WO2021212744A1

WO2021212744A1 - Exhaust gas post-treatment package

Info

Publication number: WO2021212744A1
Application number: PCT/CN2020/118255
Authority: WO
Inventors: 于百战; 李伟
Original assignee: 天纳克（苏州）排放系统有限公司
Priority date: 2020-04-21
Filing date: 2020-09-28
Publication date: 2021-10-28
Also published as: CN111365104A

Abstract

An exhaust gas post-treatment package (100), comprising an outer housing (1), a first post-treatment carrier assembly (51) located within the outer housing (1), and a second post-treatment carrier assembly (52); and the second post-treatment carrier assembly (52) comprises a second housing (521) and a diesel particle trap (522) enclosed within the second housing (521), the outer housing (1) being provided with an opening (111) for detaching the second post-treatment carrier assembly (52). The exhaust gas post-treatment package (100) also comprises a cylindrical portion (23) sleeved on the periphery of the second housing (521) and a seal (523) sandwiched between the second housing (521) and the cylindrical portion (23); and the cylindrical portion (23) is provided with a protrusion portion that extends in the axial direction. The exhaust gas post-treatment package (100) further comprises an end plate (525) fixed to the second housing (521), a cross bar (24) that passes through the protrusion portion and abuts against the protrusion portion, and a force applying component mounted on the cross bar (24); and the force applying component can rotate so as to push the end plate (525) to thereby enable the seal (523) to be tightly sealed between the second housing (521) and the cylindrical portion (23).

Description

Exhaust post-treatment package

This application claims the priority of a Chinese patent application whose application date is April 21, 2020, the application number is 202010315267.5, and the invention title is "Exhaust Gas Post Treatment Package", the entire content of which is incorporated into this application by reference.

Technical field

The invention relates to a tail gas post-treatment package, belonging to the technical field of engine tail gas post-treatment.

Background technique

With the upgrade of emission regulations, some exhaust gas aftertreatment packages include diesel particulate traps. Diesel particulate trap is used to collect particulate matter in diesel exhaust gas. When the particulate matter is collected to a certain extent, the diesel particulate trap needs to be cleaned, otherwise it will seriously increase the back pressure of the system, which is not conducive to the normal operation of the system.

In the prior art, in order to facilitate the disassembly of the diesel particulate trap, some disassembly structures are designed. However, how to make the diesel particulate trap be sealed at the installation position when the diesel particulate trap is installed into the exhaust gas post-treatment package is in the technical field. Technical problems that technicians need to solve.

Summary of the invention

The object of the present invention is to provide an exhaust gas post-treatment package that can better realize the sealing at the installation position of the second post-treatment component.

To achieve the above objective, the present invention adopts the following technical solution: an exhaust gas after-treatment package, which includes an outer shell, a first after-treatment component located in the outer shell, and a second after-treatment component located downstream of the first after-treatment component. A processing assembly, the second post-processing assembly includes a second housing and a diesel particulate trap enclosed in the second housing, and the outer housing is provided with an opening for detaching the second after-processing assembly; The exhaust gas post-treatment package includes a cylindrical body part sleeved on the periphery of the second shell and a sealing member clamped between the second shell and the cylindrical body part; the cylindrical body part is provided with A protrusion extending in the axial direction, the exhaust gas aftertreatment package further comprising an end plate fixed to the second housing, a cross bar passing through the protrusion and abutting on the protrusion And a force application member installed on the cross bar, the force application member can be rotated to push the end plate so that the sealing member can be tightly sealed between the second housing and the barrel portion .

As a further improved technical solution of the present invention, the exhaust gas after-treatment package includes an end cover assembly for matching with the opening.

As a further improved technical solution of the present invention, the exhaust gas post-treatment package is provided with a first flange located at the opening, and the end cover assembly includes an end cover and a second flange formed on the end cover, The exhaust gas after-treatment package further includes a clamp that detachably connects the first flange and the second flange, and a first flange clamped between the first flange and the second flange. Gasket.

As a further improved technical solution of the present invention, the barrel portion is provided with a first step portion, the second housing is provided with a second step portion, and the seal is sleeved on the second housing The second sealing gasket is clamped between the first step portion and the second step portion in the axial direction.

As a further improved technical solution of the present invention, the force application member is a bolt, and the cross bar is provided with an internal thread that cooperates with the bolt.

As a further improved technical solution of the present invention, the end plate is welded and fixed to the second housing, and the end plate is provided with a plurality of pressing surfaces; there are a plurality of bolts, and the bolts can push the Said resist pressure noodles.

As a further improved technical solution of the present invention, the protrusion includes two first protrusions and two second protrusions, the first protrusions are respectively provided with a first perforation, and the second protrusion The starting parts are respectively provided with second perforations; the crossbar includes a first crossbar passing through the two first perforations and a second crossbar passing through the two second perforations, the first crossbar Two bolts are installed on the second crossbar.

As a further improved technical solution of the present invention, the first crossbar and the second crossbar are detachably mounted on the first protrusion and the second protrusion.

