Pipeline connecting structure, exhaust pipeline, engine system and vehicle

Abstract

The utility model relates to the technical field of engines, and discloses a pipeline connecting structure, an exhaust pipeline, an engine system and a vehicle, and the pipeline connecting structure comprises a first connecting piece, a second connecting piece and a third connecting piece, the second connecting piece is provided with a sealing outer wall; the sealing ring is positioned between the sealing outer wall and the sealing inner wall; and the fastening mechanism is configured to be capable of driving the movable part and the fixed part to apply fastening force to the sealing ring in the radial direction of the sealing ring, so that the sealing outer wall of the second connecting piece is clamped to the sealing inner wall of the first connecting piece. In this way, fastening force can be applied in the radial direction of the sealing ring through the fastening mechanism, so that the sealing outer wall of the second connecting piece is clamped to the sealing inner wall of the first connecting piece, assembling is completed, operation is easy, the situation that the sealing ring is axially deformed is avoided, the sealing effect of the sealing ring is effectively guaranteed, and then the situation of leakage is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of engine, especially a pipeline connecting structure, exhaust pipeline, engine system and vehicle. BACKGROUND

[0002] The exhaust pipeline is a necessary structure of the vehicle, which can discharge exhaust gas, filter exhaust gas and reduce noise and shock.

[0003] For most of the existing split exhaust pipe, the sealing ring is pressed and has elasticity to tightly contact the inner hole wall of the exhaust pipe to play a sealing role; in order to ensure the connection stability and sealing of the two pipeline, an axial force is usually applied to the exhaust pipe during assembly to assemble the sealing ring in place, which is difficult to assemble, and if the axial force is too large, the sealing ring will be deformed axially, which will cause the exhaust pipe to leak.

[0004] Therefore, how to reduce the assembly difficulty of the split exhaust pipe and reduce the leakage of the split exhaust pipe has become a technical problem to be solved in the field. SUMMARY

[0005] The utility model aims at least solve how to reduce the assembly difficulty of the split exhaust pipe, and can reduce the leakage of the split exhaust pipe. The purpose is realized by the following technical scheme:

[0006] In the first aspect, the utility model provides a pipeline connecting structure, which comprises: a first connecting piece having a first cavity, the first cavity having a sealing inner wall, the first connecting piece comprising a fixed part and a movable part connected detachably, the fixed part having a first inner wall, the movable part having a second inner wall, the first inner wall and the second inner wall cooperating to form the sealing inner wall; a second connecting piece having a second cavity communicating with the first cavity, the second connecting piece further having a sealing outer wall, the sealing inner wall being sleeved on the sealing outer wall; at least one sealing ring, the sealing ring being sleeved on the sealing outer wall, and the sealing ring being located between the sealing outer wall and the sealing inner wall; and a fastening mechanism configured to apply a fastening force to the sealing ring along the radial direction of the sealing ring by driving the movable part and the fixed part.

[0007] The pipeline connecting structure, when assembled, first sets the sealing ring on the sealing outer wall of the second connecting piece, then places the sealing outer wall on the first inner wall of the fixed part, then installs the movable part so that the second inner wall of the movable part and the first inner wall of the fixed part form the sealing inner wall and ensure that the sealing inner wall is sleeved on the sealing outer wall, that is, the first connecting piece is sleeved on the outside of the second connecting piece, and the sealing ring is between the sealing inner wall and the sealing outer wall, finally, the fastening mechanism is used to apply a fastening force along the radial direction of the sealing ring so that the sealing outer wall of the second connecting piece is clamped on the sealing inner wall of the first connecting piece, and the assembly is completed. When the pipeline connecting structure is assembled, the sealing ring does not need to be forced in the axial direction of the pipeline connecting structure, the operation is simple, and the axial deformation of the sealing ring is avoided, thereby effectively ensuring the sealing effect of the sealing ring and reducing the leakage.

[0008] In some embodiments of the utility model, the fixed part has a first connecting part, the movable part has a second connecting part corresponding to the first connecting part, and the first connecting part is connected to the second connecting part by a fastening mechanism to apply a fastening force to the sealing ring along the radial direction of the sealing ring.

[0009] In some embodiments of the utility model, the fixed part is symmetrically provided with two first connecting parts, each first connecting part is provided with a first threaded hole, the movable part is symmetrically provided with two second connecting parts, each second connecting part is provided with a second threaded hole, and the fastening mechanism includes two screws; in any one set of corresponding first connecting parts, second connecting parts and screws, the screw is arranged in the first threaded hole and the second threaded hole to connect the first connecting part and the second connecting part.

