CN211144614U - Catalyst package - Google Patents

Abstract

The utility model provides a catalyst encapsulation, its includes the casing of integral type and encapsulates catalyst carrier in the casing, the casing includes cylindric encapsulation portion and certainly the integrative end awl that extends of encapsulation portion, encapsulation portion be equipped with the opposite opening that extends of end awl, catalyst carrier pass through the liner certainly the opening is packed into in the encapsulation portion. Compared with the prior art, the utility model discloses a welding between the two has been left out to encapsulation portion and end awl formula structure as an organic whole, easily makes.

Description

Catalyst package

Technical Field

The utility model relates to a catalyst converter encapsulation belongs to engine exhaust aftertreatment technical field.

Background

Referring to fig. 1, the prior art generally adopts the manufacturing method of plugging a carrier 1 ' and a gasket 2 ' into a shell 3 ', then reducing and shaping the packaging shell 3 ' by a shaping machine, and finally welding an end cone 4 ' at one end of the packaging shell to carry out catalyst packaging. The mating of the housing 3 'and the end cone 4' is usually performed in an intercalated manner (e.g. inserting the housing 3 'into the end cone 4' or inserting the end cone 4 'into the housing 3').

Since the shell 3 'and the end cone 4' need to be welded in the welding fitting area 5 'for the entire circumference after insertion, the end cone 4' and the shell 3 'have enough welding area 6'. To ensure that the length of the weld zone 6' is sufficient, it is often necessary to employ a flaring or necking process to ensure a full circumferential diametric dimensional tolerance of the profile to ensure a weld fit. In addition, a transition region 8 ' remains between the reshaping region 7 ' and the welding region 6 ', which inevitably results in an increase in the overall length of the catalyst package. The welding and the manufacture of the end cone require a great deal of time and cost, and the welded part is easy to fail, thereby affecting the durability of the product.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an easily make catalyst packaging.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a catalyst encapsulation, its includes the casing of integral type and encapsulates catalyst carrier in the casing, the casing includes cylindric encapsulation portion and certainly the integrative end awl that extends of encapsulation portion, encapsulation portion be equipped with the opposite opening that extends of end awl, catalyst carrier pass through the liner certainly the opening is packed into in the encapsulation portion.

As the technical scheme of the further improvement of the utility model, the casing is equipped with the axis, the liner is followed the length of axis is less than the catalyst support is followed the length of axis.

As a further improvement, the catalyst carrier has two ends extending along the axis beyond the gasket.

As a further improved technical scheme of the utility model, the catalyst carrier does not extend into in the end cone.

As a further improved technical solution of the present invention, the end cone includes a first tapered section and a second tapered section connected to the first tapered section, wherein the slope of the first outer surface of the first tapered section is greater than the slope of the second outer surface of the second tapered section.

As a further improved technical solution of the present invention, the first tapered section is connected to the encapsulation portion.

As a further improved technical solution of the present invention, the end cone further includes a cylindrical section connected to the second conical section, and the axis of the cylindrical section overlaps with the axis of the encapsulation portion.

As a further improved technical scheme of the utility model, the end cone is made through punching press or spinning.

As a further improved technical scheme of the utility model, be equipped with the installation inclined plane that is used for welding the mount pad on the end awl.

As a further improved technical scheme of the utility model, the installation inclined plane is equipped with the through-hole.

Compared with the prior art, the utility model discloses a welding between the two has been left out to encapsulation portion and end awl formula structure as an organic whole, easily makes.

Drawings

FIG. 1 is a schematic cross-sectional view of a catalyst package in the prior art.

Figure 2 is a top view of the catalyst package of the present invention.

Fig. 3 is a schematic sectional view taken along line a-a in fig. 2.

Detailed Description

Referring to fig. 2 and 3, the present invention discloses a catalyst package 100, which includes an integrated housing 1 and a catalyst carrier 2 enclosed in the housing 1. The housing 1 includes a cylindrical enclosure portion 11 and an end cone 12 integrally extending from the enclosure portion 11. The packing portion 11 is provided with an opening 111 extending opposite to the end cone 12, and the catalyst carrier 2 is inserted into the packing portion 111 from the opening 111 through the gasket 3. The end cone 12 may be disposed at either the inlet end or the outlet end. After the catalyst carrier 2 wrapped with the mat 3 is inserted into the packing portion 111, the shaping region (i.e., the region where the packing portion 11 is located) can be shaped by the shaping device to control the GBD.

The housing 1 is provided with an axis 112, and the length of the mat 3 along the axis 112 is smaller than the length of the catalyst carrier 2 along the axis 112. Both ends of the catalyst carrier 2 extend beyond the mat 3 along the axis 112, respectively. The catalyst support body 2 does not extend into the end cone 12.

The end cone 12 comprises a first conical section 121 and a second conical section 122 connected to the first conical section 121, wherein the slope K1 of the first outer surface 1211 of the first conical section 121 is greater than the slope K2 of the second outer surface 1221 of the second conical section 122. So configured, through this transition, the manufacture of the end cone 12 is facilitated. Furthermore, in the illustrated embodiment of the present invention, the first tapered section 121 is connected to the encapsulation 11. The end cone 12 further comprises a cylindrical section 123 connected to the second conical section 122, the axis 1231 of the cylindrical section 123 overlapping the axis 112 of the enclosure 11.

In one embodiment of the present invention, the end cone 12 is formed by stamping or spinning. The end cone 12 is provided with a mounting bevel 124 for welding a mounting seat (not shown). The welding installation seat can be a sensor installation seat or a nozzle installation seat and the like according to different application requirements. The mounting ramp 124 is provided with a through-hole 1241 so that a corresponding element can extend from the through-hole 1241 into the end cone 12.

Compared with the prior art, the utility model discloses a packaging part 11 and end awl 12 formula structure as an organic whole (being a part) have left out the welding between the two, have saved welding process and welding equipment and have dropped into, easily make. In addition, the end cone 12 and the packaging part 11 which are integrated only control the shaping of GBD in one step, welding is not needed, necking or flaring of a welding area is not needed, a transition area is not needed, the design space is saved, and the length of the integrated shell 1 can be shortened.

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 (10)

1. The utility model provides a catalyst encapsulation, its includes the casing of integral type and encapsulates catalyst carrier in the casing, its characterized in that, the casing includes cylindric encapsulation portion and certainly the integrative end awl that extends of encapsulation portion, encapsulation portion be equipped with the opening that the end awl extends opposite, catalyst carrier pass through the liner certainly the opening is stuffed in the encapsulation portion.

2. The catalyst package of claim 1, wherein: the housing is provided with an axis, and the length of the mat along the axis is smaller than the length of the catalyst carrier along the axis.

3. The catalyst package of claim 2, wherein: both ends of the catalyst carrier extend beyond the mat along the axis, respectively.

4. The catalyst package of claim 1, wherein: the catalyst support does not extend into the end cone.

5. The catalyst package of claim 1, wherein: the end cone comprises a first conical section and a second conical section connected with the first conical section, wherein the slope of the first outer surface of the first conical section is larger than that of the second outer surface of the second conical section.

6. The catalyst package of claim 5, wherein: the first tapered section is connected to the encapsulation.

7. The catalyst package of claim 5, wherein: the end cone further comprises a cylindrical section connected with the second conical section, and the axis of the cylindrical section is overlapped with the axis of the packaging part.

8. The catalyst package of claim 1, wherein: the end cone is made by stamping or spinning.

9. The catalyst package of claim 1, wherein: and the end cone is provided with an installation inclined plane for welding the installation seat.

10. The catalyst package of claim 9, wherein: the installation inclined plane is provided with a through hole.

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