CN113586203A - Tail gas aftertreatment encapsulation - Google Patents

Tail gas aftertreatment encapsulation Download PDF

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Publication number
CN113586203A
CN113586203A CN202110805203.8A CN202110805203A CN113586203A CN 113586203 A CN113586203 A CN 113586203A CN 202110805203 A CN202110805203 A CN 202110805203A CN 113586203 A CN113586203 A CN 113586203A
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CN
China
Prior art keywords
differential pressure
pressure pipe
flat plate
cavity
aftertreatment
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110805203.8A
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Chinese (zh)
Inventor
李伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tenneco Suzhou Emission System Co Ltd
Original Assignee
Tenneco Suzhou Emission System Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tenneco Suzhou Emission System Co Ltd filed Critical Tenneco Suzhou Emission System Co Ltd
Priority to CN202110805203.8A priority Critical patent/CN113586203A/en
Publication of CN113586203A publication Critical patent/CN113586203A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
    • F01N13/0097—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series the purifying devices are arranged in a single housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
    • F01N13/1827—Sealings specially adapted for exhaust systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
    • F01N13/1844—Mechanical joints
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

An exhaust aftertreatment package includes an outer housing, a first aftertreatment component, and a second aftertreatment component. The second aftertreatment assembly includes a second housing and a diesel particulate trap. The tail gas aftertreatment package comprises a first cavity and a second cavity. The shell body includes first shell body and second shell body, first shell body is equipped with first flat board portion, the second shell body including laminate in the flat board portion of second of the below of first flat board portion. The tail gas aftertreatment package further comprises a first differential pressure pipe assembly and a second differential pressure pipe assembly, wherein the first differential pressure pipe assembly comprises a first differential pressure pipe and a first gasket, the first gasket is attached to the lower portion of the second flat plate portion, and the first differential pressure pipe is communicated with the first cavity. The second differential pressure tube assembly is in communication with the second cavity. According to the arrangement, the structure is simplified, and the sealing performance of the joint of the first differential pressure pipe assembly and the outer shell is improved.