[0010] In some embodiments of the utility model, the fastening mechanism is two, the fixed part is symmetrically provided with two first connecting parts, each first connecting part is provided with a buckle, the movable part is symmetrically provided with two second connecting parts, and each second connecting part is provided with a buckling part; in any one set of corresponding first connecting parts and second connecting parts, the buckle and the buckling part are clamped and matched to connect the first connecting part and the second connecting part, and the buckle and the buckling part form a fastening mechanism.

[0011] In some embodiments of the utility model, the first connecting piece and the second connecting piece are arranged along the first direction, and the fixed part is further provided with a limiting part for limiting the movement of the second connecting piece along the first direction to the side close to the fixed part.

[0012] In some embodiments of the utility model, the sealing inner wall is a circular inner wall, and the sealing outer wall is a circular outer wall.

[0013] In some embodiments of this utility model, the sealing outer wall is characterized by having an annular groove, and the sealing ring is embedded in the annular groove.

[0014] Secondly, this utility model proposes an exhaust pipe, including any of the above-mentioned pipe connection structures. The exhaust pipe further includes: a first pipe, one end of which is used to communicate with the exhaust passage of the engine body, and the other end of which is used to communicate with the first cavity of the first connector; and a second pipe, one end of which is close to the first pipe and is used to communicate with the second cavity of the second connector, and the other end of which is away from the first pipe and is used to communicate with the atmosphere.

[0015] Thirdly, this utility model proposes an engine system, including an engine body and the aforementioned exhaust pipe, wherein the exhaust passage of the engine body is connected to the end of the first pipe that is away from the second pipe.

[0016] Fourthly, this utility model proposes a vehicle, including a body and the aforementioned engine system.

[0017] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0018] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0019] Figure 1 An exploded view of the pipeline connection structure provided in an embodiment of this utility model;

[0020] Figure 2 This is a cross-sectional view of the pipeline connection structure provided in an embodiment of the present utility model.

[0021] The attached figures are labeled as follows:

[0022] 10. Pipeline connection structure;

[0023] 100. First connector; 110. Fixing part; 111. First inner wall; 112. First connecting part; 1121. First threaded hole; 113. Limiting part; 120. Movable part; 121. Second inner wall; 122. Second connecting part; 1221. Second threaded hole;

[0024] 200. Second connecting piece; 201. Sealing outer wall;

[0025] 300. Sealing ring;

[0026] 400. Fastening mechanism; 410. Screw. Detailed Implementation

[0027] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0028] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0029] Although terms such as first, second, third, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0030] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented as "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0031] Figure 1 An exploded view of the pipeline connection structure provided in an embodiment of this utility model; Figure 2 A cross-sectional view of the pipeline connection structure provided in the embodiment of this utility model; as shown Figure 1 and Figure 2 As shown, this utility model embodiment provides a pipeline connection structure 10, including: a first connector 100 having a first cavity with a sealing inner wall, the first connector 100 including a fixed part 110 and a movable part 120 detachably connected, the fixed part 110 having a first inner wall 111, the movable part 120 having a second inner wall 121, the first inner wall 111 and the second inner wall 121 cooperating to form a sealing inner wall; a second connector 200 having a second cavity communicating with the first cavity, the second connector 200 also having a sealing outer wall 201, the sealing inner wall being sleeved on the sealing outer wall 201; at least one sealing ring 300, the sealing ring 300 being sleeved on the sealing outer wall 201, and the sealing ring 300 being located between the sealing outer wall 201 and the sealing inner wall; and a fastening mechanism 400, the fastening mechanism 400 being configured to drive the movable part 120 and the fixed part 110 to apply a fastening force to the sealing ring 300 along the radial direction of the sealing ring 300.

[0032] In this embodiment, during assembly, the sealing ring 300 is first fitted onto the sealing outer wall 201 of the second connector 200, and then the sealing outer wall 201 is placed on the first inner wall 111 of the fixing part 110. Then, the movable part 120 is installed so that the second inner wall 121 of the movable part 120 and the first inner wall 111 of the fixing part 110 form a sealing inner wall, and the sealing inner wall is fitted onto the sealing outer wall 201, that is, the first connector 100 is fitted onto the outside of the second connector 200, and the sealing ring 300 is located between the sealing inner wall and the sealing outer wall 201. Finally, the fastening mechanism 400 applies a fastening force along the radial direction of the sealing ring 300 so that the sealing outer wall 201 of the second connector 200 is engaged with the sealing inner wall of the first connector 100, thus completing the assembly.

