Support ring and catalyst

Abstract

This article provides a support ring and a catalyst. The support ring includes an annular support ring body, a thrust portion and an abutment portion. The support ring body is telescopically deformable in the axial direction. The thrust portion is provided at the first end of the support ring body in the axial direction. The abutment portion is provided at the second end of the support ring body in the axial direction. The abutment portion includes an abutment surface extending in the circumferential direction, and the abutment surface faces the side away from the support ring body. By providing a support ring structure that is telescopically deformable in the axial direction, the movement of the installed object in the axial direction can be limited, the assembly process requirements can be simplified, and the assembly efficiency can be improved. Applying the support ring to catalyst products can greatly simplify the packaging process of the catalyst and reduce the packaging cost of the catalyst.

Description

Technical Field

[0001] The present invention relates to but is not limited to the field of vehicle technology, and in particular to a support ring and a catalyst. Background Art

[0002] The existing catalyst packaging process usually involves inserting the carrier and the gasket into the cylinder, then using a shaping machine to shape the packaged cylinder, or using GBD (Gap Bulk Density) to reduce the overall diameter, and finally welding the inlet end cone at the air inlet end of the catalyst and the outlet end cone at the air outlet end to complete the installation and manufacturing of the catalyst.

[0003] In the existing technology, after the cylinder is shaped or the GBD is overall reduced in diameter, a gasket is used to maintain the axial and radial stability of the carrier. As emission pollution becomes increasingly serious, the country is also further tightening emission regulations. In order to adapt to stricter regulations, the catalyst carrier has a tendency to increase the mesh number and reduce the wall thickness, and the strength of the carrier will become lower and lower. In this way, the precision requirements for the shaping or reduction of the cylinder will be increased, and more advanced equipment will be needed to achieve stricter precision control. In addition, the quality requirements for the gasket are also getting higher and higher. As a result, the packaging process of the catalyst faces the dilemma of complexity and high cost.

[0004] It should be noted that the above contents belong to the technical knowledge of the inventor and do not necessarily constitute prior art. Summary of the invention

[0005] An embodiment of the present application provides a support ring, which includes an annular support ring body, a thrust portion and an abutment portion. The support ring body is telescopically deformable in the axial direction. The thrust portion is arranged at a first end of the support ring body in the axial direction. The abutment portion is arranged at a second end of the support ring body in the axial direction. The abutment portion includes an abutment surface extending in the circumferential direction, and the abutment surface faces a side away from the support ring body.

[0006] Another embodiment of the present application provides a catalyst, which includes a cylinder, a catalyst carrier disposed in the cylinder, and the support ring, wherein one end of the catalyst carrier abuts against the abutment surface extending into the cylinder of the catalyst.

[0007] After adopting the above technical solution, the embodiment of the present application has the following beneficial effects:

[0008] By providing a support ring that can be flexibly deformed in the axial direction, the axial movement of the installed object can be restricted, the assembly process requirements can be simplified, and the assembly efficiency can be improved. The support ring is applied to catalyst products, which can greatly simplify the packaging process of the catalyst and reduce the packaging cost of the catalyst.

[0009] Other aspects will be apparent upon reading and understanding the drawings and detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The accompanying drawings are used to provide further understanding of the technical solution of this article and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of this article and do not constitute a limitation on the technical solution of this article.

[0011] Figure 1 It is a structural cross-sectional view of a catalyst in the prior art;

[0012] Figure 2 This is a schematic structural diagram of a support ring according to an embodiment of the present application;

[0013] Figure 3 This is a partial side structural schematic diagram of a support ring according to an embodiment of the present application;

[0014] Figure 4 This is a schematic cross-sectional view of the structure of a support ring according to an embodiment of the present application;

[0015] Figure 5 It is a cross-sectional schematic diagram of a catalyst according to an embodiment of the present application.

[0016] Reference numerals:

[0017] 100-catalyst;

[0018] 1-carrier, 2-liner, 3-cylinder, 31-reduced diameter portion, 4-inlet end cone, 5-outlet end cone;

[0019] 200-support ring;

[0020] 6-support ring body, 61-support sheet, 62-elastic sheet;

[0021] 7-thrust portion, 71-third transition portion;

[0022] 8-abutment portion, 81-first transition portion;

[0023] 9- socket portion, 91- second transition portion, 92- guide portion. DETAILED DESCRIPTION

[0024] The technical solution of this article is further described below in conjunction with the accompanying drawings and through specific implementation methods. It is understood that the specific embodiments described here are only used to explain this article, rather than to limit this article.