As a further improved technical solution of the present invention, the first cross bar is provided with a first groove for clamping the first protrusion, and the second cross bar is provided with a first groove for clamping the second protrusion. Section of the second groove.

As a further improved technical solution of the present invention, the first aftertreatment assembly includes a first housing and a diesel oxidation catalyst enclosed in the first housing, and both the first housing and the second housing contain In the cylinder part; the exhaust gas after-treatment package includes a first baffle and a second baffle that are located in the outer shell and are arranged at intervals, and the cylinder part penetrates the first baffle and the second baffle A baffle, and the cylindrical body part is welded and fixed to the first baffle and the second baffle.

Compared with the prior art, the present invention is provided with an end plate fixed to the second housing, and the end plate is pushed by a force applying member, so that the sealing element can be tightly sealed between the second housing and the barrel. Between the body.

Description of the drawings

Fig. 1 is a front view of an exhaust gas post-treatment package of the present invention in an embodiment.

Fig. 2 is a schematic cross-sectional view taken along the line J-J in Fig. 1.

FIG. 3 is a partial enlarged view of the circled part M in FIG. 2.

Fig. 4 is a partially exploded perspective view of Fig. 1.

Fig. 5 is a further perspective exploded view of Fig. 4.

Fig. 6 is a further perspective exploded view of Fig. 5.

Detailed ways

The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. If there are several specific embodiments, the features in these embodiments can be combined with each other without conflict. When the description refers to the accompanying drawings, unless otherwise specified, the same numbers or symbols in different drawings represent the same or similar elements. The contents described in the following exemplary embodiments do not represent all the embodiments of the present invention, on the contrary, they are only examples of products consistent with the present invention described in the claims of the present invention.

The terms used in the present invention are only for the purpose of describing specific implementations, and are not intended to limit the protection scope of the present invention. It should be understood that the terms "first", "second" and similar words used in the description and claims of the present invention do not denote any order, quantity or importance, but are only used to distinguish features. .

1 to 6, the present invention discloses an exhaust gas after-treatment package 100, which includes an outer casing 1, a first baffle 21 and a second baffle 22 located in the outer casing 1 and arranged at intervals , The intake pipe 31 for the exhaust gas to enter, the exhaust pipe 32 for the exhaust gas to flow out, the first post-processing carrier component 51 and the second post-processing carrier component 52.

In one embodiment of the present invention, the first post-processing carrier assembly 51 includes a first housing 511 and a diesel oxidation catalyst (DOC) 512 enclosed in the first housing 511; The processing carrier assembly 52 includes a second housing 521 and a diesel particulate filter (DPF) 522 enclosed in the second housing 521; the second post-processing carrier assembly 52 is located in the first post-processing carrier assembly 51 downstream.

Please refer to FIG. 2, the exhaust gas after-treatment package 100 includes a cylindrical portion 23 penetrating through the first baffle 21 and the second baffle 22, and is clamped between the second housing 521 and the The seal 523 between the cylinder parts 23. The cylindrical portion 23 is welded and fixed to the first baffle 21 and the second baffle 22. The first housing 511 and the second housing 521 are both contained in the cylindrical portion 23. The cylindrical portion 23 is provided with a protrusion extending in the axial direction. The exhaust gas after-treatment package 100 further includes an end plate 525 fixed to the second housing 521, a cross bar 24 that passes through the protrusion and abuts on the protrusion, and is installed on the The force application member on the crossbar 24. The force application member can rotate to push the end plate 525 so that the sealing member 523 can be tightly sealed between the second housing 521 and the cylindrical portion 23. In an embodiment of the present invention, the sealing member 523 is a second sealing gasket sleeved on the second housing 521. The cylinder portion 23 is provided with a first step portion 231, the second housing 521 is provided with a second step portion 524, and the second sealing gasket is clamped between the first step portion 231 and the first step portion 231 in the axial direction. Between the second step portions 524.

Specifically, the end plate 525 and the second housing 521 are welded and fixed, and the end plate 525 is provided with a plurality of pressing surfaces 5251. In the illustrated embodiment of the present invention, there are four pressing surfaces 5251, which are evenly distributed along the circumferential direction. In the illustrated embodiment of the present invention, the force application member is a bolt 1131, and the cross bar 24 is provided with an internal thread 240 that cooperates with the bolt 1131.

The protruding portion includes two first protruding portions 232 and two second protruding portions. The first protruding portions 232 are respectively provided with first through holes 2321, and the second protruding portions are respectively provided with first through holes 2321. Two perforations; the crossbar 24 includes a first crossbar 241 passing through the two first perforations 2321 and a second crossbar 242 passing through the two second perforations, the first crossbar 241 and Two bolts 1131 are installed on each of the second cross bars 242. The bolt 1131 can push the pressing surface 5251 when rotating.

The first cross-bar 241 and the second cross-bar 242 are detachably mounted on the first protrusion 232 and the second protrusion. The first cross bar 241 is provided with a first groove 2411 for holding the first protrusion 232, and the second cross bar 242 is provided with a second recess 2411 for holding the second protrusion. Slot 2421.

