CN115898612A - Catalytic conversion device and vehicle - Google Patents

Abstract

The invention provides a catalytic conversion device and a vehicle, the catalytic conversion device includes: a catalyst, a supercharger, and a muffler. The first end of catalyst converter is equipped with the return bend that admits air, and the second end of catalyst converter is equipped with the blast pipe, and the entrance point of the return bend that admits air is equipped with first flange. The outlet end of the supercharger is provided with a second flange, the second flange is connected with the first flange through a hoop structure, and the butt joint of the second flange and the first flange is abutted through a first sealing ring. The silencer passes through the clamp structure and is connected with the blast pipe, and the butt joint department of silencer and blast pipe carries out the butt through the second sealing washer. In the invention, the hoop structure and the hoop structure are matched with the sealing ring for use, the connecting part is sealed in a wrapping manner, compared with a flange connecting structure, the connecting part and the sealing ring are uniformly stressed, and the phenomenon that the leakage amount is larger due to uneven stress is avoided.

Description

Catalytic conversion device and vehicle

Technical Field

The invention relates to the technical field of vehicles, in particular to a catalytic conversion device and a vehicle.

Background

The motor vehicle emission is an important component of the national environmental protection strategy, and the structure and process of the emission after-treatment system influence the emission performance of the whole vehicle, especially the connection structure of the emission after-treatment system.

At present, the connecting parts of the catalytic converter, the supercharger and the silencer adopt a three-hole or porous flange connecting structure, the leakage amount of the connecting structure is large, and meanwhile, the connecting structure is high in weight and cost and inconvenient to assemble and disassemble.

In view of the above problems, no effective solution has been proposed.

Disclosure of Invention

The invention mainly aims to provide a catalytic conversion device and a vehicle, and aims to solve the technical problem that leakage quantity at the joint of a catalytic converter, a supercharger and a silencer is large.

In order to achieve the above object, according to one aspect of the present invention, there is provided a catalytic conversion apparatus comprising: the first end of the catalytic converter is provided with an air inlet bent pipe, the second end of the catalytic converter is provided with an exhaust pipe, and the inlet end of the air inlet bent pipe is provided with a first flange; the outlet end of the supercharger is provided with a second flange, the second flange is connected with the first flange through a hoop structure, and the butt joint of the second flange and the first flange is abutted through a first sealing ring; the silencer passes through the clamp structure and is connected with the blast pipe, and the butt joint department of silencer and blast pipe carries out the butt through the second sealing washer.

Furthermore, the first flange and the second flange are in matched butt joint through the first limiting structure, and the silencer and the exhaust pipe are in matched butt joint through the second limiting structure.

Further, first limit structure includes: the first groove is of an annular structure and is formed on the end face of the first flange; the first bulge is of an annular structure and formed on the end face of the second flange, at least part of the first bulge is inserted into the first groove, the first sealing ring is sleeved on the first bulge, and the second flange is abutted to the first flange through the first sealing ring.

Further, at least partial blast pipe inserts in the silencer, and second limit structure includes: the second groove is formed on the outer side wall surface of the exhaust pipe; and the second bulge is formed on the inner side surface of the silencer, and at least part of the second bulge is inserted into the second groove.

Furthermore, an expansion part is formed at the outlet end of the exhaust pipe, the expansion part arches outwards along the circumferential direction of the exhaust pipe, the inlet end of the silencer is horn-shaped, and the silencer is sleeved on the expansion part.

Furthermore, the isolating groove is formed in the outlet end face of the air inlet bent pipe and is of an annular structure, the isolating groove is provided with a first annular face close to the outer wall of the air inlet bent pipe and a second annular face far away from the outer wall of the air inlet bent pipe, the first end of the catalytic converter is inserted into the isolating groove and is attached to the first annular face, and the wall thickness of the first end of the catalytic converter is smaller than the groove width of the isolating groove.

Furthermore, the outlet end of the air inlet elbow is provided with a flow guide structure, and the flow guide structure is a flow guide fin arranged around the inner side wall of the air inlet elbow.

Further, the catalyst includes: a catalyst body; the heat shield is sleeved on the outer wall of the catalyst body and comprises at least two housings, and the at least two housings are radially spliced and bound through a binding band.

Further, the air inlet elbow is of an integrally formed casting structure.

According to another aspect of the present invention, there is provided a vehicle including the catalytic conversion apparatus described above.