Description

Tail gas aftertreatment encapsulation
Technical Field
The invention relates to a tail gas aftertreatment package, and belongs to the technical field of engine tail gas aftertreatment.
Background
With the escalation of emissions regulations, some exhaust aftertreatment packages include diesel particulate traps. The diesel particulate trap is used for collecting particulate matters in the diesel exhaust, and when the particulate matters are collected to a certain degree, the diesel particulate trap needs to be cleaned, otherwise, the back pressure of the system can be seriously increased, and the normal operation of the system is not facilitated.
How to arrange the pressure difference pipe on the two sides of the diesel particulate trap and ensure the sealing performance of the joint of the pressure difference pipe and the outer shell is a technical problem to be solved by technical personnel in the technical field.
Disclosure of Invention
The invention aims to provide a tail gas aftertreatment package which is simple in structure and good in sealing effect.
In order to achieve the purpose, the invention adopts the following technical scheme: an exhaust aftertreatment package comprising an outer shell and a first aftertreatment component located within the outer shell and a second aftertreatment component located downstream of the first aftertreatment component; the first aftertreatment component comprises a first housing and a first aftertreatment carrier encapsulated in the first housing; the outer shell comprises a barrel body part, and the barrel body part comprises an accommodating cavity; the second aftertreatment component comprises a second shell and a diesel particulate trap, wherein the second shell is partially accommodated in the accommodating cavity, the diesel particulate trap is encapsulated in the second shell, and the exhaust aftertreatment encapsulation comprises a first cavity and a second cavity, wherein the first cavity is located at the upstream of the diesel particulate trap and communicated with the diesel particulate trap, and the second cavity is located at the downstream of the diesel particulate trap and communicated with the diesel particulate trap; the outer shell comprises a first outer shell positioned on the outer side and a second outer shell positioned on the inner side, the first outer shell is provided with a first sunken part sunken inwards and a first flat plate part positioned at the bottom of the first sunken part, and the second outer shell comprises a second flat plate part attached to the lower part of the first flat plate part; the tail gas aftertreatment package further comprises a first differential pressure pipe assembly and a second differential pressure pipe assembly, wherein the first differential pressure pipe assembly comprises a first differential pressure pipe and a first gasket fixed on the first differential pressure pipe, the first gasket is attached to the lower portion of the second flat plate portion, and the first differential pressure pipe is communicated with the first cavity; the second differential pressure tube assembly includes a second differential pressure tube in communication with the second cavity.
As a further improvement of the present invention, the first cavity is located in the barrel portion and between the first aftertreatment support and the diesel particulate trap.
As a further improved technical solution of the present invention, the first differential pressure pipe assembly includes a first seat welded to the barrel portion, one end of the first differential pressure pipe is welded to the first seat, and the other end of the first differential pressure pipe passes through the second flat plate portion and the first flat plate portion to extend out of the outer housing.
As a further improved technical solution of the present invention, the first gasket is welded to the first differential pressure pipe.
As a further improved technical solution of the present invention, the first gasket, the second flat plate portion, and the first flat plate portion are welded together.
As a further improved technical solution of the present invention, the first outer housing is provided with a second recessed portion recessed inward and a third flat plate portion located at the bottom of the second recessed portion, and the second outer housing includes a fourth flat plate portion attached below the third flat plate portion; the second differential pressure pipe assembly comprises a second gasket fixed on the second differential pressure pipe, and the second gasket is attached to the lower portion of the fourth flat plate portion.
As a further improved technical solution of the present invention, the second gasket is welded to the second differential pressure pipe.
As a further improved technical solution of the present invention, the second gasket, the fourth flat plate portion, and the third flat plate portion are welded together.
As a further improved technical scheme of the invention, the exhaust gas aftertreatment package comprises a partition plate, the barrel part is fixed on the partition plate, and the second cavity is positioned on one side of the partition plate; the second differential pressure pipe assembly comprises a second seat welded to the partition plate, one end of the second differential pressure pipe is welded to the second seat, and the other end of the second differential pressure pipe penetrates through the fourth flat plate portion and the third flat plate portion to extend out of the outer shell.
As a further improved technical scheme of the invention, the second differential pressure pipe is L-shaped.
