CN214145635U

CN214145635U - Tail gas aftertreatment encapsulation

Info

Publication number: CN214145635U
Application number: CN202120039663.XU
Authority: CN
Inventors: 孔德智
Original assignee: Shanghai Tenneco Exhaust System Co Ltd
Current assignee: Shanghai Tenneco Exhaust System Co Ltd
Priority date: 2021-01-07
Filing date: 2021-01-07
Publication date: 2021-09-07
Anticipated expiration: 2031-01-07

Abstract

An exhaust aftertreatment package comprising a cylindrical housing, a carrier within the housing, and a liner encapsulating the carrier within the housing, the liner being located between the housing and the carrier, the housing being provided with an axial direction and a radial direction; the casing is equipped with the edge a plurality of first annular portions that axial interval set up and edge the axial is located the second annular portion between two adjacent first annular portions, first annular portion is equipped with first surface, second annular portion is equipped with the second surface, first surface is in the footpath is located the inboard of second surface. With the adoption of the arrangement, the structural strength of the shell is improved, and the deformation resistance of the tail gas aftertreatment package is further enhanced.

Description

Tail gas aftertreatment encapsulation

Technical Field

The utility model relates to a tail gas aftertreatment encapsulation belongs to engine exhaust aftertreatment technical field.

Background

Along with the implementation of the national six-emission regulation, the exhaust temperature and the engine vibration load borne by an exhaust aftertreatment package (such as a catalytic converter package) at a tightly coupled position are obviously increased, and a metal shell frequently used in the national five-emission stage begins to have the phenomena of local non-uniform deformation, even distortion and cracking and the like, so that the carrier is further cracked, and finally the packaging failure of the catalytic converter is caused, and the normal running of a vehicle is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a stronger tail gas aftertreatment encapsulation of anti deformability.

In order to achieve the above purpose, the utility model adopts the following technical scheme: an exhaust aftertreatment package comprising a cylindrical housing, a carrier within the housing, and a liner encapsulating the carrier within the housing, the liner being located between the housing and the carrier, the housing being provided with an axial direction and a radial direction; the casing is equipped with the edge a plurality of first annular portions that axial interval set up and edge the axial is located the second annular portion between two adjacent first annular portions, first annular portion is equipped with first surface, second annular portion is equipped with the second surface, first surface is in the footpath is located the inboard of second surface.

As a further improved technical solution of the present invention, the first annular portion and the second annular portion are coaxially disposed.

As a further improved technical solution of the present invention, the second annular portion has a plurality of portions.

As a further improved technical scheme of the utility model, the casing is equipped with the annular tip that is located both ends, annular tip with first annular portion with the coaxial setting of second annular portion, annular tip is equipped with the third surface, the second surface is in radially be located the inboard of third surface.

Compared with the prior art, the casing of the present invention is provided with a plurality of first annular portions arranged at intervals along the axial direction and a second annular portion located between two adjacent first annular portions along the axial direction, the first annular portions are provided with first outer surfaces, the second annular portion is provided with second outer surfaces, and the first outer surfaces are located at inner sides of the second outer surfaces in the radial direction; with the adoption of the arrangement, the structural strength of the shell is improved, and the deformation resistance of the tail gas aftertreatment package is further enhanced.

Drawings

Fig. 1 is a schematic perspective view of the casing of the exhaust aftertreatment package of the present invention before packaging.

FIG. 2 is a schematic cross-sectional view of a preformed exhaust aftertreatment package formed by inserting the mat and carrier together into the housing in an axial direction of the housing.

Fig. 3 is a schematic perspective view of the fairing assembled with a pre-formed exhaust aftertreatment package and the first jaw driven radially against the housing.

Fig. 4 is a top view of fig. 3.

Fig. 5 is a schematic sectional view taken along line a-a in fig. 4.

Fig. 6 is a perspective view of one of the first jaws of fig. 3 with an outer wall surface removed to expose a plurality of second jaws thereon.

Fig. 7 is a schematic sectional view taken along line B-B in fig. 6.

Fig. 8 is a partially enlarged view of a picture frame portion C of fig. 7.

Fig. 9 is a partial cross-sectional view of fig. 6.

Fig. 10 is a partial cross-sectional view of one of the first jaws and one of the second jaws of fig. 9 in positional relationship to each other after squeezing the housing.

Fig. 11 is a top view of a first jaw.

Fig. 12 is a rear view of the first jaw of fig. 11.

Fig. 13 is a top view of a second jaw.

Fig. 14 is a rear view of the second jaw of fig. 13.

Fig. 15 is a perspective view of the housing of fig. 7.

Fig. 16 is a front view of fig. 15.