[0033] During assembly, this type of pipe connection structure 10 does not require applying force to the sealing ring 300 along the axial direction of the pipe connection structure 10, making the operation simple and avoiding axial deformation of the sealing ring 300. This effectively ensures the sealing effect of the sealing ring 300 and reduces leakage.

[0034] Therefore, it is easy to understand that if this pipe connection structure 10 is applied to a split exhaust pipe, that is, the two exhaust pipe sections are connected by the pipe connection structure 10, the technical effect of reducing the assembly difficulty of the split exhaust pipe and reducing the leakage of the split exhaust pipe can be achieved.

[0035] refer to Figure 1 According to an optional embodiment of the present invention, the fixed part 110 has a first connecting part 112, and the movable part 120 has a second connecting part 122 corresponding to the first connecting part 112. The first connecting part 112 is connected to the second connecting part 122 through a fastening mechanism 400 so that the movable part 120 and the fixed part 110 apply a fastening force to the sealing ring 300 in the radial direction of the sealing ring 300.

[0036] In this embodiment, a method is provided to apply a fastening force to the sealing ring 300 along the radial direction of the sealing ring 300, namely, a first connecting part 112 is provided in the fixed part 110 and a second connecting part 122 is provided in the movable part 120. It is easy to understand that, in order to improve assembly efficiency, the first connecting part 112 should be provided on the outer wall of the fixed part 110 and the second connecting part 122 should be provided on the outer wall of the movable part 120 to facilitate the installation of the fastening mechanism 400.

[0037] It should be noted that the specific shape, size and type of the first connecting part 112, the second connecting part 122 and the fastening mechanism 400 are not specifically limited, as long as they can enable the moving part 120 and the fixed part 110 to apply a fastening force to the sealing ring 300 in the radial direction of the sealing ring 300. The specific requirements should be determined according to actual needs.

[0038] The specific structures of the first connecting part 112, the second connecting part 122, and the fastening mechanism 400 are illustrated below:

[0039] like Figure 1 As shown, specifically, according to an optional embodiment of the present invention, the fixing part 110 is symmetrically provided with two first connecting parts 112, each first connecting part 112 being provided with a first threaded hole 1121, the movable part 120 is symmetrically provided with two second connecting parts 122, each second connecting part 122 being provided with a second threaded hole 1221, and the fastening mechanism 400 includes two screws 410; in any pair of corresponding first connecting parts 112, second connecting parts 122 and screws 410, the screws 410 pass through the first threaded hole 1121 and the second threaded hole 1221 to connect the first connecting part 112 and the second connecting part 122.

[0040] In this embodiment, as described above, both first connecting parts 112 can be disposed on the outer wall of the fixing part 110, and correspondingly, both second connecting parts 122 are disposed on the outer wall of the fixing part 110. During assembly, when the first connecting member 100 is sleeved on the outside of the second connecting member 200, and the sealing ring 300 is between the sealing inner wall and the sealing outer wall 201, the two screws 410 are passed through the first threaded hole 1121 and the second threaded hole 1221 corresponding to themselves and tightened, so as to apply a fastening force to the sealing ring 300 along the radial direction of the sealing ring 300, and finally realize that the sealing outer wall 201 of the second connecting member 200 is engaged with the sealing inner wall of the first connecting member 100, thus completing the assembly.

[0041] This configuration allows for the assembly of the pipeline connection structure 10 via threaded connection. While facilitating assembly, it also ensures that the sealing outer wall 201 of the second connector 200 can be stably engaged with the sealing inner wall of the first connector 100, thus effectively guaranteeing the sealing effect of the sealing ring 300 and reducing the occurrence of leakage.

[0042] It is easy to understand that the number of the first connecting part 112, the second connecting part 122, and the screw 410 in this embodiment is only for illustrative purposes. In actual working conditions, the number should be based on the specific working requirements and there is no limit to the number.

[0043] In addition, according to an optional embodiment of the present invention, there are two fastening mechanisms 400. The fixed part 110 is symmetrically provided with two first connecting parts 112, each of which is provided with a buckle. The movable part 120 is symmetrically provided with two second connecting parts 122, each of which is provided with a fastening part. In any pair of corresponding first connecting parts 112 and second connecting parts 122, the buckle and the fastening part engage to connect the first connecting part 112 and the second connecting part 122. The buckle and the fastening part constitute a fastening mechanism 400.

[0044] In this embodiment, similarly as described above, both first connecting parts 112 can be disposed on the outer wall of the fixing part 110, and correspondingly, both second connecting parts 122 are disposed on the outer wall of the fixing part 110. During assembly, when the first connecting member 100 is sleeved on the outside of the second connecting member 200 and the sealing ring 300 is between the sealing inner wall and the sealing outer wall 201, the two buckles and their corresponding fastening parts are connected respectively to apply a fastening force to the sealing ring 300 along the radial direction of the sealing ring 300, so as to finally make the sealing outer wall 201 of the second connecting member 200 snap into the sealing inner wall of the first connecting member 100, thus completing the assembly.