According to the technical scheme, the first end of the catalytic converter is provided with the air inlet bent pipe, the second end of the catalytic converter is provided with the exhaust pipe, the air inlet bent pipe is connected with the supercharger through the hoop structure, and the exhaust pipe and the silencer are connected through the hoop structure. The hoop structure and the hoop structure are matched with the sealing ring for use, the connecting part is packaged and sealed, and compared with a flange connecting structure, the connecting part and the sealing ring are uniformly stressed, so that the phenomenon that leakage is large due to uneven stress is avoided. Compared with a flange connection structure, the butt flange at the connection part only plays a butt joint role, so that the butt flange at the connection part can be properly reduced in thickness, the exhaust pipe and the silencer can be directly butted without butting the flanges, and the weight of the whole structure is further reduced. In addition, the hoop structure and the hoop structure are matched with the sealing ring for use, the mounting points are few, and the production beat is shortened due to the convenience in disassembly and assembly.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 shows a schematic structural diagram of an embodiment of a catalytic conversion device according to the present invention;

figure 2 shows a schematic structural view of an embodiment of a first limit stop arrangement according to the invention;

figure 3 shows a schematic structural view of an embodiment of a second limit stop arrangement according to the invention;

FIG. 4 shows a schematic distribution of isolation trenches;

FIG. 5 shows a schematic distribution of flow directing structures;

FIG. 6 shows a schematic structural view of a catalyst body;

fig. 7 shows a schematic view of the heat shield.

Wherein the figures include the following reference numerals:

10. a catalyst; 11. a catalyst body; 12. a heat shield; 13. binding a belt; 14. ridge forming;

20. an air inlet bent pipe; 21. a first flange; 22. an isolation trench; 23. a guide fin; 24. a first annulus; 25. a second annulus;

30. an exhaust pipe; 31. an expanding portion;

40. a second flange;

50. a muffler;

60. a hoop structure; 61. a first seal ring; 62. a first groove; 63. a first protrusion;

70. a hoop structure; 71. a second seal ring; 72. a second groove; 73. a second protrusion.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the accompanying drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.

Referring to fig. 1 through 7, according to an embodiment of the present application, a catalytic conversion apparatus is provided.

Specifically, the catalytic conversion device includes: catalyst 10, supercharger, and muffler 50. The first end of the catalyst 10 is provided with an inlet elbow 20, the second end of the catalyst 10 is provided with an exhaust pipe 30, and the inlet end of the inlet elbow 20 is provided with a first flange 21. The outlet end of the supercharger is provided with a second flange 40, the second flange 40 is connected with the first flange 21 through a hoop structure 60, and the butt joint of the second flange 40 and the first flange 21 is abutted through a first sealing ring 61. The muffler 50 is connected to the exhaust pipe 30 by a clip structure 70, and the joint between the muffler 50 and the exhaust pipe 30 is abutted by a second seal 71.

In the embodiment of the present application, the first end of the catalyst 10 is provided with an intake elbow 20, the second end of the catalyst 10 is provided with an exhaust pipe 30, the intake elbow 20 is connected with the supercharger through a hoop structure 60, and the exhaust pipe 30 and the muffler 50 are connected through a hoop structure 70. The hoop structure 60 and the hoop structure 70 are used in cooperation with the sealing ring to wrap the connecting part for sealing, and compared with a flange connecting structure, the connecting part and the sealing ring are uniformly stressed, so that the phenomenon that leakage is large due to uneven stress is avoided. Compared with a flange connection structure, the butting flange at the connection part only plays a butting role, so that the butting flange at the connection part can be properly reduced in thickness, the exhaust pipe 30 and the silencer 50 can be directly butted without butting flanges, and the weight of the whole structure is further reduced. In addition, hoop structure 60 and hoop structure 70 use with the sealing washer cooperatees, and the erection site is few, and easy dismounting has shortened the takt time.

Wherein, in order to realize accurate and rapid butt joint between each connecting portion, the first flange 21 and the second flange 40 are in butt joint in a matching way through the first limiting structure, and the silencer 50 and the exhaust pipe 30 are in butt joint in a matching way through the second limiting structure.

As shown in fig. 2, the first limiting structure includes: a first recess 62 and a first projection 63. The first groove 62 is of an annular structure, the first groove 62 is formed in the end face of the first flange 21, the first protrusion 63 is of an annular structure, the first protrusion 63 is formed in the end face of the second flange 40, at least part of the first protrusion 63 is inserted into the first groove 62, the first sealing ring 61 is sleeved on the first protrusion 63, and the second flange 40 is abutted to the first flange 21 through the first sealing ring 61.