Compared with the prior art, the first outer shell of the exhaust aftertreatment package is provided with the first concave part which is concave inwards and the first flat plate part which is positioned at the bottom of the first concave part, the second outer shell comprises the second flat plate part which is attached to the lower part of the first flat plate part, and the first gasket of the first differential pressure pipe assembly is attached to the lower part of the second flat plate part, so that the first differential pressure pipe can conveniently penetrate through the first outer shell and the second outer shell, the structure is simplified, and the sealing performance of the connecting part of the first differential pressure pipe assembly and the first outer shell as well as the second outer shell is improved.
Drawings
FIG. 1 is a schematic perspective view of an exhaust aftertreatment package according to the invention in one embodiment.
Fig. 2 is a front view of fig. 1.
Fig. 3 is a partially exploded perspective view of fig. 1.
Fig. 4 is a schematic perspective view of fig. 1 with a portion of the outer housing removed.
FIG. 5 is a schematic perspective view of a first differential pressure tube assembly and a second differential pressure tube assembly.
Fig. 6 is a schematic sectional view taken along line a-a in fig. 2.
Fig. 7 is a schematic sectional view taken along line B-B in fig. 2.
Fig. 8 is a partially enlarged view of circled portion C in fig. 7.
Detailed Description
The following detailed description of the embodiments of the invention will be described in conjunction with the accompanying drawings, in which, if there are several embodiments, the features of these embodiments can be combined with each other without conflict. When the description refers to the accompanying drawings, like numbers or symbols in different drawings represent the same or similar elements unless otherwise specified. The statements made in the following exemplary embodiments do not represent all embodiments of the present invention, but rather they are merely examples of products consistent with the present invention as recited in the claims of the present invention.
The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present invention. It should be understood that the use of terms such as "first," "second," and the like, in the description and in the claims of the present invention do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another.
Referring to fig. 1 to 8, the present invention discloses an exhaust gas aftertreatment package 100, which includes an outer casing 1, a first aftertreatment carrier assembly 2 disposed inside the outer casing 1, a second aftertreatment assembly 3 disposed downstream of the first aftertreatment assembly 2, a first differential pressure tube assembly 5, and a second differential pressure tube assembly 6. The outer housing 1 comprises a barrel 11 and an opening 12 for removal of the second aftertreatment component 3. The barrel 11 includes a receiving cavity 110 and a protrusion 112 protruding inward into the receiving cavity 110 for positioning the second aftertreatment component 3. In the illustrated embodiment of the present invention, the protrusions 112 are several and distributed along the circumferential direction of the barrel portion 11, and each of the protrusions 112 extends along the axial direction of the barrel portion 11. The first aftertreatment carrier assembly 2 and the second aftertreatment assembly 3 are at least partially received in the receiving cavity 110 and are spaced apart along the axial direction of the barrel 11.
In addition, the outer case 1 includes a first outer case 14 located on the outer side, a second outer case 15 located on the inner side, and a partition 16 fixed in the first outer case 14 and the second outer case 15.
In the illustrated embodiment of the invention, the first aftertreatment assembly 2 includes a first housing 21 and a first aftertreatment carrier 22 enclosed in the first housing 21. The first aftertreatment support 22 is a Diesel Oxidation Catalyst (DOC).
The second aftertreatment component 3 includes a second housing 31 partially received in the receiving cavity 110 and a diesel particulate trap (DPF)32 enclosed within the second housing 31. The barrel 11 is provided with a bell mouth 111 for guiding the first housing 21 and the second housing 31 to be inserted into the receiving cavity 110. The first housing 21 and the second housing 31 are spaced apart from each other in the axial direction of the barrel 11 after being mounted in place.
The exhaust aftertreatment package 100 includes a first cavity 171 located upstream of the diesel particulate trap 32 and in communication with the diesel particulate trap 32, and a second cavity 172 located downstream of the diesel particulate trap 32 and in communication with the diesel particulate trap 32. In the illustrated embodiment of the invention, the first cavity 171 is located within the barrel portion 11 and between the first aftertreatment support 22 and the diesel particulate trap 32. The second chamber 172 is located on a side of the baffle 16 away from the first aftertreatment carrier 22.
The second housing 31 includes a first end 311 that is proximate to the first aftertreatment carrier 22 and a second end 312 that is distal to the first aftertreatment carrier 22. The protrusion 112 is used to position the first end 311. The second end 312 includes a fixed retaining ring 3121 fixed to the second housing 31.
The second aftertreatment assembly 3 includes a seal 33 that is sleeved over the second end 312. The sealing member 33 is a sealing ring. The seal 33 seals circumferentially between the first barrel portion 11 and the second housing 31. The fixing retainer 3121 is used to prevent the sealing member 33 from sliding out of the second housing 31 from one side. The second aftertreatment assembly 3 further comprises a stop ring 34 sleeved on the second casing 31 and used for preventing the sealing member 33 from sliding out of the second casing 31 from the other side. The seal 33 is axially fixed between the fixed retaining ring 3121 and the stop ring 34.
