CN114017167A

CN114017167A - Support ring and catalytic converter

Info

Publication number: CN114017167A
Application number: CN202111183971.0A
Authority: CN
Inventors: 李荣平; 孙旭东; 王可心; 杨建�; 牟宗宝; 夏玉茗; 王瑞平; 肖逸阁
Original assignee: Zhejiang Geely Holding Group Co Ltd; Ningbo Geely Royal Engine Components Co Ltd; Aurobay Technology Co Ltd
Current assignee: Zhejiang Geely Holding Group Co Ltd; Ningbo Geely Royal Engine Components Co Ltd; Aurobay Technology Co Ltd
Priority date: 2021-10-11
Filing date: 2021-10-11
Publication date: 2022-02-08

Abstract

A support ring and a catalyst are provided herein. The support ring includes annular support ring body, thrust portion and butt portion, the scalable deformation of support ring body along the axial, thrust portion locates the support ring body is along axial first end, butt portion locates the support ring body is along axial second end, butt portion includes the butt face that extends along circumference, the butt face orientation is kept away from support ring body one side through setting up the support ring structure of scalable deformation along the axial, can restrict by the removal of installation object along the axial, simplifies the assembly process requirement, improves assembly efficiency. The support ring is applied to a catalyst product, so that the packaging process of the catalyst can be greatly simplified, and the packaging cost of the catalyst is reduced.

Description

Support ring and catalytic converter

Technical Field

This paper relates to but not the vehicle technical field, especially relates to a support ring and catalyst converter.

Background

In the existing catalyst packaging process, a carrier and a gasket are generally plugged into a cylinder, then the packaged cylinder is shaped by a shaping machine, or GBD (gap Bulk density) is adopted for integral diameter reduction, finally, an air inlet end cone is welded at an air inlet end of a catalyst, and an air outlet end cone is welded at an air outlet end of the catalyst, so that the installation and manufacturing of the catalyst are completed.

In the prior art, after the cylinder is shaped or the GBD is wholly reduced in diameter, the axial and radial stabilizing forces of the carrier are kept through the gasket. As emission pollution becomes more and more serious, the country is also further tightening emission regulations. In order to adapt to stricter regulations, the catalyst carrier tends to increase the mesh number and reduce the wall thickness, and the bearing strength of the carrier is lower and lower. This increases the precision required to reshape or reduce the diameter of the cylinder, and requires more sophisticated equipment to achieve tighter precision control. In addition, the quality requirements for the liners are also increasing. Therefore, the packaging process of the catalyst is complicated, and the cost is increased.

The above description is included in the technical recognition scope of the inventors, and does not necessarily constitute the prior art.

Disclosure of Invention

An embodiment of the application provides a support ring, the support ring includes annular support ring body, thrust portion and butt portion, the scalable deformation of support ring body along the axial, thrust portion locates the support ring body is along axial first end, butt portion locates the support ring body is along axial second end, butt portion includes the butt face that extends along circumference, the butt face orientation is kept away from support ring body one side.

Another embodiment of this application provides a catalyst converter, the catalyst converter includes the barrel, sets up the carrier of the catalyst converter in the barrel, still includes the support ring, the one end of the carrier of catalyst converter with stretch into in the barrel of catalyst converter butt face butt cooperation.

After the technical scheme is adopted, the embodiment of the application has the following beneficial effects:

through the support ring which can be telescopically deformed along the axial direction, the mounted object can be limited to move along the axial direction, the assembly process requirement is simplified, and the assembly efficiency is improved. The support ring is applied to a catalyst product, so that the packaging process of the catalyst can be greatly simplified, and the packaging cost of the catalyst is reduced.

Other aspects will be apparent upon reading and understanding the attached drawings and detailed description.

Drawings

The accompanying drawings are included to provide a further understanding of the embodiments herein and are incorporated in and constitute a part of this specification, illustrate embodiments herein and are not to be construed as limiting the embodiments herein.

FIG. 1 is a sectional view showing a structure of a catalyst in the prior art;

FIG. 2 is a schematic structural diagram of a support ring according to an embodiment of the present application;

FIG. 3 is a schematic view of a support ring according to an embodiment of the present disclosure;

FIG. 4 is a schematic cross-sectional view of a support ring according to an embodiment of the present application;

FIG. 5 is a schematic cross-sectional view of a catalyst according to an embodiment of the present application.

Reference numerals:

100-a catalyst;

1-carrier, 2-liner, 3-cylinder, 31-reducing part, 4-inlet end cone and 5-outlet end cone;

200-a support ring;

6-support ring body, 61-support sheet, 62-elastic sheet;

7-thrust, 71-third transition;

8-abutment, 81-first transition;

9-the socket joint, 91-the second transition, 92-the pilot.

Detailed Description

The technical scheme is further explained by the specific implementation mode in combination with the attached drawings. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations.

