elastic deformation of the notch after being pressed together to press against the inner wall of a stationary component. It is a core component in flange connection structures that prevents exhaust gas leakage.

[0003] Existing exhaust systems typically use flanges to connect pipes and exhaust tubes, and the standard metal sealing rings used are generally simple, notched, plate-like structures. In actual operating conditions, due to the long-term exposure to high temperatures, high pressures, and vibration loads, these sealing rings are prone to plastic deformation. When the sealing ring deforms, its fit with the sealing surface decreases, leading to seal failure and subsequent exhaust gas leakage. This not only reduces exhaust system efficiency but can also cause environmental pollution, decreased power performance, and other adverse consequences, threatening engine reliability and durability.

[0004] To address the issues of traditional sealing rings being prone to deformation and having insufficient sealing reliability under complex operating conditions, there is an urgent need to design a sealing ring with an improved structure to enhance its resistance to deformation and sealing performance, thereby meeting the high reliability requirements of exhaust systems. Utility Model Content

[0005] To overcome the technical defects of existing technologies, this utility model provides a highly reliable exhaust pipe sealing ring.

[0006] The technical solution adopted by this utility model is: a high-reliability exhaust pipe sealing ring, including a first exhaust pipe, a second exhaust pipe placed below the first exhaust pipe, two sealing cylinders placed between the first and second exhaust pipes, a sealing assembly, the sealing assembly being installed on the side of the two sealing cylinders that are far apart from each other, the sealing assembly being used to reliably seal the first exhaust pipe and the second exhaust pipe respectively, and an auxiliary assembly, the auxiliary assembly being installed on the side of the two sealing cylinders that are close to each other, the auxiliary assembly being used to ensure that the overall installation of the device is more secure, and the auxiliary assembly allowing the operator to check whether the installation is secure by judging the distance between the two sealing cylinders.

[0007] Preferably, the sealing assembly includes two slots, each located on a side of the two sealing cylinders that are far apart from each other. Several evenly distributed sealing rings are fixedly installed on the inner wall of each slot. A first elastic plate is fixedly connected to the side of each of the two sealing cylinders that are far apart from each other. Rubber rings are fitted onto the outer surfaces of both the first and second exhaust pipes. This ensures that the first and second exhaust pipes are more secure and have a better seal after installation.

[0008] Preferably, the outer surfaces of the second exhaust pipe and the sealing cylinder are both fixedly connected with mounting flanges, which are used to install the entire device using screws.

[0009] Preferably, when the first exhaust pipe and the second exhaust pipe are respectively inserted into the empty groove, the rubber ring will contact the sealing cylinder that is close to it, so as to avoid the length of the two ends of the first exhaust pipe and the second exhaust pipe from the installation flange being too long, resulting in the whole device not having reliable sealing.

[0010] Preferably, the auxiliary component includes two annular grooves, which are respectively opened between the adjacent sides of the sealing cylinders. Annular sliders are engaged inside each of the two annular grooves. The same annular cylinder is fixedly connected between the adjacent sides of the two annular sliders. A second elastic plate is fixedly connected between each annular slider and the inner wall of the annular groove. The overall installation of the device can be determined based on the distance between the two sealing cylinders.

[0011] Preferably, a sealing ring is fixedly installed on the side of each of the two sealing cylinders that are close to each other, which can prevent air leakage from the gap between the two sealing cylinders after installation.

[0012] Preferably, each of the annular grooves has a smooth inner wall, and each of the annular sliders has a smooth outer surface, which can ensure that the annular sliders slide more smoothly inside the annular grooves and avoid the annular sliders getting stuck.

[0013] The beneficial effects of this utility model are:

[0014] 1. When the first and second exhaust pipes are inserted into the empty slot, the sealing ring, through its own deformation, seals the gap between the first and second exhaust pipes and the sealing cylinder, preventing air leakage. With the cooperation of the first elastic plate and the rubber ring, when the two mounting flanges are connected with screws, the two flanges compress the first elastic plate, causing it to deform. This deformation of the first elastic plate further compresses the rubber ring, allowing the first and second exhaust pipes to be inserted into the empty slot for a better sealing effect.