[0025] like Figure 1As shown, a commonly used packaging process of a catalyst is shown. The prior art generally inserts the carrier 1 and the gasket 2 of the catalyst 100 into the cylinder 3. Then, the encapsulated cylinder 3 is shaped by a shaping machine, or the cylinder 3 is overall reduced in diameter by the GBD method. Finally, the inlet end cone 4 is welded at the inlet end of the catalyst 100, and the outlet end cone 5 is welded at the outlet end, completing the overall manufacturing process of the catalyst 100.

[0026] In one embodiment of the present application, Figure 2-Figure 4 As shown, 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 abutment portion 8 are sequentially connected and arranged. According to the actual manufacturing process, the above three components can be integrally formed. The support ring body 6 can be telescopically deformed in the axial direction, wherein the material of the support ring body 6 can be selected from elastic materials, such as spring steel. The thrust portion 7 is arranged at the first end of the support ring body 6 in the axial direction, that is, Figure 4 The abutment portion 8 is provided at the second end of the support ring body 6 along the axial direction, that is, Figure 4 The left end of the support ring 200. The abutment portion 8 includes an abutment surface extending in the circumferential direction, and the abutment surface can be set as a surface extending outward in the circumferential direction. When the support ring 200 is matched with the counterpart, the abutment surface of the abutment portion 8 fits with the matching surface of the counterpart, which can provide a stable axial support force for the counterpart. The abutment surface is defined as the side facing away from the support ring body 6, so that it is in direct contact with the counterpart.

[0027] Since the support ring body 6 is telescopically deformable along the axial direction, it can provide a stable axial supporting force after being matched with the counterpart, thereby effectively simplifying the complexity of the assembly process, improving the assembly efficiency, and reducing the production cost.

[0028] After the support ring 200 is installed in the catalyst 100, the packaging process of the carrier 1 of the catalyst 100 can also be simplified. The current GBD process is very complicated, requires high precision, and has high equipment costs. After adopting the above-mentioned support ring 200, the original GBD station can be reduced, and the traditional press-fit (insertion) process can meet the installation accuracy requirements. With the implementation of the National VI emission standards, the traditional press-fit (insertion) process cannot achieve the packaging control accuracy of the carrier 1. After adding this support ring 200, the packaging accuracy can meet the requirements.

[0029] In some exemplary embodiments, Figure 4As shown, the abutting portion 8 also includes a first transition portion 81 disposed between the second end of the support ring body 6 and the abutting surface. The cross section of the first transition portion 81 can be set to an arc shape, and can be set to a circular arc shape, so that the support ring 200 has good elasticity. Among them, the first transition portion 81 has a first groove that opens outward, such as the groove feature described in the dotted box in the figure. When the abutting surface abuts against the end face of the object supported by the support ring 200, the axial movement of the supported object can be better limited.

[0030] In some exemplary embodiments, Figure 4 As shown, the support ring 200 also includes a sleeve portion 9 connected to the abutment surface. When the support ring 200 is matched with the supported object, the sleeve portion 9 contacts the outer wall of the object, so that the sleeve portion 9 produces a certain amount of deformation. The sleeve portion 9 is arranged on the side of the abutment surface away from the support ring body 6, so that during the assembly process, the object first contacts the sleeve portion 9 slowly, that is, the object is slowly inserted into the support ring 200, and then the object is made to fit with the abutment surface on the abutment portion 8.

[0031] The sleeve portion 9 is provided with a squeeze surface extending in the circumferential direction, that is, the squeeze surface is configured to generate an inward squeeze force on the object when the support ring 200 is sleeved on the outer side of the object, so as to firmly install the support ring 200 on the sleeved object, simplify the assembly difficulty, and facilitate the support ring 200 and the installed object to enter the next step together. The sleeve portion 9 is also provided with a second transition portion 91 between the squeeze surface and the abutment surface. Similarly, the cross section of the second transition portion 91 is configured to be arc-shaped, so that the connection between the sleeve portion 9 and the abutment portion 8 also has good elasticity.

[0032] The second transition portion 91 is provided with a second groove opening inward, as shown in the groove feature in the dotted frame in the figure. The second transition portion 91 and the above-mentioned first transition portion 81 form an S-shaped cross-section, which can improve the ability of the support ring 200 to expand and contract along the axial direction.

[0033] In some exemplary embodiments, Figure 4 As shown, in order to improve the convenience of installation of the support ring 200, a guide portion 92 connected to the clamping surface is provided at the end of the sleeve portion 9, that is, the end away from the thrust portion 7, wherein the guide portion 92 can be arranged as an inclined surface inclined outward, that is, the guide portion 91 can be arranged in a trumpet shape, and the small diameter end of the guide portion 92 is close to the clamping surface, and the large diameter end of the guide portion 92 is close to the outermost side, that is, the end where the installation operation is performed first.