When assembling, first pass one end of the first cross bar 241 through one of the first perforations 2321; then adjust the other end of the first cross bar 241 to be aligned with the other first perforation 2321; The other end of the rod 241 is inserted into the corresponding first through hole 2321. At this time, the first groove 2411 of the first crossbar 241 clamps the first protrusion 232, thereby preventing the first crossbar 241 from moving along its length direction. The installation method of the second cross bar 242 is the same as that of the first cross bar 241. After the installation of the first cross bar 241 and the second cross bar 242 is completed, their position relative to the cylinder portion 23 is fixed; therefore, when the bolt 1131 is rotated, the length of the protrusion of the bolt 1131 can be increased, thereby being able to push the abutment The pressing surface 5251 further drives the second post-processing carrier assembly 52 to move in a direction approaching the first post-processing carrier assembly 51, so that the seal 523 can be clamped axially.

The outer shell 1 is provided with an opening 111 for detaching the second post-processing carrier assembly 52. The exhaust gas after-treatment package 100 includes an end cover assembly 112 for mating with the opening 111 and a clamp 115 for detaching the end cover assembly 112. Specifically, the exhaust gas after-treatment package 100 is provided with a first flange 1111 located at the opening 111. The end cover assembly 112 includes an end cover 1121 and a second flange 1122 formed on the end cover 1121. The exhaust gas post-treatment package 100 further includes a first sealing gasket 114 clamped between the first flange 1111 and the second flange 1122 to achieve better sealing.

The above embodiments are only used to illustrate the present invention and not to limit the technical solutions described in the present invention. The understanding of this specification should be based on those skilled in the art, although this specification has already described the present invention in detail with reference to the above embodiments. Note, however, those of ordinary skill in the art should understand that those skilled in the art can still modify or equivalently replace the present invention, and all technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered in Within the scope of the claims of the present invention.

Claims

An exhaust gas post-treatment package, which includes an outer shell, a first after-treatment component located in the outer shell, and a second after-treatment component located downstream of the first after-treatment component, the second after-treatment component including a first A second shell and a diesel particulate trap packaged in the second shell, the outer shell is provided with an opening for detaching the second after-treatment component; characterized in that: the exhaust gas after-treatment package includes a socket A cylindrical portion on the periphery of the second housing and a sealing element clamped between the second housing and the cylindrical portion; the cylindrical portion is provided with a protrusion extending in the axial direction , The exhaust gas after-treatment package further includes an end plate fixed to the second housing, a cross bar passing through the protrusion and abutting on the protrusion, and mounted on the cross bar The force applying member can be rotated to push the end plate so that the sealing member can be tightly sealed between the second housing and the cylinder portion.
8. The exhaust gas after-treatment package according to claim 1, wherein the exhaust gas after-treatment package comprises an end cap assembly for mating with the opening.
The exhaust gas after-treatment package according to claim 2, wherein the exhaust gas after-treatment package is provided with a first flange located at the opening, and the end cover assembly includes an end cover and an end cover formed on the end cover. The exhaust gas after-treatment package further includes a clamp that detachably connects the first flange and the second flange, and is clamped between the first flange and the second flange. The first gasket between the flanges.
The exhaust gas post-treatment package according to claim 1, wherein the barrel portion is provided with a first step portion, the second housing is provided with a second step portion, and the sealing member is sleeved on the The second sealing gasket on the second housing is clamped between the first step portion and the second step portion in the axial direction.
8. The exhaust gas post-treatment package according to claim 1, wherein the force application member is a bolt, and the cross bar is provided with an internal thread that matches with the bolt.
The exhaust gas post-treatment package according to claim 5, wherein the end plate is welded and fixed to the second housing, and the end plate is provided with a plurality of pressing surfaces; the number of bolts is a plurality of, and the The bolt can push the pressing surface when rotating.
The exhaust gas post-treatment package according to claim 6, wherein the protrusion includes two first protrusions and two second protrusions, and the first protrusions are respectively provided with first protrusions. Perforations, the second protrusions are respectively provided with second perforations; the cross bar includes a first cross bar that passes through the two first perforations and a second cross bar that passes through the two second perforations , The first crossbar and the second crossbar are both installed with two bolts.
The exhaust gas after-treatment package of claim 7, wherein the first crossbar and the second crossbar are detachably mounted on the first protrusion and the second protrusion .
The exhaust gas after-treatment package according to claim 8, wherein the first cross bar is provided with a first groove for clamping the first protrusion, and the second cross bar is provided with a first groove for clamping Holding the second groove of the second protrusion.
The exhaust gas after-treatment package according to claim 1, wherein the first after-treatment component comprises a first shell and a diesel oxidation catalyst packaged in the first shell, the first shell and the The second housing is contained in the cylinder; the exhaust gas after-treatment package includes a first baffle and a second baffle that are located in the outer shell and are arranged at intervals, and the cylinder penetrates the first baffle. The baffle is fixed to the second baffle, and the cylinder body is welded and fixed to the first baffle and the second baffle.