[0015] 2. Through the interlocking of the annular groove and the annular slider, the annular slider can slide freely inside the annular groove. At this time, through the elastic effect of the second elastic plate, the two sealing cylinders can be supported by a certain distance. After the two sealing cylinders are closed, the two annular sliders will automatically enter the interior of the annular groove, and then the annular cylinders will also enter the interior of the annular groove, causing the two sealing cylinders to overlap. Through the setting of the sealing ring, the sealing performance is better when the two sealing cylinders overlap. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a frontal cross-sectional view of the present invention.

[0018] Figure 3 This utility model Figure 2 An enlarged schematic diagram of the structure at point A.

[0019] Figure 4 This utility model Figure 2 Enlarged schematic diagram of the structure at point B.

[0020] Explanation of reference numerals in the attached figures: 1. Sealing assembly; 2. Auxiliary assembly; 3. First exhaust pipe; 4. Second exhaust pipe; 5. Sealing cylinder; 6. Mounting flange; 7. Groove; 8. Sealing ring; 9. First elastic plate; 10. Rubber ring; 11. Annular groove; 12. Annular slider; 13. Annular cylinder; 14. Second elastic plate; 15. Closing ring. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings:

[0022] like Figure 1-4 As shown, this embodiment provides a high-reliability exhaust pipe sealing ring including a first exhaust pipe 3, a second exhaust pipe 4 placed below the first exhaust pipe 3, two sealing cylinders 5 placed between the first exhaust pipe 3 and the second exhaust pipe 4, a sealing component 1 installed on the side of the two sealing cylinders 5 that are far apart from each other, the sealing component 1 is used to reliably seal the first exhaust pipe 3 and the second exhaust pipe 4 respectively, and an auxiliary component 2 installed on the side of the two sealing cylinders 5 that are close to each other, the auxiliary component 2 is used to ensure that the overall installation of the device is more secure, and the auxiliary component 2 allows the operator to check whether the installation is secure by judging the distance between the two sealing cylinders 5.

[0023] The sealing assembly 1 includes two slots 7, which are respectively opened on the opposite sides of the two sealing cylinders 5. Several evenly distributed sealing rings 8 are fixedly installed on the inner wall of each slot 7. A first elastic plate 9 is fixedly connected to the opposite sides of the two sealing cylinders 5. Rubber rings 10 are fitted onto the outer surfaces of the first exhaust pipe 3 and the second exhaust pipe 4. This ensures that the first exhaust pipe 3 and the second exhaust pipe 4 are more secure and have better sealing performance after installation.

[0024] The outer surfaces of the second exhaust pipe 4 and the sealing cylinder 5 are both fixedly connected to mounting flanges 6, which are used to install the entire device using screws.

[0025] When the first exhaust pipe 3 and the second exhaust pipe 4 are inserted into the empty groove 7, the rubber ring 10 will come into contact with the sealing cylinder 5 that is close to it, so as to avoid the length of the first exhaust pipe 3 and the second exhaust pipe 4 from the mounting flange 6 being too long, which would result in the whole device not having reliable sealing.

[0026] The auxiliary component 2 includes two annular grooves 11, which are respectively opened between the adjacent sides of the sealing cylinders 5. Annular sliders 12 are engaged inside the two annular grooves 11. The same annular cylinder 13 is fixedly connected between the adjacent sides of the two annular sliders 12. A second elastic plate 14 is fixedly connected between each annular slider 12 and the inner wall of the annular groove 11. The overall installation of the device can be judged based on the distance between the two sealing cylinders 5.

[0027] A sealing ring 15 is fixedly installed on the side of each of the two sealing cylinders 5 that are close to each other, which can prevent air leakage from the gap between the two sealing cylinders 5 after installation.

[0028] Each annular groove 11 has a smooth inner wall, and each annular slider 12 has a smooth outer surface, which can ensure that the annular slider 12 slides more smoothly inside the annular groove 11 and avoid the annular slider 12 getting stuck.