[0045] Similarly, this setup allows for the assembly of the pipeline connection structure 10 via snap-fit ​​connections. While facilitating assembly, it also ensures that the sealing outer wall 201 of the second connector 200 can be stably snapped onto the sealing inner wall of the first connector 100, thus effectively guaranteeing the sealing effect of the sealing ring 300 and reducing the occurrence of leaks.

[0046] It is easy to understand that the number of the first connecting part 112, the second connecting part 122, and the buckle and fastening part in this embodiment is only for illustrative purposes. In actual working conditions, the number should be based on the specific working conditions and there is no limit to the number.

[0047] refer to Figure 2 According to an optional embodiment of the present invention, the first connector 100 and the second connector 200 are arranged along a first direction, and the fixing part 110 is further provided with a limiting part 113, which is used to restrict the second connector 200 from moving along the first direction toward the side closer to the fixing part 110.

[0048] It is easy to understand that, in order to improve the accuracy of the position of the sealing ring 300, the relative position between the first connector 100 and the second connector 200 needs to be defined along the first direction.

[0049] Therefore, in this embodiment, a limiting part 113 is provided on the fixing part 110 of the first connector 100 to ensure that the final sealing ring 300 can be in a suitable position, thereby ensuring that the sealing ring 300 can be subjected to a tightening force along its own radial direction, thereby ensuring the sealing effect of the pipeline connection structure 10.

[0050] like Figure 1 As shown, according to an optional embodiment of the present invention, the sealing inner wall is an annular inner wall and the sealing outer wall 201 is an annular outer wall.

[0051] In this embodiment, both the inner sealing wall and the outer sealing wall 201 are set as annular, which can further ensure the sealing effect of the sealing ring 300 located between them on the pipeline connection structure 10.

[0052] It is easy to understand that, under the premise that the inner sealing wall is a circular inner sealing wall, the first inner wall 111 and the second inner wall 121 are both arc-shaped inner walls, and the sealing ring 300 is also a circular ring structure.

[0053] In addition, it should be noted that the shape of the inner sealing wall and the outer sealing wall 201 is not specifically limited. It should be based on the actual working conditions and ensure that the size and shape of the inner sealing wall and the outer sealing wall 201 match so that the sealing ring 300 can achieve a sealing effect between the first cavity and the second cavity.

[0054] According to an optional embodiment of the present invention, the sealing outer wall 201 is provided with an annular groove, and the sealing ring 300 is embedded in the annular groove.

[0055] In this embodiment, an annular groove is provided on the sealing outer wall 201, which can improve the stability between the sealing ring 300 and the first connector 100, thereby further improving the assembly efficiency and ensuring the sealing effect of the pipeline connection structure 10.

[0056] It is easy to understand that there can be multiple sealing rings 300, for example, multiple sealing rings 300 are spaced apart along the first direction.

[0057] In addition, if there are multiple sealing rings 300, multiple annular grooves can also be provided.

[0058] Specifically, the annular groove can be set one-to-one with the sealing ring 300, that is, the number of sealing rings 300 is the same as the number of annular grooves, and each sealing ring 300 is embedded in an annular groove corresponding to itself; or, multiple sealing rings 300 can be matched with one annular groove, that is, multiple sealing rings 300 are embedded in one annular groove.

[0059] It should be noted that the above solutions are all illustrative examples. The specific number of sealing rings 300 and annular grooves, as well as their corresponding relationship, should be determined according to the actual working conditions and are not limited.

[0060] This utility model embodiment also provides an exhaust pipe, including any of the above-described pipe connection structures 10. The exhaust pipe further includes: a first pipe, one end of which is connected to the exhaust passage of the engine body, and the other end of which is connected to the first cavity of the first connector 100; and a second pipe, one end of which is close to the first pipe and is connected to the second cavity of the second connector 200, and the other end of which is away from the first pipe and is connected to the atmosphere.

[0061] In this embodiment, when assembling this exhaust pipe, the two ends of the first pipe can be connected to the exhaust channel and the first cavity respectively, and then the second pipe can be connected to the second cavity, thus completing the assembly of the first pipe and the second pipe respectively; finally, the first connector 100 and the second connector 200 are assembled together (the specific steps can be referred to the above description of the assembly process of the pipe connection structure 10) to complete the overall assembly of the exhaust pipe.