[0034] In some exemplary embodiments, Figure 4As shown, similarly, in order to improve the stability of the contact and cooperation between the other end of the support ring 200 and the installed object, a thrust surface extending in the circumferential direction is further provided on the thrust portion 7. 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 also provided between the thrust surface and the first end of the support ring body 6. Similarly, the cross-section of the third transition portion 71 can also be set to an arc shape, and a third groove opening outward is also formed on the third transition portion 71, as shown in FIG. Figure 4 The groove feature is shown in the dashed box.

[0035] In some exemplary embodiments, the support ring body 6 is configured as a ring as a whole, and the cross section of the support ring body 6 is arc-shaped, that is, there is a certain curvature, such as Figure 5 As shown, the diameter of the second end of the support ring body 6 is smaller than the diameter of the first end, which can improve the ability of the support ring body 6 to expand and contract along the axial direction. According to actual needs, the local area of ​​the end face of the support ring body 6 can also be set to a serrated shape to weaken the rigidity of the support ring body 6.

[0036] like Figure 2 , Figure 3 As shown, the support ring body 6 can be provided to include a plurality of support sheets 61 spaced apart on the circumference, and an elastic sheet 62 connecting two adjacent support sheets 61. The cross section of the support sheet 61 can be provided to be arc-shaped, and the diameter of the second end of the support sheet 61 is smaller than the diameter of the first end. In addition, the axial dimension of the elastic sheet 62 can be provided to be smaller than the axial dimension of the support sheet 61, so as to achieve the effect of weakening the rigidity of the support ring body 6. The elastic sheet 62 can be provided to be an inwardly convex groove, and the cross section of the groove can be provided to be V-shaped to enhance the weakening effect. When the support ring 200 contacts the installed object, the support ring 200 undergoes axial deformation, and the elastic sheet 62 can achieve a certain degree of radial deformation, so that the installation of the support ring 200 is more stable. Based on the structure that the support ring body 6 includes the support sheet 61 and the elastic sheet 62, as shown in FIG. Figure 2 , Figure 3 As shown, the thrust portion 7 and the abutment portion 8 are respectively arranged at the two ends of the support sheet 61 along the axial direction, that is, the thrust portion 7 and the abutment portion 8 features are no longer arranged on the elastic sheet 62, which can reduce the use of materials and reduce the cost of the product.

[0037] In addition, in another embodiment of the present application, Figure 5 As shown, a catalyst 100 is also provided. The catalyst 100 described herein is different from Figure 1The existing catalyst 100 shown in the figure is not individually numbered here. The catalyst 100 provided in the embodiment of the present application includes a cylinder 3 and a catalyst carrier 1 disposed in the cylinder 3, and further includes any of the above-mentioned support rings 200. One end of the carrier 1 of the catalyst 100 is in abutment with the abutment surface of the support ring 200 extending into the cylinder 3 of the catalyst 100.

[0038] The structure of the catalyst 100 described above allows the axial force on the carrier 1 to be provided by the support ring 200, thereby reducing the strength requirement for the cylinder 3, increasing the size of the carrier 1, and reducing the requirement for the wall thickness of the cylinder 3. It also reduces the accuracy level requirement for the inner diameter and cylindricity of the cylinder 3, and reduces the accuracy level requirement for the outer diameter and cylindricity of the carrier 1, that is, reducing the overall production cost of the catalyst 100. In some exemplary embodiments, such as Figure 5 As shown, the catalyst 100 also includes an annular gasket 2, which is arranged between the cylinder 3 and the carrier 1. Similarly, the strength requirement of the gasket 2 can be reduced. Compared with the prior art, the gasket 2 only needs to provide radial support force, and the axial support force is provided by the support ring 200. For the ceramic carrier, the mesh number of the ceramic carrier can be increased, the material thickness of the gasket 2 can be reduced, the packaging process complexity of the catalyst 100 can be simplified, and the production efficiency can be improved.

[0039] In some exemplary embodiments, Figure 5 As shown, when the support ring 200 is configured to have the structural feature of the sleeve portion 9, in order to improve the assembly 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 the space enclosed by the opposite surfaces formed by the cylinder 3 and the carrier 1, and the above-mentioned sleeve portion 9 is inserted into the space enclosed by the gasket 2, the inner wall of the cylinder 3, and the outer wall of the carrier 1.