The second aftertreatment component 3 further comprises a connecting portion 35 connected to the second casing 31 and an end cap 36 fixed to the connecting portion 35. The connecting portion 35 is provided with a plurality of airflow outlet holes 351 communicated with the second cavity 172, so that the exhaust gas flowing through the diesel particulate filter 32 flows out of the airflow outlet holes 351 and flows into the second cavity 172.
The outer casing 1 is provided with a first flange part 13, the connecting part 35 is provided with a second flange part 352, and the exhaust gas aftertreatment package 100 further comprises a clamp 4 connecting the first flange part 13 and the second flange part 352 together, so as to detach the second aftertreatment component 3.
The sealing element 33 of the present invention is sleeved on the second end 312, so that the sealing element 33 is located at a side far away from the first aftertreatment component 2, thereby reducing the stroke of the sealing element 33 when the second aftertreatment component 3 is installed in the barrel 11, reducing the friction between the sealing element 33 and other parts, improving the sealing effect of the exhaust aftertreatment package 100, and particularly improving the sealing performance when the disassembled second aftertreatment component 3 is reinstalled in the barrel 11.
The first outer case 14 is provided with a first recessed portion 140 recessed inward, a first flat plate portion 141 at the bottom of the first recessed portion 140, a second recessed portion 142 recessed inward, and a third flat plate portion 143 at the bottom of the second recessed portion 142. Preferably, the first recess 140 and the second recess 142 are formed by inwardly stamping the first outer housing 14.
The second housing body 15 is provided with a third recessed portion 150 recessed inward, a second flat plate portion 151 at the bottom of the third recessed portion 150, a fourth recessed portion 152 recessed inward, and a fourth flat plate portion 153 at the bottom of the fourth recessed portion 152. Preferably, the third recess 150 and the fourth recess 152 are formed by inwardly punching the second housing body 15. The second flat plate portion 151 is attached to a lower portion of the first flat plate portion 141, and the fourth flat plate portion 153 is attached to a lower portion of the third flat plate portion 143.
The first differential pressure pipe assembly 5 includes a first seat 51 welded to the cylindrical body 11, a first differential pressure pipe 52 welded to the first seat 51, and a first gasket 53 fixed to the first differential pressure pipe 52. One end of the first differential pressure pipe 52 is welded to the first seat 51, so that the first differential pressure pipe 52 is communicated with the first cavity 171; the other end of the first differential pressure pipe 52 passes through the second flat plate portion 151 and the first flat plate portion 141 to extend out of the outer case 1. The first spacer 53 is attached to the lower side of the second flat plate 151. Preferably, the first spacer 53, the second flat plate portion 151, and the first flat plate portion 141 are all welded together. The first gasket 53 is provided with a first flange portion 531 that passes upward through the second flat plate portion 151 and the first flat plate portion 141 to improve sealability.
The second differential pressure pipe assembly 6 is substantially L-shaped and includes a second seat body 61 welded to the diaphragm 16, a second differential pressure pipe 62 welded to the second seat body 61, and a second gasket 63 fixed to the second differential pressure pipe 62. One end of the second differential pressure pipe 62 is welded to the second seat body 61, so that the second differential pressure pipe 62 is communicated with the second cavity 172; the other end of the second differential pressure pipe 62 passes through the fourth flat plate portion 153 and the third flat plate portion 143 to extend out of the outer case 1. The second gasket 63 is attached to the lower side of the fourth flat plate portion 153. Preferably, the second gasket 63, the fourth flat plate portion 153, and the third flat plate portion 143 are all welded together. The second gasket 63 is provided with a second flange portion 631 passing upward through the fourth flat plate portion 153 and the third flat plate portion 143 to improve sealability.
Compared with the prior art, the first outer casing 14 of the exhaust aftertreatment package 100 of the present invention is provided with the first concave portion 140 that is concave inwards and the first flat plate portion 141 that is located at the bottom of the first concave portion 140, the second outer casing 15 includes the second flat plate portion 151 attached below the first flat plate portion 141, and the first gasket 53 of the first differential pressure tube assembly 5 is attached below the second flat plate portion 151, so that the first differential pressure tube 52 can pass through the first outer casing 14 and the second outer casing 15, the structure is simplified, and the sealing performance at the connection between the first differential pressure tube assembly 5 and the first outer casing 14 and the second outer casing 15 is improved. The sealing structure of the second differential pressure tube assembly 6 assembly is the same as the first differential pressure tube 52, and the present invention will not be described in detail.
The above embodiments are only for illustrating the invention and not for limiting the technical solutions described in the invention, and the understanding of the present specification should be based on the technical personnel in the field, and although the present specification has described the invention in detail with reference to the above embodiments, the technical personnel in the field should understand that the technical personnel in the field can still make modifications or equivalent substitutions to the present invention, and all the technical solutions and modifications thereof without departing from the spirit and scope of the present invention should be covered in the claims of the present invention.