It should be noted that, in order to increase the contact area between the first flange 21 and the second flange 40, an annular groove is formed on the end surface of the second flange 40, the annular groove is disposed around the first protrusion 63, and the first sealing ring 61 is disposed in the annular groove, wherein the depth of the annular groove is slightly smaller than the thickness of the first sealing ring 61, so that the first sealing ring 61 and the end surface of the first flange 21 are elastically pressed.

As shown in fig. 3, the exhaust pipe 30 is butted against the muffler 50 without using a flange in order to reduce the weight of the entire structure. Specifically, at least a part of the exhaust pipe 30 is inserted into the muffler 50, and the second limit structure includes: a second groove 72 and a second protrusion 73, the second groove 72 being formed on the outer side wall surface of the exhaust pipe 30, the second protrusion 73 being formed on the inner side surface of the muffler 50, at least a part of the second protrusion 73 being inserted into the second groove 72.

In order to adapt to the clamp structure 70, the outlet end of the exhaust pipe 30 is formed with an expansion portion 31, the expansion portion 31 is arched outward along the circumferential direction of the exhaust pipe 30, the inlet end of the muffler 50 is flared, and the muffler 50 is sleeved on the expansion portion 31. In the present embodiment, the exhaust pipe 30 is integrally formed with a hump pipe, which is the above-described expanding portion 31. The second seal ring 71 is interposed between the outer wall of the exhaust pipe 30 and the inner wall of the muffler 50, and in order to prevent the second seal ring 71 from axially moving, the second seal ring 71 is integrally formed on the clamp structure 70.

To avoid the problem of weld failure at the joint, the inlet elbow 20 is an integrally cast structure. Specifically, the first flange 21, the oxygen sensor mount, and the taper pipe are integrally formed on the intake elbow 20, wherein the taper pipe is located at the end of the intake elbow 20, and the intake elbow 20 is welded to the catalytic converter 10 through the taper pipe.

The welding seam is greatly affected by temperature, the high temperature may cause cracking of the welding seam, and in order to make the welding position of the intake elbow 20 and the catalyst 10 more stable, a heat insulation structure is provided at the welding position. Specifically, as shown in fig. 4, an isolation groove 22 is opened on the outlet end face of the inlet elbow 20, that is, the isolation groove 22 is disposed at the end of the conical pipe, the isolation groove 22 is of an annular structure, the isolation groove 22 has a first annular surface 24 close to the outer wall of the inlet elbow 20 and a second annular surface 25 far from the outer wall of the inlet elbow 20, the first end of the catalyst is inserted into the isolation groove 22 and is attached to the first annular surface 24, wherein the wall thickness of the first end of the catalyst is smaller than the groove width of the isolation groove 22. The arrangement of the isolation groove 22 enables a space to exist between the first annular surface 24 and the second annular surface 25, so that the heat conduction performance is reduced, the first annular surface 24 is kept at a lower temperature, and the welding seam is prevented from being influenced by high temperature.

Further, as shown in fig. 5, the outlet end of the air inlet elbow 20 is provided with a flow guiding structure, which is a flow guiding fin 23 disposed around the inner side wall of the air inlet elbow 20. The arrangement of the flow guide structure ensures that the airflow entering the catalytic converter is more uniform, and the outlet end of the air inlet elbow 20 and the catalytic converter are uniformly heated.

Further, as shown in fig. 6 and 7, the catalyst 10 includes: catalyst converter body 11 and separate heat exchanger 12, separate the heat exchanger 12 cover and establish on catalyst converter body 11's outer wall, separate heat exchanger 12 and include two at least enclosers, two at least enclosers radially splice, and bind through bandage 13. In this embodiment, the heat shield 12 includes two housings, a clamping structure or an inserting structure is provided between the two housings, the two housings are bundled by using the binding band 13 after the two housings are butted, wherein a limiting groove for accommodating the binding band 13 is provided on the housing to avoid axial movement of the binding band 13. The two shells are fixed by means of straps 13, which, in comparison with welding, can be suitably reduced in thickness, thus reducing the weight of the whole structure, and without the risk of cracking.