[0040] In some exemplary embodiments, Figure 5As shown, an external thread is provided at one end of the cylinder 3 of the catalyst 100 that cooperates with the support ring 100, and a matching internal thread is provided on the mounting piece that cooperates with the catalyst 100, so that the catalyst 100 together with the support ring 200 is screwed onto the mounting piece, 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 into the catalyst 100 from the air inlet end, that is, the left end shown in the figure, in order to reduce the corrosive destructiveness of exhaust gas to the gasket 2 of the catalyst 100, and also to reduce the impact force of the airflow on the gasket 2, a reduced diameter portion 31 is provided at the end of the cylinder 3 of the catalyst 100 away from the support ring 200, wherein the inner diameter of the reduced diameter portion 31 is smaller than the inner diameter of the gasket 2, that is, the radial opening of the reduced diameter portion 31 is smaller than the inner diameter of the gasket 2, so that the exhaust gas does not blow directly onto the gasket 2. Therefore, the gasket 2 can be effectively prevented from being eroded by exhaust gas, thereby increasing the service life of the gasket 2. The gasket 2 can be made of a material with lower corrosion resistance, which can further reduce the production cost of the product.

[0041] In the description of this document, the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "relative", "four corners", "periphery", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred structure has a specific orientation, is constructed and operated in a specific orientation, and therefore should not be understood as a limitation on this document.

[0042] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the terms "connection", "direct connection", "indirect connection", "fixed connection", "installation", and "assembly" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; the terms "installation", "connection", and "fixed connection" can be a direct connection, or an indirect connection through an intermediate medium, or can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in this article can be understood according to specific circumstances.

[0043] Although the embodiments disclosed herein are as above, the contents described are only embodiments adopted to facilitate understanding of the present invention and are not intended to limit the present invention. Any technician in the field to which the present invention belongs may make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed herein, but the scope of patent protection of the present invention shall still be defined by the attached claims.

Claims

1. A support ring, characterized in that: The invention comprises an annular support ring body, a thrust portion and an abutment portion; the support ring body is telescopically deformable in the axial direction, the thrust portion is arranged at a first end of the support ring body in the axial direction, the abutment portion is arranged at a second end of the support ring body in the axial direction, the abutment portion comprises an abutment surface extending in the circumferential direction, and the abutment surface faces a side away from the support ring body; The abutment portion further comprises a first transition portion with an arc-shaped cross section arranged between the second end of the support ring body and the abutment surface, wherein the first transition portion forms a first groove opening outward; the abutment surface is arranged to abut against the end surface of the object supported by the support ring to limit the axial movement of the object; The support ring further comprises a sleeve portion connected to the abutment surface, the sleeve portion being located on a side of the abutment surface away from the support ring body; the sleeve portion comprises a clamping surface extending in the circumferential direction, and a second transition portion with an arc-shaped cross section arranged between the clamping surface and the abutment surface, the second transition portion being formed as a second groove opening inwardly, the clamping surface being arranged to be sleeved on the outer side surface of the object and to generate an inward clamping force; The support ring body is arranged in a ring shape, the cross section of the support ring body is arc-shaped, and the diameter of the second end of the support ring body is smaller than the diameter of the first end; the support ring body comprises a plurality of support sheets spaced apart on the circumference and an elastic sheet connecting two adjacent support sheets; the cross section of the support sheet is arc-shaped, and the diameter of the second end of the support sheet is smaller than the diameter of the first end.

2. The support ring according to claim 1, characterized in that: The sleeve connection portion further comprises a trumpet-shaped guide portion connected to the pressing surface, and the guide portion is located on a side of the pressing surface away from the support ring body.

3. The support ring according to claim 1, characterized in that: The thrust portion includes a thrust surface extending in the circumferential direction, and a third transition portion with an arc-shaped cross section arranged between the thrust surface and the first end, wherein the third transition portion is formed as a third groove opening outward.

4. The support ring according to any one of claims 1 to 3, characterized in that: The thrust portion and the abutting portion are arranged at two ends of the support piece along the axial direction.

5. A catalyst, comprising a cylinder, and a catalyst carrier arranged in the cylinder, characterized in that: It also includes the support ring according to claim 1 or 2, wherein one end of the catalyst carrier is in abutment with the abutment surface extending into the cylinder of the catalyst.

6. The catalyst according to claim 5, characterized in that The catalyst further comprises an annular gasket, which is arranged between the cylinder and the carrier; the sleeve portion is inserted into a space surrounded by the gasket, the inner wall of the cylinder and the carrier.

7. The catalyst according to claim 6, characterized in that A reduced diameter portion is provided at one end of the cylinder of the catalyst away from the support ring, and the inner diameter of the reduced diameter portion is smaller than the inner diameter of the gasket.

8. A catalyst, comprising a cylinder, and a catalyst carrier arranged in the cylinder, characterized in that: It also includes the support ring as claimed in claim 3 or 4, wherein one end of the carrier of the catalyst is in abutment with the abutment surface extending into the cylinder of the catalyst.

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