[0029] Working principle:

[0030] When the entire device needs to be installed, firstly, insert both ends of the first exhaust pipe 3 and the second exhaust pipe 4 into the empty groove 7. At this point, make the mounting flange 6 contact the sealing cylinder 5 through the rubber ring 10. By using fastening screws, install the two mounting flanges 6, causing them to move closer to the sealing cylinder 5. This causes the mounting flanges 6 to compress the first elastic plate 9, resulting in deformation. This deformation of the first elastic plate 9 then compresses the rubber ring 10, filling the gap between the mounting flange 6 and the sealing cylinder 5. When the first exhaust pipe 3 and the second exhaust pipe 4 are inserted into the empty groove 7, the deformation of the sealing ring 8 further fills the gap between the second exhaust pipe 4 and the sealing cylinder 5. This design effectively improves the sealing performance when the first exhaust pipe 3 and the second exhaust pipe 4 are connected. When the two mounting flanges 6 are fixed with fastening screws, the annular cylinder 13 will stably enter the interior of the annular groove 11 under the guidance of the annular slider 12 and the annular groove 11. As the two mounting flanges 6 continue to approach each other, the two sealing cylinders 5 will move closer together. At this time, through the set sealing ring 15, the two sets of sealing rings 15 will contact each other. After the mounting flanges 6 are fixed, the gap between the two sealing cylinders 5 on the side that is close to each other will be filled by the sealing ring 15, which can further prevent air leakage between the two sealing cylinders 5. Through the set second elastic plate 14, the two sealing cylinders 5 can be automatically reset after the entire device is removed.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from the spirit and scope of the invention. All such changes and modifications fall within the scope of the invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. A high-reliability exhaust pipe sealing ring, comprising a first exhaust pipe (3), a second exhaust pipe (4) placed below the first exhaust pipe (3), and two sealing cylinders (5) placed between the first exhaust pipe (3) and the second exhaust pipe (4); a sealing assembly (1) installed on a side of the two sealing cylinders (5) away from each other, the sealing assembly (1) being used for reliable sealing of the first exhaust pipe (3) and the second exhaust pipe (4) respectively; an auxiliary assembly (2) installed on a side of the two sealing cylinders (5) close to each other, the auxiliary assembly (2) being used for ensuring that the overall installation of the device is more firm, and the auxiliary assembly (2) allowing a worker to check whether the installation is firm by judging the spacing between the two sealing cylinders (5).

2. A high reliability exhaust pipe seal ring according to claim 1, characterized in that: The sealing assembly (1) comprises two empty grooves (7) respectively formed on a side of the two sealing cylinders (5) away from each other, a plurality of sealing rings (8) uniformly distributed are fixedly installed on the inner wall of each empty groove (7), a first elastic plate (9) is fixedly connected to a side of each sealing cylinder (5) away from each other, and a rubber ring (10) is sleeved on the outer surface of the first exhaust pipe (3) and the second exhaust pipe (4).

3. A high reliability exhaust pipe seal ring according to claim 2, wherein: The outer surface of the second exhaust pipe (4) and the sealing cylinder (5) is fixedly connected with a mounting flange (6).

4. A high reliability exhaust pipe seal ring according to claim 2, wherein: When the first exhaust pipe (3) and the second exhaust pipe (4) are inserted into the empty grooves (7) respectively, the rubber ring (10) is in contact with the sealing cylinder (5) close to the rubber ring (10).

5. A high reliability exhaust pipe seal ring according to claim 1, wherein: The auxiliary assembly (2) comprises two annular sliding grooves (11) respectively formed on a side between the two sealing cylinders (5) close to each other, an annular sliding block (12) is clamped in each annular sliding groove (11), the same annular cylinder (13) is fixedly connected between a side of the two annular sliding blocks (12) close to each other, and a second elastic plate (14) is fixedly connected between each annular sliding block (12) and the inner wall of the annular sliding groove (11).

6. A high reliability exhaust pipe seal ring according to claim 5, wherein: A closed ring (15) is fixedly installed on a side of each sealing cylinder (5) close to each other.

7. A high reliability exhaust pipe seal ring according to claim 5, wherein: Each annular sliding groove (11) is provided with a smooth inner wall, and each annular sliding block (12) is provided with a smooth outer surface.

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