As shown in fig. 6, a temperature sensor mount, a differential pressure sensor mount, and an oxygen sensor mount are formed in the middle of the catalyst body 11. The ridge 14 is arranged at the lower part of the middle part of the catalyst body 11, and when the diameter reducing process is carried out on the catalyst body 11, the ridge 14 can prevent the mounting surfaces of the sensors at the middle part from deforming so as to ensure the sealing performance of the catalyst.

According to another specific embodiment of the present invention, there is provided a vehicle including a catalytic conversion device that is the catalytic conversion device in the above embodiment.

For ease of description, spatially relative terms such as "over 8230 \ 8230;,"' over 8230;, \8230; upper surface "," above ", etc. may be used herein to describe the spatial relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; 'above" may include both orientations "at 8230; \8230;' above 8230; 'at 8230;' below 8230;" above ". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition to the foregoing, it should be noted that reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally throughout this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the invention to effect such feature, structure, or characteristic in connection with other embodiments.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A catalytic conversion apparatus, characterized by comprising:

the catalytic converter comprises a catalytic converter (10), wherein a first end of the catalytic converter (10) is provided with an air inlet bent pipe (20), a second end of the catalytic converter (10) is provided with an exhaust pipe (30), and an inlet end of the air inlet bent pipe (20) is provided with a first flange (21);

the outlet end of the supercharger is provided with a second flange (40), the second flange (40) is connected with the first flange (21) through a hoop structure (60), and the butt joint of the second flange (40) and the first flange (21) is abutted through a first sealing ring (61);

the silencer (50), silencer (50) pass through clamp structure (70) with exhaust pipe (30) are connected, silencer (50) with the butt joint department of exhaust pipe (30) carries out the butt joint through second sealing washer (71).

2. A catalytic conversion device according to claim 1, characterized in that the first flange (21) and the second flange (40) are in mating abutment with each other through a first stop structure, and the muffler (50) and the exhaust pipe (30) are in mating abutment with each other through a second stop structure.

3. The catalytic conversion apparatus of claim 2, wherein the first limit structure comprises:

a first groove (62), wherein the first groove (62) is of an annular structure, and the first groove (62) is formed on the end face of the first flange (21);

the first protrusion (63) is of an annular structure, the first protrusion (63) is formed on the end face of the second flange (40), at least part of the first protrusion (63) is inserted into the first groove (62), the first protrusion (63) is sleeved with the first sealing ring (61), and the second flange (40) is abutted to the first flange (21) through the first sealing ring (61).

4. A catalytic conversion apparatus according to claim 2, wherein at least part of the exhaust pipe (30) is inserted into the muffler (50), and the second limit structure comprises:

a second groove (72), the second groove (72) being formed on an outer side wall surface of the exhaust pipe (30);

a second protrusion (73), wherein the second protrusion (73) is formed on the inner side surface of the muffler (50), and at least part of the second protrusion (73) is inserted into the second groove (72).

5. The catalytic converter according to claim 4, wherein an expanding portion (31) is formed at the outlet end of the exhaust pipe (30), the expanding portion (31) is outwardly arched along the circumferential direction of the exhaust pipe (30), the inlet end of the muffler (50) is formed in a horn shape, and the muffler (50) is fitted over the expanding portion (31).

6. The catalytic converter according to claim 1, characterized in that an isolating groove (22) is formed on an outlet end face of the inlet elbow (20), the isolating groove (22) has an annular structure, the isolating groove (22) has a first annular surface (24) close to the outer wall of the inlet elbow (20) and a second annular surface (25) far away from the outer wall of the inlet elbow (20), the first end of the catalyst is inserted into the isolating groove (22) and attached to the first annular surface (24), and the wall thickness of the first end of the catalyst is smaller than the groove width of the isolating groove (22).

7. A catalytic conversion device according to claim 1, characterized in that the outlet end of the inlet elbow (20) is provided with flow guiding structures, which are flow guiding fins (23) arranged around the inner side wall of the inlet elbow (20).

8. A catalytic conversion device according to claim 1, characterized in that the catalyst (10) comprises:

a catalyst body (11);

separate heat exchanger (12), it establishes to separate heat exchanger (12) cover on the outer wall of catalyst body (11), separate heat exchanger (12) including two at least enclosers, at least two the enclosers radially splice, bind through bandage (13).

9. A catalytic converter according to claim 1, characterized in that the inlet elbow (20) is of cast construction, in one piece.

10. A vehicle comprising a catalytic conversion device, characterized in that the catalytic conversion device is the catalytic conversion device according to any one of claims 1 to 9.

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