Detailed Description

Referring to fig. 1 to 16, the present invention discloses a method for manufacturing an exhaust gas post-treatment package 100, which includes the following steps:

s1: providing a cylindrical housing 1 (shown in fig. 1);

s2: providing a carrier 2;

s3: providing a liner 3;

s4: wrapping a gasket 3 on the carrier 2, and inserting the gasket 3 and the carrier 2 together into the shell 1 along the axial direction O of the shell 1 to form a preformed exhaust gas aftertreatment package 101 (shown in fig. 2); at this time, a gap between the inner surface of the case 1 and the outer surface of the carrier 2 is H.

S5: providing a shaping device 4, wherein the shaping device 4 comprises a plurality of first claws 5 distributed along the circumferential direction and second claws 6 matched with the first claws 5, and the first claws 5 and the second claws 6 can move along the radial direction R of the shell 1;

s5: assembling the shaping device 4 with the pre-formed exhaust gas aftertreatment package 101, wherein the shaping device 4 is located at the periphery of the pre-formed exhaust gas aftertreatment package 101;

s6: driving the first jaw 5 and the second jaw 6 to press the housing 1 in a radial direction R to reduce the diameter of the housing 1 (as shown in fig. 5); at this time, the clearance between the inner surface of the case 1 after the press deformation and the inner surface of the case 1 before the press deformation is h 1.

S7: the second jaws 6 are driven to press the housing 1 further in the radial direction R to form a number of first annular portions 11 and second annular portions 12 between two adjacent first annular portions 11 in the axial direction O. Referring to fig. 9 and 10, the pressing depth of the second jaw 6 relative to the first jaw 5 is h 2.

Referring to fig. 5 to 7, the first jaw 5 is provided with a receiving groove 50 for receiving the second jaw 6 along the radial direction R. In the illustrated embodiment of the present invention, each of the first claws 5 is provided with a plurality of second claws 6 arranged at intervals along the axial direction O. Referring to fig. 11 to 14, the width of the inner side surface of the first jaw 5 is w1, the height of the first jaw 5 is l1, the width of the inner side surface of the second jaw 6 is w2, and the height of the second jaw 6 is l2, wherein: w1 is greater than w2 and l1 is greater than l 2.

In one embodiment of the present invention, in step S6, the inner surface 51 of the first jaw 5 and the inner surface 61 of the second jaw 6 are flush, and the first jaw 5 and the second jaw 6 co-press the housing 1.

The exhaust gas aftertreatment package 100 manufactured by the above method includes a cylindrical case 1, a carrier 2 located in the case 1, and a gasket 3 encapsulating the carrier 2 in the case 1, the gasket 3 being located between the case 1 and the carrier 2. The casing 1 is equipped with axial O and radial R, casing 1 is equipped with along a plurality of first annular portions 11 that axial O interval set up and along second annular portion 12 that axial O is located between two adjacent first annular portions 11. The first annular portion 11 is provided with a first outer surface 111, the second annular portion 12 is provided with a second outer surface 121, and the first outer surface 111 is located inside the second outer surface 121 in the radial direction R.

In the illustrated embodiment of the present invention, the first annular portion 11 and the second annular portion 12 are coaxially disposed. The second annular portion 12 has a plurality of.

The housing 1 is provided with annular end portions 13 at both ends, the annular end portions 13 being arranged coaxially with the first annular portion 11 and the second annular portion 12. The annular end portion 13 is provided with a third outer surface 131, and the second outer surface 121 is located inside the third outer surface 131 in the radial direction.

Compared with the prior art, the utility model discloses an increase local deformation structure (for example first annular portion 11) on the surface of casing 1, improved casing 1's rigidity has reduced casing 1's deformation risk, and then has strengthened tail gas aftertreatment encapsulation 100's resistance to deformation ability has improved tail gas aftertreatment encapsulation 100's reliability.

The above embodiments are only used for illustrating the present invention and not for limiting the technical solutions described in the present invention, and the understanding of the present specification should be based on the technical personnel in the technical field, and although the present specification has described the present invention in detail with reference to the above embodiments, the skilled personnel in the art should understand that the technical personnel in the technical field can still modify or substitute the present invention, and all the technical solutions and modifications thereof that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. An exhaust aftertreatment package comprising a cylindrical housing, a carrier within the housing, and a liner encapsulating the carrier within the housing, the liner being located between the housing and the carrier, the housing being provided with an axial direction and a radial direction; the method is characterized in that: the casing is equipped with the edge a plurality of first annular portions that axial interval set up and edge the axial is located the second annular portion between two adjacent first annular portions, first annular portion is equipped with first surface, second annular portion is equipped with the second surface, first surface is in the footpath is located the inboard of second surface.

2. The exhaust aftertreatment package of claim 1, wherein: the first annular portion and the second annular portion are coaxially disposed.

3. The exhaust aftertreatment package of claim 1, wherein: the second annular part is provided with a plurality of annular parts.

4. The exhaust aftertreatment package of claim 1, wherein: the casing is equipped with the annular end portion that is located both ends, annular end portion with first annular portion with the coaxial setting of second annular portion, annular end portion is equipped with the third surface, the second surface is in the footpath is located the inboard of third surface.