Fig. 1 shows a conventional packaging process of a catalyst. The prior art generally employs inserting the carrier 1 and the mat 2 of the catalyst 100 into the cylinder 3. Then, the packaged cylinder 3 is shaped by a shaper, or the entire diameter of the cylinder 3 is reduced by a GBD method. Finally, welding a gas inlet end cone 4 at the gas inlet end of the catalyst 100 and welding a gas outlet end cone 5 at the gas outlet end of the catalyst 100 to complete the whole manufacturing process of the catalyst 100.

In one embodiment of the present application, as shown in fig. 2-4, a support ring 200 is provided. The support ring 200 includes an annular support ring body 6, a thrust portion 7, and an abutment portion 8. The thrust portion 7, the support ring body 6, and the abutting portion 8 are connected in this order, and these three components may be integrally formed according to an actual manufacturing process. The support ring body 6 is elastically deformable in the axial direction, wherein the support ring body 6 may be made of an elastic material, such as spring steel. The thrust portion 7 is provided at a first end of the support ring body 6 in the axial direction, i.e., a right end in fig. 4, and the abutment portion 8 is provided at a second end of the support ring body 6 in the axial direction, i.e., a left end in fig. 4. The contact portion 8 includes a contact surface extending in the circumferential direction, and the contact surface may be provided as a surface extending outward in the circumferential direction. When the support ring 200 is mated with the counterpart member, wherein the abutment surface of the abutment portion 8 is fitted with the mating surface of the counterpart member, a stable axial supporting force can be provided for the counterpart member. Wherein the abutment surface is defined as the side facing away from the support ring body 6, making direct contact with the counterpart.

Because the support ring body 6 can be telescopically deformed along the axial direction, stable axial supporting force can be provided after the support ring body is matched with the counterpart piece, the complexity of an assembly process is effectively simplified, the assembly efficiency is improved, and the production cost is reduced.

The packaging process of the carrier 1 of the catalyst 100 can also be simplified when the support ring 200 is mounted in the catalyst 100. At present, the GBD process is complex, the required precision is high, and the equipment cost is high. After the support ring 200 is adopted, the original GBD station can be omitted, and the requirement of installation precision can be met by using the traditional press fitting (plugging) process. With the implementation of the national emission, the traditional press mounting (plugging) process cannot achieve the packaging control precision of the carrier 1, and after the support ring 200 is added, the packaging precision can meet the requirement.

In some exemplary embodiments, as shown in fig. 4, the abutting portion 8 further includes a first transition portion 81 disposed between the second end of the support ring body 6 and the abutting surface, and the cross section of the first transition portion 81 may be set to be arc-shaped, which may be set to be arc-shaped, so that the support ring 200 has better elasticity. The first transition portion 81 has a first groove with an outward opening, such as the groove feature described in the dashed line frame in the figure, when the abutting surface abuts against the end surface of the object supported by the support ring 200, the axial movement of the supported object can be better limited.

In some exemplary embodiments, as shown in fig. 4, the support ring 200 further includes a socket portion 9 connected to the abutting surface, and when the support ring 200 is mated with the supported object, the socket portion 9 contacts with the outer wall of the object, so that the socket portion 9 generates a certain amount of deformation. Locate one side that the support ring body 6 was kept away from to the butt face with cup joint portion 9 for in the in-process of assembly, the object slowly contacts with cup joint portion 9 earlier, is about to slowly inject the object into support ring 200 in, then makes the object laminate mutually with the butt face on the butt portion 8.

Wherein, the portion 9 that cup joints is equipped with along the crowded tight face of circumference extension, and crowded tight face is set up to produce the inside crowded tight power to the object when the support ring 200 cover is established at the outside face of object promptly to firm install the support ring 200 on the object of being established by the cover, simplify the assembly degree of difficulty, make things convenient for the support ring 200 to get into next step's process together with the object of being installed. The sleeve-joint part 9 is also provided with a second transition part 91 between the squeezing surface and the abutting surface, and similarly, the section of the second transition part 91 is arc-shaped, so that the connecting part between the sleeve-joint part 9 and the abutting part 8 has better elasticity.

The second transition portion 91 is provided with a second groove which is opened inwards, such as the groove characteristic described in the dashed line frame in the figure, and the second transition portion 91 and the first transition portion 81 are formed into a cross section similar to an S shape, so that the capability of the support ring 200 to be deformed in an axial direction in a telescopic manner can be improved.

In some exemplary embodiments, as shown in fig. 4, in order to improve the convenience of installing the support ring 200, a guide portion 92 connected to the tightening surface is disposed at the end of the sleeve portion 9, i.e., the end away from the thrust portion 7, wherein the guide portion 92 may be disposed as an inclined surface inclined outward, i.e., the guide portion 91 may be disposed in a trumpet shape, the small diameter end of the guide portion 92 is close to the tightening surface, and the large diameter end of the guide portion 92 is close to the outermost end, i.e., the end where the installation operation is performed first.