Claims (10)

1. An exhaust aftertreatment package comprising an outer shell and a first aftertreatment component located within the outer shell and a second aftertreatment component located downstream of the first aftertreatment component; the first aftertreatment component comprises a first housing and a first aftertreatment carrier encapsulated in the first housing; the outer shell comprises a barrel body part, and the barrel body part comprises an accommodating cavity; the second aftertreatment component comprises a second shell and a diesel particulate trap, wherein the second shell is partially accommodated in the accommodating cavity, the diesel particulate trap is encapsulated in the second shell, and the exhaust aftertreatment encapsulation comprises a first cavity and a second cavity, wherein the first cavity is located at the upstream of the diesel particulate trap and communicated with the diesel particulate trap, and the second cavity is located at the downstream of the diesel particulate trap and communicated with the diesel particulate trap; the method is characterized in that: the outer shell comprises a first outer shell positioned on the outer side and a second outer shell positioned on the inner side, the first outer shell is provided with a first sunken part sunken inwards and a first flat plate part positioned at the bottom of the first sunken part, and the second outer shell comprises a second flat plate part attached to the lower part of the first flat plate part; the tail gas aftertreatment package further comprises a first differential pressure pipe assembly and a second differential pressure pipe assembly, wherein the first differential pressure pipe assembly comprises a first differential pressure pipe and a first gasket fixed on the first differential pressure pipe, the first gasket is attached to the lower portion of the second flat plate portion, and the first differential pressure pipe is communicated with the first cavity; the second differential pressure tube assembly includes a second differential pressure tube in communication with the second cavity.
2. The exhaust aftertreatment package of claim 1, wherein: the first cavity is located in the barrel portion and located between the first aftertreatment carrier and the diesel particulate trap.
3. The exhaust aftertreatment package of claim 2, wherein: the first differential pressure pipe assembly comprises a first seat welded to the barrel portion, one end of the first differential pressure pipe is welded to the first seat, and the other end of the first differential pressure pipe penetrates through the second flat plate portion and the first flat plate portion to extend out of the outer shell.
4. The exhaust aftertreatment package of claim 3, wherein: the first gasket is welded to the first differential pressure pipe.
5. The exhaust aftertreatment package of claim 4, wherein: the first gasket, the second flat plate portion, and the first flat plate portion are welded together.
6. The exhaust aftertreatment package of claim 1, wherein: the first outer shell is provided with a second sunken part sunken inwards and a third flat plate part positioned at the bottom of the second sunken part, and the second outer shell comprises a fourth flat plate part attached below the third flat plate part; the second differential pressure pipe assembly comprises a second gasket fixed on the second differential pressure pipe, and the second gasket is attached to the lower portion of the fourth flat plate portion.
7. The exhaust aftertreatment package of claim 6, wherein: the second gasket is welded to the second differential pressure pipe.
8. The exhaust aftertreatment package of claim 6, wherein: the second gasket, the fourth flat plate portion, and the third flat plate portion are welded together.
9. The exhaust aftertreatment package of claim 1, wherein: the tail gas aftertreatment package comprises a partition plate, the barrel body part is fixed on the partition plate, and the second cavity is positioned on one side of the partition plate; the second differential pressure pipe assembly comprises a second seat welded to the partition plate, one end of the second differential pressure pipe is welded to the second seat, and the other end of the second differential pressure pipe penetrates through the fourth flat plate portion and the third flat plate portion to extend out of the outer shell.
10. The exhaust aftertreatment package of claim 9, wherein: the second differential pressure pipe is L-shaped.
CN202110805203.8A 2021-07-16 2021-07-16 Tail gas aftertreatment encapsulation Pending CN113586203A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110805203.8A CN113586203A (en) 2021-07-16 2021-07-16 Tail gas aftertreatment encapsulation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110805203.8A CN113586203A (en) 2021-07-16 2021-07-16 Tail gas aftertreatment encapsulation

Publications (1)

Publication Number Publication Date
CN113586203A true CN113586203A (en) 2021-11-02

Family

ID=78248420

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110805203.8A Pending CN113586203A (en) 2021-07-16 2021-07-16 Tail gas aftertreatment encapsulation

Country Status (1)

Country Link
CN (1) CN113586203A (en)

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