[0062] It should be noted that the above assembly sequence of the exhaust pipe is only an example, and the actual assembly sequence should be determined according to the specific working conditions.

[0063] This type of exhaust pipe connects the first pipe and the second pipe through the pipe connection structure 10, which can reduce the assembly difficulty of the exhaust pipe and reduce the leakage of the exhaust pipe. For a detailed analysis, please refer to the description of any of the pipe connection structures 10 mentioned above, which will not be repeated here.

[0064] This utility model embodiment also provides an engine system, including an engine body and the aforementioned exhaust pipe, wherein the exhaust passage of the engine body is connected to the end of the first pipe that is away from the second pipe.

[0065] In this embodiment, the beneficial effects of the engine system are the same as those of the exhaust pipe described above, and will not be repeated here.

[0066] This utility model embodiment also provides a vehicle, including a body and the aforementioned engine system.

[0067] In this embodiment, similarly, the beneficial effects of the vehicle are the same as those of the engine system described above, and will not be repeated here.

[0068] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A pipe connection structure, characterized in that, include: A first connector (100) has a first cavity with a sealed inner wall. The first connector (100) includes a fixed part (110) and a movable part (120) that are detachably connected. The fixed part (110) has a first inner wall (111), and the movable part (120) has a second inner wall (121). The first inner wall (111) and the second inner wall (121) cooperate to form the sealed inner wall. The second connector (200) has a second cavity communicating with the first cavity, and the second connector (200) also has a sealing outer wall (201), the sealing inner wall being sleeved on the sealing outer wall (201); At least one sealing ring (300) is fitted onto the outer sealing wall (201), and the sealing ring (300) is located between the outer sealing wall (201) and the inner sealing wall; and A fastening mechanism (400) is configured to drive the movable part (120) and the fixed part (110) to apply a fastening force to the sealing ring (300) radially.

2. The pipeline connection structure according to claim 1, characterized in that, The fixed part (110) has a first connecting part (112), and the movable part (120) has a second connecting part (122) corresponding to the first connecting part (112). The first connecting part (112) is connected to the second connecting part (122) through the fastening mechanism (400) so that the movable part (120) and the fixed part (110) apply a fastening force to the sealing ring (300) in the radial direction of the sealing ring (300).

3. The pipeline connection structure according to claim 2, characterized in that, The fixed part (110) is symmetrically provided with two first connecting parts (112), each first connecting part (112) is provided with a first threaded hole (1121), the movable part (120) is symmetrically provided with two second connecting parts (122), each second connecting part (122) is provided with a second threaded hole (1221), and the fastening mechanism (400) includes two screws (410); In any pair of corresponding first connecting parts (112), second connecting parts (122), and screws (410), the screws (410) pass through the first threaded hole (1121) and the second threaded hole (1221) to connect the first connecting part (112) and the second connecting part (122).

4. The pipeline connection structure according to claim 2, characterized in that, There are two fastening mechanisms (400). The fixed part (110) is symmetrically provided with two first connecting parts (112), each of which is provided with a buckle. The movable part (120) is symmetrically provided with two second connecting parts (122), each of which is provided with a fastening part. In any pair of corresponding first connecting parts (112) and second connecting parts (122), the buckle engages with the fastening part to connect the first connecting part (112) and the second connecting part (122), and the buckle and the fastening part constitute a fastening mechanism (400).

5. The pipeline connection structure according to claim 1, characterized in that, The first connector (100) and the second connector (200) are arranged along a first direction. The fixing part (110) is also provided with a limiting part (113), which is used to restrict the second connector (200) from moving along the first direction toward the side closer to the fixing part (110).

6. The pipeline connection structure according to claim 1, characterized in that, The sealing inner wall is an annular inner wall, and the sealing outer wall (201) is an annular outer wall.

7. The pipeline connection structure according to any one of claims 1-6, characterized in that, The sealing outer wall (201) is provided with an annular groove, and the sealing ring (300) is embedded in the annular groove.

8. An exhaust pipe, comprising the pipe connection structure (10) as described in any one of claims 1-7, characterized in that, The exhaust pipe also includes: A first conduit, one end of which is connected to the exhaust passage of the engine body, and the other end of which is connected to the first cavity of the first connector (100); and The second conduit has one end near the first conduit connected to the second cavity of the second connector (200), and the other end of the second conduit away from the first conduit is used to communicate with the atmosphere.

9. An engine system, characterized in that, It includes an engine body and an exhaust pipe as described in claim 8, wherein the exhaust passage of the engine body is connected to the end of the first pipe opposite to the second pipe.

10. A vehicle, characterized in that, Includes the vehicle body and the engine system as described in claim 9.

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