In some exemplary embodiments, as shown in fig. 4, similarly, in order to improve the stability of the contact fit between the other end of the support ring 200 and the object to be mounted, a thrust surface extending along the circumferential direction is further provided on the thrust portion 7, and in order to improve the elasticity of the connection portion between the thrust portion 7 and the support ring body 6, a third transition portion 71 is further provided between the thrust surface and the first end of the support ring body 6, and similarly, the cross section of the third transition portion 71 may also be provided in an arc shape, and a third groove opening outward is also formed on the third transition portion 71, as shown by a groove feature in a dashed frame in fig. 4.

In some exemplary embodiments, the support ring body 6 is integrally annular, the cross section of the support ring body 6 is arc-shaped, that is, there is a certain radian, as shown in fig. 5, and the diameter of the second end of the support ring body 6 is smaller than that of the first end, so that the capability of the support ring body 6 to be deformed telescopically along the axial direction can be improved, and according to actual needs, a local area of the end surface of the support ring body 6 can be set to be zigzag, so as to weaken the rigidity of the support ring body 6.

As shown in fig. 2 and 3, the support ring body 6 may include a plurality of support plates 61 spaced apart from each other on the circumference, and an elastic plate 62 connecting two adjacent support plates 61. The supporting sheet 61 may have an arc-shaped cross section, and the diameter of the second end of the supporting sheet 61 is smaller than that of the first end. In addition, the axial dimension of the elastic piece 62 may be set smaller than the axial dimension of the support piece 61, that is, the effect of weakening the rigidity of the support ring body 6 may be achieved, the elastic piece 62 may be provided in a groove shape protruding inward, and the cross section of the groove shape may be provided in a V shape, so as to improve the weakening effect. When the support ring 200 is in contact with an object to be mounted, the support ring 200 is deformed axially, and the elastic sheet 62 can realize a certain degree of radial deformation, so that the support ring 200 can be mounted more stably. Based on the structure that the support ring body 6 includes the support sheet 61 and the elastic sheet 62, as shown in fig. 2 and 3, the thrust portion 7 and the abutting portion 8 are respectively disposed at two ends of the support sheet 61 along the axial direction, that is, the features of the thrust portion 7 and the abutting portion 8 are not disposed on the elastic sheet 62, so that the use of materials can be reduced, and the cost of the product can be reduced.

In addition, in another embodiment of the present application, as shown in fig. 5, there is also provided a catalyst 100, wherein the catalyst 100 is already different from the existing catalyst 100 shown in fig. 1, and no separate reference numerals are given to the parts. The catalyst 100 provided in the embodiment of the present application further includes any one of the support rings 200 described above on the basis of including the cylinder 3 and the catalyst carrier 1 disposed in the cylinder 3. One end of the carrier 1 of the catalyst 100 is in abutting engagement with an abutment surface of the support ring 200 projecting into the cylinder 3 of the catalyst 100.

The structure of the catalytic converter 100 enables the axial force borne by the carrier 1 to be provided by the support ring 200, reduces the strength requirement on the cylinder 3, can improve the size of the carrier 1, reduces the requirement on the wall thickness of the cylinder 3, and simultaneously reduces the precision grade requirements on the inner diameter, the cylindricity and the like of the cylinder 3, and reduces the precision grade requirements on the outer diameter, the cylindricity and the like of the carrier 1, namely reduces the overall production and manufacturing cost of the catalytic converter 100. In some exemplary embodiments, as shown in fig. 5, the catalyst 100 further includes an annular gasket 2, and the gasket 2 is disposed between the cylinder 3 and the carrier 1, and similarly, the requirement on the strength of the gasket 2 can be reduced, compared with the prior art, the gasket 2 only needs to provide a radial supporting force, and an axial supporting force is provided by the supporting ring 200, so that for a ceramic carrier, the mesh number of the ceramic carrier can be increased, the material thickness of the gasket 2 can be reduced, the complexity of the packaging process of the catalyst 100 can be simplified, and the production efficiency can be improved.

In some exemplary embodiments, as shown in fig. 5, when the support ring 200 is configured to have the structural feature of the socket 9, in order to improve the assembling convenience of the support ring 200, the gasket 2 is configured to be relatively shorter than the cylinder 3 and the carrier 1, that is, the gasket 2 is retracted into a space surrounded by the opposite surfaces formed by the cylinder 3 and the carrier 1, and the socket 9 is inserted into a space surrounded by the gasket 2, the inner wall of the cylinder 3, and the outer wall of the carrier 1.

In some exemplary embodiments, as shown in fig. 5, an external thread is provided at one end of the cylinder 3 of the catalyst 100, which is engaged with the support ring 100, and a fitting member engaged with the catalyst 100 is provided with a mating internal thread, so that the catalyst 100 is screwed to the fitting member together with the support ring 200, which effectively simplifies the installation process of the catalyst 100 and improves the assembly efficiency of the final assembly. In addition, when exhaust gas flows in from the air inlet end of the catalyst 100, namely the left end in the drawing, in order to reduce the corrosion damage of the exhaust gas to the gasket 2 of the catalyst 100 and reduce the airflow impact force caused to the gasket 2, a reducing part 31 is arranged at one end of the cylinder 3 of the catalyst 100 far away from the support ring 200, wherein the inner diameter of the reducing part 31 is smaller than the inner diameter of the gasket 2, namely the opening of the reducing part 31 in the radial direction is smaller than the inner diameter of the gasket 2, so that the exhaust gas does not directly blow on the gasket 2, therefore, the gasket 2 can be effectively prevented from being blown by the exhaust gas, the service life of the gasket 2 is prolonged, the gasket 2 can be made of a material with lower corrosion resistance, and the production cost of the product can be further reduced.

In the description herein, the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "opposite", "four corners", "periphery", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing embodiments of the present application and simplifying the description, but do not indicate or imply that the structures referred to have particular orientations, are constructed and operated in particular orientations, and thus, are not to be construed as limiting the present disclosure.

In the description of the embodiments of the present application, unless otherwise explicitly stated or limited, the terms "connected," "directly connected," "indirectly connected," "fixedly connected," "mounted," and "assembled" are to be construed broadly and, for example, may be fixedly connected, detachably connected, or integrally connected; the terms "mounted," "connected," and "fixedly connected" may be directly connected or indirectly connected through intervening media, or may be connected through two elements. The specific meaning of the above terms herein can be understood in a specific context to one of ordinary skill in the art.

Although the embodiments disclosed herein are described above, the descriptions are only for the convenience of understanding the embodiments and are not intended to limit the disclosure. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure, and that the scope of the disclosure herein is to be limited only by the appended claims.

Claims

1. A support ring, comprising an annular support ring body, a thrust portion and an abutment portion; the support ring body is scalable the deformation along the axial, thrust portion locates the support ring body is along axial first end, butt portion locates the support ring body is along axial second end, butt portion includes the butt face that extends along circumference, the butt face orientation is kept away from support ring body one side.

2. The support ring of claim 1, wherein the abutment further comprises a first transition portion of arcuate cross-section disposed between the second end of the support ring body and the abutment surface, the first transition portion forming a first groove that opens outwardly; the abutment surface is arranged to abut against an end surface of an object supported by the support ring to restrict axial movement of the object.

3. The support ring of claim 2, further comprising a socket connected to the abutment surface, the socket being located on a side of the abutment surface away from the support ring body; the socket joint portion comprises a tightening surface extending along the circumferential direction and a second transition portion, wherein the section of the second transition portion is arc-shaped, the second transition portion is formed into a second groove with an inward opening, and the tightening surface is arranged to be sleeved on the outer side surface of the object and generates inward tightening force.

4. The support ring of claim 3, wherein the socket further comprises a flared guide connected to the compacting face, the guide being located on a side of the compacting face away from the support ring body.

5. The support ring of claim 1, wherein the thrust portion includes a circumferentially extending thrust surface, and a third transition portion of arcuate cross-section disposed between the thrust surface and the first end, the third transition portion being formed as a third outwardly opening groove.

6. The support ring of any of claims 1 to 5, wherein the support ring body is configured as a ring, the support ring body is arcuate in cross-section, and the second end of the support ring body has a diameter that is smaller than the diameter of the first end; or

The support ring body comprises a plurality of support sheets distributed at intervals on the circumference and elastic sheets for connecting two adjacent support sheets; the cross section of the supporting sheet is arc-shaped, and the diameter of the second end of the supporting sheet is smaller than that of the first end.

7. The support ring of claim 6, wherein the thrust portion and the abutting portion are provided at both ends of the support piece in the axial direction.

8. A catalytic converter comprising a cylinder and a catalytic converter carrier arranged in the cylinder, characterized by further comprising the support ring of any one of claims 1 to 7, wherein one end of the catalytic converter carrier is in abutting engagement with the abutting surface extending into the cylinder of the catalytic converter.

9. A catalyst according to claim 8, wherein the support ring is provided as a support ring according to claim 3 or 4; the catalyst further includes an annular gasket disposed between the cylinder and the carrier; the sleeve joint part is inserted into a space enclosed by the gasket, the inner wall of the cylinder body and the carrier.

10. The catalytic converter of claim 9 wherein the end of the catalytic converter barrel remote from the support ring is provided with a reduced diameter portion having an internal diameter less than the internal diameter of the gasket.